diff --git a/Documentation/credentials.txt b/Documentation/credentials.txt
new file mode 100644
index 0000000..df03169
--- /dev/null
+++ b/Documentation/credentials.txt
@@ -0,0 +1,582 @@
+			     ====================
+			     CREDENTIALS IN LINUX
+			     ====================
+
+By: David Howells <dhowells@redhat.com>
+
+Contents:
+
+ (*) Overview.
+
+ (*) Types of credentials.
+
+ (*) File markings.
+
+ (*) Task credentials.
+
+     - Immutable credentials.
+     - Accessing task credentials.
+     - Accessing another task's credentials.
+     - Altering credentials.
+     - Managing credentials.
+
+ (*) Open file credentials.
+
+ (*) Overriding the VFS's use of credentials.
+
+
+========
+OVERVIEW
+========
+
+There are several parts to the security check performed by Linux when one
+object acts upon another:
+
+ (1) Objects.
+
+     Objects are things in the system that may be acted upon directly by
+     userspace programs.  Linux has a variety of actionable objects, including:
+
+	- Tasks
+	- Files/inodes
+	- Sockets
+	- Message queues
+	- Shared memory segments
+	- Semaphores
+	- Keys
+
+     As a part of the description of all these objects there is a set of
+     credentials.  What's in the set depends on the type of object.
+
+ (2) Object ownership.
+
+     Amongst the credentials of most objects, there will be a subset that
+     indicates the ownership of that object.  This is used for resource
+     accounting and limitation (disk quotas and task rlimits for example).
+
+     In a standard UNIX filesystem, for instance, this will be defined by the
+     UID marked on the inode.
+
+ (3) The objective context.
+
+     Also amongst the credentials of those objects, there will be a subset that
+     indicates the 'objective context' of that object.  This may or may not be
+     the same set as in (2) - in standard UNIX files, for instance, this is the
+     defined by the UID and the GID marked on the inode.
+
+     The objective context is used as part of the security calculation that is
+     carried out when an object is acted upon.
+
+ (4) Subjects.
+
+     A subject is an object that is acting upon another object.
+
+     Most of the objects in the system are inactive: they don't act on other
+     objects within the system.  Processes/tasks are the obvious exception:
+     they do stuff; they access and manipulate things.
+
+     Objects other than tasks may under some circumstances also be subjects.
+     For instance an open file may send SIGIO to a task using the UID and EUID
+     given to it by a task that called fcntl(F_SETOWN) upon it.  In this case,
+     the file struct will have a subjective context too.
+
+ (5) The subjective context.
+
+     A subject has an additional interpretation of its credentials.  A subset
+     of its credentials forms the 'subjective context'.  The subjective context
+     is used as part of the security calculation that is carried out when a
+     subject acts.
+
+     A Linux task, for example, has the FSUID, FSGID and the supplementary
+     group list for when it is acting upon a file - which are quite separate
+     from the real UID and GID that normally form the objective context of the
+     task.
+
+ (6) Actions.
+
+     Linux has a number of actions available that a subject may perform upon an
+     object.  The set of actions available depends on the nature of the subject
+     and the object.
+
+     Actions include reading, writing, creating and deleting files; forking or
+     signalling and tracing tasks.
+
+ (7) Rules, access control lists and security calculations.
+
+     When a subject acts upon an object, a security calculation is made.  This
+     involves taking the subjective context, the objective context and the
+     action, and searching one or more sets of rules to see whether the subject
+     is granted or denied permission to act in the desired manner on the
+     object, given those contexts.
+
+     There are two main sources of rules:
+
+     (a) Discretionary access control (DAC):
+
+	 Sometimes the object will include sets of rules as part of its
+	 description.  This is an 'Access Control List' or 'ACL'.  A Linux
+	 file may supply more than one ACL.
+
+	 A traditional UNIX file, for example, includes a permissions mask that
+	 is an abbreviated ACL with three fixed classes of subject ('user',
+	 'group' and 'other'), each of which may be granted certain privileges
+	 ('read', 'write' and 'execute' - whatever those map to for the object
+	 in question).  UNIX file permissions do not allow the arbitrary
+	 specification of subjects, however, and so are of limited use.
+
+	 A Linux file might also sport a POSIX ACL.  This is a list of rules
+	 that grants various permissions to arbitrary subjects.
+
+     (b) Mandatory access control (MAC):
+
+	 The system as a whole may have one or more sets of rules that get
+	 applied to all subjects and objects, regardless of their source.
+	 SELinux and Smack are examples of this.
+
+	 In the case of SELinux and Smack, each object is given a label as part
+	 of its credentials.  When an action is requested, they take the
+	 subject label, the object label and the action and look for a rule
+	 that says that this action is either granted or denied.
+
+
+====================
+TYPES OF CREDENTIALS
+====================
+
+The Linux kernel supports the following types of credentials:
+
+ (1) Traditional UNIX credentials.
+
+	Real User ID
+	Real Group ID
+
+     The UID and GID are carried by most, if not all, Linux objects, even if in
+     some cases it has to be invented (FAT or CIFS files for example, which are
+     derived from Windows).  These (mostly) define the objective context of
+     that object, with tasks being slightly different in some cases.
+
+	Effective, Saved and FS User ID
+	Effective, Saved and FS Group ID
+	Supplementary groups
+
+     These are additional credentials used by tasks only.  Usually, an
+     EUID/EGID/GROUPS will be used as the subjective context, and real UID/GID
+     will be used as the objective.  For tasks, it should be noted that this is
+     not always true.
+
+ (2) Capabilities.
+
+	Set of permitted capabilities
+	Set of inheritable capabilities
+	Set of effective capabilities
+	Capability bounding set
+
+     These are only carried by tasks.  They indicate superior capabilities
+     granted piecemeal to a task that an ordinary task wouldn't otherwise have.
+     These are manipulated implicitly by changes to the traditional UNIX
+     credentials, but can also be manipulated directly by the capset() system
+     call.
+
+     The permitted capabilities are those caps that the process might grant
+     itself to its effective or permitted sets through capset().  This
+     inheritable set might also be so constrained.
+
+     The effective capabilities are the ones that a task is actually allowed to
+     make use of itself.
+
+     The inheritable capabilities are the ones that may get passed across
+     execve().
+
+     The bounding set limits the capabilities that may be inherited across
+     execve(), especially when a binary is executed that will execute as UID 0.
+
+ (3) Secure management flags (securebits).
+
+     These are only carried by tasks.  These govern the way the above
+     credentials are manipulated and inherited over certain operations such as
+     execve().  They aren't used directly as objective or subjective
+     credentials.
+
+ (4) Keys and keyrings.
+
+     These are only carried by tasks.  They carry and cache security tokens
+     that don't fit into the other standard UNIX credentials.  They are for
+     making such things as network filesystem keys available to the file
+     accesses performed by processes, without the necessity of ordinary
+     programs having to know about security details involved.
+
+     Keyrings are a special type of key.  They carry sets of other keys and can
+     be searched for the desired key.  Each process may subscribe to a number
+     of keyrings:
+
+	Per-thread keying
+	Per-process keyring
+	Per-session keyring
+
+     When a process accesses a key, if not already present, it will normally be
+     cached on one of these keyrings for future accesses to find.
+
+     For more information on using keys, see Documentation/keys.txt.
+
+ (5) LSM
+
+     The Linux Security Module allows extra controls to be placed over the
+     operations that a task may do.  Currently Linux supports two main
+     alternate LSM options: SELinux and Smack.
+
+     Both work by labelling the objects in a system and then applying sets of
+     rules (policies) that say what operations a task with one label may do to
+     an object with another label.
+
+ (6) AF_KEY
+
+     This is a socket-based approach to credential management for networking
+     stacks [RFC 2367].  It isn't discussed by this document as it doesn't
+     interact directly with task and file credentials; rather it keeps system
+     level credentials.
+
+
+When a file is opened, part of the opening task's subjective context is
+recorded in the file struct created.  This allows operations using that file
+struct to use those credentials instead of the subjective context of the task
+that issued the operation.  An example of this would be a file opened on a
+network filesystem where the credentials of the opened file should be presented
+to the server, regardless of who is actually doing a read or a write upon it.
+
+
+=============
+FILE MARKINGS
+=============
+
+Files on disk or obtained over the network may have annotations that form the
+objective security context of that file.  Depending on the type of filesystem,
+this may include one or more of the following:
+
+ (*) UNIX UID, GID, mode;
+
+ (*) Windows user ID;
+
+ (*) Access control list;
+
+ (*) LSM security label;
+
+ (*) UNIX exec privilege escalation bits (SUID/SGID);
+
+ (*) File capabilities exec privilege escalation bits.
+
+These are compared to the task's subjective security context, and certain
+operations allowed or disallowed as a result.  In the case of execve(), the
+privilege escalation bits come into play, and may allow the resulting process
+extra privileges, based on the annotations on the executable file.
+
+
+================
+TASK CREDENTIALS
+================
+
+In Linux, all of a task's credentials are held in (uid, gid) or through
+(groups, keys, LSM security) a refcounted structure of type 'struct cred'.
+Each task points to its credentials by a pointer called 'cred' in its
+task_struct.
+
+Once a set of credentials has been prepared and committed, it may not be
+changed, barring the following exceptions:
+
+ (1) its reference count may be changed;
+
+ (2) the reference count on the group_info struct it points to may be changed;
+
+ (3) the reference count on the security data it points to may be changed;
+
+ (4) the reference count on any keyrings it points to may be changed;
+
+ (5) any keyrings it points to may be revoked, expired or have their security
+     attributes changed; and
+
+ (6) the contents of any keyrings to which it points may be changed (the whole
+     point of keyrings being a shared set of credentials, modifiable by anyone
+     with appropriate access).
+
+To alter anything in the cred struct, the copy-and-replace principle must be
+adhered to.  First take a copy, then alter the copy and then use RCU to change
+the task pointer to make it point to the new copy.  There are wrappers to aid
+with this (see below).
+
+A task may only alter its _own_ credentials; it is no longer permitted for a
+task to alter another's credentials.  This means the capset() system call is no
+longer permitted to take any PID other than the one of the current process.
+Also keyctl_instantiate() and keyctl_negate() functions no longer permit
+attachment to process-specific keyrings in the requesting process as the
+instantiating process may need to create them.
+
+
+IMMUTABLE CREDENTIALS
+---------------------
+
+Once a set of credentials has been made public (by calling commit_creds() for
+example), it must be considered immutable, barring two exceptions:
+
+ (1) The reference count may be altered.
+
+ (2) Whilst the keyring subscriptions of a set of credentials may not be
+     changed, the keyrings subscribed to may have their contents altered.
+
+To catch accidental credential alteration at compile time, struct task_struct
+has _const_ pointers to its credential sets, as does struct file.  Furthermore,
+certain functions such as get_cred() and put_cred() operate on const pointers,
+thus rendering casts unnecessary, but require to temporarily ditch the const
+qualification to be able to alter the reference count.
+
+
+ACCESSING TASK CREDENTIALS
+--------------------------
+
+A task being able to alter only its own credentials permits the current process
+to read or replace its own credentials without the need for any form of locking
+- which simplifies things greatly.  It can just call:
+
+	const struct cred *current_cred()
+
+to get a pointer to its credentials structure, and it doesn't have to release
+it afterwards.
+
+There are convenience wrappers for retrieving specific aspects of a task's
+credentials (the value is simply returned in each case):
+
+	uid_t current_uid(void)		Current's real UID
+	gid_t current_gid(void)		Current's real GID
+	uid_t current_euid(void)	Current's effective UID
+	gid_t current_egid(void)	Current's effective GID
+	uid_t current_fsuid(void)	Current's file access UID
+	gid_t current_fsgid(void)	Current's file access GID
+	kernel_cap_t current_cap(void)	Current's effective capabilities
+	void *current_security(void)	Current's LSM security pointer
+	struct user_struct *current_user(void)  Current's user account
+
+There are also convenience wrappers for retrieving specific associated pairs of
+a task's credentials:
+
+	void current_uid_gid(uid_t *, gid_t *);
+	void current_euid_egid(uid_t *, gid_t *);
+	void current_fsuid_fsgid(uid_t *, gid_t *);
+
+which return these pairs of values through their arguments after retrieving
+them from the current task's credentials.
+
+
+In addition, there is a function for obtaining a reference on the current
+process's current set of credentials:
+
+	const struct cred *get_current_cred(void);
+
+and functions for getting references to one of the credentials that don't
+actually live in struct cred:
+
+	struct user_struct *get_current_user(void);
+	struct group_info *get_current_groups(void);
+
+which get references to the current process's user accounting structure and
+supplementary groups list respectively.
+
+Once a reference has been obtained, it must be released with put_cred(),
+free_uid() or put_group_info() as appropriate.
+
+
+ACCESSING ANOTHER TASK'S CREDENTIALS
+------------------------------------
+
+Whilst a task may access its own credentials without the need for locking, the
+same is not true of a task wanting to access another task's credentials.  It
+must use the RCU read lock and rcu_dereference().
+
+The rcu_dereference() is wrapped by:
+
+	const struct cred *__task_cred(struct task_struct *task);
+
+This should be used inside the RCU read lock, as in the following example:
+
+	void foo(struct task_struct *t, struct foo_data *f)
+	{
+		const struct cred *tcred;
+		...
+		rcu_read_lock();
+		tcred = __task_cred(t);
+		f->uid = tcred->uid;
+		f->gid = tcred->gid;
+		f->groups = get_group_info(tcred->groups);
+		rcu_read_unlock();
+		...
+	}
+
+A function need not get RCU read lock to use __task_cred() if it is holding a
+spinlock at the time as this implicitly holds the RCU read lock.
+
+Should it be necessary to hold another task's credentials for a long period of
+time, and possibly to sleep whilst doing so, then the caller should get a
+reference on them using:
+
+	const struct cred *get_task_cred(struct task_struct *task);
+
+This does all the RCU magic inside of it.  The caller must call put_cred() on
+the credentials so obtained when they're finished with.
+
+There are a couple of convenience functions to access bits of another task's
+credentials, hiding the RCU magic from the caller:
+
+	uid_t task_uid(task)		Task's real UID
+	uid_t task_euid(task)		Task's effective UID
+
+If the caller is holding a spinlock or the RCU read lock at the time anyway,
+then:
+
+	__task_cred(task)->uid
+	__task_cred(task)->euid
+
+should be used instead.  Similarly, if multiple aspects of a task's credentials
+need to be accessed, RCU read lock or a spinlock should be used, __task_cred()
+called, the result stored in a temporary pointer and then the credential
+aspects called from that before dropping the lock.  This prevents the
+potentially expensive RCU magic from being invoked multiple times.
+
+Should some other single aspect of another task's credentials need to be
+accessed, then this can be used:
+
+	task_cred_xxx(task, member)
+
+where 'member' is a non-pointer member of the cred struct.  For instance:
+
+	uid_t task_cred_xxx(task, suid);
+
+will retrieve 'struct cred::suid' from the task, doing the appropriate RCU
+magic.  This may not be used for pointer members as what they point to may
+disappear the moment the RCU read lock is dropped.
+
+
+ALTERING CREDENTIALS
+--------------------
+
+As previously mentioned, a task may only alter its own credentials, and may not
+alter those of another task.  This means that it doesn't need to use any
+locking to alter its own credentials.
+
+To alter the current process's credentials, a function should first prepare a
+new set of credentials by calling:
+
+	struct cred *prepare_creds(void);
+
+this locks current->cred_replace_mutex and then allocates and constructs a
+duplicate of the current process's credentials, returning with the mutex still
+held if successful.  It returns NULL if not successful (out of memory).
+
+The mutex prevents ptrace() from altering the ptrace state of a process whilst
+security checks on credentials construction and changing is taking place as
+the ptrace state may alter the outcome, particularly in the case of execve().
+
+The new credentials set should be altered appropriately, and any security
+checks and hooks done.  Both the current and the proposed sets of credentials
+are available for this purpose as current_cred() will return the current set
+still at this point.
+
+
+When the credential set is ready, it should be committed to the current process
+by calling:
+
+	int commit_creds(struct cred *new);
+
+This will alter various aspects of the credentials and the process, giving the
+LSM a chance to do likewise, then it will use rcu_assign_pointer() to actually
+commit the new credentials to current->cred, it will release
+current->cred_replace_mutex to allow ptrace() to take place, and it will notify
+the scheduler and others of the changes.
+
+This function is guaranteed to return 0, so that it can be tail-called at the
+end of such functions as sys_setresuid().
+
+Note that this function consumes the caller's reference to the new credentials.
+The caller should _not_ call put_cred() on the new credentials afterwards.
+
+Furthermore, once this function has been called on a new set of credentials,
+those credentials may _not_ be changed further.
+
+
+Should the security checks fail or some other error occur after prepare_creds()
+has been called, then the following function should be invoked:
+
+	void abort_creds(struct cred *new);
+
+This releases the lock on current->cred_replace_mutex that prepare_creds() got
+and then releases the new credentials.
+
+
+A typical credentials alteration function would look something like this:
+
+	int alter_suid(uid_t suid)
+	{
+		struct cred *new;
+		int ret;
+
+		new = prepare_creds();
+		if (!new)
+			return -ENOMEM;
+
+		new->suid = suid;
+		ret = security_alter_suid(new);
+		if (ret < 0) {
+			abort_creds(new);
+			return ret;
+		}
+
+		return commit_creds(new);
+	}
+
+
+MANAGING CREDENTIALS
+--------------------
+
+There are some functions to help manage credentials:
+
+ (*) void put_cred(const struct cred *cred);
+
+     This releases a reference to the given set of credentials.  If the
+     reference count reaches zero, the credentials will be scheduled for
+     destruction by the RCU system.
+
+ (*) const struct cred *get_cred(const struct cred *cred);
+
+     This gets a reference on a live set of credentials, returning a pointer to
+     that set of credentials.
+
+ (*) struct cred *get_new_cred(struct cred *cred);
+
+     This gets a reference on a set of credentials that is under construction
+     and is thus still mutable, returning a pointer to that set of credentials.
+
+
+=====================
+OPEN FILE CREDENTIALS
+=====================
+
+When a new file is opened, a reference is obtained on the opening task's
+credentials and this is attached to the file struct as 'f_cred' in place of
+'f_uid' and 'f_gid'.  Code that used to access file->f_uid and file->f_gid
+should now access file->f_cred->fsuid and file->f_cred->fsgid.
+
+It is safe to access f_cred without the use of RCU or locking because the
+pointer will not change over the lifetime of the file struct, and nor will the
+contents of the cred struct pointed to, barring the exceptions listed above
+(see the Task Credentials section).
+
+
+=======================================
+OVERRIDING THE VFS'S USE OF CREDENTIALS
+=======================================
+
+Under some circumstances it is desirable to override the credentials used by
+the VFS, and that can be done by calling into such as vfs_mkdir() with a
+different set of credentials.  This is done in the following places:
+
+ (*) sys_faccessat().
+
+ (*) do_coredump().
+
+ (*) nfs4recover.c.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e0f346d..d8c4cee 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1449,6 +1449,10 @@
 			instruction doesn't work correctly and not to
 			use it.
 
+	no_file_caps	Tells the kernel not to honor file capabilities.  The
+			only way then for a file to be executed with privilege
+			is to be setuid root or executed by root.
+
 	nohalt		[IA-64] Tells the kernel not to use the power saving
 			function PAL_HALT_LIGHT when idle. This increases
 			power-consumption. On the positive side, it reduces
diff --git a/arch/alpha/kernel/asm-offsets.c b/arch/alpha/kernel/asm-offsets.c
index 4b18cd9..6ff8886 100644
--- a/arch/alpha/kernel/asm-offsets.c
+++ b/arch/alpha/kernel/asm-offsets.c
@@ -19,15 +19,18 @@
 	BLANK();
 
         DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked));
-        DEFINE(TASK_UID, offsetof(struct task_struct, uid));
-        DEFINE(TASK_EUID, offsetof(struct task_struct, euid));
-        DEFINE(TASK_GID, offsetof(struct task_struct, gid));
-        DEFINE(TASK_EGID, offsetof(struct task_struct, egid));
+        DEFINE(TASK_CRED, offsetof(struct task_struct, cred));
         DEFINE(TASK_REAL_PARENT, offsetof(struct task_struct, real_parent));
         DEFINE(TASK_GROUP_LEADER, offsetof(struct task_struct, group_leader));
         DEFINE(TASK_TGID, offsetof(struct task_struct, tgid));
         BLANK();
 
+        DEFINE(CRED_UID,  offsetof(struct cred, uid));
+        DEFINE(CRED_EUID, offsetof(struct cred, euid));
+        DEFINE(CRED_GID,  offsetof(struct cred, gid));
+        DEFINE(CRED_EGID, offsetof(struct cred, egid));
+        BLANK();
+
 	DEFINE(SIZEOF_PT_REGS, sizeof(struct pt_regs));
 	DEFINE(PT_PTRACED, PT_PTRACED);
 	DEFINE(CLONE_VM, CLONE_VM);
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 5fc61e2..f77345b 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -850,8 +850,9 @@
 sys_getxuid:
 	.prologue 0
 	ldq	$2, TI_TASK($8)
-	ldl	$0, TASK_UID($2)
-	ldl	$1, TASK_EUID($2)
+	ldq	$3, TASK_CRED($2)
+	ldl	$0, CRED_UID($3)
+	ldl	$1, CRED_EUID($3)
 	stq	$1, 80($sp)
 	ret
 .end sys_getxuid
@@ -862,8 +863,9 @@
 sys_getxgid:
 	.prologue 0
 	ldq	$2, TI_TASK($8)
-	ldl	$0, TASK_GID($2)
-	ldl	$1, TASK_EGID($2)
+	ldq	$3, TASK_CRED($2)
+	ldl	$0, CRED_GID($3)
+	ldl	$1, CRED_EGID($3)
 	stq	$1, 80($sp)
 	ret
 .end sys_getxgid
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index 5e92ae0..16ef61a 100644
--- a/arch/ia64/ia32/sys_ia32.c
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -1767,25 +1767,24 @@
 asmlinkage long
 sys32_getgroups16 (int gidsetsize, short __user *grouplist)
 {
+	const struct cred *cred = current_cred();
 	int i;
 
 	if (gidsetsize < 0)
 		return -EINVAL;
 
-	get_group_info(current->group_info);
-	i = current->group_info->ngroups;
+	i = cred->group_info->ngroups;
 	if (gidsetsize) {
 		if (i > gidsetsize) {
 			i = -EINVAL;
 			goto out;
 		}
-		if (groups16_to_user(grouplist, current->group_info)) {
+		if (groups16_to_user(grouplist, cred->group_info)) {
 			i = -EFAULT;
 			goto out;
 		}
 	}
 out:
-	put_group_info(current->group_info);
 	return i;
 }
 
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index fab1d21..f94aaa8 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -158,7 +158,7 @@
 	ia64_mlogbuf_dump();
 	printk(KERN_ERR "OS_MCA: process [cpu %d, pid: %d, uid: %d, "
 		"iip: %p, psr: 0x%lx,paddr: 0x%lx](%s) encounters MCA.\n",
-		raw_smp_processor_id(), current->pid, current->uid,
+	       raw_smp_processor_id(), current->pid, current_uid(),
 		iip, ipsr, paddr, current->comm);
 
 	spin_lock(&mca_bh_lock);
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 6543a55..0e49975 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -2220,8 +2220,8 @@
 	DPRINT(("new inode ino=%ld @%p\n", inode->i_ino, inode));
 
 	inode->i_mode = S_IFCHR|S_IRUGO;
-	inode->i_uid  = current->fsuid;
-	inode->i_gid  = current->fsgid;
+	inode->i_uid  = current_fsuid();
+	inode->i_gid  = current_fsgid();
 
 	sprintf(name, "[%lu]", inode->i_ino);
 	this.name = name;
@@ -2399,22 +2399,33 @@
 static int
 pfm_bad_permissions(struct task_struct *task)
 {
+	const struct cred *tcred;
+	uid_t uid = current_uid();
+	gid_t gid = current_gid();
+	int ret;
+
+	rcu_read_lock();
+	tcred = __task_cred(task);
+
 	/* inspired by ptrace_attach() */
 	DPRINT(("cur: uid=%d gid=%d task: euid=%d suid=%d uid=%d egid=%d sgid=%d\n",
-		current->uid,
-		current->gid,
-		task->euid,
-		task->suid,
-		task->uid,
-		task->egid,
-		task->sgid));
+		uid,
+		gid,
+		tcred->euid,
+		tcred->suid,
+		tcred->uid,
+		tcred->egid,
+		tcred->sgid));
 
-	return ((current->uid != task->euid)
-	    || (current->uid != task->suid)
-	    || (current->uid != task->uid)
-	    || (current->gid != task->egid)
-	    || (current->gid != task->sgid)
-	    || (current->gid != task->gid)) && !capable(CAP_SYS_PTRACE);
+	ret = ((uid != tcred->euid)
+	       || (uid != tcred->suid)
+	       || (uid != tcred->uid)
+	       || (gid != tcred->egid)
+	       || (gid != tcred->sgid)
+	       || (gid != tcred->gid)) && !capable(CAP_SYS_PTRACE);
+
+	rcu_read_unlock();
+	return ret;
 }
 
 static int
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index e12500a..e1821ca 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -229,7 +229,7 @@
 	si.si_errno = 0;
 	si.si_code = SI_KERNEL;
 	si.si_pid = task_pid_vnr(current);
-	si.si_uid = current->uid;
+	si.si_uid = current_uid();
 	si.si_addr = sc;
 	force_sig_info(SIGSEGV, &si, current);
 	return retval;
@@ -326,7 +326,7 @@
 	si.si_errno = 0;
 	si.si_code = SI_KERNEL;
 	si.si_pid = task_pid_vnr(current);
-	si.si_uid = current->uid;
+	si.si_uid = current_uid();
 	si.si_addr = addr;
 	force_sig_info(SIGSEGV, &si, current);
 	return 0;
diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c
index b0591ae..fd6e512 100644
--- a/arch/mips/kernel/kspd.c
+++ b/arch/mips/kernel/kspd.c
@@ -174,8 +174,8 @@
 
 static void sp_setfsuidgid( uid_t uid, gid_t gid)
 {
-	current->fsuid = uid;
-	current->fsgid = gid;
+	current->cred->fsuid = uid;
+	current->cred->fsgid = gid;
 
 	key_fsuid_changed(current);
 	key_fsgid_changed(current);
diff --git a/arch/mips/kernel/mips-mt-fpaff.c b/arch/mips/kernel/mips-mt-fpaff.c
index dc9eb72..5e77a3a 100644
--- a/arch/mips/kernel/mips-mt-fpaff.c
+++ b/arch/mips/kernel/mips-mt-fpaff.c
@@ -51,6 +51,7 @@
 	int retval;
 	struct task_struct *p;
 	struct thread_info *ti;
+	uid_t euid;
 
 	if (len < sizeof(new_mask))
 		return -EINVAL;
@@ -76,9 +77,9 @@
 	 */
 	get_task_struct(p);
 
+	euid = current_euid();
 	retval = -EPERM;
-	if ((current->euid != p->euid) && (current->euid != p->uid) &&
-			!capable(CAP_SYS_NICE)) {
+	if (euid != p->euid && euid != p->uid && !capable(CAP_SYS_NICE)) {
 		read_unlock(&tasklist_lock);
 		goto out_unlock;
 	}
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 972b2d2..09786e4 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -1085,8 +1085,8 @@
 	v->load_addr = NULL;
 	v->len = 0;
 
-	v->uid = filp->f_uid;
-	v->gid = filp->f_gid;
+	v->uid = filp->f_cred->fsuid;
+	v->gid = filp->f_cred->fsgid;
 
 #ifdef CONFIG_MIPS_APSP_KSPD
 	/* get kspd to tell us when a syscall_exit happens */
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 06213d1..f825442 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -182,7 +182,7 @@
 	si.si_errno = 0;
 	si.si_code = SI_KERNEL;
 	si.si_pid = task_pid_vnr(current);
-	si.si_uid = current->uid;
+	si.si_uid = current_uid();
 	si.si_addr = &frame->uc;
 	force_sig_info(SIGSEGV, &si, current);
 	return;
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 565b7a2..8660986 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -339,7 +339,7 @@
 	    && printk_ratelimit())
 		printk(KERN_CRIT "kernel tried to execute NX-protected"
 		       " page (%lx) - exploit attempt? (uid: %d)\n",
-		       address, current->uid);
+		       address, current_uid());
 
 	return SIGSEGV;
 
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index cb85d23..6296bfd 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -95,8 +95,8 @@
 		goto out;
 
 	inode->i_mode = mode;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 	inode->i_blocks = 0;
 	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 out:
@@ -323,7 +323,7 @@
 		goto out;
 	}
 
-	filp = dentry_open(dentry, mnt, O_RDONLY);
+	filp = dentry_open(dentry, mnt, O_RDONLY, current_cred());
 	if (IS_ERR(filp)) {
 		put_unused_fd(ret);
 		ret = PTR_ERR(filp);
@@ -562,7 +562,7 @@
 		goto out;
 	}
 
-	filp = dentry_open(dentry, mnt, O_RDONLY);
+	filp = dentry_open(dentry, mnt, O_RDONLY, current_cred());
 	if (IS_ERR(filp)) {
 		put_unused_fd(ret);
 		ret = PTR_ERR(filp);
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 3631380..8aadcd7 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -280,8 +280,8 @@
 	if (!sbi)
 		return -ENOMEM;
 	mutex_init(&sbi->lock);
-	sbi->uid = current->uid;
-	sbi->gid = current->gid;
+	sbi->uid = current_uid();
+	sbi->gid = current_gid();
 	sb->s_fs_info = sbi;
 	sb->s_blocksize = PAGE_CACHE_SIZE;
 	sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 4646382..6cc87d8 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -148,9 +148,9 @@
 {
 	int retval;
 
-	if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
-	    !(retval = put_user(high2lowuid(current->euid), euid)))
-		retval = put_user(high2lowuid(current->suid), suid);
+	if (!(retval = put_user(high2lowuid(current->cred->uid), ruid)) &&
+	    !(retval = put_user(high2lowuid(current->cred->euid), euid)))
+		retval = put_user(high2lowuid(current->cred->suid), suid);
 
 	return retval;
 }
@@ -165,9 +165,9 @@
 {
 	int retval;
 
-	if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
-	    !(retval = put_user(high2lowgid(current->egid), egid)))
-		retval = put_user(high2lowgid(current->sgid), sgid);
+	if (!(retval = put_user(high2lowgid(current->cred->gid), rgid)) &&
+	    !(retval = put_user(high2lowgid(current->cred->egid), egid)))
+		retval = put_user(high2lowgid(current->cred->sgid), sgid);
 
 	return retval;
 }
@@ -217,20 +217,20 @@
 	if (gidsetsize < 0)
 		return -EINVAL;
 
-	get_group_info(current->group_info);
-	i = current->group_info->ngroups;
+	get_group_info(current->cred->group_info);
+	i = current->cred->group_info->ngroups;
 	if (gidsetsize) {
 		if (i > gidsetsize) {
 			i = -EINVAL;
 			goto out;
 		}
-		if (groups16_to_user(grouplist, current->group_info)) {
+		if (groups16_to_user(grouplist, current->cred->group_info)) {
 			i = -EFAULT;
 			goto out;
 		}
 	}
 out:
-	put_group_info(current->group_info);
+	put_group_info(current->cred->group_info);
 	return i;
 }
 
@@ -261,22 +261,22 @@
 
 asmlinkage long sys32_getuid16(void)
 {
-	return high2lowuid(current->uid);
+	return high2lowuid(current->cred->uid);
 }
 
 asmlinkage long sys32_geteuid16(void)
 {
-	return high2lowuid(current->euid);
+	return high2lowuid(current->cred->euid);
 }
 
 asmlinkage long sys32_getgid16(void)
 {
-	return high2lowgid(current->gid);
+	return high2lowgid(current->cred->gid);
 }
 
 asmlinkage long sys32_getegid16(void)
 {
-	return high2lowgid(current->egid);
+	return high2lowgid(current->cred->egid);
 }
 
 /*
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 19d579d..16d3b37 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -159,7 +159,8 @@
 		goto out_kill;
 	}
 
-	file = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY);
+	file = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY,
+			   current_cred());
 	if (IS_ERR(file)) {
 		mconsole_reply(req, "Failed to open file", 1, 0);
 		goto out_kill;
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index 127ec3f..2a4d073 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -327,7 +327,7 @@
 	current->mm->cached_hole_size = 0;
 
 	current->mm->mmap = NULL;
-	compute_creds(bprm);
+	install_exec_creds(bprm);
 	current->flags &= ~PF_FORKNOEXEC;
 
 	if (N_MAGIC(ex) == OMAGIC) {
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 31e8730..3a1b6ef 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -393,7 +393,7 @@
 		if (pte && pte_present(*pte) && !pte_exec(*pte))
 			printk(KERN_CRIT "kernel tried to execute "
 				"NX-protected page - exploit attempt? "
-				"(uid: %d)\n", current->uid);
+				"(uid: %d)\n", current_uid());
 	}
 #endif
 
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 5c4ee70..fb06ed6 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -936,8 +936,10 @@
 {
 	int err;
 	struct loop_func_table *xfer;
+	uid_t uid = current_uid();
 
-	if (lo->lo_encrypt_key_size && lo->lo_key_owner != current->uid &&
+	if (lo->lo_encrypt_key_size &&
+	    lo->lo_key_owner != uid &&
 	    !capable(CAP_SYS_ADMIN))
 		return -EPERM;
 	if (lo->lo_state != Lo_bound)
@@ -992,7 +994,7 @@
 	if (info->lo_encrypt_key_size) {
 		memcpy(lo->lo_encrypt_key, info->lo_encrypt_key,
 		       info->lo_encrypt_key_size);
-		lo->lo_key_owner = current->uid;
+		lo->lo_key_owner = uid;
 	}	
 
 	return 0;
diff --git a/drivers/char/tty_audit.c b/drivers/char/tty_audit.c
index 5787249..d961fa9 100644
--- a/drivers/char/tty_audit.c
+++ b/drivers/char/tty_audit.c
@@ -86,10 +86,12 @@
 	ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_TTY);
 	if (ab) {
 		char name[sizeof(tsk->comm)];
+		uid_t uid = task_uid(tsk);
 
 		audit_log_format(ab, "tty pid=%u uid=%u auid=%u ses=%u "
-				 "major=%d minor=%d comm=", tsk->pid, tsk->uid,
-				 loginuid, sessionid, buf->major, buf->minor);
+				 "major=%d minor=%d comm=",
+				 tsk->pid, uid, loginuid, sessionid,
+				 buf->major, buf->minor);
 		get_task_comm(name, tsk);
 		audit_log_untrustedstring(ab, name);
 		audit_log_format(ab, " data=");
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c
index 5c9f67f..c5afc98 100644
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -106,6 +106,7 @@
 	struct proc_event *ev;
 	__u8 buffer[CN_PROC_MSG_SIZE];
 	struct timespec ts;
+	const struct cred *cred;
 
 	if (atomic_read(&proc_event_num_listeners) < 1)
 		return;
@@ -115,14 +116,19 @@
 	ev->what = which_id;
 	ev->event_data.id.process_pid = task->pid;
 	ev->event_data.id.process_tgid = task->tgid;
+	rcu_read_lock();
+	cred = __task_cred(task);
 	if (which_id == PROC_EVENT_UID) {
-	 	ev->event_data.id.r.ruid = task->uid;
-	 	ev->event_data.id.e.euid = task->euid;
+		ev->event_data.id.r.ruid = cred->uid;
+		ev->event_data.id.e.euid = cred->euid;
 	} else if (which_id == PROC_EVENT_GID) {
-	   	ev->event_data.id.r.rgid = task->gid;
-	   	ev->event_data.id.e.egid = task->egid;
-	} else
+		ev->event_data.id.r.rgid = cred->gid;
+		ev->event_data.id.e.egid = cred->egid;
+	} else {
+		rcu_read_unlock();
 	     	return;
+	}
+	rcu_read_unlock();
 	get_seq(&msg->seq, &ev->cpu);
 	ktime_get_ts(&ts); /* get high res monotonic timestamp */
 	put_unaligned(timespec_to_ns(&ts), (__u64 *)&ev->timestamp_ns);
diff --git a/drivers/isdn/capi/capifs.c b/drivers/isdn/capi/capifs.c
index 550e80f..0aa66ec 100644
--- a/drivers/isdn/capi/capifs.c
+++ b/drivers/isdn/capi/capifs.c
@@ -156,8 +156,8 @@
 	if (!inode)
 		return;
 	inode->i_ino = number+2;
-	inode->i_uid = config.setuid ? config.uid : current->fsuid;
-	inode->i_gid = config.setgid ? config.gid : current->fsgid;
+	inode->i_uid = config.setuid ? config.uid : current_fsuid();
+	inode->i_gid = config.setgid ? config.gid : current_fsgid();
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
 	init_special_inode(inode, S_IFCHR|config.mode, device);
 	//inode->i_op = &capifs_file_inode_operations;
diff --git a/drivers/isdn/hysdn/hysdn_procconf.c b/drivers/isdn/hysdn/hysdn_procconf.c
index 484299b..8f9f491 100644
--- a/drivers/isdn/hysdn/hysdn_procconf.c
+++ b/drivers/isdn/hysdn/hysdn_procconf.c
@@ -246,7 +246,8 @@
 	}
 	if (card->debug_flags & (LOG_PROC_OPEN | LOG_PROC_ALL))
 		hysdn_addlog(card, "config open for uid=%d gid=%d mode=0x%x",
-			     filep->f_uid, filep->f_gid, filep->f_mode);
+			     filep->f_cred->fsuid, filep->f_cred->fsgid,
+			     filep->f_mode);
 
 	if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) {
 		/* write only access -> write boot file or conf line */
@@ -331,7 +332,8 @@
 	}
 	if (card->debug_flags & (LOG_PROC_OPEN | LOG_PROC_ALL))
 		hysdn_addlog(card, "config close for uid=%d gid=%d mode=0x%x",
-			     filep->f_uid, filep->f_gid, filep->f_mode);
+			     filep->f_cred->fsuid, filep->f_cred->fsgid,
+			     filep->f_mode);
 
 	if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) {
 		/* write only access -> write boot file or conf line */
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 33b6d1b..55dc70c 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -702,6 +702,7 @@
 	struct tun_net *tn;
 	struct tun_struct *tun;
 	struct net_device *dev;
+	const struct cred *cred = current_cred();
 	int err;
 
 	tn = net_generic(net, tun_net_id);
@@ -712,11 +713,12 @@
 
 		/* Check permissions */
 		if (((tun->owner != -1 &&
-		      current->euid != tun->owner) ||
+		      cred->euid != tun->owner) ||
 		     (tun->group != -1 &&
-		      current->egid != tun->group)) &&
-		     !capable(CAP_NET_ADMIN))
+		      cred->egid != tun->group)) &&
+		    !capable(CAP_NET_ADMIN)) {
 			return -EPERM;
+		}
 	}
 	else if (__dev_get_by_name(net, ifr->ifr_name))
 		return -EINVAL;
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 2bccefe..aa79280 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -574,6 +574,7 @@
 {
 	struct usb_device *dev = NULL;
 	struct dev_state *ps;
+	const struct cred *cred = current_cred();
 	int ret;
 
 	lock_kernel();
@@ -617,8 +618,8 @@
 	init_waitqueue_head(&ps->wait);
 	ps->discsignr = 0;
 	ps->disc_pid = get_pid(task_pid(current));
-	ps->disc_uid = current->uid;
-	ps->disc_euid = current->euid;
+	ps->disc_uid = cred->uid;
+	ps->disc_euid = cred->euid;
 	ps->disccontext = NULL;
 	ps->ifclaimed = 0;
 	security_task_getsecid(current, &ps->secid);
@@ -967,6 +968,7 @@
 	struct usb_host_endpoint *ep;
 	struct async *as;
 	struct usb_ctrlrequest *dr = NULL;
+	const struct cred *cred = current_cred();
 	unsigned int u, totlen, isofrmlen;
 	int ret, ifnum = -1;
 	int is_in;
@@ -1174,8 +1176,8 @@
 	as->signr = uurb->signr;
 	as->ifnum = ifnum;
 	as->pid = get_pid(task_pid(current));
-	as->uid = current->uid;
-	as->euid = current->euid;
+	as->uid = cred->uid;
+	as->euid = cred->euid;
 	security_task_getsecid(current, &as->secid);
 	if (!is_in) {
 		if (copy_from_user(as->urb->transfer_buffer, uurb->buffer,
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 9463226..185be76 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -277,8 +277,8 @@
 
 	if (inode) {
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_blocks = 0;
 		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 		switch (mode & S_IFMT) {
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index 3031e32..a43e4ab 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -120,7 +120,7 @@
 	switch (access) {
 	case V9FS_ACCESS_SINGLE:
 	case V9FS_ACCESS_USER:
-		uid = current->fsuid;
+		uid = current_fsuid();
 		any = 0;
 		break;
 
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 8314d3f..8fddfe8 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -215,8 +215,8 @@
 	inode = new_inode(sb);
 	if (inode) {
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_blocks = 0;
 		inode->i_rdev = 0;
 		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index d6cb1a0..93212e4 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -113,8 +113,8 @@
 	struct v9fs_session_info *v9ses = NULL;
 	struct p9_wstat *st = NULL;
 	int mode = S_IRWXUGO | S_ISVTX;
-	uid_t uid = current->fsuid;
-	gid_t gid = current->fsgid;
+	uid_t uid = current_fsuid();
+	gid_t gid = current_fsgid();
 	struct p9_fid *fid;
 	int retval = 0;
 
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index a13b334..415d9c6 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -293,8 +293,8 @@
 	mark_buffer_dirty_inode(bh, inode);
 	affs_brelse(bh);
 
-	inode->i_uid     = current->fsuid;
-	inode->i_gid     = current->fsgid;
+	inode->i_uid     = current_fsuid();
+	inode->i_gid     = current_fsgid();
 	inode->i_ino     = block;
 	inode->i_nlink   = 1;
 	inode->i_mtime   = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 8989c93..a19d64b 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -163,8 +163,8 @@
 
 	/* Fill in defaults */
 
-	*uid        = current->uid;
-	*gid        = current->gid;
+	*uid        = current_uid();
+	*gid        = current_gid();
 	*reserved   = 2;
 	*root       = -1;
 	*blocksize  = -1;
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 3662dd4..c16d9be 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -154,8 +154,8 @@
 	 */
 	inode->i_state = I_DIRTY;
 	inode->i_mode = S_IRUSR | S_IWUSR;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 	return inode;
 }
diff --git a/fs/attr.c b/fs/attr.c
index 7a83819..f436019 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -29,13 +29,13 @@
 
 	/* Make sure a caller can chown. */
 	if ((ia_valid & ATTR_UID) &&
-	    (current->fsuid != inode->i_uid ||
+	    (current_fsuid() != inode->i_uid ||
 	     attr->ia_uid != inode->i_uid) && !capable(CAP_CHOWN))
 		goto error;
 
 	/* Make sure caller can chgrp. */
 	if ((ia_valid & ATTR_GID) &&
-	    (current->fsuid != inode->i_uid ||
+	    (current_fsuid() != inode->i_uid ||
 	    (!in_group_p(attr->ia_gid) && attr->ia_gid != inode->i_gid)) &&
 	    !capable(CAP_CHOWN))
 		goto error;
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index b70eea1..c773680 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -76,8 +76,8 @@
 	substring_t args[MAX_OPT_ARGS];
 	int option;
 
-	*uid = current->uid;
-	*gid = current->gid;
+	*uid = current_uid();
+	*gid = current_gid();
 	*pgrp = task_pgrp_nr(current);
 
 	*minproto = *maxproto = AUTOFS_PROTO_VERSION;
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 33bf8cb..63b7c7a 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -308,7 +308,8 @@
 			goto out;
 		}
 
-		filp = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY);
+		filp = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY,
+				   current_cred());
 		if (IS_ERR(filp)) {
 			err = PTR_ERR(filp);
 			goto out;
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index c7e65bb..7b19802 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -235,8 +235,8 @@
 	substring_t args[MAX_OPT_ARGS];
 	int option;
 
-	*uid = current->uid;
-	*gid = current->gid;
+	*uid = current_uid();
+	*gid = current_gid();
 	*pgrp = task_pgrp_nr(current);
 
 	*minproto = AUTOFS_MIN_PROTO_VERSION;
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 4b67c2a..e02cc8a 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -391,8 +391,8 @@
 		memcpy(&wq->name, &qstr, sizeof(struct qstr));
 		wq->dev = autofs4_get_dev(sbi);
 		wq->ino = autofs4_get_ino(sbi);
-		wq->uid = current->uid;
-		wq->gid = current->gid;
+		wq->uid = current_uid();
+		wq->gid = current_gid();
 		wq->pid = current->pid;
 		wq->tgid = current->tgid;
 		wq->status = -EINTR; /* Status return if interrupted */
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index daae463..4dd1b62 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -106,8 +106,8 @@
 	}
 	set_bit(ino, info->si_imap);
 	info->si_freei--;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current_fsgid();
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 	inode->i_blocks = 0;
 	inode->i_op = &bfs_file_inops;
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index 204cfd1..f1f3f41 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -320,7 +320,7 @@
 	current->mm->free_area_cache = current->mm->mmap_base;
 	current->mm->cached_hole_size = 0;
 
-	compute_creds(bprm);
+	install_exec_creds(bprm);
  	current->flags &= ~PF_FORKNOEXEC;
 #ifdef __sparc__
 	if (N_MAGIC(ex) == NMAGIC) {
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 8fcfa39..f458c12 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -157,7 +157,7 @@
 	int items;
 	elf_addr_t *elf_info;
 	int ei_index = 0;
-	struct task_struct *tsk = current;
+	const struct cred *cred = current_cred();
 	struct vm_area_struct *vma;
 
 	/*
@@ -223,10 +223,10 @@
 	NEW_AUX_ENT(AT_BASE, interp_load_addr);
 	NEW_AUX_ENT(AT_FLAGS, 0);
 	NEW_AUX_ENT(AT_ENTRY, exec->e_entry);
-	NEW_AUX_ENT(AT_UID, tsk->uid);
-	NEW_AUX_ENT(AT_EUID, tsk->euid);
-	NEW_AUX_ENT(AT_GID, tsk->gid);
-	NEW_AUX_ENT(AT_EGID, tsk->egid);
+	NEW_AUX_ENT(AT_UID, cred->uid);
+	NEW_AUX_ENT(AT_EUID, cred->euid);
+	NEW_AUX_ENT(AT_GID, cred->gid);
+	NEW_AUX_ENT(AT_EGID, cred->egid);
  	NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm));
 	NEW_AUX_ENT(AT_EXECFN, bprm->exec);
 	if (k_platform) {
@@ -956,7 +956,7 @@
 	}
 #endif /* ARCH_HAS_SETUP_ADDITIONAL_PAGES */
 
-	compute_creds(bprm);
+	install_exec_creds(bprm);
 	current->flags &= ~PF_FORKNOEXEC;
 	retval = create_elf_tables(bprm, &loc->elf_ex,
 			  load_addr, interp_load_addr);
@@ -1361,6 +1361,7 @@
 static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
 		       struct mm_struct *mm)
 {
+	const struct cred *cred;
 	unsigned int i, len;
 	
 	/* first copy the parameters from user space */
@@ -1388,8 +1389,11 @@
 	psinfo->pr_zomb = psinfo->pr_sname == 'Z';
 	psinfo->pr_nice = task_nice(p);
 	psinfo->pr_flag = p->flags;
-	SET_UID(psinfo->pr_uid, p->uid);
-	SET_GID(psinfo->pr_gid, p->gid);
+	rcu_read_lock();
+	cred = __task_cred(p);
+	SET_UID(psinfo->pr_uid, cred->uid);
+	SET_GID(psinfo->pr_gid, cred->gid);
+	rcu_read_unlock();
 	strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname));
 	
 	return 0;
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 5b5424c..aa5b432 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -404,7 +404,7 @@
 	current->mm->start_stack = current->mm->start_brk + stack_size;
 #endif
 
-	compute_creds(bprm);
+	install_exec_creds(bprm);
 	current->flags &= ~PF_FORKNOEXEC;
 	if (create_elf_fdpic_tables(bprm, current->mm,
 				    &exec_params, &interp_params) < 0)
@@ -475,6 +475,7 @@
 				   struct elf_fdpic_params *exec_params,
 				   struct elf_fdpic_params *interp_params)
 {
+	const struct cred *cred = current_cred();
 	unsigned long sp, csp, nitems;
 	elf_caddr_t __user *argv, *envp;
 	size_t platform_len = 0, len;
@@ -623,10 +624,10 @@
 	NEW_AUX_ENT(AT_BASE,	interp_params->elfhdr_addr);
 	NEW_AUX_ENT(AT_FLAGS,	0);
 	NEW_AUX_ENT(AT_ENTRY,	exec_params->entry_addr);
-	NEW_AUX_ENT(AT_UID,	(elf_addr_t) current->uid);
-	NEW_AUX_ENT(AT_EUID,	(elf_addr_t) current->euid);
-	NEW_AUX_ENT(AT_GID,	(elf_addr_t) current->gid);
-	NEW_AUX_ENT(AT_EGID,	(elf_addr_t) current->egid);
+	NEW_AUX_ENT(AT_UID,	(elf_addr_t) cred->uid);
+	NEW_AUX_ENT(AT_EUID,	(elf_addr_t) cred->euid);
+	NEW_AUX_ENT(AT_GID,	(elf_addr_t) cred->gid);
+	NEW_AUX_ENT(AT_EGID,	(elf_addr_t) cred->egid);
 	NEW_AUX_ENT(AT_SECURE,	security_bprm_secureexec(bprm));
 	NEW_AUX_ENT(AT_EXECFN,	bprm->exec);
 
@@ -1413,6 +1414,7 @@
 static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
 		       struct mm_struct *mm)
 {
+	const struct cred *cred;
 	unsigned int i, len;
 
 	/* first copy the parameters from user space */
@@ -1440,8 +1442,11 @@
 	psinfo->pr_zomb = psinfo->pr_sname == 'Z';
 	psinfo->pr_nice = task_nice(p);
 	psinfo->pr_flag = p->flags;
-	SET_UID(psinfo->pr_uid, p->uid);
-	SET_GID(psinfo->pr_gid, p->gid);
+	rcu_read_lock();
+	cred = __task_cred(p);
+	SET_UID(psinfo->pr_uid, cred->uid);
+	SET_GID(psinfo->pr_gid, cred->gid);
+	rcu_read_unlock();
 	strncpy(psinfo->pr_fname, p->comm, sizeof(psinfo->pr_fname));
 
 	return 0;
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index ccb781a..7bbd5c6 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -880,7 +880,7 @@
 					(libinfo.lib_list[j].loaded)?
 						libinfo.lib_list[j].start_data:UNLOADED_LIB;
 
-	compute_creds(bprm);
+	install_exec_creds(bprm);
  	current->flags &= ~PF_FORKNOEXEC;
 
 	set_binfmt(&flat_format);
diff --git a/fs/binfmt_som.c b/fs/binfmt_som.c
index 74e587a..08644a6 100644
--- a/fs/binfmt_som.c
+++ b/fs/binfmt_som.c
@@ -255,7 +255,7 @@
 	kfree(hpuxhdr);
 
 	set_binfmt(&som_format);
-	compute_creds(bprm);
+	install_exec_creds(bprm);
 	setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT);
 
 	create_som_tables(bprm);
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index 877c854..1e7b874 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -19,7 +19,7 @@
 #define _CIFS_FS_SB_H
 
 #define CIFS_MOUNT_NO_PERM      1 /* do not do client vfs_perm check */
-#define CIFS_MOUNT_SET_UID      2 /* set current->euid in create etc. */
+#define CIFS_MOUNT_SET_UID      2 /* set current's euid in create etc. */
 #define CIFS_MOUNT_SERVER_INUM  4 /* inode numbers from uniqueid from server */
 #define CIFS_MOUNT_DIRECT_IO    8 /* do not write nor read through page cache */
 #define CIFS_MOUNT_NO_XATTR     0x10  /* if set - disable xattr support       */
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 6f21ecb..9d8b978 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -39,7 +39,7 @@
 			unsigned int /* length */ , struct sockaddr *, bool);
 extern unsigned int _GetXid(void);
 extern void _FreeXid(unsigned int);
-#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current->fsuid));
+#define GetXid() (int)_GetXid(); cFYI(1,("CIFS VFS: in %s as Xid: %d with uid: %d",__func__, xid,current_fsuid()));
 #define FreeXid(curr_xid) {_FreeXid(curr_xid); cFYI(1,("CIFS VFS: leaving %s (xid = %d) rc = %d",__func__,curr_xid,(int)rc));}
 extern char *build_path_from_dentry(struct dentry *);
 extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index c7d3417..683dee4 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -836,8 +836,8 @@
 	/* null target name indicates to use *SMBSERVR default called name
 	   if we end up sending RFC1001 session initialize */
 	vol->target_rfc1001_name[0] = 0;
-	vol->linux_uid = current->uid;	/* current->euid instead? */
-	vol->linux_gid = current->gid;
+	vol->linux_uid = current_uid();  /* use current_euid() instead? */
+	vol->linux_gid = current_gid();
 	vol->dir_mode = S_IRWXUGO;
 	/* 2767 perms indicate mandatory locking support */
 	vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP);
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index e962e75..2f02c52 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -235,11 +235,11 @@
 			};
 
 			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
-				args.uid = (__u64) current->fsuid;
+				args.uid = (__u64) current_fsuid();
 				if (inode->i_mode & S_ISGID)
 					args.gid = (__u64) inode->i_gid;
 				else
-					args.gid = (__u64) current->fsgid;
+					args.gid = (__u64) current_fsgid();
 			} else {
 				args.uid = NO_CHANGE_64;
 				args.gid = NO_CHANGE_64;
@@ -271,13 +271,13 @@
 				if ((oplock & CIFS_CREATE_ACTION) &&
 				    (cifs_sb->mnt_cifs_flags &
 				     CIFS_MOUNT_SET_UID)) {
-					newinode->i_uid = current->fsuid;
+					newinode->i_uid = current_fsuid();
 					if (inode->i_mode & S_ISGID)
 						newinode->i_gid =
 							inode->i_gid;
 					else
 						newinode->i_gid =
-							current->fsgid;
+							current_fsgid();
 				}
 			}
 		}
@@ -375,8 +375,8 @@
 			.device	= device_number,
 		};
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
-			args.uid = (__u64) current->fsuid;
-			args.gid = (__u64) current->fsgid;
+			args.uid = (__u64) current_fsuid();
+			args.gid = (__u64) current_fsgid();
 		} else {
 			args.uid = NO_CHANGE_64;
 			args.gid = NO_CHANGE_64;
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index ff8c68d..8b7305e 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1143,11 +1143,11 @@
 				.device	= 0,
 			};
 			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
-				args.uid = (__u64)current->fsuid;
+				args.uid = (__u64)current_fsuid();
 				if (inode->i_mode & S_ISGID)
 					args.gid = (__u64)inode->i_gid;
 				else
-					args.gid = (__u64)current->fsgid;
+					args.gid = (__u64)current_fsgid();
 			} else {
 				args.uid = NO_CHANGE_64;
 				args.gid = NO_CHANGE_64;
@@ -1184,13 +1184,13 @@
 				if (cifs_sb->mnt_cifs_flags &
 				     CIFS_MOUNT_SET_UID) {
 					direntry->d_inode->i_uid =
-						current->fsuid;
+						current_fsuid();
 					if (inode->i_mode & S_ISGID)
 						direntry->d_inode->i_gid =
 							inode->i_gid;
 					else
 						direntry->d_inode->i_gid =
-							current->fsgid;
+							current_fsgid();
 				}
 			}
 		}
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 0088a5b..f946506 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -65,7 +65,7 @@
 	switch (command) {
 		case CIFS_IOC_CHECKUMOUNT:
 			cFYI(1, ("User unmount attempted"));
-			if (cifs_sb->mnt_uid == current->uid)
+			if (cifs_sb->mnt_uid == current_uid())
 				rc = 0;
 			else {
 				rc = -EACCES;
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 9ee3f68..8a82d07 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -338,13 +338,13 @@
 		/*  BB Add support for establishing new tCon and SMB Session  */
 		/*      with userid/password pairs found on the smb session   */
 		/*	for other target tcp/ip addresses 		BB    */
-				if (current->fsuid != treeCon->ses->linux_uid) {
+				if (current_fsuid() != treeCon->ses->linux_uid) {
 					cFYI(1, ("Multiuser mode and UID "
 						 "did not match tcon uid"));
 					read_lock(&cifs_tcp_ses_lock);
 					list_for_each(temp_item, &treeCon->ses->server->smb_ses_list) {
 						ses = list_entry(temp_item, struct cifsSesInfo, smb_ses_list);
-						if (ses->linux_uid == current->fsuid) {
+						if (ses->linux_uid == current_fsuid()) {
 							if (ses->server == treeCon->ses->server) {
 								cFYI(1, ("found matching uid substitute right smb_uid"));
 								buffer->Uid = ses->Suid;
diff --git a/fs/coda/cache.c b/fs/coda/cache.c
index 8a23703..a5bf577 100644
--- a/fs/coda/cache.c
+++ b/fs/coda/cache.c
@@ -32,8 +32,8 @@
 	struct coda_inode_info *cii = ITOC(inode);
 
 	cii->c_cached_epoch = atomic_read(&permission_epoch);
-	if (cii->c_uid != current->fsuid) {
-                cii->c_uid = current->fsuid;
+	if (cii->c_uid != current_fsuid()) {
+		cii->c_uid = current_fsuid();
                 cii->c_cached_perm = mask;
         } else
                 cii->c_cached_perm |= mask;
@@ -60,7 +60,7 @@
         int hit;
 	
         hit = (mask & cii->c_cached_perm) == mask &&
-		cii->c_uid == current->fsuid &&
+		cii->c_uid == current_fsuid() &&
 		cii->c_cached_epoch == atomic_read(&permission_epoch);
 
         return hit;
diff --git a/fs/coda/file.c b/fs/coda/file.c
index 29137ff..466303d 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -13,6 +13,7 @@
 #include <linux/file.h>
 #include <linux/fs.h>
 #include <linux/stat.h>
+#include <linux/cred.h>
 #include <linux/errno.h>
 #include <linux/smp_lock.h>
 #include <linux/string.h>
@@ -174,7 +175,7 @@
 	BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
 
 	err = venus_close(coda_inode->i_sb, coda_i2f(coda_inode),
-			  coda_flags, coda_file->f_uid);
+			  coda_flags, coda_file->f_cred->fsuid);
 
 	host_inode = cfi->cfi_container->f_path.dentry->d_inode;
 	cii = ITOC(coda_inode);
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index ce432bc..c274d94 100644
--- a/fs/coda/upcall.c
+++ b/fs/coda/upcall.c
@@ -52,7 +52,7 @@
         inp->ih.opcode = opcode;
 	inp->ih.pid = current->pid;
 	inp->ih.pgid = task_pgrp_nr(current);
-	inp->ih.uid = current->fsuid;
+	inp->ih.uid = current_fsuid();
 
 	return (void*)inp;
 }
diff --git a/fs/compat.c b/fs/compat.c
index e5f49f5..d1ece79 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1393,10 +1393,20 @@
 	if (!bprm)
 		goto out_ret;
 
+	retval = mutex_lock_interruptible(&current->cred_exec_mutex);
+	if (retval < 0)
+		goto out_free;
+
+	retval = -ENOMEM;
+	bprm->cred = prepare_exec_creds();
+	if (!bprm->cred)
+		goto out_unlock;
+	check_unsafe_exec(bprm);
+
 	file = open_exec(filename);
 	retval = PTR_ERR(file);
 	if (IS_ERR(file))
-		goto out_kfree;
+		goto out_unlock;
 
 	sched_exec();
 
@@ -1410,14 +1420,10 @@
 
 	bprm->argc = compat_count(argv, MAX_ARG_STRINGS);
 	if ((retval = bprm->argc) < 0)
-		goto out_mm;
+		goto out;
 
 	bprm->envc = compat_count(envp, MAX_ARG_STRINGS);
 	if ((retval = bprm->envc) < 0)
-		goto out_mm;
-
-	retval = security_bprm_alloc(bprm);
-	if (retval)
 		goto out;
 
 	retval = prepare_binprm(bprm);
@@ -1438,19 +1444,16 @@
 		goto out;
 
 	retval = search_binary_handler(bprm, regs);
-	if (retval >= 0) {
-		/* execve success */
-		security_bprm_free(bprm);
-		acct_update_integrals(current);
-		free_bprm(bprm);
-		return retval;
-	}
+	if (retval < 0)
+		goto out;
+
+	/* execve succeeded */
+	mutex_unlock(&current->cred_exec_mutex);
+	acct_update_integrals(current);
+	free_bprm(bprm);
+	return retval;
 
 out:
-	if (bprm->security)
-		security_bprm_free(bprm);
-
-out_mm:
 	if (bprm->mm)
 		mmput(bprm->mm);
 
@@ -1460,7 +1463,10 @@
 		fput(bprm->file);
 	}
 
-out_kfree:
+out_unlock:
+	mutex_unlock(&current->cred_exec_mutex);
+
+out_free:
 	free_bprm(bprm);
 
 out_ret:
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 4a714f6c..5d61b7c 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -222,8 +222,8 @@
 		return -ENOMEM;
 
 	inode->i_ino = number+2;
-	inode->i_uid = config.setuid ? config.uid : current->fsuid;
-	inode->i_gid = config.setgid ? config.gid : current->fsgid;
+	inode->i_uid = config.setuid ? config.uid : current_fsuid();
+	inode->i_gid = config.setgid ? config.gid : current_fsgid();
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
 	init_special_inode(inode, S_IFCHR|config.mode, device);
 	inode->i_private = tty;
diff --git a/fs/dquot.c b/fs/dquot.c
index 5e95261..c237ccc 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -874,7 +874,7 @@
 
 	switch (dquot->dq_type) {
 		case USRQUOTA:
-			return current->fsuid == dquot->dq_id;
+			return current_fsuid() == dquot->dq_id;
 		case GRPQUOTA:
 			return in_group_p(dquot->dq_id);
 	}
@@ -981,7 +981,7 @@
 		MINOR(dquot->dq_sb->s_dev));
 	if (ret)
 		goto attr_err_out;
-	ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current->user->uid);
+	ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current_uid());
 	if (ret)
 		goto attr_err_out;
 	genlmsg_end(skb, msg_head);
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 3504cf9..a75026d 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -691,7 +691,8 @@
 void ecryptfs_destroy_kthread(void);
 int ecryptfs_privileged_open(struct file **lower_file,
 			     struct dentry *lower_dentry,
-			     struct vfsmount *lower_mnt);
+			     struct vfsmount *lower_mnt,
+			     const struct cred *cred);
 int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry);
 
 #endif /* #ifndef ECRYPTFS_KERNEL_H */
diff --git a/fs/ecryptfs/kthread.c b/fs/ecryptfs/kthread.c
index c440c6b..c6d7a4d 100644
--- a/fs/ecryptfs/kthread.c
+++ b/fs/ecryptfs/kthread.c
@@ -73,7 +73,7 @@
 				mntget(req->lower_mnt);
 				(*req->lower_file) = dentry_open(
 					req->lower_dentry, req->lower_mnt,
-					(O_RDWR | O_LARGEFILE));
+					(O_RDWR | O_LARGEFILE), current_cred());
 				req->flags |= ECRYPTFS_REQ_PROCESSED;
 			}
 			wake_up(&req->wait);
@@ -132,7 +132,8 @@
  */
 int ecryptfs_privileged_open(struct file **lower_file,
 			     struct dentry *lower_dentry,
-			     struct vfsmount *lower_mnt)
+			     struct vfsmount *lower_mnt,
+			     const struct cred *cred)
 {
 	struct ecryptfs_open_req *req;
 	int rc = 0;
@@ -143,7 +144,7 @@
 	dget(lower_dentry);
 	mntget(lower_mnt);
 	(*lower_file) = dentry_open(lower_dentry, lower_mnt,
-				    (O_RDWR | O_LARGEFILE));
+				    (O_RDWR | O_LARGEFILE), cred);
 	if (!IS_ERR(*lower_file))
 		goto out;
 	req = kmem_cache_alloc(ecryptfs_open_req_cache, GFP_KERNEL);
@@ -184,7 +185,7 @@
 		dget(lower_dentry);
 		mntget(lower_mnt);
 		(*lower_file) = dentry_open(lower_dentry, lower_mnt,
-					    (O_RDONLY | O_LARGEFILE));
+					    (O_RDONLY | O_LARGEFILE), cred);
 		if (IS_ERR(*lower_file)) {
 			rc = PTR_ERR(*req->lower_file);
 			(*lower_file) = NULL;
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 64d2ba9..fd63071 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -115,6 +115,7 @@
  */
 int ecryptfs_init_persistent_file(struct dentry *ecryptfs_dentry)
 {
+	const struct cred *cred = current_cred();
 	struct ecryptfs_inode_info *inode_info =
 		ecryptfs_inode_to_private(ecryptfs_dentry->d_inode);
 	int rc = 0;
@@ -127,7 +128,7 @@
 
 		lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
 		rc = ecryptfs_privileged_open(&inode_info->lower_file,
-						     lower_dentry, lower_mnt);
+					      lower_dentry, lower_mnt, cred);
 		if (rc || IS_ERR(inode_info->lower_file)) {
 			printk(KERN_ERR "Error opening lower persistent file "
 			       "for lower_dentry [0x%p] and lower_mnt [0x%p]; "
diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c
index c698397..6913f72 100644
--- a/fs/ecryptfs/messaging.c
+++ b/fs/ecryptfs/messaging.c
@@ -360,7 +360,8 @@
 	struct ecryptfs_msg_ctx *msg_ctx;
 	size_t msg_size;
 	struct nsproxy *nsproxy;
-	struct user_namespace *current_user_ns;
+	struct user_namespace *tsk_user_ns;
+	uid_t ctx_euid;
 	int rc;
 
 	if (msg->index >= ecryptfs_message_buf_len) {
@@ -384,9 +385,9 @@
 		mutex_unlock(&ecryptfs_daemon_hash_mux);
 		goto wake_up;
 	}
-	current_user_ns = nsproxy->user_ns;
-	rc = ecryptfs_find_daemon_by_euid(&daemon, msg_ctx->task->euid,
-					  current_user_ns);
+	tsk_user_ns = __task_cred(msg_ctx->task)->user->user_ns;
+	ctx_euid = task_euid(msg_ctx->task);
+	rc = ecryptfs_find_daemon_by_euid(&daemon, ctx_euid, tsk_user_ns);
 	rcu_read_unlock();
 	mutex_unlock(&ecryptfs_daemon_hash_mux);
 	if (rc) {
@@ -394,28 +395,28 @@
 		printk(KERN_WARNING "%s: User [%d] received a "
 		       "message response from process [0x%p] but does "
 		       "not have a registered daemon\n", __func__,
-		       msg_ctx->task->euid, pid);
+		       ctx_euid, pid);
 		goto wake_up;
 	}
-	if (msg_ctx->task->euid != euid) {
+	if (ctx_euid != euid) {
 		rc = -EBADMSG;
 		printk(KERN_WARNING "%s: Received message from user "
 		       "[%d]; expected message from user [%d]\n", __func__,
-		       euid, msg_ctx->task->euid);
+		       euid, ctx_euid);
 		goto unlock;
 	}
-	if (current_user_ns != user_ns) {
+	if (tsk_user_ns != user_ns) {
 		rc = -EBADMSG;
 		printk(KERN_WARNING "%s: Received message from user_ns "
 		       "[0x%p]; expected message from user_ns [0x%p]\n",
-		       __func__, user_ns, nsproxy->user_ns);
+		       __func__, user_ns, tsk_user_ns);
 		goto unlock;
 	}
 	if (daemon->pid != pid) {
 		rc = -EBADMSG;
 		printk(KERN_ERR "%s: User [%d] sent a message response "
 		       "from an unrecognized process [0x%p]\n",
-		       __func__, msg_ctx->task->euid, pid);
+		       __func__, ctx_euid, pid);
 		goto unlock;
 	}
 	if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_PENDING) {
@@ -464,14 +465,14 @@
 			     struct ecryptfs_msg_ctx **msg_ctx)
 {
 	struct ecryptfs_daemon *daemon;
+	uid_t euid = current_euid();
 	int rc;
 
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
-					  current->nsproxy->user_ns);
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
 	if (rc || !daemon) {
 		rc = -ENOTCONN;
 		printk(KERN_ERR "%s: User [%d] does not have a daemon "
-		       "registered\n", __func__, current->euid);
+		       "registered\n", __func__, euid);
 		goto out;
 	}
 	mutex_lock(&ecryptfs_msg_ctx_lists_mux);
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index b484792..efd95a0 100644
--- a/fs/ecryptfs/miscdev.c
+++ b/fs/ecryptfs/miscdev.c
@@ -42,12 +42,12 @@
 {
 	struct ecryptfs_daemon *daemon;
 	unsigned int mask = 0;
+	uid_t euid = current_euid();
 	int rc;
 
 	mutex_lock(&ecryptfs_daemon_hash_mux);
 	/* TODO: Just use file->private_data? */
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
-					  current->nsproxy->user_ns);
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
 	BUG_ON(rc || !daemon);
 	mutex_lock(&daemon->mux);
 	mutex_unlock(&ecryptfs_daemon_hash_mux);
@@ -83,6 +83,7 @@
 ecryptfs_miscdev_open(struct inode *inode, struct file *file)
 {
 	struct ecryptfs_daemon *daemon = NULL;
+	uid_t euid = current_euid();
 	int rc;
 
 	mutex_lock(&ecryptfs_daemon_hash_mux);
@@ -93,11 +94,9 @@
 		       "count; rc = [%d]\n", __func__, rc);
 		goto out_unlock_daemon_list;
 	}
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
-					  current->nsproxy->user_ns);
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
 	if (rc || !daemon) {
-		rc = ecryptfs_spawn_daemon(&daemon, current->euid,
-					   current->nsproxy->user_ns,
+		rc = ecryptfs_spawn_daemon(&daemon, euid, current_user_ns(),
 					   task_pid(current));
 		if (rc) {
 			printk(KERN_ERR "%s: Error attempting to spawn daemon; "
@@ -147,11 +146,11 @@
 ecryptfs_miscdev_release(struct inode *inode, struct file *file)
 {
 	struct ecryptfs_daemon *daemon = NULL;
+	uid_t euid = current_euid();
 	int rc;
 
 	mutex_lock(&ecryptfs_daemon_hash_mux);
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
-					  current->nsproxy->user_ns);
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
 	BUG_ON(rc || !daemon);
 	mutex_lock(&daemon->mux);
 	BUG_ON(daemon->pid != task_pid(current));
@@ -246,12 +245,12 @@
 	char packet_length[3];
 	size_t i;
 	size_t total_length;
+	uid_t euid = current_euid();
 	int rc;
 
 	mutex_lock(&ecryptfs_daemon_hash_mux);
 	/* TODO: Just use file->private_data? */
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
-					  current->nsproxy->user_ns);
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
 	BUG_ON(rc || !daemon);
 	mutex_lock(&daemon->mux);
 	if (daemon->flags & ECRYPTFS_DAEMON_ZOMBIE) {
@@ -290,8 +289,8 @@
 		 * message from the queue; try again */
 		goto check_list;
 	}
-	BUG_ON(current->euid != daemon->euid);
-	BUG_ON(current->nsproxy->user_ns != daemon->user_ns);
+	BUG_ON(euid != daemon->euid);
+	BUG_ON(current_user_ns() != daemon->user_ns);
 	BUG_ON(task_pid(current) != daemon->pid);
 	msg_ctx = list_first_entry(&daemon->msg_ctx_out_queue,
 				   struct ecryptfs_msg_ctx, daemon_out_list);
@@ -414,6 +413,7 @@
 	size_t packet_size, packet_size_length, i;
 	ssize_t sz = 0;
 	char *data;
+	uid_t euid = current_euid();
 	int rc;
 
 	if (count == 0)
@@ -463,8 +463,7 @@
 			goto out_free;
 		}
 		rc = ecryptfs_miscdev_response(&data[i], packet_size,
-					       current->euid,
-					       current->nsproxy->user_ns,
+					       euid, current_user_ns(),
 					       task_pid(current), seq);
 		if (rc)
 			printk(KERN_WARNING "%s: Failed to deliver miscdev "
diff --git a/fs/exec.c b/fs/exec.c
index 4e834f1..32f13e2 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -55,6 +55,7 @@
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
 #include <asm/tlb.h>
+#include "internal.h"
 
 #ifdef __alpha__
 /* for /sbin/loader handling in search_binary_handler() */
@@ -980,7 +981,7 @@
 	/* This is the point of no return */
 	current->sas_ss_sp = current->sas_ss_size = 0;
 
-	if (current->euid == current->uid && current->egid == current->gid)
+	if (current_euid() == current_uid() && current_egid() == current_gid())
 		set_dumpable(current->mm, 1);
 	else
 		set_dumpable(current->mm, suid_dumpable);
@@ -1007,16 +1008,17 @@
 	 */
 	current->mm->task_size = TASK_SIZE;
 
-	if (bprm->e_uid != current->euid || bprm->e_gid != current->egid) {
-		suid_keys(current);
-		set_dumpable(current->mm, suid_dumpable);
+	/* install the new credentials */
+	if (bprm->cred->uid != current_euid() ||
+	    bprm->cred->gid != current_egid()) {
 		current->pdeath_signal = 0;
 	} else if (file_permission(bprm->file, MAY_READ) ||
-			(bprm->interp_flags & BINPRM_FLAGS_ENFORCE_NONDUMP)) {
-		suid_keys(current);
+		   bprm->interp_flags & BINPRM_FLAGS_ENFORCE_NONDUMP) {
 		set_dumpable(current->mm, suid_dumpable);
 	}
 
+	current->personality &= ~bprm->per_clear;
+
 	/* An exec changes our domain. We are no longer part of the thread
 	   group */
 
@@ -1033,13 +1035,50 @@
 
 EXPORT_SYMBOL(flush_old_exec);
 
+/*
+ * install the new credentials for this executable
+ */
+void install_exec_creds(struct linux_binprm *bprm)
+{
+	security_bprm_committing_creds(bprm);
+
+	commit_creds(bprm->cred);
+	bprm->cred = NULL;
+
+	/* cred_exec_mutex must be held at least to this point to prevent
+	 * ptrace_attach() from altering our determination of the task's
+	 * credentials; any time after this it may be unlocked */
+
+	security_bprm_committed_creds(bprm);
+}
+EXPORT_SYMBOL(install_exec_creds);
+
+/*
+ * determine how safe it is to execute the proposed program
+ * - the caller must hold current->cred_exec_mutex to protect against
+ *   PTRACE_ATTACH
+ */
+void check_unsafe_exec(struct linux_binprm *bprm)
+{
+	struct task_struct *p = current;
+
+	bprm->unsafe = tracehook_unsafe_exec(p);
+
+	if (atomic_read(&p->fs->count) > 1 ||
+	    atomic_read(&p->files->count) > 1 ||
+	    atomic_read(&p->sighand->count) > 1)
+		bprm->unsafe |= LSM_UNSAFE_SHARE;
+}
+
 /* 
  * Fill the binprm structure from the inode. 
  * Check permissions, then read the first 128 (BINPRM_BUF_SIZE) bytes
+ *
+ * This may be called multiple times for binary chains (scripts for example).
  */
 int prepare_binprm(struct linux_binprm *bprm)
 {
-	int mode;
+	umode_t mode;
 	struct inode * inode = bprm->file->f_path.dentry->d_inode;
 	int retval;
 
@@ -1047,14 +1086,15 @@
 	if (bprm->file->f_op == NULL)
 		return -EACCES;
 
-	bprm->e_uid = current->euid;
-	bprm->e_gid = current->egid;
+	/* clear any previous set[ug]id data from a previous binary */
+	bprm->cred->euid = current_euid();
+	bprm->cred->egid = current_egid();
 
-	if(!(bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID)) {
+	if (!(bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID)) {
 		/* Set-uid? */
 		if (mode & S_ISUID) {
-			current->personality &= ~PER_CLEAR_ON_SETID;
-			bprm->e_uid = inode->i_uid;
+			bprm->per_clear |= PER_CLEAR_ON_SETID;
+			bprm->cred->euid = inode->i_uid;
 		}
 
 		/* Set-gid? */
@@ -1064,52 +1104,23 @@
 		 * executable.
 		 */
 		if ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) {
-			current->personality &= ~PER_CLEAR_ON_SETID;
-			bprm->e_gid = inode->i_gid;
+			bprm->per_clear |= PER_CLEAR_ON_SETID;
+			bprm->cred->egid = inode->i_gid;
 		}
 	}
 
 	/* fill in binprm security blob */
-	retval = security_bprm_set(bprm);
+	retval = security_bprm_set_creds(bprm);
 	if (retval)
 		return retval;
+	bprm->cred_prepared = 1;
 
-	memset(bprm->buf,0,BINPRM_BUF_SIZE);
-	return kernel_read(bprm->file,0,bprm->buf,BINPRM_BUF_SIZE);
+	memset(bprm->buf, 0, BINPRM_BUF_SIZE);
+	return kernel_read(bprm->file, 0, bprm->buf, BINPRM_BUF_SIZE);
 }
 
 EXPORT_SYMBOL(prepare_binprm);
 
-static int unsafe_exec(struct task_struct *p)
-{
-	int unsafe = tracehook_unsafe_exec(p);
-
-	if (atomic_read(&p->fs->count) > 1 ||
-	    atomic_read(&p->files->count) > 1 ||
-	    atomic_read(&p->sighand->count) > 1)
-		unsafe |= LSM_UNSAFE_SHARE;
-
-	return unsafe;
-}
-
-void compute_creds(struct linux_binprm *bprm)
-{
-	int unsafe;
-
-	if (bprm->e_uid != current->uid) {
-		suid_keys(current);
-		current->pdeath_signal = 0;
-	}
-	exec_keys(current);
-
-	task_lock(current);
-	unsafe = unsafe_exec(current);
-	security_bprm_apply_creds(bprm, unsafe);
-	task_unlock(current);
-	security_bprm_post_apply_creds(bprm);
-}
-EXPORT_SYMBOL(compute_creds);
-
 /*
  * Arguments are '\0' separated strings found at the location bprm->p
  * points to; chop off the first by relocating brpm->p to right after
@@ -1262,6 +1273,8 @@
 void free_bprm(struct linux_binprm *bprm)
 {
 	free_arg_pages(bprm);
+	if (bprm->cred)
+		abort_creds(bprm->cred);
 	kfree(bprm);
 }
 
@@ -1287,10 +1300,20 @@
 	if (!bprm)
 		goto out_files;
 
+	retval = mutex_lock_interruptible(&current->cred_exec_mutex);
+	if (retval < 0)
+		goto out_free;
+
+	retval = -ENOMEM;
+	bprm->cred = prepare_exec_creds();
+	if (!bprm->cred)
+		goto out_unlock;
+	check_unsafe_exec(bprm);
+
 	file = open_exec(filename);
 	retval = PTR_ERR(file);
 	if (IS_ERR(file))
-		goto out_kfree;
+		goto out_unlock;
 
 	sched_exec();
 
@@ -1304,14 +1327,10 @@
 
 	bprm->argc = count(argv, MAX_ARG_STRINGS);
 	if ((retval = bprm->argc) < 0)
-		goto out_mm;
+		goto out;
 
 	bprm->envc = count(envp, MAX_ARG_STRINGS);
 	if ((retval = bprm->envc) < 0)
-		goto out_mm;
-
-	retval = security_bprm_alloc(bprm);
-	if (retval)
 		goto out;
 
 	retval = prepare_binprm(bprm);
@@ -1333,21 +1352,18 @@
 
 	current->flags &= ~PF_KTHREAD;
 	retval = search_binary_handler(bprm,regs);
-	if (retval >= 0) {
-		/* execve success */
-		security_bprm_free(bprm);
-		acct_update_integrals(current);
-		free_bprm(bprm);
-		if (displaced)
-			put_files_struct(displaced);
-		return retval;
-	}
+	if (retval < 0)
+		goto out;
+
+	/* execve succeeded */
+	mutex_unlock(&current->cred_exec_mutex);
+	acct_update_integrals(current);
+	free_bprm(bprm);
+	if (displaced)
+		put_files_struct(displaced);
+	return retval;
 
 out:
-	if (bprm->security)
-		security_bprm_free(bprm);
-
-out_mm:
 	if (bprm->mm)
 		mmput (bprm->mm);
 
@@ -1356,7 +1372,11 @@
 		allow_write_access(bprm->file);
 		fput(bprm->file);
 	}
-out_kfree:
+
+out_unlock:
+	mutex_unlock(&current->cred_exec_mutex);
+
+out_free:
 	free_bprm(bprm);
 
 out_files:
@@ -1388,6 +1408,7 @@
  */
 static int format_corename(char *corename, long signr)
 {
+	const struct cred *cred = current_cred();
 	const char *pat_ptr = core_pattern;
 	int ispipe = (*pat_ptr == '|');
 	char *out_ptr = corename;
@@ -1424,7 +1445,7 @@
 			/* uid */
 			case 'u':
 				rc = snprintf(out_ptr, out_end - out_ptr,
-					      "%d", current->uid);
+					      "%d", cred->uid);
 				if (rc > out_end - out_ptr)
 					goto out;
 				out_ptr += rc;
@@ -1432,7 +1453,7 @@
 			/* gid */
 			case 'g':
 				rc = snprintf(out_ptr, out_end - out_ptr,
-					      "%d", current->gid);
+					      "%d", cred->gid);
 				if (rc > out_end - out_ptr)
 					goto out;
 				out_ptr += rc;
@@ -1708,8 +1729,9 @@
 	struct linux_binfmt * binfmt;
 	struct inode * inode;
 	struct file * file;
+	const struct cred *old_cred;
+	struct cred *cred;
 	int retval = 0;
-	int fsuid = current->fsuid;
 	int flag = 0;
 	int ispipe = 0;
 	unsigned long core_limit = current->signal->rlim[RLIMIT_CORE].rlim_cur;
@@ -1722,12 +1744,20 @@
 	binfmt = current->binfmt;
 	if (!binfmt || !binfmt->core_dump)
 		goto fail;
+
+	cred = prepare_creds();
+	if (!cred) {
+		retval = -ENOMEM;
+		goto fail;
+	}
+
 	down_write(&mm->mmap_sem);
 	/*
 	 * If another thread got here first, or we are not dumpable, bail out.
 	 */
 	if (mm->core_state || !get_dumpable(mm)) {
 		up_write(&mm->mmap_sem);
+		put_cred(cred);
 		goto fail;
 	}
 
@@ -1738,12 +1768,16 @@
 	 */
 	if (get_dumpable(mm) == 2) {	/* Setuid core dump mode */
 		flag = O_EXCL;		/* Stop rewrite attacks */
-		current->fsuid = 0;	/* Dump root private */
+		cred->fsuid = 0;	/* Dump root private */
 	}
 
 	retval = coredump_wait(exit_code, &core_state);
-	if (retval < 0)
+	if (retval < 0) {
+		put_cred(cred);
 		goto fail;
+	}
+
+	old_cred = override_creds(cred);
 
 	/*
 	 * Clear any false indication of pending signals that might
@@ -1815,7 +1849,7 @@
 	 * Dont allow local users get cute and trick others to coredump
 	 * into their pre-created files:
 	 */
-	if (inode->i_uid != current->fsuid)
+	if (inode->i_uid != current_fsuid())
 		goto close_fail;
 	if (!file->f_op)
 		goto close_fail;
@@ -1834,7 +1868,8 @@
 	if (helper_argv)
 		argv_free(helper_argv);
 
-	current->fsuid = fsuid;
+	revert_creds(old_cred);
+	put_cred(cred);
 	coredump_finish(mm);
 fail:
 	return retval;
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 80246ba..ec1fb91 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/mount.h>
 #include <linux/namei.h>
+#include <linux/sched.h>
 
 #define dprintk(fmt, args...) do{}while(0)
 
@@ -249,6 +250,7 @@
 static int get_name(struct vfsmount *mnt, struct dentry *dentry,
 		char *name, struct dentry *child)
 {
+	const struct cred *cred = current_cred();
 	struct inode *dir = dentry->d_inode;
 	int error;
 	struct file *file;
@@ -263,7 +265,7 @@
 	/*
 	 * Open the directory ...
 	 */
-	file = dentry_open(dget(dentry), mntget(mnt), O_RDONLY);
+	file = dentry_open(dget(dentry), mntget(mnt), O_RDONLY, cred);
 	error = PTR_ERR(file);
 	if (IS_ERR(file))
 		goto out;
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index 6dac7ba..4a29d63 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -1193,7 +1193,7 @@
 	free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
 	root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
 	if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
-		sbi->s_resuid != current->fsuid &&
+		sbi->s_resuid != current_fsuid() &&
 		(sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) {
 		return 0;
 	}
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index f597413..8d0add6 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -550,7 +550,7 @@
 
 	sb->s_dirt = 1;
 	mark_buffer_dirty(bh2);
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	if (test_opt (sb, GRPID))
 		inode->i_gid = dir->i_gid;
 	else if (dir->i_mode & S_ISGID) {
@@ -558,7 +558,7 @@
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 	inode->i_mode = mode;
 
 	inode->i_ino = ino;
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index f5b57a2..0dbf1c0 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -1422,7 +1422,7 @@
 	free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
 	root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
 	if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
-		sbi->s_resuid != current->fsuid &&
+		sbi->s_resuid != current_fsuid() &&
 		(sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) {
 		return 0;
 	}
diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 47b678d..490bd0e 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -539,7 +539,7 @@
 		percpu_counter_inc(&sbi->s_dirs_counter);
 	sb->s_dirt = 1;
 
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	if (test_opt (sb, GRPID))
 		inode->i_gid = dir->i_gid;
 	else if (dir->i_mode & S_ISGID) {
@@ -547,7 +547,7 @@
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 	inode->i_mode = mode;
 
 	inode->i_ino = ino;
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index d2003cd..a932b9a 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -624,7 +624,7 @@
 		return 1;
 
 	/* Hm, nope.  Are (enough) root reserved blocks available? */
-	if (sbi->s_resuid == current->fsuid ||
+	if (sbi->s_resuid == current_fsuid() ||
 	    ((sbi->s_resgid != 0) && in_group_p(sbi->s_resgid)) ||
 	    capable(CAP_SYS_RESOURCE)) {
 		if (free_blocks >= (nblocks + dirty_blocks))
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 2a117e2..08cac9f 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -787,7 +787,7 @@
 		spin_unlock(sb_bgl_lock(sbi, flex_group));
 	}
 
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	if (test_opt(sb, GRPID))
 		inode->i_gid = dir->i_gid;
 	else if (dir->i_mode & S_ISGID) {
@@ -795,7 +795,7 @@
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 	inode->i_mode = mode;
 
 	inode->i_ino = ino + group * EXT4_INODES_PER_GROUP(sb);
diff --git a/fs/fat/file.c b/fs/fat/file.c
index f06a4e5..0a7f4a9 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -304,7 +304,7 @@
 {
 	mode_t allow_utime = sbi->options.allow_utime;
 
-	if (current->fsuid != inode->i_uid) {
+	if (current_fsuid() != inode->i_uid) {
 		if (in_group_p(inode->i_gid))
 			allow_utime >>= 3;
 		if (allow_utime & MAY_WRITE)
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index bdd8fb7..d937aaf 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -926,8 +926,8 @@
 
 	opts->isvfat = is_vfat;
 
-	opts->fs_uid = current->uid;
-	opts->fs_gid = current->gid;
+	opts->fs_uid = current_uid();
+	opts->fs_gid = current_gid();
 	opts->fs_fmask = opts->fs_dmask = current->fs->umask;
 	opts->allow_utime = -1;
 	opts->codepage = fat_default_codepage;
diff --git a/fs/fcntl.c b/fs/fcntl.c
index ac4f7db..87c39f1 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -205,13 +205,14 @@
 int __f_setown(struct file *filp, struct pid *pid, enum pid_type type,
 		int force)
 {
+	const struct cred *cred = current_cred();
 	int err;
 	
 	err = security_file_set_fowner(filp);
 	if (err)
 		return err;
 
-	f_modown(filp, pid, type, current->uid, current->euid, force);
+	f_modown(filp, pid, type, cred->uid, cred->euid, force);
 	return 0;
 }
 EXPORT_SYMBOL(__f_setown);
@@ -400,10 +401,17 @@
 static inline int sigio_perm(struct task_struct *p,
                              struct fown_struct *fown, int sig)
 {
-	return (((fown->euid == 0) ||
-		 (fown->euid == p->suid) || (fown->euid == p->uid) ||
-		 (fown->uid == p->suid) || (fown->uid == p->uid)) &&
-		!security_file_send_sigiotask(p, fown, sig));
+	const struct cred *cred;
+	int ret;
+
+	rcu_read_lock();
+	cred = __task_cred(p);
+	ret = ((fown->euid == 0 ||
+		fown->euid == cred->suid || fown->euid == cred->uid ||
+		fown->uid  == cred->suid || fown->uid  == cred->uid) &&
+	       !security_file_send_sigiotask(p, fown, sig));
+	rcu_read_unlock();
+	return ret;
 }
 
 static void send_sigio_to_task(struct task_struct *p,
diff --git a/fs/file_table.c b/fs/file_table.c
index 5ad0eca..0fbcacc 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -36,7 +36,9 @@
 
 static inline void file_free_rcu(struct rcu_head *head)
 {
-	struct file *f =  container_of(head, struct file, f_u.fu_rcuhead);
+	struct file *f = container_of(head, struct file, f_u.fu_rcuhead);
+
+	put_cred(f->f_cred);
 	kmem_cache_free(filp_cachep, f);
 }
 
@@ -94,7 +96,7 @@
  */
 struct file *get_empty_filp(void)
 {
-	struct task_struct *tsk;
+	const struct cred *cred = current_cred();
 	static int old_max;
 	struct file * f;
 
@@ -118,12 +120,10 @@
 	if (security_file_alloc(f))
 		goto fail_sec;
 
-	tsk = current;
 	INIT_LIST_HEAD(&f->f_u.fu_list);
 	atomic_long_set(&f->f_count, 1);
 	rwlock_init(&f->f_owner.lock);
-	f->f_uid = tsk->fsuid;
-	f->f_gid = tsk->fsgid;
+	f->f_cred = get_cred(cred);
 	eventpoll_init_file(f);
 	/* f->f_version: 0 */
 	return f;
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index b723614..fba5716 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -87,8 +87,8 @@
 
 static void fuse_req_init_context(struct fuse_req *req)
 {
-	req->in.h.uid = current->fsuid;
-	req->in.h.gid = current->fsgid;
+	req->in.h.uid = current_fsuid();
+	req->in.h.gid = current_fsgid();
 	req->in.h.pid = current->pid;
 }
 
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index fd03330..95bc22b 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -869,18 +869,25 @@
  */
 int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task)
 {
+	const struct cred *cred;
+	int ret;
+
 	if (fc->flags & FUSE_ALLOW_OTHER)
 		return 1;
 
-	if (task->euid == fc->user_id &&
-	    task->suid == fc->user_id &&
-	    task->uid == fc->user_id &&
-	    task->egid == fc->group_id &&
-	    task->sgid == fc->group_id &&
-	    task->gid == fc->group_id)
-		return 1;
+	rcu_read_lock();
+	ret = 0;
+	cred = __task_cred(task);
+	if (cred->euid == fc->user_id &&
+	    cred->suid == fc->user_id &&
+	    cred->uid  == fc->user_id &&
+	    cred->egid == fc->group_id &&
+	    cred->sgid == fc->group_id &&
+	    cred->gid  == fc->group_id)
+		ret = 1;
+	rcu_read_unlock();
 
-	return 0;
+	return ret;
 }
 
 static int fuse_access(struct inode *inode, int mask)
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 7cee695..d576168 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -705,18 +705,18 @@
 	    (dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
 		if (S_ISDIR(*mode))
 			*mode |= S_ISUID;
-		else if (dip->i_inode.i_uid != current->fsuid)
+		else if (dip->i_inode.i_uid != current_fsuid())
 			*mode &= ~07111;
 		*uid = dip->i_inode.i_uid;
 	} else
-		*uid = current->fsuid;
+		*uid = current_fsuid();
 
 	if (dip->i_inode.i_mode & S_ISGID) {
 		if (S_ISDIR(*mode))
 			*mode |= S_ISGID;
 		*gid = dip->i_inode.i_gid;
 	} else
-		*gid = current->fsgid;
+		*gid = current_fsgid();
 }
 
 static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
@@ -1124,8 +1124,8 @@
 		return -EPERM;
 
 	if ((dip->i_inode.i_mode & S_ISVTX) &&
-	    dip->i_inode.i_uid != current->fsuid &&
-	    ip->i_inode.i_uid != current->fsuid && !capable(CAP_FOWNER))
+	    dip->i_inode.i_uid != current_fsuid() &&
+	    ip->i_inode.i_uid != current_fsuid() && !capable(CAP_FOWNER))
 		return -EPERM;
 
 	if (IS_APPEND(&dip->i_inode))
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index c69b7ac..9435dda 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -155,8 +155,8 @@
 	hfs_cat_build_key(sb, (btree_key *)&HFS_I(inode)->cat_key, dir->i_ino, name);
 	inode->i_ino = HFS_SB(sb)->next_id++;
 	inode->i_mode = mode;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 	inode->i_nlink = 1;
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 	HFS_I(inode)->flags = 0;
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index 3c7c763..c8b5acf 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -210,8 +210,8 @@
 	int tmp, token;
 
 	/* initialize the sb with defaults */
-	hsb->s_uid = current->uid;
-	hsb->s_gid = current->gid;
+	hsb->s_uid = current_uid();
+	hsb->s_gid = current_gid();
 	hsb->s_file_umask = 0133;
 	hsb->s_dir_umask = 0022;
 	hsb->s_type = hsb->s_creator = cpu_to_be32(0x3f3f3f3f);	/* == '????' */
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index b207f0e..f105ee9 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -296,8 +296,8 @@
 
 	inode->i_ino = HFSPLUS_SB(sb).next_cnid++;
 	inode->i_mode = mode;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 	inode->i_nlink = 1;
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 	INIT_LIST_HEAD(&HFSPLUS_I(inode).open_dir_list);
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index 9699c56..bab7f8d 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -49,8 +49,8 @@
 	opts->creator = HFSPLUS_DEF_CR_TYPE;
 	opts->type = HFSPLUS_DEF_CR_TYPE;
 	opts->umask = current->fs->umask;
-	opts->uid = current->uid;
-	opts->gid = current->gid;
+	opts->uid = current_uid();
+	opts->gid = current_gid();
 	opts->part = -1;
 	opts->session = -1;
 }
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index 10783f3..b649232 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -92,11 +92,11 @@
 	inc_nlink(dir);
 	insert_inode_hash(result);
 
-	if (result->i_uid != current->fsuid ||
-	    result->i_gid != current->fsgid ||
+	if (result->i_uid != current_fsuid() ||
+	    result->i_gid != current_fsgid() ||
 	    result->i_mode != (mode | S_IFDIR)) {
-		result->i_uid = current->fsuid;
-		result->i_gid = current->fsgid;
+		result->i_uid = current_fsuid();
+		result->i_gid = current_fsgid();
 		result->i_mode = mode | S_IFDIR;
 		hpfs_write_inode_nolock(result);
 	}
@@ -184,11 +184,11 @@
 
 	insert_inode_hash(result);
 
-	if (result->i_uid != current->fsuid ||
-	    result->i_gid != current->fsgid ||
+	if (result->i_uid != current_fsuid() ||
+	    result->i_gid != current_fsgid() ||
 	    result->i_mode != (mode | S_IFREG)) {
-		result->i_uid = current->fsuid;
-		result->i_gid = current->fsgid;
+		result->i_uid = current_fsuid();
+		result->i_gid = current_fsgid();
 		result->i_mode = mode | S_IFREG;
 		hpfs_write_inode_nolock(result);
 	}
@@ -247,8 +247,8 @@
 	result->i_mtime.tv_nsec = 0;
 	result->i_atime.tv_nsec = 0;
 	hpfs_i(result)->i_ea_size = 0;
-	result->i_uid = current->fsuid;
-	result->i_gid = current->fsgid;
+	result->i_uid = current_fsuid();
+	result->i_gid = current_fsgid();
 	result->i_nlink = 1;
 	result->i_size = 0;
 	result->i_blocks = 1;
@@ -325,8 +325,8 @@
 	result->i_atime.tv_nsec = 0;
 	hpfs_i(result)->i_ea_size = 0;
 	result->i_mode = S_IFLNK | 0777;
-	result->i_uid = current->fsuid;
-	result->i_gid = current->fsgid;
+	result->i_uid = current_fsuid();
+	result->i_gid = current_fsgid();
 	result->i_blocks = 1;
 	result->i_nlink = 1;
 	result->i_size = strlen(symlink);
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index 29ad461..0d049b8 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -475,8 +475,8 @@
 
 	init_MUTEX(&sbi->hpfs_creation_de);
 
-	uid = current->uid;
-	gid = current->gid;
+	uid = current_uid();
+	gid = current_gid();
 	umask = current->fs->umask;
 	lowercase = 0;
 	conv = CONV_BINARY;
diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index 2b3d182..b278f7f 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -426,6 +426,7 @@
 
 static int hppfs_open(struct inode *inode, struct file *file)
 {
+	const struct cred *cred = file->f_cred;
 	struct hppfs_private *data;
 	struct vfsmount *proc_mnt;
 	struct dentry *proc_dentry;
@@ -446,7 +447,7 @@
 
 	/* XXX This isn't closed anywhere */
 	data->proc_file = dentry_open(dget(proc_dentry), mntget(proc_mnt),
-				      file_mode(file->f_mode));
+				      file_mode(file->f_mode), cred);
 	err = PTR_ERR(data->proc_file);
 	if (IS_ERR(data->proc_file))
 		goto out_free1;
@@ -489,6 +490,7 @@
 
 static int hppfs_dir_open(struct inode *inode, struct file *file)
 {
+	const struct cred *cred = file->f_cred;
 	struct hppfs_private *data;
 	struct vfsmount *proc_mnt;
 	struct dentry *proc_dentry;
@@ -502,7 +504,7 @@
 	proc_dentry = HPPFS_I(inode)->proc_dentry;
 	proc_mnt = inode->i_sb->s_fs_info;
 	data->proc_file = dentry_open(dget(proc_dentry), mntget(proc_mnt),
-				      file_mode(file->f_mode));
+				      file_mode(file->f_mode), cred);
 	err = PTR_ERR(data->proc_file);
 	if (IS_ERR(data->proc_file))
 		goto out_free;
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 61edc70..7d479ce 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -551,9 +551,9 @@
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else {
-		gid = current->fsgid;
+		gid = current_fsgid();
 	}
-	inode = hugetlbfs_get_inode(dir->i_sb, current->fsuid, gid, mode, dev);
+	inode = hugetlbfs_get_inode(dir->i_sb, current_fsuid(), gid, mode, dev);
 	if (inode) {
 		dir->i_ctime = dir->i_mtime = CURRENT_TIME;
 		d_instantiate(dentry, inode);
@@ -586,9 +586,9 @@
 	if (dir->i_mode & S_ISGID)
 		gid = dir->i_gid;
 	else
-		gid = current->fsgid;
+		gid = current_fsgid();
 
-	inode = hugetlbfs_get_inode(dir->i_sb, current->fsuid,
+	inode = hugetlbfs_get_inode(dir->i_sb, current_fsuid(),
 					gid, S_IFLNK|S_IRWXUGO, 0);
 	if (inode) {
 		int l = strlen(symname)+1;
@@ -854,8 +854,8 @@
 
 	config.nr_blocks = -1; /* No limit on size by default */
 	config.nr_inodes = -1; /* No limit on number of inodes by default */
-	config.uid = current->fsuid;
-	config.gid = current->fsgid;
+	config.uid = current_fsuid();
+	config.gid = current_fsgid();
 	config.mode = 0755;
 	config.hstate = &default_hstate;
 	ret = hugetlbfs_parse_options(data, &config);
@@ -951,6 +951,7 @@
 	struct inode *inode;
 	struct dentry *dentry, *root;
 	struct qstr quick_string;
+	struct user_struct *user = current_user();
 
 	if (!hugetlbfs_vfsmount)
 		return ERR_PTR(-ENOENT);
@@ -958,7 +959,7 @@
 	if (!can_do_hugetlb_shm())
 		return ERR_PTR(-EPERM);
 
-	if (!user_shm_lock(size, current->user))
+	if (!user_shm_lock(size, user))
 		return ERR_PTR(-ENOMEM);
 
 	root = hugetlbfs_vfsmount->mnt_root;
@@ -970,8 +971,8 @@
 		goto out_shm_unlock;
 
 	error = -ENOSPC;
-	inode = hugetlbfs_get_inode(root->d_sb, current->fsuid,
-				current->fsgid, S_IFREG | S_IRWXUGO, 0);
+	inode = hugetlbfs_get_inode(root->d_sb, current_fsuid(),
+				current_fsgid(), S_IFREG | S_IRWXUGO, 0);
 	if (!inode)
 		goto out_dentry;
 
@@ -998,7 +999,7 @@
 out_dentry:
 	dput(dentry);
 out_shm_unlock:
-	user_shm_unlock(size, current->user);
+	user_shm_unlock(size, user);
 	return ERR_PTR(error);
 }
 
diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index d367e9b..e2425bb 100644
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -601,7 +601,7 @@
 		goto out_put_fd;
 	}
 
-	user = get_uid(current->user);
+	user = get_current_user();
 	if (unlikely(atomic_read(&user->inotify_devs) >=
 			inotify_max_user_instances)) {
 		ret = -EMFILE;
diff --git a/fs/internal.h b/fs/internal.h
index 80aa9a0..53af885 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -10,6 +10,7 @@
  */
 
 struct super_block;
+struct linux_binprm;
 
 /*
  * block_dev.c
@@ -40,6 +41,11 @@
 extern void __init chrdev_init(void);
 
 /*
+ * exec.c
+ */
+extern void check_unsafe_exec(struct linux_binprm *);
+
+/*
  * namespace.c
  */
 extern int copy_mount_options(const void __user *, unsigned long *);
diff --git a/fs/ioprio.c b/fs/ioprio.c
index da3cc46..3569e0a 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -31,10 +31,16 @@
 {
 	int err;
 	struct io_context *ioc;
+	const struct cred *cred = current_cred(), *tcred;
 
-	if (task->uid != current->euid &&
-	    task->uid != current->uid && !capable(CAP_SYS_NICE))
+	rcu_read_lock();
+	tcred = __task_cred(task);
+	if (tcred->uid != cred->euid &&
+	    tcred->uid != cred->uid && !capable(CAP_SYS_NICE)) {
+		rcu_read_unlock();
 		return -EPERM;
+	}
+	rcu_read_unlock();
 
 	err = security_task_setioprio(task, ioprio);
 	if (err)
@@ -123,7 +129,7 @@
 			break;
 		case IOPRIO_WHO_USER:
 			if (!who)
-				user = current->user;
+				user = current_user();
 			else
 				user = find_user(who);
 
@@ -131,7 +137,7 @@
 				break;
 
 			do_each_thread(g, p) {
-				if (p->uid != who)
+				if (__task_cred(p)->uid != who)
 					continue;
 				ret = set_task_ioprio(p, ioprio);
 				if (ret)
@@ -216,7 +222,7 @@
 			break;
 		case IOPRIO_WHO_USER:
 			if (!who)
-				user = current->user;
+				user = current_user();
 			else
 				user = find_user(who);
 
@@ -224,7 +230,7 @@
 				break;
 
 			do_each_thread(g, p) {
-				if (p->uid != user->uid)
+				if (__task_cred(p)->uid != user->uid)
 					continue;
 				tmpio = get_task_ioprio(p);
 				if (tmpio < 0)
diff --git a/fs/jfs/jfs_inode.c b/fs/jfs/jfs_inode.c
index ed6574b..70022fd 100644
--- a/fs/jfs/jfs_inode.c
+++ b/fs/jfs/jfs_inode.c
@@ -93,13 +93,13 @@
 		return ERR_PTR(rc);
 	}
 
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	if (parent->i_mode & S_ISGID) {
 		inode->i_gid = parent->i_gid;
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 
 	/*
 	 * New inodes need to save sane values on disk when
diff --git a/fs/locks.c b/fs/locks.c
index 09062e3..46a2e12 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1349,7 +1349,7 @@
 	struct inode *inode = dentry->d_inode;
 	int error, rdlease_count = 0, wrlease_count = 0;
 
-	if ((current->fsuid != inode->i_uid) && !capable(CAP_LEASE))
+	if ((current_fsuid() != inode->i_uid) && !capable(CAP_LEASE))
 		return -EACCES;
 	if (!S_ISREG(inode->i_mode))
 		return -EINVAL;
diff --git a/fs/minix/bitmap.c b/fs/minix/bitmap.c
index 703cc35..3aebe32 100644
--- a/fs/minix/bitmap.c
+++ b/fs/minix/bitmap.c
@@ -262,8 +262,8 @@
 		iput(inode);
 		return NULL;
 	}
-	inode->i_uid = current->fsuid;
-	inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current_fsgid();
 	inode->i_ino = j;
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 	inode->i_blocks = 0;
diff --git a/fs/namei.c b/fs/namei.c
index d34e0f9..af3783f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -186,7 +186,7 @@
 
 	mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
 
-	if (current->fsuid == inode->i_uid)
+	if (current_fsuid() == inode->i_uid)
 		mode >>= 6;
 	else {
 		if (IS_POSIXACL(inode) && (mode & S_IRWXG) && check_acl) {
@@ -441,7 +441,7 @@
 	if (inode->i_op && inode->i_op->permission)
 		return -EAGAIN;
 
-	if (current->fsuid == inode->i_uid)
+	if (current_fsuid() == inode->i_uid)
 		mode >>= 6;
 	else if (in_group_p(inode->i_gid))
 		mode >>= 3;
@@ -1334,11 +1334,13 @@
  */
 static inline int check_sticky(struct inode *dir, struct inode *inode)
 {
+	uid_t fsuid = current_fsuid();
+
 	if (!(dir->i_mode & S_ISVTX))
 		return 0;
-	if (inode->i_uid == current->fsuid)
+	if (inode->i_uid == fsuid)
 		return 0;
-	if (dir->i_uid == current->fsuid)
+	if (dir->i_uid == fsuid)
 		return 0;
 	return !capable(CAP_FOWNER);
 }
diff --git a/fs/namespace.c b/fs/namespace.c
index 65b3dc8..1c09cab 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1176,7 +1176,7 @@
 	if (S_ISLNK(path->dentry->d_inode->i_mode))
 		return -EPERM;
 	if (path->dentry->d_inode->i_mode & S_ISVTX) {
-		if (current->uid != path->dentry->d_inode->i_uid)
+		if (current_uid() != path->dentry->d_inode->i_uid)
 			return -EPERM;
 	}
 	if (inode_permission(path->dentry->d_inode, MAY_WRITE))
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index 3a97c95..6d04e05 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -40,10 +40,10 @@
 	struct inode *inode = file->f_path.dentry->d_inode;
 	struct ncp_fs_info info;
 
-	if ((file_permission(file, MAY_WRITE) != 0)
-	    && (current->uid != server->m.mounted_uid)) {
+	if (file_permission(file, MAY_WRITE) != 0
+	    && current_uid() != server->m.mounted_uid)
 		return -EACCES;
-	}
+
 	if (copy_from_user(&info, arg, sizeof(info)))
 		return -EFAULT;
 
@@ -70,10 +70,10 @@
 	struct inode *inode = file->f_path.dentry->d_inode;
 	struct ncp_fs_info_v2 info2;
 
-	if ((file_permission(file, MAY_WRITE) != 0)
-	    && (current->uid != server->m.mounted_uid)) {
+	if (file_permission(file, MAY_WRITE) != 0
+	    && current_uid() != server->m.mounted_uid)
 		return -EACCES;
-	}
+
 	if (copy_from_user(&info2, arg, sizeof(info2)))
 		return -EFAULT;
 
@@ -141,10 +141,10 @@
 	struct inode *inode = file->f_path.dentry->d_inode;
 	struct compat_ncp_fs_info_v2 info2;
 
-	if ((file_permission(file, MAY_WRITE) != 0)
-	    && (current->uid != server->m.mounted_uid)) {
+	if (file_permission(file, MAY_WRITE) != 0
+	    && current_uid() != server->m.mounted_uid)
 		return -EACCES;
-	}
+
 	if (copy_from_user(&info2, arg, sizeof(info2)))
 		return -EFAULT;
 
@@ -270,16 +270,17 @@
 	struct ncp_ioctl_request request;
 	char* bouncebuffer;
 	void __user *argp = (void __user *)arg;
+	uid_t uid = current_uid();
 
 	switch (cmd) {
 #ifdef CONFIG_COMPAT
 	case NCP_IOC_NCPREQUEST_32:
 #endif
 	case NCP_IOC_NCPREQUEST:
-		if ((file_permission(filp, MAY_WRITE) != 0)
-		    && (current->uid != server->m.mounted_uid)) {
+		if (file_permission(filp, MAY_WRITE) != 0
+		    && uid != server->m.mounted_uid)
 			return -EACCES;
-		}
+
 #ifdef CONFIG_COMPAT
 		if (cmd == NCP_IOC_NCPREQUEST_32) {
 			struct compat_ncp_ioctl_request request32;
@@ -356,10 +357,10 @@
 	case NCP_IOC_GETMOUNTUID16:
 	case NCP_IOC_GETMOUNTUID32:
 	case NCP_IOC_GETMOUNTUID64:
-		if ((file_permission(filp, MAY_READ) != 0)
-			&& (current->uid != server->m.mounted_uid)) {
+		if (file_permission(filp, MAY_READ) != 0
+			&& uid != server->m.mounted_uid)
 			return -EACCES;
-		}
+
 		if (cmd == NCP_IOC_GETMOUNTUID16) {
 			u16 uid;
 			SET_UID(uid, server->m.mounted_uid);
@@ -380,11 +381,10 @@
 		{
 			struct ncp_setroot_ioctl sr;
 
-			if ((file_permission(filp, MAY_READ) != 0)
-			    && (current->uid != server->m.mounted_uid))
-			{
+			if (file_permission(filp, MAY_READ) != 0
+			    && uid != server->m.mounted_uid)
 				return -EACCES;
-			}
+
 			if (server->m.mounted_vol[0]) {
 				struct dentry* dentry = inode->i_sb->s_root;
 
@@ -408,6 +408,7 @@
 				return -EFAULT;
 			return 0;
 		}
+
 	case NCP_IOC_SETROOT:
 		{
 			struct ncp_setroot_ioctl sr;
@@ -455,11 +456,10 @@
 
 #ifdef CONFIG_NCPFS_PACKET_SIGNING	
 	case NCP_IOC_SIGN_INIT:
-		if ((file_permission(filp, MAY_WRITE) != 0)
-		    && (current->uid != server->m.mounted_uid))
-		{
+		if (file_permission(filp, MAY_WRITE) != 0
+		    && uid != server->m.mounted_uid)
 			return -EACCES;
-		}
+
 		if (argp) {
 			if (server->sign_wanted)
 			{
@@ -478,24 +478,22 @@
 		return 0;		
 		
         case NCP_IOC_SIGN_WANTED:
-		if ((file_permission(filp, MAY_READ) != 0)
-		    && (current->uid != server->m.mounted_uid))
-		{
+		if (file_permission(filp, MAY_READ) != 0
+		    && uid != server->m.mounted_uid)
 			return -EACCES;
-		}
 		
                 if (put_user(server->sign_wanted, (int __user *)argp))
 			return -EFAULT;
                 return 0;
+
 	case NCP_IOC_SET_SIGN_WANTED:
 		{
 			int newstate;
 
-			if ((file_permission(filp, MAY_WRITE) != 0)
-			    && (current->uid != server->m.mounted_uid))
-			{
+			if (file_permission(filp, MAY_WRITE) != 0
+			    && uid != server->m.mounted_uid)
 				return -EACCES;
-			}
+
 			/* get only low 8 bits... */
 			if (get_user(newstate, (unsigned char __user *)argp))
 				return -EFAULT;
@@ -512,11 +510,10 @@
 
 #ifdef CONFIG_NCPFS_IOCTL_LOCKING
 	case NCP_IOC_LOCKUNLOCK:
-		if ((file_permission(filp, MAY_WRITE) != 0)
-		    && (current->uid != server->m.mounted_uid))
-		{
+		if (file_permission(filp, MAY_WRITE) != 0
+		    && uid != server->m.mounted_uid)
 			return -EACCES;
-		}
+
 		{
 			struct ncp_lock_ioctl	 rqdata;
 
@@ -585,9 +582,8 @@
 
 #ifdef CONFIG_COMPAT
 	case NCP_IOC_GETOBJECTNAME_32:
-		if (current->uid != server->m.mounted_uid) {
+		if (uid != server->m.mounted_uid)
 			return -EACCES;
-		}
 		{
 			struct compat_ncp_objectname_ioctl user;
 			size_t outl;
@@ -609,10 +605,10 @@
 			return 0;
 		}
 #endif
+
 	case NCP_IOC_GETOBJECTNAME:
-		if (current->uid != server->m.mounted_uid) {
+		if (uid != server->m.mounted_uid)
 			return -EACCES;
-		}
 		{
 			struct ncp_objectname_ioctl user;
 			size_t outl;
@@ -633,13 +629,13 @@
 				return -EFAULT;
 			return 0;
 		}
+
 #ifdef CONFIG_COMPAT
 	case NCP_IOC_SETOBJECTNAME_32:
 #endif
 	case NCP_IOC_SETOBJECTNAME:
-		if (current->uid != server->m.mounted_uid) {
+		if (uid != server->m.mounted_uid)
 			return -EACCES;
-		}
 		{
 			struct ncp_objectname_ioctl user;
 			void* newname;
@@ -691,13 +687,13 @@
 			kfree(oldname);
 			return 0;
 		}
+
 #ifdef CONFIG_COMPAT
 	case NCP_IOC_GETPRIVATEDATA_32:
 #endif
 	case NCP_IOC_GETPRIVATEDATA:
-		if (current->uid != server->m.mounted_uid) {
+		if (uid != server->m.mounted_uid)
 			return -EACCES;
-		}
 		{
 			struct ncp_privatedata_ioctl user;
 			size_t outl;
@@ -736,13 +732,13 @@
 
 			return 0;
 		}
+
 #ifdef CONFIG_COMPAT
 	case NCP_IOC_SETPRIVATEDATA_32:
 #endif
 	case NCP_IOC_SETPRIVATEDATA:
-		if (current->uid != server->m.mounted_uid) {
+		if (uid != server->m.mounted_uid)
 			return -EACCES;
-		}
 		{
 			struct ncp_privatedata_ioctl user;
 			void* new;
@@ -794,9 +790,10 @@
 #endif /* CONFIG_NCPFS_NLS */
 
 	case NCP_IOC_SETDENTRYTTL:
-		if ((file_permission(filp, MAY_WRITE) != 0) &&
-				 (current->uid != server->m.mounted_uid))
+		if (file_permission(filp, MAY_WRITE) != 0 &&
+		    uid != server->m.mounted_uid)
 			return -EACCES;
+
 		{
 			u_int32_t user;
 
diff --git a/fs/nfsctl.c b/fs/nfsctl.c
index aed8145..b1acbd6 100644
--- a/fs/nfsctl.c
+++ b/fs/nfsctl.c
@@ -10,6 +10,8 @@
 #include <linux/sunrpc/svc.h>
 #include <linux/nfsd/nfsd.h>
 #include <linux/nfsd/syscall.h>
+#include <linux/cred.h>
+#include <linux/sched.h>
 #include <linux/linkage.h>
 #include <linux/namei.h>
 #include <linux/mount.h>
@@ -41,7 +43,8 @@
 		error = may_open(&nd, MAY_WRITE, FMODE_WRITE);
 
 	if (!error)
-		return dentry_open(nd.path.dentry, nd.path.mnt, flags);
+		return dentry_open(nd.path.dentry, nd.path.mnt, flags,
+				   current_cred());
 
 	path_put(&nd.path);
 	return ERR_PTR(error);
diff --git a/fs/nfsd/auth.c b/fs/nfsd/auth.c
index 294992e..0184fe9 100644
--- a/fs/nfsd/auth.c
+++ b/fs/nfsd/auth.c
@@ -27,53 +27,70 @@
 
 int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
 {
-	struct svc_cred	cred = rqstp->rq_cred;
+	struct group_info *rqgi;
+	struct group_info *gi;
+	struct cred *new;
 	int i;
 	int flags = nfsexp_flags(rqstp, exp);
 	int ret;
 
-	if (flags & NFSEXP_ALLSQUASH) {
-		cred.cr_uid = exp->ex_anon_uid;
-		cred.cr_gid = exp->ex_anon_gid;
-		cred.cr_group_info = groups_alloc(0);
-	} else if (flags & NFSEXP_ROOTSQUASH) {
-		struct group_info *gi;
-		if (!cred.cr_uid)
-			cred.cr_uid = exp->ex_anon_uid;
-		if (!cred.cr_gid)
-			cred.cr_gid = exp->ex_anon_gid;
-		gi = groups_alloc(cred.cr_group_info->ngroups);
-		if (gi)
-			for (i = 0; i < cred.cr_group_info->ngroups; i++) {
-				if (!GROUP_AT(cred.cr_group_info, i))
-					GROUP_AT(gi, i) = exp->ex_anon_gid;
-				else
-					GROUP_AT(gi, i) = GROUP_AT(cred.cr_group_info, i);
-			}
-		cred.cr_group_info = gi;
-	} else
-		get_group_info(cred.cr_group_info);
-
-	if (cred.cr_uid != (uid_t) -1)
-		current->fsuid = cred.cr_uid;
-	else
-		current->fsuid = exp->ex_anon_uid;
-	if (cred.cr_gid != (gid_t) -1)
-		current->fsgid = cred.cr_gid;
-	else
-		current->fsgid = exp->ex_anon_gid;
-
-	if (!cred.cr_group_info)
+	/* discard any old override before preparing the new set */
+	revert_creds(get_cred(current->real_cred));
+	new = prepare_creds();
+	if (!new)
 		return -ENOMEM;
-	ret = set_current_groups(cred.cr_group_info);
-	put_group_info(cred.cr_group_info);
-	if ((cred.cr_uid)) {
-		current->cap_effective =
-			cap_drop_nfsd_set(current->cap_effective);
+
+	new->fsuid = rqstp->rq_cred.cr_uid;
+	new->fsgid = rqstp->rq_cred.cr_gid;
+
+	rqgi = rqstp->rq_cred.cr_group_info;
+
+	if (flags & NFSEXP_ALLSQUASH) {
+		new->fsuid = exp->ex_anon_uid;
+		new->fsgid = exp->ex_anon_gid;
+		gi = groups_alloc(0);
+	} else if (flags & NFSEXP_ROOTSQUASH) {
+		if (!new->fsuid)
+			new->fsuid = exp->ex_anon_uid;
+		if (!new->fsgid)
+			new->fsgid = exp->ex_anon_gid;
+
+		gi = groups_alloc(rqgi->ngroups);
+		if (!gi)
+			goto oom;
+
+		for (i = 0; i < rqgi->ngroups; i++) {
+			if (!GROUP_AT(rqgi, i))
+				GROUP_AT(gi, i) = exp->ex_anon_gid;
+			else
+				GROUP_AT(gi, i) = GROUP_AT(rqgi, i);
+		}
 	} else {
-		current->cap_effective =
-			cap_raise_nfsd_set(current->cap_effective,
-					   current->cap_permitted);
+		gi = get_group_info(rqgi);
 	}
+
+	if (new->fsuid == (uid_t) -1)
+		new->fsuid = exp->ex_anon_uid;
+	if (new->fsgid == (gid_t) -1)
+		new->fsgid = exp->ex_anon_gid;
+
+	ret = set_groups(new, gi);
+	put_group_info(gi);
+	if (!ret)
+		goto error;
+
+	if (new->uid)
+		new->cap_effective = cap_drop_nfsd_set(new->cap_effective);
+	else
+		new->cap_effective = cap_raise_nfsd_set(new->cap_effective,
+							new->cap_permitted);
+	put_cred(override_creds(new));
+	return 0;
+
+oom:
+	ret = -ENOMEM;
+error:
+	abort_creds(new);
 	return ret;
 }
+
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index b79ec93..0f9d6ef 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -54,20 +54,26 @@
 static struct path rec_dir;
 static int rec_dir_init = 0;
 
-static void
-nfs4_save_user(uid_t *saveuid, gid_t *savegid)
+static int
+nfs4_save_creds(const struct cred **original_creds)
 {
-	*saveuid = current->fsuid;
-	*savegid = current->fsgid;
-	current->fsuid = 0;
-	current->fsgid = 0;
+	struct cred *new;
+
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+
+	new->fsuid = 0;
+	new->fsgid = 0;
+	*original_creds = override_creds(new);
+	put_cred(new);
+	return 0;
 }
 
 static void
-nfs4_reset_user(uid_t saveuid, gid_t savegid)
+nfs4_reset_creds(const struct cred *original)
 {
-	current->fsuid = saveuid;
-	current->fsgid = savegid;
+	revert_creds(original);
 }
 
 static void
@@ -129,10 +135,9 @@
 int
 nfsd4_create_clid_dir(struct nfs4_client *clp)
 {
+	const struct cred *original_cred;
 	char *dname = clp->cl_recdir;
 	struct dentry *dentry;
-	uid_t uid;
-	gid_t gid;
 	int status;
 
 	dprintk("NFSD: nfsd4_create_clid_dir for \"%s\"\n", dname);
@@ -140,7 +145,9 @@
 	if (!rec_dir_init || clp->cl_firststate)
 		return 0;
 
-	nfs4_save_user(&uid, &gid);
+	status = nfs4_save_creds(&original_cred);
+	if (status < 0)
+		return status;
 
 	/* lock the parent */
 	mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
@@ -168,7 +175,7 @@
 		clp->cl_firststate = 1;
 		nfsd4_sync_rec_dir();
 	}
-	nfs4_reset_user(uid, gid);
+	nfs4_reset_creds(original_cred);
 	dprintk("NFSD: nfsd4_create_clid_dir returns %d\n", status);
 	return status;
 }
@@ -211,26 +218,29 @@
 static int
 nfsd4_list_rec_dir(struct dentry *dir, recdir_func *f)
 {
+	const struct cred *original_cred;
 	struct file *filp;
 	struct dentry_list_arg dla = {
 		.parent = dir,
 	};
 	struct list_head *dentries = &dla.dentries;
 	struct dentry_list *child;
-	uid_t uid;
-	gid_t gid;
 	int status;
 
 	if (!rec_dir_init)
 		return 0;
 
-	nfs4_save_user(&uid, &gid);
+	status = nfs4_save_creds(&original_cred);
+	if (status < 0)
+		return status;
 	INIT_LIST_HEAD(dentries);
 
-	filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY);
+	filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY,
+			   current_cred());
 	status = PTR_ERR(filp);
 	if (IS_ERR(filp))
 		goto out;
+	INIT_LIST_HEAD(dentries);
 	status = vfs_readdir(filp, nfsd4_build_dentrylist, &dla);
 	fput(filp);
 	while (!list_empty(dentries)) {
@@ -249,7 +259,7 @@
 		dput(child->dentry);
 		kfree(child);
 	}
-	nfs4_reset_user(uid, gid);
+	nfs4_reset_creds(original_cred);
 	return status;
 }
 
@@ -311,8 +321,7 @@
 void
 nfsd4_remove_clid_dir(struct nfs4_client *clp)
 {
-	uid_t uid;
-	gid_t gid;
+	const struct cred *original_cred;
 	int status;
 
 	if (!rec_dir_init || !clp->cl_firststate)
@@ -322,9 +331,13 @@
 	if (status)
 		goto out;
 	clp->cl_firststate = 0;
-	nfs4_save_user(&uid, &gid);
+
+	status = nfs4_save_creds(&original_cred);
+	if (status < 0)
+		goto out;
+
 	status = nfsd4_unlink_clid_dir(clp->cl_recdir, HEXDIR_LEN-1);
-	nfs4_reset_user(uid, gid);
+	nfs4_reset_creds(original_cred);
 	if (status == 0)
 		nfsd4_sync_rec_dir();
 	mnt_drop_write(rec_dir.mnt);
@@ -401,16 +414,21 @@
 void
 nfsd4_init_recdir(char *rec_dirname)
 {
-	uid_t			uid = 0;
-	gid_t			gid = 0;
-	int 			status;
+	const struct cred *original_cred;
+	int status;
 
 	printk("NFSD: Using %s as the NFSv4 state recovery directory\n",
 			rec_dirname);
 
 	BUG_ON(rec_dir_init);
 
-	nfs4_save_user(&uid, &gid);
+	status = nfs4_save_creds(&original_cred);
+	if (status < 0) {
+		printk("NFSD: Unable to change credentials to find recovery"
+		       " directory: error %d\n",
+		       status);
+		return;
+	}
 
 	status = kern_path(rec_dirname, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
 			&rec_dir);
@@ -420,7 +438,7 @@
 
 	if (!status)
 		rec_dir_init = 1;
-	nfs4_reset_user(uid, gid);
+	nfs4_reset_creds(original_cred);
 }
 
 void
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index cd25d91..f0da7d9 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -186,9 +186,14 @@
 		 * access control settings being in effect, we cannot
 		 * fix that case easily.
 		 */
-		current->cap_effective =
-			cap_raise_nfsd_set(current->cap_effective,
-					   current->cap_permitted);
+		struct cred *new = prepare_creds();
+		if (!new)
+			return nfserrno(-ENOMEM);
+		new->cap_effective =
+			cap_raise_nfsd_set(new->cap_effective,
+					   new->cap_permitted);
+		put_cred(override_creds(new));
+		put_cred(new);
 	} else {
 		error = nfsd_setuser_and_check_port(rqstp, exp);
 		if (error)
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 4433c8f..d1c5f78 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -671,6 +671,7 @@
 nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
 			int access, struct file **filp)
 {
+	const struct cred *cred = current_cred();
 	struct dentry	*dentry;
 	struct inode	*inode;
 	int		flags = O_RDONLY|O_LARGEFILE;
@@ -725,7 +726,7 @@
 		DQUOT_INIT(inode);
 	}
 	*filp = dentry_open(dget(dentry), mntget(fhp->fh_export->ex_path.mnt),
-				flags);
+			    flags, cred);
 	if (IS_ERR(*filp))
 		host_err = PTR_ERR(*filp);
 out_nfserr:
@@ -1169,7 +1170,7 @@
 	 * send along the gid on create when it tries to implement
 	 * setgid directories via NFS:
 	 */
-	if (current->fsuid != 0)
+	if (current_fsuid() != 0)
 		iap->ia_valid &= ~(ATTR_UID|ATTR_GID);
 	if (iap->ia_valid)
 		return nfsd_setattr(rqstp, resfhp, iap, 0, (time_t)0);
@@ -2001,7 +2002,7 @@
 		IS_APPEND(inode)?	" append" : "",
 		__mnt_is_readonly(exp->ex_path.mnt)?	" ro" : "");
 	dprintk("      owner %d/%d user %d/%d\n",
-		inode->i_uid, inode->i_gid, current->fsuid, current->fsgid);
+		inode->i_uid, inode->i_gid, current_fsuid(), current_fsgid());
 #endif
 
 	/* Normally we reject any write/sattr etc access on a read-only file
@@ -2044,7 +2045,7 @@
 	 * with NFSv3.
 	 */
 	if ((acc & NFSD_MAY_OWNER_OVERRIDE) &&
-	    inode->i_uid == current->fsuid)
+	    inode->i_uid == current_fsuid())
 		return 0;
 
 	/* This assumes  NFSD_MAY_{READ,WRITE,EXEC} == MAY_{READ,WRITE,EXEC} */
diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c
index ba962d7..6f7a77d 100644
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlm/dlmfs.c
@@ -339,8 +339,8 @@
 		ip = DLMFS_I(inode);
 
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_blocks = 0;
 		inode->i_mapping->backing_dev_info = &dlmfs_backing_dev_info;
 		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
@@ -365,8 +365,8 @@
 		return NULL;
 
 	inode->i_mode = mode;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 	inode->i_blocks = 0;
 	inode->i_mapping->backing_dev_info = &dlmfs_backing_dev_info;
 	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index f4967e6..2545e74 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -421,13 +421,13 @@
 	fe->i_blkno = cpu_to_le64(fe_blkno);
 	fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
 	fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
-	fe->i_uid = cpu_to_le32(current->fsuid);
+	fe->i_uid = cpu_to_le32(current_fsuid());
 	if (dir->i_mode & S_ISGID) {
 		fe->i_gid = cpu_to_le32(dir->i_gid);
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else
-		fe->i_gid = cpu_to_le32(current->fsgid);
+		fe->i_gid = cpu_to_le32(current_fsgid());
 	fe->i_mode = cpu_to_le16(mode);
 	if (S_ISCHR(mode) || S_ISBLK(mode))
 		fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
index cbf047a..6afe57c 100644
--- a/fs/omfs/inode.c
+++ b/fs/omfs/inode.c
@@ -37,8 +37,8 @@
 
 	inode->i_ino = new_block;
 	inode->i_mode = mode;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 	inode->i_blocks = 0;
 	inode->i_mapping->a_ops = &omfs_aops;
 
@@ -420,8 +420,8 @@
 
 	sb->s_fs_info = sbi;
 
-	sbi->s_uid = current->uid;
-	sbi->s_gid = current->gid;
+	sbi->s_uid = current_uid();
+	sbi->s_gid = current_gid();
 	sbi->s_dmask = sbi->s_fmask = current->fs->umask;
 
 	if (!parse_options((char *) data, sbi))
diff --git a/fs/open.c b/fs/open.c
index 83cdb9d..c0a426d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -425,39 +425,33 @@
  */
 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
 {
+	const struct cred *old_cred;
+	struct cred *override_cred;
 	struct path path;
 	struct inode *inode;
-	int old_fsuid, old_fsgid;
-	kernel_cap_t uninitialized_var(old_cap);  /* !SECURE_NO_SETUID_FIXUP */
 	int res;
 
 	if (mode & ~S_IRWXO)	/* where's F_OK, X_OK, W_OK, R_OK? */
 		return -EINVAL;
 
-	old_fsuid = current->fsuid;
-	old_fsgid = current->fsgid;
+	override_cred = prepare_creds();
+	if (!override_cred)
+		return -ENOMEM;
 
-	current->fsuid = current->uid;
-	current->fsgid = current->gid;
+	override_cred->fsuid = override_cred->uid;
+	override_cred->fsgid = override_cred->gid;
 
 	if (!issecure(SECURE_NO_SETUID_FIXUP)) {
-		/*
-		 * Clear the capabilities if we switch to a non-root user
-		 */
-#ifndef CONFIG_SECURITY_FILE_CAPABILITIES
-		/*
-		 * FIXME: There is a race here against sys_capset.  The
-		 * capabilities can change yet we will restore the old
-		 * value below.  We should hold task_capabilities_lock,
-		 * but we cannot because user_path_at can sleep.
-		 */
-#endif /* ndef CONFIG_SECURITY_FILE_CAPABILITIES */
-		if (current->uid)
-			old_cap = cap_set_effective(__cap_empty_set);
+		/* Clear the capabilities if we switch to a non-root user */
+		if (override_cred->uid)
+			cap_clear(override_cred->cap_effective);
 		else
-			old_cap = cap_set_effective(current->cap_permitted);
+			override_cred->cap_effective =
+				override_cred->cap_permitted;
 	}
 
+	old_cred = override_creds(override_cred);
+
 	res = user_path_at(dfd, filename, LOOKUP_FOLLOW, &path);
 	if (res)
 		goto out;
@@ -494,12 +488,8 @@
 out_path_release:
 	path_put(&path);
 out:
-	current->fsuid = old_fsuid;
-	current->fsgid = old_fsgid;
-
-	if (!issecure(SECURE_NO_SETUID_FIXUP))
-		cap_set_effective(old_cap);
-
+	revert_creds(old_cred);
+	put_cred(override_cred);
 	return res;
 }
 
@@ -792,7 +782,8 @@
 
 static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
 					int flags, struct file *f,
-					int (*open)(struct inode *, struct file *))
+					int (*open)(struct inode *, struct file *),
+					const struct cred *cred)
 {
 	struct inode *inode;
 	int error;
@@ -816,7 +807,7 @@
 	f->f_op = fops_get(inode->i_fop);
 	file_move(f, &inode->i_sb->s_files);
 
-	error = security_dentry_open(f);
+	error = security_dentry_open(f, cred);
 	if (error)
 		goto cleanup_all;
 
@@ -891,6 +882,8 @@
 struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry *dentry,
 		int (*open)(struct inode *, struct file *))
 {
+	const struct cred *cred = current_cred();
+
 	if (IS_ERR(nd->intent.open.file))
 		goto out;
 	if (IS_ERR(dentry))
@@ -898,7 +891,7 @@
 	nd->intent.open.file = __dentry_open(dget(dentry), mntget(nd->path.mnt),
 					     nd->intent.open.flags - 1,
 					     nd->intent.open.file,
-					     open);
+					     open, cred);
 out:
 	return nd->intent.open.file;
 out_err:
@@ -917,6 +910,7 @@
  */
 struct file *nameidata_to_filp(struct nameidata *nd, int flags)
 {
+	const struct cred *cred = current_cred();
 	struct file *filp;
 
 	/* Pick up the filp from the open intent */
@@ -924,7 +918,7 @@
 	/* Has the filesystem initialised the file for us? */
 	if (filp->f_path.dentry == NULL)
 		filp = __dentry_open(nd->path.dentry, nd->path.mnt, flags, filp,
-				     NULL);
+				     NULL, cred);
 	else
 		path_put(&nd->path);
 	return filp;
@@ -934,7 +928,8 @@
  * dentry_open() will have done dput(dentry) and mntput(mnt) if it returns an
  * error.
  */
-struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
+struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags,
+			 const struct cred *cred)
 {
 	int error;
 	struct file *f;
@@ -959,7 +954,7 @@
 		return ERR_PTR(error);
 	}
 
-	return __dentry_open(dentry, mnt, flags, f, NULL);
+	return __dentry_open(dentry, mnt, flags, f, NULL, cred);
 }
 EXPORT_SYMBOL(dentry_open);
 
diff --git a/fs/pipe.c b/fs/pipe.c
index 7aea8b8..aaf797b 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -899,8 +899,8 @@
 	 */
 	inode->i_state = I_DIRTY;
 	inode->i_mode = S_IFIFO | S_IRUSR | S_IWUSR;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 
 	return inode;
diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index aec931e..39df95a 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -217,11 +217,11 @@
                 switch(pa->e_tag) {
                         case ACL_USER_OBJ:
 				/* (May have been checked already) */
-                                if (inode->i_uid == current->fsuid)
+				if (inode->i_uid == current_fsuid())
                                         goto check_perm;
                                 break;
                         case ACL_USER:
-                                if (pa->e_id == current->fsuid)
+				if (pa->e_id == current_fsuid())
                                         goto mask;
 				break;
                         case ACL_GROUP_OBJ:
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 6af7fba..7e4877d 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -159,6 +159,7 @@
 	struct group_info *group_info;
 	int g;
 	struct fdtable *fdt = NULL;
+	const struct cred *cred;
 	pid_t ppid, tpid;
 
 	rcu_read_lock();
@@ -170,6 +171,7 @@
 		if (tracer)
 			tpid = task_pid_nr_ns(tracer, ns);
 	}
+	cred = get_cred((struct cred *) __task_cred(p));
 	seq_printf(m,
 		"State:\t%s\n"
 		"Tgid:\t%d\n"
@@ -182,8 +184,8 @@
 		task_tgid_nr_ns(p, ns),
 		pid_nr_ns(pid, ns),
 		ppid, tpid,
-		p->uid, p->euid, p->suid, p->fsuid,
-		p->gid, p->egid, p->sgid, p->fsgid);
+		cred->uid, cred->euid, cred->suid, cred->fsuid,
+		cred->gid, cred->egid, cred->sgid, cred->fsgid);
 
 	task_lock(p);
 	if (p->files)
@@ -194,13 +196,12 @@
 		fdt ? fdt->max_fds : 0);
 	rcu_read_unlock();
 
-	group_info = p->group_info;
-	get_group_info(group_info);
+	group_info = cred->group_info;
 	task_unlock(p);
 
 	for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++)
 		seq_printf(m, "%d ", GROUP_AT(group_info, g));
-	put_group_info(group_info);
+	put_cred(cred);
 
 	seq_printf(m, "\n");
 }
@@ -262,7 +263,7 @@
 		blocked = p->blocked;
 		collect_sigign_sigcatch(p, &ignored, &caught);
 		num_threads = atomic_read(&p->signal->count);
-		qsize = atomic_read(&p->user->sigpending);
+		qsize = atomic_read(&__task_cred(p)->user->sigpending);
 		qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
 		unlock_task_sighand(p, &flags);
 	}
@@ -293,10 +294,21 @@
 
 static inline void task_cap(struct seq_file *m, struct task_struct *p)
 {
-	render_cap_t(m, "CapInh:\t", &p->cap_inheritable);
-	render_cap_t(m, "CapPrm:\t", &p->cap_permitted);
-	render_cap_t(m, "CapEff:\t", &p->cap_effective);
-	render_cap_t(m, "CapBnd:\t", &p->cap_bset);
+	const struct cred *cred;
+	kernel_cap_t cap_inheritable, cap_permitted, cap_effective, cap_bset;
+
+	rcu_read_lock();
+	cred = __task_cred(p);
+	cap_inheritable	= cred->cap_inheritable;
+	cap_permitted	= cred->cap_permitted;
+	cap_effective	= cred->cap_effective;
+	cap_bset	= cred->cap_bset;
+	rcu_read_unlock();
+
+	render_cap_t(m, "CapInh:\t", &cap_inheritable);
+	render_cap_t(m, "CapPrm:\t", &cap_permitted);
+	render_cap_t(m, "CapEff:\t", &cap_effective);
+	render_cap_t(m, "CapBnd:\t", &cap_bset);
 }
 
 static inline void task_context_switch_counts(struct seq_file *m,
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 486cf3f..cf42c42 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1406,6 +1406,7 @@
 {
 	struct inode * inode;
 	struct proc_inode *ei;
+	const struct cred *cred;
 
 	/* We need a new inode */
 
@@ -1428,8 +1429,11 @@
 	inode->i_uid = 0;
 	inode->i_gid = 0;
 	if (task_dumpable(task)) {
-		inode->i_uid = task->euid;
-		inode->i_gid = task->egid;
+		rcu_read_lock();
+		cred = __task_cred(task);
+		inode->i_uid = cred->euid;
+		inode->i_gid = cred->egid;
+		rcu_read_unlock();
 	}
 	security_task_to_inode(task, inode);
 
@@ -1445,6 +1449,8 @@
 {
 	struct inode *inode = dentry->d_inode;
 	struct task_struct *task;
+	const struct cred *cred;
+
 	generic_fillattr(inode, stat);
 
 	rcu_read_lock();
@@ -1454,8 +1460,9 @@
 	if (task) {
 		if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
 		    task_dumpable(task)) {
-			stat->uid = task->euid;
-			stat->gid = task->egid;
+			cred = __task_cred(task);
+			stat->uid = cred->euid;
+			stat->gid = cred->egid;
 		}
 	}
 	rcu_read_unlock();
@@ -1483,11 +1490,16 @@
 {
 	struct inode *inode = dentry->d_inode;
 	struct task_struct *task = get_proc_task(inode);
+	const struct cred *cred;
+
 	if (task) {
 		if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
 		    task_dumpable(task)) {
-			inode->i_uid = task->euid;
-			inode->i_gid = task->egid;
+			rcu_read_lock();
+			cred = __task_cred(task);
+			inode->i_uid = cred->euid;
+			inode->i_gid = cred->egid;
+			rcu_read_unlock();
 		} else {
 			inode->i_uid = 0;
 			inode->i_gid = 0;
@@ -1649,6 +1661,7 @@
 	struct task_struct *task = get_proc_task(inode);
 	int fd = proc_fd(inode);
 	struct files_struct *files;
+	const struct cred *cred;
 
 	if (task) {
 		files = get_files_struct(task);
@@ -1658,8 +1671,11 @@
 				rcu_read_unlock();
 				put_files_struct(files);
 				if (task_dumpable(task)) {
-					inode->i_uid = task->euid;
-					inode->i_gid = task->egid;
+					rcu_read_lock();
+					cred = __task_cred(task);
+					inode->i_uid = cred->euid;
+					inode->i_gid = cred->egid;
+					rcu_read_unlock();
 				} else {
 					inode->i_uid = 0;
 					inode->i_gid = 0;
diff --git a/fs/quota.c b/fs/quota.c
index 7f4386e..b7fe44e 100644
--- a/fs/quota.c
+++ b/fs/quota.c
@@ -79,7 +79,7 @@
 
 	/* Check privileges */
 	if (cmd == Q_GETQUOTA) {
-		if (((type == USRQUOTA && current->euid != id) ||
+		if (((type == USRQUOTA && current_euid() != id) ||
 		     (type == GRPQUOTA && !in_egroup_p(id))) &&
 		    !capable(CAP_SYS_ADMIN))
 			return -EPERM;
@@ -130,7 +130,7 @@
 
 	/* Check privileges */
 	if (cmd == Q_XGETQUOTA) {
-		if (((type == XQM_USRQUOTA && current->euid != id) ||
+		if (((type == XQM_USRQUOTA && current_euid() != id) ||
 		     (type == XQM_GRPQUOTA && !in_egroup_p(id))) &&
 		     !capable(CAP_SYS_ADMIN))
 			return -EPERM;
diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index f031d1c..a83a351 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -55,8 +55,8 @@
 
 	if (inode) {
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_blocks = 0;
 		inode->i_mapping->a_ops = &ramfs_aops;
 		inode->i_mapping->backing_dev_info = &ramfs_backing_dev_info;
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index f89ebb9..4f322e5 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -573,7 +573,7 @@
 	/* the quota init calls have to know who to charge the quota to, so
 	 ** we have to set uid and gid here
 	 */
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	inode->i_mode = mode;
 	/* Make inode invalid - just in case we are going to drop it before
 	 * the initialization happens */
@@ -584,7 +584,7 @@
 		if (S_ISDIR(mode))
 			inode->i_mode |= S_ISGID;
 	} else {
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 	}
 	DQUOT_INIT(inode);
 	return 0;
diff --git a/fs/smbfs/dir.c b/fs/smbfs/dir.c
index 48da4fa..e7ddd03 100644
--- a/fs/smbfs/dir.c
+++ b/fs/smbfs/dir.c
@@ -667,8 +667,7 @@
 
 	attr.ia_valid = ATTR_MODE | ATTR_UID | ATTR_GID;
 	attr.ia_mode = mode;
-	attr.ia_uid = current->euid;
-	attr.ia_gid = current->egid;
+	current_euid_egid(&attr.ia_uid, &attr.ia_gid);
 
 	if (!new_valid_dev(dev))
 		return -EINVAL;
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index 3528f40..fc27fbf 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -586,7 +586,7 @@
 		if (parse_options(mnt, raw_data))
 			goto out_bad_option;
 	}
-	mnt->mounted_uid = current->uid;
+	mnt->mounted_uid = current_uid();
 	smb_setcodepage(server, &mnt->codepage);
 
 	/*
diff --git a/fs/smbfs/proc.c b/fs/smbfs/proc.c
index ee536e8..9468168 100644
--- a/fs/smbfs/proc.c
+++ b/fs/smbfs/proc.c
@@ -864,7 +864,7 @@
 		goto out;
 
 	error = -EACCES;
-	if (current->uid != server->mnt->mounted_uid && 
+	if (current_uid() != server->mnt->mounted_uid &&
 	    !capable(CAP_SYS_ADMIN))
 		goto out;
 
diff --git a/fs/sysv/ialloc.c b/fs/sysv/ialloc.c
index 115ab0d..241e976 100644
--- a/fs/sysv/ialloc.c
+++ b/fs/sysv/ialloc.c
@@ -165,9 +165,9 @@
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	inode->i_ino = fs16_to_cpu(sbi, ino);
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
 	inode->i_blocks = 0;
diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index 1a4973e..4a18f08 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -363,7 +363,7 @@
  */
 static int can_use_rp(struct ubifs_info *c)
 {
-	if (current->fsuid == c->rp_uid || capable(CAP_SYS_RESOURCE) ||
+	if (current_fsuid() == c->rp_uid || capable(CAP_SYS_RESOURCE) ||
 	    (c->rp_gid != 0 && in_group_p(c->rp_gid)))
 		return 1;
 	return 0;
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 0422c98..f448ab1 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -104,13 +104,13 @@
 	 */
 	inode->i_flags |= (S_NOCMTIME);
 
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	if (dir->i_mode & S_ISGID) {
 		inode->i_gid = dir->i_gid;
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 	inode->i_mode = mode;
 	inode->i_mtime = inode->i_atime = inode->i_ctime =
 			 ubifs_current_time(inode);
diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c
index a4f2b3c..31fc842 100644
--- a/fs/udf/ialloc.c
+++ b/fs/udf/ialloc.c
@@ -126,13 +126,13 @@
 	}
 	mutex_unlock(&sbi->s_alloc_mutex);
 	inode->i_mode = mode;
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	if (dir->i_mode & S_ISGID) {
 		inode->i_gid = dir->i_gid;
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else {
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 	}
 
 	iinfo->i_location.logicalBlockNum = block;
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 082409c..f84bfaa 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -604,7 +604,7 @@
 		goto out;
 
 	iinfo = UDF_I(inode);
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	init_special_inode(inode, mode, rdev);
 	fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
 	if (!fi) {
diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c
index ac181f6..6f5dcf0 100644
--- a/fs/ufs/ialloc.c
+++ b/fs/ufs/ialloc.c
@@ -304,13 +304,13 @@
 
 	inode->i_ino = cg * uspi->s_ipg + bit;
 	inode->i_mode = mode;
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	if (dir->i_mode & S_ISGID) {
 		inode->i_gid = dir->i_gid;
 		if (S_ISDIR(mode))
 			inode->i_mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 
 	inode->i_blocks = 0;
 	inode->i_generation = 0;
diff --git a/fs/xfs/linux-2.6/xfs_cred.h b/fs/xfs/linux-2.6/xfs_cred.h
index 652721c..8c022cd 100644
--- a/fs/xfs/linux-2.6/xfs_cred.h
+++ b/fs/xfs/linux-2.6/xfs_cred.h
@@ -23,11 +23,9 @@
 /*
  * Credentials
  */
-typedef struct cred {
-	/* EMPTY */
-} cred_t;
+typedef const struct cred cred_t;
 
-extern struct cred *sys_cred;
+extern cred_t *sys_cred;
 
 /* this is a hack.. (assumes sys_cred is the only cred_t in the system) */
 static inline int capable_cred(cred_t *cr, int cid)
diff --git a/fs/xfs/linux-2.6/xfs_globals.h b/fs/xfs/linux-2.6/xfs_globals.h
index 2770b00..6eda8a3 100644
--- a/fs/xfs/linux-2.6/xfs_globals.h
+++ b/fs/xfs/linux-2.6/xfs_globals.h
@@ -19,6 +19,6 @@
 #define __XFS_GLOBALS_H__
 
 extern uint64_t	xfs_panic_mask;		/* set to cause more panics */
-extern struct cred *sys_cred;
+extern cred_t *sys_cred;
 
 #endif	/* __XFS_GLOBALS_H__ */
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index d3438c7..281cbd5 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -256,6 +256,7 @@
 	struct file		*parfilp,
 	struct inode		*parinode)
 {
+	const struct cred	*cred = current_cred();
 	int			error;
 	int			new_fd;
 	int			permflag;
@@ -321,7 +322,7 @@
 	mntget(parfilp->f_path.mnt);
 
 	/* Create file pointer. */
-	filp = dentry_open(dentry, parfilp->f_path.mnt, hreq.oflags);
+	filp = dentry_open(dentry, parfilp->f_path.mnt, hreq.oflags, cred);
 	if (IS_ERR(filp)) {
 		put_unused_fd(new_fd);
 		return -XFS_ERROR(-PTR_ERR(filp));
@@ -1007,7 +1008,7 @@
 	 * to the file owner ID, except in cases where the
 	 * CAP_FSETID capability is applicable.
 	 */
-	if (current->fsuid != ip->i_d.di_uid && !capable(CAP_FOWNER)) {
+	if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) {
 		code = XFS_ERROR(EPERM);
 		goto error_return;
 	}
diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
index b2f639a..91d6933 100644
--- a/fs/xfs/xfs_acl.c
+++ b/fs/xfs/xfs_acl.c
@@ -366,7 +366,7 @@
 		return ENOTDIR;
 	if (vp->i_sb->s_flags & MS_RDONLY)
 		return EROFS;
-	if (XFS_I(vp)->i_d.di_uid != current->fsuid && !capable(CAP_FOWNER))
+	if (XFS_I(vp)->i_d.di_uid != current_fsuid() && !capable(CAP_FOWNER))
 		return EPERM;
 	return 0;
 }
@@ -413,13 +413,13 @@
 		switch (fap->acl_entry[i].ae_tag) {
 		case ACL_USER_OBJ:
 			seen_userobj = 1;
-			if (fuid != current->fsuid)
+			if (fuid != current_fsuid())
 				continue;
 			matched.ae_tag = ACL_USER_OBJ;
 			matched.ae_perm = allows;
 			break;
 		case ACL_USER:
-			if (fap->acl_entry[i].ae_id != current->fsuid)
+			if (fap->acl_entry[i].ae_id != current_fsuid())
 				continue;
 			matched.ae_tag = ACL_USER;
 			matched.ae_perm = allows;
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 1420c49..6be310d 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -497,7 +497,7 @@
 			  xfs_inode_t **, xfs_daddr_t, uint);
 int		xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int);
 int		xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
-			   xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t,
+			   xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t,
 			   int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
 void		xfs_dinode_from_disk(struct xfs_icdinode *,
 				     struct xfs_dinode_core *);
diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h
index e932a96..7b0c2ab 100644
--- a/fs/xfs/xfs_vnodeops.h
+++ b/fs/xfs/xfs_vnodeops.h
@@ -16,7 +16,7 @@
 
 int xfs_open(struct xfs_inode *ip);
 int xfs_setattr(struct xfs_inode *ip, struct iattr *vap, int flags,
-		struct cred *credp);
+		cred_t *credp);
 #define	XFS_ATTR_DMI		0x01	/* invocation from a DMI function */
 #define	XFS_ATTR_NONBLOCK	0x02	/* return EAGAIN if operation would block */
 #define XFS_ATTR_NOLOCK		0x04	/* Don't grab any conflicting locks */
@@ -28,24 +28,24 @@
 int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name,
 		struct xfs_inode **ipp, struct xfs_name *ci_name);
 int xfs_create(struct xfs_inode *dp, struct xfs_name *name, mode_t mode,
-		xfs_dev_t rdev, struct xfs_inode **ipp, struct cred *credp);
+		xfs_dev_t rdev, struct xfs_inode **ipp, cred_t *credp);
 int xfs_remove(struct xfs_inode *dp, struct xfs_name *name,
 		struct xfs_inode *ip);
 int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip,
 		struct xfs_name *target_name);
 int xfs_mkdir(struct xfs_inode *dp, struct xfs_name *dir_name,
-		mode_t mode, struct xfs_inode **ipp, struct cred *credp);
+		mode_t mode, struct xfs_inode **ipp, cred_t *credp);
 int xfs_readdir(struct xfs_inode	*dp, void *dirent, size_t bufsize,
 		       xfs_off_t *offset, filldir_t filldir);
 int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name,
 		const char *target_path, mode_t mode, struct xfs_inode **ipp,
-		struct cred *credp);
+		cred_t *credp);
 int xfs_inode_flush(struct xfs_inode *ip, int flags);
 int xfs_set_dmattrs(struct xfs_inode *ip, u_int evmask, u_int16_t state);
 int xfs_reclaim(struct xfs_inode *ip);
 int xfs_change_file_space(struct xfs_inode *ip, int cmd,
 		xfs_flock64_t *bf, xfs_off_t offset,
-		struct cred *credp, int	attr_flags);
+		cred_t *credp, int	attr_flags);
 int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name,
 		struct xfs_inode *src_ip, struct xfs_inode *target_dp,
 		struct xfs_name *target_name, struct xfs_inode *target_ip);
diff --git a/include/keys/keyring-type.h b/include/keys/keyring-type.h
new file mode 100644
index 0000000..843f872
--- /dev/null
+++ b/include/keys/keyring-type.h
@@ -0,0 +1,31 @@
+/* Keyring key type
+ *
+ * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _KEYS_KEYRING_TYPE_H
+#define _KEYS_KEYRING_TYPE_H
+
+#include <linux/key.h>
+#include <linux/rcupdate.h>
+
+/*
+ * the keyring payload contains a list of the keys to which the keyring is
+ * subscribed
+ */
+struct keyring_list {
+	struct rcu_head	rcu;		/* RCU deletion hook */
+	unsigned short	maxkeys;	/* max keys this list can hold */
+	unsigned short	nkeys;		/* number of keys currently held */
+	unsigned short	delkey;		/* key to be unlinked by RCU */
+	struct key	*keys[0];
+};
+
+
+#endif /* _KEYS_KEYRING_TYPE_H */
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 6272a39..e8ce2c4 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -99,6 +99,8 @@
 #define AUDIT_OBJ_PID		1318	/* ptrace target */
 #define AUDIT_TTY		1319	/* Input on an administrative TTY */
 #define AUDIT_EOE		1320	/* End of multi-record event */
+#define AUDIT_BPRM_FCAPS	1321	/* Information about fcaps increasing perms */
+#define AUDIT_CAPSET		1322	/* Record showing argument to sys_capset */
 
 #define AUDIT_AVC		1400	/* SE Linux avc denial or grant */
 #define AUDIT_SELINUX_ERR	1401	/* Internal SE Linux Errors */
@@ -452,6 +454,10 @@
 extern int __audit_mq_timedreceive(mqd_t mqdes, size_t msg_len, unsigned int __user *u_msg_prio, const struct timespec __user *u_abs_timeout);
 extern int __audit_mq_notify(mqd_t mqdes, const struct sigevent __user *u_notification);
 extern int __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
+extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
+				  const struct cred *new,
+				  const struct cred *old);
+extern int __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
 
 static inline int audit_ipc_obj(struct kern_ipc_perm *ipcp)
 {
@@ -501,6 +507,24 @@
 		return __audit_mq_getsetattr(mqdes, mqstat);
 	return 0;
 }
+
+static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
+				       const struct cred *new,
+				       const struct cred *old)
+{
+	if (unlikely(!audit_dummy_context()))
+		return __audit_log_bprm_fcaps(bprm, new, old);
+	return 0;
+}
+
+static inline int audit_log_capset(pid_t pid, const struct cred *new,
+				   const struct cred *old)
+{
+	if (unlikely(!audit_dummy_context()))
+		return __audit_log_capset(pid, new, old);
+	return 0;
+}
+
 extern int audit_n_rules;
 extern int audit_signals;
 #else
@@ -532,6 +556,8 @@
 #define audit_mq_timedreceive(d,l,p,t) ({ 0; })
 #define audit_mq_notify(d,n) ({ 0; })
 #define audit_mq_getsetattr(d,s) ({ 0; })
+#define audit_log_bprm_fcaps(b, ncr, ocr) ({ 0; })
+#define audit_log_capset(pid, ncr, ocr) ({ 0; })
 #define audit_ptrace(t) ((void)0)
 #define audit_n_rules 0
 #define audit_signals 0
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 7394b5b..6cbfbe2 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -35,16 +35,20 @@
 	struct mm_struct *mm;
 	unsigned long p; /* current top of mem */
 	unsigned int sh_bang:1,
-		     misc_bang:1;
+		misc_bang:1,
+		cred_prepared:1,/* true if creds already prepared (multiple
+				 * preps happen for interpreters) */
+		cap_effective:1;/* true if has elevated effective capabilities,
+				 * false if not; except for init which inherits
+				 * its parent's caps anyway */
 #ifdef __alpha__
 	unsigned int taso:1;
 #endif
 	unsigned int recursion_depth;
 	struct file * file;
-	int e_uid, e_gid;
-	kernel_cap_t cap_post_exec_permitted;
-	bool cap_effective;
-	void *security;
+	struct cred *cred;	/* new credentials */
+	int unsafe;		/* how unsafe this exec is (mask of LSM_UNSAFE_*) */
+	unsigned int per_clear;	/* bits to clear in current->personality */
 	int argc, envc;
 	char * filename;	/* Name of binary as seen by procps */
 	char * interp;		/* Name of the binary really executed. Most
@@ -101,7 +105,7 @@
 			   int executable_stack);
 extern int bprm_mm_init(struct linux_binprm *bprm);
 extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
-extern void compute_creds(struct linux_binprm *binprm);
+extern void install_exec_creds(struct linux_binprm *bprm);
 extern int do_coredump(long signr, int exit_code, struct pt_regs * regs);
 extern int set_binfmt(struct linux_binfmt *new);
 extern void free_bprm(struct linux_binprm *);
diff --git a/include/linux/capability.h b/include/linux/capability.h
index 9d1fe30..e22f48c 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -53,6 +53,7 @@
 #define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX
 
 #define VFS_CAP_REVISION_MASK	0xFF000000
+#define VFS_CAP_REVISION_SHIFT	24
 #define VFS_CAP_FLAGS_MASK	~VFS_CAP_REVISION_MASK
 #define VFS_CAP_FLAGS_EFFECTIVE	0x000001
 
@@ -68,6 +69,9 @@
 #define VFS_CAP_U32             VFS_CAP_U32_2
 #define VFS_CAP_REVISION	VFS_CAP_REVISION_2
 
+#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
+extern int file_caps_enabled;
+#endif
 
 struct vfs_cap_data {
 	__le32 magic_etc;            /* Little endian */
@@ -96,6 +100,13 @@
 	__u32 cap[_KERNEL_CAPABILITY_U32S];
 } kernel_cap_t;
 
+/* exact same as vfs_cap_data but in cpu endian and always filled completely */
+struct cpu_vfs_cap_data {
+	__u32 magic_etc;
+	kernel_cap_t permitted;
+	kernel_cap_t inheritable;
+};
+
 #define _USER_CAP_HEADER_SIZE  (sizeof(struct __user_cap_header_struct))
 #define _KERNEL_CAP_T_SIZE     (sizeof(kernel_cap_t))
 
@@ -454,6 +465,13 @@
 	return 1;
 }
 
+/*
+ * Check if "a" is a subset of "set".
+ * return 1 if ALL of the capabilities in "a" are also in "set"
+ *	cap_issubset(0101, 1111) will return 1
+ * return 0 if ANY of the capabilities in "a" are not in "set"
+ *	cap_issubset(1111, 0101) will return 0
+ */
 static inline int cap_issubset(const kernel_cap_t a, const kernel_cap_t set)
 {
 	kernel_cap_t dest;
@@ -501,8 +519,6 @@
 extern const kernel_cap_t __cap_full_set;
 extern const kernel_cap_t __cap_init_eff_set;
 
-kernel_cap_t cap_set_effective(const kernel_cap_t pE_new);
-
 /**
  * has_capability - Determine if a task has a superior capability available
  * @t: The task in question
@@ -514,9 +530,14 @@
  * Note that this does not set PF_SUPERPRIV on the task.
  */
 #define has_capability(t, cap) (security_capable((t), (cap)) == 0)
+#define has_capability_noaudit(t, cap) (security_capable_noaudit((t), (cap)) == 0)
 
 extern int capable(int cap);
 
+/* audit system wants to get cap info from files as well */
+struct dentry;
+extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps);
+
 #endif /* __KERNEL__ */
 
 #endif /* !_LINUX_CAPABILITY_H */
diff --git a/include/linux/cred.h b/include/linux/cred.h
index b69222c..3282ee4 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -1,4 +1,4 @@
-/* Credentials management
+/* Credentials management - see Documentation/credentials.txt
  *
  * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
@@ -12,39 +12,335 @@
 #ifndef _LINUX_CRED_H
 #define _LINUX_CRED_H
 
-#define get_current_user()	(get_uid(current->user))
+#include <linux/capability.h>
+#include <linux/key.h>
+#include <asm/atomic.h>
 
-#define task_uid(task)		((task)->uid)
-#define task_gid(task)		((task)->gid)
-#define task_euid(task)		((task)->euid)
-#define task_egid(task)		((task)->egid)
+struct user_struct;
+struct cred;
+struct inode;
 
-#define current_uid()		(current->uid)
-#define current_gid()		(current->gid)
-#define current_euid()		(current->euid)
-#define current_egid()		(current->egid)
-#define current_suid()		(current->suid)
-#define current_sgid()		(current->sgid)
-#define current_fsuid()		(current->fsuid)
-#define current_fsgid()		(current->fsgid)
-#define current_cap()		(current->cap_effective)
+/*
+ * COW Supplementary groups list
+ */
+#define NGROUPS_SMALL		32
+#define NGROUPS_PER_BLOCK	((unsigned int)(PAGE_SIZE / sizeof(gid_t)))
+
+struct group_info {
+	atomic_t	usage;
+	int		ngroups;
+	int		nblocks;
+	gid_t		small_block[NGROUPS_SMALL];
+	gid_t		*blocks[0];
+};
+
+/**
+ * get_group_info - Get a reference to a group info structure
+ * @group_info: The group info to reference
+ *
+ * This gets a reference to a set of supplementary groups.
+ *
+ * If the caller is accessing a task's credentials, they must hold the RCU read
+ * lock when reading.
+ */
+static inline struct group_info *get_group_info(struct group_info *gi)
+{
+	atomic_inc(&gi->usage);
+	return gi;
+}
+
+/**
+ * put_group_info - Release a reference to a group info structure
+ * @group_info: The group info to release
+ */
+#define put_group_info(group_info)			\
+do {							\
+	if (atomic_dec_and_test(&(group_info)->usage))	\
+		groups_free(group_info);		\
+} while (0)
+
+extern struct group_info *groups_alloc(int);
+extern struct group_info init_groups;
+extern void groups_free(struct group_info *);
+extern int set_current_groups(struct group_info *);
+extern int set_groups(struct cred *, struct group_info *);
+extern int groups_search(const struct group_info *, gid_t);
+
+/* access the groups "array" with this macro */
+#define GROUP_AT(gi, i) \
+	((gi)->blocks[(i) / NGROUPS_PER_BLOCK][(i) % NGROUPS_PER_BLOCK])
+
+extern int in_group_p(gid_t);
+extern int in_egroup_p(gid_t);
+
+/*
+ * The common credentials for a thread group
+ * - shared by CLONE_THREAD
+ */
+#ifdef CONFIG_KEYS
+struct thread_group_cred {
+	atomic_t	usage;
+	pid_t		tgid;			/* thread group process ID */
+	spinlock_t	lock;
+	struct key	*session_keyring;	/* keyring inherited over fork */
+	struct key	*process_keyring;	/* keyring private to this process */
+	struct rcu_head	rcu;			/* RCU deletion hook */
+};
+#endif
+
+/*
+ * The security context of a task
+ *
+ * The parts of the context break down into two categories:
+ *
+ *  (1) The objective context of a task.  These parts are used when some other
+ *	task is attempting to affect this one.
+ *
+ *  (2) The subjective context.  These details are used when the task is acting
+ *	upon another object, be that a file, a task, a key or whatever.
+ *
+ * Note that some members of this structure belong to both categories - the
+ * LSM security pointer for instance.
+ *
+ * A task has two security pointers.  task->real_cred points to the objective
+ * context that defines that task's actual details.  The objective part of this
+ * context is used whenever that task is acted upon.
+ *
+ * task->cred points to the subjective context that defines the details of how
+ * that task is going to act upon another object.  This may be overridden
+ * temporarily to point to another security context, but normally points to the
+ * same context as task->real_cred.
+ */
+struct cred {
+	atomic_t	usage;
+	uid_t		uid;		/* real UID of the task */
+	gid_t		gid;		/* real GID of the task */
+	uid_t		suid;		/* saved UID of the task */
+	gid_t		sgid;		/* saved GID of the task */
+	uid_t		euid;		/* effective UID of the task */
+	gid_t		egid;		/* effective GID of the task */
+	uid_t		fsuid;		/* UID for VFS ops */
+	gid_t		fsgid;		/* GID for VFS ops */
+	unsigned	securebits;	/* SUID-less security management */
+	kernel_cap_t	cap_inheritable; /* caps our children can inherit */
+	kernel_cap_t	cap_permitted;	/* caps we're permitted */
+	kernel_cap_t	cap_effective;	/* caps we can actually use */
+	kernel_cap_t	cap_bset;	/* capability bounding set */
+#ifdef CONFIG_KEYS
+	unsigned char	jit_keyring;	/* default keyring to attach requested
+					 * keys to */
+	struct key	*thread_keyring; /* keyring private to this thread */
+	struct key	*request_key_auth; /* assumed request_key authority */
+	struct thread_group_cred *tgcred; /* thread-group shared credentials */
+#endif
+#ifdef CONFIG_SECURITY
+	void		*security;	/* subjective LSM security */
+#endif
+	struct user_struct *user;	/* real user ID subscription */
+	struct group_info *group_info;	/* supplementary groups for euid/fsgid */
+	struct rcu_head	rcu;		/* RCU deletion hook */
+};
+
+extern void __put_cred(struct cred *);
+extern int copy_creds(struct task_struct *, unsigned long);
+extern struct cred *prepare_creds(void);
+extern struct cred *prepare_exec_creds(void);
+extern struct cred *prepare_usermodehelper_creds(void);
+extern int commit_creds(struct cred *);
+extern void abort_creds(struct cred *);
+extern const struct cred *override_creds(const struct cred *);
+extern void revert_creds(const struct cred *);
+extern struct cred *prepare_kernel_cred(struct task_struct *);
+extern int change_create_files_as(struct cred *, struct inode *);
+extern int set_security_override(struct cred *, u32);
+extern int set_security_override_from_ctx(struct cred *, const char *);
+extern int set_create_files_as(struct cred *, struct inode *);
+extern void __init cred_init(void);
+
+/**
+ * get_new_cred - Get a reference on a new set of credentials
+ * @cred: The new credentials to reference
+ *
+ * Get a reference on the specified set of new credentials.  The caller must
+ * release the reference.
+ */
+static inline struct cred *get_new_cred(struct cred *cred)
+{
+	atomic_inc(&cred->usage);
+	return cred;
+}
+
+/**
+ * get_cred - Get a reference on a set of credentials
+ * @cred: The credentials to reference
+ *
+ * Get a reference on the specified set of credentials.  The caller must
+ * release the reference.
+ *
+ * This is used to deal with a committed set of credentials.  Although the
+ * pointer is const, this will temporarily discard the const and increment the
+ * usage count.  The purpose of this is to attempt to catch at compile time the
+ * accidental alteration of a set of credentials that should be considered
+ * immutable.
+ */
+static inline const struct cred *get_cred(const struct cred *cred)
+{
+	return get_new_cred((struct cred *) cred);
+}
+
+/**
+ * put_cred - Release a reference to a set of credentials
+ * @cred: The credentials to release
+ *
+ * Release a reference to a set of credentials, deleting them when the last ref
+ * is released.
+ *
+ * This takes a const pointer to a set of credentials because the credentials
+ * on task_struct are attached by const pointers to prevent accidental
+ * alteration of otherwise immutable credential sets.
+ */
+static inline void put_cred(const struct cred *_cred)
+{
+	struct cred *cred = (struct cred *) _cred;
+
+	BUG_ON(atomic_read(&(cred)->usage) <= 0);
+	if (atomic_dec_and_test(&(cred)->usage))
+		__put_cred(cred);
+}
+
+/**
+ * current_cred - Access the current task's subjective credentials
+ *
+ * Access the subjective credentials of the current task.
+ */
+#define current_cred() \
+	(current->cred)
+
+/**
+ * __task_cred - Access a task's objective credentials
+ * @task: The task to query
+ *
+ * Access the objective credentials of a task.  The caller must hold the RCU
+ * readlock.
+ *
+ * The caller must make sure task doesn't go away, either by holding a ref on
+ * task or by holding tasklist_lock to prevent it from being unlinked.
+ */
+#define __task_cred(task) \
+	((const struct cred *)(rcu_dereference((task)->real_cred)))
+
+/**
+ * get_task_cred - Get another task's objective credentials
+ * @task: The task to query
+ *
+ * Get the objective credentials of a task, pinning them so that they can't go
+ * away.  Accessing a task's credentials directly is not permitted.
+ *
+ * The caller must make sure task doesn't go away, either by holding a ref on
+ * task or by holding tasklist_lock to prevent it from being unlinked.
+ */
+#define get_task_cred(task)				\
+({							\
+	struct cred *__cred;				\
+	rcu_read_lock();				\
+	__cred = (struct cred *) __task_cred((task));	\
+	get_cred(__cred);				\
+	rcu_read_unlock();				\
+	__cred;						\
+})
+
+/**
+ * get_current_cred - Get the current task's subjective credentials
+ *
+ * Get the subjective credentials of the current task, pinning them so that
+ * they can't go away.  Accessing the current task's credentials directly is
+ * not permitted.
+ */
+#define get_current_cred()				\
+	(get_cred(current_cred()))
+
+/**
+ * get_current_user - Get the current task's user_struct
+ *
+ * Get the user record of the current task, pinning it so that it can't go
+ * away.
+ */
+#define get_current_user()				\
+({							\
+	struct user_struct *__u;			\
+	struct cred *__cred;				\
+	__cred = (struct cred *) current_cred();	\
+	__u = get_uid(__cred->user);			\
+	__u;						\
+})
+
+/**
+ * get_current_groups - Get the current task's supplementary group list
+ *
+ * Get the supplementary group list of the current task, pinning it so that it
+ * can't go away.
+ */
+#define get_current_groups()				\
+({							\
+	struct group_info *__groups;			\
+	struct cred *__cred;				\
+	__cred = (struct cred *) current_cred();	\
+	__groups = get_group_info(__cred->group_info);	\
+	__groups;					\
+})
+
+#define task_cred_xxx(task, xxx)			\
+({							\
+	__typeof__(((struct cred *)NULL)->xxx) ___val;	\
+	rcu_read_lock();				\
+	___val = __task_cred((task))->xxx;		\
+	rcu_read_unlock();				\
+	___val;						\
+})
+
+#define task_uid(task)		(task_cred_xxx((task), uid))
+#define task_euid(task)		(task_cred_xxx((task), euid))
+
+#define current_cred_xxx(xxx)			\
+({						\
+	current->cred->xxx;			\
+})
+
+#define current_uid()		(current_cred_xxx(uid))
+#define current_gid()		(current_cred_xxx(gid))
+#define current_euid()		(current_cred_xxx(euid))
+#define current_egid()		(current_cred_xxx(egid))
+#define current_suid()		(current_cred_xxx(suid))
+#define current_sgid()		(current_cred_xxx(sgid))
+#define current_fsuid() 	(current_cred_xxx(fsuid))
+#define current_fsgid() 	(current_cred_xxx(fsgid))
+#define current_cap()		(current_cred_xxx(cap_effective))
+#define current_user()		(current_cred_xxx(user))
+#define current_user_ns()	(current_cred_xxx(user)->user_ns)
+#define current_security()	(current_cred_xxx(security))
 
 #define current_uid_gid(_uid, _gid)		\
 do {						\
-	*(_uid) = current->uid;			\
-	*(_gid) = current->gid;			\
+	const struct cred *__cred;		\
+	__cred = current_cred();		\
+	*(_uid) = __cred->uid;			\
+	*(_gid) = __cred->gid;			\
 } while(0)
 
-#define current_euid_egid(_uid, _gid)		\
+#define current_euid_egid(_euid, _egid)		\
 do {						\
-	*(_uid) = current->euid;		\
-	*(_gid) = current->egid;		\
+	const struct cred *__cred;		\
+	__cred = current_cred();		\
+	*(_euid) = __cred->euid;		\
+	*(_egid) = __cred->egid;		\
 } while(0)
 
-#define current_fsuid_fsgid(_uid, _gid)		\
+#define current_fsuid_fsgid(_fsuid, _fsgid)	\
 do {						\
-	*(_uid) = current->fsuid;		\
-	*(_gid) = current->fsgid;		\
+	const struct cred *__cred;		\
+	__cred = current_cred();		\
+	*(_fsuid) = __cred->fsuid;		\
+	*(_fsgid) = __cred->fsgid;		\
 } while(0)
 
 #endif /* _LINUX_CRED_H */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0dcdd94..c0fb6d8 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -315,6 +315,7 @@
 struct kstatfs;
 struct vm_area_struct;
 struct vfsmount;
+struct cred;
 
 extern void __init inode_init(void);
 extern void __init inode_init_early(void);
@@ -826,7 +827,7 @@
 	fmode_t			f_mode;
 	loff_t			f_pos;
 	struct fown_struct	f_owner;
-	unsigned int		f_uid, f_gid;
+	const struct cred	*f_cred;
 	struct file_ra_state	f_ra;
 
 	u64			f_version;
@@ -1193,7 +1194,7 @@
 #define has_fs_excl() atomic_read(&current->fs_excl)
 
 #define is_owner_or_cap(inode)	\
-	((current->fsuid == (inode)->i_uid) || capable(CAP_FOWNER))
+	((current_fsuid() == (inode)->i_uid) || capable(CAP_FOWNER))
 
 /* not quite ready to be deprecated, but... */
 extern void lock_super(struct super_block *);
@@ -1673,7 +1674,8 @@
 extern long do_sys_open(int dfd, const char __user *filename, int flags,
 			int mode);
 extern struct file *filp_open(const char *, int, int);
-extern struct file * dentry_open(struct dentry *, struct vfsmount *, int);
+extern struct file * dentry_open(struct dentry *, struct vfsmount *, int,
+				 const struct cred *);
 extern int filp_close(struct file *, fl_owner_t id);
 extern char * getname(const char __user *);
 
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 23fd890..959f552 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -57,7 +57,6 @@
 	.mnt_ns		= NULL,						\
 	INIT_NET_NS(net_ns)                                             \
 	INIT_IPC_NS(ipc_ns)						\
-	.user_ns	= &init_user_ns,				\
 }
 
 #define INIT_SIGHAND(sighand) {						\
@@ -113,6 +112,8 @@
 # define CAP_INIT_BSET  CAP_INIT_EFF_SET
 #endif
 
+extern struct cred init_cred;
+
 /*
  *  INIT_TASK is used to set up the first task table, touch at
  * your own risk!. Base=0, limit=0x1fffff (=2MB)
@@ -147,13 +148,10 @@
 	.children	= LIST_HEAD_INIT(tsk.children),			\
 	.sibling	= LIST_HEAD_INIT(tsk.sibling),			\
 	.group_leader	= &tsk,						\
-	.group_info	= &init_groups,					\
-	.cap_effective	= CAP_INIT_EFF_SET,				\
-	.cap_inheritable = CAP_INIT_INH_SET,				\
-	.cap_permitted	= CAP_FULL_SET,					\
-	.cap_bset 	= CAP_INIT_BSET,				\
-	.securebits     = SECUREBITS_DEFAULT,				\
-	.user		= INIT_USER,					\
+	.real_cred	= &init_cred,					\
+	.cred		= &init_cred,					\
+	.cred_exec_mutex =						\
+		 __MUTEX_INITIALIZER(tsk.cred_exec_mutex),		\
 	.comm		= "swapper",					\
 	.thread		= INIT_THREAD,					\
 	.fs		= &init_fs,					\
diff --git a/include/linux/key-ui.h b/include/linux/key-ui.h
deleted file mode 100644
index e8b8a7a..0000000
--- a/include/linux/key-ui.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/* key-ui.h: key userspace interface stuff
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#ifndef _LINUX_KEY_UI_H
-#define _LINUX_KEY_UI_H
-
-#include <linux/key.h>
-
-/* the key tree */
-extern struct rb_root key_serial_tree;
-extern spinlock_t key_serial_lock;
-
-/* required permissions */
-#define	KEY_VIEW	0x01	/* require permission to view attributes */
-#define	KEY_READ	0x02	/* require permission to read content */
-#define	KEY_WRITE	0x04	/* require permission to update / modify */
-#define	KEY_SEARCH	0x08	/* require permission to search (keyring) or find (key) */
-#define	KEY_LINK	0x10	/* require permission to link */
-#define	KEY_SETATTR	0x20	/* require permission to change attributes */
-#define	KEY_ALL		0x3f	/* all the above permissions */
-
-/*
- * the keyring payload contains a list of the keys to which the keyring is
- * subscribed
- */
-struct keyring_list {
-	struct rcu_head	rcu;		/* RCU deletion hook */
-	unsigned short	maxkeys;	/* max keys this list can hold */
-	unsigned short	nkeys;		/* number of keys currently held */
-	unsigned short	delkey;		/* key to be unlinked by RCU */
-	struct key	*keys[0];
-};
-
-/*
- * check to see whether permission is granted to use a key in the desired way
- */
-extern int key_task_permission(const key_ref_t key_ref,
-			       struct task_struct *context,
-			       key_perm_t perm);
-
-static inline int key_permission(const key_ref_t key_ref, key_perm_t perm)
-{
-	return key_task_permission(key_ref, current, perm);
-}
-
-extern key_ref_t lookup_user_key(struct task_struct *context,
-				 key_serial_t id, int create, int partial,
-				 key_perm_t perm);
-
-extern long join_session_keyring(const char *name);
-
-extern struct key_type *key_type_lookup(const char *type);
-extern void key_type_put(struct key_type *ktype);
-
-#define key_negative_timeout	60	/* default timeout on a negative key's existence */
-
-
-#endif /* _LINUX_KEY_UI_H */
diff --git a/include/linux/key.h b/include/linux/key.h
index 1b70e35..21d32a1 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -73,6 +73,7 @@
 struct seq_file;
 struct user_struct;
 struct signal_struct;
+struct cred;
 
 struct key_type;
 struct key_owner;
@@ -181,7 +182,7 @@
 extern struct key *key_alloc(struct key_type *type,
 			     const char *desc,
 			     uid_t uid, gid_t gid,
-			     struct task_struct *ctx,
+			     const struct cred *cred,
 			     key_perm_t perm,
 			     unsigned long flags);
 
@@ -249,7 +250,7 @@
 		      struct key *key);
 
 extern struct key *keyring_alloc(const char *description, uid_t uid, gid_t gid,
-				 struct task_struct *ctx,
+				 const struct cred *cred,
 				 unsigned long flags,
 				 struct key *dest);
 
@@ -276,24 +277,11 @@
 /*
  * the userspace interface
  */
-extern void switch_uid_keyring(struct user_struct *new_user);
-extern int copy_keys(unsigned long clone_flags, struct task_struct *tsk);
-extern int copy_thread_group_keys(struct task_struct *tsk);
-extern void exit_keys(struct task_struct *tsk);
-extern void exit_thread_group_keys(struct signal_struct *tg);
-extern int suid_keys(struct task_struct *tsk);
-extern int exec_keys(struct task_struct *tsk);
+extern int install_thread_keyring_to_cred(struct cred *cred);
 extern void key_fsuid_changed(struct task_struct *tsk);
 extern void key_fsgid_changed(struct task_struct *tsk);
 extern void key_init(void);
 
-#define __install_session_keyring(tsk, keyring)			\
-({								\
-	struct key *old_session = tsk->signal->session_keyring;	\
-	tsk->signal->session_keyring = keyring;			\
-	old_session;						\
-})
-
 #else /* CONFIG_KEYS */
 
 #define key_validate(k)			0
@@ -302,17 +290,9 @@
 #define key_revoke(k)			do { } while(0)
 #define key_put(k)			do { } while(0)
 #define key_ref_put(k)			do { } while(0)
-#define make_key_ref(k, p)			({ NULL; })
-#define key_ref_to_ptr(k)		({ NULL; })
+#define make_key_ref(k, p)		NULL
+#define key_ref_to_ptr(k)		NULL
 #define is_key_possessed(k)		0
-#define switch_uid_keyring(u)		do { } while(0)
-#define __install_session_keyring(t, k)	({ NULL; })
-#define copy_keys(f,t)			0
-#define copy_thread_group_keys(t)	0
-#define exit_keys(t)			do { } while(0)
-#define exit_thread_group_keys(tg)	do { } while(0)
-#define suid_keys(t)			do { } while(0)
-#define exec_keys(t)			do { } while(0)
 #define key_fsuid_changed(t)		do { } while(0)
 #define key_fsgid_changed(t)		do { } while(0)
 #define key_init()			do { } while(0)
diff --git a/include/linux/keyctl.h b/include/linux/keyctl.h
index 656ee6b..c0688eb 100644
--- a/include/linux/keyctl.h
+++ b/include/linux/keyctl.h
@@ -1,6 +1,6 @@
 /* keyctl.h: keyctl command IDs
  *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2004, 2008 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
  *
  * This program is free software; you can redistribute it and/or
@@ -20,6 +20,7 @@
 #define KEY_SPEC_USER_SESSION_KEYRING	-5	/* - key ID for UID-session keyring */
 #define KEY_SPEC_GROUP_KEYRING		-6	/* - key ID for GID-specific keyring */
 #define KEY_SPEC_REQKEY_AUTH_KEY	-7	/* - key ID for assumed request_key auth key */
+#define KEY_SPEC_REQUESTOR_KEYRING	-8	/* - key ID for request_key() dest keyring */
 
 /* request-key default keyrings */
 #define KEY_REQKEY_DEFL_NO_CHANGE		-1
@@ -30,6 +31,7 @@
 #define KEY_REQKEY_DEFL_USER_KEYRING		4
 #define KEY_REQKEY_DEFL_USER_SESSION_KEYRING	5
 #define KEY_REQKEY_DEFL_GROUP_KEYRING		6
+#define KEY_REQKEY_DEFL_REQUESTOR_KEYRING	7
 
 /* keyctl commands */
 #define KEYCTL_GET_KEYRING_ID		0	/* ask for a keyring's ID */
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h
index c8a768e..afad7de 100644
--- a/include/linux/nsproxy.h
+++ b/include/linux/nsproxy.h
@@ -27,7 +27,6 @@
 	struct ipc_namespace *ipc_ns;
 	struct mnt_namespace *mnt_ns;
 	struct pid_namespace *pid_ns;
-	struct user_namespace *user_ns;
 	struct net 	     *net_ns;
 };
 extern struct nsproxy init_nsproxy;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 55e30d1..9624e2c 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -572,12 +572,6 @@
 	 */
 	struct rlimit rlim[RLIM_NLIMITS];
 
-	/* keep the process-shared keyrings here so that they do the right
-	 * thing in threads created with CLONE_THREAD */
-#ifdef CONFIG_KEYS
-	struct key *session_keyring;	/* keyring inherited over fork */
-	struct key *process_keyring;	/* keyring private to this process */
-#endif
 #ifdef CONFIG_BSD_PROCESS_ACCT
 	struct pacct_struct pacct;	/* per-process accounting information */
 #endif
@@ -648,6 +642,7 @@
 	/* Hash table maintenance information */
 	struct hlist_node uidhash_node;
 	uid_t uid;
+	struct user_namespace *user_ns;
 
 #ifdef CONFIG_USER_SCHED
 	struct task_group *tg;
@@ -665,6 +660,7 @@
 extern struct user_struct root_user;
 #define INIT_USER (&root_user)
 
+
 struct backing_dev_info;
 struct reclaim_state;
 
@@ -888,38 +884,7 @@
 #endif	/* !CONFIG_SMP */
 
 struct io_context;			/* See blkdev.h */
-#define NGROUPS_SMALL		32
-#define NGROUPS_PER_BLOCK	((unsigned int)(PAGE_SIZE / sizeof(gid_t)))
-struct group_info {
-	int ngroups;
-	atomic_t usage;
-	gid_t small_block[NGROUPS_SMALL];
-	int nblocks;
-	gid_t *blocks[0];
-};
 
-/*
- * get_group_info() must be called with the owning task locked (via task_lock())
- * when task != current.  The reason being that the vast majority of callers are
- * looking at current->group_info, which can not be changed except by the
- * current task.  Changing current->group_info requires the task lock, too.
- */
-#define get_group_info(group_info) do { \
-	atomic_inc(&(group_info)->usage); \
-} while (0)
-
-#define put_group_info(group_info) do { \
-	if (atomic_dec_and_test(&(group_info)->usage)) \
-		groups_free(group_info); \
-} while (0)
-
-extern struct group_info *groups_alloc(int gidsetsize);
-extern void groups_free(struct group_info *group_info);
-extern int set_current_groups(struct group_info *group_info);
-extern int groups_search(struct group_info *group_info, gid_t grp);
-/* access the groups "array" with this macro */
-#define GROUP_AT(gi, i) \
-    ((gi)->blocks[(i)/NGROUPS_PER_BLOCK][(i)%NGROUPS_PER_BLOCK])
 
 #ifdef ARCH_HAS_PREFETCH_SWITCH_STACK
 extern void prefetch_stack(struct task_struct *t);
@@ -1186,17 +1151,12 @@
 	struct list_head cpu_timers[3];
 
 /* process credentials */
-	uid_t uid,euid,suid,fsuid;
-	gid_t gid,egid,sgid,fsgid;
-	struct group_info *group_info;
-	kernel_cap_t   cap_effective, cap_inheritable, cap_permitted, cap_bset;
-	struct user_struct *user;
-	unsigned securebits;
-#ifdef CONFIG_KEYS
-	unsigned char jit_keyring;	/* default keyring to attach requested keys to */
-	struct key *request_key_auth;	/* assumed request_key authority */
-	struct key *thread_keyring;	/* keyring private to this thread */
-#endif
+	const struct cred *real_cred;	/* objective and real subjective task
+					 * credentials (COW) */
+	const struct cred *cred;	/* effective (overridable) subjective task
+					 * credentials (COW) */
+	struct mutex cred_exec_mutex;	/* execve vs ptrace cred calculation mutex */
+
 	char comm[TASK_COMM_LEN]; /* executable name excluding path
 				     - access with [gs]et_task_comm (which lock
 				       it with task_lock())
@@ -1233,9 +1193,6 @@
 	int (*notifier)(void *priv);
 	void *notifier_data;
 	sigset_t *notifier_mask;
-#ifdef CONFIG_SECURITY
-	void *security;
-#endif
 	struct audit_context *audit_context;
 #ifdef CONFIG_AUDITSYSCALL
 	uid_t loginuid;
@@ -1775,7 +1732,6 @@
 	return u;
 }
 extern void free_uid(struct user_struct *);
-extern void switch_uid(struct user_struct *);
 extern void release_uids(struct user_namespace *ns);
 
 #include <asm/current.h>
@@ -1794,9 +1750,6 @@
 extern void sched_fork(struct task_struct *p, int clone_flags);
 extern void sched_dead(struct task_struct *p);
 
-extern int in_group_p(gid_t);
-extern int in_egroup_p(gid_t);
-
 extern void proc_caches_init(void);
 extern void flush_signals(struct task_struct *);
 extern void ignore_signals(struct task_struct *);
@@ -1928,6 +1881,8 @@
 #define for_each_process(p) \
 	for (p = &init_task ; (p = next_task(p)) != &init_task ; )
 
+extern bool is_single_threaded(struct task_struct *);
+
 /*
  * Careful: do_each_thread/while_each_thread is a double loop so
  *          'break' will not work as expected - use goto instead.
diff --git a/include/linux/securebits.h b/include/linux/securebits.h
index 92f09bd..d2c5ed8 100644
--- a/include/linux/securebits.h
+++ b/include/linux/securebits.h
@@ -32,7 +32,7 @@
    setting is locked or not. A setting which is locked cannot be
    changed from user-level. */
 #define issecure_mask(X)	(1 << (X))
-#define issecure(X)		(issecure_mask(X) & current->securebits)
+#define issecure(X)		(issecure_mask(X) & current_cred_xxx(securebits))
 
 #define SECURE_ALL_BITS		(issecure_mask(SECURE_NOROOT) | \
 				 issecure_mask(SECURE_NO_SETUID_FIXUP) | \
diff --git a/include/linux/security.h b/include/linux/security.h
index e3d4ecd..6423abf 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -37,6 +37,10 @@
 /* Maximum number of letters for an LSM name string */
 #define SECURITY_NAME_MAX	10
 
+/* If capable should audit the security request */
+#define SECURITY_CAP_NOAUDIT 0
+#define SECURITY_CAP_AUDIT 1
+
 struct ctl_table;
 struct audit_krule;
 
@@ -44,25 +48,25 @@
  * These functions are in security/capability.c and are used
  * as the default capabilities functions
  */
-extern int cap_capable(struct task_struct *tsk, int cap);
+extern int cap_capable(struct task_struct *tsk, int cap, int audit);
 extern int cap_settime(struct timespec *ts, struct timezone *tz);
 extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode);
 extern int cap_ptrace_traceme(struct task_struct *parent);
 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
-extern int cap_capset_check(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
-extern void cap_capset_set(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
-extern int cap_bprm_set_security(struct linux_binprm *bprm);
-extern void cap_bprm_apply_creds(struct linux_binprm *bprm, int unsafe);
+extern int cap_capset(struct cred *new, const struct cred *old,
+		      const kernel_cap_t *effective,
+		      const kernel_cap_t *inheritable,
+		      const kernel_cap_t *permitted);
+extern int cap_bprm_set_creds(struct linux_binprm *bprm);
 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
 			      const void *value, size_t size, int flags);
 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
 extern int cap_inode_need_killpriv(struct dentry *dentry);
 extern int cap_inode_killpriv(struct dentry *dentry);
-extern int cap_task_post_setuid(uid_t old_ruid, uid_t old_euid, uid_t old_suid, int flags);
-extern void cap_task_reparent_to_init(struct task_struct *p);
+extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
-			  unsigned long arg4, unsigned long arg5, long *rc_p);
+			  unsigned long arg4, unsigned long arg5);
 extern int cap_task_setscheduler(struct task_struct *p, int policy, struct sched_param *lp);
 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
 extern int cap_task_setnice(struct task_struct *p, int nice);
@@ -105,7 +109,7 @@
 struct sched_param;
 struct request_sock;
 
-/* bprm_apply_creds unsafe reasons */
+/* bprm->unsafe reasons */
 #define LSM_UNSAFE_SHARE	1
 #define LSM_UNSAFE_PTRACE	2
 #define LSM_UNSAFE_PTRACE_CAP	4
@@ -149,36 +153,7 @@
  *
  * Security hooks for program execution operations.
  *
- * @bprm_alloc_security:
- *	Allocate and attach a security structure to the @bprm->security field.
- *	The security field is initialized to NULL when the bprm structure is
- *	allocated.
- *	@bprm contains the linux_binprm structure to be modified.
- *	Return 0 if operation was successful.
- * @bprm_free_security:
- *	@bprm contains the linux_binprm structure to be modified.
- *	Deallocate and clear the @bprm->security field.
- * @bprm_apply_creds:
- *	Compute and set the security attributes of a process being transformed
- *	by an execve operation based on the old attributes (current->security)
- *	and the information saved in @bprm->security by the set_security hook.
- *	Since this hook function (and its caller) are void, this hook can not
- *	return an error.  However, it can leave the security attributes of the
- *	process unchanged if an access failure occurs at this point.
- *	bprm_apply_creds is called under task_lock.  @unsafe indicates various
- *	reasons why it may be unsafe to change security state.
- *	@bprm contains the linux_binprm structure.
- * @bprm_post_apply_creds:
- *	Runs after bprm_apply_creds with the task_lock dropped, so that
- *	functions which cannot be called safely under the task_lock can
- *	be used.  This hook is a good place to perform state changes on
- *	the process such as closing open file descriptors to which access
- *	is no longer granted if the attributes were changed.
- *	Note that a security module might need to save state between
- *	bprm_apply_creds and bprm_post_apply_creds to store the decision
- *	on whether the process may proceed.
- *	@bprm contains the linux_binprm structure.
- * @bprm_set_security:
+ * @bprm_set_creds:
  *	Save security information in the bprm->security field, typically based
  *	on information about the bprm->file, for later use by the apply_creds
  *	hook.  This hook may also optionally check permissions (e.g. for
@@ -191,15 +166,30 @@
  *	@bprm contains the linux_binprm structure.
  *	Return 0 if the hook is successful and permission is granted.
  * @bprm_check_security:
- *	This hook mediates the point when a search for a binary handler	will
- *	begin.  It allows a check the @bprm->security value which is set in
- *	the preceding set_security call.  The primary difference from
- *	set_security is that the argv list and envp list are reliably
- *	available in @bprm.  This hook may be called multiple times
- *	during a single execve; and in each pass set_security is called
- *	first.
+ *	This hook mediates the point when a search for a binary handler will
+ *	begin.  It allows a check the @bprm->security value which is set in the
+ *	preceding set_creds call.  The primary difference from set_creds is
+ *	that the argv list and envp list are reliably available in @bprm.  This
+ *	hook may be called multiple times during a single execve; and in each
+ *	pass set_creds is called first.
  *	@bprm contains the linux_binprm structure.
  *	Return 0 if the hook is successful and permission is granted.
+ * @bprm_committing_creds:
+ *	Prepare to install the new security attributes of a process being
+ *	transformed by an execve operation, based on the old credentials
+ *	pointed to by @current->cred and the information set in @bprm->cred by
+ *	the bprm_set_creds hook.  @bprm points to the linux_binprm structure.
+ *	This hook is a good place to perform state changes on the process such
+ *	as closing open file descriptors to which access will no longer be
+ *	granted when the attributes are changed.  This is called immediately
+ *	before commit_creds().
+ * @bprm_committed_creds:
+ *	Tidy up after the installation of the new security attributes of a
+ *	process being transformed by an execve operation.  The new credentials
+ *	have, by this point, been set to @current->cred.  @bprm points to the
+ *	linux_binprm structure.  This hook is a good place to perform state
+ *	changes on the process such as clearing out non-inheritable signal
+ *	state.  This is called immediately after commit_creds().
  * @bprm_secureexec:
  *	Return a boolean value (0 or 1) indicating whether a "secure exec"
  *	is required.  The flag is passed in the auxiliary table
@@ -585,15 +575,31 @@
  *	manual page for definitions of the @clone_flags.
  *	@clone_flags contains the flags indicating what should be shared.
  *	Return 0 if permission is granted.
- * @task_alloc_security:
- *	@p contains the task_struct for child process.
- *	Allocate and attach a security structure to the p->security field. The
- *	security field is initialized to NULL when the task structure is
- *	allocated.
- *	Return 0 if operation was successful.
- * @task_free_security:
- *	@p contains the task_struct for process.
- *	Deallocate and clear the p->security field.
+ * @cred_free:
+ *	@cred points to the credentials.
+ *	Deallocate and clear the cred->security field in a set of credentials.
+ * @cred_prepare:
+ *	@new points to the new credentials.
+ *	@old points to the original credentials.
+ *	@gfp indicates the atomicity of any memory allocations.
+ *	Prepare a new set of credentials by copying the data from the old set.
+ * @cred_commit:
+ *	@new points to the new credentials.
+ *	@old points to the original credentials.
+ *	Install a new set of credentials.
+ * @kernel_act_as:
+ *	Set the credentials for a kernel service to act as (subjective context).
+ *	@new points to the credentials to be modified.
+ *	@secid specifies the security ID to be set
+ *	The current task must be the one that nominated @secid.
+ *	Return 0 if successful.
+ * @kernel_create_files_as:
+ *	Set the file creation context in a set of credentials to be the same as
+ *	the objective context of the specified inode.
+ *	@new points to the credentials to be modified.
+ *	@inode points to the inode to use as a reference.
+ *	The current task must be the one that nominated @inode.
+ *	Return 0 if successful.
  * @task_setuid:
  *	Check permission before setting one or more of the user identity
  *	attributes of the current process.  The @flags parameter indicates
@@ -606,15 +612,13 @@
  *	@id2 contains a uid.
  *	@flags contains one of the LSM_SETID_* values.
  *	Return 0 if permission is granted.
- * @task_post_setuid:
+ * @task_fix_setuid:
  *	Update the module's state after setting one or more of the user
  *	identity attributes of the current process.  The @flags parameter
  *	indicates which of the set*uid system calls invoked this hook.  If
- *	@flags is LSM_SETID_FS, then @old_ruid is the old fs uid and the other
- *	parameters are not used.
- *	@old_ruid contains the old real uid (or fs uid if LSM_SETID_FS).
- *	@old_euid contains the old effective uid (or -1 if LSM_SETID_FS).
- *	@old_suid contains the old saved uid (or -1 if LSM_SETID_FS).
+ *	@new is the set of credentials that will be installed.  Modifications
+ *	should be made to this rather than to @current->cred.
+ *	@old is the set of credentials that are being replaces
  *	@flags contains one of the LSM_SETID_* values.
  *	Return 0 on success.
  * @task_setgid:
@@ -717,13 +721,8 @@
  *	@arg3 contains a argument.
  *	@arg4 contains a argument.
  *	@arg5 contains a argument.
- *      @rc_p contains a pointer to communicate back the forced return code
- *	Return 0 if permission is granted, and non-zero if the security module
- *      has taken responsibility (setting *rc_p) for the prctl call.
- * @task_reparent_to_init:
- *	Set the security attributes in @p->security for a kernel thread that
- *	is being reparented to the init task.
- *	@p contains the task_struct for the kernel thread.
+ *	Return -ENOSYS if no-one wanted to handle this op, any other value to
+ *	cause prctl() to return immediately with that value.
  * @task_to_inode:
  *	Set the security attributes for an inode based on an associated task's
  *	security attributes, e.g. for /proc/pid inodes.
@@ -1000,7 +999,7 @@
  *	See whether a specific operational right is granted to a process on a
  *	key.
  *	@key_ref refers to the key (key pointer + possession attribute bit).
- *	@context points to the process to provide the context against which to
+ *	@cred points to the credentials to provide the context against which to
  *	evaluate the security data on the key.
  *	@perm describes the combination of permissions required of this key.
  *	Return 1 if permission granted, 0 if permission denied and -ve it the
@@ -1162,6 +1161,7 @@
  *	@child process.
  *	Security modules may also want to perform a process tracing check
  *	during an execve in the set_security or apply_creds hooks of
+ *	tracing check during an execve in the bprm_set_creds hook of
  *	binprm_security_ops if the process is being traced and its security
  *	attributes would be changed by the execve.
  *	@child contains the task_struct structure for the target process.
@@ -1185,29 +1185,15 @@
  *	@inheritable contains the inheritable capability set.
  *	@permitted contains the permitted capability set.
  *	Return 0 if the capability sets were successfully obtained.
- * @capset_check:
- *	Check permission before setting the @effective, @inheritable, and
- *	@permitted capability sets for the @target process.
- *	Caveat:  @target is also set to current if a set of processes is
- *	specified (i.e. all processes other than current and init or a
- *	particular process group).  Hence, the capset_set hook may need to
- *	revalidate permission to the actual target process.
- *	@target contains the task_struct structure for target process.
- *	@effective contains the effective capability set.
- *	@inheritable contains the inheritable capability set.
- *	@permitted contains the permitted capability set.
- *	Return 0 if permission is granted.
- * @capset_set:
+ * @capset:
  *	Set the @effective, @inheritable, and @permitted capability sets for
- *	the @target process.  Since capset_check cannot always check permission
- *	to the real @target process, this hook may also perform permission
- *	checking to determine if the current process is allowed to set the
- *	capability sets of the @target process.  However, this hook has no way
- *	of returning an error due to the structure of the sys_capset code.
- *	@target contains the task_struct structure for target process.
+ *	the current process.
+ *	@new contains the new credentials structure for target process.
+ *	@old contains the current credentials structure for target process.
  *	@effective contains the effective capability set.
  *	@inheritable contains the inheritable capability set.
  *	@permitted contains the permitted capability set.
+ *	Return 0 and update @new if permission is granted.
  * @capable:
  *	Check whether the @tsk process has the @cap capability.
  *	@tsk contains the task_struct for the process.
@@ -1299,15 +1285,12 @@
 	int (*capget) (struct task_struct *target,
 		       kernel_cap_t *effective,
 		       kernel_cap_t *inheritable, kernel_cap_t *permitted);
-	int (*capset_check) (struct task_struct *target,
-			     kernel_cap_t *effective,
-			     kernel_cap_t *inheritable,
-			     kernel_cap_t *permitted);
-	void (*capset_set) (struct task_struct *target,
-			    kernel_cap_t *effective,
-			    kernel_cap_t *inheritable,
-			    kernel_cap_t *permitted);
-	int (*capable) (struct task_struct *tsk, int cap);
+	int (*capset) (struct cred *new,
+		       const struct cred *old,
+		       const kernel_cap_t *effective,
+		       const kernel_cap_t *inheritable,
+		       const kernel_cap_t *permitted);
+	int (*capable) (struct task_struct *tsk, int cap, int audit);
 	int (*acct) (struct file *file);
 	int (*sysctl) (struct ctl_table *table, int op);
 	int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
@@ -1316,13 +1299,11 @@
 	int (*settime) (struct timespec *ts, struct timezone *tz);
 	int (*vm_enough_memory) (struct mm_struct *mm, long pages);
 
-	int (*bprm_alloc_security) (struct linux_binprm *bprm);
-	void (*bprm_free_security) (struct linux_binprm *bprm);
-	void (*bprm_apply_creds) (struct linux_binprm *bprm, int unsafe);
-	void (*bprm_post_apply_creds) (struct linux_binprm *bprm);
-	int (*bprm_set_security) (struct linux_binprm *bprm);
+	int (*bprm_set_creds) (struct linux_binprm *bprm);
 	int (*bprm_check_security) (struct linux_binprm *bprm);
 	int (*bprm_secureexec) (struct linux_binprm *bprm);
+	void (*bprm_committing_creds) (struct linux_binprm *bprm);
+	void (*bprm_committed_creds) (struct linux_binprm *bprm);
 
 	int (*sb_alloc_security) (struct super_block *sb);
 	void (*sb_free_security) (struct super_block *sb);
@@ -1406,14 +1387,18 @@
 	int (*file_send_sigiotask) (struct task_struct *tsk,
 				    struct fown_struct *fown, int sig);
 	int (*file_receive) (struct file *file);
-	int (*dentry_open) (struct file *file);
+	int (*dentry_open) (struct file *file, const struct cred *cred);
 
 	int (*task_create) (unsigned long clone_flags);
-	int (*task_alloc_security) (struct task_struct *p);
-	void (*task_free_security) (struct task_struct *p);
+	void (*cred_free) (struct cred *cred);
+	int (*cred_prepare)(struct cred *new, const struct cred *old,
+			    gfp_t gfp);
+	void (*cred_commit)(struct cred *new, const struct cred *old);
+	int (*kernel_act_as)(struct cred *new, u32 secid);
+	int (*kernel_create_files_as)(struct cred *new, struct inode *inode);
 	int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
-	int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
-				 uid_t old_euid, uid_t old_suid, int flags);
+	int (*task_fix_setuid) (struct cred *new, const struct cred *old,
+				int flags);
 	int (*task_setgid) (gid_t id0, gid_t id1, gid_t id2, int flags);
 	int (*task_setpgid) (struct task_struct *p, pid_t pgid);
 	int (*task_getpgid) (struct task_struct *p);
@@ -1433,8 +1418,7 @@
 	int (*task_wait) (struct task_struct *p);
 	int (*task_prctl) (int option, unsigned long arg2,
 			   unsigned long arg3, unsigned long arg4,
-			   unsigned long arg5, long *rc_p);
-	void (*task_reparent_to_init) (struct task_struct *p);
+			   unsigned long arg5);
 	void (*task_to_inode) (struct task_struct *p, struct inode *inode);
 
 	int (*ipc_permission) (struct kern_ipc_perm *ipcp, short flag);
@@ -1539,10 +1523,10 @@
 
 	/* key management security hooks */
 #ifdef CONFIG_KEYS
-	int (*key_alloc) (struct key *key, struct task_struct *tsk, unsigned long flags);
+	int (*key_alloc) (struct key *key, const struct cred *cred, unsigned long flags);
 	void (*key_free) (struct key *key);
 	int (*key_permission) (key_ref_t key_ref,
-			       struct task_struct *context,
+			       const struct cred *cred,
 			       key_perm_t perm);
 	int (*key_getsecurity)(struct key *key, char **_buffer);
 #endif	/* CONFIG_KEYS */
@@ -1568,15 +1552,12 @@
 		    kernel_cap_t *effective,
 		    kernel_cap_t *inheritable,
 		    kernel_cap_t *permitted);
-int security_capset_check(struct task_struct *target,
-			  kernel_cap_t *effective,
-			  kernel_cap_t *inheritable,
-			  kernel_cap_t *permitted);
-void security_capset_set(struct task_struct *target,
-			 kernel_cap_t *effective,
-			 kernel_cap_t *inheritable,
-			 kernel_cap_t *permitted);
+int security_capset(struct cred *new, const struct cred *old,
+		    const kernel_cap_t *effective,
+		    const kernel_cap_t *inheritable,
+		    const kernel_cap_t *permitted);
 int security_capable(struct task_struct *tsk, int cap);
+int security_capable_noaudit(struct task_struct *tsk, int cap);
 int security_acct(struct file *file);
 int security_sysctl(struct ctl_table *table, int op);
 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
@@ -1586,12 +1567,10 @@
 int security_vm_enough_memory(long pages);
 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
 int security_vm_enough_memory_kern(long pages);
-int security_bprm_alloc(struct linux_binprm *bprm);
-void security_bprm_free(struct linux_binprm *bprm);
-void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe);
-void security_bprm_post_apply_creds(struct linux_binprm *bprm);
-int security_bprm_set(struct linux_binprm *bprm);
+int security_bprm_set_creds(struct linux_binprm *bprm);
 int security_bprm_check(struct linux_binprm *bprm);
+void security_bprm_committing_creds(struct linux_binprm *bprm);
+void security_bprm_committed_creds(struct linux_binprm *bprm);
 int security_bprm_secureexec(struct linux_binprm *bprm);
 int security_sb_alloc(struct super_block *sb);
 void security_sb_free(struct super_block *sb);
@@ -1663,13 +1642,16 @@
 int security_file_send_sigiotask(struct task_struct *tsk,
 				 struct fown_struct *fown, int sig);
 int security_file_receive(struct file *file);
-int security_dentry_open(struct file *file);
+int security_dentry_open(struct file *file, const struct cred *cred);
 int security_task_create(unsigned long clone_flags);
-int security_task_alloc(struct task_struct *p);
-void security_task_free(struct task_struct *p);
+void security_cred_free(struct cred *cred);
+int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
+void security_commit_creds(struct cred *new, const struct cred *old);
+int security_kernel_act_as(struct cred *new, u32 secid);
+int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
-int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
-			      uid_t old_suid, int flags);
+int security_task_fix_setuid(struct cred *new, const struct cred *old,
+			     int flags);
 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags);
 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 int security_task_getpgid(struct task_struct *p);
@@ -1688,8 +1670,7 @@
 			int sig, u32 secid);
 int security_task_wait(struct task_struct *p);
 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
-			 unsigned long arg4, unsigned long arg5, long *rc_p);
-void security_task_reparent_to_init(struct task_struct *p);
+			unsigned long arg4, unsigned long arg5);
 void security_task_to_inode(struct task_struct *p, struct inode *inode);
 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
@@ -1764,25 +1745,23 @@
 	return cap_capget(target, effective, inheritable, permitted);
 }
 
-static inline int security_capset_check(struct task_struct *target,
-					 kernel_cap_t *effective,
-					 kernel_cap_t *inheritable,
-					 kernel_cap_t *permitted)
+static inline int security_capset(struct cred *new,
+				   const struct cred *old,
+				   const kernel_cap_t *effective,
+				   const kernel_cap_t *inheritable,
+				   const kernel_cap_t *permitted)
 {
-	return cap_capset_check(target, effective, inheritable, permitted);
-}
-
-static inline void security_capset_set(struct task_struct *target,
-					kernel_cap_t *effective,
-					kernel_cap_t *inheritable,
-					kernel_cap_t *permitted)
-{
-	cap_capset_set(target, effective, inheritable, permitted);
+	return cap_capset(new, old, effective, inheritable, permitted);
 }
 
 static inline int security_capable(struct task_struct *tsk, int cap)
 {
-	return cap_capable(tsk, cap);
+	return cap_capable(tsk, cap, SECURITY_CAP_AUDIT);
+}
+
+static inline int security_capable_noaudit(struct task_struct *tsk, int cap)
+{
+	return cap_capable(tsk, cap, SECURITY_CAP_NOAUDIT);
 }
 
 static inline int security_acct(struct file *file)
@@ -1835,27 +1814,9 @@
 	return cap_vm_enough_memory(current->mm, pages);
 }
 
-static inline int security_bprm_alloc(struct linux_binprm *bprm)
+static inline int security_bprm_set_creds(struct linux_binprm *bprm)
 {
-	return 0;
-}
-
-static inline void security_bprm_free(struct linux_binprm *bprm)
-{ }
-
-static inline void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe)
-{
-	cap_bprm_apply_creds(bprm, unsafe);
-}
-
-static inline void security_bprm_post_apply_creds(struct linux_binprm *bprm)
-{
-	return;
-}
-
-static inline int security_bprm_set(struct linux_binprm *bprm)
-{
-	return cap_bprm_set_security(bprm);
+	return cap_bprm_set_creds(bprm);
 }
 
 static inline int security_bprm_check(struct linux_binprm *bprm)
@@ -1863,6 +1824,14 @@
 	return 0;
 }
 
+static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
+{
+}
+
+static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
+{
+}
+
 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
 {
 	return cap_bprm_secureexec(bprm);
@@ -2177,7 +2146,8 @@
 	return 0;
 }
 
-static inline int security_dentry_open(struct file *file)
+static inline int security_dentry_open(struct file *file,
+				       const struct cred *cred)
 {
 	return 0;
 }
@@ -2187,13 +2157,31 @@
 	return 0;
 }
 
-static inline int security_task_alloc(struct task_struct *p)
+static inline void security_cred_free(struct cred *cred)
+{ }
+
+static inline int security_prepare_creds(struct cred *new,
+					 const struct cred *old,
+					 gfp_t gfp)
 {
 	return 0;
 }
 
-static inline void security_task_free(struct task_struct *p)
-{ }
+static inline void security_commit_creds(struct cred *new,
+					 const struct cred *old)
+{
+}
+
+static inline int security_kernel_act_as(struct cred *cred, u32 secid)
+{
+	return 0;
+}
+
+static inline int security_kernel_create_files_as(struct cred *cred,
+						  struct inode *inode)
+{
+	return 0;
+}
 
 static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,
 				       int flags)
@@ -2201,10 +2189,11 @@
 	return 0;
 }
 
-static inline int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
-					    uid_t old_suid, int flags)
+static inline int security_task_fix_setuid(struct cred *new,
+					   const struct cred *old,
+					   int flags)
 {
-	return cap_task_post_setuid(old_ruid, old_euid, old_suid, flags);
+	return cap_task_fix_setuid(new, old, flags);
 }
 
 static inline int security_task_setgid(gid_t id0, gid_t id1, gid_t id2,
@@ -2291,14 +2280,9 @@
 static inline int security_task_prctl(int option, unsigned long arg2,
 				      unsigned long arg3,
 				      unsigned long arg4,
-				      unsigned long arg5, long *rc_p)
+				      unsigned long arg5)
 {
-	return cap_task_prctl(option, arg2, arg3, arg3, arg5, rc_p);
-}
-
-static inline void security_task_reparent_to_init(struct task_struct *p)
-{
-	cap_task_reparent_to_init(p);
+	return cap_task_prctl(option, arg2, arg3, arg3, arg5);
 }
 
 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
@@ -2724,16 +2708,16 @@
 #ifdef CONFIG_KEYS
 #ifdef CONFIG_SECURITY
 
-int security_key_alloc(struct key *key, struct task_struct *tsk, unsigned long flags);
+int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
 void security_key_free(struct key *key);
 int security_key_permission(key_ref_t key_ref,
-			    struct task_struct *context, key_perm_t perm);
+			    const struct cred *cred, key_perm_t perm);
 int security_key_getsecurity(struct key *key, char **_buffer);
 
 #else
 
 static inline int security_key_alloc(struct key *key,
-				     struct task_struct *tsk,
+				     const struct cred *cred,
 				     unsigned long flags)
 {
 	return 0;
@@ -2744,7 +2728,7 @@
 }
 
 static inline int security_key_permission(key_ref_t key_ref,
-					  struct task_struct *context,
+					  const struct cred *cred,
 					  key_perm_t perm)
 {
 	return 0;
diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h
index b5f41d4..315bcd3 100644
--- a/include/linux/user_namespace.h
+++ b/include/linux/user_namespace.h
@@ -12,7 +12,7 @@
 struct user_namespace {
 	struct kref		kref;
 	struct hlist_head	uidhash_table[UIDHASH_SZ];
-	struct user_struct	*root_user;
+	struct user_struct	*creator;
 };
 
 extern struct user_namespace init_user_ns;
@@ -26,8 +26,7 @@
 	return ns;
 }
 
-extern struct user_namespace *copy_user_ns(int flags,
-					   struct user_namespace *old_ns);
+extern int create_user_ns(struct cred *new);
 extern void free_user_ns(struct kref *kref);
 
 static inline void put_user_ns(struct user_namespace *ns)
@@ -43,13 +42,9 @@
 	return &init_user_ns;
 }
 
-static inline struct user_namespace *copy_user_ns(int flags,
-						  struct user_namespace *old_ns)
+static inline int create_user_ns(struct cred *new)
 {
-	if (flags & CLONE_NEWUSER)
-		return ERR_PTR(-EINVAL);
-
-	return old_ns;
+	return -EINVAL;
 }
 
 static inline void put_user_ns(struct user_namespace *ns)
diff --git a/include/net/scm.h b/include/net/scm.h
index 33e9986..f45bb6e 100644
--- a/include/net/scm.h
+++ b/include/net/scm.h
@@ -55,8 +55,8 @@
 			       struct scm_cookie *scm)
 {
 	struct task_struct *p = current;
-	scm->creds.uid = p->uid;
-	scm->creds.gid = p->gid;
+	scm->creds.uid = current_uid();
+	scm->creds.gid = current_gid();
 	scm->creds.pid = task_tgid_vnr(p);
 	scm->fp = NULL;
 	scm->seq = 0;
diff --git a/init/main.c b/init/main.c
index 7e117a2..db843bf 100644
--- a/init/main.c
+++ b/init/main.c
@@ -669,6 +669,7 @@
 		efi_enter_virtual_mode();
 #endif
 	thread_info_cache_init();
+	cred_init();
 	fork_init(num_physpages);
 	proc_caches_init();
 	buffer_init();
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 68eb857..d9393f8 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -112,13 +112,14 @@
 static struct inode *mqueue_get_inode(struct super_block *sb, int mode,
 							struct mq_attr *attr)
 {
+	struct user_struct *u = current_user();
 	struct inode *inode;
 
 	inode = new_inode(sb);
 	if (inode) {
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_blocks = 0;
 		inode->i_mtime = inode->i_ctime = inode->i_atime =
 				CURRENT_TIME;
@@ -126,7 +127,6 @@
 		if (S_ISREG(mode)) {
 			struct mqueue_inode_info *info;
 			struct task_struct *p = current;
-			struct user_struct *u = p->user;
 			unsigned long mq_bytes, mq_msg_tblsz;
 
 			inode->i_fop = &mqueue_file_operations;
@@ -507,7 +507,7 @@
 			sig_i.si_code = SI_MESGQ;
 			sig_i.si_value = info->notify.sigev_value;
 			sig_i.si_pid = task_tgid_vnr(current);
-			sig_i.si_uid = current->uid;
+			sig_i.si_uid = current_uid();
 
 			kill_pid_info(info->notify.sigev_signo,
 				      &sig_i, info->notify_owner);
@@ -594,6 +594,7 @@
 static struct file *do_create(struct dentry *dir, struct dentry *dentry,
 			int oflag, mode_t mode, struct mq_attr __user *u_attr)
 {
+	const struct cred *cred = current_cred();
 	struct mq_attr attr;
 	struct file *result;
 	int ret;
@@ -618,7 +619,7 @@
 	if (ret)
 		goto out_drop_write;
 
-	result = dentry_open(dentry, mqueue_mnt, oflag);
+	result = dentry_open(dentry, mqueue_mnt, oflag, cred);
 	/*
 	 * dentry_open() took a persistent mnt_want_write(),
 	 * so we can now drop this one.
@@ -637,8 +638,10 @@
 /* Opens existing queue */
 static struct file *do_open(struct dentry *dentry, int oflag)
 {
-static int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
-					MAY_READ | MAY_WRITE };
+	const struct cred *cred = current_cred();
+
+	static const int oflag2acc[O_ACCMODE] = { MAY_READ, MAY_WRITE,
+						  MAY_READ | MAY_WRITE };
 
 	if ((oflag & O_ACCMODE) == (O_RDWR | O_WRONLY)) {
 		dput(dentry);
@@ -652,7 +655,7 @@
 		return ERR_PTR(-EACCES);
 	}
 
-	return dentry_open(dentry, mqueue_mnt, oflag);
+	return dentry_open(dentry, mqueue_mnt, oflag, cred);
 }
 
 asmlinkage long sys_mq_open(const char __user *u_name, int oflag, mode_t mode,
diff --git a/ipc/shm.c b/ipc/shm.c
index 867e5d6..38a0557 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -366,7 +366,7 @@
 	if (shmflg & SHM_HUGETLB) {
 		/* hugetlb_file_setup takes care of mlock user accounting */
 		file = hugetlb_file_setup(name, size);
-		shp->mlock_user = current->user;
+		shp->mlock_user = current_user();
 	} else {
 		int acctflag = VM_ACCOUNT;
 		/*
@@ -752,9 +752,10 @@
 			goto out_unlock;
 
 		if (!capable(CAP_IPC_LOCK)) {
+			uid_t euid = current_euid();
 			err = -EPERM;
-			if (current->euid != shp->shm_perm.uid &&
-			    current->euid != shp->shm_perm.cuid)
+			if (euid != shp->shm_perm.uid &&
+			    euid != shp->shm_perm.cuid)
 				goto out_unlock;
 			if (cmd == SHM_LOCK &&
 			    !current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur)
@@ -766,7 +767,7 @@
 			goto out_unlock;
 		
 		if(cmd==SHM_LOCK) {
-			struct user_struct * user = current->user;
+			struct user_struct *user = current_user();
 			if (!is_file_hugepages(shp->shm_file)) {
 				err = shmem_lock(shp->shm_file, 1, user);
 				if (!err && !(shp->shm_perm.mode & SHM_LOCKED)){
diff --git a/ipc/util.c b/ipc/util.c
index 361fd1c..5a1808c 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -258,6 +258,8 @@
  
 int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size)
 {
+	uid_t euid;
+	gid_t egid;
 	int id, err;
 
 	if (size > IPCMNI)
@@ -280,8 +282,9 @@
 
 	ids->in_use++;
 
-	new->cuid = new->uid = current->euid;
-	new->gid = new->cgid = current->egid;
+	current_euid_egid(&euid, &egid);
+	new->cuid = new->uid = euid;
+	new->gid = new->cgid = egid;
 
 	new->seq = ids->seq++;
 	if(ids->seq > ids->seq_max)
@@ -620,13 +623,15 @@
  
 int ipcperms (struct kern_ipc_perm *ipcp, short flag)
 {	/* flag will most probably be 0 or S_...UGO from <linux/stat.h> */
+	uid_t euid = current_euid();
 	int requested_mode, granted_mode, err;
 
 	if (unlikely((err = audit_ipc_obj(ipcp))))
 		return err;
 	requested_mode = (flag >> 6) | (flag >> 3) | flag;
 	granted_mode = ipcp->mode;
-	if (current->euid == ipcp->cuid || current->euid == ipcp->uid)
+	if (euid == ipcp->cuid ||
+	    euid == ipcp->uid)
 		granted_mode >>= 6;
 	else if (in_group_p(ipcp->cgid) || in_group_p(ipcp->gid))
 		granted_mode >>= 3;
@@ -788,6 +793,7 @@
 				      struct ipc64_perm *perm, int extra_perm)
 {
 	struct kern_ipc_perm *ipcp;
+	uid_t euid;
 	int err;
 
 	down_write(&ids->rw_mutex);
@@ -807,8 +813,10 @@
 		if (err)
 			goto out_unlock;
 	}
-	if (current->euid == ipcp->cuid ||
-	    current->euid == ipcp->uid || capable(CAP_SYS_ADMIN))
+
+	euid = current_euid();
+	if (euid == ipcp->cuid ||
+	    euid == ipcp->uid  || capable(CAP_SYS_ADMIN))
 		return ipcp;
 
 	err = -EPERM;
diff --git a/kernel/Makefile b/kernel/Makefile
index 19fad00..b1e6b66 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -9,7 +9,7 @@
 	    rcupdate.o extable.o params.o posix-timers.o \
 	    kthread.o wait.o kfifo.o sys_ni.o posix-cpu-timers.o mutex.o \
 	    hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.o \
-	    notifier.o ksysfs.o pm_qos_params.o sched_clock.o
+	    notifier.o ksysfs.o pm_qos_params.o sched_clock.o cred.o
 
 ifdef CONFIG_FUNCTION_TRACER
 # Do not trace debug files and internal ftrace files
diff --git a/kernel/acct.c b/kernel/acct.c
index f6006a6..d57b7cb 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -530,15 +530,14 @@
 	do_div(elapsed, AHZ);
 	ac.ac_btime = get_seconds() - elapsed;
 	/* we really need to bite the bullet and change layout */
-	ac.ac_uid = current->uid;
-	ac.ac_gid = current->gid;
+	current_uid_gid(&ac.ac_uid, &ac.ac_gid);
 #if ACCT_VERSION==2
 	ac.ac_ahz = AHZ;
 #endif
 #if ACCT_VERSION==1 || ACCT_VERSION==2
 	/* backward-compatible 16 bit fields */
-	ac.ac_uid16 = current->uid;
-	ac.ac_gid16 = current->gid;
+	ac.ac_uid16 = ac.ac_uid;
+	ac.ac_gid16 = ac.ac_gid;
 #endif
 #if ACCT_VERSION==3
 	ac.ac_pid = task_tgid_nr_ns(current, ns);
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index cf5bc2f..bc1e2d8 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -65,6 +65,7 @@
 #include <linux/highmem.h>
 #include <linux/syscalls.h>
 #include <linux/inotify.h>
+#include <linux/capability.h>
 
 #include "audit.h"
 
@@ -84,6 +85,15 @@
 /* determines whether we collect data for signals sent */
 int audit_signals;
 
+struct audit_cap_data {
+	kernel_cap_t		permitted;
+	kernel_cap_t		inheritable;
+	union {
+		unsigned int	fE;		/* effective bit of a file capability */
+		kernel_cap_t	effective;	/* effective set of a process */
+	};
+};
+
 /* When fs/namei.c:getname() is called, we store the pointer in name and
  * we don't let putname() free it (instead we free all of the saved
  * pointers at syscall exit time).
@@ -100,6 +110,8 @@
 	gid_t		gid;
 	dev_t		rdev;
 	u32		osid;
+	struct audit_cap_data fcap;
+	unsigned int	fcap_ver;
 };
 
 struct audit_aux_data {
@@ -184,6 +196,20 @@
 	int			pid_count;
 };
 
+struct audit_aux_data_bprm_fcaps {
+	struct audit_aux_data	d;
+	struct audit_cap_data	fcap;
+	unsigned int		fcap_ver;
+	struct audit_cap_data	old_pcap;
+	struct audit_cap_data	new_pcap;
+};
+
+struct audit_aux_data_capset {
+	struct audit_aux_data	d;
+	pid_t			pid;
+	struct audit_cap_data	cap;
+};
+
 struct audit_tree_refs {
 	struct audit_tree_refs *next;
 	struct audit_chunk *c[31];
@@ -421,6 +447,7 @@
 			      struct audit_names *name,
 			      enum audit_state *state)
 {
+	const struct cred *cred = get_task_cred(tsk);
 	int i, j, need_sid = 1;
 	u32 sid;
 
@@ -440,28 +467,28 @@
 			}
 			break;
 		case AUDIT_UID:
-			result = audit_comparator(tsk->uid, f->op, f->val);
+			result = audit_comparator(cred->uid, f->op, f->val);
 			break;
 		case AUDIT_EUID:
-			result = audit_comparator(tsk->euid, f->op, f->val);
+			result = audit_comparator(cred->euid, f->op, f->val);
 			break;
 		case AUDIT_SUID:
-			result = audit_comparator(tsk->suid, f->op, f->val);
+			result = audit_comparator(cred->suid, f->op, f->val);
 			break;
 		case AUDIT_FSUID:
-			result = audit_comparator(tsk->fsuid, f->op, f->val);
+			result = audit_comparator(cred->fsuid, f->op, f->val);
 			break;
 		case AUDIT_GID:
-			result = audit_comparator(tsk->gid, f->op, f->val);
+			result = audit_comparator(cred->gid, f->op, f->val);
 			break;
 		case AUDIT_EGID:
-			result = audit_comparator(tsk->egid, f->op, f->val);
+			result = audit_comparator(cred->egid, f->op, f->val);
 			break;
 		case AUDIT_SGID:
-			result = audit_comparator(tsk->sgid, f->op, f->val);
+			result = audit_comparator(cred->sgid, f->op, f->val);
 			break;
 		case AUDIT_FSGID:
-			result = audit_comparator(tsk->fsgid, f->op, f->val);
+			result = audit_comparator(cred->fsgid, f->op, f->val);
 			break;
 		case AUDIT_PERS:
 			result = audit_comparator(tsk->personality, f->op, f->val);
@@ -615,8 +642,10 @@
 			break;
 		}
 
-		if (!result)
+		if (!result) {
+			put_cred(cred);
 			return 0;
+		}
 	}
 	if (rule->filterkey && ctx)
 		ctx->filterkey = kstrdup(rule->filterkey, GFP_ATOMIC);
@@ -624,6 +653,7 @@
 	case AUDIT_NEVER:    *state = AUDIT_DISABLED;	    break;
 	case AUDIT_ALWAYS:   *state = AUDIT_RECORD_CONTEXT; break;
 	}
+	put_cred(cred);
 	return 1;
 }
 
@@ -1171,8 +1201,38 @@
 	kfree(buf);
 }
 
+static void audit_log_cap(struct audit_buffer *ab, char *prefix, kernel_cap_t *cap)
+{
+	int i;
+
+	audit_log_format(ab, " %s=", prefix);
+	CAP_FOR_EACH_U32(i) {
+		audit_log_format(ab, "%08x", cap->cap[(_KERNEL_CAPABILITY_U32S-1) - i]);
+	}
+}
+
+static void audit_log_fcaps(struct audit_buffer *ab, struct audit_names *name)
+{
+	kernel_cap_t *perm = &name->fcap.permitted;
+	kernel_cap_t *inh = &name->fcap.inheritable;
+	int log = 0;
+
+	if (!cap_isclear(*perm)) {
+		audit_log_cap(ab, "cap_fp", perm);
+		log = 1;
+	}
+	if (!cap_isclear(*inh)) {
+		audit_log_cap(ab, "cap_fi", inh);
+		log = 1;
+	}
+
+	if (log)
+		audit_log_format(ab, " cap_fe=%d cap_fver=%x", name->fcap.fE, name->fcap_ver);
+}
+
 static void audit_log_exit(struct audit_context *context, struct task_struct *tsk)
 {
+	const struct cred *cred;
 	int i, call_panic = 0;
 	struct audit_buffer *ab;
 	struct audit_aux_data *aux;
@@ -1182,14 +1242,15 @@
 	context->pid = tsk->pid;
 	if (!context->ppid)
 		context->ppid = sys_getppid();
-	context->uid = tsk->uid;
-	context->gid = tsk->gid;
-	context->euid = tsk->euid;
-	context->suid = tsk->suid;
-	context->fsuid = tsk->fsuid;
-	context->egid = tsk->egid;
-	context->sgid = tsk->sgid;
-	context->fsgid = tsk->fsgid;
+	cred = current_cred();
+	context->uid   = cred->uid;
+	context->gid   = cred->gid;
+	context->euid  = cred->euid;
+	context->suid  = cred->suid;
+	context->fsuid = cred->fsuid;
+	context->egid  = cred->egid;
+	context->sgid  = cred->sgid;
+	context->fsgid = cred->fsgid;
 	context->personality = tsk->personality;
 
 	ab = audit_log_start(context, GFP_KERNEL, AUDIT_SYSCALL);
@@ -1334,6 +1395,28 @@
 			audit_log_format(ab, "fd0=%d fd1=%d", axs->fd[0], axs->fd[1]);
 			break; }
 
+		case AUDIT_BPRM_FCAPS: {
+			struct audit_aux_data_bprm_fcaps *axs = (void *)aux;
+			audit_log_format(ab, "fver=%x", axs->fcap_ver);
+			audit_log_cap(ab, "fp", &axs->fcap.permitted);
+			audit_log_cap(ab, "fi", &axs->fcap.inheritable);
+			audit_log_format(ab, " fe=%d", axs->fcap.fE);
+			audit_log_cap(ab, "old_pp", &axs->old_pcap.permitted);
+			audit_log_cap(ab, "old_pi", &axs->old_pcap.inheritable);
+			audit_log_cap(ab, "old_pe", &axs->old_pcap.effective);
+			audit_log_cap(ab, "new_pp", &axs->new_pcap.permitted);
+			audit_log_cap(ab, "new_pi", &axs->new_pcap.inheritable);
+			audit_log_cap(ab, "new_pe", &axs->new_pcap.effective);
+			break; }
+
+		case AUDIT_CAPSET: {
+			struct audit_aux_data_capset *axs = (void *)aux;
+			audit_log_format(ab, "pid=%d", axs->pid);
+			audit_log_cap(ab, "cap_pi", &axs->cap.inheritable);
+			audit_log_cap(ab, "cap_pp", &axs->cap.permitted);
+			audit_log_cap(ab, "cap_pe", &axs->cap.effective);
+			break; }
+
 		}
 		audit_log_end(ab);
 	}
@@ -1421,6 +1504,8 @@
 			}
 		}
 
+		audit_log_fcaps(ab, n);
+
 		audit_log_end(ab);
 	}
 
@@ -1787,8 +1872,36 @@
 	return 0;
 }
 
+
+static inline int audit_copy_fcaps(struct audit_names *name, const struct dentry *dentry)
+{
+	struct cpu_vfs_cap_data caps;
+	int rc;
+
+	memset(&name->fcap.permitted, 0, sizeof(kernel_cap_t));
+	memset(&name->fcap.inheritable, 0, sizeof(kernel_cap_t));
+	name->fcap.fE = 0;
+	name->fcap_ver = 0;
+
+	if (!dentry)
+		return 0;
+
+	rc = get_vfs_caps_from_disk(dentry, &caps);
+	if (rc)
+		return rc;
+
+	name->fcap.permitted = caps.permitted;
+	name->fcap.inheritable = caps.inheritable;
+	name->fcap.fE = !!(caps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE);
+	name->fcap_ver = (caps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT;
+
+	return 0;
+}
+
+
 /* Copy inode data into an audit_names. */
-static void audit_copy_inode(struct audit_names *name, const struct inode *inode)
+static void audit_copy_inode(struct audit_names *name, const struct dentry *dentry,
+			     const struct inode *inode)
 {
 	name->ino   = inode->i_ino;
 	name->dev   = inode->i_sb->s_dev;
@@ -1797,6 +1910,7 @@
 	name->gid   = inode->i_gid;
 	name->rdev  = inode->i_rdev;
 	security_inode_getsecid(inode, &name->osid);
+	audit_copy_fcaps(name, dentry);
 }
 
 /**
@@ -1831,7 +1945,7 @@
 		context->names[idx].name = NULL;
 	}
 	handle_path(dentry);
-	audit_copy_inode(&context->names[idx], inode);
+	audit_copy_inode(&context->names[idx], dentry, inode);
 }
 
 /**
@@ -1892,7 +2006,7 @@
 		if (!strcmp(dname, n->name) ||
 		     !audit_compare_dname_path(dname, n->name, &dirlen)) {
 			if (inode)
-				audit_copy_inode(n, inode);
+				audit_copy_inode(n, NULL, inode);
 			else
 				n->ino = (unsigned long)-1;
 			found_child = n->name;
@@ -1906,7 +2020,7 @@
 			return;
 		idx = context->name_count - 1;
 		context->names[idx].name = NULL;
-		audit_copy_inode(&context->names[idx], parent);
+		audit_copy_inode(&context->names[idx], NULL, parent);
 	}
 
 	if (!found_child) {
@@ -1927,7 +2041,7 @@
 		}
 
 		if (inode)
-			audit_copy_inode(&context->names[idx], inode);
+			audit_copy_inode(&context->names[idx], NULL, inode);
 		else
 			context->names[idx].ino = (unsigned long)-1;
 	}
@@ -1978,7 +2092,7 @@
 			audit_log_format(ab, "login pid=%d uid=%u "
 				"old auid=%u new auid=%u"
 				" old ses=%u new ses=%u",
-				task->pid, task->uid,
+				task->pid, task_uid(task),
 				task->loginuid, loginuid,
 				task->sessionid, sessionid);
 			audit_log_end(ab);
@@ -2361,7 +2475,7 @@
 
 	context->target_pid = t->pid;
 	context->target_auid = audit_get_loginuid(t);
-	context->target_uid = t->uid;
+	context->target_uid = task_uid(t);
 	context->target_sessionid = audit_get_sessionid(t);
 	security_task_getsecid(t, &context->target_sid);
 	memcpy(context->target_comm, t->comm, TASK_COMM_LEN);
@@ -2380,6 +2494,7 @@
 	struct audit_aux_data_pids *axp;
 	struct task_struct *tsk = current;
 	struct audit_context *ctx = tsk->audit_context;
+	uid_t uid = current_uid(), t_uid = task_uid(t);
 
 	if (audit_pid && t->tgid == audit_pid) {
 		if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1 || sig == SIGUSR2) {
@@ -2387,7 +2502,7 @@
 			if (tsk->loginuid != -1)
 				audit_sig_uid = tsk->loginuid;
 			else
-				audit_sig_uid = tsk->uid;
+				audit_sig_uid = uid;
 			security_task_getsecid(tsk, &audit_sig_sid);
 		}
 		if (!audit_signals || audit_dummy_context())
@@ -2399,7 +2514,7 @@
 	if (!ctx->target_pid) {
 		ctx->target_pid = t->tgid;
 		ctx->target_auid = audit_get_loginuid(t);
-		ctx->target_uid = t->uid;
+		ctx->target_uid = t_uid;
 		ctx->target_sessionid = audit_get_sessionid(t);
 		security_task_getsecid(t, &ctx->target_sid);
 		memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN);
@@ -2420,7 +2535,7 @@
 
 	axp->target_pid[axp->pid_count] = t->tgid;
 	axp->target_auid[axp->pid_count] = audit_get_loginuid(t);
-	axp->target_uid[axp->pid_count] = t->uid;
+	axp->target_uid[axp->pid_count] = t_uid;
 	axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t);
 	security_task_getsecid(t, &axp->target_sid[axp->pid_count]);
 	memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN);
@@ -2430,6 +2545,86 @@
 }
 
 /**
+ * __audit_log_bprm_fcaps - store information about a loading bprm and relevant fcaps
+ * @bprm: pointer to the bprm being processed
+ * @new: the proposed new credentials
+ * @old: the old credentials
+ *
+ * Simply check if the proc already has the caps given by the file and if not
+ * store the priv escalation info for later auditing at the end of the syscall
+ *
+ * -Eric
+ */
+int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
+			   const struct cred *new, const struct cred *old)
+{
+	struct audit_aux_data_bprm_fcaps *ax;
+	struct audit_context *context = current->audit_context;
+	struct cpu_vfs_cap_data vcaps;
+	struct dentry *dentry;
+
+	ax = kmalloc(sizeof(*ax), GFP_KERNEL);
+	if (!ax)
+		return -ENOMEM;
+
+	ax->d.type = AUDIT_BPRM_FCAPS;
+	ax->d.next = context->aux;
+	context->aux = (void *)ax;
+
+	dentry = dget(bprm->file->f_dentry);
+	get_vfs_caps_from_disk(dentry, &vcaps);
+	dput(dentry);
+
+	ax->fcap.permitted = vcaps.permitted;
+	ax->fcap.inheritable = vcaps.inheritable;
+	ax->fcap.fE = !!(vcaps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE);
+	ax->fcap_ver = (vcaps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT;
+
+	ax->old_pcap.permitted   = old->cap_permitted;
+	ax->old_pcap.inheritable = old->cap_inheritable;
+	ax->old_pcap.effective   = old->cap_effective;
+
+	ax->new_pcap.permitted   = new->cap_permitted;
+	ax->new_pcap.inheritable = new->cap_inheritable;
+	ax->new_pcap.effective   = new->cap_effective;
+	return 0;
+}
+
+/**
+ * __audit_log_capset - store information about the arguments to the capset syscall
+ * @pid: target pid of the capset call
+ * @new: the new credentials
+ * @old: the old (current) credentials
+ *
+ * Record the aguments userspace sent to sys_capset for later printing by the
+ * audit system if applicable
+ */
+int __audit_log_capset(pid_t pid,
+		       const struct cred *new, const struct cred *old)
+{
+	struct audit_aux_data_capset *ax;
+	struct audit_context *context = current->audit_context;
+
+	if (likely(!audit_enabled || !context || context->dummy))
+		return 0;
+
+	ax = kmalloc(sizeof(*ax), GFP_KERNEL);
+	if (!ax)
+		return -ENOMEM;
+
+	ax->d.type = AUDIT_CAPSET;
+	ax->d.next = context->aux;
+	context->aux = (void *)ax;
+
+	ax->pid = pid;
+	ax->cap.effective   = new->cap_effective;
+	ax->cap.inheritable = new->cap_effective;
+	ax->cap.permitted   = new->cap_permitted;
+
+	return 0;
+}
+
+/**
  * audit_core_dumps - record information about processes that end abnormally
  * @signr: signal value
  *
@@ -2440,7 +2635,8 @@
 {
 	struct audit_buffer *ab;
 	u32 sid;
-	uid_t auid = audit_get_loginuid(current);
+	uid_t auid = audit_get_loginuid(current), uid;
+	gid_t gid;
 	unsigned int sessionid = audit_get_sessionid(current);
 
 	if (!audit_enabled)
@@ -2450,8 +2646,9 @@
 		return;
 
 	ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
+	current_uid_gid(&uid, &gid);
 	audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u",
-			auid, current->uid, current->gid, sessionid);
+			 auid, uid, gid, sessionid);
 	security_task_getsecid(current, &sid);
 	if (sid) {
 		char *ctx = NULL;
diff --git a/kernel/capability.c b/kernel/capability.c
index 33e51e7..36b4b4d 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -7,6 +7,7 @@
  * 30 May 2002:	Cleanup, Robert M. Love <rml@tech9.net>
  */
 
+#include <linux/audit.h>
 #include <linux/capability.h>
 #include <linux/mm.h>
 #include <linux/module.h>
@@ -14,12 +15,7 @@
 #include <linux/syscalls.h>
 #include <linux/pid_namespace.h>
 #include <asm/uaccess.h>
-
-/*
- * This lock protects task->cap_* for all tasks including current.
- * Locking rule: acquire this prior to tasklist_lock.
- */
-static DEFINE_SPINLOCK(task_capability_lock);
+#include "cred-internals.h"
 
 /*
  * Leveraged for setting/resetting capabilities
@@ -33,6 +29,17 @@
 EXPORT_SYMBOL(__cap_full_set);
 EXPORT_SYMBOL(__cap_init_eff_set);
 
+#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
+int file_caps_enabled = 1;
+
+static int __init file_caps_disable(char *str)
+{
+	file_caps_enabled = 0;
+	return 1;
+}
+__setup("no_file_caps", file_caps_disable);
+#endif
+
 /*
  * More recent versions of libcap are available from:
  *
@@ -115,167 +122,12 @@
 	return 0;
 }
 
-#ifndef CONFIG_SECURITY_FILE_CAPABILITIES
-
 /*
- * Without filesystem capability support, we nominally support one process
- * setting the capabilities of another
- */
-static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp,
-				     kernel_cap_t *pIp, kernel_cap_t *pPp)
-{
-	struct task_struct *target;
-	int ret;
-
-	spin_lock(&task_capability_lock);
-	read_lock(&tasklist_lock);
-
-	if (pid && pid != task_pid_vnr(current)) {
-		target = find_task_by_vpid(pid);
-		if (!target) {
-			ret = -ESRCH;
-			goto out;
-		}
-	} else
-		target = current;
-
-	ret = security_capget(target, pEp, pIp, pPp);
-
-out:
-	read_unlock(&tasklist_lock);
-	spin_unlock(&task_capability_lock);
-
-	return ret;
-}
-
-/*
- * cap_set_pg - set capabilities for all processes in a given process
- * group.  We call this holding task_capability_lock and tasklist_lock.
- */
-static inline int cap_set_pg(int pgrp_nr, kernel_cap_t *effective,
-			     kernel_cap_t *inheritable,
-			     kernel_cap_t *permitted)
-{
-	struct task_struct *g, *target;
-	int ret = -EPERM;
-	int found = 0;
-	struct pid *pgrp;
-
-	spin_lock(&task_capability_lock);
-	read_lock(&tasklist_lock);
-
-	pgrp = find_vpid(pgrp_nr);
-	do_each_pid_task(pgrp, PIDTYPE_PGID, g) {
-		target = g;
-		while_each_thread(g, target) {
-			if (!security_capset_check(target, effective,
-						   inheritable, permitted)) {
-				security_capset_set(target, effective,
-						    inheritable, permitted);
-				ret = 0;
-			}
-			found = 1;
-		}
-	} while_each_pid_task(pgrp, PIDTYPE_PGID, g);
-
-	read_unlock(&tasklist_lock);
-	spin_unlock(&task_capability_lock);
-
-	if (!found)
-		ret = 0;
-	return ret;
-}
-
-/*
- * cap_set_all - set capabilities for all processes other than init
- * and self.  We call this holding task_capability_lock and tasklist_lock.
- */
-static inline int cap_set_all(kernel_cap_t *effective,
-			      kernel_cap_t *inheritable,
-			      kernel_cap_t *permitted)
-{
-	struct task_struct *g, *target;
-	int ret = -EPERM;
-	int found = 0;
-
-	spin_lock(&task_capability_lock);
-	read_lock(&tasklist_lock);
-
-	do_each_thread(g, target) {
-		if (target == current
-		    || is_container_init(target->group_leader))
-			continue;
-		found = 1;
-		if (security_capset_check(target, effective, inheritable,
-					  permitted))
-			continue;
-		ret = 0;
-		security_capset_set(target, effective, inheritable, permitted);
-	} while_each_thread(g, target);
-
-	read_unlock(&tasklist_lock);
-	spin_unlock(&task_capability_lock);
-
-	if (!found)
-		ret = 0;
-
-	return ret;
-}
-
-/*
- * Given the target pid does not refer to the current process we
- * need more elaborate support... (This support is not present when
- * filesystem capabilities are configured.)
- */
-static inline int do_sys_capset_other_tasks(pid_t pid, kernel_cap_t *effective,
-					    kernel_cap_t *inheritable,
-					    kernel_cap_t *permitted)
-{
-	struct task_struct *target;
-	int ret;
-
-	if (!capable(CAP_SETPCAP))
-		return -EPERM;
-
-	if (pid == -1)	          /* all procs other than current and init */
-		return cap_set_all(effective, inheritable, permitted);
-
-	else if (pid < 0)                    /* all procs in process group */
-		return cap_set_pg(-pid, effective, inheritable, permitted);
-
-	/* target != current */
-	spin_lock(&task_capability_lock);
-	read_lock(&tasklist_lock);
-
-	target = find_task_by_vpid(pid);
-	if (!target)
-		ret = -ESRCH;
-	else {
-		ret = security_capset_check(target, effective, inheritable,
-					    permitted);
-
-		/* having verified that the proposed changes are legal,
-		   we now put them into effect. */
-		if (!ret)
-			security_capset_set(target, effective, inheritable,
-					    permitted);
-	}
-
-	read_unlock(&tasklist_lock);
-	spin_unlock(&task_capability_lock);
-
-	return ret;
-}
-
-#else /* ie., def CONFIG_SECURITY_FILE_CAPABILITIES */
-
-/*
- * If we have configured with filesystem capability support, then the
- * only thing that can change the capabilities of the current process
- * is the current process. As such, we can't be in this code at the
- * same time as we are in the process of setting capabilities in this
- * process. The net result is that we can limit our use of locks to
- * when we are reading the caps of another process.
+ * The only thing that can change the capabilities of the current
+ * process is the current process. As such, we can't be in this code
+ * at the same time as we are in the process of setting capabilities
+ * in this process. The net result is that we can limit our use of
+ * locks to when we are reading the caps of another process.
  */
 static inline int cap_get_target_pid(pid_t pid, kernel_cap_t *pEp,
 				     kernel_cap_t *pIp, kernel_cap_t *pPp)
@@ -285,7 +137,6 @@
 	if (pid && (pid != task_pid_vnr(current))) {
 		struct task_struct *target;
 
-		spin_lock(&task_capability_lock);
 		read_lock(&tasklist_lock);
 
 		target = find_task_by_vpid(pid);
@@ -295,50 +146,12 @@
 			ret = security_capget(target, pEp, pIp, pPp);
 
 		read_unlock(&tasklist_lock);
-		spin_unlock(&task_capability_lock);
 	} else
 		ret = security_capget(current, pEp, pIp, pPp);
 
 	return ret;
 }
 
-/*
- * With filesystem capability support configured, the kernel does not
- * permit the changing of capabilities in one process by another
- * process. (CAP_SETPCAP has much less broad semantics when configured
- * this way.)
- */
-static inline int do_sys_capset_other_tasks(pid_t pid,
-					    kernel_cap_t *effective,
-					    kernel_cap_t *inheritable,
-					    kernel_cap_t *permitted)
-{
-	return -EPERM;
-}
-
-#endif /* ie., ndef CONFIG_SECURITY_FILE_CAPABILITIES */
-
-/*
- * Atomically modify the effective capabilities returning the original
- * value. No permission check is performed here - it is assumed that the
- * caller is permitted to set the desired effective capabilities.
- */
-kernel_cap_t cap_set_effective(const kernel_cap_t pE_new)
-{
-	kernel_cap_t pE_old;
-
-	spin_lock(&task_capability_lock);
-
-	pE_old = current->cap_effective;
-	current->cap_effective = pE_new;
-
-	spin_unlock(&task_capability_lock);
-
-	return pE_old;
-}
-
-EXPORT_SYMBOL(cap_set_effective);
-
 /**
  * sys_capget - get the capabilities of a given process.
  * @header: pointer to struct that contains capability version and
@@ -366,7 +179,6 @@
 		return -EINVAL;
 
 	ret = cap_get_target_pid(pid, &pE, &pI, &pP);
-
 	if (!ret) {
 		struct __user_cap_data_struct kdata[_KERNEL_CAPABILITY_U32S];
 		unsigned i;
@@ -412,16 +224,14 @@
  * @data: pointer to struct that contains the effective, permitted,
  *	and inheritable capabilities
  *
- * Set capabilities for a given process, all processes, or all
- * processes in a given process group.
+ * Set capabilities for the current process only.  The ability to any other
+ * process(es) has been deprecated and removed.
  *
  * The restrictions on setting capabilities are specified as:
  *
- * [pid is for the 'target' task.  'current' is the calling task.]
- *
- * I: any raised capabilities must be a subset of the (old current) permitted
- * P: any raised capabilities must be a subset of the (old current) permitted
- * E: must be set to a subset of (new target) permitted
+ * I: any raised capabilities must be a subset of the old permitted
+ * P: any raised capabilities must be a subset of the old permitted
+ * E: must be set to a subset of new permitted
  *
  * Returns 0 on success and < 0 on error.
  */
@@ -430,6 +240,7 @@
 	struct __user_cap_data_struct kdata[_KERNEL_CAPABILITY_U32S];
 	unsigned i, tocopy;
 	kernel_cap_t inheritable, permitted, effective;
+	struct cred *new;
 	int ret;
 	pid_t pid;
 
@@ -440,10 +251,13 @@
 	if (get_user(pid, &header->pid))
 		return -EFAULT;
 
-	if (copy_from_user(&kdata, data, tocopy
-			   * sizeof(struct __user_cap_data_struct))) {
+	/* may only affect current now */
+	if (pid != 0 && pid != task_pid_vnr(current))
+		return -EPERM;
+
+	if (copy_from_user(&kdata, data,
+			   tocopy * sizeof(struct __user_cap_data_struct)))
 		return -EFAULT;
-	}
 
 	for (i = 0; i < tocopy; i++) {
 		effective.cap[i] = kdata[i].effective;
@@ -457,32 +271,23 @@
 		i++;
 	}
 
-	if (pid && (pid != task_pid_vnr(current)))
-		ret = do_sys_capset_other_tasks(pid, &effective, &inheritable,
-						&permitted);
-	else {
-		/*
-		 * This lock is required even when filesystem
-		 * capability support is configured - it protects the
-		 * sys_capget() call from returning incorrect data in
-		 * the case that the targeted process is not the
-		 * current one.
-		 */
-		spin_lock(&task_capability_lock);
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
 
-		ret = security_capset_check(current, &effective, &inheritable,
-					    &permitted);
-		/*
-		 * Having verified that the proposed changes are
-		 * legal, we now put them into effect.
-		 */
-		if (!ret)
-			security_capset_set(current, &effective, &inheritable,
-					    &permitted);
-		spin_unlock(&task_capability_lock);
-	}
+	ret = security_capset(new, current_cred(),
+			      &effective, &inheritable, &permitted);
+	if (ret < 0)
+		goto error;
 
+	ret = audit_log_capset(pid, new, current_cred());
+	if (ret < 0)
+		return ret;
 
+	return commit_creds(new);
+
+error:
+	abort_creds(new);
 	return ret;
 }
 
@@ -498,6 +303,11 @@
  */
 int capable(int cap)
 {
+	if (unlikely(!cap_valid(cap))) {
+		printk(KERN_CRIT "capable() called with invalid cap=%u\n", cap);
+		BUG();
+	}
+
 	if (has_capability(current, cap)) {
 		current->flags |= PF_SUPERPRIV;
 		return 1;
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index fe00b3b..dee025f 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -571,8 +571,8 @@
 
 	if (inode) {
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_blocks = 0;
 		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 		inode->i_mapping->backing_dev_info = &cgroup_backing_dev_info;
@@ -1279,6 +1279,7 @@
 static int attach_task_by_pid(struct cgroup *cgrp, u64 pid)
 {
 	struct task_struct *tsk;
+	const struct cred *cred = current_cred(), *tcred;
 	int ret;
 
 	if (pid) {
@@ -1288,14 +1289,16 @@
 			rcu_read_unlock();
 			return -ESRCH;
 		}
-		get_task_struct(tsk);
-		rcu_read_unlock();
 
-		if ((current->euid) && (current->euid != tsk->uid)
-		    && (current->euid != tsk->suid)) {
-			put_task_struct(tsk);
+		tcred = __task_cred(tsk);
+		if (cred->euid &&
+		    cred->euid != tcred->uid &&
+		    cred->euid != tcred->suid) {
+			rcu_read_unlock();
 			return -EACCES;
 		}
+		get_task_struct(tsk);
+		rcu_read_unlock();
 	} else {
 		tsk = current;
 		get_task_struct(tsk);
diff --git a/kernel/cred-internals.h b/kernel/cred-internals.h
new file mode 100644
index 0000000..2dc4fc2
--- /dev/null
+++ b/kernel/cred-internals.h
@@ -0,0 +1,21 @@
+/* Internal credentials stuff
+ *
+ * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+/*
+ * user.c
+ */
+static inline void sched_switch_user(struct task_struct *p)
+{
+#ifdef CONFIG_USER_SCHED
+	sched_move_task(p);
+#endif	/* CONFIG_USER_SCHED */
+}
+
diff --git a/kernel/cred.c b/kernel/cred.c
new file mode 100644
index 0000000..ff7bc07
--- /dev/null
+++ b/kernel/cred.c
@@ -0,0 +1,588 @@
+/* Task credentials management - see Documentation/credentials.txt
+ *
+ * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/module.h>
+#include <linux/cred.h>
+#include <linux/sched.h>
+#include <linux/key.h>
+#include <linux/keyctl.h>
+#include <linux/init_task.h>
+#include <linux/security.h>
+#include <linux/cn_proc.h>
+#include "cred-internals.h"
+
+static struct kmem_cache *cred_jar;
+
+/*
+ * The common credentials for the initial task's thread group
+ */
+#ifdef CONFIG_KEYS
+static struct thread_group_cred init_tgcred = {
+	.usage	= ATOMIC_INIT(2),
+	.tgid	= 0,
+	.lock	= SPIN_LOCK_UNLOCKED,
+};
+#endif
+
+/*
+ * The initial credentials for the initial task
+ */
+struct cred init_cred = {
+	.usage			= ATOMIC_INIT(4),
+	.securebits		= SECUREBITS_DEFAULT,
+	.cap_inheritable	= CAP_INIT_INH_SET,
+	.cap_permitted		= CAP_FULL_SET,
+	.cap_effective		= CAP_INIT_EFF_SET,
+	.cap_bset		= CAP_INIT_BSET,
+	.user			= INIT_USER,
+	.group_info		= &init_groups,
+#ifdef CONFIG_KEYS
+	.tgcred			= &init_tgcred,
+#endif
+};
+
+/*
+ * Dispose of the shared task group credentials
+ */
+#ifdef CONFIG_KEYS
+static void release_tgcred_rcu(struct rcu_head *rcu)
+{
+	struct thread_group_cred *tgcred =
+		container_of(rcu, struct thread_group_cred, rcu);
+
+	BUG_ON(atomic_read(&tgcred->usage) != 0);
+
+	key_put(tgcred->session_keyring);
+	key_put(tgcred->process_keyring);
+	kfree(tgcred);
+}
+#endif
+
+/*
+ * Release a set of thread group credentials.
+ */
+static void release_tgcred(struct cred *cred)
+{
+#ifdef CONFIG_KEYS
+	struct thread_group_cred *tgcred = cred->tgcred;
+
+	if (atomic_dec_and_test(&tgcred->usage))
+		call_rcu(&tgcred->rcu, release_tgcred_rcu);
+#endif
+}
+
+/*
+ * The RCU callback to actually dispose of a set of credentials
+ */
+static void put_cred_rcu(struct rcu_head *rcu)
+{
+	struct cred *cred = container_of(rcu, struct cred, rcu);
+
+	if (atomic_read(&cred->usage) != 0)
+		panic("CRED: put_cred_rcu() sees %p with usage %d\n",
+		      cred, atomic_read(&cred->usage));
+
+	security_cred_free(cred);
+	key_put(cred->thread_keyring);
+	key_put(cred->request_key_auth);
+	release_tgcred(cred);
+	put_group_info(cred->group_info);
+	free_uid(cred->user);
+	kmem_cache_free(cred_jar, cred);
+}
+
+/**
+ * __put_cred - Destroy a set of credentials
+ * @cred: The record to release
+ *
+ * Destroy a set of credentials on which no references remain.
+ */
+void __put_cred(struct cred *cred)
+{
+	BUG_ON(atomic_read(&cred->usage) != 0);
+
+	call_rcu(&cred->rcu, put_cred_rcu);
+}
+EXPORT_SYMBOL(__put_cred);
+
+/**
+ * prepare_creds - Prepare a new set of credentials for modification
+ *
+ * Prepare a new set of task credentials for modification.  A task's creds
+ * shouldn't generally be modified directly, therefore this function is used to
+ * prepare a new copy, which the caller then modifies and then commits by
+ * calling commit_creds().
+ *
+ * Preparation involves making a copy of the objective creds for modification.
+ *
+ * Returns a pointer to the new creds-to-be if successful, NULL otherwise.
+ *
+ * Call commit_creds() or abort_creds() to clean up.
+ */
+struct cred *prepare_creds(void)
+{
+	struct task_struct *task = current;
+	const struct cred *old;
+	struct cred *new;
+
+	BUG_ON(atomic_read(&task->real_cred->usage) < 1);
+
+	new = kmem_cache_alloc(cred_jar, GFP_KERNEL);
+	if (!new)
+		return NULL;
+
+	old = task->cred;
+	memcpy(new, old, sizeof(struct cred));
+
+	atomic_set(&new->usage, 1);
+	get_group_info(new->group_info);
+	get_uid(new->user);
+
+#ifdef CONFIG_KEYS
+	key_get(new->thread_keyring);
+	key_get(new->request_key_auth);
+	atomic_inc(&new->tgcred->usage);
+#endif
+
+#ifdef CONFIG_SECURITY
+	new->security = NULL;
+#endif
+
+	if (security_prepare_creds(new, old, GFP_KERNEL) < 0)
+		goto error;
+	return new;
+
+error:
+	abort_creds(new);
+	return NULL;
+}
+EXPORT_SYMBOL(prepare_creds);
+
+/*
+ * Prepare credentials for current to perform an execve()
+ * - The caller must hold current->cred_exec_mutex
+ */
+struct cred *prepare_exec_creds(void)
+{
+	struct thread_group_cred *tgcred = NULL;
+	struct cred *new;
+
+#ifdef CONFIG_KEYS
+	tgcred = kmalloc(sizeof(*tgcred), GFP_KERNEL);
+	if (!tgcred)
+		return NULL;
+#endif
+
+	new = prepare_creds();
+	if (!new) {
+		kfree(tgcred);
+		return new;
+	}
+
+#ifdef CONFIG_KEYS
+	/* newly exec'd tasks don't get a thread keyring */
+	key_put(new->thread_keyring);
+	new->thread_keyring = NULL;
+
+	/* create a new per-thread-group creds for all this set of threads to
+	 * share */
+	memcpy(tgcred, new->tgcred, sizeof(struct thread_group_cred));
+
+	atomic_set(&tgcred->usage, 1);
+	spin_lock_init(&tgcred->lock);
+
+	/* inherit the session keyring; new process keyring */
+	key_get(tgcred->session_keyring);
+	tgcred->process_keyring = NULL;
+
+	release_tgcred(new);
+	new->tgcred = tgcred;
+#endif
+
+	return new;
+}
+
+/*
+ * prepare new credentials for the usermode helper dispatcher
+ */
+struct cred *prepare_usermodehelper_creds(void)
+{
+#ifdef CONFIG_KEYS
+	struct thread_group_cred *tgcred = NULL;
+#endif
+	struct cred *new;
+
+#ifdef CONFIG_KEYS
+	tgcred = kzalloc(sizeof(*new->tgcred), GFP_ATOMIC);
+	if (!tgcred)
+		return NULL;
+#endif
+
+	new = kmem_cache_alloc(cred_jar, GFP_ATOMIC);
+	if (!new)
+		return NULL;
+
+	memcpy(new, &init_cred, sizeof(struct cred));
+
+	atomic_set(&new->usage, 1);
+	get_group_info(new->group_info);
+	get_uid(new->user);
+
+#ifdef CONFIG_KEYS
+	new->thread_keyring = NULL;
+	new->request_key_auth = NULL;
+	new->jit_keyring = KEY_REQKEY_DEFL_DEFAULT;
+
+	atomic_set(&tgcred->usage, 1);
+	spin_lock_init(&tgcred->lock);
+	new->tgcred = tgcred;
+#endif
+
+#ifdef CONFIG_SECURITY
+	new->security = NULL;
+#endif
+	if (security_prepare_creds(new, &init_cred, GFP_ATOMIC) < 0)
+		goto error;
+
+	BUG_ON(atomic_read(&new->usage) != 1);
+	return new;
+
+error:
+	put_cred(new);
+	return NULL;
+}
+
+/*
+ * Copy credentials for the new process created by fork()
+ *
+ * We share if we can, but under some circumstances we have to generate a new
+ * set.
+ *
+ * The new process gets the current process's subjective credentials as its
+ * objective and subjective credentials
+ */
+int copy_creds(struct task_struct *p, unsigned long clone_flags)
+{
+#ifdef CONFIG_KEYS
+	struct thread_group_cred *tgcred;
+#endif
+	struct cred *new;
+	int ret;
+
+	mutex_init(&p->cred_exec_mutex);
+
+	if (
+#ifdef CONFIG_KEYS
+		!p->cred->thread_keyring &&
+#endif
+		clone_flags & CLONE_THREAD
+	    ) {
+		p->real_cred = get_cred(p->cred);
+		get_cred(p->cred);
+		atomic_inc(&p->cred->user->processes);
+		return 0;
+	}
+
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+
+	if (clone_flags & CLONE_NEWUSER) {
+		ret = create_user_ns(new);
+		if (ret < 0)
+			goto error_put;
+	}
+
+#ifdef CONFIG_KEYS
+	/* new threads get their own thread keyrings if their parent already
+	 * had one */
+	if (new->thread_keyring) {
+		key_put(new->thread_keyring);
+		new->thread_keyring = NULL;
+		if (clone_flags & CLONE_THREAD)
+			install_thread_keyring_to_cred(new);
+	}
+
+	/* we share the process and session keyrings between all the threads in
+	 * a process - this is slightly icky as we violate COW credentials a
+	 * bit */
+	if (!(clone_flags & CLONE_THREAD)) {
+		tgcred = kmalloc(sizeof(*tgcred), GFP_KERNEL);
+		if (!tgcred) {
+			ret = -ENOMEM;
+			goto error_put;
+		}
+		atomic_set(&tgcred->usage, 1);
+		spin_lock_init(&tgcred->lock);
+		tgcred->process_keyring = NULL;
+		tgcred->session_keyring = key_get(new->tgcred->session_keyring);
+
+		release_tgcred(new);
+		new->tgcred = tgcred;
+	}
+#endif
+
+	atomic_inc(&new->user->processes);
+	p->cred = p->real_cred = get_cred(new);
+	return 0;
+
+error_put:
+	put_cred(new);
+	return ret;
+}
+
+/**
+ * commit_creds - Install new credentials upon the current task
+ * @new: The credentials to be assigned
+ *
+ * Install a new set of credentials to the current task, using RCU to replace
+ * the old set.  Both the objective and the subjective credentials pointers are
+ * updated.  This function may not be called if the subjective credentials are
+ * in an overridden state.
+ *
+ * This function eats the caller's reference to the new credentials.
+ *
+ * Always returns 0 thus allowing this function to be tail-called at the end
+ * of, say, sys_setgid().
+ */
+int commit_creds(struct cred *new)
+{
+	struct task_struct *task = current;
+	const struct cred *old;
+
+	BUG_ON(task->cred != task->real_cred);
+	BUG_ON(atomic_read(&task->real_cred->usage) < 2);
+	BUG_ON(atomic_read(&new->usage) < 1);
+
+	old = task->real_cred;
+	security_commit_creds(new, old);
+
+	get_cred(new); /* we will require a ref for the subj creds too */
+
+	/* dumpability changes */
+	if (old->euid != new->euid ||
+	    old->egid != new->egid ||
+	    old->fsuid != new->fsuid ||
+	    old->fsgid != new->fsgid ||
+	    !cap_issubset(new->cap_permitted, old->cap_permitted)) {
+		set_dumpable(task->mm, suid_dumpable);
+		task->pdeath_signal = 0;
+		smp_wmb();
+	}
+
+	/* alter the thread keyring */
+	if (new->fsuid != old->fsuid)
+		key_fsuid_changed(task);
+	if (new->fsgid != old->fsgid)
+		key_fsgid_changed(task);
+
+	/* do it
+	 * - What if a process setreuid()'s and this brings the
+	 *   new uid over his NPROC rlimit?  We can check this now
+	 *   cheaply with the new uid cache, so if it matters
+	 *   we should be checking for it.  -DaveM
+	 */
+	if (new->user != old->user)
+		atomic_inc(&new->user->processes);
+	rcu_assign_pointer(task->real_cred, new);
+	rcu_assign_pointer(task->cred, new);
+	if (new->user != old->user)
+		atomic_dec(&old->user->processes);
+
+	sched_switch_user(task);
+
+	/* send notifications */
+	if (new->uid   != old->uid  ||
+	    new->euid  != old->euid ||
+	    new->suid  != old->suid ||
+	    new->fsuid != old->fsuid)
+		proc_id_connector(task, PROC_EVENT_UID);
+
+	if (new->gid   != old->gid  ||
+	    new->egid  != old->egid ||
+	    new->sgid  != old->sgid ||
+	    new->fsgid != old->fsgid)
+		proc_id_connector(task, PROC_EVENT_GID);
+
+	/* release the old obj and subj refs both */
+	put_cred(old);
+	put_cred(old);
+	return 0;
+}
+EXPORT_SYMBOL(commit_creds);
+
+/**
+ * abort_creds - Discard a set of credentials and unlock the current task
+ * @new: The credentials that were going to be applied
+ *
+ * Discard a set of credentials that were under construction and unlock the
+ * current task.
+ */
+void abort_creds(struct cred *new)
+{
+	BUG_ON(atomic_read(&new->usage) < 1);
+	put_cred(new);
+}
+EXPORT_SYMBOL(abort_creds);
+
+/**
+ * override_creds - Override the current process's subjective credentials
+ * @new: The credentials to be assigned
+ *
+ * Install a set of temporary override subjective credentials on the current
+ * process, returning the old set for later reversion.
+ */
+const struct cred *override_creds(const struct cred *new)
+{
+	const struct cred *old = current->cred;
+
+	rcu_assign_pointer(current->cred, get_cred(new));
+	return old;
+}
+EXPORT_SYMBOL(override_creds);
+
+/**
+ * revert_creds - Revert a temporary subjective credentials override
+ * @old: The credentials to be restored
+ *
+ * Revert a temporary set of override subjective credentials to an old set,
+ * discarding the override set.
+ */
+void revert_creds(const struct cred *old)
+{
+	const struct cred *override = current->cred;
+
+	rcu_assign_pointer(current->cred, old);
+	put_cred(override);
+}
+EXPORT_SYMBOL(revert_creds);
+
+/*
+ * initialise the credentials stuff
+ */
+void __init cred_init(void)
+{
+	/* allocate a slab in which we can store credentials */
+	cred_jar = kmem_cache_create("cred_jar", sizeof(struct cred),
+				     0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
+}
+
+/**
+ * prepare_kernel_cred - Prepare a set of credentials for a kernel service
+ * @daemon: A userspace daemon to be used as a reference
+ *
+ * Prepare a set of credentials for a kernel service.  This can then be used to
+ * override a task's own credentials so that work can be done on behalf of that
+ * task that requires a different subjective context.
+ *
+ * @daemon is used to provide a base for the security record, but can be NULL.
+ * If @daemon is supplied, then the security data will be derived from that;
+ * otherwise they'll be set to 0 and no groups, full capabilities and no keys.
+ *
+ * The caller may change these controls afterwards if desired.
+ *
+ * Returns the new credentials or NULL if out of memory.
+ *
+ * Does not take, and does not return holding current->cred_replace_mutex.
+ */
+struct cred *prepare_kernel_cred(struct task_struct *daemon)
+{
+	const struct cred *old;
+	struct cred *new;
+
+	new = kmem_cache_alloc(cred_jar, GFP_KERNEL);
+	if (!new)
+		return NULL;
+
+	if (daemon)
+		old = get_task_cred(daemon);
+	else
+		old = get_cred(&init_cred);
+
+	get_uid(new->user);
+	get_group_info(new->group_info);
+
+#ifdef CONFIG_KEYS
+	atomic_inc(&init_tgcred.usage);
+	new->tgcred = &init_tgcred;
+	new->request_key_auth = NULL;
+	new->thread_keyring = NULL;
+	new->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;
+#endif
+
+#ifdef CONFIG_SECURITY
+	new->security = NULL;
+#endif
+	if (security_prepare_creds(new, old, GFP_KERNEL) < 0)
+		goto error;
+
+	atomic_set(&new->usage, 1);
+	put_cred(old);
+	return new;
+
+error:
+	put_cred(new);
+	return NULL;
+}
+EXPORT_SYMBOL(prepare_kernel_cred);
+
+/**
+ * set_security_override - Set the security ID in a set of credentials
+ * @new: The credentials to alter
+ * @secid: The LSM security ID to set
+ *
+ * Set the LSM security ID in a set of credentials so that the subjective
+ * security is overridden when an alternative set of credentials is used.
+ */
+int set_security_override(struct cred *new, u32 secid)
+{
+	return security_kernel_act_as(new, secid);
+}
+EXPORT_SYMBOL(set_security_override);
+
+/**
+ * set_security_override_from_ctx - Set the security ID in a set of credentials
+ * @new: The credentials to alter
+ * @secctx: The LSM security context to generate the security ID from.
+ *
+ * Set the LSM security ID in a set of credentials so that the subjective
+ * security is overridden when an alternative set of credentials is used.  The
+ * security ID is specified in string form as a security context to be
+ * interpreted by the LSM.
+ */
+int set_security_override_from_ctx(struct cred *new, const char *secctx)
+{
+	u32 secid;
+	int ret;
+
+	ret = security_secctx_to_secid(secctx, strlen(secctx), &secid);
+	if (ret < 0)
+		return ret;
+
+	return set_security_override(new, secid);
+}
+EXPORT_SYMBOL(set_security_override_from_ctx);
+
+/**
+ * set_create_files_as - Set the LSM file create context in a set of credentials
+ * @new: The credentials to alter
+ * @inode: The inode to take the context from
+ *
+ * Change the LSM file creation context in a set of credentials to be the same
+ * as the object context of the specified inode, so that the new inodes have
+ * the same MAC context as that inode.
+ */
+int set_create_files_as(struct cred *new, struct inode *inode)
+{
+	new->fsuid = inode->i_uid;
+	new->fsgid = inode->i_gid;
+	return security_kernel_create_files_as(new, inode);
+}
+EXPORT_SYMBOL(set_create_files_as);
diff --git a/kernel/exit.c b/kernel/exit.c
index 2d8be7e..ccb8716 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -46,12 +46,14 @@
 #include <linux/blkdev.h>
 #include <linux/task_io_accounting_ops.h>
 #include <linux/tracehook.h>
+#include <linux/init_task.h>
 #include <trace/sched.h>
 
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
+#include "cred-internals.h"
 
 static void exit_mm(struct task_struct * tsk);
 
@@ -164,7 +166,10 @@
 	int zap_leader;
 repeat:
 	tracehook_prepare_release_task(p);
-	atomic_dec(&p->user->processes);
+	/* don't need to get the RCU readlock here - the process is dead and
+	 * can't be modifying its own credentials */
+	atomic_dec(&__task_cred(p)->user->processes);
+
 	proc_flush_task(p);
 	write_lock_irq(&tasklist_lock);
 	tracehook_finish_release_task(p);
@@ -339,12 +344,12 @@
 	/* cpus_allowed? */
 	/* rt_priority? */
 	/* signals? */
-	security_task_reparent_to_init(current);
 	memcpy(current->signal->rlim, init_task.signal->rlim,
 	       sizeof(current->signal->rlim));
-	atomic_inc(&(INIT_USER->__count));
+
+	atomic_inc(&init_cred.usage);
+	commit_creds(&init_cred);
 	write_unlock_irq(&tasklist_lock);
-	switch_uid(INIT_USER);
 }
 
 void __set_special_pids(struct pid *pid)
@@ -1078,7 +1083,6 @@
 	check_stack_usage();
 	exit_thread();
 	cgroup_exit(tsk, 1);
-	exit_keys(tsk);
 
 	if (group_dead && tsk->signal->leader)
 		disassociate_ctty(1);
@@ -1263,12 +1267,12 @@
 	unsigned long state;
 	int retval, status, traced;
 	pid_t pid = task_pid_vnr(p);
+	uid_t uid = __task_cred(p)->uid;
 
 	if (!likely(options & WEXITED))
 		return 0;
 
 	if (unlikely(options & WNOWAIT)) {
-		uid_t uid = p->uid;
 		int exit_code = p->exit_code;
 		int why, status;
 
@@ -1389,7 +1393,7 @@
 	if (!retval && infop)
 		retval = put_user(pid, &infop->si_pid);
 	if (!retval && infop)
-		retval = put_user(p->uid, &infop->si_uid);
+		retval = put_user(uid, &infop->si_uid);
 	if (!retval)
 		retval = pid;
 
@@ -1454,7 +1458,8 @@
 	if (!unlikely(options & WNOWAIT))
 		p->exit_code = 0;
 
-	uid = p->uid;
+	/* don't need the RCU readlock here as we're holding a spinlock */
+	uid = __task_cred(p)->uid;
 unlock_sig:
 	spin_unlock_irq(&p->sighand->siglock);
 	if (!exit_code)
@@ -1528,10 +1533,10 @@
 	}
 	if (!unlikely(options & WNOWAIT))
 		p->signal->flags &= ~SIGNAL_STOP_CONTINUED;
+	uid = __task_cred(p)->uid;
 	spin_unlock_irq(&p->sighand->siglock);
 
 	pid = task_pid_vnr(p);
-	uid = p->uid;
 	get_task_struct(p);
 	read_unlock(&tasklist_lock);
 
diff --git a/kernel/fork.c b/kernel/fork.c
index 2a372a0..1dd8945 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -147,9 +147,8 @@
 	WARN_ON(atomic_read(&tsk->usage));
 	WARN_ON(tsk == current);
 
-	security_task_free(tsk);
-	free_uid(tsk->user);
-	put_group_info(tsk->group_info);
+	put_cred(tsk->real_cred);
+	put_cred(tsk->cred);
 	delayacct_tsk_free(tsk);
 
 	if (!profile_handoff_task(tsk))
@@ -815,12 +814,6 @@
 	if (!sig)
 		return -ENOMEM;
 
-	ret = copy_thread_group_keys(tsk);
-	if (ret < 0) {
-		kmem_cache_free(signal_cachep, sig);
-		return ret;
-	}
-
 	atomic_set(&sig->count, 1);
 	atomic_set(&sig->live, 1);
 	init_waitqueue_head(&sig->wait_chldexit);
@@ -865,7 +858,6 @@
 void __cleanup_signal(struct signal_struct *sig)
 {
 	thread_group_cputime_free(sig);
-	exit_thread_group_keys(sig);
 	tty_kref_put(sig->tty);
 	kmem_cache_free(signal_cachep, sig);
 }
@@ -981,16 +973,16 @@
 	DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
 #endif
 	retval = -EAGAIN;
-	if (atomic_read(&p->user->processes) >=
+	if (atomic_read(&p->real_cred->user->processes) >=
 			p->signal->rlim[RLIMIT_NPROC].rlim_cur) {
 		if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RESOURCE) &&
-		    p->user != current->nsproxy->user_ns->root_user)
+		    p->real_cred->user != INIT_USER)
 			goto bad_fork_free;
 	}
 
-	atomic_inc(&p->user->__count);
-	atomic_inc(&p->user->processes);
-	get_group_info(p->group_info);
+	retval = copy_creds(p, clone_flags);
+	if (retval < 0)
+		goto bad_fork_free;
 
 	/*
 	 * If multiple threads are within copy_process(), then this check
@@ -1045,10 +1037,6 @@
 	do_posix_clock_monotonic_gettime(&p->start_time);
 	p->real_start_time = p->start_time;
 	monotonic_to_bootbased(&p->real_start_time);
-#ifdef CONFIG_SECURITY
-	p->security = NULL;
-#endif
-	p->cap_bset = current->cap_bset;
 	p->io_context = NULL;
 	p->audit_context = NULL;
 	cgroup_fork(p);
@@ -1093,10 +1081,8 @@
 	/* Perform scheduler related setup. Assign this task to a CPU. */
 	sched_fork(p, clone_flags);
 
-	if ((retval = security_task_alloc(p)))
-		goto bad_fork_cleanup_policy;
 	if ((retval = audit_alloc(p)))
-		goto bad_fork_cleanup_security;
+		goto bad_fork_cleanup_policy;
 	/* copy all the process information */
 	if ((retval = copy_semundo(clone_flags, p)))
 		goto bad_fork_cleanup_audit;
@@ -1110,10 +1096,8 @@
 		goto bad_fork_cleanup_sighand;
 	if ((retval = copy_mm(clone_flags, p)))
 		goto bad_fork_cleanup_signal;
-	if ((retval = copy_keys(clone_flags, p)))
-		goto bad_fork_cleanup_mm;
 	if ((retval = copy_namespaces(clone_flags, p)))
-		goto bad_fork_cleanup_keys;
+		goto bad_fork_cleanup_mm;
 	if ((retval = copy_io(clone_flags, p)))
 		goto bad_fork_cleanup_namespaces;
 	retval = copy_thread(0, clone_flags, stack_start, stack_size, p, regs);
@@ -1278,8 +1262,6 @@
 	put_io_context(p->io_context);
 bad_fork_cleanup_namespaces:
 	exit_task_namespaces(p);
-bad_fork_cleanup_keys:
-	exit_keys(p);
 bad_fork_cleanup_mm:
 	if (p->mm)
 		mmput(p->mm);
@@ -1295,8 +1277,6 @@
 	exit_sem(p);
 bad_fork_cleanup_audit:
 	audit_free(p);
-bad_fork_cleanup_security:
-	security_task_free(p);
 bad_fork_cleanup_policy:
 #ifdef CONFIG_NUMA
 	mpol_put(p->mempolicy);
@@ -1309,9 +1289,9 @@
 bad_fork_cleanup_put_domain:
 	module_put(task_thread_info(p)->exec_domain->module);
 bad_fork_cleanup_count:
-	put_group_info(p->group_info);
-	atomic_dec(&p->user->processes);
-	free_uid(p->user);
+	atomic_dec(&p->cred->user->processes);
+	put_cred(p->real_cred);
+	put_cred(p->cred);
 bad_fork_free:
 	free_task(p);
 fork_out:
@@ -1355,6 +1335,20 @@
 	long nr;
 
 	/*
+	 * Do some preliminary argument and permissions checking before we
+	 * actually start allocating stuff
+	 */
+	if (clone_flags & CLONE_NEWUSER) {
+		if (clone_flags & CLONE_THREAD)
+			return -EINVAL;
+		/* hopefully this check will go away when userns support is
+		 * complete
+		 */
+		if (!capable(CAP_SYS_ADMIN))
+			return -EPERM;
+	}
+
+	/*
 	 * We hope to recycle these flags after 2.6.26
 	 */
 	if (unlikely(clone_flags & CLONE_STOPPED)) {
@@ -1601,8 +1595,7 @@
 	err = -EINVAL;
 	if (unshare_flags & ~(CLONE_THREAD|CLONE_FS|CLONE_NEWNS|CLONE_SIGHAND|
 				CLONE_VM|CLONE_FILES|CLONE_SYSVSEM|
-				CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWUSER|
-				CLONE_NEWNET))
+				CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET))
 		goto bad_unshare_out;
 
 	/*
diff --git a/kernel/futex.c b/kernel/futex.c
index 8af1002..4fe790e 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -439,13 +439,20 @@
 static struct task_struct * futex_find_get_task(pid_t pid)
 {
 	struct task_struct *p;
+	const struct cred *cred = current_cred(), *pcred;
 
 	rcu_read_lock();
 	p = find_task_by_vpid(pid);
-	if (!p || ((current->euid != p->euid) && (current->euid != p->uid)))
+	if (!p) {
 		p = ERR_PTR(-ESRCH);
-	else
-		get_task_struct(p);
+	} else {
+		pcred = __task_cred(p);
+		if (cred->euid != pcred->euid &&
+		    cred->euid != pcred->uid)
+			p = ERR_PTR(-ESRCH);
+		else
+			get_task_struct(p);
+	}
 
 	rcu_read_unlock();
 
@@ -1829,6 +1836,7 @@
 {
 	struct robust_list_head __user *head;
 	unsigned long ret;
+	const struct cred *cred = current_cred(), *pcred;
 
 	if (!futex_cmpxchg_enabled)
 		return -ENOSYS;
@@ -1844,8 +1852,10 @@
 		if (!p)
 			goto err_unlock;
 		ret = -EPERM;
-		if ((current->euid != p->euid) && (current->euid != p->uid) &&
-				!capable(CAP_SYS_PTRACE))
+		pcred = __task_cred(p);
+		if (cred->euid != pcred->euid &&
+		    cred->euid != pcred->uid &&
+		    !capable(CAP_SYS_PTRACE))
 			goto err_unlock;
 		head = p->robust_list;
 		rcu_read_unlock();
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 04ac3a9..d607a5b 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -135,6 +135,7 @@
 {
 	struct compat_robust_list_head __user *head;
 	unsigned long ret;
+	const struct cred *cred = current_cred(), *pcred;
 
 	if (!futex_cmpxchg_enabled)
 		return -ENOSYS;
@@ -150,8 +151,10 @@
 		if (!p)
 			goto err_unlock;
 		ret = -EPERM;
-		if ((current->euid != p->euid) && (current->euid != p->uid) &&
-				!capable(CAP_SYS_PTRACE))
+		pcred = __task_cred(p);
+		if (cred->euid != pcred->euid &&
+		    cred->euid != pcred->uid &&
+		    !capable(CAP_SYS_PTRACE))
 			goto err_unlock;
 		head = p->compat_robust_list;
 		read_unlock(&tasklist_lock);
diff --git a/kernel/kmod.c b/kernel/kmod.c
index 3d3c3ea..b46dbb9 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -118,10 +118,10 @@
 struct subprocess_info {
 	struct work_struct work;
 	struct completion *complete;
+	struct cred *cred;
 	char *path;
 	char **argv;
 	char **envp;
-	struct key *ring;
 	enum umh_wait wait;
 	int retval;
 	struct file *stdin;
@@ -134,19 +134,20 @@
 static int ____call_usermodehelper(void *data)
 {
 	struct subprocess_info *sub_info = data;
-	struct key *new_session, *old_session;
 	int retval;
 
-	/* Unblock all signals and set the session keyring. */
-	new_session = key_get(sub_info->ring);
+	BUG_ON(atomic_read(&sub_info->cred->usage) != 1);
+
+	/* Unblock all signals */
 	spin_lock_irq(&current->sighand->siglock);
-	old_session = __install_session_keyring(current, new_session);
 	flush_signal_handlers(current, 1);
 	sigemptyset(&current->blocked);
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	key_put(old_session);
+	/* Install the credentials */
+	commit_creds(sub_info->cred);
+	sub_info->cred = NULL;
 
 	/* Install input pipe when needed */
 	if (sub_info->stdin) {
@@ -185,6 +186,8 @@
 {
 	if (info->cleanup)
 		(*info->cleanup)(info->argv, info->envp);
+	if (info->cred)
+		put_cred(info->cred);
 	kfree(info);
 }
 EXPORT_SYMBOL(call_usermodehelper_freeinfo);
@@ -240,6 +243,8 @@
 	pid_t pid;
 	enum umh_wait wait = sub_info->wait;
 
+	BUG_ON(atomic_read(&sub_info->cred->usage) != 1);
+
 	/* CLONE_VFORK: wait until the usermode helper has execve'd
 	 * successfully We need the data structures to stay around
 	 * until that is done.  */
@@ -362,6 +367,9 @@
 	sub_info->path = path;
 	sub_info->argv = argv;
 	sub_info->envp = envp;
+	sub_info->cred = prepare_usermodehelper_creds();
+	if (!sub_info->cred)
+		return NULL;
 
   out:
 	return sub_info;
@@ -376,7 +384,13 @@
 void call_usermodehelper_setkeys(struct subprocess_info *info,
 				 struct key *session_keyring)
 {
-	info->ring = session_keyring;
+#ifdef CONFIG_KEYS
+	struct thread_group_cred *tgcred = info->cred->tgcred;
+	key_put(tgcred->session_keyring);
+	tgcred->session_keyring = key_get(session_keyring);
+#else
+	BUG();
+#endif
 }
 EXPORT_SYMBOL(call_usermodehelper_setkeys);
 
@@ -444,6 +458,8 @@
 	DECLARE_COMPLETION_ONSTACK(done);
 	int retval = 0;
 
+	BUG_ON(atomic_read(&sub_info->cred->usage) != 1);
+
 	helper_lock();
 	if (sub_info->path[0] == '\0')
 		goto out;
diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c
index 1d3ef29..63598dc 100644
--- a/kernel/nsproxy.c
+++ b/kernel/nsproxy.c
@@ -80,12 +80,6 @@
 		goto out_pid;
 	}
 
-	new_nsp->user_ns = copy_user_ns(flags, tsk->nsproxy->user_ns);
-	if (IS_ERR(new_nsp->user_ns)) {
-		err = PTR_ERR(new_nsp->user_ns);
-		goto out_user;
-	}
-
 	new_nsp->net_ns = copy_net_ns(flags, tsk->nsproxy->net_ns);
 	if (IS_ERR(new_nsp->net_ns)) {
 		err = PTR_ERR(new_nsp->net_ns);
@@ -95,9 +89,6 @@
 	return new_nsp;
 
 out_net:
-	if (new_nsp->user_ns)
-		put_user_ns(new_nsp->user_ns);
-out_user:
 	if (new_nsp->pid_ns)
 		put_pid_ns(new_nsp->pid_ns);
 out_pid:
@@ -130,7 +121,7 @@
 	get_nsproxy(old_ns);
 
 	if (!(flags & (CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
-				CLONE_NEWUSER | CLONE_NEWPID | CLONE_NEWNET)))
+				CLONE_NEWPID | CLONE_NEWNET)))
 		return 0;
 
 	if (!capable(CAP_SYS_ADMIN)) {
@@ -173,8 +164,6 @@
 		put_ipc_ns(ns->ipc_ns);
 	if (ns->pid_ns)
 		put_pid_ns(ns->pid_ns);
-	if (ns->user_ns)
-		put_user_ns(ns->user_ns);
 	put_net(ns->net_ns);
 	kmem_cache_free(nsproxy_cachep, ns);
 }
@@ -189,7 +178,7 @@
 	int err = 0;
 
 	if (!(unshare_flags & (CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
-			       CLONE_NEWUSER | CLONE_NEWNET)))
+			       CLONE_NEWNET)))
 		return 0;
 
 	if (!capable(CAP_SYS_ADMIN))
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 4c8bcd7..ca2df68 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -115,6 +115,8 @@
 
 int __ptrace_may_access(struct task_struct *task, unsigned int mode)
 {
+	const struct cred *cred = current_cred(), *tcred;
+
 	/* May we inspect the given task?
 	 * This check is used both for attaching with ptrace
 	 * and for allowing access to sensitive information in /proc.
@@ -127,13 +129,19 @@
 	/* Don't let security modules deny introspection */
 	if (task == current)
 		return 0;
-	if (((current->uid != task->euid) ||
-	     (current->uid != task->suid) ||
-	     (current->uid != task->uid) ||
-	     (current->gid != task->egid) ||
-	     (current->gid != task->sgid) ||
-	     (current->gid != task->gid)) && !capable(CAP_SYS_PTRACE))
+	rcu_read_lock();
+	tcred = __task_cred(task);
+	if ((cred->uid != tcred->euid ||
+	     cred->uid != tcred->suid ||
+	     cred->uid != tcred->uid  ||
+	     cred->gid != tcred->egid ||
+	     cred->gid != tcred->sgid ||
+	     cred->gid != tcred->gid) &&
+	    !capable(CAP_SYS_PTRACE)) {
+		rcu_read_unlock();
 		return -EPERM;
+	}
+	rcu_read_unlock();
 	smp_rmb();
 	if (task->mm)
 		dumpable = get_dumpable(task->mm);
@@ -163,6 +171,14 @@
 	if (same_thread_group(task, current))
 		goto out;
 
+	/* Protect exec's credential calculations against our interference;
+	 * SUID, SGID and LSM creds get determined differently under ptrace.
+	 */
+	retval = mutex_lock_interruptible(&current->cred_exec_mutex);
+	if (retval  < 0)
+		goto out;
+
+	retval = -EPERM;
 repeat:
 	/*
 	 * Nasty, nasty.
@@ -202,6 +218,7 @@
 bad:
 	write_unlock_irqrestore(&tasklist_lock, flags);
 	task_unlock(task);
+	mutex_unlock(&current->cred_exec_mutex);
 out:
 	return retval;
 }
diff --git a/kernel/sched.c b/kernel/sched.c
index b7480fb..993bc74 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -345,7 +345,9 @@
 	struct task_group *tg;
 
 #ifdef CONFIG_USER_SCHED
-	tg = p->user->tg;
+	rcu_read_lock();
+	tg = __task_cred(p)->user->tg;
+	rcu_read_unlock();
 #elif defined(CONFIG_CGROUP_SCHED)
 	tg = container_of(task_subsys_state(p, cpu_cgroup_subsys_id),
 				struct task_group, css);
@@ -5134,6 +5136,22 @@
 	set_load_weight(p);
 }
 
+/*
+ * check the target process has a UID that matches the current process's
+ */
+static bool check_same_owner(struct task_struct *p)
+{
+	const struct cred *cred = current_cred(), *pcred;
+	bool match;
+
+	rcu_read_lock();
+	pcred = __task_cred(p);
+	match = (cred->euid == pcred->euid ||
+		 cred->euid == pcred->uid);
+	rcu_read_unlock();
+	return match;
+}
+
 static int __sched_setscheduler(struct task_struct *p, int policy,
 				struct sched_param *param, bool user)
 {
@@ -5193,8 +5211,7 @@
 			return -EPERM;
 
 		/* can't change other user's priorities */
-		if ((current->euid != p->euid) &&
-		    (current->euid != p->uid))
+		if (!check_same_owner(p))
 			return -EPERM;
 	}
 
@@ -5426,8 +5443,7 @@
 	read_unlock(&tasklist_lock);
 
 	retval = -EPERM;
-	if ((current->euid != p->euid) && (current->euid != p->uid) &&
-			!capable(CAP_SYS_NICE))
+	if (!check_same_owner(p) && !capable(CAP_SYS_NICE))
 		goto out_unlock;
 
 	retval = security_task_setscheduler(p, 0, NULL);
diff --git a/kernel/signal.c b/kernel/signal.c
index 4530fc6..2a64304 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -177,6 +177,11 @@
 	return sig;
 }
 
+/*
+ * allocate a new signal queue record
+ * - this may be called without locks if and only if t == current, otherwise an
+ *   appopriate lock must be held to stop the target task from exiting
+ */
 static struct sigqueue *__sigqueue_alloc(struct task_struct *t, gfp_t flags,
 					 int override_rlimit)
 {
@@ -184,11 +189,12 @@
 	struct user_struct *user;
 
 	/*
-	 * In order to avoid problems with "switch_user()", we want to make
-	 * sure that the compiler doesn't re-load "t->user"
+	 * We won't get problems with the target's UID changing under us
+	 * because changing it requires RCU be used, and if t != current, the
+	 * caller must be holding the RCU readlock (by way of a spinlock) and
+	 * we use RCU protection here
 	 */
-	user = t->user;
-	barrier();
+	user = get_uid(__task_cred(t)->user);
 	atomic_inc(&user->sigpending);
 	if (override_rlimit ||
 	    atomic_read(&user->sigpending) <=
@@ -196,12 +202,14 @@
 		q = kmem_cache_alloc(sigqueue_cachep, flags);
 	if (unlikely(q == NULL)) {
 		atomic_dec(&user->sigpending);
+		free_uid(user);
 	} else {
 		INIT_LIST_HEAD(&q->list);
 		q->flags = 0;
-		q->user = get_uid(user);
+		q->user = user;
 	}
-	return(q);
+
+	return q;
 }
 
 static void __sigqueue_free(struct sigqueue *q)
@@ -562,10 +570,12 @@
 
 /*
  * Bad permissions for sending the signal
+ * - the caller must hold at least the RCU read lock
  */
 static int check_kill_permission(int sig, struct siginfo *info,
 				 struct task_struct *t)
 {
+	const struct cred *cred = current_cred(), *tcred;
 	struct pid *sid;
 	int error;
 
@@ -579,8 +589,11 @@
 	if (error)
 		return error;
 
-	if ((current->euid ^ t->suid) && (current->euid ^ t->uid) &&
-	    (current->uid  ^ t->suid) && (current->uid  ^ t->uid) &&
+	tcred = __task_cred(t);
+	if ((cred->euid ^ tcred->suid) &&
+	    (cred->euid ^ tcred->uid) &&
+	    (cred->uid  ^ tcred->suid) &&
+	    (cred->uid  ^ tcred->uid) &&
 	    !capable(CAP_KILL)) {
 		switch (sig) {
 		case SIGCONT:
@@ -844,7 +857,7 @@
 			q->info.si_errno = 0;
 			q->info.si_code = SI_USER;
 			q->info.si_pid = task_pid_vnr(current);
-			q->info.si_uid = current->uid;
+			q->info.si_uid = current_uid();
 			break;
 		case (unsigned long) SEND_SIG_PRIV:
 			q->info.si_signo = sig;
@@ -1008,6 +1021,10 @@
 	return sighand;
 }
 
+/*
+ * send signal info to all the members of a group
+ * - the caller must hold the RCU read lock at least
+ */
 int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
 {
 	unsigned long flags;
@@ -1029,8 +1046,8 @@
 /*
  * __kill_pgrp_info() sends a signal to a process group: this is what the tty
  * control characters do (^C, ^Z etc)
+ * - the caller must hold at least a readlock on tasklist_lock
  */
-
 int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp)
 {
 	struct task_struct *p = NULL;
@@ -1086,6 +1103,7 @@
 {
 	int ret = -EINVAL;
 	struct task_struct *p;
+	const struct cred *pcred;
 
 	if (!valid_signal(sig))
 		return ret;
@@ -1096,9 +1114,11 @@
 		ret = -ESRCH;
 		goto out_unlock;
 	}
-	if ((info == SEND_SIG_NOINFO || (!is_si_special(info) && SI_FROMUSER(info)))
-	    && (euid != p->suid) && (euid != p->uid)
-	    && (uid != p->suid) && (uid != p->uid)) {
+	pcred = __task_cred(p);
+	if ((info == SEND_SIG_NOINFO ||
+	     (!is_si_special(info) && SI_FROMUSER(info))) &&
+	    euid != pcred->suid && euid != pcred->uid &&
+	    uid  != pcred->suid && uid  != pcred->uid) {
 		ret = -EPERM;
 		goto out_unlock;
 	}
@@ -1369,10 +1389,9 @@
 	 */
 	rcu_read_lock();
 	info.si_pid = task_pid_nr_ns(tsk, tsk->parent->nsproxy->pid_ns);
+	info.si_uid = __task_cred(tsk)->uid;
 	rcu_read_unlock();
 
-	info.si_uid = tsk->uid;
-
 	thread_group_cputime(tsk, &cputime);
 	info.si_utime = cputime_to_jiffies(cputime.utime);
 	info.si_stime = cputime_to_jiffies(cputime.stime);
@@ -1440,10 +1459,9 @@
 	 */
 	rcu_read_lock();
 	info.si_pid = task_pid_nr_ns(tsk, tsk->parent->nsproxy->pid_ns);
+	info.si_uid = __task_cred(tsk)->uid;
 	rcu_read_unlock();
 
-	info.si_uid = tsk->uid;
-
 	info.si_utime = cputime_to_clock_t(tsk->utime);
 	info.si_stime = cputime_to_clock_t(tsk->stime);
 
@@ -1598,7 +1616,7 @@
 	info.si_signo = SIGTRAP;
 	info.si_code = exit_code;
 	info.si_pid = task_pid_vnr(current);
-	info.si_uid = current->uid;
+	info.si_uid = current_uid();
 
 	/* Let the debugger run.  */
 	spin_lock_irq(&current->sighand->siglock);
@@ -1710,7 +1728,7 @@
 		info->si_errno = 0;
 		info->si_code = SI_USER;
 		info->si_pid = task_pid_vnr(current->parent);
-		info->si_uid = current->parent->uid;
+		info->si_uid = task_uid(current->parent);
 	}
 
 	/* If the (new) signal is now blocked, requeue it.  */
@@ -2211,7 +2229,7 @@
 	info.si_errno = 0;
 	info.si_code = SI_USER;
 	info.si_pid = task_tgid_vnr(current);
-	info.si_uid = current->uid;
+	info.si_uid = current_uid();
 
 	return kill_something_info(sig, &info, pid);
 }
@@ -2228,7 +2246,7 @@
 	info.si_errno = 0;
 	info.si_code = SI_TKILL;
 	info.si_pid = task_tgid_vnr(current);
-	info.si_uid = current->uid;
+	info.si_uid = current_uid();
 
 	rcu_read_lock();
 	p = find_task_by_vpid(pid);
diff --git a/kernel/sys.c b/kernel/sys.c
index 31deba8..ebe65c2 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -112,12 +112,17 @@
 
 void (*pm_power_off_prepare)(void);
 
+/*
+ * set the priority of a task
+ * - the caller must hold the RCU read lock
+ */
 static int set_one_prio(struct task_struct *p, int niceval, int error)
 {
+	const struct cred *cred = current_cred(), *pcred = __task_cred(p);
 	int no_nice;
 
-	if (p->uid != current->euid &&
-		p->euid != current->euid && !capable(CAP_SYS_NICE)) {
+	if (pcred->uid  != cred->euid &&
+	    pcred->euid != cred->euid && !capable(CAP_SYS_NICE)) {
 		error = -EPERM;
 		goto out;
 	}
@@ -141,6 +146,7 @@
 {
 	struct task_struct *g, *p;
 	struct user_struct *user;
+	const struct cred *cred = current_cred();
 	int error = -EINVAL;
 	struct pid *pgrp;
 
@@ -174,18 +180,18 @@
 			} while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
 			break;
 		case PRIO_USER:
-			user = current->user;
+			user = (struct user_struct *) cred->user;
 			if (!who)
-				who = current->uid;
-			else
-				if ((who != current->uid) && !(user = find_user(who)))
-					goto out_unlock;	/* No processes for this user */
+				who = cred->uid;
+			else if ((who != cred->uid) &&
+				 !(user = find_user(who)))
+				goto out_unlock;	/* No processes for this user */
 
 			do_each_thread(g, p)
-				if (p->uid == who)
+				if (__task_cred(p)->uid == who)
 					error = set_one_prio(p, niceval, error);
 			while_each_thread(g, p);
-			if (who != current->uid)
+			if (who != cred->uid)
 				free_uid(user);		/* For find_user() */
 			break;
 	}
@@ -205,6 +211,7 @@
 {
 	struct task_struct *g, *p;
 	struct user_struct *user;
+	const struct cred *cred = current_cred();
 	long niceval, retval = -ESRCH;
 	struct pid *pgrp;
 
@@ -236,21 +243,21 @@
 			} while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
 			break;
 		case PRIO_USER:
-			user = current->user;
+			user = (struct user_struct *) cred->user;
 			if (!who)
-				who = current->uid;
-			else
-				if ((who != current->uid) && !(user = find_user(who)))
-					goto out_unlock;	/* No processes for this user */
+				who = cred->uid;
+			else if ((who != cred->uid) &&
+				 !(user = find_user(who)))
+				goto out_unlock;	/* No processes for this user */
 
 			do_each_thread(g, p)
-				if (p->uid == who) {
+				if (__task_cred(p)->uid == who) {
 					niceval = 20 - task_nice(p);
 					if (niceval > retval)
 						retval = niceval;
 				}
 			while_each_thread(g, p);
-			if (who != current->uid)
+			if (who != cred->uid)
 				free_uid(user);		/* for find_user() */
 			break;
 	}
@@ -472,46 +479,48 @@
  */
 asmlinkage long sys_setregid(gid_t rgid, gid_t egid)
 {
-	int old_rgid = current->gid;
-	int old_egid = current->egid;
-	int new_rgid = old_rgid;
-	int new_egid = old_egid;
+	const struct cred *old;
+	struct cred *new;
 	int retval;
 
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+	old = current_cred();
+
 	retval = security_task_setgid(rgid, egid, (gid_t)-1, LSM_SETID_RE);
 	if (retval)
-		return retval;
+		goto error;
 
+	retval = -EPERM;
 	if (rgid != (gid_t) -1) {
-		if ((old_rgid == rgid) ||
-		    (current->egid==rgid) ||
+		if (old->gid == rgid ||
+		    old->egid == rgid ||
 		    capable(CAP_SETGID))
-			new_rgid = rgid;
+			new->gid = rgid;
 		else
-			return -EPERM;
+			goto error;
 	}
 	if (egid != (gid_t) -1) {
-		if ((old_rgid == egid) ||
-		    (current->egid == egid) ||
-		    (current->sgid == egid) ||
+		if (old->gid == egid ||
+		    old->egid == egid ||
+		    old->sgid == egid ||
 		    capable(CAP_SETGID))
-			new_egid = egid;
+			new->egid = egid;
 		else
-			return -EPERM;
+			goto error;
 	}
-	if (new_egid != old_egid) {
-		set_dumpable(current->mm, suid_dumpable);
-		smp_wmb();
-	}
+
 	if (rgid != (gid_t) -1 ||
-	    (egid != (gid_t) -1 && egid != old_rgid))
-		current->sgid = new_egid;
-	current->fsgid = new_egid;
-	current->egid = new_egid;
-	current->gid = new_rgid;
-	key_fsgid_changed(current);
-	proc_id_connector(current, PROC_EVENT_GID);
-	return 0;
+	    (egid != (gid_t) -1 && egid != old->gid))
+		new->sgid = new->egid;
+	new->fsgid = new->egid;
+
+	return commit_creds(new);
+
+error:
+	abort_creds(new);
+	return retval;
 }
 
 /*
@@ -521,56 +530,54 @@
  */
 asmlinkage long sys_setgid(gid_t gid)
 {
-	int old_egid = current->egid;
+	const struct cred *old;
+	struct cred *new;
 	int retval;
 
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+	old = current_cred();
+
 	retval = security_task_setgid(gid, (gid_t)-1, (gid_t)-1, LSM_SETID_ID);
 	if (retval)
-		return retval;
+		goto error;
 
-	if (capable(CAP_SETGID)) {
-		if (old_egid != gid) {
-			set_dumpable(current->mm, suid_dumpable);
-			smp_wmb();
-		}
-		current->gid = current->egid = current->sgid = current->fsgid = gid;
-	} else if ((gid == current->gid) || (gid == current->sgid)) {
-		if (old_egid != gid) {
-			set_dumpable(current->mm, suid_dumpable);
-			smp_wmb();
-		}
-		current->egid = current->fsgid = gid;
-	}
+	retval = -EPERM;
+	if (capable(CAP_SETGID))
+		new->gid = new->egid = new->sgid = new->fsgid = gid;
+	else if (gid == old->gid || gid == old->sgid)
+		new->egid = new->fsgid = gid;
 	else
-		return -EPERM;
+		goto error;
 
-	key_fsgid_changed(current);
-	proc_id_connector(current, PROC_EVENT_GID);
-	return 0;
+	return commit_creds(new);
+
+error:
+	abort_creds(new);
+	return retval;
 }
   
-static int set_user(uid_t new_ruid, int dumpclear)
+/*
+ * change the user struct in a credentials set to match the new UID
+ */
+static int set_user(struct cred *new)
 {
 	struct user_struct *new_user;
 
-	new_user = alloc_uid(current->nsproxy->user_ns, new_ruid);
+	new_user = alloc_uid(current_user_ns(), new->uid);
 	if (!new_user)
 		return -EAGAIN;
 
 	if (atomic_read(&new_user->processes) >=
 				current->signal->rlim[RLIMIT_NPROC].rlim_cur &&
-			new_user != current->nsproxy->user_ns->root_user) {
+			new_user != INIT_USER) {
 		free_uid(new_user);
 		return -EAGAIN;
 	}
 
-	switch_uid(new_user);
-
-	if (dumpclear) {
-		set_dumpable(current->mm, suid_dumpable);
-		smp_wmb();
-	}
-	current->uid = new_ruid;
+	free_uid(new->user);
+	new->user = new_user;
 	return 0;
 }
 
@@ -591,54 +598,56 @@
  */
 asmlinkage long sys_setreuid(uid_t ruid, uid_t euid)
 {
-	int old_ruid, old_euid, old_suid, new_ruid, new_euid;
+	const struct cred *old;
+	struct cred *new;
 	int retval;
 
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+	old = current_cred();
+
 	retval = security_task_setuid(ruid, euid, (uid_t)-1, LSM_SETID_RE);
 	if (retval)
-		return retval;
+		goto error;
 
-	new_ruid = old_ruid = current->uid;
-	new_euid = old_euid = current->euid;
-	old_suid = current->suid;
-
+	retval = -EPERM;
 	if (ruid != (uid_t) -1) {
-		new_ruid = ruid;
-		if ((old_ruid != ruid) &&
-		    (current->euid != ruid) &&
+		new->uid = ruid;
+		if (old->uid != ruid &&
+		    old->euid != ruid &&
 		    !capable(CAP_SETUID))
-			return -EPERM;
+			goto error;
 	}
 
 	if (euid != (uid_t) -1) {
-		new_euid = euid;
-		if ((old_ruid != euid) &&
-		    (current->euid != euid) &&
-		    (current->suid != euid) &&
+		new->euid = euid;
+		if (old->uid != euid &&
+		    old->euid != euid &&
+		    old->suid != euid &&
 		    !capable(CAP_SETUID))
-			return -EPERM;
+			goto error;
 	}
 
-	if (new_ruid != old_ruid && set_user(new_ruid, new_euid != old_euid) < 0)
-		return -EAGAIN;
+	retval = -EAGAIN;
+	if (new->uid != old->uid && set_user(new) < 0)
+		goto error;
 
-	if (new_euid != old_euid) {
-		set_dumpable(current->mm, suid_dumpable);
-		smp_wmb();
-	}
-	current->fsuid = current->euid = new_euid;
 	if (ruid != (uid_t) -1 ||
-	    (euid != (uid_t) -1 && euid != old_ruid))
-		current->suid = current->euid;
-	current->fsuid = current->euid;
+	    (euid != (uid_t) -1 && euid != old->uid))
+		new->suid = new->euid;
+	new->fsuid = new->euid;
 
-	key_fsuid_changed(current);
-	proc_id_connector(current, PROC_EVENT_UID);
+	retval = security_task_fix_setuid(new, old, LSM_SETID_RE);
+	if (retval < 0)
+		goto error;
 
-	return security_task_post_setuid(old_ruid, old_euid, old_suid, LSM_SETID_RE);
+	return commit_creds(new);
+
+error:
+	abort_creds(new);
+	return retval;
 }
-
-
 		
 /*
  * setuid() is implemented like SysV with SAVED_IDS 
@@ -653,36 +662,41 @@
  */
 asmlinkage long sys_setuid(uid_t uid)
 {
-	int old_euid = current->euid;
-	int old_ruid, old_suid, new_suid;
+	const struct cred *old;
+	struct cred *new;
 	int retval;
 
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+	old = current_cred();
+
 	retval = security_task_setuid(uid, (uid_t)-1, (uid_t)-1, LSM_SETID_ID);
 	if (retval)
-		return retval;
+		goto error;
 
-	old_ruid = current->uid;
-	old_suid = current->suid;
-	new_suid = old_suid;
-	
+	retval = -EPERM;
 	if (capable(CAP_SETUID)) {
-		if (uid != old_ruid && set_user(uid, old_euid != uid) < 0)
-			return -EAGAIN;
-		new_suid = uid;
-	} else if ((uid != current->uid) && (uid != new_suid))
-		return -EPERM;
-
-	if (old_euid != uid) {
-		set_dumpable(current->mm, suid_dumpable);
-		smp_wmb();
+		new->suid = new->uid = uid;
+		if (uid != old->uid && set_user(new) < 0) {
+			retval = -EAGAIN;
+			goto error;
+		}
+	} else if (uid != old->uid && uid != new->suid) {
+		goto error;
 	}
-	current->fsuid = current->euid = uid;
-	current->suid = new_suid;
 
-	key_fsuid_changed(current);
-	proc_id_connector(current, PROC_EVENT_UID);
+	new->fsuid = new->euid = uid;
 
-	return security_task_post_setuid(old_ruid, old_euid, old_suid, LSM_SETID_ID);
+	retval = security_task_fix_setuid(new, old, LSM_SETID_ID);
+	if (retval < 0)
+		goto error;
+
+	return commit_creds(new);
+
+error:
+	abort_creds(new);
+	return retval;
 }
 
 
@@ -692,54 +706,63 @@
  */
 asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid)
 {
-	int old_ruid = current->uid;
-	int old_euid = current->euid;
-	int old_suid = current->suid;
+	const struct cred *old;
+	struct cred *new;
 	int retval;
 
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+
 	retval = security_task_setuid(ruid, euid, suid, LSM_SETID_RES);
 	if (retval)
-		return retval;
+		goto error;
+	old = current_cred();
 
+	retval = -EPERM;
 	if (!capable(CAP_SETUID)) {
-		if ((ruid != (uid_t) -1) && (ruid != current->uid) &&
-		    (ruid != current->euid) && (ruid != current->suid))
-			return -EPERM;
-		if ((euid != (uid_t) -1) && (euid != current->uid) &&
-		    (euid != current->euid) && (euid != current->suid))
-			return -EPERM;
-		if ((suid != (uid_t) -1) && (suid != current->uid) &&
-		    (suid != current->euid) && (suid != current->suid))
-			return -EPERM;
+		if (ruid != (uid_t) -1 && ruid != old->uid &&
+		    ruid != old->euid  && ruid != old->suid)
+			goto error;
+		if (euid != (uid_t) -1 && euid != old->uid &&
+		    euid != old->euid  && euid != old->suid)
+			goto error;
+		if (suid != (uid_t) -1 && suid != old->uid &&
+		    suid != old->euid  && suid != old->suid)
+			goto error;
 	}
+
+	retval = -EAGAIN;
 	if (ruid != (uid_t) -1) {
-		if (ruid != current->uid && set_user(ruid, euid != current->euid) < 0)
-			return -EAGAIN;
+		new->uid = ruid;
+		if (ruid != old->uid && set_user(new) < 0)
+			goto error;
 	}
-	if (euid != (uid_t) -1) {
-		if (euid != current->euid) {
-			set_dumpable(current->mm, suid_dumpable);
-			smp_wmb();
-		}
-		current->euid = euid;
-	}
-	current->fsuid = current->euid;
+	if (euid != (uid_t) -1)
+		new->euid = euid;
 	if (suid != (uid_t) -1)
-		current->suid = suid;
+		new->suid = suid;
+	new->fsuid = new->euid;
 
-	key_fsuid_changed(current);
-	proc_id_connector(current, PROC_EVENT_UID);
+	retval = security_task_fix_setuid(new, old, LSM_SETID_RES);
+	if (retval < 0)
+		goto error;
 
-	return security_task_post_setuid(old_ruid, old_euid, old_suid, LSM_SETID_RES);
+	return commit_creds(new);
+
+error:
+	abort_creds(new);
+	return retval;
 }
 
 asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid)
 {
+	const struct cred *cred = current_cred();
 	int retval;
 
-	if (!(retval = put_user(current->uid, ruid)) &&
-	    !(retval = put_user(current->euid, euid)))
-		retval = put_user(current->suid, suid);
+	if (!(retval   = put_user(cred->uid,  ruid)) &&
+	    !(retval   = put_user(cred->euid, euid)))
+		retval = put_user(cred->suid, suid);
 
 	return retval;
 }
@@ -749,48 +772,55 @@
  */
 asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid)
 {
+	const struct cred *old;
+	struct cred *new;
 	int retval;
 
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+	old = current_cred();
+
 	retval = security_task_setgid(rgid, egid, sgid, LSM_SETID_RES);
 	if (retval)
-		return retval;
+		goto error;
 
+	retval = -EPERM;
 	if (!capable(CAP_SETGID)) {
-		if ((rgid != (gid_t) -1) && (rgid != current->gid) &&
-		    (rgid != current->egid) && (rgid != current->sgid))
-			return -EPERM;
-		if ((egid != (gid_t) -1) && (egid != current->gid) &&
-		    (egid != current->egid) && (egid != current->sgid))
-			return -EPERM;
-		if ((sgid != (gid_t) -1) && (sgid != current->gid) &&
-		    (sgid != current->egid) && (sgid != current->sgid))
-			return -EPERM;
+		if (rgid != (gid_t) -1 && rgid != old->gid &&
+		    rgid != old->egid  && rgid != old->sgid)
+			goto error;
+		if (egid != (gid_t) -1 && egid != old->gid &&
+		    egid != old->egid  && egid != old->sgid)
+			goto error;
+		if (sgid != (gid_t) -1 && sgid != old->gid &&
+		    sgid != old->egid  && sgid != old->sgid)
+			goto error;
 	}
-	if (egid != (gid_t) -1) {
-		if (egid != current->egid) {
-			set_dumpable(current->mm, suid_dumpable);
-			smp_wmb();
-		}
-		current->egid = egid;
-	}
-	current->fsgid = current->egid;
-	if (rgid != (gid_t) -1)
-		current->gid = rgid;
-	if (sgid != (gid_t) -1)
-		current->sgid = sgid;
 
-	key_fsgid_changed(current);
-	proc_id_connector(current, PROC_EVENT_GID);
-	return 0;
+	if (rgid != (gid_t) -1)
+		new->gid = rgid;
+	if (egid != (gid_t) -1)
+		new->egid = egid;
+	if (sgid != (gid_t) -1)
+		new->sgid = sgid;
+	new->fsgid = new->egid;
+
+	return commit_creds(new);
+
+error:
+	abort_creds(new);
+	return retval;
 }
 
 asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid)
 {
+	const struct cred *cred = current_cred();
 	int retval;
 
-	if (!(retval = put_user(current->gid, rgid)) &&
-	    !(retval = put_user(current->egid, egid)))
-		retval = put_user(current->sgid, sgid);
+	if (!(retval   = put_user(cred->gid,  rgid)) &&
+	    !(retval   = put_user(cred->egid, egid)))
+		retval = put_user(cred->sgid, sgid);
 
 	return retval;
 }
@@ -804,27 +834,35 @@
  */
 asmlinkage long sys_setfsuid(uid_t uid)
 {
-	int old_fsuid;
+	const struct cred *old;
+	struct cred *new;
+	uid_t old_fsuid;
 
-	old_fsuid = current->fsuid;
-	if (security_task_setuid(uid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS))
-		return old_fsuid;
+	new = prepare_creds();
+	if (!new)
+		return current_fsuid();
+	old = current_cred();
+	old_fsuid = old->fsuid;
 
-	if (uid == current->uid || uid == current->euid ||
-	    uid == current->suid || uid == current->fsuid || 
+	if (security_task_setuid(uid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS) < 0)
+		goto error;
+
+	if (uid == old->uid  || uid == old->euid  ||
+	    uid == old->suid || uid == old->fsuid ||
 	    capable(CAP_SETUID)) {
 		if (uid != old_fsuid) {
-			set_dumpable(current->mm, suid_dumpable);
-			smp_wmb();
+			new->fsuid = uid;
+			if (security_task_fix_setuid(new, old, LSM_SETID_FS) == 0)
+				goto change_okay;
 		}
-		current->fsuid = uid;
 	}
 
-	key_fsuid_changed(current);
-	proc_id_connector(current, PROC_EVENT_UID);
+error:
+	abort_creds(new);
+	return old_fsuid;
 
-	security_task_post_setuid(old_fsuid, (uid_t)-1, (uid_t)-1, LSM_SETID_FS);
-
+change_okay:
+	commit_creds(new);
 	return old_fsuid;
 }
 
@@ -833,23 +871,34 @@
  */
 asmlinkage long sys_setfsgid(gid_t gid)
 {
-	int old_fsgid;
+	const struct cred *old;
+	struct cred *new;
+	gid_t old_fsgid;
 
-	old_fsgid = current->fsgid;
+	new = prepare_creds();
+	if (!new)
+		return current_fsgid();
+	old = current_cred();
+	old_fsgid = old->fsgid;
+
 	if (security_task_setgid(gid, (gid_t)-1, (gid_t)-1, LSM_SETID_FS))
-		return old_fsgid;
+		goto error;
 
-	if (gid == current->gid || gid == current->egid ||
-	    gid == current->sgid || gid == current->fsgid || 
+	if (gid == old->gid  || gid == old->egid  ||
+	    gid == old->sgid || gid == old->fsgid ||
 	    capable(CAP_SETGID)) {
 		if (gid != old_fsgid) {
-			set_dumpable(current->mm, suid_dumpable);
-			smp_wmb();
+			new->fsgid = gid;
+			goto change_okay;
 		}
-		current->fsgid = gid;
-		key_fsgid_changed(current);
-		proc_id_connector(current, PROC_EVENT_GID);
 	}
+
+error:
+	abort_creds(new);
+	return old_fsgid;
+
+change_okay:
+	commit_creds(new);
 	return old_fsgid;
 }
 
@@ -1118,7 +1167,7 @@
 
 /* export the group_info to a user-space array */
 static int groups_to_user(gid_t __user *grouplist,
-    struct group_info *group_info)
+			  const struct group_info *group_info)
 {
 	int i;
 	unsigned int count = group_info->ngroups;
@@ -1186,7 +1235,7 @@
 }
 
 /* a simple bsearch */
-int groups_search(struct group_info *group_info, gid_t grp)
+int groups_search(const struct group_info *group_info, gid_t grp)
 {
 	unsigned int left, right;
 
@@ -1208,51 +1257,74 @@
 	return 0;
 }
 
-/* validate and set current->group_info */
-int set_current_groups(struct group_info *group_info)
+/**
+ * set_groups - Change a group subscription in a set of credentials
+ * @new: The newly prepared set of credentials to alter
+ * @group_info: The group list to install
+ *
+ * Validate a group subscription and, if valid, insert it into a set
+ * of credentials.
+ */
+int set_groups(struct cred *new, struct group_info *group_info)
 {
 	int retval;
-	struct group_info *old_info;
 
 	retval = security_task_setgroups(group_info);
 	if (retval)
 		return retval;
 
+	put_group_info(new->group_info);
 	groups_sort(group_info);
 	get_group_info(group_info);
-
-	task_lock(current);
-	old_info = current->group_info;
-	current->group_info = group_info;
-	task_unlock(current);
-
-	put_group_info(old_info);
-
+	new->group_info = group_info;
 	return 0;
 }
 
+EXPORT_SYMBOL(set_groups);
+
+/**
+ * set_current_groups - Change current's group subscription
+ * @group_info: The group list to impose
+ *
+ * Validate a group subscription and, if valid, impose it upon current's task
+ * security record.
+ */
+int set_current_groups(struct group_info *group_info)
+{
+	struct cred *new;
+	int ret;
+
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+
+	ret = set_groups(new, group_info);
+	if (ret < 0) {
+		abort_creds(new);
+		return ret;
+	}
+
+	return commit_creds(new);
+}
+
 EXPORT_SYMBOL(set_current_groups);
 
 asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist)
 {
-	int i = 0;
-
-	/*
-	 *	SMP: Nobody else can change our grouplist. Thus we are
-	 *	safe.
-	 */
+	const struct cred *cred = current_cred();
+	int i;
 
 	if (gidsetsize < 0)
 		return -EINVAL;
 
 	/* no need to grab task_lock here; it cannot change */
-	i = current->group_info->ngroups;
+	i = cred->group_info->ngroups;
 	if (gidsetsize) {
 		if (i > gidsetsize) {
 			i = -EINVAL;
 			goto out;
 		}
-		if (groups_to_user(grouplist, current->group_info)) {
+		if (groups_to_user(grouplist, cred->group_info)) {
 			i = -EFAULT;
 			goto out;
 		}
@@ -1296,9 +1368,11 @@
  */
 int in_group_p(gid_t grp)
 {
+	const struct cred *cred = current_cred();
 	int retval = 1;
-	if (grp != current->fsgid)
-		retval = groups_search(current->group_info, grp);
+
+	if (grp != cred->fsgid)
+		retval = groups_search(cred->group_info, grp);
 	return retval;
 }
 
@@ -1306,9 +1380,11 @@
 
 int in_egroup_p(gid_t grp)
 {
+	const struct cred *cred = current_cred();
 	int retval = 1;
-	if (grp != current->egid)
-		retval = groups_search(current->group_info, grp);
+
+	if (grp != cred->egid)
+		retval = groups_search(cred->group_info, grp);
 	return retval;
 }
 
@@ -1624,50 +1700,56 @@
 asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
 			  unsigned long arg4, unsigned long arg5)
 {
-	long error = 0;
+	struct task_struct *me = current;
+	unsigned char comm[sizeof(me->comm)];
+	long error;
 
-	if (security_task_prctl(option, arg2, arg3, arg4, arg5, &error))
+	error = security_task_prctl(option, arg2, arg3, arg4, arg5);
+	if (error != -ENOSYS)
 		return error;
 
+	error = 0;
 	switch (option) {
 		case PR_SET_PDEATHSIG:
 			if (!valid_signal(arg2)) {
 				error = -EINVAL;
 				break;
 			}
-			current->pdeath_signal = arg2;
+			me->pdeath_signal = arg2;
+			error = 0;
 			break;
 		case PR_GET_PDEATHSIG:
-			error = put_user(current->pdeath_signal, (int __user *)arg2);
+			error = put_user(me->pdeath_signal, (int __user *)arg2);
 			break;
 		case PR_GET_DUMPABLE:
-			error = get_dumpable(current->mm);
+			error = get_dumpable(me->mm);
 			break;
 		case PR_SET_DUMPABLE:
 			if (arg2 < 0 || arg2 > 1) {
 				error = -EINVAL;
 				break;
 			}
-			set_dumpable(current->mm, arg2);
+			set_dumpable(me->mm, arg2);
+			error = 0;
 			break;
 
 		case PR_SET_UNALIGN:
-			error = SET_UNALIGN_CTL(current, arg2);
+			error = SET_UNALIGN_CTL(me, arg2);
 			break;
 		case PR_GET_UNALIGN:
-			error = GET_UNALIGN_CTL(current, arg2);
+			error = GET_UNALIGN_CTL(me, arg2);
 			break;
 		case PR_SET_FPEMU:
-			error = SET_FPEMU_CTL(current, arg2);
+			error = SET_FPEMU_CTL(me, arg2);
 			break;
 		case PR_GET_FPEMU:
-			error = GET_FPEMU_CTL(current, arg2);
+			error = GET_FPEMU_CTL(me, arg2);
 			break;
 		case PR_SET_FPEXC:
-			error = SET_FPEXC_CTL(current, arg2);
+			error = SET_FPEXC_CTL(me, arg2);
 			break;
 		case PR_GET_FPEXC:
-			error = GET_FPEXC_CTL(current, arg2);
+			error = GET_FPEXC_CTL(me, arg2);
 			break;
 		case PR_GET_TIMING:
 			error = PR_TIMING_STATISTICAL;
@@ -1675,33 +1757,28 @@
 		case PR_SET_TIMING:
 			if (arg2 != PR_TIMING_STATISTICAL)
 				error = -EINVAL;
+			else
+				error = 0;
 			break;
 
-		case PR_SET_NAME: {
-			struct task_struct *me = current;
-			unsigned char ncomm[sizeof(me->comm)];
-
-			ncomm[sizeof(me->comm)-1] = 0;
-			if (strncpy_from_user(ncomm, (char __user *)arg2,
-						sizeof(me->comm)-1) < 0)
+		case PR_SET_NAME:
+			comm[sizeof(me->comm)-1] = 0;
+			if (strncpy_from_user(comm, (char __user *)arg2,
+					      sizeof(me->comm) - 1) < 0)
 				return -EFAULT;
-			set_task_comm(me, ncomm);
+			set_task_comm(me, comm);
 			return 0;
-		}
-		case PR_GET_NAME: {
-			struct task_struct *me = current;
-			unsigned char tcomm[sizeof(me->comm)];
-
-			get_task_comm(tcomm, me);
-			if (copy_to_user((char __user *)arg2, tcomm, sizeof(tcomm)))
+		case PR_GET_NAME:
+			get_task_comm(comm, me);
+			if (copy_to_user((char __user *)arg2, comm,
+					 sizeof(comm)))
 				return -EFAULT;
 			return 0;
-		}
 		case PR_GET_ENDIAN:
-			error = GET_ENDIAN(current, arg2);
+			error = GET_ENDIAN(me, arg2);
 			break;
 		case PR_SET_ENDIAN:
-			error = SET_ENDIAN(current, arg2);
+			error = SET_ENDIAN(me, arg2);
 			break;
 
 		case PR_GET_SECCOMP:
@@ -1725,6 +1802,7 @@
 					current->default_timer_slack_ns;
 			else
 				current->timer_slack_ns = arg2;
+			error = 0;
 			break;
 		default:
 			error = -EINVAL;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 3d56fe7..9d52b57 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1651,7 +1651,7 @@
 
 static int test_perm(int mode, int op)
 {
-	if (!current->euid)
+	if (!current_euid())
 		mode >>= 6;
 	else if (in_egroup_p(0))
 		mode >>= 3;
diff --git a/kernel/timer.c b/kernel/timer.c
index dbd50fa..566257d 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1192,25 +1192,25 @@
 asmlinkage long sys_getuid(void)
 {
 	/* Only we change this so SMP safe */
-	return current->uid;
+	return current_uid();
 }
 
 asmlinkage long sys_geteuid(void)
 {
 	/* Only we change this so SMP safe */
-	return current->euid;
+	return current_euid();
 }
 
 asmlinkage long sys_getgid(void)
 {
 	/* Only we change this so SMP safe */
-	return current->gid;
+	return current_gid();
 }
 
 asmlinkage long sys_getegid(void)
 {
 	/* Only we change this so SMP safe */
-	return  current->egid;
+	return  current_egid();
 }
 
 #endif
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index d86e325..1ee9e4e 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -246,7 +246,7 @@
 
 	memcpy(data->comm, tsk->comm, TASK_COMM_LEN);
 	data->pid = tsk->pid;
-	data->uid = tsk->uid;
+	data->uid = task_uid(tsk);
 	data->nice = tsk->static_prio - 20 - MAX_RT_PRIO;
 	data->policy = tsk->policy;
 	data->rt_priority = tsk->rt_priority;
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 8ebcd85..2dc06ab 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -27,6 +27,7 @@
  */
 void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
 {
+	const struct cred *tcred;
 	struct timespec uptime, ts;
 	u64 ac_etime;
 
@@ -53,10 +54,11 @@
 		stats->ac_flag |= AXSIG;
 	stats->ac_nice	 = task_nice(tsk);
 	stats->ac_sched	 = tsk->policy;
-	stats->ac_uid	 = tsk->uid;
-	stats->ac_gid	 = tsk->gid;
 	stats->ac_pid	 = tsk->pid;
 	rcu_read_lock();
+	tcred = __task_cred(tsk);
+	stats->ac_uid	 = tcred->uid;
+	stats->ac_gid	 = tcred->gid;
 	stats->ac_ppid	 = pid_alive(tsk) ?
 				rcu_dereference(tsk->real_parent)->tgid : 0;
 	rcu_read_unlock();
diff --git a/kernel/uid16.c b/kernel/uid16.c
index 3e41c16..2460c31 100644
--- a/kernel/uid16.c
+++ b/kernel/uid16.c
@@ -84,11 +84,12 @@
 
 asmlinkage long sys_getresuid16(old_uid_t __user *ruid, old_uid_t __user *euid, old_uid_t __user *suid)
 {
+	const struct cred *cred = current_cred();
 	int retval;
 
-	if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
-	    !(retval = put_user(high2lowuid(current->euid), euid)))
-		retval = put_user(high2lowuid(current->suid), suid);
+	if (!(retval   = put_user(high2lowuid(cred->uid),  ruid)) &&
+	    !(retval   = put_user(high2lowuid(cred->euid), euid)))
+		retval = put_user(high2lowuid(cred->suid), suid);
 
 	return retval;
 }
@@ -104,11 +105,12 @@
 
 asmlinkage long sys_getresgid16(old_gid_t __user *rgid, old_gid_t __user *egid, old_gid_t __user *sgid)
 {
+	const struct cred *cred = current_cred();
 	int retval;
 
-	if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
-	    !(retval = put_user(high2lowgid(current->egid), egid)))
-		retval = put_user(high2lowgid(current->sgid), sgid);
+	if (!(retval   = put_user(high2lowgid(cred->gid),  rgid)) &&
+	    !(retval   = put_user(high2lowgid(cred->egid), egid)))
+		retval = put_user(high2lowgid(cred->sgid), sgid);
 
 	return retval;
 }
@@ -161,25 +163,24 @@
 
 asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist)
 {
-	int i = 0;
+	const struct cred *cred = current_cred();
+	int i;
 
 	if (gidsetsize < 0)
 		return -EINVAL;
 
-	get_group_info(current->group_info);
-	i = current->group_info->ngroups;
+	i = cred->group_info->ngroups;
 	if (gidsetsize) {
 		if (i > gidsetsize) {
 			i = -EINVAL;
 			goto out;
 		}
-		if (groups16_to_user(grouplist, current->group_info)) {
+		if (groups16_to_user(grouplist, cred->group_info)) {
 			i = -EFAULT;
 			goto out;
 		}
 	}
 out:
-	put_group_info(current->group_info);
 	return i;
 }
 
@@ -210,20 +211,20 @@
 
 asmlinkage long sys_getuid16(void)
 {
-	return high2lowuid(current->uid);
+	return high2lowuid(current_uid());
 }
 
 asmlinkage long sys_geteuid16(void)
 {
-	return high2lowuid(current->euid);
+	return high2lowuid(current_euid());
 }
 
 asmlinkage long sys_getgid16(void)
 {
-	return high2lowgid(current->gid);
+	return high2lowgid(current_gid());
 }
 
 asmlinkage long sys_getegid16(void)
 {
-	return high2lowgid(current->egid);
+	return high2lowgid(current_egid());
 }
diff --git a/kernel/user.c b/kernel/user.c
index 39d6159..97202cb 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -16,12 +16,13 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/user_namespace.h>
+#include "cred-internals.h"
 
 struct user_namespace init_user_ns = {
 	.kref = {
-		.refcount	= ATOMIC_INIT(2),
+		.refcount	= ATOMIC_INIT(1),
 	},
-	.root_user = &root_user,
+	.creator = &root_user,
 };
 EXPORT_SYMBOL_GPL(init_user_ns);
 
@@ -47,12 +48,14 @@
  */
 static DEFINE_SPINLOCK(uidhash_lock);
 
+/* root_user.__count is 2, 1 for init task cred, 1 for init_user_ns->creator */
 struct user_struct root_user = {
-	.__count	= ATOMIC_INIT(1),
+	.__count	= ATOMIC_INIT(2),
 	.processes	= ATOMIC_INIT(1),
 	.files		= ATOMIC_INIT(0),
 	.sigpending	= ATOMIC_INIT(0),
 	.locked_shm     = 0,
+	.user_ns	= &init_user_ns,
 #ifdef CONFIG_USER_SCHED
 	.tg		= &init_task_group,
 #endif
@@ -104,16 +107,10 @@
 	return rc;
 }
 
-static void sched_switch_user(struct task_struct *p)
-{
-	sched_move_task(p);
-}
-
 #else	/* CONFIG_USER_SCHED */
 
 static void sched_destroy_user(struct user_struct *up) { }
 static int sched_create_user(struct user_struct *up) { return 0; }
-static void sched_switch_user(struct task_struct *p) { }
 
 #endif	/* CONFIG_USER_SCHED */
 
@@ -319,12 +316,13 @@
  * IRQ state (as stored in flags) is restored and uidhash_lock released
  * upon function exit.
  */
-static inline void free_user(struct user_struct *up, unsigned long flags)
+static void free_user(struct user_struct *up, unsigned long flags)
 {
 	/* restore back the count */
 	atomic_inc(&up->__count);
 	spin_unlock_irqrestore(&uidhash_lock, flags);
 
+	put_user_ns(up->user_ns);
 	INIT_WORK(&up->work, remove_user_sysfs_dir);
 	schedule_work(&up->work);
 }
@@ -340,13 +338,14 @@
  * IRQ state (as stored in flags) is restored and uidhash_lock released
  * upon function exit.
  */
-static inline void free_user(struct user_struct *up, unsigned long flags)
+static void free_user(struct user_struct *up, unsigned long flags)
 {
 	uid_hash_remove(up);
 	spin_unlock_irqrestore(&uidhash_lock, flags);
 	sched_destroy_user(up);
 	key_put(up->uid_keyring);
 	key_put(up->session_keyring);
+	put_user_ns(up->user_ns);
 	kmem_cache_free(uid_cachep, up);
 }
 
@@ -362,7 +361,7 @@
 {
 	struct user_struct *ret;
 	unsigned long flags;
-	struct user_namespace *ns = current->nsproxy->user_ns;
+	struct user_namespace *ns = current_user_ns();
 
 	spin_lock_irqsave(&uidhash_lock, flags);
 	ret = uid_hash_find(uid, uidhashentry(ns, uid));
@@ -409,6 +408,8 @@
 		if (sched_create_user(new) < 0)
 			goto out_free_user;
 
+		new->user_ns = get_user_ns(ns);
+
 		if (uids_user_create(new))
 			goto out_destoy_sched;
 
@@ -432,7 +433,6 @@
 			up = new;
 		}
 		spin_unlock_irq(&uidhash_lock);
-
 	}
 
 	uids_mutex_unlock();
@@ -441,6 +441,7 @@
 
 out_destoy_sched:
 	sched_destroy_user(new);
+	put_user_ns(new->user_ns);
 out_free_user:
 	kmem_cache_free(uid_cachep, new);
 out_unlock:
@@ -448,63 +449,6 @@
 	return NULL;
 }
 
-void switch_uid(struct user_struct *new_user)
-{
-	struct user_struct *old_user;
-
-	/* What if a process setreuid()'s and this brings the
-	 * new uid over his NPROC rlimit?  We can check this now
-	 * cheaply with the new uid cache, so if it matters
-	 * we should be checking for it.  -DaveM
-	 */
-	old_user = current->user;
-	atomic_inc(&new_user->processes);
-	atomic_dec(&old_user->processes);
-	switch_uid_keyring(new_user);
-	current->user = new_user;
-	sched_switch_user(current);
-
-	/*
-	 * We need to synchronize with __sigqueue_alloc()
-	 * doing a get_uid(p->user).. If that saw the old
-	 * user value, we need to wait until it has exited
-	 * its critical region before we can free the old
-	 * structure.
-	 */
-	smp_mb();
-	spin_unlock_wait(&current->sighand->siglock);
-
-	free_uid(old_user);
-	suid_keys(current);
-}
-
-#ifdef CONFIG_USER_NS
-void release_uids(struct user_namespace *ns)
-{
-	int i;
-	unsigned long flags;
-	struct hlist_head *head;
-	struct hlist_node *nd;
-
-	spin_lock_irqsave(&uidhash_lock, flags);
-	/*
-	 * collapse the chains so that the user_struct-s will
-	 * be still alive, but not in hashes. subsequent free_uid()
-	 * will free them.
-	 */
-	for (i = 0; i < UIDHASH_SZ; i++) {
-		head = ns->uidhash_table + i;
-		while (!hlist_empty(head)) {
-			nd = head->first;
-			hlist_del_init(nd);
-		}
-	}
-	spin_unlock_irqrestore(&uidhash_lock, flags);
-
-	free_uid(ns->root_user);
-}
-#endif
-
 static int __init uid_cache_init(void)
 {
 	int n;
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index 532858f..7908431 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -9,60 +9,55 @@
 #include <linux/nsproxy.h>
 #include <linux/slab.h>
 #include <linux/user_namespace.h>
+#include <linux/cred.h>
 
 /*
- * Clone a new ns copying an original user ns, setting refcount to 1
- * @old_ns: namespace to clone
- * Return NULL on error (failure to kmalloc), new ns otherwise
+ * Create a new user namespace, deriving the creator from the user in the
+ * passed credentials, and replacing that user with the new root user for the
+ * new namespace.
+ *
+ * This is called by copy_creds(), which will finish setting the target task's
+ * credentials.
  */
-static struct user_namespace *clone_user_ns(struct user_namespace *old_ns)
+int create_user_ns(struct cred *new)
 {
 	struct user_namespace *ns;
-	struct user_struct *new_user;
+	struct user_struct *root_user;
 	int n;
 
 	ns = kmalloc(sizeof(struct user_namespace), GFP_KERNEL);
 	if (!ns)
-		return ERR_PTR(-ENOMEM);
+		return -ENOMEM;
 
 	kref_init(&ns->kref);
 
 	for (n = 0; n < UIDHASH_SZ; ++n)
 		INIT_HLIST_HEAD(ns->uidhash_table + n);
 
-	/* Insert new root user.  */
-	ns->root_user = alloc_uid(ns, 0);
-	if (!ns->root_user) {
+	/* Alloc new root user.  */
+	root_user = alloc_uid(ns, 0);
+	if (!root_user) {
 		kfree(ns);
-		return ERR_PTR(-ENOMEM);
+		return -ENOMEM;
 	}
 
-	/* Reset current->user with a new one */
-	new_user = alloc_uid(ns, current->uid);
-	if (!new_user) {
-		free_uid(ns->root_user);
-		kfree(ns);
-		return ERR_PTR(-ENOMEM);
-	}
+	/* set the new root user in the credentials under preparation */
+	ns->creator = new->user;
+	new->user = root_user;
+	new->uid = new->euid = new->suid = new->fsuid = 0;
+	new->gid = new->egid = new->sgid = new->fsgid = 0;
+	put_group_info(new->group_info);
+	new->group_info = get_group_info(&init_groups);
+#ifdef CONFIG_KEYS
+	key_put(new->request_key_auth);
+	new->request_key_auth = NULL;
+#endif
+	/* tgcred will be cleared in our caller bc CLONE_THREAD won't be set */
 
-	switch_uid(new_user);
-	return ns;
-}
+	/* alloc_uid() incremented the userns refcount.  Just set it to 1 */
+	kref_set(&ns->kref, 1);
 
-struct user_namespace * copy_user_ns(int flags, struct user_namespace *old_ns)
-{
-	struct user_namespace *new_ns;
-
-	BUG_ON(!old_ns);
-	get_user_ns(old_ns);
-
-	if (!(flags & CLONE_NEWUSER))
-		return old_ns;
-
-	new_ns = clone_user_ns(old_ns);
-
-	put_user_ns(old_ns);
-	return new_ns;
+	return 0;
 }
 
 void free_user_ns(struct kref *kref)
@@ -70,7 +65,7 @@
 	struct user_namespace *ns;
 
 	ns = container_of(kref, struct user_namespace, kref);
-	release_uids(ns);
+	free_uid(ns->creator);
 	kfree(ns);
 }
 EXPORT_SYMBOL(free_user_ns);
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index d4dc69d..4952322 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -84,21 +84,21 @@
 static cpumask_t cpu_populated_map __read_mostly;
 
 /* If it's single threaded, it isn't in the list of workqueues. */
-static inline int is_single_threaded(struct workqueue_struct *wq)
+static inline int is_wq_single_threaded(struct workqueue_struct *wq)
 {
 	return wq->singlethread;
 }
 
 static const cpumask_t *wq_cpu_map(struct workqueue_struct *wq)
 {
-	return is_single_threaded(wq)
+	return is_wq_single_threaded(wq)
 		? &cpu_singlethread_map : &cpu_populated_map;
 }
 
 static
 struct cpu_workqueue_struct *wq_per_cpu(struct workqueue_struct *wq, int cpu)
 {
-	if (unlikely(is_single_threaded(wq)))
+	if (unlikely(is_wq_single_threaded(wq)))
 		cpu = singlethread_cpu;
 	return per_cpu_ptr(wq->cpu_wq, cpu);
 }
@@ -769,7 +769,7 @@
 {
 	struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
 	struct workqueue_struct *wq = cwq->wq;
-	const char *fmt = is_single_threaded(wq) ? "%s" : "%s/%d";
+	const char *fmt = is_wq_single_threaded(wq) ? "%s" : "%s/%d";
 	struct task_struct *p;
 
 	p = kthread_create(worker_thread, cwq, fmt, wq->name, cpu);
diff --git a/lib/Makefile b/lib/Makefile
index 7cb65d8..80fe8a3 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -11,7 +11,7 @@
 	 rbtree.o radix-tree.o dump_stack.o \
 	 idr.o int_sqrt.o extable.o prio_tree.o \
 	 sha1.o irq_regs.o reciprocal_div.o argv_split.o \
-	 proportions.o prio_heap.o ratelimit.o show_mem.o
+	 proportions.o prio_heap.o ratelimit.o show_mem.o is_single_threaded.o
 
 lib-$(CONFIG_MMU) += ioremap.o
 lib-$(CONFIG_SMP) += cpumask.o
diff --git a/lib/is_single_threaded.c b/lib/is_single_threaded.c
new file mode 100644
index 0000000..f1ed2fe
--- /dev/null
+++ b/lib/is_single_threaded.c
@@ -0,0 +1,45 @@
+/* Function to determine if a thread group is single threaded or not
+ *
+ * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ * - Derived from security/selinux/hooks.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#include <linux/sched.h>
+
+/**
+ * is_single_threaded - Determine if a thread group is single-threaded or not
+ * @p: A task in the thread group in question
+ *
+ * This returns true if the thread group to which a task belongs is single
+ * threaded, false if it is not.
+ */
+bool is_single_threaded(struct task_struct *p)
+{
+	struct task_struct *g, *t;
+	struct mm_struct *mm = p->mm;
+
+	if (atomic_read(&p->signal->count) != 1)
+		goto no;
+
+	if (atomic_read(&p->mm->mm_users) != 1) {
+		read_lock(&tasklist_lock);
+		do_each_thread(g, t) {
+			if (t->mm == mm && t != p)
+				goto no_unlock;
+		} while_each_thread(g, t);
+		read_unlock(&tasklist_lock);
+	}
+
+	return true;
+
+no_unlock:
+	read_unlock(&tasklist_lock);
+no:
+	return false;
+}
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index e9493b1..e412ffa 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1114,6 +1114,7 @@
 		const unsigned long __user *old_nodes,
 		const unsigned long __user *new_nodes)
 {
+	const struct cred *cred = current_cred(), *tcred;
 	struct mm_struct *mm;
 	struct task_struct *task;
 	nodemask_t old;
@@ -1148,12 +1149,16 @@
 	 * capabilities, superuser privileges or the same
 	 * userid as the target process.
 	 */
-	if ((current->euid != task->suid) && (current->euid != task->uid) &&
-	    (current->uid != task->suid) && (current->uid != task->uid) &&
+	rcu_read_lock();
+	tcred = __task_cred(task);
+	if (cred->euid != tcred->suid && cred->euid != tcred->uid &&
+	    cred->uid  != tcred->suid && cred->uid  != tcred->uid &&
 	    !capable(CAP_SYS_NICE)) {
+		rcu_read_unlock();
 		err = -EPERM;
 		goto out;
 	}
+	rcu_read_unlock();
 
 	task_nodes = cpuset_mems_allowed(task);
 	/* Is the user allowed to access the target nodes? */
diff --git a/mm/migrate.c b/mm/migrate.c
index 1e0d6b2..0461fc6 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1042,6 +1042,7 @@
 			const int __user *nodes,
 			int __user *status, int flags)
 {
+	const struct cred *cred = current_cred(), *tcred;
 	struct task_struct *task;
 	struct mm_struct *mm;
 	int err;
@@ -1072,12 +1073,16 @@
 	 * capabilities, superuser privileges or the same
 	 * userid as the target process.
 	 */
-	if ((current->euid != task->suid) && (current->euid != task->uid) &&
-	    (current->uid != task->suid) && (current->uid != task->uid) &&
+	rcu_read_lock();
+	tcred = __task_cred(task);
+	if (cred->euid != tcred->suid && cred->euid != tcred->uid &&
+	    cred->uid  != tcred->suid && cred->uid  != tcred->uid &&
 	    !capable(CAP_SYS_NICE)) {
+		rcu_read_unlock();
 		err = -EPERM;
 		goto out;
 	}
+	rcu_read_unlock();
 
  	err = security_task_movememory(task);
  	if (err)
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index a0a0190..558f9af 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -128,8 +128,8 @@
 	 * Superuser processes are usually more important, so we make it
 	 * less likely that we kill those.
 	 */
-	if (has_capability(p, CAP_SYS_ADMIN) ||
-	    has_capability(p, CAP_SYS_RESOURCE))
+	if (has_capability_noaudit(p, CAP_SYS_ADMIN) ||
+	    has_capability_noaudit(p, CAP_SYS_RESOURCE))
 		points /= 4;
 
 	/*
@@ -138,7 +138,7 @@
 	 * tend to only have this flag set on applications they think
 	 * of as important.
 	 */
-	if (has_capability(p, CAP_SYS_RAWIO))
+	if (has_capability_noaudit(p, CAP_SYS_RAWIO))
 		points /= 4;
 
 	/*
@@ -299,9 +299,9 @@
 
 		task_lock(p);
 		printk(KERN_INFO "[%5d] %5d %5d %8lu %8lu %3d     %3d %s\n",
-		       p->pid, p->uid, p->tgid, p->mm->total_vm,
-		       get_mm_rss(p->mm), (int)task_cpu(p), p->oomkilladj,
-		       p->comm);
+		       p->pid, __task_cred(p)->uid, p->tgid,
+		       p->mm->total_vm, get_mm_rss(p->mm), (int)task_cpu(p),
+		       p->oomkilladj, p->comm);
 		task_unlock(p);
 	} while_each_thread(g, p);
 }
diff --git a/mm/shmem.c b/mm/shmem.c
index 0ed0752..f1b0d48 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1513,8 +1513,8 @@
 	inode = new_inode(sb);
 	if (inode) {
 		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
+		inode->i_uid = current_fsuid();
+		inode->i_gid = current_fsgid();
 		inode->i_blocks = 0;
 		inode->i_mapping->backing_dev_info = &shmem_backing_dev_info;
 		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
@@ -2278,8 +2278,8 @@
 	sbinfo->max_blocks = 0;
 	sbinfo->max_inodes = 0;
 	sbinfo->mode = S_IRWXUGO | S_ISVTX;
-	sbinfo->uid = current->fsuid;
-	sbinfo->gid = current->fsgid;
+	sbinfo->uid = current_fsuid();
+	sbinfo->gid = current_fsgid();
 	sbinfo->mpol = NULL;
 	sb->s_fs_info = sbinfo;
 
diff --git a/net/9p/client.c b/net/9p/client.c
index 4b52945..821f1ec 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -627,7 +627,7 @@
 	memset(&fid->qid, 0, sizeof(struct p9_qid));
 	fid->mode = -1;
 	fid->rdir_fpos = 0;
-	fid->uid = current->fsuid;
+	fid->uid = current_fsuid();
 	fid->clnt = clnt;
 	fid->aux = NULL;
 
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 28c7157..00d9e5e 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1045,7 +1045,7 @@
 	if (addr->fsa_ax25.sax25_family != AF_AX25)
 		return -EINVAL;
 
-	user = ax25_findbyuid(current->euid);
+	user = ax25_findbyuid(current_euid());
 	if (user) {
 		call = user->call;
 		ax25_uid_put(user);
diff --git a/net/ax25/ax25_route.c b/net/ax25/ax25_route.c
index 8672cd8..c833ba4 100644
--- a/net/ax25/ax25_route.c
+++ b/net/ax25/ax25_route.c
@@ -421,7 +421,7 @@
 		goto put;
 	}
 
-	user = ax25_findbyuid(current->euid);
+	user = ax25_findbyuid(current_euid());
 	if (user) {
 		ax25->source_addr = user->call;
 		ax25_uid_put(user);
diff --git a/net/core/dev.c b/net/core/dev.c
index 9174c77..89912ae 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2961,6 +2961,8 @@
 static int __dev_set_promiscuity(struct net_device *dev, int inc)
 {
 	unsigned short old_flags = dev->flags;
+	uid_t uid;
+	gid_t gid;
 
 	ASSERT_RTNL();
 
@@ -2985,15 +2987,17 @@
 		printk(KERN_INFO "device %s %s promiscuous mode\n",
 		       dev->name, (dev->flags & IFF_PROMISC) ? "entered" :
 							       "left");
-		if (audit_enabled)
+		if (audit_enabled) {
+			current_uid_gid(&uid, &gid);
 			audit_log(current->audit_context, GFP_ATOMIC,
 				AUDIT_ANOM_PROMISCUOUS,
 				"dev=%s prom=%d old_prom=%d auid=%u uid=%u gid=%u ses=%u",
 				dev->name, (dev->flags & IFF_PROMISC),
 				(old_flags & IFF_PROMISC),
 				audit_get_loginuid(current),
-				current->uid, current->gid,
+				uid, gid,
 				audit_get_sessionid(current));
+		}
 
 		dev_change_rx_flags(dev, IFF_PROMISC);
 	}
diff --git a/net/core/scm.c b/net/core/scm.c
index b12303d..b7ba91b 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -44,11 +44,13 @@
 
 static __inline__ int scm_check_creds(struct ucred *creds)
 {
+	const struct cred *cred = current_cred();
+
 	if ((creds->pid == task_tgid_vnr(current) || capable(CAP_SYS_ADMIN)) &&
-	    ((creds->uid == current->uid || creds->uid == current->euid ||
-	      creds->uid == current->suid) || capable(CAP_SETUID)) &&
-	    ((creds->gid == current->gid || creds->gid == current->egid ||
-	      creds->gid == current->sgid) || capable(CAP_SETGID))) {
+	    ((creds->uid == cred->uid   || creds->uid == cred->euid ||
+	      creds->uid == cred->suid) || capable(CAP_SETUID)) &&
+	    ((creds->gid == cred->gid   || creds->gid == cred->egid ||
+	      creds->gid == cred->sgid) || capable(CAP_SETGID))) {
 	       return 0;
 	}
 	return -EPERM;
diff --git a/net/ipv4/netfilter/ipt_LOG.c b/net/ipv4/netfilter/ipt_LOG.c
index fc6ce04..7b5dbe1 100644
--- a/net/ipv4/netfilter/ipt_LOG.c
+++ b/net/ipv4/netfilter/ipt_LOG.c
@@ -340,8 +340,8 @@
 		read_lock_bh(&skb->sk->sk_callback_lock);
 		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
 			printk("UID=%u GID=%u ",
-				skb->sk->sk_socket->file->f_uid,
-				skb->sk->sk_socket->file->f_gid);
+				skb->sk->sk_socket->file->f_cred->fsuid,
+				skb->sk->sk_socket->file->f_cred->fsgid);
 		read_unlock_bh(&skb->sk->sk_callback_lock);
 	}
 
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 37a4e77..bd3c7b96 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -388,7 +388,7 @@
 		fl->owner = current->pid;
 		break;
 	case IPV6_FL_S_USER:
-		fl->owner = current->euid;
+		fl->owner = current_euid();
 		break;
 	default:
 		err = -EINVAL;
diff --git a/net/ipv6/netfilter/ip6t_LOG.c b/net/ipv6/netfilter/ip6t_LOG.c
index caa441d..871d157 100644
--- a/net/ipv6/netfilter/ip6t_LOG.c
+++ b/net/ipv6/netfilter/ip6t_LOG.c
@@ -364,8 +364,8 @@
 		read_lock_bh(&skb->sk->sk_callback_lock);
 		if (skb->sk->sk_socket && skb->sk->sk_socket->file)
 			printk("UID=%u GID=%u ",
-				skb->sk->sk_socket->file->f_uid,
-				skb->sk->sk_socket->file->f_gid);
+				skb->sk->sk_socket->file->f_cred->fsuid,
+				skb->sk->sk_socket->file->f_cred->fsgid);
 		read_unlock_bh(&skb->sk->sk_callback_lock);
 	}
 
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index 41e0105..38f9efd 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -474,8 +474,9 @@
 	if (skb->sk) {
 		read_lock_bh(&skb->sk->sk_callback_lock);
 		if (skb->sk->sk_socket && skb->sk->sk_socket->file) {
-			__be32 uid = htonl(skb->sk->sk_socket->file->f_uid);
-			__be32 gid = htonl(skb->sk->sk_socket->file->f_gid);
+			struct file *file = skb->sk->sk_socket->file;
+			__be32 uid = htonl(file->f_cred->fsuid);
+			__be32 gid = htonl(file->f_cred->fsgid);
 			/* need to unlock here since NLA_PUT may goto */
 			read_unlock_bh(&skb->sk->sk_callback_lock);
 			NLA_PUT_BE32(inst->skb, NFULA_UID, uid);
diff --git a/net/netfilter/xt_owner.c b/net/netfilter/xt_owner.c
index f19ebd9..22b2a5e 100644
--- a/net/netfilter/xt_owner.c
+++ b/net/netfilter/xt_owner.c
@@ -34,12 +34,12 @@
 		return false;
 
 	if (info->match & IPT_OWNER_UID)
-		if ((filp->f_uid != info->uid) ^
+		if ((filp->f_cred->fsuid != info->uid) ^
 		    !!(info->invert & IPT_OWNER_UID))
 			return false;
 
 	if (info->match & IPT_OWNER_GID)
-		if ((filp->f_gid != info->gid) ^
+		if ((filp->f_cred->fsgid != info->gid) ^
 		    !!(info->invert & IPT_OWNER_GID))
 			return false;
 
@@ -60,12 +60,12 @@
 		return false;
 
 	if (info->match & IP6T_OWNER_UID)
-		if ((filp->f_uid != info->uid) ^
+		if ((filp->f_cred->fsuid != info->uid) ^
 		    !!(info->invert & IP6T_OWNER_UID))
 			return false;
 
 	if (info->match & IP6T_OWNER_GID)
-		if ((filp->f_gid != info->gid) ^
+		if ((filp->f_cred->fsgid != info->gid) ^
 		    !!(info->invert & IP6T_OWNER_GID))
 			return false;
 
@@ -93,14 +93,14 @@
 		       (XT_OWNER_UID | XT_OWNER_GID)) == 0;
 
 	if (info->match & XT_OWNER_UID)
-		if ((filp->f_uid >= info->uid_min &&
-		    filp->f_uid <= info->uid_max) ^
+		if ((filp->f_cred->fsuid >= info->uid_min &&
+		    filp->f_cred->fsuid <= info->uid_max) ^
 		    !(info->invert & XT_OWNER_UID))
 			return false;
 
 	if (info->match & XT_OWNER_GID)
-		if ((filp->f_gid >= info->gid_min &&
-		    filp->f_gid <= info->gid_max) ^
+		if ((filp->f_cred->fsgid >= info->gid_min &&
+		    filp->f_cred->fsgid <= info->gid_max) ^
 		    !(info->invert & XT_OWNER_GID))
 			return false;
 
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 9f1ea4a..e9c05b8 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -609,7 +609,7 @@
 	} else {
 		source = &addr->fsa_ax25.sax25_call;
 
-		user = ax25_findbyuid(current->euid);
+		user = ax25_findbyuid(current_euid());
 		if (user) {
 			nr->user_addr   = user->call;
 			ax25_uid_put(user);
@@ -683,7 +683,7 @@
 		}
 		source = (ax25_address *)dev->dev_addr;
 
-		user = ax25_findbyuid(current->euid);
+		user = ax25_findbyuid(current_euid());
 		if (user) {
 			nr->user_addr   = user->call;
 			ax25_uid_put(user);
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 0c1cc76..0139264 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -690,7 +690,7 @@
 
 	source = &addr->srose_call;
 
-	user = ax25_findbyuid(current->euid);
+	user = ax25_findbyuid(current_euid());
 	if (user) {
 		rose->source_call = user->call;
 		ax25_uid_put(user);
@@ -791,7 +791,7 @@
 			goto out_release;
 		}
 
-		user = ax25_findbyuid(current->euid);
+		user = ax25_findbyuid(current_euid());
 		if (!user) {
 			err = -EINVAL;
 			goto out_release;
diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c
index 9a8ff68..ad8c7a7 100644
--- a/net/rxrpc/ar-key.c
+++ b/net/rxrpc/ar-key.c
@@ -287,6 +287,7 @@
 			      time_t expiry,
 			      u32 kvno)
 {
+	const struct cred *cred = current_cred();
 	struct key *key;
 	int ret;
 
@@ -297,7 +298,7 @@
 
 	_enter("");
 
-	key = key_alloc(&key_type_rxrpc, "x", 0, 0, current, 0,
+	key = key_alloc(&key_type_rxrpc, "x", 0, 0, cred, 0,
 			KEY_ALLOC_NOT_IN_QUOTA);
 	if (IS_ERR(key)) {
 		_leave(" = -ENOMEM [alloc %ld]", PTR_ERR(key));
@@ -340,10 +341,11 @@
  */
 struct key *rxrpc_get_null_key(const char *keyname)
 {
+	const struct cred *cred = current_cred();
 	struct key *key;
 	int ret;
 
-	key = key_alloc(&key_type_rxrpc, keyname, 0, 0, current,
+	key = key_alloc(&key_type_rxrpc, keyname, 0, 0, cred,
 			KEY_POS_SEARCH, KEY_ALLOC_NOT_IN_QUOTA);
 	if (IS_ERR(key))
 		return key;
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 0ebaff6..0ef4e30 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -260,14 +260,14 @@
 static u32 flow_get_skuid(const struct sk_buff *skb)
 {
 	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file)
-		return skb->sk->sk_socket->file->f_uid;
+		return skb->sk->sk_socket->file->f_cred->fsuid;
 	return 0;
 }
 
 static u32 flow_get_skgid(const struct sk_buff *skb)
 {
 	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file)
-		return skb->sk->sk_socket->file->f_gid;
+		return skb->sk->sk_socket->file->f_cred->fsgid;
 	return 0;
 }
 
diff --git a/net/socket.c b/net/socket.c
index 92764d8..b7a562e 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -491,8 +491,8 @@
 	sock = SOCKET_I(inode);
 
 	inode->i_mode = S_IFSOCK | S_IRWXUGO;
-	inode->i_uid = current->fsuid;
-	inode->i_gid = current->fsgid;
+	inode->i_uid = current_fsuid();
+	inode->i_gid = current_fsgid();
 
 	get_cpu_var(sockets_in_use)++;
 	put_cpu_var(sockets_in_use);
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index cb216b2..0443f83 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -350,16 +350,18 @@
 struct rpc_cred *
 rpcauth_lookupcred(struct rpc_auth *auth, int flags)
 {
-	struct auth_cred acred = {
-		.uid = current->fsuid,
-		.gid = current->fsgid,
-		.group_info = current->group_info,
-	};
+	struct auth_cred acred;
 	struct rpc_cred *ret;
+	const struct cred *cred = current_cred();
 
 	dprintk("RPC:       looking up %s cred\n",
 		auth->au_ops->au_name);
-	get_group_info(acred.group_info);
+
+	memset(&acred, 0, sizeof(acred));
+	acred.uid = cred->fsuid;
+	acred.gid = cred->fsgid;
+	acred.group_info = get_group_info(((struct cred *)cred)->group_info);
+
 	ret = auth->au_ops->lookup_cred(auth, &acred, flags);
 	put_group_info(acred.group_info);
 	return ret;
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 66d5ac4..b152e2b 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -467,8 +467,7 @@
 	sk->sk_state		= TCP_LISTEN;
 	/* set credentials so connect can copy them */
 	sk->sk_peercred.pid	= task_tgid_vnr(current);
-	sk->sk_peercred.uid	= current->euid;
-	sk->sk_peercred.gid	= current->egid;
+	current_euid_egid(&sk->sk_peercred.uid, &sk->sk_peercred.gid);
 	err = 0;
 
 out_unlock:
@@ -1126,8 +1125,7 @@
 	newsk->sk_state		= TCP_ESTABLISHED;
 	newsk->sk_type		= sk->sk_type;
 	newsk->sk_peercred.pid	= task_tgid_vnr(current);
-	newsk->sk_peercred.uid	= current->euid;
-	newsk->sk_peercred.gid	= current->egid;
+	current_euid_egid(&newsk->sk_peercred.uid, &newsk->sk_peercred.gid);
 	newu = unix_sk(newsk);
 	newsk->sk_sleep		= &newu->peer_wait;
 	otheru = unix_sk(other);
@@ -1187,8 +1185,9 @@
 	unix_peer(ska)=skb;
 	unix_peer(skb)=ska;
 	ska->sk_peercred.pid = skb->sk_peercred.pid = task_tgid_vnr(current);
-	ska->sk_peercred.uid = skb->sk_peercred.uid = current->euid;
-	ska->sk_peercred.gid = skb->sk_peercred.gid = current->egid;
+	current_euid_egid(&skb->sk_peercred.uid, &skb->sk_peercred.gid);
+	ska->sk_peercred.uid = skb->sk_peercred.uid;
+	ska->sk_peercred.gid = skb->sk_peercred.gid;
 
 	if (ska->sk_type != SOCK_DGRAM) {
 		ska->sk_state = TCP_ESTABLISHED;
diff --git a/security/capability.c b/security/capability.c
index 2458748..b9e3914 100644
--- a/security/capability.c
+++ b/security/capability.c
@@ -32,24 +32,19 @@
 	return 0;
 }
 
-static int cap_bprm_alloc_security(struct linux_binprm *bprm)
+static int cap_bprm_check_security (struct linux_binprm *bprm)
 {
 	return 0;
 }
 
-static void cap_bprm_free_security(struct linux_binprm *bprm)
+static void cap_bprm_committing_creds(struct linux_binprm *bprm)
 {
 }
 
-static void cap_bprm_post_apply_creds(struct linux_binprm *bprm)
+static void cap_bprm_committed_creds(struct linux_binprm *bprm)
 {
 }
 
-static int cap_bprm_check_security(struct linux_binprm *bprm)
-{
-	return 0;
-}
-
 static int cap_sb_alloc_security(struct super_block *sb)
 {
 	return 0;
@@ -330,7 +325,7 @@
 	return 0;
 }
 
-static int cap_dentry_open(struct file *file)
+static int cap_dentry_open(struct file *file, const struct cred *cred)
 {
 	return 0;
 }
@@ -340,15 +335,29 @@
 	return 0;
 }
 
-static int cap_task_alloc_security(struct task_struct *p)
+static void cap_cred_free(struct cred *cred)
+{
+}
+
+static int cap_cred_prepare(struct cred *new, const struct cred *old, gfp_t gfp)
 {
 	return 0;
 }
 
-static void cap_task_free_security(struct task_struct *p)
+static void cap_cred_commit(struct cred *new, const struct cred *old)
 {
 }
 
+static int cap_kernel_act_as(struct cred *new, u32 secid)
+{
+	return 0;
+}
+
+static int cap_kernel_create_files_as(struct cred *new, struct inode *inode)
+{
+	return 0;
+}
+
 static int cap_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
 {
 	return 0;
@@ -750,7 +759,7 @@
 }
 
 #ifdef CONFIG_KEYS
-static int cap_key_alloc(struct key *key, struct task_struct *ctx,
+static int cap_key_alloc(struct key *key, const struct cred *cred,
 			 unsigned long flags)
 {
 	return 0;
@@ -760,7 +769,7 @@
 {
 }
 
-static int cap_key_permission(key_ref_t key_ref, struct task_struct *context,
+static int cap_key_permission(key_ref_t key_ref, const struct cred *cred,
 			      key_perm_t perm)
 {
 	return 0;
@@ -814,8 +823,7 @@
 	set_to_cap_if_null(ops, ptrace_may_access);
 	set_to_cap_if_null(ops, ptrace_traceme);
 	set_to_cap_if_null(ops, capget);
-	set_to_cap_if_null(ops, capset_check);
-	set_to_cap_if_null(ops, capset_set);
+	set_to_cap_if_null(ops, capset);
 	set_to_cap_if_null(ops, acct);
 	set_to_cap_if_null(ops, capable);
 	set_to_cap_if_null(ops, quotactl);
@@ -824,11 +832,9 @@
 	set_to_cap_if_null(ops, syslog);
 	set_to_cap_if_null(ops, settime);
 	set_to_cap_if_null(ops, vm_enough_memory);
-	set_to_cap_if_null(ops, bprm_alloc_security);
-	set_to_cap_if_null(ops, bprm_free_security);
-	set_to_cap_if_null(ops, bprm_apply_creds);
-	set_to_cap_if_null(ops, bprm_post_apply_creds);
-	set_to_cap_if_null(ops, bprm_set_security);
+	set_to_cap_if_null(ops, bprm_set_creds);
+	set_to_cap_if_null(ops, bprm_committing_creds);
+	set_to_cap_if_null(ops, bprm_committed_creds);
 	set_to_cap_if_null(ops, bprm_check_security);
 	set_to_cap_if_null(ops, bprm_secureexec);
 	set_to_cap_if_null(ops, sb_alloc_security);
@@ -890,10 +896,13 @@
 	set_to_cap_if_null(ops, file_receive);
 	set_to_cap_if_null(ops, dentry_open);
 	set_to_cap_if_null(ops, task_create);
-	set_to_cap_if_null(ops, task_alloc_security);
-	set_to_cap_if_null(ops, task_free_security);
+	set_to_cap_if_null(ops, cred_free);
+	set_to_cap_if_null(ops, cred_prepare);
+	set_to_cap_if_null(ops, cred_commit);
+	set_to_cap_if_null(ops, kernel_act_as);
+	set_to_cap_if_null(ops, kernel_create_files_as);
 	set_to_cap_if_null(ops, task_setuid);
-	set_to_cap_if_null(ops, task_post_setuid);
+	set_to_cap_if_null(ops, task_fix_setuid);
 	set_to_cap_if_null(ops, task_setgid);
 	set_to_cap_if_null(ops, task_setpgid);
 	set_to_cap_if_null(ops, task_getpgid);
@@ -910,7 +919,6 @@
 	set_to_cap_if_null(ops, task_wait);
 	set_to_cap_if_null(ops, task_kill);
 	set_to_cap_if_null(ops, task_prctl);
-	set_to_cap_if_null(ops, task_reparent_to_init);
 	set_to_cap_if_null(ops, task_to_inode);
 	set_to_cap_if_null(ops, ipc_permission);
 	set_to_cap_if_null(ops, ipc_getsecid);
diff --git a/security/commoncap.c b/security/commoncap.c
index 3976613..7971354 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -8,6 +8,7 @@
  */
 
 #include <linux/capability.h>
+#include <linux/audit.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -29,7 +30,7 @@
 
 int cap_netlink_send(struct sock *sk, struct sk_buff *skb)
 {
-	NETLINK_CB(skb).eff_cap = current->cap_effective;
+	NETLINK_CB(skb).eff_cap = current_cap();
 	return 0;
 }
 
@@ -39,23 +40,41 @@
 		return -EPERM;
 	return 0;
 }
-
 EXPORT_SYMBOL(cap_netlink_recv);
 
-/*
+/**
+ * cap_capable - Determine whether a task has a particular effective capability
+ * @tsk: The task to query
+ * @cap: The capability to check for
+ * @audit: Whether to write an audit message or not
+ *
+ * Determine whether the nominated task has the specified capability amongst
+ * its effective set, returning 0 if it does, -ve if it does not.
+ *
  * NOTE WELL: cap_capable() cannot be used like the kernel's capable()
- * function.  That is, it has the reverse semantics: cap_capable()
- * returns 0 when a task has a capability, but the kernel's capable()
- * returns 1 for this case.
+ * function.  That is, it has the reverse semantics: cap_capable() returns 0
+ * when a task has a capability, but the kernel's capable() returns 1 for this
+ * case.
  */
-int cap_capable (struct task_struct *tsk, int cap)
+int cap_capable(struct task_struct *tsk, int cap, int audit)
 {
+	__u32 cap_raised;
+
 	/* Derived from include/linux/sched.h:capable. */
-	if (cap_raised(tsk->cap_effective, cap))
-		return 0;
-	return -EPERM;
+	rcu_read_lock();
+	cap_raised = cap_raised(__task_cred(tsk)->cap_effective, cap);
+	rcu_read_unlock();
+	return cap_raised ? 0 : -EPERM;
 }
 
+/**
+ * cap_settime - Determine whether the current process may set the system clock
+ * @ts: The time to set
+ * @tz: The timezone to set
+ *
+ * Determine whether the current process may set the system clock and timezone
+ * information, returning 0 if permission granted, -ve if denied.
+ */
 int cap_settime(struct timespec *ts, struct timezone *tz)
 {
 	if (!capable(CAP_SYS_TIME))
@@ -63,121 +82,157 @@
 	return 0;
 }
 
+/**
+ * cap_ptrace_may_access - Determine whether the current process may access
+ *			   another
+ * @child: The process to be accessed
+ * @mode: The mode of attachment.
+ *
+ * Determine whether a process may access another, returning 0 if permission
+ * granted, -ve if denied.
+ */
 int cap_ptrace_may_access(struct task_struct *child, unsigned int mode)
 {
-	/* Derived from arch/i386/kernel/ptrace.c:sys_ptrace. */
-	if (cap_issubset(child->cap_permitted, current->cap_permitted))
-		return 0;
-	if (capable(CAP_SYS_PTRACE))
-		return 0;
-	return -EPERM;
+	int ret = 0;
+
+	rcu_read_lock();
+	if (!cap_issubset(__task_cred(child)->cap_permitted,
+			  current_cred()->cap_permitted) &&
+	    !capable(CAP_SYS_PTRACE))
+		ret = -EPERM;
+	rcu_read_unlock();
+	return ret;
 }
 
+/**
+ * cap_ptrace_traceme - Determine whether another process may trace the current
+ * @parent: The task proposed to be the tracer
+ *
+ * Determine whether the nominated task is permitted to trace the current
+ * process, returning 0 if permission is granted, -ve if denied.
+ */
 int cap_ptrace_traceme(struct task_struct *parent)
 {
-	/* Derived from arch/i386/kernel/ptrace.c:sys_ptrace. */
-	if (cap_issubset(current->cap_permitted, parent->cap_permitted))
-		return 0;
-	if (has_capability(parent, CAP_SYS_PTRACE))
-		return 0;
-	return -EPERM;
+	int ret = 0;
+
+	rcu_read_lock();
+	if (!cap_issubset(current_cred()->cap_permitted,
+			  __task_cred(parent)->cap_permitted) &&
+	    !has_capability(parent, CAP_SYS_PTRACE))
+		ret = -EPERM;
+	rcu_read_unlock();
+	return ret;
 }
 
-int cap_capget (struct task_struct *target, kernel_cap_t *effective,
-		kernel_cap_t *inheritable, kernel_cap_t *permitted)
+/**
+ * cap_capget - Retrieve a task's capability sets
+ * @target: The task from which to retrieve the capability sets
+ * @effective: The place to record the effective set
+ * @inheritable: The place to record the inheritable set
+ * @permitted: The place to record the permitted set
+ *
+ * This function retrieves the capabilities of the nominated task and returns
+ * them to the caller.
+ */
+int cap_capget(struct task_struct *target, kernel_cap_t *effective,
+	       kernel_cap_t *inheritable, kernel_cap_t *permitted)
 {
+	const struct cred *cred;
+
 	/* Derived from kernel/capability.c:sys_capget. */
-	*effective = target->cap_effective;
-	*inheritable = target->cap_inheritable;
-	*permitted = target->cap_permitted;
+	rcu_read_lock();
+	cred = __task_cred(target);
+	*effective   = cred->cap_effective;
+	*inheritable = cred->cap_inheritable;
+	*permitted   = cred->cap_permitted;
+	rcu_read_unlock();
 	return 0;
 }
 
-#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
-
-static inline int cap_block_setpcap(struct task_struct *target)
-{
-	/*
-	 * No support for remote process capability manipulation with
-	 * filesystem capability support.
-	 */
-	return (target != current);
-}
-
+/*
+ * Determine whether the inheritable capabilities are limited to the old
+ * permitted set.  Returns 1 if they are limited, 0 if they are not.
+ */
 static inline int cap_inh_is_capped(void)
 {
-	/*
-	 * Return 1 if changes to the inheritable set are limited
-	 * to the old permitted set. That is, if the current task
-	 * does *not* possess the CAP_SETPCAP capability.
+#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
+
+	/* they are so limited unless the current task has the CAP_SETPCAP
+	 * capability
 	 */
-	return (cap_capable(current, CAP_SETPCAP) != 0);
+	if (cap_capable(current, CAP_SETPCAP, SECURITY_CAP_AUDIT) == 0)
+		return 0;
+#endif
+	return 1;
 }
 
-static inline int cap_limit_ptraced_target(void) { return 1; }
-
-#else /* ie., ndef CONFIG_SECURITY_FILE_CAPABILITIES */
-
-static inline int cap_block_setpcap(struct task_struct *t) { return 0; }
-static inline int cap_inh_is_capped(void) { return 1; }
-static inline int cap_limit_ptraced_target(void)
+/**
+ * cap_capset - Validate and apply proposed changes to current's capabilities
+ * @new: The proposed new credentials; alterations should be made here
+ * @old: The current task's current credentials
+ * @effective: A pointer to the proposed new effective capabilities set
+ * @inheritable: A pointer to the proposed new inheritable capabilities set
+ * @permitted: A pointer to the proposed new permitted capabilities set
+ *
+ * This function validates and applies a proposed mass change to the current
+ * process's capability sets.  The changes are made to the proposed new
+ * credentials, and assuming no error, will be committed by the caller of LSM.
+ */
+int cap_capset(struct cred *new,
+	       const struct cred *old,
+	       const kernel_cap_t *effective,
+	       const kernel_cap_t *inheritable,
+	       const kernel_cap_t *permitted)
 {
-	return !capable(CAP_SETPCAP);
-}
-
-#endif /* def CONFIG_SECURITY_FILE_CAPABILITIES */
-
-int cap_capset_check (struct task_struct *target, kernel_cap_t *effective,
-		      kernel_cap_t *inheritable, kernel_cap_t *permitted)
-{
-	if (cap_block_setpcap(target)) {
-		return -EPERM;
-	}
-	if (cap_inh_is_capped()
-	    && !cap_issubset(*inheritable,
-			     cap_combine(target->cap_inheritable,
-					 current->cap_permitted))) {
+	if (cap_inh_is_capped() &&
+	    !cap_issubset(*inheritable,
+			  cap_combine(old->cap_inheritable,
+				      old->cap_permitted)))
 		/* incapable of using this inheritable set */
 		return -EPERM;
-	}
+
 	if (!cap_issubset(*inheritable,
-			   cap_combine(target->cap_inheritable,
-				       current->cap_bset))) {
+			  cap_combine(old->cap_inheritable,
+				      old->cap_bset)))
 		/* no new pI capabilities outside bounding set */
 		return -EPERM;
-	}
 
 	/* verify restrictions on target's new Permitted set */
-	if (!cap_issubset (*permitted,
-			   cap_combine (target->cap_permitted,
-					current->cap_permitted))) {
+	if (!cap_issubset(*permitted, old->cap_permitted))
 		return -EPERM;
-	}
 
 	/* verify the _new_Effective_ is a subset of the _new_Permitted_ */
-	if (!cap_issubset (*effective, *permitted)) {
+	if (!cap_issubset(*effective, *permitted))
 		return -EPERM;
-	}
 
+	new->cap_effective   = *effective;
+	new->cap_inheritable = *inheritable;
+	new->cap_permitted   = *permitted;
 	return 0;
 }
 
-void cap_capset_set (struct task_struct *target, kernel_cap_t *effective,
-		     kernel_cap_t *inheritable, kernel_cap_t *permitted)
-{
-	target->cap_effective = *effective;
-	target->cap_inheritable = *inheritable;
-	target->cap_permitted = *permitted;
-}
-
+/*
+ * Clear proposed capability sets for execve().
+ */
 static inline void bprm_clear_caps(struct linux_binprm *bprm)
 {
-	cap_clear(bprm->cap_post_exec_permitted);
+	cap_clear(bprm->cred->cap_permitted);
 	bprm->cap_effective = false;
 }
 
 #ifdef CONFIG_SECURITY_FILE_CAPABILITIES
 
+/**
+ * cap_inode_need_killpriv - Determine if inode change affects privileges
+ * @dentry: The inode/dentry in being changed with change marked ATTR_KILL_PRIV
+ *
+ * Determine if an inode having a change applied that's marked ATTR_KILL_PRIV
+ * affects the security markings on that inode, and if it is, should
+ * inode_killpriv() be invoked or the change rejected?
+ *
+ * Returns 0 if granted; +ve if granted, but inode_killpriv() is required; and
+ * -ve to deny the change.
+ */
 int cap_inode_need_killpriv(struct dentry *dentry)
 {
 	struct inode *inode = dentry->d_inode;
@@ -192,6 +247,14 @@
 	return 1;
 }
 
+/**
+ * cap_inode_killpriv - Erase the security markings on an inode
+ * @dentry: The inode/dentry to alter
+ *
+ * Erase the privilege-enhancing security markings on an inode.
+ *
+ * Returns 0 if successful, -ve on error.
+ */
 int cap_inode_killpriv(struct dentry *dentry)
 {
 	struct inode *inode = dentry->d_inode;
@@ -202,19 +265,75 @@
 	return inode->i_op->removexattr(dentry, XATTR_NAME_CAPS);
 }
 
-static inline int cap_from_disk(struct vfs_cap_data *caps,
-				struct linux_binprm *bprm, unsigned size)
+/*
+ * Calculate the new process capability sets from the capability sets attached
+ * to a file.
+ */
+static inline int bprm_caps_from_vfs_caps(struct cpu_vfs_cap_data *caps,
+					  struct linux_binprm *bprm,
+					  bool *effective)
 {
+	struct cred *new = bprm->cred;
+	unsigned i;
+	int ret = 0;
+
+	if (caps->magic_etc & VFS_CAP_FLAGS_EFFECTIVE)
+		*effective = true;
+
+	CAP_FOR_EACH_U32(i) {
+		__u32 permitted = caps->permitted.cap[i];
+		__u32 inheritable = caps->inheritable.cap[i];
+
+		/*
+		 * pP' = (X & fP) | (pI & fI)
+		 */
+		new->cap_permitted.cap[i] =
+			(new->cap_bset.cap[i] & permitted) |
+			(new->cap_inheritable.cap[i] & inheritable);
+
+		if (permitted & ~new->cap_permitted.cap[i])
+			/* insufficient to execute correctly */
+			ret = -EPERM;
+	}
+
+	/*
+	 * For legacy apps, with no internal support for recognizing they
+	 * do not have enough capabilities, we return an error if they are
+	 * missing some "forced" (aka file-permitted) capabilities.
+	 */
+	return *effective ? ret : 0;
+}
+
+/*
+ * Extract the on-exec-apply capability sets for an executable file.
+ */
+int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps)
+{
+	struct inode *inode = dentry->d_inode;
 	__u32 magic_etc;
 	unsigned tocopy, i;
-	int ret;
+	int size;
+	struct vfs_cap_data caps;
+
+	memset(cpu_caps, 0, sizeof(struct cpu_vfs_cap_data));
+
+	if (!inode || !inode->i_op || !inode->i_op->getxattr)
+		return -ENODATA;
+
+	size = inode->i_op->getxattr((struct dentry *)dentry, XATTR_NAME_CAPS, &caps,
+				   XATTR_CAPS_SZ);
+	if (size == -ENODATA || size == -EOPNOTSUPP)
+		/* no data, that's ok */
+		return -ENODATA;
+	if (size < 0)
+		return size;
 
 	if (size < sizeof(magic_etc))
 		return -EINVAL;
 
-	magic_etc = le32_to_cpu(caps->magic_etc);
+	cpu_caps->magic_etc = magic_etc = le32_to_cpu(caps.magic_etc);
 
-	switch ((magic_etc & VFS_CAP_REVISION_MASK)) {
+	switch (magic_etc & VFS_CAP_REVISION_MASK) {
 	case VFS_CAP_REVISION_1:
 		if (size != XATTR_CAPS_SZ_1)
 			return -EINVAL;
@@ -229,77 +348,48 @@
 		return -EINVAL;
 	}
 
-	if (magic_etc & VFS_CAP_FLAGS_EFFECTIVE) {
-		bprm->cap_effective = true;
-	} else {
-		bprm->cap_effective = false;
-	}
-
-	ret = 0;
-
 	CAP_FOR_EACH_U32(i) {
-		__u32 value_cpu;
-
-		if (i >= tocopy) {
-			/*
-			 * Legacy capability sets have no upper bits
-			 */
-			bprm->cap_post_exec_permitted.cap[i] = 0;
-			continue;
-		}
-		/*
-		 * pP' = (X & fP) | (pI & fI)
-		 */
-		value_cpu = le32_to_cpu(caps->data[i].permitted);
-		bprm->cap_post_exec_permitted.cap[i] =
-			(current->cap_bset.cap[i] & value_cpu) |
-			(current->cap_inheritable.cap[i] &
-				le32_to_cpu(caps->data[i].inheritable));
-		if (value_cpu & ~bprm->cap_post_exec_permitted.cap[i]) {
-			/*
-			 * insufficient to execute correctly
-			 */
-			ret = -EPERM;
-		}
+		if (i >= tocopy)
+			break;
+		cpu_caps->permitted.cap[i] = le32_to_cpu(caps.data[i].permitted);
+		cpu_caps->inheritable.cap[i] = le32_to_cpu(caps.data[i].inheritable);
 	}
 
-	/*
-	 * For legacy apps, with no internal support for recognizing they
-	 * do not have enough capabilities, we return an error if they are
-	 * missing some "forced" (aka file-permitted) capabilities.
-	 */
-	return bprm->cap_effective ? ret : 0;
+	return 0;
 }
 
-/* Locate any VFS capabilities: */
-static int get_file_caps(struct linux_binprm *bprm)
+/*
+ * Attempt to get the on-exec apply capability sets for an executable file from
+ * its xattrs and, if present, apply them to the proposed credentials being
+ * constructed by execve().
+ */
+static int get_file_caps(struct linux_binprm *bprm, bool *effective)
 {
 	struct dentry *dentry;
 	int rc = 0;
-	struct vfs_cap_data vcaps;
-	struct inode *inode;
+	struct cpu_vfs_cap_data vcaps;
 
 	bprm_clear_caps(bprm);
 
+	if (!file_caps_enabled)
+		return 0;
+
 	if (bprm->file->f_vfsmnt->mnt_flags & MNT_NOSUID)
 		return 0;
 
 	dentry = dget(bprm->file->f_dentry);
-	inode = dentry->d_inode;
-	if (!inode->i_op || !inode->i_op->getxattr)
-		goto out;
 
-	rc = inode->i_op->getxattr(dentry, XATTR_NAME_CAPS, &vcaps,
-				   XATTR_CAPS_SZ);
-	if (rc == -ENODATA || rc == -EOPNOTSUPP) {
-		/* no data, that's ok */
-		rc = 0;
+	rc = get_vfs_caps_from_disk(dentry, &vcaps);
+	if (rc < 0) {
+		if (rc == -EINVAL)
+			printk(KERN_NOTICE "%s: get_vfs_caps_from_disk returned %d for %s\n",
+				__func__, rc, bprm->filename);
+		else if (rc == -ENODATA)
+			rc = 0;
 		goto out;
 	}
-	if (rc < 0)
-		goto out;
 
-	rc = cap_from_disk(&vcaps, bprm, rc);
+	rc = bprm_caps_from_vfs_caps(&vcaps, bprm, effective);
 	if (rc == -EINVAL)
 		printk(KERN_NOTICE "%s: cap_from_disk returned %d for %s\n",
 		       __func__, rc, bprm->filename);
@@ -323,18 +413,57 @@
 	return 0;
 }
 
-static inline int get_file_caps(struct linux_binprm *bprm)
+int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps)
+{
+	memset(cpu_caps, 0, sizeof(struct cpu_vfs_cap_data));
+ 	return -ENODATA;
+}
+
+static inline int get_file_caps(struct linux_binprm *bprm, bool *effective)
 {
 	bprm_clear_caps(bprm);
 	return 0;
 }
 #endif
 
-int cap_bprm_set_security (struct linux_binprm *bprm)
+/*
+ * Determine whether a exec'ing process's new permitted capabilities should be
+ * limited to just what it already has.
+ *
+ * This prevents processes that are being ptraced from gaining access to
+ * CAP_SETPCAP, unless the process they're tracing already has it, and the
+ * binary they're executing has filecaps that elevate it.
+ *
+ *  Returns 1 if they should be limited, 0 if they are not.
+ */
+static inline int cap_limit_ptraced_target(void)
 {
+#ifndef CONFIG_SECURITY_FILE_CAPABILITIES
+	if (capable(CAP_SETPCAP))
+		return 0;
+#endif
+	return 1;
+}
+
+/**
+ * cap_bprm_set_creds - Set up the proposed credentials for execve().
+ * @bprm: The execution parameters, including the proposed creds
+ *
+ * Set up the proposed credentials for a new execution context being
+ * constructed by execve().  The proposed creds in @bprm->cred is altered,
+ * which won't take effect immediately.  Returns 0 if successful, -ve on error.
+ */
+int cap_bprm_set_creds(struct linux_binprm *bprm)
+{
+	const struct cred *old = current_cred();
+	struct cred *new = bprm->cred;
+	bool effective;
 	int ret;
 
-	ret = get_file_caps(bprm);
+	effective = false;
+	ret = get_file_caps(bprm, &effective);
+	if (ret < 0)
+		return ret;
 
 	if (!issecure(SECURE_NOROOT)) {
 		/*
@@ -342,75 +471,113 @@
 		 * executables under compatibility mode, we override the
 		 * capability sets for the file.
 		 *
-		 * If only the real uid is 0, we do not set the effective
-		 * bit.
+		 * If only the real uid is 0, we do not set the effective bit.
 		 */
-		if (bprm->e_uid == 0 || current->uid == 0) {
+		if (new->euid == 0 || new->uid == 0) {
 			/* pP' = (cap_bset & ~0) | (pI & ~0) */
-			bprm->cap_post_exec_permitted = cap_combine(
-				current->cap_bset, current->cap_inheritable
-				);
-			bprm->cap_effective = (bprm->e_uid == 0);
-			ret = 0;
+			new->cap_permitted = cap_combine(old->cap_bset,
+							 old->cap_inheritable);
 		}
+		if (new->euid == 0)
+			effective = true;
 	}
 
-	return ret;
-}
-
-void cap_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
-{
-	if (bprm->e_uid != current->uid || bprm->e_gid != current->gid ||
-	    !cap_issubset(bprm->cap_post_exec_permitted,
-			  current->cap_permitted)) {
-		set_dumpable(current->mm, suid_dumpable);
-		current->pdeath_signal = 0;
-
-		if (unsafe & ~LSM_UNSAFE_PTRACE_CAP) {
-			if (!capable(CAP_SETUID)) {
-				bprm->e_uid = current->uid;
-				bprm->e_gid = current->gid;
-			}
-			if (cap_limit_ptraced_target()) {
-				bprm->cap_post_exec_permitted = cap_intersect(
-					bprm->cap_post_exec_permitted,
-					current->cap_permitted);
-			}
+	/* Don't let someone trace a set[ug]id/setpcap binary with the revised
+	 * credentials unless they have the appropriate permit
+	 */
+	if ((new->euid != old->uid ||
+	     new->egid != old->gid ||
+	     !cap_issubset(new->cap_permitted, old->cap_permitted)) &&
+	    bprm->unsafe & ~LSM_UNSAFE_PTRACE_CAP) {
+		/* downgrade; they get no more than they had, and maybe less */
+		if (!capable(CAP_SETUID)) {
+			new->euid = new->uid;
+			new->egid = new->gid;
 		}
+		if (cap_limit_ptraced_target())
+			new->cap_permitted = cap_intersect(new->cap_permitted,
+							   old->cap_permitted);
 	}
 
-	current->suid = current->euid = current->fsuid = bprm->e_uid;
-	current->sgid = current->egid = current->fsgid = bprm->e_gid;
+	new->suid = new->fsuid = new->euid;
+	new->sgid = new->fsgid = new->egid;
 
-	/* For init, we want to retain the capabilities set
-	 * in the init_task struct. Thus we skip the usual
-	 * capability rules */
+	/* For init, we want to retain the capabilities set in the initial
+	 * task.  Thus we skip the usual capability rules
+	 */
 	if (!is_global_init(current)) {
-		current->cap_permitted = bprm->cap_post_exec_permitted;
-		if (bprm->cap_effective)
-			current->cap_effective = bprm->cap_post_exec_permitted;
+		if (effective)
+			new->cap_effective = new->cap_permitted;
 		else
-			cap_clear(current->cap_effective);
+			cap_clear(new->cap_effective);
+	}
+	bprm->cap_effective = effective;
+
+	/*
+	 * Audit candidate if current->cap_effective is set
+	 *
+	 * We do not bother to audit if 3 things are true:
+	 *   1) cap_effective has all caps
+	 *   2) we are root
+	 *   3) root is supposed to have all caps (SECURE_NOROOT)
+	 * Since this is just a normal root execing a process.
+	 *
+	 * Number 1 above might fail if you don't have a full bset, but I think
+	 * that is interesting information to audit.
+	 */
+	if (!cap_isclear(new->cap_effective)) {
+		if (!cap_issubset(CAP_FULL_SET, new->cap_effective) ||
+		    new->euid != 0 || new->uid != 0 ||
+		    issecure(SECURE_NOROOT)) {
+			ret = audit_log_bprm_fcaps(bprm, new, old);
+			if (ret < 0)
+				return ret;
+		}
 	}
 
-	/* AUD: Audit candidate if current->cap_effective is set */
-
-	current->securebits &= ~issecure_mask(SECURE_KEEP_CAPS);
+	new->securebits &= ~issecure_mask(SECURE_KEEP_CAPS);
+	return 0;
 }
 
-int cap_bprm_secureexec (struct linux_binprm *bprm)
+/**
+ * cap_bprm_secureexec - Determine whether a secure execution is required
+ * @bprm: The execution parameters
+ *
+ * Determine whether a secure execution is required, return 1 if it is, and 0
+ * if it is not.
+ *
+ * The credentials have been committed by this point, and so are no longer
+ * available through @bprm->cred.
+ */
+int cap_bprm_secureexec(struct linux_binprm *bprm)
 {
-	if (current->uid != 0) {
+	const struct cred *cred = current_cred();
+
+	if (cred->uid != 0) {
 		if (bprm->cap_effective)
 			return 1;
-		if (!cap_isclear(bprm->cap_post_exec_permitted))
+		if (!cap_isclear(cred->cap_permitted))
 			return 1;
 	}
 
-	return (current->euid != current->uid ||
-		current->egid != current->gid);
+	return (cred->euid != cred->uid ||
+		cred->egid != cred->gid);
 }
 
+/**
+ * cap_inode_setxattr - Determine whether an xattr may be altered
+ * @dentry: The inode/dentry being altered
+ * @name: The name of the xattr to be changed
+ * @value: The value that the xattr will be changed to
+ * @size: The size of value
+ * @flags: The replacement flag
+ *
+ * Determine whether an xattr may be altered or set on an inode, returning 0 if
+ * permission is granted, -ve if denied.
+ *
+ * This is used to make sure security xattrs don't get updated or set by those
+ * who aren't privileged to do so.
+ */
 int cap_inode_setxattr(struct dentry *dentry, const char *name,
 		       const void *value, size_t size, int flags)
 {
@@ -418,28 +585,42 @@
 		if (!capable(CAP_SETFCAP))
 			return -EPERM;
 		return 0;
-	} else if (!strncmp(name, XATTR_SECURITY_PREFIX,
+	}
+
+	if (!strncmp(name, XATTR_SECURITY_PREFIX,
 		     sizeof(XATTR_SECURITY_PREFIX) - 1)  &&
 	    !capable(CAP_SYS_ADMIN))
 		return -EPERM;
 	return 0;
 }
 
+/**
+ * cap_inode_removexattr - Determine whether an xattr may be removed
+ * @dentry: The inode/dentry being altered
+ * @name: The name of the xattr to be changed
+ *
+ * Determine whether an xattr may be removed from an inode, returning 0 if
+ * permission is granted, -ve if denied.
+ *
+ * This is used to make sure security xattrs don't get removed by those who
+ * aren't privileged to remove them.
+ */
 int cap_inode_removexattr(struct dentry *dentry, const char *name)
 {
 	if (!strcmp(name, XATTR_NAME_CAPS)) {
 		if (!capable(CAP_SETFCAP))
 			return -EPERM;
 		return 0;
-	} else if (!strncmp(name, XATTR_SECURITY_PREFIX,
+	}
+
+	if (!strncmp(name, XATTR_SECURITY_PREFIX,
 		     sizeof(XATTR_SECURITY_PREFIX) - 1)  &&
 	    !capable(CAP_SYS_ADMIN))
 		return -EPERM;
 	return 0;
 }
 
-/* moved from kernel/sys.c. */
-/* 
+/*
  * cap_emulate_setxuid() fixes the effective / permitted capabilities of
  * a process after a call to setuid, setreuid, or setresuid.
  *
@@ -453,10 +634,10 @@
  *  3) When set*uiding _from_ euid != 0 _to_ euid == 0, the effective
  *  capabilities are set to the permitted capabilities.
  *
- *  fsuid is handled elsewhere. fsuid == 0 and {r,e,s}uid!= 0 should 
+ *  fsuid is handled elsewhere. fsuid == 0 and {r,e,s}uid!= 0 should
  *  never happen.
  *
- *  -astor 
+ *  -astor
  *
  * cevans - New behaviour, Oct '99
  * A process may, via prctl(), elect to keep its capabilities when it
@@ -468,61 +649,60 @@
  * files..
  * Thanks to Olaf Kirch and Peter Benie for spotting this.
  */
-static inline void cap_emulate_setxuid (int old_ruid, int old_euid,
-					int old_suid)
+static inline void cap_emulate_setxuid(struct cred *new, const struct cred *old)
 {
-	if ((old_ruid == 0 || old_euid == 0 || old_suid == 0) &&
-	    (current->uid != 0 && current->euid != 0 && current->suid != 0) &&
+	if ((old->uid == 0 || old->euid == 0 || old->suid == 0) &&
+	    (new->uid != 0 && new->euid != 0 && new->suid != 0) &&
 	    !issecure(SECURE_KEEP_CAPS)) {
-		cap_clear (current->cap_permitted);
-		cap_clear (current->cap_effective);
+		cap_clear(new->cap_permitted);
+		cap_clear(new->cap_effective);
 	}
-	if (old_euid == 0 && current->euid != 0) {
-		cap_clear (current->cap_effective);
-	}
-	if (old_euid != 0 && current->euid == 0) {
-		current->cap_effective = current->cap_permitted;
-	}
+	if (old->euid == 0 && new->euid != 0)
+		cap_clear(new->cap_effective);
+	if (old->euid != 0 && new->euid == 0)
+		new->cap_effective = new->cap_permitted;
 }
 
-int cap_task_post_setuid (uid_t old_ruid, uid_t old_euid, uid_t old_suid,
-			  int flags)
+/**
+ * cap_task_fix_setuid - Fix up the results of setuid() call
+ * @new: The proposed credentials
+ * @old: The current task's current credentials
+ * @flags: Indications of what has changed
+ *
+ * Fix up the results of setuid() call before the credential changes are
+ * actually applied, returning 0 to grant the changes, -ve to deny them.
+ */
+int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags)
 {
 	switch (flags) {
 	case LSM_SETID_RE:
 	case LSM_SETID_ID:
 	case LSM_SETID_RES:
-		/* Copied from kernel/sys.c:setreuid/setuid/setresuid. */
-		if (!issecure (SECURE_NO_SETUID_FIXUP)) {
-			cap_emulate_setxuid (old_ruid, old_euid, old_suid);
+		/* juggle the capabilities to follow [RES]UID changes unless
+		 * otherwise suppressed */
+		if (!issecure(SECURE_NO_SETUID_FIXUP))
+			cap_emulate_setxuid(new, old);
+		break;
+
+	case LSM_SETID_FS:
+		/* juggle the capabilties to follow FSUID changes, unless
+		 * otherwise suppressed
+		 *
+		 * FIXME - is fsuser used for all CAP_FS_MASK capabilities?
+		 *          if not, we might be a bit too harsh here.
+		 */
+		if (!issecure(SECURE_NO_SETUID_FIXUP)) {
+			if (old->fsuid == 0 && new->fsuid != 0)
+				new->cap_effective =
+					cap_drop_fs_set(new->cap_effective);
+
+			if (old->fsuid != 0 && new->fsuid == 0)
+				new->cap_effective =
+					cap_raise_fs_set(new->cap_effective,
+							 new->cap_permitted);
 		}
 		break;
-	case LSM_SETID_FS:
-		{
-			uid_t old_fsuid = old_ruid;
 
-			/* Copied from kernel/sys.c:setfsuid. */
-
-			/*
-			 * FIXME - is fsuser used for all CAP_FS_MASK capabilities?
-			 *          if not, we might be a bit too harsh here.
-			 */
-
-			if (!issecure (SECURE_NO_SETUID_FIXUP)) {
-				if (old_fsuid == 0 && current->fsuid != 0) {
-					current->cap_effective =
-						cap_drop_fs_set(
-						    current->cap_effective);
-				}
-				if (old_fsuid != 0 && current->fsuid == 0) {
-					current->cap_effective =
-						cap_raise_fs_set(
-						    current->cap_effective,
-						    current->cap_permitted);
-				}
-			}
-			break;
-		}
 	default:
 		return -EINVAL;
 	}
@@ -543,42 +723,71 @@
  */
 static int cap_safe_nice(struct task_struct *p)
 {
-	if (!cap_issubset(p->cap_permitted, current->cap_permitted) &&
-	    !capable(CAP_SYS_NICE))
+	int is_subset;
+
+	rcu_read_lock();
+	is_subset = cap_issubset(__task_cred(p)->cap_permitted,
+				 current_cred()->cap_permitted);
+	rcu_read_unlock();
+
+	if (!is_subset && !capable(CAP_SYS_NICE))
 		return -EPERM;
 	return 0;
 }
 
-int cap_task_setscheduler (struct task_struct *p, int policy,
+/**
+ * cap_task_setscheduler - Detemine if scheduler policy change is permitted
+ * @p: The task to affect
+ * @policy: The policy to effect
+ * @lp: The parameters to the scheduling policy
+ *
+ * Detemine if the requested scheduler policy change is permitted for the
+ * specified task, returning 0 if permission is granted, -ve if denied.
+ */
+int cap_task_setscheduler(struct task_struct *p, int policy,
 			   struct sched_param *lp)
 {
 	return cap_safe_nice(p);
 }
 
-int cap_task_setioprio (struct task_struct *p, int ioprio)
+/**
+ * cap_task_ioprio - Detemine if I/O priority change is permitted
+ * @p: The task to affect
+ * @ioprio: The I/O priority to set
+ *
+ * Detemine if the requested I/O priority change is permitted for the specified
+ * task, returning 0 if permission is granted, -ve if denied.
+ */
+int cap_task_setioprio(struct task_struct *p, int ioprio)
 {
 	return cap_safe_nice(p);
 }
 
-int cap_task_setnice (struct task_struct *p, int nice)
+/**
+ * cap_task_ioprio - Detemine if task priority change is permitted
+ * @p: The task to affect
+ * @nice: The nice value to set
+ *
+ * Detemine if the requested task priority change is permitted for the
+ * specified task, returning 0 if permission is granted, -ve if denied.
+ */
+int cap_task_setnice(struct task_struct *p, int nice)
 {
 	return cap_safe_nice(p);
 }
 
 /*
- * called from kernel/sys.c for prctl(PR_CABSET_DROP)
- * done without task_capability_lock() because it introduces
- * no new races - i.e. only another task doing capget() on
- * this task could get inconsistent info.  There can be no
- * racing writer bc a task can only change its own caps.
+ * Implement PR_CAPBSET_DROP.  Attempt to remove the specified capability from
+ * the current task's bounding set.  Returns 0 on success, -ve on error.
  */
-static long cap_prctl_drop(unsigned long cap)
+static long cap_prctl_drop(struct cred *new, unsigned long cap)
 {
 	if (!capable(CAP_SETPCAP))
 		return -EPERM;
 	if (!cap_valid(cap))
 		return -EINVAL;
-	cap_lower(current->cap_bset, cap);
+
+	cap_lower(new->cap_bset, cap);
 	return 0;
 }
 
@@ -598,22 +807,42 @@
 }
 #endif
 
+/**
+ * cap_task_prctl - Implement process control functions for this security module
+ * @option: The process control function requested
+ * @arg2, @arg3, @arg4, @arg5: The argument data for this function
+ *
+ * Allow process control functions (sys_prctl()) to alter capabilities; may
+ * also deny access to other functions not otherwise implemented here.
+ *
+ * Returns 0 or +ve on success, -ENOSYS if this function is not implemented
+ * here, other -ve on error.  If -ENOSYS is returned, sys_prctl() and other LSM
+ * modules will consider performing the function.
+ */
 int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
-		   unsigned long arg4, unsigned long arg5, long *rc_p)
+		   unsigned long arg4, unsigned long arg5)
 {
+	struct cred *new;
 	long error = 0;
 
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+
 	switch (option) {
 	case PR_CAPBSET_READ:
+		error = -EINVAL;
 		if (!cap_valid(arg2))
-			error = -EINVAL;
-		else
-			error = !!cap_raised(current->cap_bset, arg2);
-		break;
+			goto error;
+		error = !!cap_raised(new->cap_bset, arg2);
+		goto no_change;
+
 #ifdef CONFIG_SECURITY_FILE_CAPABILITIES
 	case PR_CAPBSET_DROP:
-		error = cap_prctl_drop(arg2);
-		break;
+		error = cap_prctl_drop(new, arg2);
+		if (error < 0)
+			goto error;
+		goto changed;
 
 	/*
 	 * The next four prctl's remain to assist with transitioning a
@@ -635,12 +864,12 @@
 	 * capability-based-privilege environment.
 	 */
 	case PR_SET_SECUREBITS:
-		if ((((current->securebits & SECURE_ALL_LOCKS) >> 1)
-		     & (current->securebits ^ arg2))                  /*[1]*/
-		    || ((current->securebits & SECURE_ALL_LOCKS
-			 & ~arg2))                                    /*[2]*/
-		    || (arg2 & ~(SECURE_ALL_LOCKS | SECURE_ALL_BITS)) /*[3]*/
-		    || (cap_capable(current, CAP_SETPCAP) != 0)) {    /*[4]*/
+		error = -EPERM;
+		if ((((new->securebits & SECURE_ALL_LOCKS) >> 1)
+		     & (new->securebits ^ arg2))			/*[1]*/
+		    || ((new->securebits & SECURE_ALL_LOCKS & ~arg2))	/*[2]*/
+		    || (arg2 & ~(SECURE_ALL_LOCKS | SECURE_ALL_BITS))	/*[3]*/
+		    || (cap_capable(current, CAP_SETPCAP, SECURITY_CAP_AUDIT) != 0) /*[4]*/
 			/*
 			 * [1] no changing of bits that are locked
 			 * [2] no unlocking of locks
@@ -648,65 +877,80 @@
 			 * [4] doing anything requires privilege (go read about
 			 *     the "sendmail capabilities bug")
 			 */
-			error = -EPERM;  /* cannot change a locked bit */
-		} else {
-			current->securebits = arg2;
-		}
-		break;
+		    )
+			/* cannot change a locked bit */
+			goto error;
+		new->securebits = arg2;
+		goto changed;
+
 	case PR_GET_SECUREBITS:
-		error = current->securebits;
-		break;
+		error = new->securebits;
+		goto no_change;
 
 #endif /* def CONFIG_SECURITY_FILE_CAPABILITIES */
 
 	case PR_GET_KEEPCAPS:
 		if (issecure(SECURE_KEEP_CAPS))
 			error = 1;
-		break;
+		goto no_change;
+
 	case PR_SET_KEEPCAPS:
+		error = -EINVAL;
 		if (arg2 > 1) /* Note, we rely on arg2 being unsigned here */
-			error = -EINVAL;
-		else if (issecure(SECURE_KEEP_CAPS_LOCKED))
-			error = -EPERM;
-		else if (arg2)
-			current->securebits |= issecure_mask(SECURE_KEEP_CAPS);
+			goto error;
+		error = -EPERM;
+		if (issecure(SECURE_KEEP_CAPS_LOCKED))
+			goto error;
+		if (arg2)
+			new->securebits |= issecure_mask(SECURE_KEEP_CAPS);
 		else
-			current->securebits &=
-				~issecure_mask(SECURE_KEEP_CAPS);
-		break;
+			new->securebits &= ~issecure_mask(SECURE_KEEP_CAPS);
+		goto changed;
 
 	default:
 		/* No functionality available - continue with default */
-		return 0;
+		error = -ENOSYS;
+		goto error;
 	}
 
 	/* Functionality provided */
-	*rc_p = error;
-	return 1;
+changed:
+	return commit_creds(new);
+
+no_change:
+	error = 0;
+error:
+	abort_creds(new);
+	return error;
 }
 
-void cap_task_reparent_to_init (struct task_struct *p)
-{
-	cap_set_init_eff(p->cap_effective);
-	cap_clear(p->cap_inheritable);
-	cap_set_full(p->cap_permitted);
-	p->securebits = SECUREBITS_DEFAULT;
-	return;
-}
-
-int cap_syslog (int type)
+/**
+ * cap_syslog - Determine whether syslog function is permitted
+ * @type: Function requested
+ *
+ * Determine whether the current process is permitted to use a particular
+ * syslog function, returning 0 if permission is granted, -ve if not.
+ */
+int cap_syslog(int type)
 {
 	if ((type != 3 && type != 10) && !capable(CAP_SYS_ADMIN))
 		return -EPERM;
 	return 0;
 }
 
+/**
+ * cap_vm_enough_memory - Determine whether a new virtual mapping is permitted
+ * @mm: The VM space in which the new mapping is to be made
+ * @pages: The size of the mapping
+ *
+ * Determine whether the allocation of a new virtual mapping by the current
+ * task is permitted, returning 0 if permission is granted, -ve if not.
+ */
 int cap_vm_enough_memory(struct mm_struct *mm, long pages)
 {
 	int cap_sys_admin = 0;
 
-	if (cap_capable(current, CAP_SYS_ADMIN) == 0)
+	if (cap_capable(current, CAP_SYS_ADMIN, SECURITY_CAP_NOAUDIT) == 0)
 		cap_sys_admin = 1;
 	return __vm_enough_memory(mm, pages, cap_sys_admin);
 }
-
diff --git a/security/keys/internal.h b/security/keys/internal.h
index 239098f..81932ab 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -12,8 +12,8 @@
 #ifndef _INTERNAL_H
 #define _INTERNAL_H
 
+#include <linux/sched.h>
 #include <linux/key-type.h>
-#include <linux/key-ui.h>
 
 static inline __attribute__((format(printf, 1, 2)))
 void no_printk(const char *fmt, ...)
@@ -26,7 +26,7 @@
 #define kleave(FMT, ...) \
 	printk(KERN_DEBUG "<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
 #define kdebug(FMT, ...) \
-	printk(KERN_DEBUG "xxx" FMT"yyy\n", ##__VA_ARGS__)
+	printk(KERN_DEBUG "   "FMT"\n", ##__VA_ARGS__)
 #else
 #define kenter(FMT, ...) \
 	no_printk(KERN_DEBUG "==> %s("FMT")\n", __func__, ##__VA_ARGS__)
@@ -82,6 +82,9 @@
 extern wait_queue_head_t request_key_conswq;
 
 
+extern struct key_type *key_type_lookup(const char *type);
+extern void key_type_put(struct key_type *ktype);
+
 extern int __key_link(struct key *keyring, struct key *key);
 
 extern key_ref_t __keyring_search_one(key_ref_t keyring_ref,
@@ -95,7 +98,7 @@
 typedef int (*key_match_func_t)(const struct key *, const void *);
 
 extern key_ref_t keyring_search_aux(key_ref_t keyring_ref,
-				    struct task_struct *tsk,
+				    const struct cred *cred,
 				    struct key_type *type,
 				    const void *description,
 				    key_match_func_t match);
@@ -103,13 +106,13 @@
 extern key_ref_t search_process_keyrings(struct key_type *type,
 					 const void *description,
 					 key_match_func_t match,
-					 struct task_struct *tsk);
+					 const struct cred *cred);
 
 extern struct key *find_keyring_by_name(const char *name, bool skip_perm_check);
 
-extern int install_user_keyrings(struct task_struct *tsk);
-extern int install_thread_keyring(struct task_struct *tsk);
-extern int install_process_keyring(struct task_struct *tsk);
+extern int install_user_keyrings(void);
+extern int install_thread_keyring_to_cred(struct cred *);
+extern int install_process_keyring_to_cred(struct cred *);
 
 extern struct key *request_key_and_link(struct key_type *type,
 					const char *description,
@@ -119,12 +122,39 @@
 					struct key *dest_keyring,
 					unsigned long flags);
 
+extern key_ref_t lookup_user_key(key_serial_t id, int create, int partial,
+				 key_perm_t perm);
+
+extern long join_session_keyring(const char *name);
+
+/*
+ * check to see whether permission is granted to use a key in the desired way
+ */
+extern int key_task_permission(const key_ref_t key_ref,
+			       const struct cred *cred,
+			       key_perm_t perm);
+
+static inline int key_permission(const key_ref_t key_ref, key_perm_t perm)
+{
+	return key_task_permission(key_ref, current_cred(), perm);
+}
+
+/* required permissions */
+#define	KEY_VIEW	0x01	/* require permission to view attributes */
+#define	KEY_READ	0x02	/* require permission to read content */
+#define	KEY_WRITE	0x04	/* require permission to update / modify */
+#define	KEY_SEARCH	0x08	/* require permission to search (keyring) or find (key) */
+#define	KEY_LINK	0x10	/* require permission to link */
+#define	KEY_SETATTR	0x20	/* require permission to change attributes */
+#define	KEY_ALL		0x3f	/* all the above permissions */
+
 /*
  * request_key authorisation
  */
 struct request_key_auth {
 	struct key		*target_key;
-	struct task_struct	*context;
+	struct key		*dest_keyring;
+	const struct cred	*cred;
 	void			*callout_info;
 	size_t			callout_len;
 	pid_t			pid;
@@ -133,7 +163,8 @@
 extern struct key_type key_type_request_key_auth;
 extern struct key *request_key_auth_new(struct key *target,
 					const void *callout_info,
-					size_t callout_len);
+					size_t callout_len,
+					struct key *dest_keyring);
 
 extern struct key *key_get_instantiation_authkey(key_serial_t target_id);
 
diff --git a/security/keys/key.c b/security/keys/key.c
index 14948cf..f76c8a5 100644
--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -218,7 +218,7 @@
  *   instantiate the key or discard it before returning
  */
 struct key *key_alloc(struct key_type *type, const char *desc,
-		      uid_t uid, gid_t gid, struct task_struct *ctx,
+		      uid_t uid, gid_t gid, const struct cred *cred,
 		      key_perm_t perm, unsigned long flags)
 {
 	struct key_user *user = NULL;
@@ -294,7 +294,7 @@
 #endif
 
 	/* let the security module know about the key */
-	ret = security_key_alloc(key, ctx, flags);
+	ret = security_key_alloc(key, cred, flags);
 	if (ret < 0)
 		goto security_error;
 
@@ -391,7 +391,7 @@
 				      const void *data,
 				      size_t datalen,
 				      struct key *keyring,
-				      struct key *instkey)
+				      struct key *authkey)
 {
 	int ret, awaken;
 
@@ -421,8 +421,8 @@
 				ret = __key_link(keyring, key);
 
 			/* disable the authorisation key */
-			if (instkey)
-				key_revoke(instkey);
+			if (authkey)
+				key_revoke(authkey);
 		}
 	}
 
@@ -444,14 +444,14 @@
 			     const void *data,
 			     size_t datalen,
 			     struct key *keyring,
-			     struct key *instkey)
+			     struct key *authkey)
 {
 	int ret;
 
 	if (keyring)
 		down_write(&keyring->sem);
 
-	ret = __key_instantiate_and_link(key, data, datalen, keyring, instkey);
+	ret = __key_instantiate_and_link(key, data, datalen, keyring, authkey);
 
 	if (keyring)
 		up_write(&keyring->sem);
@@ -469,7 +469,7 @@
 int key_negate_and_link(struct key *key,
 			unsigned timeout,
 			struct key *keyring,
-			struct key *instkey)
+			struct key *authkey)
 {
 	struct timespec now;
 	int ret, awaken;
@@ -504,8 +504,8 @@
 			ret = __key_link(keyring, key);
 
 		/* disable the authorisation key */
-		if (instkey)
-			key_revoke(instkey);
+		if (authkey)
+			key_revoke(authkey);
 	}
 
 	mutex_unlock(&key_construction_mutex);
@@ -743,6 +743,7 @@
 			       key_perm_t perm,
 			       unsigned long flags)
 {
+	const struct cred *cred = current_cred();
 	struct key_type *ktype;
 	struct key *keyring, *key = NULL;
 	key_ref_t key_ref;
@@ -802,8 +803,8 @@
 	}
 
 	/* allocate a new key */
-	key = key_alloc(ktype, description, current->fsuid, current->fsgid,
-			current, perm, flags);
+	key = key_alloc(ktype, description, cred->fsuid, cred->fsgid, cred,
+			perm, flags);
 	if (IS_ERR(key)) {
 		key_ref = ERR_CAST(key);
 		goto error_3;
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index acc9c89..7c72baa 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -103,7 +103,7 @@
 	}
 
 	/* find the target keyring (which must be writable) */
-	keyring_ref = lookup_user_key(NULL, ringid, 1, 0, KEY_WRITE);
+	keyring_ref = lookup_user_key(ringid, 1, 0, KEY_WRITE);
 	if (IS_ERR(keyring_ref)) {
 		ret = PTR_ERR(keyring_ref);
 		goto error3;
@@ -185,7 +185,7 @@
 	/* get the destination keyring if specified */
 	dest_ref = NULL;
 	if (destringid) {
-		dest_ref = lookup_user_key(NULL, destringid, 1, 0, KEY_WRITE);
+		dest_ref = lookup_user_key(destringid, 1, 0, KEY_WRITE);
 		if (IS_ERR(dest_ref)) {
 			ret = PTR_ERR(dest_ref);
 			goto error3;
@@ -235,7 +235,7 @@
 	key_ref_t key_ref;
 	long ret;
 
-	key_ref = lookup_user_key(NULL, id, create, 0, KEY_SEARCH);
+	key_ref = lookup_user_key(id, create, 0, KEY_SEARCH);
 	if (IS_ERR(key_ref)) {
 		ret = PTR_ERR(key_ref);
 		goto error;
@@ -308,7 +308,7 @@
 	}
 
 	/* find the target key (which must be writable) */
-	key_ref = lookup_user_key(NULL, id, 0, 0, KEY_WRITE);
+	key_ref = lookup_user_key(id, 0, 0, KEY_WRITE);
 	if (IS_ERR(key_ref)) {
 		ret = PTR_ERR(key_ref);
 		goto error2;
@@ -336,7 +336,7 @@
 	key_ref_t key_ref;
 	long ret;
 
-	key_ref = lookup_user_key(NULL, id, 0, 0, KEY_WRITE);
+	key_ref = lookup_user_key(id, 0, 0, KEY_WRITE);
 	if (IS_ERR(key_ref)) {
 		ret = PTR_ERR(key_ref);
 		goto error;
@@ -362,7 +362,7 @@
 	key_ref_t keyring_ref;
 	long ret;
 
-	keyring_ref = lookup_user_key(NULL, ringid, 1, 0, KEY_WRITE);
+	keyring_ref = lookup_user_key(ringid, 1, 0, KEY_WRITE);
 	if (IS_ERR(keyring_ref)) {
 		ret = PTR_ERR(keyring_ref);
 		goto error;
@@ -388,13 +388,13 @@
 	key_ref_t keyring_ref, key_ref;
 	long ret;
 
-	keyring_ref = lookup_user_key(NULL, ringid, 1, 0, KEY_WRITE);
+	keyring_ref = lookup_user_key(ringid, 1, 0, KEY_WRITE);
 	if (IS_ERR(keyring_ref)) {
 		ret = PTR_ERR(keyring_ref);
 		goto error;
 	}
 
-	key_ref = lookup_user_key(NULL, id, 1, 0, KEY_LINK);
+	key_ref = lookup_user_key(id, 1, 0, KEY_LINK);
 	if (IS_ERR(key_ref)) {
 		ret = PTR_ERR(key_ref);
 		goto error2;
@@ -422,13 +422,13 @@
 	key_ref_t keyring_ref, key_ref;
 	long ret;
 
-	keyring_ref = lookup_user_key(NULL, ringid, 0, 0, KEY_WRITE);
+	keyring_ref = lookup_user_key(ringid, 0, 0, KEY_WRITE);
 	if (IS_ERR(keyring_ref)) {
 		ret = PTR_ERR(keyring_ref);
 		goto error;
 	}
 
-	key_ref = lookup_user_key(NULL, id, 0, 0, 0);
+	key_ref = lookup_user_key(id, 0, 0, 0);
 	if (IS_ERR(key_ref)) {
 		ret = PTR_ERR(key_ref);
 		goto error2;
@@ -464,7 +464,7 @@
 	char *tmpbuf;
 	long ret;
 
-	key_ref = lookup_user_key(NULL, keyid, 0, 1, KEY_VIEW);
+	key_ref = lookup_user_key(keyid, 0, 1, KEY_VIEW);
 	if (IS_ERR(key_ref)) {
 		/* viewing a key under construction is permitted if we have the
 		 * authorisation token handy */
@@ -472,7 +472,7 @@
 			instkey = key_get_instantiation_authkey(keyid);
 			if (!IS_ERR(instkey)) {
 				key_put(instkey);
-				key_ref = lookup_user_key(NULL, keyid,
+				key_ref = lookup_user_key(keyid,
 							  0, 1, 0);
 				if (!IS_ERR(key_ref))
 					goto okay;
@@ -557,7 +557,7 @@
 	}
 
 	/* get the keyring at which to begin the search */
-	keyring_ref = lookup_user_key(NULL, ringid, 0, 0, KEY_SEARCH);
+	keyring_ref = lookup_user_key(ringid, 0, 0, KEY_SEARCH);
 	if (IS_ERR(keyring_ref)) {
 		ret = PTR_ERR(keyring_ref);
 		goto error2;
@@ -566,7 +566,7 @@
 	/* get the destination keyring if specified */
 	dest_ref = NULL;
 	if (destringid) {
-		dest_ref = lookup_user_key(NULL, destringid, 1, 0, KEY_WRITE);
+		dest_ref = lookup_user_key(destringid, 1, 0, KEY_WRITE);
 		if (IS_ERR(dest_ref)) {
 			ret = PTR_ERR(dest_ref);
 			goto error3;
@@ -636,7 +636,7 @@
 	long ret;
 
 	/* find the key first */
-	key_ref = lookup_user_key(NULL, keyid, 0, 0, 0);
+	key_ref = lookup_user_key(keyid, 0, 0, 0);
 	if (IS_ERR(key_ref)) {
 		ret = -ENOKEY;
 		goto error;
@@ -699,7 +699,7 @@
 	if (uid == (uid_t) -1 && gid == (gid_t) -1)
 		goto error;
 
-	key_ref = lookup_user_key(NULL, id, 1, 1, KEY_SETATTR);
+	key_ref = lookup_user_key(id, 1, 1, KEY_SETATTR);
 	if (IS_ERR(key_ref)) {
 		ret = PTR_ERR(key_ref);
 		goto error;
@@ -804,7 +804,7 @@
 	if (perm & ~(KEY_POS_ALL | KEY_USR_ALL | KEY_GRP_ALL | KEY_OTH_ALL))
 		goto error;
 
-	key_ref = lookup_user_key(NULL, id, 1, 1, KEY_SETATTR);
+	key_ref = lookup_user_key(id, 1, 1, KEY_SETATTR);
 	if (IS_ERR(key_ref)) {
 		ret = PTR_ERR(key_ref);
 		goto error;
@@ -817,7 +817,7 @@
 	down_write(&key->sem);
 
 	/* if we're not the sysadmin, we can only change a key that we own */
-	if (capable(CAP_SYS_ADMIN) || key->uid == current->fsuid) {
+	if (capable(CAP_SYS_ADMIN) || key->uid == current_fsuid()) {
 		key->perm = perm;
 		ret = 0;
 	}
@@ -829,6 +829,60 @@
 
 } /* end keyctl_setperm_key() */
 
+/*
+ * get the destination keyring for instantiation
+ */
+static long get_instantiation_keyring(key_serial_t ringid,
+				      struct request_key_auth *rka,
+				      struct key **_dest_keyring)
+{
+	key_ref_t dkref;
+
+	/* just return a NULL pointer if we weren't asked to make a link */
+	if (ringid == 0) {
+		*_dest_keyring = NULL;
+		return 0;
+	}
+
+	/* if a specific keyring is nominated by ID, then use that */
+	if (ringid > 0) {
+		dkref = lookup_user_key(ringid, 1, 0, KEY_WRITE);
+		if (IS_ERR(dkref))
+			return PTR_ERR(dkref);
+		*_dest_keyring = key_ref_to_ptr(dkref);
+		return 0;
+	}
+
+	if (ringid == KEY_SPEC_REQKEY_AUTH_KEY)
+		return -EINVAL;
+
+	/* otherwise specify the destination keyring recorded in the
+	 * authorisation key (any KEY_SPEC_*_KEYRING) */
+	if (ringid >= KEY_SPEC_REQUESTOR_KEYRING) {
+		*_dest_keyring = rka->dest_keyring;
+		return 0;
+	}
+
+	return -ENOKEY;
+}
+
+/*
+ * change the request_key authorisation key on the current process
+ */
+static int keyctl_change_reqkey_auth(struct key *key)
+{
+	struct cred *new;
+
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+
+	key_put(new->request_key_auth);
+	new->request_key_auth = key_get(key);
+
+	return commit_creds(new);
+}
+
 /*****************************************************************************/
 /*
  * instantiate the key with the specified payload, and, if one is given, link
@@ -839,13 +893,15 @@
 			    size_t plen,
 			    key_serial_t ringid)
 {
+	const struct cred *cred = current_cred();
 	struct request_key_auth *rka;
-	struct key *instkey;
-	key_ref_t keyring_ref;
+	struct key *instkey, *dest_keyring;
 	void *payload;
 	long ret;
 	bool vm = false;
 
+	kenter("%d,,%zu,%d", id, plen, ringid);
+
 	ret = -EINVAL;
 	if (plen > 1024 * 1024 - 1)
 		goto error;
@@ -853,7 +909,7 @@
 	/* the appropriate instantiation authorisation key must have been
 	 * assumed before calling this */
 	ret = -EPERM;
-	instkey = current->request_key_auth;
+	instkey = cred->request_key_auth;
 	if (!instkey)
 		goto error;
 
@@ -883,28 +939,20 @@
 
 	/* find the destination keyring amongst those belonging to the
 	 * requesting task */
-	keyring_ref = NULL;
-	if (ringid) {
-		keyring_ref = lookup_user_key(rka->context, ringid, 1, 0,
-					      KEY_WRITE);
-		if (IS_ERR(keyring_ref)) {
-			ret = PTR_ERR(keyring_ref);
-			goto error2;
-		}
-	}
+	ret = get_instantiation_keyring(ringid, rka, &dest_keyring);
+	if (ret < 0)
+		goto error2;
 
 	/* instantiate the key and link it into a keyring */
 	ret = key_instantiate_and_link(rka->target_key, payload, plen,
-				       key_ref_to_ptr(keyring_ref), instkey);
+				       dest_keyring, instkey);
 
-	key_ref_put(keyring_ref);
+	key_put(dest_keyring);
 
 	/* discard the assumed authority if it's just been disabled by
 	 * instantiation of the key */
-	if (ret == 0) {
-		key_put(current->request_key_auth);
-		current->request_key_auth = NULL;
-	}
+	if (ret == 0)
+		keyctl_change_reqkey_auth(NULL);
 
 error2:
 	if (!vm)
@@ -923,15 +971,17 @@
  */
 long keyctl_negate_key(key_serial_t id, unsigned timeout, key_serial_t ringid)
 {
+	const struct cred *cred = current_cred();
 	struct request_key_auth *rka;
-	struct key *instkey;
-	key_ref_t keyring_ref;
+	struct key *instkey, *dest_keyring;
 	long ret;
 
+	kenter("%d,%u,%d", id, timeout, ringid);
+
 	/* the appropriate instantiation authorisation key must have been
 	 * assumed before calling this */
 	ret = -EPERM;
-	instkey = current->request_key_auth;
+	instkey = cred->request_key_auth;
 	if (!instkey)
 		goto error;
 
@@ -941,27 +991,20 @@
 
 	/* find the destination keyring if present (which must also be
 	 * writable) */
-	keyring_ref = NULL;
-	if (ringid) {
-		keyring_ref = lookup_user_key(NULL, ringid, 1, 0, KEY_WRITE);
-		if (IS_ERR(keyring_ref)) {
-			ret = PTR_ERR(keyring_ref);
-			goto error;
-		}
-	}
+	ret = get_instantiation_keyring(ringid, rka, &dest_keyring);
+	if (ret < 0)
+		goto error;
 
 	/* instantiate the key and link it into a keyring */
 	ret = key_negate_and_link(rka->target_key, timeout,
-				  key_ref_to_ptr(keyring_ref), instkey);
+				  dest_keyring, instkey);
 
-	key_ref_put(keyring_ref);
+	key_put(dest_keyring);
 
 	/* discard the assumed authority if it's just been disabled by
 	 * instantiation of the key */
-	if (ret == 0) {
-		key_put(current->request_key_auth);
-		current->request_key_auth = NULL;
-	}
+	if (ret == 0)
+		keyctl_change_reqkey_auth(NULL);
 
 error:
 	return ret;
@@ -975,35 +1018,56 @@
  */
 long keyctl_set_reqkey_keyring(int reqkey_defl)
 {
-	int ret;
+	struct cred *new;
+	int ret, old_setting;
+
+	old_setting = current_cred_xxx(jit_keyring);
+
+	if (reqkey_defl == KEY_REQKEY_DEFL_NO_CHANGE)
+		return old_setting;
+
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
 
 	switch (reqkey_defl) {
 	case KEY_REQKEY_DEFL_THREAD_KEYRING:
-		ret = install_thread_keyring(current);
+		ret = install_thread_keyring_to_cred(new);
 		if (ret < 0)
-			return ret;
+			goto error;
 		goto set;
 
 	case KEY_REQKEY_DEFL_PROCESS_KEYRING:
-		ret = install_process_keyring(current);
-		if (ret < 0)
-			return ret;
+		ret = install_process_keyring_to_cred(new);
+		if (ret < 0) {
+			if (ret != -EEXIST)
+				goto error;
+			ret = 0;
+		}
+		goto set;
 
 	case KEY_REQKEY_DEFL_DEFAULT:
 	case KEY_REQKEY_DEFL_SESSION_KEYRING:
 	case KEY_REQKEY_DEFL_USER_KEYRING:
 	case KEY_REQKEY_DEFL_USER_SESSION_KEYRING:
-	set:
-		current->jit_keyring = reqkey_defl;
+	case KEY_REQKEY_DEFL_REQUESTOR_KEYRING:
+		goto set;
 
 	case KEY_REQKEY_DEFL_NO_CHANGE:
-		return current->jit_keyring;
-
 	case KEY_REQKEY_DEFL_GROUP_KEYRING:
 	default:
-		return -EINVAL;
+		ret = -EINVAL;
+		goto error;
 	}
 
+set:
+	new->jit_keyring = reqkey_defl;
+	commit_creds(new);
+	return old_setting;
+error:
+	abort_creds(new);
+	return -EINVAL;
+
 } /* end keyctl_set_reqkey_keyring() */
 
 /*****************************************************************************/
@@ -1018,7 +1082,7 @@
 	time_t expiry;
 	long ret;
 
-	key_ref = lookup_user_key(NULL, id, 1, 1, KEY_SETATTR);
+	key_ref = lookup_user_key(id, 1, 1, KEY_SETATTR);
 	if (IS_ERR(key_ref)) {
 		ret = PTR_ERR(key_ref);
 		goto error;
@@ -1062,9 +1126,7 @@
 
 	/* we divest ourselves of authority if given an ID of 0 */
 	if (id == 0) {
-		key_put(current->request_key_auth);
-		current->request_key_auth = NULL;
-		ret = 0;
+		ret = keyctl_change_reqkey_auth(NULL);
 		goto error;
 	}
 
@@ -1079,10 +1141,12 @@
 		goto error;
 	}
 
-	key_put(current->request_key_auth);
-	current->request_key_auth = authkey;
-	ret = authkey->serial;
+	ret = keyctl_change_reqkey_auth(authkey);
+	if (ret < 0)
+		goto error;
+	key_put(authkey);
 
+	ret = authkey->serial;
 error:
 	return ret;
 
@@ -1105,7 +1169,7 @@
 	char *context;
 	long ret;
 
-	key_ref = lookup_user_key(NULL, keyid, 0, 1, KEY_VIEW);
+	key_ref = lookup_user_key(keyid, 0, 1, KEY_VIEW);
 	if (IS_ERR(key_ref)) {
 		if (PTR_ERR(key_ref) != -EACCES)
 			return PTR_ERR(key_ref);
@@ -1117,7 +1181,7 @@
 			return PTR_ERR(key_ref);
 		key_put(instkey);
 
-		key_ref = lookup_user_key(NULL, keyid, 0, 1, 0);
+		key_ref = lookup_user_key(keyid, 0, 1, 0);
 		if (IS_ERR(key_ref))
 			return PTR_ERR(key_ref);
 	}
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index a9ab8af..ed85157 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -16,6 +16,7 @@
 #include <linux/security.h>
 #include <linux/seq_file.h>
 #include <linux/err.h>
+#include <keys/keyring-type.h>
 #include <asm/uaccess.h>
 #include "internal.h"
 
@@ -244,14 +245,14 @@
  * allocate a keyring and link into the destination keyring
  */
 struct key *keyring_alloc(const char *description, uid_t uid, gid_t gid,
-			  struct task_struct *ctx, unsigned long flags,
+			  const struct cred *cred, unsigned long flags,
 			  struct key *dest)
 {
 	struct key *keyring;
 	int ret;
 
 	keyring = key_alloc(&key_type_keyring, description,
-			    uid, gid, ctx,
+			    uid, gid, cred,
 			    (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_ALL,
 			    flags);
 
@@ -280,7 +281,7 @@
  * - we propagate the possession attribute from the keyring ref to the key ref
  */
 key_ref_t keyring_search_aux(key_ref_t keyring_ref,
-			     struct task_struct *context,
+			     const struct cred *cred,
 			     struct key_type *type,
 			     const void *description,
 			     key_match_func_t match)
@@ -303,7 +304,7 @@
 	key_check(keyring);
 
 	/* top keyring must have search permission to begin the search */
-        err = key_task_permission(keyring_ref, context, KEY_SEARCH);
+        err = key_task_permission(keyring_ref, cred, KEY_SEARCH);
 	if (err < 0) {
 		key_ref = ERR_PTR(err);
 		goto error;
@@ -376,7 +377,7 @@
 
 		/* key must have search permissions */
 		if (key_task_permission(make_key_ref(key, possessed),
-					context, KEY_SEARCH) < 0)
+					cred, KEY_SEARCH) < 0)
 			continue;
 
 		/* we set a different error code if we pass a negative key */
@@ -403,7 +404,7 @@
 			continue;
 
 		if (key_task_permission(make_key_ref(key, possessed),
-					context, KEY_SEARCH) < 0)
+					cred, KEY_SEARCH) < 0)
 			continue;
 
 		/* stack the current position */
@@ -458,7 +459,7 @@
 	if (!type->match)
 		return ERR_PTR(-ENOKEY);
 
-	return keyring_search_aux(keyring, current,
+	return keyring_search_aux(keyring, current->cred,
 				  type, description, type->match);
 
 } /* end keyring_search() */
diff --git a/security/keys/permission.c b/security/keys/permission.c
index 3b41f9b..5d9fc7b 100644
--- a/security/keys/permission.c
+++ b/security/keys/permission.c
@@ -14,12 +14,19 @@
 #include "internal.h"
 
 /*****************************************************************************/
-/*
- * check to see whether permission is granted to use a key in the desired way,
- * but permit the security modules to override
+/**
+ * key_task_permission - Check a key can be used
+ * @key_ref: The key to check
+ * @cred: The credentials to use
+ * @perm: The permissions to check for
+ *
+ * Check to see whether permission is granted to use a key in the desired way,
+ * but permit the security modules to override.
+ *
+ * The caller must hold either a ref on cred or must hold the RCU readlock or a
+ * spinlock.
  */
-int key_task_permission(const key_ref_t key_ref,
-			struct task_struct *context,
+int key_task_permission(const key_ref_t key_ref, const struct cred *cred,
 			key_perm_t perm)
 {
 	struct key *key;
@@ -29,7 +36,7 @@
 	key = key_ref_to_ptr(key_ref);
 
 	/* use the second 8-bits of permissions for keys the caller owns */
-	if (key->uid == context->fsuid) {
+	if (key->uid == cred->fsuid) {
 		kperm = key->perm >> 16;
 		goto use_these_perms;
 	}
@@ -37,15 +44,12 @@
 	/* use the third 8-bits of permissions for keys the caller has a group
 	 * membership in common with */
 	if (key->gid != -1 && key->perm & KEY_GRP_ALL) {
-		if (key->gid == context->fsgid) {
+		if (key->gid == cred->fsgid) {
 			kperm = key->perm >> 8;
 			goto use_these_perms;
 		}
 
-		task_lock(context);
-		ret = groups_search(context->group_info, key->gid);
-		task_unlock(context);
-
+		ret = groups_search(cred->group_info, key->gid);
 		if (ret) {
 			kperm = key->perm >> 8;
 			goto use_these_perms;
@@ -56,6 +60,7 @@
 	kperm = key->perm;
 
 use_these_perms:
+
 	/* use the top 8-bits of permissions for keys the caller possesses
 	 * - possessor permissions are additive with other permissions
 	 */
@@ -68,7 +73,7 @@
 		return -EACCES;
 
 	/* let LSM be the final arbiter */
-	return security_key_permission(key_ref, context, perm);
+	return security_key_permission(key_ref, cred, perm);
 
 } /* end key_task_permission() */
 
diff --git a/security/keys/proc.c b/security/keys/proc.c
index f619170..7f508de 100644
--- a/security/keys/proc.c
+++ b/security/keys/proc.c
@@ -136,8 +136,12 @@
 	int rc;
 
 	/* check whether the current task is allowed to view the key (assuming
-	 * non-possession) */
-	rc = key_task_permission(make_key_ref(key, 0), current, KEY_VIEW);
+	 * non-possession)
+	 * - the caller holds a spinlock, and thus the RCU read lock, making our
+	 *   access to __current_cred() safe
+	 */
+	rc = key_task_permission(make_key_ref(key, 0), current_cred(),
+				 KEY_VIEW);
 	if (rc < 0)
 		return 0;
 
diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index 45b240a..2f5d89e 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -40,13 +40,17 @@
 /*
  * install user and user session keyrings for a particular UID
  */
-int install_user_keyrings(struct task_struct *tsk)
+int install_user_keyrings(void)
 {
-	struct user_struct *user = tsk->user;
+	struct user_struct *user;
+	const struct cred *cred;
 	struct key *uid_keyring, *session_keyring;
 	char buf[20];
 	int ret;
 
+	cred = current_cred();
+	user = cred->user;
+
 	kenter("%p{%u}", user, user->uid);
 
 	if (user->uid_keyring) {
@@ -67,7 +71,7 @@
 		uid_keyring = find_keyring_by_name(buf, true);
 		if (IS_ERR(uid_keyring)) {
 			uid_keyring = keyring_alloc(buf, user->uid, (gid_t) -1,
-						    tsk, KEY_ALLOC_IN_QUOTA,
+						    cred, KEY_ALLOC_IN_QUOTA,
 						    NULL);
 			if (IS_ERR(uid_keyring)) {
 				ret = PTR_ERR(uid_keyring);
@@ -83,7 +87,7 @@
 		if (IS_ERR(session_keyring)) {
 			session_keyring =
 				keyring_alloc(buf, user->uid, (gid_t) -1,
-					      tsk, KEY_ALLOC_IN_QUOTA, NULL);
+					      cred, KEY_ALLOC_IN_QUOTA, NULL);
 			if (IS_ERR(session_keyring)) {
 				ret = PTR_ERR(session_keyring);
 				goto error_release;
@@ -115,140 +119,128 @@
 	return ret;
 }
 
-/*****************************************************************************/
 /*
- * deal with the UID changing
+ * install a fresh thread keyring directly to new credentials
  */
-void switch_uid_keyring(struct user_struct *new_user)
+int install_thread_keyring_to_cred(struct cred *new)
 {
-#if 0 /* do nothing for now */
-	struct key *old;
+	struct key *keyring;
 
-	/* switch to the new user's session keyring if we were running under
-	 * root's default session keyring */
-	if (new_user->uid != 0 &&
-	    current->session_keyring == &root_session_keyring
-	    ) {
-		atomic_inc(&new_user->session_keyring->usage);
+	keyring = keyring_alloc("_tid", new->uid, new->gid, new,
+				KEY_ALLOC_QUOTA_OVERRUN, NULL);
+	if (IS_ERR(keyring))
+		return PTR_ERR(keyring);
 
-		task_lock(current);
-		old = current->session_keyring;
-		current->session_keyring = new_user->session_keyring;
-		task_unlock(current);
+	new->thread_keyring = keyring;
+	return 0;
+}
 
-		key_put(old);
-	}
-#endif
-
-} /* end switch_uid_keyring() */
-
-/*****************************************************************************/
 /*
  * install a fresh thread keyring, discarding the old one
  */
-int install_thread_keyring(struct task_struct *tsk)
+static int install_thread_keyring(void)
 {
-	struct key *keyring, *old;
-	char buf[20];
+	struct cred *new;
 	int ret;
 
-	sprintf(buf, "_tid.%u", tsk->pid);
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
 
-	keyring = keyring_alloc(buf, tsk->uid, tsk->gid, tsk,
-				KEY_ALLOC_QUOTA_OVERRUN, NULL);
-	if (IS_ERR(keyring)) {
-		ret = PTR_ERR(keyring);
-		goto error;
+	BUG_ON(new->thread_keyring);
+
+	ret = install_thread_keyring_to_cred(new);
+	if (ret < 0) {
+		abort_creds(new);
+		return ret;
 	}
 
-	task_lock(tsk);
-	old = tsk->thread_keyring;
-	tsk->thread_keyring = keyring;
-	task_unlock(tsk);
+	return commit_creds(new);
+}
 
-	ret = 0;
-
-	key_put(old);
-error:
-	return ret;
-
-} /* end install_thread_keyring() */
-
-/*****************************************************************************/
 /*
- * make sure a process keyring is installed
+ * install a process keyring directly to a credentials struct
+ * - returns -EEXIST if there was already a process keyring, 0 if one installed,
+ *   and other -ve on any other error
  */
-int install_process_keyring(struct task_struct *tsk)
+int install_process_keyring_to_cred(struct cred *new)
 {
 	struct key *keyring;
-	char buf[20];
 	int ret;
 
-	might_sleep();
+	if (new->tgcred->process_keyring)
+		return -EEXIST;
 
-	if (!tsk->signal->process_keyring) {
-		sprintf(buf, "_pid.%u", tsk->tgid);
+	keyring = keyring_alloc("_pid", new->uid, new->gid,
+				new, KEY_ALLOC_QUOTA_OVERRUN, NULL);
+	if (IS_ERR(keyring))
+		return PTR_ERR(keyring);
 
-		keyring = keyring_alloc(buf, tsk->uid, tsk->gid, tsk,
-					KEY_ALLOC_QUOTA_OVERRUN, NULL);
-		if (IS_ERR(keyring)) {
-			ret = PTR_ERR(keyring);
-			goto error;
-		}
+	spin_lock_irq(&new->tgcred->lock);
+	if (!new->tgcred->process_keyring) {
+		new->tgcred->process_keyring = keyring;
+		keyring = NULL;
+		ret = 0;
+	} else {
+		ret = -EEXIST;
+	}
+	spin_unlock_irq(&new->tgcred->lock);
+	key_put(keyring);
+	return ret;
+}
 
-		/* attach keyring */
-		spin_lock_irq(&tsk->sighand->siglock);
-		if (!tsk->signal->process_keyring) {
-			tsk->signal->process_keyring = keyring;
-			keyring = NULL;
-		}
-		spin_unlock_irq(&tsk->sighand->siglock);
+/*
+ * make sure a process keyring is installed
+ * - we
+ */
+static int install_process_keyring(void)
+{
+	struct cred *new;
+	int ret;
 
-		key_put(keyring);
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+
+	ret = install_process_keyring_to_cred(new);
+	if (ret < 0) {
+		abort_creds(new);
+		return ret != -EEXIST ?: 0;
 	}
 
-	ret = 0;
-error:
-	return ret;
+	return commit_creds(new);
+}
 
-} /* end install_process_keyring() */
-
-/*****************************************************************************/
 /*
- * install a session keyring, discarding the old one
- * - if a keyring is not supplied, an empty one is invented
+ * install a session keyring directly to a credentials struct
  */
-static int install_session_keyring(struct task_struct *tsk,
-				   struct key *keyring)
+static int install_session_keyring_to_cred(struct cred *cred,
+					   struct key *keyring)
 {
 	unsigned long flags;
 	struct key *old;
-	char buf[20];
 
 	might_sleep();
 
 	/* create an empty session keyring */
 	if (!keyring) {
-		sprintf(buf, "_ses.%u", tsk->tgid);
-
 		flags = KEY_ALLOC_QUOTA_OVERRUN;
-		if (tsk->signal->session_keyring)
+		if (cred->tgcred->session_keyring)
 			flags = KEY_ALLOC_IN_QUOTA;
 
-		keyring = keyring_alloc(buf, tsk->uid, tsk->gid, tsk,
-					flags, NULL);
+		keyring = keyring_alloc("_ses", cred->uid, cred->gid,
+					cred, flags, NULL);
 		if (IS_ERR(keyring))
 			return PTR_ERR(keyring);
-	}
-	else {
+	} else {
 		atomic_inc(&keyring->usage);
 	}
 
 	/* install the keyring */
-	spin_lock_irq(&tsk->sighand->siglock);
-	old = tsk->signal->session_keyring;
-	rcu_assign_pointer(tsk->signal->session_keyring, keyring);
-	spin_unlock_irq(&tsk->sighand->siglock);
+	spin_lock_irq(&cred->tgcred->lock);
+	old = cred->tgcred->session_keyring;
+	rcu_assign_pointer(cred->tgcred->session_keyring, keyring);
+	spin_unlock_irq(&cred->tgcred->lock);
 
 	/* we're using RCU on the pointer, but there's no point synchronising
 	 * on it if it didn't previously point to anything */
@@ -258,110 +250,29 @@
 	}
 
 	return 0;
+}
 
-} /* end install_session_keyring() */
-
-/*****************************************************************************/
 /*
- * copy the keys in a thread group for fork without CLONE_THREAD
+ * install a session keyring, discarding the old one
+ * - if a keyring is not supplied, an empty one is invented
  */
-int copy_thread_group_keys(struct task_struct *tsk)
+static int install_session_keyring(struct key *keyring)
 {
-	key_check(current->thread_group->session_keyring);
-	key_check(current->thread_group->process_keyring);
+	struct cred *new;
+	int ret;
 
-	/* no process keyring yet */
-	tsk->signal->process_keyring = NULL;
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
 
-	/* same session keyring */
-	rcu_read_lock();
-	tsk->signal->session_keyring =
-		key_get(rcu_dereference(current->signal->session_keyring));
-	rcu_read_unlock();
+	ret = install_session_keyring_to_cred(new, NULL);
+	if (ret < 0) {
+		abort_creds(new);
+		return ret;
+	}
 
-	return 0;
-
-} /* end copy_thread_group_keys() */
-
-/*****************************************************************************/
-/*
- * copy the keys for fork
- */
-int copy_keys(unsigned long clone_flags, struct task_struct *tsk)
-{
-	key_check(tsk->thread_keyring);
-	key_check(tsk->request_key_auth);
-
-	/* no thread keyring yet */
-	tsk->thread_keyring = NULL;
-
-	/* copy the request_key() authorisation for this thread */
-	key_get(tsk->request_key_auth);
-
-	return 0;
-
-} /* end copy_keys() */
-
-/*****************************************************************************/
-/*
- * dispose of thread group keys upon thread group destruction
- */
-void exit_thread_group_keys(struct signal_struct *tg)
-{
-	key_put(tg->session_keyring);
-	key_put(tg->process_keyring);
-
-} /* end exit_thread_group_keys() */
-
-/*****************************************************************************/
-/*
- * dispose of per-thread keys upon thread exit
- */
-void exit_keys(struct task_struct *tsk)
-{
-	key_put(tsk->thread_keyring);
-	key_put(tsk->request_key_auth);
-
-} /* end exit_keys() */
-
-/*****************************************************************************/
-/*
- * deal with execve()
- */
-int exec_keys(struct task_struct *tsk)
-{
-	struct key *old;
-
-	/* newly exec'd tasks don't get a thread keyring */
-	task_lock(tsk);
-	old = tsk->thread_keyring;
-	tsk->thread_keyring = NULL;
-	task_unlock(tsk);
-
-	key_put(old);
-
-	/* discard the process keyring from a newly exec'd task */
-	spin_lock_irq(&tsk->sighand->siglock);
-	old = tsk->signal->process_keyring;
-	tsk->signal->process_keyring = NULL;
-	spin_unlock_irq(&tsk->sighand->siglock);
-
-	key_put(old);
-
-	return 0;
-
-} /* end exec_keys() */
-
-/*****************************************************************************/
-/*
- * deal with SUID programs
- * - we might want to make this invent a new session keyring
- */
-int suid_keys(struct task_struct *tsk)
-{
-	return 0;
-
-} /* end suid_keys() */
+	return commit_creds(new);
+}
 
 /*****************************************************************************/
 /*
@@ -370,10 +281,11 @@
 void key_fsuid_changed(struct task_struct *tsk)
 {
 	/* update the ownership of the thread keyring */
-	if (tsk->thread_keyring) {
-		down_write(&tsk->thread_keyring->sem);
-		tsk->thread_keyring->uid = tsk->fsuid;
-		up_write(&tsk->thread_keyring->sem);
+	BUG_ON(!tsk->cred);
+	if (tsk->cred->thread_keyring) {
+		down_write(&tsk->cred->thread_keyring->sem);
+		tsk->cred->thread_keyring->uid = tsk->cred->fsuid;
+		up_write(&tsk->cred->thread_keyring->sem);
 	}
 
 } /* end key_fsuid_changed() */
@@ -385,10 +297,11 @@
 void key_fsgid_changed(struct task_struct *tsk)
 {
 	/* update the ownership of the thread keyring */
-	if (tsk->thread_keyring) {
-		down_write(&tsk->thread_keyring->sem);
-		tsk->thread_keyring->gid = tsk->fsgid;
-		up_write(&tsk->thread_keyring->sem);
+	BUG_ON(!tsk->cred);
+	if (tsk->cred->thread_keyring) {
+		down_write(&tsk->cred->thread_keyring->sem);
+		tsk->cred->thread_keyring->gid = tsk->cred->fsgid;
+		up_write(&tsk->cred->thread_keyring->sem);
 	}
 
 } /* end key_fsgid_changed() */
@@ -404,7 +317,7 @@
 key_ref_t search_process_keyrings(struct key_type *type,
 				  const void *description,
 				  key_match_func_t match,
-				  struct task_struct *context)
+				  const struct cred *cred)
 {
 	struct request_key_auth *rka;
 	key_ref_t key_ref, ret, err;
@@ -423,10 +336,10 @@
 	err = ERR_PTR(-EAGAIN);
 
 	/* search the thread keyring first */
-	if (context->thread_keyring) {
+	if (cred->thread_keyring) {
 		key_ref = keyring_search_aux(
-			make_key_ref(context->thread_keyring, 1),
-			context, type, description, match);
+			make_key_ref(cred->thread_keyring, 1),
+			cred, type, description, match);
 		if (!IS_ERR(key_ref))
 			goto found;
 
@@ -444,10 +357,10 @@
 	}
 
 	/* search the process keyring second */
-	if (context->signal->process_keyring) {
+	if (cred->tgcred->process_keyring) {
 		key_ref = keyring_search_aux(
-			make_key_ref(context->signal->process_keyring, 1),
-			context, type, description, match);
+			make_key_ref(cred->tgcred->process_keyring, 1),
+			cred, type, description, match);
 		if (!IS_ERR(key_ref))
 			goto found;
 
@@ -465,13 +378,13 @@
 	}
 
 	/* search the session keyring */
-	if (context->signal->session_keyring) {
+	if (cred->tgcred->session_keyring) {
 		rcu_read_lock();
 		key_ref = keyring_search_aux(
 			make_key_ref(rcu_dereference(
-					     context->signal->session_keyring),
+					     cred->tgcred->session_keyring),
 				     1),
-			context, type, description, match);
+			cred, type, description, match);
 		rcu_read_unlock();
 
 		if (!IS_ERR(key_ref))
@@ -490,10 +403,10 @@
 		}
 	}
 	/* or search the user-session keyring */
-	else if (context->user->session_keyring) {
+	else if (cred->user->session_keyring) {
 		key_ref = keyring_search_aux(
-			make_key_ref(context->user->session_keyring, 1),
-			context, type, description, match);
+			make_key_ref(cred->user->session_keyring, 1),
+			cred, type, description, match);
 		if (!IS_ERR(key_ref))
 			goto found;
 
@@ -514,20 +427,20 @@
 	 * search the keyrings of the process mentioned there
 	 * - we don't permit access to request_key auth keys via this method
 	 */
-	if (context->request_key_auth &&
-	    context == current &&
+	if (cred->request_key_auth &&
+	    cred == current_cred() &&
 	    type != &key_type_request_key_auth
 	    ) {
 		/* defend against the auth key being revoked */
-		down_read(&context->request_key_auth->sem);
+		down_read(&cred->request_key_auth->sem);
 
-		if (key_validate(context->request_key_auth) == 0) {
-			rka = context->request_key_auth->payload.data;
+		if (key_validate(cred->request_key_auth) == 0) {
+			rka = cred->request_key_auth->payload.data;
 
 			key_ref = search_process_keyrings(type, description,
-							  match, rka->context);
+							  match, rka->cred);
 
-			up_read(&context->request_key_auth->sem);
+			up_read(&cred->request_key_auth->sem);
 
 			if (!IS_ERR(key_ref))
 				goto found;
@@ -544,7 +457,7 @@
 				break;
 			}
 		} else {
-			up_read(&context->request_key_auth->sem);
+			up_read(&cred->request_key_auth->sem);
 		}
 	}
 
@@ -572,93 +485,98 @@
  * - don't create special keyrings unless so requested
  * - partially constructed keys aren't found unless requested
  */
-key_ref_t lookup_user_key(struct task_struct *context, key_serial_t id,
-			  int create, int partial, key_perm_t perm)
+key_ref_t lookup_user_key(key_serial_t id, int create, int partial,
+			  key_perm_t perm)
 {
-	key_ref_t key_ref, skey_ref;
+	struct request_key_auth *rka;
+	const struct cred *cred;
 	struct key *key;
+	key_ref_t key_ref, skey_ref;
 	int ret;
 
-	if (!context)
-		context = current;
-
+try_again:
+	cred = get_current_cred();
 	key_ref = ERR_PTR(-ENOKEY);
 
 	switch (id) {
 	case KEY_SPEC_THREAD_KEYRING:
-		if (!context->thread_keyring) {
+		if (!cred->thread_keyring) {
 			if (!create)
 				goto error;
 
-			ret = install_thread_keyring(context);
+			ret = install_thread_keyring();
 			if (ret < 0) {
 				key = ERR_PTR(ret);
 				goto error;
 			}
+			goto reget_creds;
 		}
 
-		key = context->thread_keyring;
+		key = cred->thread_keyring;
 		atomic_inc(&key->usage);
 		key_ref = make_key_ref(key, 1);
 		break;
 
 	case KEY_SPEC_PROCESS_KEYRING:
-		if (!context->signal->process_keyring) {
+		if (!cred->tgcred->process_keyring) {
 			if (!create)
 				goto error;
 
-			ret = install_process_keyring(context);
+			ret = install_process_keyring();
 			if (ret < 0) {
 				key = ERR_PTR(ret);
 				goto error;
 			}
+			goto reget_creds;
 		}
 
-		key = context->signal->process_keyring;
+		key = cred->tgcred->process_keyring;
 		atomic_inc(&key->usage);
 		key_ref = make_key_ref(key, 1);
 		break;
 
 	case KEY_SPEC_SESSION_KEYRING:
-		if (!context->signal->session_keyring) {
+		if (!cred->tgcred->session_keyring) {
 			/* always install a session keyring upon access if one
 			 * doesn't exist yet */
-			ret = install_user_keyrings(context);
+			ret = install_user_keyrings();
 			if (ret < 0)
 				goto error;
 			ret = install_session_keyring(
-				context, context->user->session_keyring);
+				cred->user->session_keyring);
+
 			if (ret < 0)
 				goto error;
+			goto reget_creds;
 		}
 
 		rcu_read_lock();
-		key = rcu_dereference(context->signal->session_keyring);
+		key = rcu_dereference(cred->tgcred->session_keyring);
 		atomic_inc(&key->usage);
 		rcu_read_unlock();
 		key_ref = make_key_ref(key, 1);
 		break;
 
 	case KEY_SPEC_USER_KEYRING:
-		if (!context->user->uid_keyring) {
-			ret = install_user_keyrings(context);
+		if (!cred->user->uid_keyring) {
+			ret = install_user_keyrings();
 			if (ret < 0)
 				goto error;
 		}
 
-		key = context->user->uid_keyring;
+		key = cred->user->uid_keyring;
 		atomic_inc(&key->usage);
 		key_ref = make_key_ref(key, 1);
 		break;
 
 	case KEY_SPEC_USER_SESSION_KEYRING:
-		if (!context->user->session_keyring) {
-			ret = install_user_keyrings(context);
+		if (!cred->user->session_keyring) {
+			ret = install_user_keyrings();
 			if (ret < 0)
 				goto error;
 		}
 
-		key = context->user->session_keyring;
+		key = cred->user->session_keyring;
 		atomic_inc(&key->usage);
 		key_ref = make_key_ref(key, 1);
 		break;
@@ -669,7 +587,7 @@
 		goto error;
 
 	case KEY_SPEC_REQKEY_AUTH_KEY:
-		key = context->request_key_auth;
+		key = cred->request_key_auth;
 		if (!key)
 			goto error;
 
@@ -677,6 +595,25 @@
 		key_ref = make_key_ref(key, 1);
 		break;
 
+	case KEY_SPEC_REQUESTOR_KEYRING:
+		if (!cred->request_key_auth)
+			goto error;
+
+		down_read(&cred->request_key_auth->sem);
+		if (cred->request_key_auth->flags & KEY_FLAG_REVOKED) {
+			key_ref = ERR_PTR(-EKEYREVOKED);
+			key = NULL;
+		} else {
+			rka = cred->request_key_auth->payload.data;
+			key = rka->dest_keyring;
+			atomic_inc(&key->usage);
+		}
+		up_read(&cred->request_key_auth->sem);
+		if (!key)
+			goto error;
+		key_ref = make_key_ref(key, 1);
+		break;
+
 	default:
 		key_ref = ERR_PTR(-EINVAL);
 		if (id < 1)
@@ -693,7 +630,7 @@
 		/* check to see if we possess the key */
 		skey_ref = search_process_keyrings(key->type, key,
 						   lookup_user_key_possessed,
-						   current);
+						   cred);
 
 		if (!IS_ERR(skey_ref)) {
 			key_put(key);
@@ -725,11 +662,12 @@
 		goto invalid_key;
 
 	/* check the permissions */
-	ret = key_task_permission(key_ref, context, perm);
+	ret = key_task_permission(key_ref, cred, perm);
 	if (ret < 0)
 		goto invalid_key;
 
 error:
+	put_cred(cred);
 	return key_ref;
 
 invalid_key:
@@ -737,6 +675,12 @@
 	key_ref = ERR_PTR(ret);
 	goto error;
 
+	/* if we attempted to install a keyring, then it may have caused new
+	 * creds to be installed */
+reget_creds:
+	put_cred(cred);
+	goto try_again;
+
 } /* end lookup_user_key() */
 
 /*****************************************************************************/
@@ -748,20 +692,33 @@
  */
 long join_session_keyring(const char *name)
 {
-	struct task_struct *tsk = current;
+	const struct cred *old;
+	struct cred *new;
 	struct key *keyring;
-	long ret;
+	long ret, serial;
+
+	/* only permit this if there's a single thread in the thread group -
+	 * this avoids us having to adjust the creds on all threads and risking
+	 * ENOMEM */
+	if (!is_single_threaded(current))
+		return -EMLINK;
+
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+	old = current_cred();
 
 	/* if no name is provided, install an anonymous keyring */
 	if (!name) {
-		ret = install_session_keyring(tsk, NULL);
+		ret = install_session_keyring_to_cred(new, NULL);
 		if (ret < 0)
 			goto error;
 
-		rcu_read_lock();
-		ret = rcu_dereference(tsk->signal->session_keyring)->serial;
-		rcu_read_unlock();
-		goto error;
+		serial = new->tgcred->session_keyring->serial;
+		ret = commit_creds(new);
+		if (ret == 0)
+			ret = serial;
+		goto okay;
 	}
 
 	/* allow the user to join or create a named keyring */
@@ -771,29 +728,33 @@
 	keyring = find_keyring_by_name(name, false);
 	if (PTR_ERR(keyring) == -ENOKEY) {
 		/* not found - try and create a new one */
-		keyring = keyring_alloc(name, tsk->uid, tsk->gid, tsk,
+		keyring = keyring_alloc(name, old->uid, old->gid, old,
 					KEY_ALLOC_IN_QUOTA, NULL);
 		if (IS_ERR(keyring)) {
 			ret = PTR_ERR(keyring);
 			goto error2;
 		}
-	}
-	else if (IS_ERR(keyring)) {
+	} else if (IS_ERR(keyring)) {
 		ret = PTR_ERR(keyring);
 		goto error2;
 	}
 
 	/* we've got a keyring - now to install it */
-	ret = install_session_keyring(tsk, keyring);
+	ret = install_session_keyring_to_cred(new, keyring);
 	if (ret < 0)
 		goto error2;
 
+	commit_creds(new);
+	mutex_unlock(&key_session_mutex);
+
 	ret = keyring->serial;
 	key_put(keyring);
+okay:
+	return ret;
 
 error2:
 	mutex_unlock(&key_session_mutex);
 error:
+	abort_creds(new);
 	return ret;
-
-} /* end join_session_keyring() */
+}
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index abea08f..0e04f72 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -19,6 +19,8 @@
 #include <linux/slab.h>
 #include "internal.h"
 
+#define key_negative_timeout	60	/* default timeout on a negative key's existence */
+
 /*
  * wait_on_bit() sleep function for uninterruptible waiting
  */
@@ -64,7 +66,7 @@
 				 const char *op,
 				 void *aux)
 {
-	struct task_struct *tsk = current;
+	const struct cred *cred = current_cred();
 	key_serial_t prkey, sskey;
 	struct key *key = cons->key, *authkey = cons->authkey, *keyring;
 	char *argv[9], *envp[3], uid_str[12], gid_str[12];
@@ -74,15 +76,17 @@
 
 	kenter("{%d},{%d},%s", key->serial, authkey->serial, op);
 
-	ret = install_user_keyrings(tsk);
+	ret = install_user_keyrings();
 	if (ret < 0)
 		goto error_alloc;
 
 	/* allocate a new session keyring */
 	sprintf(desc, "_req.%u", key->serial);
 
-	keyring = keyring_alloc(desc, current->fsuid, current->fsgid, current,
+	cred = get_current_cred();
+	keyring = keyring_alloc(desc, cred->fsuid, cred->fsgid, cred,
 				KEY_ALLOC_QUOTA_OVERRUN, NULL);
+	put_cred(cred);
 	if (IS_ERR(keyring)) {
 		ret = PTR_ERR(keyring);
 		goto error_alloc;
@@ -94,29 +98,24 @@
 		goto error_link;
 
 	/* record the UID and GID */
-	sprintf(uid_str, "%d", current->fsuid);
-	sprintf(gid_str, "%d", current->fsgid);
+	sprintf(uid_str, "%d", cred->fsuid);
+	sprintf(gid_str, "%d", cred->fsgid);
 
 	/* we say which key is under construction */
 	sprintf(key_str, "%d", key->serial);
 
 	/* we specify the process's default keyrings */
 	sprintf(keyring_str[0], "%d",
-		tsk->thread_keyring ? tsk->thread_keyring->serial : 0);
+		cred->thread_keyring ? cred->thread_keyring->serial : 0);
 
 	prkey = 0;
-	if (tsk->signal->process_keyring)
-		prkey = tsk->signal->process_keyring->serial;
+	if (cred->tgcred->process_keyring)
+		prkey = cred->tgcred->process_keyring->serial;
 
-	sprintf(keyring_str[1], "%d", prkey);
-
-	if (tsk->signal->session_keyring) {
-		rcu_read_lock();
-		sskey = rcu_dereference(tsk->signal->session_keyring)->serial;
-		rcu_read_unlock();
-	} else {
-		sskey = tsk->user->session_keyring->serial;
-	}
+	if (cred->tgcred->session_keyring)
+		sskey = rcu_dereference(cred->tgcred->session_keyring)->serial;
+	else
+		sskey = cred->user->session_keyring->serial;
 
 	sprintf(keyring_str[2], "%d", sskey);
 
@@ -157,8 +156,8 @@
 	key_put(keyring);
 
 error_alloc:
-	kleave(" = %d", ret);
 	complete_request_key(cons, ret);
+	kleave(" = %d", ret);
 	return ret;
 }
 
@@ -167,7 +166,8 @@
  * - we ignore program failure and go on key status instead
  */
 static int construct_key(struct key *key, const void *callout_info,
-			 size_t callout_len, void *aux)
+			 size_t callout_len, void *aux,
+			 struct key *dest_keyring)
 {
 	struct key_construction *cons;
 	request_key_actor_t actor;
@@ -181,7 +181,8 @@
 		return -ENOMEM;
 
 	/* allocate an authorisation key */
-	authkey = request_key_auth_new(key, callout_info, callout_len);
+	authkey = request_key_auth_new(key, callout_info, callout_len,
+				       dest_keyring);
 	if (IS_ERR(authkey)) {
 		kfree(cons);
 		ret = PTR_ERR(authkey);
@@ -209,46 +210,67 @@
 }
 
 /*
- * link a key to the appropriate destination keyring
- * - the caller must hold a write lock on the destination keyring
+ * get the appropriate destination keyring for the request
+ * - we return whatever keyring we select with an extra reference upon it which
+ *   the caller must release
  */
-static void construct_key_make_link(struct key *key, struct key *dest_keyring)
+static void construct_get_dest_keyring(struct key **_dest_keyring)
 {
-	struct task_struct *tsk = current;
-	struct key *drop = NULL;
+	struct request_key_auth *rka;
+	const struct cred *cred = current_cred();
+	struct key *dest_keyring = *_dest_keyring, *authkey;
 
-	kenter("{%d},%p", key->serial, dest_keyring);
+	kenter("%p", dest_keyring);
 
 	/* find the appropriate keyring */
-	if (!dest_keyring) {
-		switch (tsk->jit_keyring) {
+	if (dest_keyring) {
+		/* the caller supplied one */
+		key_get(dest_keyring);
+	} else {
+		/* use a default keyring; falling through the cases until we
+		 * find one that we actually have */
+		switch (cred->jit_keyring) {
 		case KEY_REQKEY_DEFL_DEFAULT:
+		case KEY_REQKEY_DEFL_REQUESTOR_KEYRING:
+			if (cred->request_key_auth) {
+				authkey = cred->request_key_auth;
+				down_read(&authkey->sem);
+				rka = authkey->payload.data;
+				if (!test_bit(KEY_FLAG_REVOKED,
+					      &authkey->flags))
+					dest_keyring =
+						key_get(rka->dest_keyring);
+				up_read(&authkey->sem);
+				if (dest_keyring)
+					break;
+			}
+
 		case KEY_REQKEY_DEFL_THREAD_KEYRING:
-			dest_keyring = tsk->thread_keyring;
+			dest_keyring = key_get(cred->thread_keyring);
 			if (dest_keyring)
 				break;
 
 		case KEY_REQKEY_DEFL_PROCESS_KEYRING:
-			dest_keyring = tsk->signal->process_keyring;
+			dest_keyring = key_get(cred->tgcred->process_keyring);
 			if (dest_keyring)
 				break;
 
 		case KEY_REQKEY_DEFL_SESSION_KEYRING:
 			rcu_read_lock();
 			dest_keyring = key_get(
-				rcu_dereference(tsk->signal->session_keyring));
+				rcu_dereference(cred->tgcred->session_keyring));
 			rcu_read_unlock();
-			drop = dest_keyring;
 
 			if (dest_keyring)
 				break;
 
 		case KEY_REQKEY_DEFL_USER_SESSION_KEYRING:
-			dest_keyring = tsk->user->session_keyring;
+			dest_keyring =
+				key_get(cred->user->session_keyring);
 			break;
 
 		case KEY_REQKEY_DEFL_USER_KEYRING:
-			dest_keyring = tsk->user->uid_keyring;
+			dest_keyring = key_get(cred->user->uid_keyring);
 			break;
 
 		case KEY_REQKEY_DEFL_GROUP_KEYRING:
@@ -257,10 +279,9 @@
 		}
 	}
 
-	/* and attach the key to it */
-	__key_link(dest_keyring, key);
-	key_put(drop);
-	kleave("");
+	*_dest_keyring = dest_keyring;
+	kleave(" [dk %d]", key_serial(dest_keyring));
+	return;
 }
 
 /*
@@ -275,6 +296,7 @@
 			       struct key_user *user,
 			       struct key **_key)
 {
+	const struct cred *cred = current_cred();
 	struct key *key;
 	key_ref_t key_ref;
 
@@ -282,33 +304,28 @@
 
 	mutex_lock(&user->cons_lock);
 
-	key = key_alloc(type, description,
-			current->fsuid, current->fsgid, current, KEY_POS_ALL,
-			flags);
+	key = key_alloc(type, description, cred->fsuid, cred->fsgid, cred,
+			KEY_POS_ALL, flags);
 	if (IS_ERR(key))
 		goto alloc_failed;
 
 	set_bit(KEY_FLAG_USER_CONSTRUCT, &key->flags);
 
-	if (dest_keyring)
-		down_write(&dest_keyring->sem);
+	down_write(&dest_keyring->sem);
 
 	/* attach the key to the destination keyring under lock, but we do need
 	 * to do another check just in case someone beat us to it whilst we
 	 * waited for locks */
 	mutex_lock(&key_construction_mutex);
 
-	key_ref = search_process_keyrings(type, description, type->match,
-					  current);
+	key_ref = search_process_keyrings(type, description, type->match, cred);
 	if (!IS_ERR(key_ref))
 		goto key_already_present;
 
-	if (dest_keyring)
-		construct_key_make_link(key, dest_keyring);
+	__key_link(dest_keyring, key);
 
 	mutex_unlock(&key_construction_mutex);
-	if (dest_keyring)
-		up_write(&dest_keyring->sem);
+	up_write(&dest_keyring->sem);
 	mutex_unlock(&user->cons_lock);
 	*_key = key;
 	kleave(" = 0 [%d]", key_serial(key));
@@ -346,25 +363,36 @@
 	struct key *key;
 	int ret;
 
-	user = key_user_lookup(current->fsuid);
+	kenter("");
+
+	user = key_user_lookup(current_fsuid());
 	if (!user)
 		return ERR_PTR(-ENOMEM);
 
+	construct_get_dest_keyring(&dest_keyring);
+
 	ret = construct_alloc_key(type, description, dest_keyring, flags, user,
 				  &key);
 	key_user_put(user);
 
 	if (ret == 0) {
-		ret = construct_key(key, callout_info, callout_len, aux);
-		if (ret < 0)
+		ret = construct_key(key, callout_info, callout_len, aux,
+				    dest_keyring);
+		if (ret < 0) {
+			kdebug("cons failed");
 			goto construction_failed;
+		}
 	}
 
+	key_put(dest_keyring);
+	kleave(" = key %d", key_serial(key));
 	return key;
 
 construction_failed:
 	key_negate_and_link(key, key_negative_timeout, NULL, NULL);
 	key_put(key);
+	key_put(dest_keyring);
+	kleave(" = %d", ret);
 	return ERR_PTR(ret);
 }
 
@@ -383,6 +411,7 @@
 				 struct key *dest_keyring,
 				 unsigned long flags)
 {
+	const struct cred *cred = current_cred();
 	struct key *key;
 	key_ref_t key_ref;
 
@@ -392,7 +421,7 @@
 
 	/* search all the process keyrings for a key */
 	key_ref = search_process_keyrings(type, description, type->match,
-					  current);
+					  cred);
 
 	if (!IS_ERR(key_ref)) {
 		key = key_ref_to_ptr(key_ref);
diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index bd237b0..8674715 100644
--- a/security/keys/request_key_auth.c
+++ b/security/keys/request_key_auth.c
@@ -105,9 +105,9 @@
 
 	kenter("{%d}", key->serial);
 
-	if (rka->context) {
-		put_task_struct(rka->context);
-		rka->context = NULL;
+	if (rka->cred) {
+		put_cred(rka->cred);
+		rka->cred = NULL;
 	}
 
 } /* end request_key_auth_revoke() */
@@ -122,12 +122,13 @@
 
 	kenter("{%d}", key->serial);
 
-	if (rka->context) {
-		put_task_struct(rka->context);
-		rka->context = NULL;
+	if (rka->cred) {
+		put_cred(rka->cred);
+		rka->cred = NULL;
 	}
 
 	key_put(rka->target_key);
+	key_put(rka->dest_keyring);
 	kfree(rka->callout_info);
 	kfree(rka);
 
@@ -139,9 +140,10 @@
  * access to the caller's security data
  */
 struct key *request_key_auth_new(struct key *target, const void *callout_info,
-				 size_t callout_len)
+				 size_t callout_len, struct key *dest_keyring)
 {
 	struct request_key_auth *rka, *irka;
+	const struct cred *cred = current->cred;
 	struct key *authkey = NULL;
 	char desc[20];
 	int ret;
@@ -163,31 +165,29 @@
 
 	/* see if the calling process is already servicing the key request of
 	 * another process */
-	if (current->request_key_auth) {
+	if (cred->request_key_auth) {
 		/* it is - use that instantiation context here too */
-		down_read(&current->request_key_auth->sem);
+		down_read(&cred->request_key_auth->sem);
 
 		/* if the auth key has been revoked, then the key we're
 		 * servicing is already instantiated */
-		if (test_bit(KEY_FLAG_REVOKED,
-			     &current->request_key_auth->flags))
+		if (test_bit(KEY_FLAG_REVOKED, &cred->request_key_auth->flags))
 			goto auth_key_revoked;
 
-		irka = current->request_key_auth->payload.data;
-		rka->context = irka->context;
+		irka = cred->request_key_auth->payload.data;
+		rka->cred = get_cred(irka->cred);
 		rka->pid = irka->pid;
-		get_task_struct(rka->context);
 
-		up_read(&current->request_key_auth->sem);
+		up_read(&cred->request_key_auth->sem);
 	}
 	else {
 		/* it isn't - use this process as the context */
-		rka->context = current;
+		rka->cred = get_cred(cred);
 		rka->pid = current->pid;
-		get_task_struct(rka->context);
 	}
 
 	rka->target_key = key_get(target);
+	rka->dest_keyring = key_get(dest_keyring);
 	memcpy(rka->callout_info, callout_info, callout_len);
 	rka->callout_len = callout_len;
 
@@ -195,7 +195,7 @@
 	sprintf(desc, "%x", target->serial);
 
 	authkey = key_alloc(&key_type_request_key_auth, desc,
-			    current->fsuid, current->fsgid, current,
+			    cred->fsuid, cred->fsgid, cred,
 			    KEY_POS_VIEW | KEY_POS_READ | KEY_POS_SEARCH |
 			    KEY_USR_VIEW, KEY_ALLOC_NOT_IN_QUOTA);
 	if (IS_ERR(authkey)) {
@@ -203,16 +203,16 @@
 		goto error_alloc;
 	}
 
-	/* construct and attach to the keyring */
+	/* construct the auth key */
 	ret = key_instantiate_and_link(authkey, rka, 0, NULL, NULL);
 	if (ret < 0)
 		goto error_inst;
 
-	kleave(" = {%d}", authkey->serial);
+	kleave(" = {%d,%d}", authkey->serial, atomic_read(&authkey->usage));
 	return authkey;
 
 auth_key_revoked:
-	up_read(&current->request_key_auth->sem);
+	up_read(&cred->request_key_auth->sem);
 	kfree(rka->callout_info);
 	kfree(rka);
 	kleave("= -EKEYREVOKED");
@@ -223,6 +223,7 @@
 	key_put(authkey);
 error_alloc:
 	key_put(rka->target_key);
+	key_put(rka->dest_keyring);
 	kfree(rka->callout_info);
 	kfree(rka);
 	kleave("= %d", ret);
@@ -254,6 +255,7 @@
  */
 struct key *key_get_instantiation_authkey(key_serial_t target_id)
 {
+	const struct cred *cred = current_cred();
 	struct key *authkey;
 	key_ref_t authkey_ref;
 
@@ -261,7 +263,7 @@
 		&key_type_request_key_auth,
 		(void *) (unsigned long) target_id,
 		key_get_instantiation_authkey_match,
-		current);
+		cred);
 
 	if (IS_ERR(authkey_ref)) {
 		authkey = ERR_CAST(authkey_ref);
diff --git a/security/root_plug.c b/security/root_plug.c
index c3f68b5..40fb4f1 100644
--- a/security/root_plug.c
+++ b/security/root_plug.c
@@ -55,9 +55,9 @@
 	struct usb_device *dev;
 
 	root_dbg("file %s, e_uid = %d, e_gid = %d\n",
-		 bprm->filename, bprm->e_uid, bprm->e_gid);
+		 bprm->filename, bprm->cred->euid, bprm->cred->egid);
 
-	if (bprm->e_gid == 0) {
+	if (bprm->cred->egid == 0) {
 		dev = usb_find_device(vendor_id, product_id);
 		if (!dev) {
 			root_dbg("e_gid = 0, and device not found, "
@@ -75,15 +75,12 @@
 	.ptrace_may_access =		cap_ptrace_may_access,
 	.ptrace_traceme =		cap_ptrace_traceme,
 	.capget =			cap_capget,
-	.capset_check =			cap_capset_check,
-	.capset_set =			cap_capset_set,
+	.capset =			cap_capset,
 	.capable =			cap_capable,
 
-	.bprm_apply_creds =		cap_bprm_apply_creds,
-	.bprm_set_security =		cap_bprm_set_security,
+	.bprm_set_creds =		cap_bprm_set_creds,
 
-	.task_post_setuid =		cap_task_post_setuid,
-	.task_reparent_to_init =	cap_task_reparent_to_init,
+	.task_fix_setuid =		cap_task_fix_setuid,
 	.task_prctl =			cap_task_prctl,
 
 	.bprm_check_security =		rootplug_bprm_check_security,
diff --git a/security/security.c b/security/security.c
index c0acfa7..f0d96a6 100644
--- a/security/security.c
+++ b/security/security.c
@@ -145,25 +145,23 @@
 	return security_ops->capget(target, effective, inheritable, permitted);
 }
 
-int security_capset_check(struct task_struct *target,
-			   kernel_cap_t *effective,
-			   kernel_cap_t *inheritable,
-			   kernel_cap_t *permitted)
+int security_capset(struct cred *new, const struct cred *old,
+		    const kernel_cap_t *effective,
+		    const kernel_cap_t *inheritable,
+		    const kernel_cap_t *permitted)
 {
-	return security_ops->capset_check(target, effective, inheritable, permitted);
-}
-
-void security_capset_set(struct task_struct *target,
-			  kernel_cap_t *effective,
-			  kernel_cap_t *inheritable,
-			  kernel_cap_t *permitted)
-{
-	security_ops->capset_set(target, effective, inheritable, permitted);
+	return security_ops->capset(new, old,
+				    effective, inheritable, permitted);
 }
 
 int security_capable(struct task_struct *tsk, int cap)
 {
-	return security_ops->capable(tsk, cap);
+	return security_ops->capable(tsk, cap, SECURITY_CAP_AUDIT);
+}
+
+int security_capable_noaudit(struct task_struct *tsk, int cap)
+{
+	return security_ops->capable(tsk, cap, SECURITY_CAP_NOAUDIT);
 }
 
 int security_acct(struct file *file)
@@ -215,29 +213,9 @@
 	return security_ops->vm_enough_memory(current->mm, pages);
 }
 
-int security_bprm_alloc(struct linux_binprm *bprm)
+int security_bprm_set_creds(struct linux_binprm *bprm)
 {
-	return security_ops->bprm_alloc_security(bprm);
-}
-
-void security_bprm_free(struct linux_binprm *bprm)
-{
-	security_ops->bprm_free_security(bprm);
-}
-
-void security_bprm_apply_creds(struct linux_binprm *bprm, int unsafe)
-{
-	security_ops->bprm_apply_creds(bprm, unsafe);
-}
-
-void security_bprm_post_apply_creds(struct linux_binprm *bprm)
-{
-	security_ops->bprm_post_apply_creds(bprm);
-}
-
-int security_bprm_set(struct linux_binprm *bprm)
-{
-	return security_ops->bprm_set_security(bprm);
+	return security_ops->bprm_set_creds(bprm);
 }
 
 int security_bprm_check(struct linux_binprm *bprm)
@@ -245,6 +223,16 @@
 	return security_ops->bprm_check_security(bprm);
 }
 
+void security_bprm_committing_creds(struct linux_binprm *bprm)
+{
+	security_ops->bprm_committing_creds(bprm);
+}
+
+void security_bprm_committed_creds(struct linux_binprm *bprm)
+{
+	security_ops->bprm_committed_creds(bprm);
+}
+
 int security_bprm_secureexec(struct linux_binprm *bprm)
 {
 	return security_ops->bprm_secureexec(bprm);
@@ -603,9 +591,9 @@
 	return security_ops->file_receive(file);
 }
 
-int security_dentry_open(struct file *file)
+int security_dentry_open(struct file *file, const struct cred *cred)
 {
-	return security_ops->dentry_open(file);
+	return security_ops->dentry_open(file, cred);
 }
 
 int security_task_create(unsigned long clone_flags)
@@ -613,14 +601,29 @@
 	return security_ops->task_create(clone_flags);
 }
 
-int security_task_alloc(struct task_struct *p)
+void security_cred_free(struct cred *cred)
 {
-	return security_ops->task_alloc_security(p);
+	security_ops->cred_free(cred);
 }
 
-void security_task_free(struct task_struct *p)
+int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 {
-	security_ops->task_free_security(p);
+	return security_ops->cred_prepare(new, old, gfp);
+}
+
+void security_commit_creds(struct cred *new, const struct cred *old)
+{
+	security_ops->cred_commit(new, old);
+}
+
+int security_kernel_act_as(struct cred *new, u32 secid)
+{
+	return security_ops->kernel_act_as(new, secid);
+}
+
+int security_kernel_create_files_as(struct cred *new, struct inode *inode)
+{
+	return security_ops->kernel_create_files_as(new, inode);
 }
 
 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
@@ -628,10 +631,10 @@
 	return security_ops->task_setuid(id0, id1, id2, flags);
 }
 
-int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
-			       uid_t old_suid, int flags)
+int security_task_fix_setuid(struct cred *new, const struct cred *old,
+			     int flags)
 {
-	return security_ops->task_post_setuid(old_ruid, old_euid, old_suid, flags);
+	return security_ops->task_fix_setuid(new, old, flags);
 }
 
 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
@@ -713,14 +716,9 @@
 }
 
 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
-			 unsigned long arg4, unsigned long arg5, long *rc_p)
+			 unsigned long arg4, unsigned long arg5)
 {
-	return security_ops->task_prctl(option, arg2, arg3, arg4, arg5, rc_p);
-}
-
-void security_task_reparent_to_init(struct task_struct *p)
-{
-	security_ops->task_reparent_to_init(p);
+	return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 }
 
 void security_task_to_inode(struct task_struct *p, struct inode *inode)
@@ -1120,9 +1118,10 @@
 
 #ifdef CONFIG_KEYS
 
-int security_key_alloc(struct key *key, struct task_struct *tsk, unsigned long flags)
+int security_key_alloc(struct key *key, const struct cred *cred,
+		       unsigned long flags)
 {
-	return security_ops->key_alloc(key, tsk, flags);
+	return security_ops->key_alloc(key, cred, flags);
 }
 
 void security_key_free(struct key *key)
@@ -1131,9 +1130,9 @@
 }
 
 int security_key_permission(key_ref_t key_ref,
-			    struct task_struct *context, key_perm_t perm)
+			    const struct cred *cred, key_perm_t perm)
 {
-	return security_ops->key_permission(key_ref, context, perm);
+	return security_ops->key_permission(key_ref, cred, perm);
 }
 
 int security_key_getsecurity(struct key *key, char **_buffer)
diff --git a/security/selinux/exports.c b/security/selinux/exports.c
index 64af2d3..c73aeaa 100644
--- a/security/selinux/exports.c
+++ b/security/selinux/exports.c
@@ -39,9 +39,13 @@
 int selinux_secmark_relabel_packet_permission(u32 sid)
 {
 	if (selinux_enabled) {
-		struct task_security_struct *tsec = current->security;
+		const struct task_security_struct *__tsec;
+		u32 tsid;
 
-		return avc_has_perm(tsec->sid, sid, SECCLASS_PACKET,
+		__tsec = current_security();
+		tsid = __tsec->sid;
+
+		return avc_has_perm(tsid, sid, SECCLASS_PACKET,
 				    PACKET__RELABELTO, NULL);
 	}
 	return 0;
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index f85597a..520f82a 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -156,33 +156,62 @@
 	return (atomic_read(&selinux_secmark_refcount) > 0);
 }
 
-/* Allocate and free functions for each kind of security blob. */
-
-static int task_alloc_security(struct task_struct *task)
+/*
+ * initialise the security for the init task
+ */
+static void cred_init_security(void)
 {
+	struct cred *cred = (struct cred *) current->real_cred;
 	struct task_security_struct *tsec;
 
 	tsec = kzalloc(sizeof(struct task_security_struct), GFP_KERNEL);
 	if (!tsec)
-		return -ENOMEM;
+		panic("SELinux:  Failed to initialize initial task.\n");
 
-	tsec->osid = tsec->sid = SECINITSID_UNLABELED;
-	task->security = tsec;
-
-	return 0;
+	tsec->osid = tsec->sid = SECINITSID_KERNEL;
+	cred->security = tsec;
 }
 
-static void task_free_security(struct task_struct *task)
+/*
+ * get the security ID of a set of credentials
+ */
+static inline u32 cred_sid(const struct cred *cred)
 {
-	struct task_security_struct *tsec = task->security;
-	task->security = NULL;
-	kfree(tsec);
+	const struct task_security_struct *tsec;
+
+	tsec = cred->security;
+	return tsec->sid;
 }
 
+/*
+ * get the objective security ID of a task
+ */
+static inline u32 task_sid(const struct task_struct *task)
+{
+	u32 sid;
+
+	rcu_read_lock();
+	sid = cred_sid(__task_cred(task));
+	rcu_read_unlock();
+	return sid;
+}
+
+/*
+ * get the subjective security ID of the current task
+ */
+static inline u32 current_sid(void)
+{
+	const struct task_security_struct *tsec = current_cred()->security;
+
+	return tsec->sid;
+}
+
+/* Allocate and free functions for each kind of security blob. */
+
 static int inode_alloc_security(struct inode *inode)
 {
-	struct task_security_struct *tsec = current->security;
 	struct inode_security_struct *isec;
+	u32 sid = current_sid();
 
 	isec = kmem_cache_zalloc(sel_inode_cache, GFP_NOFS);
 	if (!isec)
@@ -193,7 +222,7 @@
 	isec->inode = inode;
 	isec->sid = SECINITSID_UNLABELED;
 	isec->sclass = SECCLASS_FILE;
-	isec->task_sid = tsec->sid;
+	isec->task_sid = sid;
 	inode->i_security = isec;
 
 	return 0;
@@ -215,15 +244,15 @@
 
 static int file_alloc_security(struct file *file)
 {
-	struct task_security_struct *tsec = current->security;
 	struct file_security_struct *fsec;
+	u32 sid = current_sid();
 
 	fsec = kzalloc(sizeof(struct file_security_struct), GFP_KERNEL);
 	if (!fsec)
 		return -ENOMEM;
 
-	fsec->sid = tsec->sid;
-	fsec->fown_sid = tsec->sid;
+	fsec->sid = sid;
+	fsec->fown_sid = sid;
 	file->f_security = fsec;
 
 	return 0;
@@ -338,8 +367,9 @@
 
 static int may_context_mount_sb_relabel(u32 sid,
 			struct superblock_security_struct *sbsec,
-			struct task_security_struct *tsec)
+			const struct cred *cred)
 {
+	const struct task_security_struct *tsec = cred->security;
 	int rc;
 
 	rc = avc_has_perm(tsec->sid, sbsec->sid, SECCLASS_FILESYSTEM,
@@ -354,8 +384,9 @@
 
 static int may_context_mount_inode_relabel(u32 sid,
 			struct superblock_security_struct *sbsec,
-			struct task_security_struct *tsec)
+			const struct cred *cred)
 {
+	const struct task_security_struct *tsec = cred->security;
 	int rc;
 	rc = avc_has_perm(tsec->sid, sbsec->sid, SECCLASS_FILESYSTEM,
 			  FILESYSTEM__RELABELFROM, NULL);
@@ -553,8 +584,8 @@
 static int selinux_set_mnt_opts(struct super_block *sb,
 				struct security_mnt_opts *opts)
 {
+	const struct cred *cred = current_cred();
 	int rc = 0, i;
-	struct task_security_struct *tsec = current->security;
 	struct superblock_security_struct *sbsec = sb->s_security;
 	const char *name = sb->s_type->name;
 	struct inode *inode = sbsec->sb->s_root->d_inode;
@@ -680,8 +711,7 @@
 
 	/* sets the context of the superblock for the fs being mounted. */
 	if (fscontext_sid) {
-
-		rc = may_context_mount_sb_relabel(fscontext_sid, sbsec, tsec);
+		rc = may_context_mount_sb_relabel(fscontext_sid, sbsec, cred);
 		if (rc)
 			goto out;
 
@@ -695,12 +725,14 @@
 	 */
 	if (context_sid) {
 		if (!fscontext_sid) {
-			rc = may_context_mount_sb_relabel(context_sid, sbsec, tsec);
+			rc = may_context_mount_sb_relabel(context_sid, sbsec,
+							  cred);
 			if (rc)
 				goto out;
 			sbsec->sid = context_sid;
 		} else {
-			rc = may_context_mount_inode_relabel(context_sid, sbsec, tsec);
+			rc = may_context_mount_inode_relabel(context_sid, sbsec,
+							     cred);
 			if (rc)
 				goto out;
 		}
@@ -712,7 +744,8 @@
 	}
 
 	if (rootcontext_sid) {
-		rc = may_context_mount_inode_relabel(rootcontext_sid, sbsec, tsec);
+		rc = may_context_mount_inode_relabel(rootcontext_sid, sbsec,
+						     cred);
 		if (rc)
 			goto out;
 
@@ -730,7 +763,7 @@
 
 		if (defcontext_sid != sbsec->def_sid) {
 			rc = may_context_mount_inode_relabel(defcontext_sid,
-							     sbsec, tsec);
+							     sbsec, cred);
 			if (rc)
 				goto out;
 		}
@@ -1345,18 +1378,53 @@
 	return perm;
 }
 
-/* Check permission betweeen a pair of tasks, e.g. signal checks,
-   fork check, ptrace check, etc. */
-static int task_has_perm(struct task_struct *tsk1,
-			 struct task_struct *tsk2,
+/*
+ * Check permission between a pair of credentials
+ * fork check, ptrace check, etc.
+ */
+static int cred_has_perm(const struct cred *actor,
+			 const struct cred *target,
 			 u32 perms)
 {
-	struct task_security_struct *tsec1, *tsec2;
+	u32 asid = cred_sid(actor), tsid = cred_sid(target);
 
-	tsec1 = tsk1->security;
-	tsec2 = tsk2->security;
-	return avc_has_perm(tsec1->sid, tsec2->sid,
-			    SECCLASS_PROCESS, perms, NULL);
+	return avc_has_perm(asid, tsid, SECCLASS_PROCESS, perms, NULL);
+}
+
+/*
+ * Check permission between a pair of tasks, e.g. signal checks,
+ * fork check, ptrace check, etc.
+ * tsk1 is the actor and tsk2 is the target
+ * - this uses the default subjective creds of tsk1
+ */
+static int task_has_perm(const struct task_struct *tsk1,
+			 const struct task_struct *tsk2,
+			 u32 perms)
+{
+	const struct task_security_struct *__tsec1, *__tsec2;
+	u32 sid1, sid2;
+
+	rcu_read_lock();
+	__tsec1 = __task_cred(tsk1)->security;	sid1 = __tsec1->sid;
+	__tsec2 = __task_cred(tsk2)->security;	sid2 = __tsec2->sid;
+	rcu_read_unlock();
+	return avc_has_perm(sid1, sid2, SECCLASS_PROCESS, perms, NULL);
+}
+
+/*
+ * Check permission between current and another task, e.g. signal checks,
+ * fork check, ptrace check, etc.
+ * current is the actor and tsk2 is the target
+ * - this uses current's subjective creds
+ */
+static int current_has_perm(const struct task_struct *tsk,
+			    u32 perms)
+{
+	u32 sid, tsid;
+
+	sid = current_sid();
+	tsid = task_sid(tsk);
+	return avc_has_perm(sid, tsid, SECCLASS_PROCESS, perms, NULL);
 }
 
 #if CAP_LAST_CAP > 63
@@ -1365,14 +1433,14 @@
 
 /* Check whether a task is allowed to use a capability. */
 static int task_has_capability(struct task_struct *tsk,
-			       int cap)
+			       int cap, int audit)
 {
-	struct task_security_struct *tsec;
 	struct avc_audit_data ad;
+	struct av_decision avd;
 	u16 sclass;
+	u32 sid = task_sid(tsk);
 	u32 av = CAP_TO_MASK(cap);
-
-	tsec = tsk->security;
+	int rc;
 
 	AVC_AUDIT_DATA_INIT(&ad, CAP);
 	ad.tsk = tsk;
@@ -1390,37 +1458,39 @@
 		       "SELinux:  out of range capability %d\n", cap);
 		BUG();
 	}
-	return avc_has_perm(tsec->sid, tsec->sid, sclass, av, &ad);
+
+	rc = avc_has_perm_noaudit(sid, sid, sclass, av, 0, &avd);
+	if (audit == SECURITY_CAP_AUDIT)
+		avc_audit(sid, sid, sclass, av, &avd, rc, &ad);
+	return rc;
 }
 
 /* Check whether a task is allowed to use a system operation. */
 static int task_has_system(struct task_struct *tsk,
 			   u32 perms)
 {
-	struct task_security_struct *tsec;
+	u32 sid = task_sid(tsk);
 
-	tsec = tsk->security;
-
-	return avc_has_perm(tsec->sid, SECINITSID_KERNEL,
+	return avc_has_perm(sid, SECINITSID_KERNEL,
 			    SECCLASS_SYSTEM, perms, NULL);
 }
 
 /* Check whether a task has a particular permission to an inode.
    The 'adp' parameter is optional and allows other audit
    data to be passed (e.g. the dentry). */
-static int inode_has_perm(struct task_struct *tsk,
+static int inode_has_perm(const struct cred *cred,
 			  struct inode *inode,
 			  u32 perms,
 			  struct avc_audit_data *adp)
 {
-	struct task_security_struct *tsec;
 	struct inode_security_struct *isec;
 	struct avc_audit_data ad;
+	u32 sid;
 
 	if (unlikely(IS_PRIVATE(inode)))
 		return 0;
 
-	tsec = tsk->security;
+	sid = cred_sid(cred);
 	isec = inode->i_security;
 
 	if (!adp) {
@@ -1429,23 +1499,24 @@
 		ad.u.fs.inode = inode;
 	}
 
-	return avc_has_perm(tsec->sid, isec->sid, isec->sclass, perms, adp);
+	return avc_has_perm(sid, isec->sid, isec->sclass, perms, adp);
 }
 
 /* Same as inode_has_perm, but pass explicit audit data containing
    the dentry to help the auditing code to more easily generate the
    pathname if needed. */
-static inline int dentry_has_perm(struct task_struct *tsk,
+static inline int dentry_has_perm(const struct cred *cred,
 				  struct vfsmount *mnt,
 				  struct dentry *dentry,
 				  u32 av)
 {
 	struct inode *inode = dentry->d_inode;
 	struct avc_audit_data ad;
+
 	AVC_AUDIT_DATA_INIT(&ad, FS);
 	ad.u.fs.path.mnt = mnt;
 	ad.u.fs.path.dentry = dentry;
-	return inode_has_perm(tsk, inode, av, &ad);
+	return inode_has_perm(cred, inode, av, &ad);
 }
 
 /* Check whether a task can use an open file descriptor to
@@ -1456,33 +1527,35 @@
    has the same SID as the process.  If av is zero, then
    access to the file is not checked, e.g. for cases
    where only the descriptor is affected like seek. */
-static int file_has_perm(struct task_struct *tsk,
-				struct file *file,
-				u32 av)
+static int file_has_perm(const struct cred *cred,
+			 struct file *file,
+			 u32 av)
 {
-	struct task_security_struct *tsec = tsk->security;
 	struct file_security_struct *fsec = file->f_security;
 	struct inode *inode = file->f_path.dentry->d_inode;
 	struct avc_audit_data ad;
+	u32 sid = cred_sid(cred);
 	int rc;
 
 	AVC_AUDIT_DATA_INIT(&ad, FS);
 	ad.u.fs.path = file->f_path;
 
-	if (tsec->sid != fsec->sid) {
-		rc = avc_has_perm(tsec->sid, fsec->sid,
+	if (sid != fsec->sid) {
+		rc = avc_has_perm(sid, fsec->sid,
 				  SECCLASS_FD,
 				  FD__USE,
 				  &ad);
 		if (rc)
-			return rc;
+			goto out;
 	}
 
 	/* av is zero if only checking access to the descriptor. */
+	rc = 0;
 	if (av)
-		return inode_has_perm(tsk, inode, av, &ad);
+		rc = inode_has_perm(cred, inode, av, &ad);
 
-	return 0;
+out:
+	return rc;
 }
 
 /* Check whether a task can create a file. */
@@ -1490,36 +1563,36 @@
 		      struct dentry *dentry,
 		      u16 tclass)
 {
-	struct task_security_struct *tsec;
+	const struct cred *cred = current_cred();
+	const struct task_security_struct *tsec = cred->security;
 	struct inode_security_struct *dsec;
 	struct superblock_security_struct *sbsec;
-	u32 newsid;
+	u32 sid, newsid;
 	struct avc_audit_data ad;
 	int rc;
 
-	tsec = current->security;
 	dsec = dir->i_security;
 	sbsec = dir->i_sb->s_security;
 
+	sid = tsec->sid;
+	newsid = tsec->create_sid;
+
 	AVC_AUDIT_DATA_INIT(&ad, FS);
 	ad.u.fs.path.dentry = dentry;
 
-	rc = avc_has_perm(tsec->sid, dsec->sid, SECCLASS_DIR,
+	rc = avc_has_perm(sid, dsec->sid, SECCLASS_DIR,
 			  DIR__ADD_NAME | DIR__SEARCH,
 			  &ad);
 	if (rc)
 		return rc;
 
-	if (tsec->create_sid && sbsec->behavior != SECURITY_FS_USE_MNTPOINT) {
-		newsid = tsec->create_sid;
-	} else {
-		rc = security_transition_sid(tsec->sid, dsec->sid, tclass,
-					     &newsid);
+	if (!newsid || sbsec->behavior == SECURITY_FS_USE_MNTPOINT) {
+		rc = security_transition_sid(sid, dsec->sid, tclass, &newsid);
 		if (rc)
 			return rc;
 	}
 
-	rc = avc_has_perm(tsec->sid, newsid, tclass, FILE__CREATE, &ad);
+	rc = avc_has_perm(sid, newsid, tclass, FILE__CREATE, &ad);
 	if (rc)
 		return rc;
 
@@ -1532,11 +1605,9 @@
 static int may_create_key(u32 ksid,
 			  struct task_struct *ctx)
 {
-	struct task_security_struct *tsec;
+	u32 sid = task_sid(ctx);
 
-	tsec = ctx->security;
-
-	return avc_has_perm(tsec->sid, ksid, SECCLASS_KEY, KEY__CREATE, NULL);
+	return avc_has_perm(sid, ksid, SECCLASS_KEY, KEY__CREATE, NULL);
 }
 
 #define MAY_LINK	0
@@ -1549,13 +1620,12 @@
 		    int kind)
 
 {
-	struct task_security_struct *tsec;
 	struct inode_security_struct *dsec, *isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 	u32 av;
 	int rc;
 
-	tsec = current->security;
 	dsec = dir->i_security;
 	isec = dentry->d_inode->i_security;
 
@@ -1564,7 +1634,7 @@
 
 	av = DIR__SEARCH;
 	av |= (kind ? DIR__REMOVE_NAME : DIR__ADD_NAME);
-	rc = avc_has_perm(tsec->sid, dsec->sid, SECCLASS_DIR, av, &ad);
+	rc = avc_has_perm(sid, dsec->sid, SECCLASS_DIR, av, &ad);
 	if (rc)
 		return rc;
 
@@ -1584,7 +1654,7 @@
 		return 0;
 	}
 
-	rc = avc_has_perm(tsec->sid, isec->sid, isec->sclass, av, &ad);
+	rc = avc_has_perm(sid, isec->sid, isec->sclass, av, &ad);
 	return rc;
 }
 
@@ -1593,14 +1663,13 @@
 			     struct inode *new_dir,
 			     struct dentry *new_dentry)
 {
-	struct task_security_struct *tsec;
 	struct inode_security_struct *old_dsec, *new_dsec, *old_isec, *new_isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 	u32 av;
 	int old_is_dir, new_is_dir;
 	int rc;
 
-	tsec = current->security;
 	old_dsec = old_dir->i_security;
 	old_isec = old_dentry->d_inode->i_security;
 	old_is_dir = S_ISDIR(old_dentry->d_inode->i_mode);
@@ -1609,16 +1678,16 @@
 	AVC_AUDIT_DATA_INIT(&ad, FS);
 
 	ad.u.fs.path.dentry = old_dentry;
-	rc = avc_has_perm(tsec->sid, old_dsec->sid, SECCLASS_DIR,
+	rc = avc_has_perm(sid, old_dsec->sid, SECCLASS_DIR,
 			  DIR__REMOVE_NAME | DIR__SEARCH, &ad);
 	if (rc)
 		return rc;
-	rc = avc_has_perm(tsec->sid, old_isec->sid,
+	rc = avc_has_perm(sid, old_isec->sid,
 			  old_isec->sclass, FILE__RENAME, &ad);
 	if (rc)
 		return rc;
 	if (old_is_dir && new_dir != old_dir) {
-		rc = avc_has_perm(tsec->sid, old_isec->sid,
+		rc = avc_has_perm(sid, old_isec->sid,
 				  old_isec->sclass, DIR__REPARENT, &ad);
 		if (rc)
 			return rc;
@@ -1628,13 +1697,13 @@
 	av = DIR__ADD_NAME | DIR__SEARCH;
 	if (new_dentry->d_inode)
 		av |= DIR__REMOVE_NAME;
-	rc = avc_has_perm(tsec->sid, new_dsec->sid, SECCLASS_DIR, av, &ad);
+	rc = avc_has_perm(sid, new_dsec->sid, SECCLASS_DIR, av, &ad);
 	if (rc)
 		return rc;
 	if (new_dentry->d_inode) {
 		new_isec = new_dentry->d_inode->i_security;
 		new_is_dir = S_ISDIR(new_dentry->d_inode->i_mode);
-		rc = avc_has_perm(tsec->sid, new_isec->sid,
+		rc = avc_has_perm(sid, new_isec->sid,
 				  new_isec->sclass,
 				  (new_is_dir ? DIR__RMDIR : FILE__UNLINK), &ad);
 		if (rc)
@@ -1645,18 +1714,16 @@
 }
 
 /* Check whether a task can perform a filesystem operation. */
-static int superblock_has_perm(struct task_struct *tsk,
+static int superblock_has_perm(const struct cred *cred,
 			       struct super_block *sb,
 			       u32 perms,
 			       struct avc_audit_data *ad)
 {
-	struct task_security_struct *tsec;
 	struct superblock_security_struct *sbsec;
+	u32 sid = cred_sid(cred);
 
-	tsec = tsk->security;
 	sbsec = sb->s_security;
-	return avc_has_perm(tsec->sid, sbsec->sid, SECCLASS_FILESYSTEM,
-			    perms, ad);
+	return avc_has_perm(sid, sbsec->sid, SECCLASS_FILESYSTEM, perms, ad);
 }
 
 /* Convert a Linux mode and permission mask to an access vector. */
@@ -1687,35 +1754,6 @@
 	return av;
 }
 
-/*
- * Convert a file mask to an access vector and include the correct open
- * open permission.
- */
-static inline u32 open_file_mask_to_av(int mode, int mask)
-{
-	u32 av = file_mask_to_av(mode, mask);
-
-	if (selinux_policycap_openperm) {
-		/*
-		 * lnk files and socks do not really have an 'open'
-		 */
-		if (S_ISREG(mode))
-			av |= FILE__OPEN;
-		else if (S_ISCHR(mode))
-			av |= CHR_FILE__OPEN;
-		else if (S_ISBLK(mode))
-			av |= BLK_FILE__OPEN;
-		else if (S_ISFIFO(mode))
-			av |= FIFO_FILE__OPEN;
-		else if (S_ISDIR(mode))
-			av |= DIR__OPEN;
-		else
-			printk(KERN_ERR "SELinux: WARNING: inside %s with "
-				"unknown mode:%x\n", __func__, mode);
-	}
-	return av;
-}
-
 /* Convert a Linux file to an access vector. */
 static inline u32 file_to_av(struct file *file)
 {
@@ -1739,6 +1777,36 @@
 	return av;
 }
 
+/*
+ * Convert a file to an access vector and include the correct open
+ * open permission.
+ */
+static inline u32 open_file_to_av(struct file *file)
+{
+	u32 av = file_to_av(file);
+
+	if (selinux_policycap_openperm) {
+		mode_t mode = file->f_path.dentry->d_inode->i_mode;
+		/*
+		 * lnk files and socks do not really have an 'open'
+		 */
+		if (S_ISREG(mode))
+			av |= FILE__OPEN;
+		else if (S_ISCHR(mode))
+			av |= CHR_FILE__OPEN;
+		else if (S_ISBLK(mode))
+			av |= BLK_FILE__OPEN;
+		else if (S_ISFIFO(mode))
+			av |= FIFO_FILE__OPEN;
+		else if (S_ISDIR(mode))
+			av |= DIR__OPEN;
+		else
+			printk(KERN_ERR "SELinux: WARNING: inside %s with "
+				"unknown mode:%o\n", __func__, mode);
+	}
+	return av;
+}
+
 /* Hook functions begin here. */
 
 static int selinux_ptrace_may_access(struct task_struct *child,
@@ -1751,13 +1819,12 @@
 		return rc;
 
 	if (mode == PTRACE_MODE_READ) {
-		struct task_security_struct *tsec = current->security;
-		struct task_security_struct *csec = child->security;
-		return avc_has_perm(tsec->sid, csec->sid,
-				    SECCLASS_FILE, FILE__READ, NULL);
+		u32 sid = current_sid();
+		u32 csid = task_sid(child);
+		return avc_has_perm(sid, csid, SECCLASS_FILE, FILE__READ, NULL);
 	}
 
-	return task_has_perm(current, child, PROCESS__PTRACE);
+	return current_has_perm(child, PROCESS__PTRACE);
 }
 
 static int selinux_ptrace_traceme(struct task_struct *parent)
@@ -1776,40 +1843,37 @@
 {
 	int error;
 
-	error = task_has_perm(current, target, PROCESS__GETCAP);
+	error = current_has_perm(target, PROCESS__GETCAP);
 	if (error)
 		return error;
 
 	return secondary_ops->capget(target, effective, inheritable, permitted);
 }
 
-static int selinux_capset_check(struct task_struct *target, kernel_cap_t *effective,
-				kernel_cap_t *inheritable, kernel_cap_t *permitted)
+static int selinux_capset(struct cred *new, const struct cred *old,
+			  const kernel_cap_t *effective,
+			  const kernel_cap_t *inheritable,
+			  const kernel_cap_t *permitted)
 {
 	int error;
 
-	error = secondary_ops->capset_check(target, effective, inheritable, permitted);
+	error = secondary_ops->capset(new, old,
+				      effective, inheritable, permitted);
 	if (error)
 		return error;
 
-	return task_has_perm(current, target, PROCESS__SETCAP);
+	return cred_has_perm(old, new, PROCESS__SETCAP);
 }
 
-static void selinux_capset_set(struct task_struct *target, kernel_cap_t *effective,
-			       kernel_cap_t *inheritable, kernel_cap_t *permitted)
-{
-	secondary_ops->capset_set(target, effective, inheritable, permitted);
-}
-
-static int selinux_capable(struct task_struct *tsk, int cap)
+static int selinux_capable(struct task_struct *tsk, int cap, int audit)
 {
 	int rc;
 
-	rc = secondary_ops->capable(tsk, cap);
+	rc = secondary_ops->capable(tsk, cap, audit);
 	if (rc)
 		return rc;
 
-	return task_has_capability(tsk, cap);
+	return task_has_capability(tsk, cap, audit);
 }
 
 static int selinux_sysctl_get_sid(ctl_table *table, u16 tclass, u32 *sid)
@@ -1857,15 +1921,14 @@
 {
 	int error = 0;
 	u32 av;
-	struct task_security_struct *tsec;
-	u32 tsid;
+	u32 tsid, sid;
 	int rc;
 
 	rc = secondary_ops->sysctl(table, op);
 	if (rc)
 		return rc;
 
-	tsec = current->security;
+	sid = current_sid();
 
 	rc = selinux_sysctl_get_sid(table, (op == 0001) ?
 				    SECCLASS_DIR : SECCLASS_FILE, &tsid);
@@ -1877,7 +1940,7 @@
 	/* The op values are "defined" in sysctl.c, thereby creating
 	 * a bad coupling between this module and sysctl.c */
 	if (op == 001) {
-		error = avc_has_perm(tsec->sid, tsid,
+		error = avc_has_perm(sid, tsid,
 				     SECCLASS_DIR, DIR__SEARCH, NULL);
 	} else {
 		av = 0;
@@ -1886,7 +1949,7 @@
 		if (op & 002)
 			av |= FILE__WRITE;
 		if (av)
-			error = avc_has_perm(tsec->sid, tsid,
+			error = avc_has_perm(sid, tsid,
 					     SECCLASS_FILE, av, NULL);
 	}
 
@@ -1895,6 +1958,7 @@
 
 static int selinux_quotactl(int cmds, int type, int id, struct super_block *sb)
 {
+	const struct cred *cred = current_cred();
 	int rc = 0;
 
 	if (!sb)
@@ -1906,14 +1970,12 @@
 	case Q_QUOTAOFF:
 	case Q_SETINFO:
 	case Q_SETQUOTA:
-		rc = superblock_has_perm(current, sb, FILESYSTEM__QUOTAMOD,
-					 NULL);
+		rc = superblock_has_perm(cred, sb, FILESYSTEM__QUOTAMOD, NULL);
 		break;
 	case Q_GETFMT:
 	case Q_GETINFO:
 	case Q_GETQUOTA:
-		rc = superblock_has_perm(current, sb, FILESYSTEM__QUOTAGET,
-					 NULL);
+		rc = superblock_has_perm(cred, sb, FILESYSTEM__QUOTAGET, NULL);
 		break;
 	default:
 		rc = 0;  /* let the kernel handle invalid cmds */
@@ -1924,7 +1986,9 @@
 
 static int selinux_quota_on(struct dentry *dentry)
 {
-	return dentry_has_perm(current, NULL, dentry, FILE__QUOTAON);
+	const struct cred *cred = current_cred();
+
+	return dentry_has_perm(cred, NULL, dentry, FILE__QUOTAON);
 }
 
 static int selinux_syslog(int type)
@@ -1972,16 +2036,8 @@
 static int selinux_vm_enough_memory(struct mm_struct *mm, long pages)
 {
 	int rc, cap_sys_admin = 0;
-	struct task_security_struct *tsec = current->security;
 
-	rc = secondary_ops->capable(current, CAP_SYS_ADMIN);
-	if (rc == 0)
-		rc = avc_has_perm_noaudit(tsec->sid, tsec->sid,
-					  SECCLASS_CAPABILITY,
-					  CAP_TO_MASK(CAP_SYS_ADMIN),
-					  0,
-					  NULL);
-
+	rc = selinux_capable(current, CAP_SYS_ADMIN, SECURITY_CAP_NOAUDIT);
 	if (rc == 0)
 		cap_sys_admin = 1;
 
@@ -1990,59 +2046,45 @@
 
 /* binprm security operations */
 
-static int selinux_bprm_alloc_security(struct linux_binprm *bprm)
+static int selinux_bprm_set_creds(struct linux_binprm *bprm)
 {
-	struct bprm_security_struct *bsec;
-
-	bsec = kzalloc(sizeof(struct bprm_security_struct), GFP_KERNEL);
-	if (!bsec)
-		return -ENOMEM;
-
-	bsec->sid = SECINITSID_UNLABELED;
-	bsec->set = 0;
-
-	bprm->security = bsec;
-	return 0;
-}
-
-static int selinux_bprm_set_security(struct linux_binprm *bprm)
-{
-	struct task_security_struct *tsec;
-	struct inode *inode = bprm->file->f_path.dentry->d_inode;
+	const struct task_security_struct *old_tsec;
+	struct task_security_struct *new_tsec;
 	struct inode_security_struct *isec;
-	struct bprm_security_struct *bsec;
-	u32 newsid;
 	struct avc_audit_data ad;
+	struct inode *inode = bprm->file->f_path.dentry->d_inode;
 	int rc;
 
-	rc = secondary_ops->bprm_set_security(bprm);
+	rc = secondary_ops->bprm_set_creds(bprm);
 	if (rc)
 		return rc;
 
-	bsec = bprm->security;
-
-	if (bsec->set)
+	/* SELinux context only depends on initial program or script and not
+	 * the script interpreter */
+	if (bprm->cred_prepared)
 		return 0;
 
-	tsec = current->security;
+	old_tsec = current_security();
+	new_tsec = bprm->cred->security;
 	isec = inode->i_security;
 
 	/* Default to the current task SID. */
-	bsec->sid = tsec->sid;
+	new_tsec->sid = old_tsec->sid;
+	new_tsec->osid = old_tsec->sid;
 
 	/* Reset fs, key, and sock SIDs on execve. */
-	tsec->create_sid = 0;
-	tsec->keycreate_sid = 0;
-	tsec->sockcreate_sid = 0;
+	new_tsec->create_sid = 0;
+	new_tsec->keycreate_sid = 0;
+	new_tsec->sockcreate_sid = 0;
 
-	if (tsec->exec_sid) {
-		newsid = tsec->exec_sid;
+	if (old_tsec->exec_sid) {
+		new_tsec->sid = old_tsec->exec_sid;
 		/* Reset exec SID on execve. */
-		tsec->exec_sid = 0;
+		new_tsec->exec_sid = 0;
 	} else {
 		/* Check for a default transition on this program. */
-		rc = security_transition_sid(tsec->sid, isec->sid,
-					     SECCLASS_PROCESS, &newsid);
+		rc = security_transition_sid(old_tsec->sid, isec->sid,
+					     SECCLASS_PROCESS, &new_tsec->sid);
 		if (rc)
 			return rc;
 	}
@@ -2051,33 +2093,63 @@
 	ad.u.fs.path = bprm->file->f_path;
 
 	if (bprm->file->f_path.mnt->mnt_flags & MNT_NOSUID)
-		newsid = tsec->sid;
+		new_tsec->sid = old_tsec->sid;
 
-	if (tsec->sid == newsid) {
-		rc = avc_has_perm(tsec->sid, isec->sid,
+	if (new_tsec->sid == old_tsec->sid) {
+		rc = avc_has_perm(old_tsec->sid, isec->sid,
 				  SECCLASS_FILE, FILE__EXECUTE_NO_TRANS, &ad);
 		if (rc)
 			return rc;
 	} else {
 		/* Check permissions for the transition. */
-		rc = avc_has_perm(tsec->sid, newsid,
+		rc = avc_has_perm(old_tsec->sid, new_tsec->sid,
 				  SECCLASS_PROCESS, PROCESS__TRANSITION, &ad);
 		if (rc)
 			return rc;
 
-		rc = avc_has_perm(newsid, isec->sid,
+		rc = avc_has_perm(new_tsec->sid, isec->sid,
 				  SECCLASS_FILE, FILE__ENTRYPOINT, &ad);
 		if (rc)
 			return rc;
 
-		/* Clear any possibly unsafe personality bits on exec: */
-		current->personality &= ~PER_CLEAR_ON_SETID;
+		/* Check for shared state */
+		if (bprm->unsafe & LSM_UNSAFE_SHARE) {
+			rc = avc_has_perm(old_tsec->sid, new_tsec->sid,
+					  SECCLASS_PROCESS, PROCESS__SHARE,
+					  NULL);
+			if (rc)
+				return -EPERM;
+		}
 
-		/* Set the security field to the new SID. */
-		bsec->sid = newsid;
+		/* Make sure that anyone attempting to ptrace over a task that
+		 * changes its SID has the appropriate permit */
+		if (bprm->unsafe &
+		    (LSM_UNSAFE_PTRACE | LSM_UNSAFE_PTRACE_CAP)) {
+			struct task_struct *tracer;
+			struct task_security_struct *sec;
+			u32 ptsid = 0;
+
+			rcu_read_lock();
+			tracer = tracehook_tracer_task(current);
+			if (likely(tracer != NULL)) {
+				sec = __task_cred(tracer)->security;
+				ptsid = sec->sid;
+			}
+			rcu_read_unlock();
+
+			if (ptsid != 0) {
+				rc = avc_has_perm(ptsid, new_tsec->sid,
+						  SECCLASS_PROCESS,
+						  PROCESS__PTRACE, NULL);
+				if (rc)
+					return -EPERM;
+			}
+		}
+
+		/* Clear any possibly unsafe personality bits on exec: */
+		bprm->per_clear |= PER_CLEAR_ON_SETID;
 	}
 
-	bsec->set = 1;
 	return 0;
 }
 
@@ -2086,35 +2158,34 @@
 	return secondary_ops->bprm_check_security(bprm);
 }
 
-
 static int selinux_bprm_secureexec(struct linux_binprm *bprm)
 {
-	struct task_security_struct *tsec = current->security;
+	const struct cred *cred = current_cred();
+	const struct task_security_struct *tsec = cred->security;
+	u32 sid, osid;
 	int atsecure = 0;
 
-	if (tsec->osid != tsec->sid) {
+	sid = tsec->sid;
+	osid = tsec->osid;
+
+	if (osid != sid) {
 		/* Enable secure mode for SIDs transitions unless
 		   the noatsecure permission is granted between
 		   the two SIDs, i.e. ahp returns 0. */
-		atsecure = avc_has_perm(tsec->osid, tsec->sid,
-					 SECCLASS_PROCESS,
-					 PROCESS__NOATSECURE, NULL);
+		atsecure = avc_has_perm(osid, sid,
+					SECCLASS_PROCESS,
+					PROCESS__NOATSECURE, NULL);
 	}
 
 	return (atsecure || secondary_ops->bprm_secureexec(bprm));
 }
 
-static void selinux_bprm_free_security(struct linux_binprm *bprm)
-{
-	kfree(bprm->security);
-	bprm->security = NULL;
-}
-
 extern struct vfsmount *selinuxfs_mount;
 extern struct dentry *selinux_null;
 
 /* Derived from fs/exec.c:flush_old_files. */
-static inline void flush_unauthorized_files(struct files_struct *files)
+static inline void flush_unauthorized_files(const struct cred *cred,
+					    struct files_struct *files)
 {
 	struct avc_audit_data ad;
 	struct file *file, *devnull = NULL;
@@ -2136,7 +2207,7 @@
 			   interested in the inode-based check here. */
 			file = list_first_entry(&tty->tty_files, struct file, f_u.fu_list);
 			inode = file->f_path.dentry->d_inode;
-			if (inode_has_perm(current, inode,
+			if (inode_has_perm(cred, inode,
 					   FILE__READ | FILE__WRITE, NULL)) {
 				drop_tty = 1;
 			}
@@ -2171,7 +2242,7 @@
 				file = fget(i);
 				if (!file)
 					continue;
-				if (file_has_perm(current,
+				if (file_has_perm(cred,
 						  file,
 						  file_to_av(file))) {
 					sys_close(i);
@@ -2185,7 +2256,10 @@
 					if (devnull) {
 						get_file(devnull);
 					} else {
-						devnull = dentry_open(dget(selinux_null), mntget(selinuxfs_mount), O_RDWR);
+						devnull = dentry_open(
+							dget(selinux_null),
+							mntget(selinuxfs_mount),
+							O_RDWR, cred);
 						if (IS_ERR(devnull)) {
 							devnull = NULL;
 							put_unused_fd(fd);
@@ -2204,94 +2278,78 @@
 	spin_unlock(&files->file_lock);
 }
 
-static void selinux_bprm_apply_creds(struct linux_binprm *bprm, int unsafe)
+/*
+ * Prepare a process for imminent new credential changes due to exec
+ */
+static void selinux_bprm_committing_creds(struct linux_binprm *bprm)
 {
-	struct task_security_struct *tsec;
-	struct bprm_security_struct *bsec;
-	u32 sid;
-	int rc;
+	struct task_security_struct *new_tsec;
+	struct rlimit *rlim, *initrlim;
+	int rc, i;
 
-	secondary_ops->bprm_apply_creds(bprm, unsafe);
+	secondary_ops->bprm_committing_creds(bprm);
 
-	tsec = current->security;
+	new_tsec = bprm->cred->security;
+	if (new_tsec->sid == new_tsec->osid)
+		return;
 
-	bsec = bprm->security;
-	sid = bsec->sid;
+	/* Close files for which the new task SID is not authorized. */
+	flush_unauthorized_files(bprm->cred, current->files);
 
-	tsec->osid = tsec->sid;
-	bsec->unsafe = 0;
-	if (tsec->sid != sid) {
-		/* Check for shared state.  If not ok, leave SID
-		   unchanged and kill. */
-		if (unsafe & LSM_UNSAFE_SHARE) {
-			rc = avc_has_perm(tsec->sid, sid, SECCLASS_PROCESS,
-					PROCESS__SHARE, NULL);
-			if (rc) {
-				bsec->unsafe = 1;
-				return;
-			}
+	/* Always clear parent death signal on SID transitions. */
+	current->pdeath_signal = 0;
+
+	/* Check whether the new SID can inherit resource limits from the old
+	 * SID.  If not, reset all soft limits to the lower of the current
+	 * task's hard limit and the init task's soft limit.
+	 *
+	 * Note that the setting of hard limits (even to lower them) can be
+	 * controlled by the setrlimit check.  The inclusion of the init task's
+	 * soft limit into the computation is to avoid resetting soft limits
+	 * higher than the default soft limit for cases where the default is
+	 * lower than the hard limit, e.g. RLIMIT_CORE or RLIMIT_STACK.
+	 */
+	rc = avc_has_perm(new_tsec->osid, new_tsec->sid, SECCLASS_PROCESS,
+			  PROCESS__RLIMITINH, NULL);
+	if (rc) {
+		for (i = 0; i < RLIM_NLIMITS; i++) {
+			rlim = current->signal->rlim + i;
+			initrlim = init_task.signal->rlim + i;
+			rlim->rlim_cur = min(rlim->rlim_max, initrlim->rlim_cur);
 		}
-
-		/* Check for ptracing, and update the task SID if ok.
-		   Otherwise, leave SID unchanged and kill. */
-		if (unsafe & (LSM_UNSAFE_PTRACE | LSM_UNSAFE_PTRACE_CAP)) {
-			struct task_struct *tracer;
-			struct task_security_struct *sec;
-			u32 ptsid = 0;
-
-			rcu_read_lock();
-			tracer = tracehook_tracer_task(current);
-			if (likely(tracer != NULL)) {
-				sec = tracer->security;
-				ptsid = sec->sid;
-			}
-			rcu_read_unlock();
-
-			if (ptsid != 0) {
-				rc = avc_has_perm(ptsid, sid, SECCLASS_PROCESS,
-						  PROCESS__PTRACE, NULL);
-				if (rc) {
-					bsec->unsafe = 1;
-					return;
-				}
-			}
-		}
-		tsec->sid = sid;
+		update_rlimit_cpu(rlim->rlim_cur);
 	}
 }
 
 /*
- * called after apply_creds without the task lock held
+ * Clean up the process immediately after the installation of new credentials
+ * due to exec
  */
-static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm)
+static void selinux_bprm_committed_creds(struct linux_binprm *bprm)
 {
-	struct task_security_struct *tsec;
-	struct rlimit *rlim, *initrlim;
+	const struct task_security_struct *tsec = current_security();
 	struct itimerval itimer;
-	struct bprm_security_struct *bsec;
+	struct sighand_struct *psig;
+	u32 osid, sid;
 	int rc, i;
+	unsigned long flags;
 
-	tsec = current->security;
-	bsec = bprm->security;
+	secondary_ops->bprm_committed_creds(bprm);
 
-	if (bsec->unsafe) {
-		force_sig_specific(SIGKILL, current);
-		return;
-	}
-	if (tsec->osid == tsec->sid)
+	osid = tsec->osid;
+	sid = tsec->sid;
+
+	if (sid == osid)
 		return;
 
-	/* Close files for which the new task SID is not authorized. */
-	flush_unauthorized_files(current->files);
-
-	/* Check whether the new SID can inherit signal state
-	   from the old SID.  If not, clear itimers to avoid
-	   subsequent signal generation and flush and unblock
-	   signals. This must occur _after_ the task SID has
-	  been updated so that any kill done after the flush
-	  will be checked against the new SID. */
-	rc = avc_has_perm(tsec->osid, tsec->sid, SECCLASS_PROCESS,
-			  PROCESS__SIGINH, NULL);
+	/* Check whether the new SID can inherit signal state from the old SID.
+	 * If not, clear itimers to avoid subsequent signal generation and
+	 * flush and unblock signals.
+	 *
+	 * This must occur _after_ the task SID has been updated so that any
+	 * kill done after the flush will be checked against the new SID.
+	 */
+	rc = avc_has_perm(osid, sid, SECCLASS_PROCESS, PROCESS__SIGINH, NULL);
 	if (rc) {
 		memset(&itimer, 0, sizeof itimer);
 		for (i = 0; i < 3; i++)
@@ -2304,33 +2362,14 @@
 		spin_unlock_irq(&current->sighand->siglock);
 	}
 
-	/* Always clear parent death signal on SID transitions. */
-	current->pdeath_signal = 0;
-
-	/* Check whether the new SID can inherit resource limits
-	   from the old SID.  If not, reset all soft limits to
-	   the lower of the current task's hard limit and the init
-	   task's soft limit.  Note that the setting of hard limits
-	   (even to lower them) can be controlled by the setrlimit
-	   check. The inclusion of the init task's soft limit into
-	   the computation is to avoid resetting soft limits higher
-	   than the default soft limit for cases where the default
-	   is lower than the hard limit, e.g. RLIMIT_CORE or
-	   RLIMIT_STACK.*/
-	rc = avc_has_perm(tsec->osid, tsec->sid, SECCLASS_PROCESS,
-			  PROCESS__RLIMITINH, NULL);
-	if (rc) {
-		for (i = 0; i < RLIM_NLIMITS; i++) {
-			rlim = current->signal->rlim + i;
-			initrlim = init_task.signal->rlim+i;
-			rlim->rlim_cur = min(rlim->rlim_max, initrlim->rlim_cur);
-		}
-		update_rlimit_cpu(rlim->rlim_cur);
-	}
-
-	/* Wake up the parent if it is waiting so that it can
-	   recheck wait permission to the new task SID. */
+	/* Wake up the parent if it is waiting so that it can recheck
+	 * wait permission to the new task SID. */
+	read_lock_irq(&tasklist_lock);
+	psig = current->parent->sighand;
+	spin_lock_irqsave(&psig->siglock, flags);
 	wake_up_interruptible(&current->parent->signal->wait_chldexit);
+	spin_unlock_irqrestore(&psig->siglock, flags);
+	read_unlock_irq(&tasklist_lock);
 }
 
 /* superblock security operations */
@@ -2437,6 +2476,7 @@
 
 static int selinux_sb_kern_mount(struct super_block *sb, void *data)
 {
+	const struct cred *cred = current_cred();
 	struct avc_audit_data ad;
 	int rc;
 
@@ -2446,16 +2486,17 @@
 
 	AVC_AUDIT_DATA_INIT(&ad, FS);
 	ad.u.fs.path.dentry = sb->s_root;
-	return superblock_has_perm(current, sb, FILESYSTEM__MOUNT, &ad);
+	return superblock_has_perm(cred, sb, FILESYSTEM__MOUNT, &ad);
 }
 
 static int selinux_sb_statfs(struct dentry *dentry)
 {
+	const struct cred *cred = current_cred();
 	struct avc_audit_data ad;
 
 	AVC_AUDIT_DATA_INIT(&ad, FS);
 	ad.u.fs.path.dentry = dentry->d_sb->s_root;
-	return superblock_has_perm(current, dentry->d_sb, FILESYSTEM__GETATTR, &ad);
+	return superblock_has_perm(cred, dentry->d_sb, FILESYSTEM__GETATTR, &ad);
 }
 
 static int selinux_mount(char *dev_name,
@@ -2464,6 +2505,7 @@
 			 unsigned long flags,
 			 void *data)
 {
+	const struct cred *cred = current_cred();
 	int rc;
 
 	rc = secondary_ops->sb_mount(dev_name, path, type, flags, data);
@@ -2471,22 +2513,23 @@
 		return rc;
 
 	if (flags & MS_REMOUNT)
-		return superblock_has_perm(current, path->mnt->mnt_sb,
+		return superblock_has_perm(cred, path->mnt->mnt_sb,
 					   FILESYSTEM__REMOUNT, NULL);
 	else
-		return dentry_has_perm(current, path->mnt, path->dentry,
+		return dentry_has_perm(cred, path->mnt, path->dentry,
 				       FILE__MOUNTON);
 }
 
 static int selinux_umount(struct vfsmount *mnt, int flags)
 {
+	const struct cred *cred = current_cred();
 	int rc;
 
 	rc = secondary_ops->sb_umount(mnt, flags);
 	if (rc)
 		return rc;
 
-	return superblock_has_perm(current, mnt->mnt_sb,
+	return superblock_has_perm(cred, mnt->mnt_sb,
 				   FILESYSTEM__UNMOUNT, NULL);
 }
 
@@ -2506,21 +2549,22 @@
 				       char **name, void **value,
 				       size_t *len)
 {
-	struct task_security_struct *tsec;
+	const struct cred *cred = current_cred();
+	const struct task_security_struct *tsec = cred->security;
 	struct inode_security_struct *dsec;
 	struct superblock_security_struct *sbsec;
-	u32 newsid, clen;
+	u32 sid, newsid, clen;
 	int rc;
 	char *namep = NULL, *context;
 
-	tsec = current->security;
 	dsec = dir->i_security;
 	sbsec = dir->i_sb->s_security;
 
-	if (tsec->create_sid && sbsec->behavior != SECURITY_FS_USE_MNTPOINT) {
-		newsid = tsec->create_sid;
-	} else {
-		rc = security_transition_sid(tsec->sid, dsec->sid,
+	sid = tsec->sid;
+	newsid = tsec->create_sid;
+
+	if (!newsid || sbsec->behavior == SECURITY_FS_USE_MNTPOINT) {
+		rc = security_transition_sid(sid, dsec->sid,
 					     inode_mode_to_security_class(inode->i_mode),
 					     &newsid);
 		if (rc) {
@@ -2623,21 +2667,25 @@
 
 static int selinux_inode_readlink(struct dentry *dentry)
 {
-	return dentry_has_perm(current, NULL, dentry, FILE__READ);
+	const struct cred *cred = current_cred();
+
+	return dentry_has_perm(cred, NULL, dentry, FILE__READ);
 }
 
 static int selinux_inode_follow_link(struct dentry *dentry, struct nameidata *nameidata)
 {
+	const struct cred *cred = current_cred();
 	int rc;
 
 	rc = secondary_ops->inode_follow_link(dentry, nameidata);
 	if (rc)
 		return rc;
-	return dentry_has_perm(current, NULL, dentry, FILE__READ);
+	return dentry_has_perm(cred, NULL, dentry, FILE__READ);
 }
 
 static int selinux_inode_permission(struct inode *inode, int mask)
 {
+	const struct cred *cred = current_cred();
 	int rc;
 
 	rc = secondary_ops->inode_permission(inode, mask);
@@ -2649,12 +2697,13 @@
 		return 0;
 	}
 
-	return inode_has_perm(current, inode,
-			       open_file_mask_to_av(inode->i_mode, mask), NULL);
+	return inode_has_perm(cred, inode,
+			      file_mask_to_av(inode->i_mode, mask), NULL);
 }
 
 static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr)
 {
+	const struct cred *cred = current_cred();
 	int rc;
 
 	rc = secondary_ops->inode_setattr(dentry, iattr);
@@ -2666,18 +2715,22 @@
 
 	if (iattr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
 			       ATTR_ATIME_SET | ATTR_MTIME_SET))
-		return dentry_has_perm(current, NULL, dentry, FILE__SETATTR);
+		return dentry_has_perm(cred, NULL, dentry, FILE__SETATTR);
 
-	return dentry_has_perm(current, NULL, dentry, FILE__WRITE);
+	return dentry_has_perm(cred, NULL, dentry, FILE__WRITE);
 }
 
 static int selinux_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 {
-	return dentry_has_perm(current, mnt, dentry, FILE__GETATTR);
+	const struct cred *cred = current_cred();
+
+	return dentry_has_perm(cred, mnt, dentry, FILE__GETATTR);
 }
 
 static int selinux_inode_setotherxattr(struct dentry *dentry, const char *name)
 {
+	const struct cred *cred = current_cred();
+
 	if (!strncmp(name, XATTR_SECURITY_PREFIX,
 		     sizeof XATTR_SECURITY_PREFIX - 1)) {
 		if (!strcmp(name, XATTR_NAME_CAPS)) {
@@ -2692,18 +2745,17 @@
 
 	/* Not an attribute we recognize, so just check the
 	   ordinary setattr permission. */
-	return dentry_has_perm(current, NULL, dentry, FILE__SETATTR);
+	return dentry_has_perm(cred, NULL, dentry, FILE__SETATTR);
 }
 
 static int selinux_inode_setxattr(struct dentry *dentry, const char *name,
 				  const void *value, size_t size, int flags)
 {
-	struct task_security_struct *tsec = current->security;
 	struct inode *inode = dentry->d_inode;
 	struct inode_security_struct *isec = inode->i_security;
 	struct superblock_security_struct *sbsec;
 	struct avc_audit_data ad;
-	u32 newsid;
+	u32 newsid, sid = current_sid();
 	int rc = 0;
 
 	if (strcmp(name, XATTR_NAME_SELINUX))
@@ -2719,7 +2771,7 @@
 	AVC_AUDIT_DATA_INIT(&ad, FS);
 	ad.u.fs.path.dentry = dentry;
 
-	rc = avc_has_perm(tsec->sid, isec->sid, isec->sclass,
+	rc = avc_has_perm(sid, isec->sid, isec->sclass,
 			  FILE__RELABELFROM, &ad);
 	if (rc)
 		return rc;
@@ -2733,12 +2785,12 @@
 	if (rc)
 		return rc;
 
-	rc = avc_has_perm(tsec->sid, newsid, isec->sclass,
+	rc = avc_has_perm(sid, newsid, isec->sclass,
 			  FILE__RELABELTO, &ad);
 	if (rc)
 		return rc;
 
-	rc = security_validate_transition(isec->sid, newsid, tsec->sid,
+	rc = security_validate_transition(isec->sid, newsid, sid,
 					  isec->sclass);
 	if (rc)
 		return rc;
@@ -2778,12 +2830,16 @@
 
 static int selinux_inode_getxattr(struct dentry *dentry, const char *name)
 {
-	return dentry_has_perm(current, NULL, dentry, FILE__GETATTR);
+	const struct cred *cred = current_cred();
+
+	return dentry_has_perm(cred, NULL, dentry, FILE__GETATTR);
 }
 
 static int selinux_inode_listxattr(struct dentry *dentry)
 {
-	return dentry_has_perm(current, NULL, dentry, FILE__GETATTR);
+	const struct cred *cred = current_cred();
+
+	return dentry_has_perm(cred, NULL, dentry, FILE__GETATTR);
 }
 
 static int selinux_inode_removexattr(struct dentry *dentry, const char *name)
@@ -2806,7 +2862,6 @@
 	u32 size;
 	int error;
 	char *context = NULL;
-	struct task_security_struct *tsec = current->security;
 	struct inode_security_struct *isec = inode->i_security;
 
 	if (strcmp(name, XATTR_SELINUX_SUFFIX))
@@ -2821,13 +2876,7 @@
 	 * and lack of permission just means that we fall back to the
 	 * in-core context value, not a denial.
 	 */
-	error = secondary_ops->capable(current, CAP_MAC_ADMIN);
-	if (!error)
-		error = avc_has_perm_noaudit(tsec->sid, tsec->sid,
-					     SECCLASS_CAPABILITY2,
-					     CAPABILITY2__MAC_ADMIN,
-					     0,
-					     NULL);
+	error = selinux_capable(current, CAP_MAC_ADMIN, SECURITY_CAP_NOAUDIT);
 	if (!error)
 		error = security_sid_to_context_force(isec->sid, &context,
 						      &size);
@@ -2894,6 +2943,7 @@
 
 static int selinux_revalidate_file_permission(struct file *file, int mask)
 {
+	const struct cred *cred = current_cred();
 	int rc;
 	struct inode *inode = file->f_path.dentry->d_inode;
 
@@ -2906,7 +2956,7 @@
 	if ((file->f_flags & O_APPEND) && (mask & MAY_WRITE))
 		mask |= MAY_APPEND;
 
-	rc = file_has_perm(current, file,
+	rc = file_has_perm(cred, file,
 			   file_mask_to_av(inode->i_mode, mask));
 	if (rc)
 		return rc;
@@ -2917,16 +2967,16 @@
 static int selinux_file_permission(struct file *file, int mask)
 {
 	struct inode *inode = file->f_path.dentry->d_inode;
-	struct task_security_struct *tsec = current->security;
 	struct file_security_struct *fsec = file->f_security;
 	struct inode_security_struct *isec = inode->i_security;
+	u32 sid = current_sid();
 
 	if (!mask) {
 		/* No permission to check.  Existence test. */
 		return 0;
 	}
 
-	if (tsec->sid == fsec->sid && fsec->isid == isec->sid
+	if (sid == fsec->sid && fsec->isid == isec->sid
 	    && fsec->pseqno == avc_policy_seqno())
 		return selinux_netlbl_inode_permission(inode, mask);
 
@@ -2946,6 +2996,7 @@
 static int selinux_file_ioctl(struct file *file, unsigned int cmd,
 			      unsigned long arg)
 {
+	const struct cred *cred = current_cred();
 	u32 av = 0;
 
 	if (_IOC_DIR(cmd) & _IOC_WRITE)
@@ -2955,11 +3006,14 @@
 	if (!av)
 		av = FILE__IOCTL;
 
-	return file_has_perm(current, file, av);
+	return file_has_perm(cred, file, av);
 }
 
 static int file_map_prot_check(struct file *file, unsigned long prot, int shared)
 {
+	const struct cred *cred = current_cred();
+	int rc = 0;
+
 #ifndef CONFIG_PPC32
 	if ((prot & PROT_EXEC) && (!file || (!shared && (prot & PROT_WRITE)))) {
 		/*
@@ -2967,9 +3021,9 @@
 		 * private file mapping that will also be writable.
 		 * This has an additional check.
 		 */
-		int rc = task_has_perm(current, current, PROCESS__EXECMEM);
+		rc = cred_has_perm(cred, cred, PROCESS__EXECMEM);
 		if (rc)
-			return rc;
+			goto error;
 	}
 #endif
 
@@ -2984,9 +3038,11 @@
 		if (prot & PROT_EXEC)
 			av |= FILE__EXECUTE;
 
-		return file_has_perm(current, file, av);
+		return file_has_perm(cred, file, av);
 	}
-	return 0;
+
+error:
+	return rc;
 }
 
 static int selinux_file_mmap(struct file *file, unsigned long reqprot,
@@ -2994,7 +3050,7 @@
 			     unsigned long addr, unsigned long addr_only)
 {
 	int rc = 0;
-	u32 sid = ((struct task_security_struct *)(current->security))->sid;
+	u32 sid = current_sid();
 
 	if (addr < mmap_min_addr)
 		rc = avc_has_perm(sid, sid, SECCLASS_MEMPROTECT,
@@ -3013,6 +3069,7 @@
 				 unsigned long reqprot,
 				 unsigned long prot)
 {
+	const struct cred *cred = current_cred();
 	int rc;
 
 	rc = secondary_ops->file_mprotect(vma, reqprot, prot);
@@ -3027,12 +3084,11 @@
 		rc = 0;
 		if (vma->vm_start >= vma->vm_mm->start_brk &&
 		    vma->vm_end <= vma->vm_mm->brk) {
-			rc = task_has_perm(current, current,
-					   PROCESS__EXECHEAP);
+			rc = cred_has_perm(cred, cred, PROCESS__EXECHEAP);
 		} else if (!vma->vm_file &&
 			   vma->vm_start <= vma->vm_mm->start_stack &&
 			   vma->vm_end >= vma->vm_mm->start_stack) {
-			rc = task_has_perm(current, current, PROCESS__EXECSTACK);
+			rc = current_has_perm(current, PROCESS__EXECSTACK);
 		} else if (vma->vm_file && vma->anon_vma) {
 			/*
 			 * We are making executable a file mapping that has
@@ -3041,8 +3097,7 @@
 			 * modified content.  This typically should only
 			 * occur for text relocations.
 			 */
-			rc = file_has_perm(current, vma->vm_file,
-					   FILE__EXECMOD);
+			rc = file_has_perm(cred, vma->vm_file, FILE__EXECMOD);
 		}
 		if (rc)
 			return rc;
@@ -3054,12 +3109,15 @@
 
 static int selinux_file_lock(struct file *file, unsigned int cmd)
 {
-	return file_has_perm(current, file, FILE__LOCK);
+	const struct cred *cred = current_cred();
+
+	return file_has_perm(cred, file, FILE__LOCK);
 }
 
 static int selinux_file_fcntl(struct file *file, unsigned int cmd,
 			      unsigned long arg)
 {
+	const struct cred *cred = current_cred();
 	int err = 0;
 
 	switch (cmd) {
@@ -3070,7 +3128,7 @@
 		}
 
 		if ((file->f_flags & O_APPEND) && !(arg & O_APPEND)) {
-			err = file_has_perm(current, file, FILE__WRITE);
+			err = file_has_perm(cred, file, FILE__WRITE);
 			break;
 		}
 		/* fall through */
@@ -3080,7 +3138,7 @@
 	case F_GETOWN:
 	case F_GETSIG:
 		/* Just check FD__USE permission */
-		err = file_has_perm(current, file, 0);
+		err = file_has_perm(cred, file, 0);
 		break;
 	case F_GETLK:
 	case F_SETLK:
@@ -3094,7 +3152,7 @@
 			err = -EINVAL;
 			break;
 		}
-		err = file_has_perm(current, file, FILE__LOCK);
+		err = file_has_perm(cred, file, FILE__LOCK);
 		break;
 	}
 
@@ -3103,12 +3161,10 @@
 
 static int selinux_file_set_fowner(struct file *file)
 {
-	struct task_security_struct *tsec;
 	struct file_security_struct *fsec;
 
-	tsec = current->security;
 	fsec = file->f_security;
-	fsec->fown_sid = tsec->sid;
+	fsec->fown_sid = current_sid();
 
 	return 0;
 }
@@ -3117,14 +3173,13 @@
 				       struct fown_struct *fown, int signum)
 {
 	struct file *file;
+	u32 sid = current_sid();
 	u32 perm;
-	struct task_security_struct *tsec;
 	struct file_security_struct *fsec;
 
 	/* struct fown_struct is never outside the context of a struct file */
 	file = container_of(fown, struct file, f_owner);
 
-	tsec = tsk->security;
 	fsec = file->f_security;
 
 	if (!signum)
@@ -3132,20 +3187,23 @@
 	else
 		perm = signal_to_av(signum);
 
-	return avc_has_perm(fsec->fown_sid, tsec->sid,
+	return avc_has_perm(fsec->fown_sid, sid,
 			    SECCLASS_PROCESS, perm, NULL);
 }
 
 static int selinux_file_receive(struct file *file)
 {
-	return file_has_perm(current, file, file_to_av(file));
+	const struct cred *cred = current_cred();
+
+	return file_has_perm(cred, file, file_to_av(file));
 }
 
-static int selinux_dentry_open(struct file *file)
+static int selinux_dentry_open(struct file *file, const struct cred *cred)
 {
 	struct file_security_struct *fsec;
 	struct inode *inode;
 	struct inode_security_struct *isec;
+
 	inode = file->f_path.dentry->d_inode;
 	fsec = file->f_security;
 	isec = inode->i_security;
@@ -3166,7 +3224,7 @@
 	 * new inode label or new policy.
 	 * This check is not redundant - do not remove.
 	 */
-	return inode_has_perm(current, inode, file_to_av(file), NULL);
+	return inode_has_perm(cred, inode, open_file_to_av(file), NULL);
 }
 
 /* task security operations */
@@ -3179,36 +3237,88 @@
 	if (rc)
 		return rc;
 
-	return task_has_perm(current, current, PROCESS__FORK);
+	return current_has_perm(current, PROCESS__FORK);
 }
 
-static int selinux_task_alloc_security(struct task_struct *tsk)
+/*
+ * detach and free the LSM part of a set of credentials
+ */
+static void selinux_cred_free(struct cred *cred)
 {
-	struct task_security_struct *tsec1, *tsec2;
-	int rc;
+	struct task_security_struct *tsec = cred->security;
+	cred->security = NULL;
+	kfree(tsec);
+}
 
-	tsec1 = current->security;
+/*
+ * prepare a new set of credentials for modification
+ */
+static int selinux_cred_prepare(struct cred *new, const struct cred *old,
+				gfp_t gfp)
+{
+	const struct task_security_struct *old_tsec;
+	struct task_security_struct *tsec;
 
-	rc = task_alloc_security(tsk);
-	if (rc)
-		return rc;
-	tsec2 = tsk->security;
+	old_tsec = old->security;
 
-	tsec2->osid = tsec1->osid;
-	tsec2->sid = tsec1->sid;
+	tsec = kmemdup(old_tsec, sizeof(struct task_security_struct), gfp);
+	if (!tsec)
+		return -ENOMEM;
 
-	/* Retain the exec, fs, key, and sock SIDs across fork */
-	tsec2->exec_sid = tsec1->exec_sid;
-	tsec2->create_sid = tsec1->create_sid;
-	tsec2->keycreate_sid = tsec1->keycreate_sid;
-	tsec2->sockcreate_sid = tsec1->sockcreate_sid;
-
+	new->security = tsec;
 	return 0;
 }
 
-static void selinux_task_free_security(struct task_struct *tsk)
+/*
+ * commit new credentials
+ */
+static void selinux_cred_commit(struct cred *new, const struct cred *old)
 {
-	task_free_security(tsk);
+	secondary_ops->cred_commit(new, old);
+}
+
+/*
+ * set the security data for a kernel service
+ * - all the creation contexts are set to unlabelled
+ */
+static int selinux_kernel_act_as(struct cred *new, u32 secid)
+{
+	struct task_security_struct *tsec = new->security;
+	u32 sid = current_sid();
+	int ret;
+
+	ret = avc_has_perm(sid, secid,
+			   SECCLASS_KERNEL_SERVICE,
+			   KERNEL_SERVICE__USE_AS_OVERRIDE,
+			   NULL);
+	if (ret == 0) {
+		tsec->sid = secid;
+		tsec->create_sid = 0;
+		tsec->keycreate_sid = 0;
+		tsec->sockcreate_sid = 0;
+	}
+	return ret;
+}
+
+/*
+ * set the file creation context in a security record to the same as the
+ * objective context of the specified inode
+ */
+static int selinux_kernel_create_files_as(struct cred *new, struct inode *inode)
+{
+	struct inode_security_struct *isec = inode->i_security;
+	struct task_security_struct *tsec = new->security;
+	u32 sid = current_sid();
+	int ret;
+
+	ret = avc_has_perm(sid, isec->sid,
+			   SECCLASS_KERNEL_SERVICE,
+			   KERNEL_SERVICE__CREATE_FILES_AS,
+			   NULL);
+
+	if (ret == 0)
+		tsec->create_sid = isec->sid;
+	return 0;
 }
 
 static int selinux_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
@@ -3222,9 +3332,10 @@
 	return 0;
 }
 
-static int selinux_task_post_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
+static int selinux_task_fix_setuid(struct cred *new, const struct cred *old,
+				   int flags)
 {
-	return secondary_ops->task_post_setuid(id0, id1, id2, flags);
+	return secondary_ops->task_fix_setuid(new, old, flags);
 }
 
 static int selinux_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
@@ -3235,23 +3346,22 @@
 
 static int selinux_task_setpgid(struct task_struct *p, pid_t pgid)
 {
-	return task_has_perm(current, p, PROCESS__SETPGID);
+	return current_has_perm(p, PROCESS__SETPGID);
 }
 
 static int selinux_task_getpgid(struct task_struct *p)
 {
-	return task_has_perm(current, p, PROCESS__GETPGID);
+	return current_has_perm(p, PROCESS__GETPGID);
 }
 
 static int selinux_task_getsid(struct task_struct *p)
 {
-	return task_has_perm(current, p, PROCESS__GETSESSION);
+	return current_has_perm(p, PROCESS__GETSESSION);
 }
 
 static void selinux_task_getsecid(struct task_struct *p, u32 *secid)
 {
-	struct task_security_struct *tsec = p->security;
-	*secid = tsec->sid;
+	*secid = task_sid(p);
 }
 
 static int selinux_task_setgroups(struct group_info *group_info)
@@ -3268,7 +3378,7 @@
 	if (rc)
 		return rc;
 
-	return task_has_perm(current, p, PROCESS__SETSCHED);
+	return current_has_perm(p, PROCESS__SETSCHED);
 }
 
 static int selinux_task_setioprio(struct task_struct *p, int ioprio)
@@ -3279,12 +3389,12 @@
 	if (rc)
 		return rc;
 
-	return task_has_perm(current, p, PROCESS__SETSCHED);
+	return current_has_perm(p, PROCESS__SETSCHED);
 }
 
 static int selinux_task_getioprio(struct task_struct *p)
 {
-	return task_has_perm(current, p, PROCESS__GETSCHED);
+	return current_has_perm(p, PROCESS__GETSCHED);
 }
 
 static int selinux_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
@@ -3299,9 +3409,9 @@
 	/* Control the ability to change the hard limit (whether
 	   lowering or raising it), so that the hard limit can
 	   later be used as a safe reset point for the soft limit
-	   upon context transitions. See selinux_bprm_apply_creds. */
+	   upon context transitions.  See selinux_bprm_committing_creds. */
 	if (old_rlim->rlim_max != new_rlim->rlim_max)
-		return task_has_perm(current, current, PROCESS__SETRLIMIT);
+		return current_has_perm(current, PROCESS__SETRLIMIT);
 
 	return 0;
 }
@@ -3314,17 +3424,17 @@
 	if (rc)
 		return rc;
 
-	return task_has_perm(current, p, PROCESS__SETSCHED);
+	return current_has_perm(p, PROCESS__SETSCHED);
 }
 
 static int selinux_task_getscheduler(struct task_struct *p)
 {
-	return task_has_perm(current, p, PROCESS__GETSCHED);
+	return current_has_perm(p, PROCESS__GETSCHED);
 }
 
 static int selinux_task_movememory(struct task_struct *p)
 {
-	return task_has_perm(current, p, PROCESS__SETSCHED);
+	return current_has_perm(p, PROCESS__SETSCHED);
 }
 
 static int selinux_task_kill(struct task_struct *p, struct siginfo *info,
@@ -3332,7 +3442,6 @@
 {
 	u32 perm;
 	int rc;
-	struct task_security_struct *tsec;
 
 	rc = secondary_ops->task_kill(p, info, sig, secid);
 	if (rc)
@@ -3342,11 +3451,11 @@
 		perm = PROCESS__SIGNULL; /* null signal; existence test */
 	else
 		perm = signal_to_av(sig);
-	tsec = p->security;
 	if (secid)
-		rc = avc_has_perm(secid, tsec->sid, SECCLASS_PROCESS, perm, NULL);
+		rc = avc_has_perm(secid, task_sid(p),
+				  SECCLASS_PROCESS, perm, NULL);
 	else
-		rc = task_has_perm(current, p, perm);
+		rc = current_has_perm(p, perm);
 	return rc;
 }
 
@@ -3354,13 +3463,12 @@
 			      unsigned long arg2,
 			      unsigned long arg3,
 			      unsigned long arg4,
-			      unsigned long arg5,
-			      long *rc_p)
+			      unsigned long arg5)
 {
 	/* The current prctl operations do not appear to require
 	   any SELinux controls since they merely observe or modify
 	   the state of the current process. */
-	return secondary_ops->task_prctl(option, arg2, arg3, arg4, arg5, rc_p);
+	return secondary_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 }
 
 static int selinux_task_wait(struct task_struct *p)
@@ -3368,27 +3476,14 @@
 	return task_has_perm(p, current, PROCESS__SIGCHLD);
 }
 
-static void selinux_task_reparent_to_init(struct task_struct *p)
-{
-	struct task_security_struct *tsec;
-
-	secondary_ops->task_reparent_to_init(p);
-
-	tsec = p->security;
-	tsec->osid = tsec->sid;
-	tsec->sid = SECINITSID_KERNEL;
-	return;
-}
-
 static void selinux_task_to_inode(struct task_struct *p,
 				  struct inode *inode)
 {
-	struct task_security_struct *tsec = p->security;
 	struct inode_security_struct *isec = inode->i_security;
+	u32 sid = task_sid(p);
 
-	isec->sid = tsec->sid;
+	isec->sid = sid;
 	isec->initialized = 1;
-	return;
 }
 
 /* Returns error only if unable to parse addresses */
@@ -3627,19 +3722,19 @@
 			   u32 perms)
 {
 	struct inode_security_struct *isec;
-	struct task_security_struct *tsec;
 	struct avc_audit_data ad;
+	u32 sid;
 	int err = 0;
 
-	tsec = task->security;
 	isec = SOCK_INODE(sock)->i_security;
 
 	if (isec->sid == SECINITSID_KERNEL)
 		goto out;
+	sid = task_sid(task);
 
 	AVC_AUDIT_DATA_INIT(&ad, NET);
 	ad.u.net.sk = sock->sk;
-	err = avc_has_perm(tsec->sid, isec->sid, isec->sclass, perms, &ad);
+	err = avc_has_perm(sid, isec->sid, isec->sclass, perms, &ad);
 
 out:
 	return err;
@@ -3648,18 +3743,20 @@
 static int selinux_socket_create(int family, int type,
 				 int protocol, int kern)
 {
+	const struct cred *cred = current_cred();
+	const struct task_security_struct *tsec = cred->security;
+	u32 sid, newsid;
+	u16 secclass;
 	int err = 0;
-	struct task_security_struct *tsec;
-	u32 newsid;
 
 	if (kern)
 		goto out;
 
-	tsec = current->security;
-	newsid = tsec->sockcreate_sid ? : tsec->sid;
-	err = avc_has_perm(tsec->sid, newsid,
-			   socket_type_to_security_class(family, type,
-			   protocol), SOCKET__CREATE, NULL);
+	sid = tsec->sid;
+	newsid = tsec->sockcreate_sid ?: sid;
+
+	secclass = socket_type_to_security_class(family, type, protocol);
+	err = avc_has_perm(sid, newsid, secclass, SOCKET__CREATE, NULL);
 
 out:
 	return err;
@@ -3668,18 +3765,26 @@
 static int selinux_socket_post_create(struct socket *sock, int family,
 				      int type, int protocol, int kern)
 {
-	int err = 0;
+	const struct cred *cred = current_cred();
+	const struct task_security_struct *tsec = cred->security;
 	struct inode_security_struct *isec;
-	struct task_security_struct *tsec;
 	struct sk_security_struct *sksec;
-	u32 newsid;
+	u32 sid, newsid;
+	int err = 0;
+
+	sid = tsec->sid;
+	newsid = tsec->sockcreate_sid;
 
 	isec = SOCK_INODE(sock)->i_security;
 
-	tsec = current->security;
-	newsid = tsec->sockcreate_sid ? : tsec->sid;
+	if (kern)
+		isec->sid = SECINITSID_KERNEL;
+	else if (newsid)
+		isec->sid = newsid;
+	else
+		isec->sid = sid;
+
 	isec->sclass = socket_type_to_security_class(family, type, protocol);
-	isec->sid = kern ? SECINITSID_KERNEL : newsid;
 	isec->initialized = 1;
 
 	if (sock->sk) {
@@ -3714,7 +3819,6 @@
 	if (family == PF_INET || family == PF_INET6) {
 		char *addrp;
 		struct inode_security_struct *isec;
-		struct task_security_struct *tsec;
 		struct avc_audit_data ad;
 		struct sockaddr_in *addr4 = NULL;
 		struct sockaddr_in6 *addr6 = NULL;
@@ -3722,7 +3826,6 @@
 		struct sock *sk = sock->sk;
 		u32 sid, node_perm;
 
-		tsec = current->security;
 		isec = SOCK_INODE(sock)->i_security;
 
 		if (family == PF_INET) {
@@ -4387,7 +4490,7 @@
 				  "SELinux:  unrecognized netlink message"
 				  " type=%hu for sclass=%hu\n",
 				  nlh->nlmsg_type, isec->sclass);
-			if (!selinux_enforcing)
+			if (!selinux_enforcing || security_get_allow_unknown())
 				err = 0;
 		}
 
@@ -4763,15 +4866,16 @@
 			      struct kern_ipc_perm *perm,
 			      u16 sclass)
 {
-	struct task_security_struct *tsec = task->security;
 	struct ipc_security_struct *isec;
+	u32 sid;
 
 	isec = kzalloc(sizeof(struct ipc_security_struct), GFP_KERNEL);
 	if (!isec)
 		return -ENOMEM;
 
+	sid = task_sid(task);
 	isec->sclass = sclass;
-	isec->sid = tsec->sid;
+	isec->sid = sid;
 	perm->security = isec;
 
 	return 0;
@@ -4809,17 +4913,16 @@
 static int ipc_has_perm(struct kern_ipc_perm *ipc_perms,
 			u32 perms)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 
-	tsec = current->security;
 	isec = ipc_perms->security;
 
 	AVC_AUDIT_DATA_INIT(&ad, IPC);
 	ad.u.ipc_id = ipc_perms->key;
 
-	return avc_has_perm(tsec->sid, isec->sid, isec->sclass, perms, &ad);
+	return avc_has_perm(sid, isec->sid, isec->sclass, perms, &ad);
 }
 
 static int selinux_msg_msg_alloc_security(struct msg_msg *msg)
@@ -4835,22 +4938,21 @@
 /* message queue security operations */
 static int selinux_msg_queue_alloc_security(struct msg_queue *msq)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 	int rc;
 
 	rc = ipc_alloc_security(current, &msq->q_perm, SECCLASS_MSGQ);
 	if (rc)
 		return rc;
 
-	tsec = current->security;
 	isec = msq->q_perm.security;
 
 	AVC_AUDIT_DATA_INIT(&ad, IPC);
 	ad.u.ipc_id = msq->q_perm.key;
 
-	rc = avc_has_perm(tsec->sid, isec->sid, SECCLASS_MSGQ,
+	rc = avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
 			  MSGQ__CREATE, &ad);
 	if (rc) {
 		ipc_free_security(&msq->q_perm);
@@ -4866,17 +4968,16 @@
 
 static int selinux_msg_queue_associate(struct msg_queue *msq, int msqflg)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 
-	tsec = current->security;
 	isec = msq->q_perm.security;
 
 	AVC_AUDIT_DATA_INIT(&ad, IPC);
 	ad.u.ipc_id = msq->q_perm.key;
 
-	return avc_has_perm(tsec->sid, isec->sid, SECCLASS_MSGQ,
+	return avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
 			    MSGQ__ASSOCIATE, &ad);
 }
 
@@ -4910,13 +5011,12 @@
 
 static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg, int msqflg)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct msg_security_struct *msec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 	int rc;
 
-	tsec = current->security;
 	isec = msq->q_perm.security;
 	msec = msg->security;
 
@@ -4928,9 +5028,7 @@
 		 * Compute new sid based on current process and
 		 * message queue this message will be stored in
 		 */
-		rc = security_transition_sid(tsec->sid,
-					     isec->sid,
-					     SECCLASS_MSG,
+		rc = security_transition_sid(sid, isec->sid, SECCLASS_MSG,
 					     &msec->sid);
 		if (rc)
 			return rc;
@@ -4940,16 +5038,16 @@
 	ad.u.ipc_id = msq->q_perm.key;
 
 	/* Can this process write to the queue? */
-	rc = avc_has_perm(tsec->sid, isec->sid, SECCLASS_MSGQ,
+	rc = avc_has_perm(sid, isec->sid, SECCLASS_MSGQ,
 			  MSGQ__WRITE, &ad);
 	if (!rc)
 		/* Can this process send the message */
-		rc = avc_has_perm(tsec->sid, msec->sid,
-				  SECCLASS_MSG, MSG__SEND, &ad);
+		rc = avc_has_perm(sid, msec->sid, SECCLASS_MSG,
+				  MSG__SEND, &ad);
 	if (!rc)
 		/* Can the message be put in the queue? */
-		rc = avc_has_perm(msec->sid, isec->sid,
-				  SECCLASS_MSGQ, MSGQ__ENQUEUE, &ad);
+		rc = avc_has_perm(msec->sid, isec->sid, SECCLASS_MSGQ,
+				  MSGQ__ENQUEUE, &ad);
 
 	return rc;
 }
@@ -4958,23 +5056,22 @@
 				    struct task_struct *target,
 				    long type, int mode)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct msg_security_struct *msec;
 	struct avc_audit_data ad;
+	u32 sid = task_sid(target);
 	int rc;
 
-	tsec = target->security;
 	isec = msq->q_perm.security;
 	msec = msg->security;
 
 	AVC_AUDIT_DATA_INIT(&ad, IPC);
 	ad.u.ipc_id = msq->q_perm.key;
 
-	rc = avc_has_perm(tsec->sid, isec->sid,
+	rc = avc_has_perm(sid, isec->sid,
 			  SECCLASS_MSGQ, MSGQ__READ, &ad);
 	if (!rc)
-		rc = avc_has_perm(tsec->sid, msec->sid,
+		rc = avc_has_perm(sid, msec->sid,
 				  SECCLASS_MSG, MSG__RECEIVE, &ad);
 	return rc;
 }
@@ -4982,22 +5079,21 @@
 /* Shared Memory security operations */
 static int selinux_shm_alloc_security(struct shmid_kernel *shp)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 	int rc;
 
 	rc = ipc_alloc_security(current, &shp->shm_perm, SECCLASS_SHM);
 	if (rc)
 		return rc;
 
-	tsec = current->security;
 	isec = shp->shm_perm.security;
 
 	AVC_AUDIT_DATA_INIT(&ad, IPC);
 	ad.u.ipc_id = shp->shm_perm.key;
 
-	rc = avc_has_perm(tsec->sid, isec->sid, SECCLASS_SHM,
+	rc = avc_has_perm(sid, isec->sid, SECCLASS_SHM,
 			  SHM__CREATE, &ad);
 	if (rc) {
 		ipc_free_security(&shp->shm_perm);
@@ -5013,17 +5109,16 @@
 
 static int selinux_shm_associate(struct shmid_kernel *shp, int shmflg)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 
-	tsec = current->security;
 	isec = shp->shm_perm.security;
 
 	AVC_AUDIT_DATA_INIT(&ad, IPC);
 	ad.u.ipc_id = shp->shm_perm.key;
 
-	return avc_has_perm(tsec->sid, isec->sid, SECCLASS_SHM,
+	return avc_has_perm(sid, isec->sid, SECCLASS_SHM,
 			    SHM__ASSOCIATE, &ad);
 }
 
@@ -5081,22 +5176,21 @@
 /* Semaphore security operations */
 static int selinux_sem_alloc_security(struct sem_array *sma)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 	int rc;
 
 	rc = ipc_alloc_security(current, &sma->sem_perm, SECCLASS_SEM);
 	if (rc)
 		return rc;
 
-	tsec = current->security;
 	isec = sma->sem_perm.security;
 
 	AVC_AUDIT_DATA_INIT(&ad, IPC);
 	ad.u.ipc_id = sma->sem_perm.key;
 
-	rc = avc_has_perm(tsec->sid, isec->sid, SECCLASS_SEM,
+	rc = avc_has_perm(sid, isec->sid, SECCLASS_SEM,
 			  SEM__CREATE, &ad);
 	if (rc) {
 		ipc_free_security(&sma->sem_perm);
@@ -5112,17 +5206,16 @@
 
 static int selinux_sem_associate(struct sem_array *sma, int semflg)
 {
-	struct task_security_struct *tsec;
 	struct ipc_security_struct *isec;
 	struct avc_audit_data ad;
+	u32 sid = current_sid();
 
-	tsec = current->security;
 	isec = sma->sem_perm.security;
 
 	AVC_AUDIT_DATA_INIT(&ad, IPC);
 	ad.u.ipc_id = sma->sem_perm.key;
 
-	return avc_has_perm(tsec->sid, isec->sid, SECCLASS_SEM,
+	return avc_has_perm(sid, isec->sid, SECCLASS_SEM,
 			    SEM__ASSOCIATE, &ad);
 }
 
@@ -5212,33 +5305,35 @@
 static int selinux_getprocattr(struct task_struct *p,
 			       char *name, char **value)
 {
-	struct task_security_struct *tsec;
+	const struct task_security_struct *__tsec;
 	u32 sid;
 	int error;
 	unsigned len;
 
 	if (current != p) {
-		error = task_has_perm(current, p, PROCESS__GETATTR);
+		error = current_has_perm(p, PROCESS__GETATTR);
 		if (error)
 			return error;
 	}
 
-	tsec = p->security;
+	rcu_read_lock();
+	__tsec = __task_cred(p)->security;
 
 	if (!strcmp(name, "current"))
-		sid = tsec->sid;
+		sid = __tsec->sid;
 	else if (!strcmp(name, "prev"))
-		sid = tsec->osid;
+		sid = __tsec->osid;
 	else if (!strcmp(name, "exec"))
-		sid = tsec->exec_sid;
+		sid = __tsec->exec_sid;
 	else if (!strcmp(name, "fscreate"))
-		sid = tsec->create_sid;
+		sid = __tsec->create_sid;
 	else if (!strcmp(name, "keycreate"))
-		sid = tsec->keycreate_sid;
+		sid = __tsec->keycreate_sid;
 	else if (!strcmp(name, "sockcreate"))
-		sid = tsec->sockcreate_sid;
+		sid = __tsec->sockcreate_sid;
 	else
-		return -EINVAL;
+		goto invalid;
+	rcu_read_unlock();
 
 	if (!sid)
 		return 0;
@@ -5247,6 +5342,10 @@
 	if (error)
 		return error;
 	return len;
+
+invalid:
+	rcu_read_unlock();
+	return -EINVAL;
 }
 
 static int selinux_setprocattr(struct task_struct *p,
@@ -5254,7 +5353,8 @@
 {
 	struct task_security_struct *tsec;
 	struct task_struct *tracer;
-	u32 sid = 0;
+	struct cred *new;
+	u32 sid = 0, ptsid;
 	int error;
 	char *str = value;
 
@@ -5270,15 +5370,15 @@
 	 * above restriction is ever removed.
 	 */
 	if (!strcmp(name, "exec"))
-		error = task_has_perm(current, p, PROCESS__SETEXEC);
+		error = current_has_perm(p, PROCESS__SETEXEC);
 	else if (!strcmp(name, "fscreate"))
-		error = task_has_perm(current, p, PROCESS__SETFSCREATE);
+		error = current_has_perm(p, PROCESS__SETFSCREATE);
 	else if (!strcmp(name, "keycreate"))
-		error = task_has_perm(current, p, PROCESS__SETKEYCREATE);
+		error = current_has_perm(p, PROCESS__SETKEYCREATE);
 	else if (!strcmp(name, "sockcreate"))
-		error = task_has_perm(current, p, PROCESS__SETSOCKCREATE);
+		error = current_has_perm(p, PROCESS__SETSOCKCREATE);
 	else if (!strcmp(name, "current"))
-		error = task_has_perm(current, p, PROCESS__SETCURRENT);
+		error = current_has_perm(p, PROCESS__SETCURRENT);
 	else
 		error = -EINVAL;
 	if (error)
@@ -5301,87 +5401,75 @@
 			return error;
 	}
 
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+
 	/* Permission checking based on the specified context is
 	   performed during the actual operation (execve,
 	   open/mkdir/...), when we know the full context of the
-	   operation.  See selinux_bprm_set_security for the execve
+	   operation.  See selinux_bprm_set_creds for the execve
 	   checks and may_create for the file creation checks. The
 	   operation will then fail if the context is not permitted. */
-	tsec = p->security;
-	if (!strcmp(name, "exec"))
+	tsec = new->security;
+	if (!strcmp(name, "exec")) {
 		tsec->exec_sid = sid;
-	else if (!strcmp(name, "fscreate"))
+	} else if (!strcmp(name, "fscreate")) {
 		tsec->create_sid = sid;
-	else if (!strcmp(name, "keycreate")) {
+	} else if (!strcmp(name, "keycreate")) {
 		error = may_create_key(sid, p);
 		if (error)
-			return error;
+			goto abort_change;
 		tsec->keycreate_sid = sid;
-	} else if (!strcmp(name, "sockcreate"))
+	} else if (!strcmp(name, "sockcreate")) {
 		tsec->sockcreate_sid = sid;
-	else if (!strcmp(name, "current")) {
-		struct av_decision avd;
-
+	} else if (!strcmp(name, "current")) {
+		error = -EINVAL;
 		if (sid == 0)
-			return -EINVAL;
-		/*
-		 * SELinux allows to change context in the following case only.
-		 *  - Single threaded processes.
-		 *  - Multi threaded processes intend to change its context into
-		 *    more restricted domain (defined by TYPEBOUNDS statement).
-		 */
-		if (atomic_read(&p->mm->mm_users) != 1) {
-			struct task_struct *g, *t;
-			struct mm_struct *mm = p->mm;
-			read_lock(&tasklist_lock);
-			do_each_thread(g, t) {
-				if (t->mm == mm && t != p) {
-					read_unlock(&tasklist_lock);
-					error = security_bounded_transition(tsec->sid, sid);
-					if (!error)
-						goto boundary_ok;
+			goto abort_change;
 
-					return error;
-				}
-			} while_each_thread(g, t);
-			read_unlock(&tasklist_lock);
+		/* Only allow single threaded processes to change context */
+		error = -EPERM;
+		if (!is_single_threaded(p)) {
+			error = security_bounded_transition(tsec->sid, sid);
+			if (error)
+				goto abort_change;
 		}
-boundary_ok:
 
 		/* Check permissions for the transition. */
 		error = avc_has_perm(tsec->sid, sid, SECCLASS_PROCESS,
 				     PROCESS__DYNTRANSITION, NULL);
 		if (error)
-			return error;
+			goto abort_change;
 
 		/* Check for ptracing, and update the task SID if ok.
 		   Otherwise, leave SID unchanged and fail. */
+		ptsid = 0;
 		task_lock(p);
-		rcu_read_lock();
 		tracer = tracehook_tracer_task(p);
-		if (tracer != NULL) {
-			struct task_security_struct *ptsec = tracer->security;
-			u32 ptsid = ptsec->sid;
-			rcu_read_unlock();
-			error = avc_has_perm_noaudit(ptsid, sid,
-						     SECCLASS_PROCESS,
-						     PROCESS__PTRACE, 0, &avd);
-			if (!error)
-				tsec->sid = sid;
-			task_unlock(p);
-			avc_audit(ptsid, sid, SECCLASS_PROCESS,
-				  PROCESS__PTRACE, &avd, error, NULL);
-			if (error)
-				return error;
-		} else {
-			rcu_read_unlock();
-			tsec->sid = sid;
-			task_unlock(p);
-		}
-	} else
-		return -EINVAL;
+		if (tracer)
+			ptsid = task_sid(tracer);
+		task_unlock(p);
 
+		if (tracer) {
+			error = avc_has_perm(ptsid, sid, SECCLASS_PROCESS,
+					     PROCESS__PTRACE, NULL);
+			if (error)
+				goto abort_change;
+		}
+
+		tsec->sid = sid;
+	} else {
+		error = -EINVAL;
+		goto abort_change;
+	}
+
+	commit_creds(new);
 	return size;
+
+abort_change:
+	abort_creds(new);
+	return error;
 }
 
 static int selinux_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
@@ -5401,22 +5489,23 @@
 
 #ifdef CONFIG_KEYS
 
-static int selinux_key_alloc(struct key *k, struct task_struct *tsk,
+static int selinux_key_alloc(struct key *k, const struct cred *cred,
 			     unsigned long flags)
 {
-	struct task_security_struct *tsec = tsk->security;
+	const struct task_security_struct *tsec;
 	struct key_security_struct *ksec;
 
 	ksec = kzalloc(sizeof(struct key_security_struct), GFP_KERNEL);
 	if (!ksec)
 		return -ENOMEM;
 
+	tsec = cred->security;
 	if (tsec->keycreate_sid)
 		ksec->sid = tsec->keycreate_sid;
 	else
 		ksec->sid = tsec->sid;
-	k->security = ksec;
 
+	k->security = ksec;
 	return 0;
 }
 
@@ -5429,17 +5518,12 @@
 }
 
 static int selinux_key_permission(key_ref_t key_ref,
-			    struct task_struct *ctx,
-			    key_perm_t perm)
+				  const struct cred *cred,
+				  key_perm_t perm)
 {
 	struct key *key;
-	struct task_security_struct *tsec;
 	struct key_security_struct *ksec;
-
-	key = key_ref_to_ptr(key_ref);
-
-	tsec = ctx->security;
-	ksec = key->security;
+	u32 sid;
 
 	/* if no specific permissions are requested, we skip the
 	   permission check. No serious, additional covert channels
@@ -5447,8 +5531,12 @@
 	if (perm == 0)
 		return 0;
 
-	return avc_has_perm(tsec->sid, ksec->sid,
-			    SECCLASS_KEY, perm, NULL);
+	sid = cred_sid(cred);
+
+	key = key_ref_to_ptr(key_ref);
+	ksec = key->security;
+
+	return avc_has_perm(sid, ksec->sid, SECCLASS_KEY, perm, NULL);
 }
 
 static int selinux_key_getsecurity(struct key *key, char **_buffer)
@@ -5473,8 +5561,7 @@
 	.ptrace_may_access =		selinux_ptrace_may_access,
 	.ptrace_traceme =		selinux_ptrace_traceme,
 	.capget =			selinux_capget,
-	.capset_check =			selinux_capset_check,
-	.capset_set =			selinux_capset_set,
+	.capset =			selinux_capset,
 	.sysctl =			selinux_sysctl,
 	.capable =			selinux_capable,
 	.quotactl =			selinux_quotactl,
@@ -5485,12 +5572,10 @@
 	.netlink_send =			selinux_netlink_send,
 	.netlink_recv =			selinux_netlink_recv,
 
-	.bprm_alloc_security =		selinux_bprm_alloc_security,
-	.bprm_free_security =		selinux_bprm_free_security,
-	.bprm_apply_creds =		selinux_bprm_apply_creds,
-	.bprm_post_apply_creds =	selinux_bprm_post_apply_creds,
-	.bprm_set_security =		selinux_bprm_set_security,
+	.bprm_set_creds =		selinux_bprm_set_creds,
 	.bprm_check_security =		selinux_bprm_check_security,
+	.bprm_committing_creds =	selinux_bprm_committing_creds,
+	.bprm_committed_creds =		selinux_bprm_committed_creds,
 	.bprm_secureexec =		selinux_bprm_secureexec,
 
 	.sb_alloc_security =		selinux_sb_alloc_security,
@@ -5549,10 +5634,13 @@
 	.dentry_open =			selinux_dentry_open,
 
 	.task_create =			selinux_task_create,
-	.task_alloc_security =		selinux_task_alloc_security,
-	.task_free_security =		selinux_task_free_security,
+	.cred_free =			selinux_cred_free,
+	.cred_prepare =			selinux_cred_prepare,
+	.cred_commit =			selinux_cred_commit,
+	.kernel_act_as =		selinux_kernel_act_as,
+	.kernel_create_files_as =	selinux_kernel_create_files_as,
 	.task_setuid =			selinux_task_setuid,
-	.task_post_setuid =		selinux_task_post_setuid,
+	.task_fix_setuid =		selinux_task_fix_setuid,
 	.task_setgid =			selinux_task_setgid,
 	.task_setpgid =			selinux_task_setpgid,
 	.task_getpgid =			selinux_task_getpgid,
@@ -5569,7 +5657,6 @@
 	.task_kill =			selinux_task_kill,
 	.task_wait =			selinux_task_wait,
 	.task_prctl =			selinux_task_prctl,
-	.task_reparent_to_init =	selinux_task_reparent_to_init,
 	.task_to_inode =		selinux_task_to_inode,
 
 	.ipc_permission =		selinux_ipc_permission,
@@ -5665,8 +5752,6 @@
 
 static __init int selinux_init(void)
 {
-	struct task_security_struct *tsec;
-
 	if (!security_module_enable(&selinux_ops)) {
 		selinux_enabled = 0;
 		return 0;
@@ -5680,10 +5765,7 @@
 	printk(KERN_INFO "SELinux:  Initializing.\n");
 
 	/* Set the security state for the initial task. */
-	if (task_alloc_security(current))
-		panic("SELinux:  Failed to initialize initial task.\n");
-	tsec = current->security;
-	tsec->osid = tsec->sid = SECINITSID_KERNEL;
+	cred_init_security();
 
 	sel_inode_cache = kmem_cache_create("selinux_inode_security",
 					    sizeof(struct inode_security_struct),
diff --git a/security/selinux/include/av_perm_to_string.h b/security/selinux/include/av_perm_to_string.h
index 1223b4f..c0c8854 100644
--- a/security/selinux/include/av_perm_to_string.h
+++ b/security/selinux/include/av_perm_to_string.h
@@ -176,3 +176,5 @@
    S_(SECCLASS_DCCP_SOCKET, DCCP_SOCKET__NAME_CONNECT, "name_connect")
    S_(SECCLASS_MEMPROTECT, MEMPROTECT__MMAP_ZERO, "mmap_zero")
    S_(SECCLASS_PEER, PEER__RECV, "recv")
+   S_(SECCLASS_KERNEL_SERVICE, KERNEL_SERVICE__USE_AS_OVERRIDE, "use_as_override")
+   S_(SECCLASS_KERNEL_SERVICE, KERNEL_SERVICE__CREATE_FILES_AS, "create_files_as")
diff --git a/security/selinux/include/av_permissions.h b/security/selinux/include/av_permissions.h
index c4c5116..0ba79fe 100644
--- a/security/selinux/include/av_permissions.h
+++ b/security/selinux/include/av_permissions.h
@@ -841,3 +841,5 @@
 #define DCCP_SOCKET__NAME_CONNECT                 0x00800000UL
 #define MEMPROTECT__MMAP_ZERO                     0x00000001UL
 #define PEER__RECV                                0x00000001UL
+#define KERNEL_SERVICE__USE_AS_OVERRIDE           0x00000001UL
+#define KERNEL_SERVICE__CREATE_FILES_AS           0x00000002UL
diff --git a/security/selinux/include/class_to_string.h b/security/selinux/include/class_to_string.h
index bd813c3..21ec786 100644
--- a/security/selinux/include/class_to_string.h
+++ b/security/selinux/include/class_to_string.h
@@ -72,3 +72,8 @@
     S_(NULL)
     S_("peer")
     S_("capability2")
+    S_(NULL)
+    S_(NULL)
+    S_(NULL)
+    S_(NULL)
+    S_("kernel_service")
diff --git a/security/selinux/include/flask.h b/security/selinux/include/flask.h
index febf886..882f27d 100644
--- a/security/selinux/include/flask.h
+++ b/security/selinux/include/flask.h
@@ -52,6 +52,7 @@
 #define SECCLASS_MEMPROTECT                              61
 #define SECCLASS_PEER                                    68
 #define SECCLASS_CAPABILITY2                             69
+#define SECCLASS_KERNEL_SERVICE                          74
 
 /*
  * Security identifier indices for initial entities
diff --git a/security/selinux/include/objsec.h b/security/selinux/include/objsec.h
index f8be8d7..3cc4516 100644
--- a/security/selinux/include/objsec.h
+++ b/security/selinux/include/objsec.h
@@ -77,17 +77,6 @@
 	u32 sid;	/* SID of IPC resource */
 };
 
-struct bprm_security_struct {
-	u32 sid;		/* SID for transformed process */
-	unsigned char set;
-
-	/*
-	 * unsafe is used to share failure information from bprm_apply_creds()
-	 * to bprm_post_apply_creds().
-	 */
-	char unsafe;
-};
-
 struct netif_security_struct {
 	int ifindex;			/* device index */
 	u32 sid;			/* SID for this interface */
diff --git a/security/selinux/nlmsgtab.c b/security/selinux/nlmsgtab.c
index ff59c0c..4ed7bab 100644
--- a/security/selinux/nlmsgtab.c
+++ b/security/selinux/nlmsgtab.c
@@ -63,6 +63,9 @@
 	{ RTM_GETANYCAST,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
 	{ RTM_GETNEIGHTBL,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
 	{ RTM_SETNEIGHTBL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_NEWADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_DELADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_WRITE },
+	{ RTM_GETADDRLABEL,	NETLINK_ROUTE_SOCKET__NLMSG_READ  },
 };
 
 static struct nlmsg_perm nlmsg_firewall_perms[] =
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 69c9dcc..c863036 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -95,13 +95,18 @@
 static int task_has_security(struct task_struct *tsk,
 			     u32 perms)
 {
-	struct task_security_struct *tsec;
+	const struct task_security_struct *tsec;
+	u32 sid = 0;
 
-	tsec = tsk->security;
+	rcu_read_lock();
+	tsec = __task_cred(tsk)->security;
+	if (tsec)
+		sid = tsec->sid;
+	rcu_read_unlock();
 	if (!tsec)
 		return -EACCES;
 
-	return avc_has_perm(tsec->sid, SECINITSID_SECURITY,
+	return avc_has_perm(sid, SECINITSID_SECURITY,
 			    SECCLASS_SECURITY, perms, NULL);
 }
 
diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index 8f17f54..c0eb720 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -197,7 +197,7 @@
 	struct xfrm_user_sec_ctx *uctx, u32 sid)
 {
 	int rc = 0;
-	struct task_security_struct *tsec = current->security;
+	const struct task_security_struct *tsec = current_security();
 	struct xfrm_sec_ctx *ctx = NULL;
 	char *ctx_str = NULL;
 	u32 str_len;
@@ -333,7 +333,7 @@
  */
 int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
 {
-	struct task_security_struct *tsec = current->security;
+	const struct task_security_struct *tsec = current_security();
 	int rc = 0;
 
 	if (ctx) {
@@ -378,7 +378,7 @@
   */
 int selinux_xfrm_state_delete(struct xfrm_state *x)
 {
-	struct task_security_struct *tsec = current->security;
+	const struct task_security_struct *tsec = current_security();
 	struct xfrm_sec_ctx *ctx = x->security;
 	int rc = 0;
 
diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c
index 79ff21e..247cec3 100644
--- a/security/smack/smack_access.c
+++ b/security/smack/smack_access.c
@@ -164,7 +164,7 @@
 {
 	int rc;
 
-	rc = smk_access(current->security, obj_label, mode);
+	rc = smk_access(current_security(), obj_label, mode);
 	if (rc == 0)
 		return 0;
 
@@ -173,7 +173,7 @@
 	 * only one that gets privilege and current does not
 	 * have that label.
 	 */
-	if (smack_onlycap != NULL && smack_onlycap != current->security)
+	if (smack_onlycap != NULL && smack_onlycap != current->cred->security)
 		return rc;
 
 	if (capable(CAP_MAC_OVERRIDE))
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 6e2dc0b..8ad4816 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -30,6 +30,8 @@
 
 #include "smack.h"
 
+#define task_security(task)	(task_cred_xxx((task), security))
+
 /*
  * I hope these are the hokeyist lines of code in the module. Casey.
  */
@@ -102,7 +104,7 @@
 	if (rc != 0)
 		return rc;
 
-	rc = smk_access(current->security, ctp->security, MAY_READWRITE);
+	rc = smk_access(current_security(), task_security(ctp), MAY_READWRITE);
 	if (rc != 0 && capable(CAP_MAC_OVERRIDE))
 		return 0;
 	return rc;
@@ -124,7 +126,7 @@
 	if (rc != 0)
 		return rc;
 
-	rc = smk_access(ptp->security, current->security, MAY_READWRITE);
+	rc = smk_access(task_security(ptp), current_security(), MAY_READWRITE);
 	if (rc != 0 && has_capability(ptp, CAP_MAC_OVERRIDE))
 		return 0;
 	return rc;
@@ -141,7 +143,7 @@
 static int smack_syslog(int type)
 {
 	int rc;
-	char *sp = current->security;
+	char *sp = current_security();
 
 	rc = cap_syslog(type);
 	if (rc != 0)
@@ -373,7 +375,7 @@
  */
 static int smack_inode_alloc_security(struct inode *inode)
 {
-	inode->i_security = new_inode_smack(current->security);
+	inode->i_security = new_inode_smack(current_security());
 	if (inode->i_security == NULL)
 		return -ENOMEM;
 	return 0;
@@ -818,7 +820,7 @@
  */
 static int smack_file_alloc_security(struct file *file)
 {
-	file->f_security = current->security;
+	file->f_security = current_security();
 	return 0;
 }
 
@@ -916,7 +918,7 @@
  */
 static int smack_file_set_fowner(struct file *file)
 {
-	file->f_security = current->security;
+	file->f_security = current_security();
 	return 0;
 }
 
@@ -941,7 +943,7 @@
 	 * struct fown_struct is never outside the context of a struct file
 	 */
 	file = container_of(fown, struct file, f_owner);
-	rc = smk_access(file->f_security, tsk->security, MAY_WRITE);
+	rc = smk_access(file->f_security, tsk->cred->security, MAY_WRITE);
 	if (rc != 0 && has_capability(tsk, CAP_MAC_OVERRIDE))
 		return 0;
 	return rc;
@@ -973,33 +975,75 @@
  */
 
 /**
- * smack_task_alloc_security - "allocate" a task blob
- * @tsk: the task in need of a blob
- *
- * Smack isn't using copies of blobs. Everyone
- * points to an immutable list. No alloc required.
- * No data copy required.
- *
- * Always returns 0
- */
-static int smack_task_alloc_security(struct task_struct *tsk)
-{
-	tsk->security = current->security;
-
-	return 0;
-}
-
-/**
- * smack_task_free_security - "free" a task blob
- * @task: the task with the blob
+ * smack_cred_free - "free" task-level security credentials
+ * @cred: the credentials in question
  *
  * Smack isn't using copies of blobs. Everyone
  * points to an immutable list. The blobs never go away.
  * There is no leak here.
  */
-static void smack_task_free_security(struct task_struct *task)
+static void smack_cred_free(struct cred *cred)
 {
-	task->security = NULL;
+	cred->security = NULL;
+}
+
+/**
+ * smack_cred_prepare - prepare new set of credentials for modification
+ * @new: the new credentials
+ * @old: the original credentials
+ * @gfp: the atomicity of any memory allocations
+ *
+ * Prepare a new set of credentials for modification.
+ */
+static int smack_cred_prepare(struct cred *new, const struct cred *old,
+			      gfp_t gfp)
+{
+	new->security = old->security;
+	return 0;
+}
+
+/*
+ * commit new credentials
+ * @new: the new credentials
+ * @old: the original credentials
+ */
+static void smack_cred_commit(struct cred *new, const struct cred *old)
+{
+}
+
+/**
+ * smack_kernel_act_as - Set the subjective context in a set of credentials
+ * @new points to the set of credentials to be modified.
+ * @secid specifies the security ID to be set
+ *
+ * Set the security data for a kernel service.
+ */
+static int smack_kernel_act_as(struct cred *new, u32 secid)
+{
+	char *smack = smack_from_secid(secid);
+
+	if (smack == NULL)
+		return -EINVAL;
+
+	new->security = smack;
+	return 0;
+}
+
+/**
+ * smack_kernel_create_files_as - Set the file creation label in a set of creds
+ * @new points to the set of credentials to be modified
+ * @inode points to the inode to use as a reference
+ *
+ * Set the file creation context in a set of credentials to the same
+ * as the objective context of the specified inode
+ */
+static int smack_kernel_create_files_as(struct cred *new,
+					struct inode *inode)
+{
+	struct inode_smack *isp = inode->i_security;
+
+	new->security = isp->smk_inode;
+	return 0;
 }
 
 /**
@@ -1011,7 +1055,7 @@
  */
 static int smack_task_setpgid(struct task_struct *p, pid_t pgid)
 {
-	return smk_curacc(p->security, MAY_WRITE);
+	return smk_curacc(task_security(p), MAY_WRITE);
 }
 
 /**
@@ -1022,7 +1066,7 @@
  */
 static int smack_task_getpgid(struct task_struct *p)
 {
-	return smk_curacc(p->security, MAY_READ);
+	return smk_curacc(task_security(p), MAY_READ);
 }
 
 /**
@@ -1033,7 +1077,7 @@
  */
 static int smack_task_getsid(struct task_struct *p)
 {
-	return smk_curacc(p->security, MAY_READ);
+	return smk_curacc(task_security(p), MAY_READ);
 }
 
 /**
@@ -1045,7 +1089,7 @@
  */
 static void smack_task_getsecid(struct task_struct *p, u32 *secid)
 {
-	*secid = smack_to_secid(p->security);
+	*secid = smack_to_secid(task_security(p));
 }
 
 /**
@@ -1061,7 +1105,7 @@
 
 	rc = cap_task_setnice(p, nice);
 	if (rc == 0)
-		rc = smk_curacc(p->security, MAY_WRITE);
+		rc = smk_curacc(task_security(p), MAY_WRITE);
 	return rc;
 }
 
@@ -1078,7 +1122,7 @@
 
 	rc = cap_task_setioprio(p, ioprio);
 	if (rc == 0)
-		rc = smk_curacc(p->security, MAY_WRITE);
+		rc = smk_curacc(task_security(p), MAY_WRITE);
 	return rc;
 }
 
@@ -1090,7 +1134,7 @@
  */
 static int smack_task_getioprio(struct task_struct *p)
 {
-	return smk_curacc(p->security, MAY_READ);
+	return smk_curacc(task_security(p), MAY_READ);
 }
 
 /**
@@ -1108,7 +1152,7 @@
 
 	rc = cap_task_setscheduler(p, policy, lp);
 	if (rc == 0)
-		rc = smk_curacc(p->security, MAY_WRITE);
+		rc = smk_curacc(task_security(p), MAY_WRITE);
 	return rc;
 }
 
@@ -1120,7 +1164,7 @@
  */
 static int smack_task_getscheduler(struct task_struct *p)
 {
-	return smk_curacc(p->security, MAY_READ);
+	return smk_curacc(task_security(p), MAY_READ);
 }
 
 /**
@@ -1131,7 +1175,7 @@
  */
 static int smack_task_movememory(struct task_struct *p)
 {
-	return smk_curacc(p->security, MAY_WRITE);
+	return smk_curacc(task_security(p), MAY_WRITE);
 }
 
 /**
@@ -1154,13 +1198,13 @@
 	 * can write the receiver.
 	 */
 	if (secid == 0)
-		return smk_curacc(p->security, MAY_WRITE);
+		return smk_curacc(task_security(p), MAY_WRITE);
 	/*
 	 * If the secid isn't 0 we're dealing with some USB IO
 	 * specific behavior. This is not clean. For one thing
 	 * we can't take privilege into account.
 	 */
-	return smk_access(smack_from_secid(secid), p->security, MAY_WRITE);
+	return smk_access(smack_from_secid(secid), task_security(p), MAY_WRITE);
 }
 
 /**
@@ -1173,7 +1217,7 @@
 {
 	int rc;
 
-	rc = smk_access(current->security, p->security, MAY_WRITE);
+	rc = smk_access(current_security(), task_security(p), MAY_WRITE);
 	if (rc == 0)
 		return 0;
 
@@ -1204,7 +1248,7 @@
 static void smack_task_to_inode(struct task_struct *p, struct inode *inode)
 {
 	struct inode_smack *isp = inode->i_security;
-	isp->smk_inode = p->security;
+	isp->smk_inode = task_security(p);
 }
 
 /*
@@ -1223,7 +1267,7 @@
  */
 static int smack_sk_alloc_security(struct sock *sk, int family, gfp_t gfp_flags)
 {
-	char *csp = current->security;
+	char *csp = current_security();
 	struct socket_smack *ssp;
 
 	ssp = kzalloc(sizeof(struct socket_smack), gfp_flags);
@@ -1448,7 +1492,7 @@
  */
 static int smack_msg_msg_alloc_security(struct msg_msg *msg)
 {
-	msg->security = current->security;
+	msg->security = current_security();
 	return 0;
 }
 
@@ -1484,7 +1528,7 @@
 {
 	struct kern_ipc_perm *isp = &shp->shm_perm;
 
-	isp->security = current->security;
+	isp->security = current_security();
 	return 0;
 }
 
@@ -1593,7 +1637,7 @@
 {
 	struct kern_ipc_perm *isp = &sma->sem_perm;
 
-	isp->security = current->security;
+	isp->security = current_security();
 	return 0;
 }
 
@@ -1697,7 +1741,7 @@
 {
 	struct kern_ipc_perm *kisp = &msq->q_perm;
 
-	kisp->security = current->security;
+	kisp->security = current_security();
 	return 0;
 }
 
@@ -1852,7 +1896,7 @@
 	struct super_block *sbp;
 	struct superblock_smack *sbsp;
 	struct inode_smack *isp;
-	char *csp = current->security;
+	char *csp = current_security();
 	char *fetched;
 	char *final;
 	struct dentry *dp;
@@ -2009,7 +2053,7 @@
 	if (strcmp(name, "current") != 0)
 		return -EINVAL;
 
-	cp = kstrdup(p->security, GFP_KERNEL);
+	cp = kstrdup(task_security(p), GFP_KERNEL);
 	if (cp == NULL)
 		return -ENOMEM;
 
@@ -2033,6 +2077,7 @@
 static int smack_setprocattr(struct task_struct *p, char *name,
 			     void *value, size_t size)
 {
+	struct cred *new;
 	char *newsmack;
 
 	/*
@@ -2055,7 +2100,11 @@
 	if (newsmack == NULL)
 		return -EINVAL;
 
-	p->security = newsmack;
+	new = prepare_creds();
+	if (!new)
+		return -ENOMEM;
+	new->security = newsmack;
+	commit_creds(new);
 	return size;
 }
 
@@ -2288,8 +2337,7 @@
 		return;
 
 	ssp = sk->sk_security;
-	ssp->smk_in = current->security;
-	ssp->smk_out = current->security;
+	ssp->smk_in = ssp->smk_out = current_security();
 	ssp->smk_packet[0] = '\0';
 
 	rc = smack_netlabel(sk);
@@ -2352,17 +2400,17 @@
 /**
  * smack_key_alloc - Set the key security blob
  * @key: object
- * @tsk: the task associated with the key
+ * @cred: the credentials to use
  * @flags: unused
  *
  * No allocation required
  *
  * Returns 0
  */
-static int smack_key_alloc(struct key *key, struct task_struct *tsk,
+static int smack_key_alloc(struct key *key, const struct cred *cred,
 			   unsigned long flags)
 {
-	key->security = tsk->security;
+	key->security = cred->security;
 	return 0;
 }
 
@@ -2380,14 +2428,14 @@
 /*
  * smack_key_permission - Smack access on a key
  * @key_ref: gets to the object
- * @context: task involved
+ * @cred: the credentials to use
  * @perm: unused
  *
  * Return 0 if the task has read and write to the object,
  * an error code otherwise
  */
 static int smack_key_permission(key_ref_t key_ref,
-				struct task_struct *context, key_perm_t perm)
+				const struct cred *cred, key_perm_t perm)
 {
 	struct key *keyp;
 
@@ -2403,10 +2451,10 @@
 	/*
 	 * This should not occur
 	 */
-	if (context->security == NULL)
+	if (cred->security == NULL)
 		return -EACCES;
 
-	return smk_access(context->security, keyp->security, MAY_READWRITE);
+	return smk_access(cred->security, keyp->security, MAY_READWRITE);
 }
 #endif /* CONFIG_KEYS */
 
@@ -2577,15 +2625,13 @@
 	.ptrace_may_access =		smack_ptrace_may_access,
 	.ptrace_traceme =		smack_ptrace_traceme,
 	.capget = 			cap_capget,
-	.capset_check = 		cap_capset_check,
-	.capset_set = 			cap_capset_set,
+	.capset = 			cap_capset,
 	.capable = 			cap_capable,
 	.syslog = 			smack_syslog,
 	.settime = 			cap_settime,
 	.vm_enough_memory = 		cap_vm_enough_memory,
 
-	.bprm_apply_creds = 		cap_bprm_apply_creds,
-	.bprm_set_security = 		cap_bprm_set_security,
+	.bprm_set_creds = 		cap_bprm_set_creds,
 	.bprm_secureexec = 		cap_bprm_secureexec,
 
 	.sb_alloc_security = 		smack_sb_alloc_security,
@@ -2627,9 +2673,12 @@
 	.file_send_sigiotask = 		smack_file_send_sigiotask,
 	.file_receive = 		smack_file_receive,
 
-	.task_alloc_security = 		smack_task_alloc_security,
-	.task_free_security = 		smack_task_free_security,
-	.task_post_setuid =		cap_task_post_setuid,
+	.cred_free =			smack_cred_free,
+	.cred_prepare =			smack_cred_prepare,
+	.cred_commit =			smack_cred_commit,
+	.kernel_act_as =		smack_kernel_act_as,
+	.kernel_create_files_as =	smack_kernel_create_files_as,
+	.task_fix_setuid =		cap_task_fix_setuid,
 	.task_setpgid = 		smack_task_setpgid,
 	.task_getpgid = 		smack_task_getpgid,
 	.task_getsid = 			smack_task_getsid,
@@ -2642,7 +2691,6 @@
 	.task_movememory = 		smack_task_movememory,
 	.task_kill = 			smack_task_kill,
 	.task_wait = 			smack_task_wait,
-	.task_reparent_to_init =	cap_task_reparent_to_init,
 	.task_to_inode = 		smack_task_to_inode,
 	.task_prctl =			cap_task_prctl,
 
@@ -2718,6 +2766,8 @@
  */
 static __init int smack_init(void)
 {
+	struct cred *cred;
+
 	if (!security_module_enable(&smack_ops))
 		return 0;
 
@@ -2726,7 +2776,8 @@
 	/*
 	 * Set the security state for the initial task.
 	 */
-	current->security = &smack_known_floor.smk_known;
+	cred = (struct cred *) current->cred;
+	cred->security = &smack_known_floor.smk_known;
 
 	/*
 	 * Initialize locks
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index c21d8c8..ca257df 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -336,7 +336,7 @@
 
 	audit_info.loginuid = audit_get_loginuid(current);
 	audit_info.sessionid = audit_get_sessionid(current);
-	audit_info.secid = smack_to_secid(current->security);
+	audit_info.secid = smack_to_secid(current_security());
 
 	rc = netlbl_cfg_map_del(NULL, &audit_info);
 	if (rc != 0)
@@ -371,7 +371,7 @@
 
 	audit_info.loginuid = audit_get_loginuid(current);
 	audit_info.sessionid = audit_get_sessionid(current);
-	audit_info.secid = smack_to_secid(current->security);
+	audit_info.secid = smack_to_secid(current_security());
 
 	if (oldambient != NULL) {
 		rc = netlbl_cfg_map_del(oldambient, &audit_info);
@@ -843,7 +843,7 @@
 				 size_t count, loff_t *ppos)
 {
 	char in[SMK_LABELLEN];
-	char *sp = current->security;
+	char *sp = current->cred->security;
 
 	if (!capable(CAP_MAC_ADMIN))
 		return -EPERM;