| /* |
| * Security plug functions |
| * |
| * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> |
| * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> |
| * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> |
| * Copyright (C) 2016 Mellanox Technologies |
| * |
| * 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. |
| */ |
| |
| #include <linux/bpf.h> |
| #include <linux/capability.h> |
| #include <linux/dcache.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/lsm_hooks.h> |
| #include <linux/integrity.h> |
| #include <linux/ima.h> |
| #include <linux/evm.h> |
| #include <linux/fsnotify.h> |
| #include <linux/mman.h> |
| #include <linux/mount.h> |
| #include <linux/personality.h> |
| #include <linux/backing-dev.h> |
| #include <linux/string.h> |
| #include <net/flow.h> |
| |
| #define MAX_LSM_EVM_XATTR 2 |
| |
| /* Maximum number of letters for an LSM name string */ |
| #define SECURITY_NAME_MAX 10 |
| |
| struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
| static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain); |
| |
| char *lsm_names; |
| /* Boot-time LSM user choice */ |
| static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = |
| CONFIG_DEFAULT_SECURITY; |
| |
| static void __init do_security_initcalls(void) |
| { |
| initcall_t *call; |
| call = __security_initcall_start; |
| while (call < __security_initcall_end) { |
| (*call) (); |
| call++; |
| } |
| } |
| |
| /** |
| * security_init - initializes the security framework |
| * |
| * This should be called early in the kernel initialization sequence. |
| */ |
| int __init security_init(void) |
| { |
| int i; |
| struct list_head *list = (struct list_head *) &security_hook_heads; |
| |
| for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head); |
| i++) |
| INIT_LIST_HEAD(&list[i]); |
| pr_info("Security Framework initialized\n"); |
| |
| /* |
| * Load minor LSMs, with the capability module always first. |
| */ |
| capability_add_hooks(); |
| yama_add_hooks(); |
| loadpin_add_hooks(); |
| |
| /* |
| * Load all the remaining security modules. |
| */ |
| do_security_initcalls(); |
| |
| return 0; |
| } |
| |
| /* Save user chosen LSM */ |
| static int __init choose_lsm(char *str) |
| { |
| strncpy(chosen_lsm, str, SECURITY_NAME_MAX); |
| return 1; |
| } |
| __setup("security=", choose_lsm); |
| |
| static bool match_last_lsm(const char *list, const char *lsm) |
| { |
| const char *last; |
| |
| if (WARN_ON(!list || !lsm)) |
| return false; |
| last = strrchr(list, ','); |
| if (last) |
| /* Pass the comma, strcmp() will check for '\0' */ |
| last++; |
| else |
| last = list; |
| return !strcmp(last, lsm); |
| } |
| |
| static int lsm_append(char *new, char **result) |
| { |
| char *cp; |
| |
| if (*result == NULL) { |
| *result = kstrdup(new, GFP_KERNEL); |
| if (*result == NULL) |
| return -ENOMEM; |
| } else { |
| /* Check if it is the last registered name */ |
| if (match_last_lsm(*result, new)) |
| return 0; |
| cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
| if (cp == NULL) |
| return -ENOMEM; |
| kfree(*result); |
| *result = cp; |
| } |
| return 0; |
| } |
| |
| /** |
| * security_module_enable - Load given security module on boot ? |
| * @module: the name of the module |
| * |
| * Each LSM must pass this method before registering its own operations |
| * to avoid security registration races. This method may also be used |
| * to check if your LSM is currently loaded during kernel initialization. |
| * |
| * Returns: |
| * |
| * true if: |
| * |
| * - The passed LSM is the one chosen by user at boot time, |
| * - or the passed LSM is configured as the default and the user did not |
| * choose an alternate LSM at boot time. |
| * |
| * Otherwise, return false. |
| */ |
| int __init security_module_enable(const char *module) |
| { |
| return !strcmp(module, chosen_lsm); |
| } |
| |
| /** |
| * security_add_hooks - Add a modules hooks to the hook lists. |
| * @hooks: the hooks to add |
| * @count: the number of hooks to add |
| * @lsm: the name of the security module |
| * |
| * Each LSM has to register its hooks with the infrastructure. |
| */ |
| void __init security_add_hooks(struct security_hook_list *hooks, int count, |
| char *lsm) |
| { |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| hooks[i].lsm = lsm; |
| list_add_tail_rcu(&hooks[i].list, hooks[i].head); |
| } |
| if (lsm_append(lsm, &lsm_names) < 0) |
| panic("%s - Cannot get early memory.\n", __func__); |
| } |
| |
| int call_lsm_notifier(enum lsm_event event, void *data) |
| { |
| return atomic_notifier_call_chain(&lsm_notifier_chain, event, data); |
| } |
| EXPORT_SYMBOL(call_lsm_notifier); |
| |
| int register_lsm_notifier(struct notifier_block *nb) |
| { |
| return atomic_notifier_chain_register(&lsm_notifier_chain, nb); |
| } |
| EXPORT_SYMBOL(register_lsm_notifier); |
| |
| int unregister_lsm_notifier(struct notifier_block *nb) |
| { |
| return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb); |
| } |
| EXPORT_SYMBOL(unregister_lsm_notifier); |
| |
| /* |
| * Hook list operation macros. |
| * |
| * call_void_hook: |
| * This is a hook that does not return a value. |
| * |
| * call_int_hook: |
| * This is a hook that returns a value. |
| */ |
| |
| #define call_void_hook(FUNC, ...) \ |
| do { \ |
| struct security_hook_list *P; \ |
| \ |
| list_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
| P->hook.FUNC(__VA_ARGS__); \ |
| } while (0) |
| |
| #define call_int_hook(FUNC, IRC, ...) ({ \ |
| int RC = IRC; \ |
| do { \ |
| struct security_hook_list *P; \ |
| \ |
| list_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
| RC = P->hook.FUNC(__VA_ARGS__); \ |
| if (RC != 0) \ |
| break; \ |
| } \ |
| } while (0); \ |
| RC; \ |
| }) |
| |
| /* Security operations */ |
| |
| int security_binder_set_context_mgr(struct task_struct *mgr) |
| { |
| return call_int_hook(binder_set_context_mgr, 0, mgr); |
| } |
| |
| int security_binder_transaction(struct task_struct *from, |
| struct task_struct *to) |
| { |
| return call_int_hook(binder_transaction, 0, from, to); |
| } |
| |
| int security_binder_transfer_binder(struct task_struct *from, |
| struct task_struct *to) |
| { |
| return call_int_hook(binder_transfer_binder, 0, from, to); |
| } |
| |
| int security_binder_transfer_file(struct task_struct *from, |
| struct task_struct *to, struct file *file) |
| { |
| return call_int_hook(binder_transfer_file, 0, from, to, file); |
| } |
| |
| int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
| { |
| return call_int_hook(ptrace_access_check, 0, child, mode); |
| } |
| |
| int security_ptrace_traceme(struct task_struct *parent) |
| { |
| return call_int_hook(ptrace_traceme, 0, parent); |
| } |
| |
| int security_capget(struct task_struct *target, |
| kernel_cap_t *effective, |
| kernel_cap_t *inheritable, |
| kernel_cap_t *permitted) |
| { |
| return call_int_hook(capget, 0, target, |
| effective, inheritable, 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 call_int_hook(capset, 0, new, old, |
| effective, inheritable, permitted); |
| } |
| |
| int security_capable(const struct cred *cred, struct user_namespace *ns, |
| int cap) |
| { |
| return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT); |
| } |
| |
| int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, |
| int cap) |
| { |
| return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT); |
| } |
| |
| int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
| { |
| return call_int_hook(quotactl, 0, cmds, type, id, sb); |
| } |
| |
| int security_quota_on(struct dentry *dentry) |
| { |
| return call_int_hook(quota_on, 0, dentry); |
| } |
| |
| int security_syslog(int type) |
| { |
| return call_int_hook(syslog, 0, type); |
| } |
| |
| int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
| { |
| return call_int_hook(settime, 0, ts, tz); |
| } |
| |
| int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
| { |
| struct security_hook_list *hp; |
| int cap_sys_admin = 1; |
| int rc; |
| |
| /* |
| * The module will respond with a positive value if |
| * it thinks the __vm_enough_memory() call should be |
| * made with the cap_sys_admin set. If all of the modules |
| * agree that it should be set it will. If any module |
| * thinks it should not be set it won't. |
| */ |
| list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
| rc = hp->hook.vm_enough_memory(mm, pages); |
| if (rc <= 0) { |
| cap_sys_admin = 0; |
| break; |
| } |
| } |
| return __vm_enough_memory(mm, pages, cap_sys_admin); |
| } |
| |
| int security_bprm_set_creds(struct linux_binprm *bprm) |
| { |
| return call_int_hook(bprm_set_creds, 0, bprm); |
| } |
| |
| int security_bprm_check(struct linux_binprm *bprm) |
| { |
| int ret; |
| |
| ret = call_int_hook(bprm_check_security, 0, bprm); |
| if (ret) |
| return ret; |
| return ima_bprm_check(bprm); |
| } |
| |
| void security_bprm_committing_creds(struct linux_binprm *bprm) |
| { |
| call_void_hook(bprm_committing_creds, bprm); |
| } |
| |
| void security_bprm_committed_creds(struct linux_binprm *bprm) |
| { |
| call_void_hook(bprm_committed_creds, bprm); |
| } |
| |
| int security_sb_alloc(struct super_block *sb) |
| { |
| return call_int_hook(sb_alloc_security, 0, sb); |
| } |
| |
| void security_sb_free(struct super_block *sb) |
| { |
| call_void_hook(sb_free_security, sb); |
| } |
| |
| int security_sb_copy_data(char *orig, char *copy) |
| { |
| return call_int_hook(sb_copy_data, 0, orig, copy); |
| } |
| EXPORT_SYMBOL(security_sb_copy_data); |
| |
| int security_sb_remount(struct super_block *sb, void *data) |
| { |
| return call_int_hook(sb_remount, 0, sb, data); |
| } |
| |
| int security_sb_kern_mount(struct super_block *sb, int flags, void *data) |
| { |
| return call_int_hook(sb_kern_mount, 0, sb, flags, data); |
| } |
| |
| int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
| { |
| return call_int_hook(sb_show_options, 0, m, sb); |
| } |
| |
| int security_sb_statfs(struct dentry *dentry) |
| { |
| return call_int_hook(sb_statfs, 0, dentry); |
| } |
| |
| int security_sb_mount(const char *dev_name, const struct path *path, |
| const char *type, unsigned long flags, void *data) |
| { |
| return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
| } |
| |
| int security_sb_umount(struct vfsmount *mnt, int flags) |
| { |
| return call_int_hook(sb_umount, 0, mnt, flags); |
| } |
| |
| int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
| { |
| return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
| } |
| |
| int security_sb_set_mnt_opts(struct super_block *sb, |
| struct security_mnt_opts *opts, |
| unsigned long kern_flags, |
| unsigned long *set_kern_flags) |
| { |
| return call_int_hook(sb_set_mnt_opts, |
| opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb, |
| opts, kern_flags, set_kern_flags); |
| } |
| EXPORT_SYMBOL(security_sb_set_mnt_opts); |
| |
| int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
| struct super_block *newsb, |
| unsigned long kern_flags, |
| unsigned long *set_kern_flags) |
| { |
| return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
| kern_flags, set_kern_flags); |
| } |
| EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
| |
| int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) |
| { |
| return call_int_hook(sb_parse_opts_str, 0, options, opts); |
| } |
| EXPORT_SYMBOL(security_sb_parse_opts_str); |
| |
| int security_inode_alloc(struct inode *inode) |
| { |
| inode->i_security = NULL; |
| return call_int_hook(inode_alloc_security, 0, inode); |
| } |
| |
| void security_inode_free(struct inode *inode) |
| { |
| integrity_inode_free(inode); |
| call_void_hook(inode_free_security, inode); |
| } |
| |
| int security_dentry_init_security(struct dentry *dentry, int mode, |
| const struct qstr *name, void **ctx, |
| u32 *ctxlen) |
| { |
| return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
| name, ctx, ctxlen); |
| } |
| EXPORT_SYMBOL(security_dentry_init_security); |
| |
| int security_dentry_create_files_as(struct dentry *dentry, int mode, |
| struct qstr *name, |
| const struct cred *old, struct cred *new) |
| { |
| return call_int_hook(dentry_create_files_as, 0, dentry, mode, |
| name, old, new); |
| } |
| EXPORT_SYMBOL(security_dentry_create_files_as); |
| |
| int security_inode_init_security(struct inode *inode, struct inode *dir, |
| const struct qstr *qstr, |
| const initxattrs initxattrs, void *fs_data) |
| { |
| struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
| struct xattr *lsm_xattr, *evm_xattr, *xattr; |
| int ret; |
| |
| if (unlikely(IS_PRIVATE(inode))) |
| return 0; |
| |
| if (!initxattrs) |
| return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
| dir, qstr, NULL, NULL, NULL); |
| memset(new_xattrs, 0, sizeof(new_xattrs)); |
| lsm_xattr = new_xattrs; |
| ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
| &lsm_xattr->name, |
| &lsm_xattr->value, |
| &lsm_xattr->value_len); |
| if (ret) |
| goto out; |
| |
| evm_xattr = lsm_xattr + 1; |
| ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); |
| if (ret) |
| goto out; |
| ret = initxattrs(inode, new_xattrs, fs_data); |
| out: |
| for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
| kfree(xattr->value); |
| return (ret == -EOPNOTSUPP) ? 0 : ret; |
| } |
| EXPORT_SYMBOL(security_inode_init_security); |
| |
| int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
| const struct qstr *qstr, const char **name, |
| void **value, size_t *len) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return -EOPNOTSUPP; |
| return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
| qstr, name, value, len); |
| } |
| EXPORT_SYMBOL(security_old_inode_init_security); |
| |
| #ifdef CONFIG_SECURITY_PATH |
| int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
| unsigned int dev) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| return 0; |
| return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
| } |
| EXPORT_SYMBOL(security_path_mknod); |
| |
| int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| return 0; |
| return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
| } |
| EXPORT_SYMBOL(security_path_mkdir); |
| |
| int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| return 0; |
| return call_int_hook(path_rmdir, 0, dir, dentry); |
| } |
| |
| int security_path_unlink(const struct path *dir, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| return 0; |
| return call_int_hook(path_unlink, 0, dir, dentry); |
| } |
| EXPORT_SYMBOL(security_path_unlink); |
| |
| int security_path_symlink(const struct path *dir, struct dentry *dentry, |
| const char *old_name) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
| return 0; |
| return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
| } |
| |
| int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
| struct dentry *new_dentry) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
| return 0; |
| return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
| } |
| |
| int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
| const struct path *new_dir, struct dentry *new_dentry, |
| unsigned int flags) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
| (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) |
| return 0; |
| |
| if (flags & RENAME_EXCHANGE) { |
| int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
| old_dir, old_dentry); |
| if (err) |
| return err; |
| } |
| |
| return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
| new_dentry); |
| } |
| EXPORT_SYMBOL(security_path_rename); |
| |
| int security_path_truncate(const struct path *path) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
| return 0; |
| return call_int_hook(path_truncate, 0, path); |
| } |
| |
| int security_path_chmod(const struct path *path, umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
| return 0; |
| return call_int_hook(path_chmod, 0, path, mode); |
| } |
| |
| int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
| return 0; |
| return call_int_hook(path_chown, 0, path, uid, gid); |
| } |
| EXPORT_SYMBOL(security_path_chown); |
| |
| int security_path_chroot(const struct path *path) |
| { |
| return call_int_hook(path_chroot, 0, path); |
| } |
| #endif |
| |
| int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| return call_int_hook(inode_create, 0, dir, dentry, mode); |
| } |
| EXPORT_SYMBOL_GPL(security_inode_create); |
| |
| int security_inode_link(struct dentry *old_dentry, struct inode *dir, |
| struct dentry *new_dentry) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
| return 0; |
| return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
| } |
| |
| int security_inode_unlink(struct inode *dir, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return 0; |
| return call_int_hook(inode_unlink, 0, dir, dentry); |
| } |
| |
| int security_inode_symlink(struct inode *dir, struct dentry *dentry, |
| const char *old_name) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
| } |
| |
| int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
| } |
| EXPORT_SYMBOL_GPL(security_inode_mkdir); |
| |
| int security_inode_rmdir(struct inode *dir, struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return 0; |
| return call_int_hook(inode_rmdir, 0, dir, dentry); |
| } |
| |
| int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
| { |
| if (unlikely(IS_PRIVATE(dir))) |
| return 0; |
| return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
| } |
| |
| int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, |
| struct inode *new_dir, struct dentry *new_dentry, |
| unsigned int flags) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
| (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) |
| return 0; |
| |
| if (flags & RENAME_EXCHANGE) { |
| int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
| old_dir, old_dentry); |
| if (err) |
| return err; |
| } |
| |
| return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
| new_dir, new_dentry); |
| } |
| |
| int security_inode_readlink(struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return 0; |
| return call_int_hook(inode_readlink, 0, dentry); |
| } |
| |
| int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
| bool rcu) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return 0; |
| return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
| } |
| |
| int security_inode_permission(struct inode *inode, int mask) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return 0; |
| return call_int_hook(inode_permission, 0, inode, mask); |
| } |
| |
| int security_inode_setattr(struct dentry *dentry, struct iattr *attr) |
| { |
| int ret; |
| |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return 0; |
| ret = call_int_hook(inode_setattr, 0, dentry, attr); |
| if (ret) |
| return ret; |
| return evm_inode_setattr(dentry, attr); |
| } |
| EXPORT_SYMBOL_GPL(security_inode_setattr); |
| |
| int security_inode_getattr(const struct path *path) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
| return 0; |
| return call_int_hook(inode_getattr, 0, path); |
| } |
| |
| int security_inode_setxattr(struct dentry *dentry, const char *name, |
| const void *value, size_t size, int flags) |
| { |
| int ret; |
| |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return 0; |
| /* |
| * SELinux and Smack integrate the cap call, |
| * so assume that all LSMs supplying this call do so. |
| */ |
| ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, |
| flags); |
| |
| if (ret == 1) |
| ret = cap_inode_setxattr(dentry, name, value, size, flags); |
| if (ret) |
| return ret; |
| ret = ima_inode_setxattr(dentry, name, value, size); |
| if (ret) |
| return ret; |
| return evm_inode_setxattr(dentry, name, value, size); |
| } |
| |
| void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
| const void *value, size_t size, int flags) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return; |
| call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
| evm_inode_post_setxattr(dentry, name, value, size); |
| } |
| |
| int security_inode_getxattr(struct dentry *dentry, const char *name) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return 0; |
| return call_int_hook(inode_getxattr, 0, dentry, name); |
| } |
| |
| int security_inode_listxattr(struct dentry *dentry) |
| { |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return 0; |
| return call_int_hook(inode_listxattr, 0, dentry); |
| } |
| |
| int security_inode_removexattr(struct dentry *dentry, const char *name) |
| { |
| int ret; |
| |
| if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
| return 0; |
| /* |
| * SELinux and Smack integrate the cap call, |
| * so assume that all LSMs supplying this call do so. |
| */ |
| ret = call_int_hook(inode_removexattr, 1, dentry, name); |
| if (ret == 1) |
| ret = cap_inode_removexattr(dentry, name); |
| if (ret) |
| return ret; |
| ret = ima_inode_removexattr(dentry, name); |
| if (ret) |
| return ret; |
| return evm_inode_removexattr(dentry, name); |
| } |
| |
| int security_inode_need_killpriv(struct dentry *dentry) |
| { |
| return call_int_hook(inode_need_killpriv, 0, dentry); |
| } |
| |
| int security_inode_killpriv(struct dentry *dentry) |
| { |
| return call_int_hook(inode_killpriv, 0, dentry); |
| } |
| |
| int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
| { |
| struct security_hook_list *hp; |
| int rc; |
| |
| if (unlikely(IS_PRIVATE(inode))) |
| return -EOPNOTSUPP; |
| /* |
| * Only one module will provide an attribute with a given name. |
| */ |
| list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
| rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); |
| if (rc != -EOPNOTSUPP) |
| return rc; |
| } |
| return -EOPNOTSUPP; |
| } |
| |
| int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) |
| { |
| struct security_hook_list *hp; |
| int rc; |
| |
| if (unlikely(IS_PRIVATE(inode))) |
| return -EOPNOTSUPP; |
| /* |
| * Only one module will provide an attribute with a given name. |
| */ |
| list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
| rc = hp->hook.inode_setsecurity(inode, name, value, size, |
| flags); |
| if (rc != -EOPNOTSUPP) |
| return rc; |
| } |
| return -EOPNOTSUPP; |
| } |
| |
| int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) |
| { |
| if (unlikely(IS_PRIVATE(inode))) |
| return 0; |
| return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
| } |
| EXPORT_SYMBOL(security_inode_listsecurity); |
| |
| void security_inode_getsecid(struct inode *inode, u32 *secid) |
| { |
| call_void_hook(inode_getsecid, inode, secid); |
| } |
| |
| int security_inode_copy_up(struct dentry *src, struct cred **new) |
| { |
| return call_int_hook(inode_copy_up, 0, src, new); |
| } |
| EXPORT_SYMBOL(security_inode_copy_up); |
| |
| int security_inode_copy_up_xattr(const char *name) |
| { |
| return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name); |
| } |
| EXPORT_SYMBOL(security_inode_copy_up_xattr); |
| |
| int security_file_permission(struct file *file, int mask) |
| { |
| int ret; |
| |
| ret = call_int_hook(file_permission, 0, file, mask); |
| if (ret) |
| return ret; |
| |
| return fsnotify_perm(file, mask); |
| } |
| |
| int security_file_alloc(struct file *file) |
| { |
| return call_int_hook(file_alloc_security, 0, file); |
| } |
| |
| void security_file_free(struct file *file) |
| { |
| call_void_hook(file_free_security, file); |
| } |
| |
| int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| { |
| return call_int_hook(file_ioctl, 0, file, cmd, arg); |
| } |
| |
| static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
| { |
| /* |
| * Does we have PROT_READ and does the application expect |
| * it to imply PROT_EXEC? If not, nothing to talk about... |
| */ |
| if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
| return prot; |
| if (!(current->personality & READ_IMPLIES_EXEC)) |
| return prot; |
| /* |
| * if that's an anonymous mapping, let it. |
| */ |
| if (!file) |
| return prot | PROT_EXEC; |
| /* |
| * ditto if it's not on noexec mount, except that on !MMU we need |
| * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
| */ |
| if (!path_noexec(&file->f_path)) { |
| #ifndef CONFIG_MMU |
| if (file->f_op->mmap_capabilities) { |
| unsigned caps = file->f_op->mmap_capabilities(file); |
| if (!(caps & NOMMU_MAP_EXEC)) |
| return prot; |
| } |
| #endif |
| return prot | PROT_EXEC; |
| } |
| /* anything on noexec mount won't get PROT_EXEC */ |
| return prot; |
| } |
| |
| int security_mmap_file(struct file *file, unsigned long prot, |
| unsigned long flags) |
| { |
| int ret; |
| ret = call_int_hook(mmap_file, 0, file, prot, |
| mmap_prot(file, prot), flags); |
| if (ret) |
| return ret; |
| return ima_file_mmap(file, prot); |
| } |
| |
| int security_mmap_addr(unsigned long addr) |
| { |
| return call_int_hook(mmap_addr, 0, addr); |
| } |
| |
| int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
| unsigned long prot) |
| { |
| return call_int_hook(file_mprotect, 0, vma, reqprot, prot); |
| } |
| |
| int security_file_lock(struct file *file, unsigned int cmd) |
| { |
| return call_int_hook(file_lock, 0, file, cmd); |
| } |
| |
| int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) |
| { |
| return call_int_hook(file_fcntl, 0, file, cmd, arg); |
| } |
| |
| void security_file_set_fowner(struct file *file) |
| { |
| call_void_hook(file_set_fowner, file); |
| } |
| |
| int security_file_send_sigiotask(struct task_struct *tsk, |
| struct fown_struct *fown, int sig) |
| { |
| return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
| } |
| |
| int security_file_receive(struct file *file) |
| { |
| return call_int_hook(file_receive, 0, file); |
| } |
| |
| int security_file_open(struct file *file, const struct cred *cred) |
| { |
| int ret; |
| |
| ret = call_int_hook(file_open, 0, file, cred); |
| if (ret) |
| return ret; |
| |
| return fsnotify_perm(file, MAY_OPEN); |
| } |
| |
| int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
| { |
| return call_int_hook(task_alloc, 0, task, clone_flags); |
| } |
| |
| void security_task_free(struct task_struct *task) |
| { |
| call_void_hook(task_free, task); |
| } |
| |
| int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
| { |
| return call_int_hook(cred_alloc_blank, 0, cred, gfp); |
| } |
| |
| void security_cred_free(struct cred *cred) |
| { |
| /* |
| * There is a failure case in prepare_creds() that |
| * may result in a call here with ->security being NULL. |
| */ |
| if (unlikely(cred->security == NULL)) |
| return; |
| |
| call_void_hook(cred_free, cred); |
| } |
| |
| int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
| { |
| return call_int_hook(cred_prepare, 0, new, old, gfp); |
| } |
| |
| void security_transfer_creds(struct cred *new, const struct cred *old) |
| { |
| call_void_hook(cred_transfer, new, old); |
| } |
| |
| int security_kernel_act_as(struct cred *new, u32 secid) |
| { |
| return call_int_hook(kernel_act_as, 0, new, secid); |
| } |
| |
| int security_kernel_create_files_as(struct cred *new, struct inode *inode) |
| { |
| return call_int_hook(kernel_create_files_as, 0, new, inode); |
| } |
| |
| int security_kernel_module_request(char *kmod_name) |
| { |
| return call_int_hook(kernel_module_request, 0, kmod_name); |
| } |
| |
| int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) |
| { |
| int ret; |
| |
| ret = call_int_hook(kernel_read_file, 0, file, id); |
| if (ret) |
| return ret; |
| return ima_read_file(file, id); |
| } |
| EXPORT_SYMBOL_GPL(security_kernel_read_file); |
| |
| int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
| enum kernel_read_file_id id) |
| { |
| int ret; |
| |
| ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); |
| if (ret) |
| return ret; |
| return ima_post_read_file(file, buf, size, id); |
| } |
| EXPORT_SYMBOL_GPL(security_kernel_post_read_file); |
| |
| int security_task_fix_setuid(struct cred *new, const struct cred *old, |
| int flags) |
| { |
| return call_int_hook(task_fix_setuid, 0, new, old, flags); |
| } |
| |
| int security_task_setpgid(struct task_struct *p, pid_t pgid) |
| { |
| return call_int_hook(task_setpgid, 0, p, pgid); |
| } |
| |
| int security_task_getpgid(struct task_struct *p) |
| { |
| return call_int_hook(task_getpgid, 0, p); |
| } |
| |
| int security_task_getsid(struct task_struct *p) |
| { |
| return call_int_hook(task_getsid, 0, p); |
| } |
| |
| void security_task_getsecid(struct task_struct *p, u32 *secid) |
| { |
| *secid = 0; |
| call_void_hook(task_getsecid, p, secid); |
| } |
| EXPORT_SYMBOL(security_task_getsecid); |
| |
| int security_task_setnice(struct task_struct *p, int nice) |
| { |
| return call_int_hook(task_setnice, 0, p, nice); |
| } |
| |
| int security_task_setioprio(struct task_struct *p, int ioprio) |
| { |
| return call_int_hook(task_setioprio, 0, p, ioprio); |
| } |
| |
| int security_task_getioprio(struct task_struct *p) |
| { |
| return call_int_hook(task_getioprio, 0, p); |
| } |
| |
| int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
| unsigned int flags) |
| { |
| return call_int_hook(task_prlimit, 0, cred, tcred, flags); |
| } |
| |
| int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
| struct rlimit *new_rlim) |
| { |
| return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
| } |
| |
| int security_task_setscheduler(struct task_struct *p) |
| { |
| return call_int_hook(task_setscheduler, 0, p); |
| } |
| |
| int security_task_getscheduler(struct task_struct *p) |
| { |
| return call_int_hook(task_getscheduler, 0, p); |
| } |
| |
| int security_task_movememory(struct task_struct *p) |
| { |
| return call_int_hook(task_movememory, 0, p); |
| } |
| |
| int security_task_kill(struct task_struct *p, struct siginfo *info, |
| int sig, u32 secid) |
| { |
| return call_int_hook(task_kill, 0, p, info, sig, secid); |
| } |
| |
| int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
| unsigned long arg4, unsigned long arg5) |
| { |
| int thisrc; |
| int rc = -ENOSYS; |
| struct security_hook_list *hp; |
| |
| list_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
| thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
| if (thisrc != -ENOSYS) { |
| rc = thisrc; |
| if (thisrc != 0) |
| break; |
| } |
| } |
| return rc; |
| } |
| |
| void security_task_to_inode(struct task_struct *p, struct inode *inode) |
| { |
| call_void_hook(task_to_inode, p, inode); |
| } |
| |
| int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) |
| { |
| return call_int_hook(ipc_permission, 0, ipcp, flag); |
| } |
| |
| void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
| { |
| *secid = 0; |
| call_void_hook(ipc_getsecid, ipcp, secid); |
| } |
| |
| int security_msg_msg_alloc(struct msg_msg *msg) |
| { |
| return call_int_hook(msg_msg_alloc_security, 0, msg); |
| } |
| |
| void security_msg_msg_free(struct msg_msg *msg) |
| { |
| call_void_hook(msg_msg_free_security, msg); |
| } |
| |
| int security_msg_queue_alloc(struct msg_queue *msq) |
| { |
| return call_int_hook(msg_queue_alloc_security, 0, msq); |
| } |
| |
| void security_msg_queue_free(struct msg_queue *msq) |
| { |
| call_void_hook(msg_queue_free_security, msq); |
| } |
| |
| int security_msg_queue_associate(struct msg_queue *msq, int msqflg) |
| { |
| return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
| } |
| |
| int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) |
| { |
| return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
| } |
| |
| int security_msg_queue_msgsnd(struct msg_queue *msq, |
| struct msg_msg *msg, int msqflg) |
| { |
| return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
| } |
| |
| int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, |
| struct task_struct *target, long type, int mode) |
| { |
| return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
| } |
| |
| int security_shm_alloc(struct shmid_kernel *shp) |
| { |
| return call_int_hook(shm_alloc_security, 0, shp); |
| } |
| |
| void security_shm_free(struct shmid_kernel *shp) |
| { |
| call_void_hook(shm_free_security, shp); |
| } |
| |
| int security_shm_associate(struct shmid_kernel *shp, int shmflg) |
| { |
| return call_int_hook(shm_associate, 0, shp, shmflg); |
| } |
| |
| int security_shm_shmctl(struct shmid_kernel *shp, int cmd) |
| { |
| return call_int_hook(shm_shmctl, 0, shp, cmd); |
| } |
| |
| int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) |
| { |
| return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
| } |
| |
| int security_sem_alloc(struct sem_array *sma) |
| { |
| return call_int_hook(sem_alloc_security, 0, sma); |
| } |
| |
| void security_sem_free(struct sem_array *sma) |
| { |
| call_void_hook(sem_free_security, sma); |
| } |
| |
| int security_sem_associate(struct sem_array *sma, int semflg) |
| { |
| return call_int_hook(sem_associate, 0, sma, semflg); |
| } |
| |
| int security_sem_semctl(struct sem_array *sma, int cmd) |
| { |
| return call_int_hook(sem_semctl, 0, sma, cmd); |
| } |
| |
| int security_sem_semop(struct sem_array *sma, struct sembuf *sops, |
| unsigned nsops, int alter) |
| { |
| return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
| } |
| |
| void security_d_instantiate(struct dentry *dentry, struct inode *inode) |
| { |
| if (unlikely(inode && IS_PRIVATE(inode))) |
| return; |
| call_void_hook(d_instantiate, dentry, inode); |
| } |
| EXPORT_SYMBOL(security_d_instantiate); |
| |
| int security_getprocattr(struct task_struct *p, char *name, char **value) |
| { |
| return call_int_hook(getprocattr, -EINVAL, p, name, value); |
| } |
| |
| int security_setprocattr(const char *name, void *value, size_t size) |
| { |
| return call_int_hook(setprocattr, -EINVAL, name, value, size); |
| } |
| |
| int security_netlink_send(struct sock *sk, struct sk_buff *skb) |
| { |
| return call_int_hook(netlink_send, 0, sk, skb); |
| } |
| |
| int security_ismaclabel(const char *name) |
| { |
| return call_int_hook(ismaclabel, 0, name); |
| } |
| EXPORT_SYMBOL(security_ismaclabel); |
| |
| int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
| { |
| return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, |
| seclen); |
| } |
| EXPORT_SYMBOL(security_secid_to_secctx); |
| |
| int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
| { |
| *secid = 0; |
| return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
| } |
| EXPORT_SYMBOL(security_secctx_to_secid); |
| |
| void security_release_secctx(char *secdata, u32 seclen) |
| { |
| call_void_hook(release_secctx, secdata, seclen); |
| } |
| EXPORT_SYMBOL(security_release_secctx); |
| |
| void security_inode_invalidate_secctx(struct inode *inode) |
| { |
| call_void_hook(inode_invalidate_secctx, inode); |
| } |
| EXPORT_SYMBOL(security_inode_invalidate_secctx); |
| |
| int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
| { |
| return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
| } |
| EXPORT_SYMBOL(security_inode_notifysecctx); |
| |
| int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) |
| { |
| return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
| } |
| EXPORT_SYMBOL(security_inode_setsecctx); |
| |
| int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) |
| { |
| return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
| } |
| EXPORT_SYMBOL(security_inode_getsecctx); |
| |
| #ifdef CONFIG_SECURITY_NETWORK |
| |
| int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
| { |
| return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
| } |
| EXPORT_SYMBOL(security_unix_stream_connect); |
| |
| int security_unix_may_send(struct socket *sock, struct socket *other) |
| { |
| return call_int_hook(unix_may_send, 0, sock, other); |
| } |
| EXPORT_SYMBOL(security_unix_may_send); |
| |
| int security_socket_create(int family, int type, int protocol, int kern) |
| { |
| return call_int_hook(socket_create, 0, family, type, protocol, kern); |
| } |
| |
| int security_socket_post_create(struct socket *sock, int family, |
| int type, int protocol, int kern) |
| { |
| return call_int_hook(socket_post_create, 0, sock, family, type, |
| protocol, kern); |
| } |
| |
| int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
| { |
| return call_int_hook(socket_bind, 0, sock, address, addrlen); |
| } |
| |
| int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) |
| { |
| return call_int_hook(socket_connect, 0, sock, address, addrlen); |
| } |
| |
| int security_socket_listen(struct socket *sock, int backlog) |
| { |
| return call_int_hook(socket_listen, 0, sock, backlog); |
| } |
| |
| int security_socket_accept(struct socket *sock, struct socket *newsock) |
| { |
| return call_int_hook(socket_accept, 0, sock, newsock); |
| } |
| |
| int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
| { |
| return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
| } |
| |
| int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, |
| int size, int flags) |
| { |
| return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
| } |
| |
| int security_socket_getsockname(struct socket *sock) |
| { |
| return call_int_hook(socket_getsockname, 0, sock); |
| } |
| |
| int security_socket_getpeername(struct socket *sock) |
| { |
| return call_int_hook(socket_getpeername, 0, sock); |
| } |
| |
| int security_socket_getsockopt(struct socket *sock, int level, int optname) |
| { |
| return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
| } |
| |
| int security_socket_setsockopt(struct socket *sock, int level, int optname) |
| { |
| return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
| } |
| |
| int security_socket_shutdown(struct socket *sock, int how) |
| { |
| return call_int_hook(socket_shutdown, 0, sock, how); |
| } |
| |
| int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) |
| { |
| return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
| } |
| EXPORT_SYMBOL(security_sock_rcv_skb); |
| |
| int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, |
| int __user *optlen, unsigned len) |
| { |
| return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
| optval, optlen, len); |
| } |
| |
| int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) |
| { |
| return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
| skb, secid); |
| } |
| EXPORT_SYMBOL(security_socket_getpeersec_dgram); |
| |
| int security_sk_alloc(struct sock *sk, int family, gfp_t priority) |
| { |
| return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
| } |
| |
| void security_sk_free(struct sock *sk) |
| { |
| call_void_hook(sk_free_security, sk); |
| } |
| |
| void security_sk_clone(const struct sock *sk, struct sock *newsk) |
| { |
| call_void_hook(sk_clone_security, sk, newsk); |
| } |
| EXPORT_SYMBOL(security_sk_clone); |
| |
| void security_sk_classify_flow(struct sock *sk, struct flowi *fl) |
| { |
| call_void_hook(sk_getsecid, sk, &fl->flowi_secid); |
| } |
| EXPORT_SYMBOL(security_sk_classify_flow); |
| |
| void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) |
| { |
| call_void_hook(req_classify_flow, req, fl); |
| } |
| EXPORT_SYMBOL(security_req_classify_flow); |
| |
| void security_sock_graft(struct sock *sk, struct socket *parent) |
| { |
| call_void_hook(sock_graft, sk, parent); |
| } |
| EXPORT_SYMBOL(security_sock_graft); |
| |
| int security_inet_conn_request(struct sock *sk, |
| struct sk_buff *skb, struct request_sock *req) |
| { |
| return call_int_hook(inet_conn_request, 0, sk, skb, req); |
| } |
| EXPORT_SYMBOL(security_inet_conn_request); |
| |
| void security_inet_csk_clone(struct sock *newsk, |
| const struct request_sock *req) |
| { |
| call_void_hook(inet_csk_clone, newsk, req); |
| } |
| |
| void security_inet_conn_established(struct sock *sk, |
| struct sk_buff *skb) |
| { |
| call_void_hook(inet_conn_established, sk, skb); |
| } |
| |
| int security_secmark_relabel_packet(u32 secid) |
| { |
| return call_int_hook(secmark_relabel_packet, 0, secid); |
| } |
| EXPORT_SYMBOL(security_secmark_relabel_packet); |
| |
| void security_secmark_refcount_inc(void) |
| { |
| call_void_hook(secmark_refcount_inc); |
| } |
| EXPORT_SYMBOL(security_secmark_refcount_inc); |
| |
| void security_secmark_refcount_dec(void) |
| { |
| call_void_hook(secmark_refcount_dec); |
| } |
| EXPORT_SYMBOL(security_secmark_refcount_dec); |
| |
| int security_tun_dev_alloc_security(void **security) |
| { |
| return call_int_hook(tun_dev_alloc_security, 0, security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_alloc_security); |
| |
| void security_tun_dev_free_security(void *security) |
| { |
| call_void_hook(tun_dev_free_security, security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_free_security); |
| |
| int security_tun_dev_create(void) |
| { |
| return call_int_hook(tun_dev_create, 0); |
| } |
| EXPORT_SYMBOL(security_tun_dev_create); |
| |
| int security_tun_dev_attach_queue(void *security) |
| { |
| return call_int_hook(tun_dev_attach_queue, 0, security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_attach_queue); |
| |
| int security_tun_dev_attach(struct sock *sk, void *security) |
| { |
| return call_int_hook(tun_dev_attach, 0, sk, security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_attach); |
| |
| int security_tun_dev_open(void *security) |
| { |
| return call_int_hook(tun_dev_open, 0, security); |
| } |
| EXPORT_SYMBOL(security_tun_dev_open); |
| |
| #endif /* CONFIG_SECURITY_NETWORK */ |
| |
| #ifdef CONFIG_SECURITY_INFINIBAND |
| |
| int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) |
| { |
| return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); |
| } |
| EXPORT_SYMBOL(security_ib_pkey_access); |
| |
| int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
| { |
| return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); |
| } |
| EXPORT_SYMBOL(security_ib_endport_manage_subnet); |
| |
| int security_ib_alloc_security(void **sec) |
| { |
| return call_int_hook(ib_alloc_security, 0, sec); |
| } |
| EXPORT_SYMBOL(security_ib_alloc_security); |
| |
| void security_ib_free_security(void *sec) |
| { |
| call_void_hook(ib_free_security, sec); |
| } |
| EXPORT_SYMBOL(security_ib_free_security); |
| #endif /* CONFIG_SECURITY_INFINIBAND */ |
| |
| #ifdef CONFIG_SECURITY_NETWORK_XFRM |
| |
| int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
| struct xfrm_user_sec_ctx *sec_ctx, |
| gfp_t gfp) |
| { |
| return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
| } |
| EXPORT_SYMBOL(security_xfrm_policy_alloc); |
| |
| int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
| struct xfrm_sec_ctx **new_ctxp) |
| { |
| return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
| } |
| |
| void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
| { |
| call_void_hook(xfrm_policy_free_security, ctx); |
| } |
| EXPORT_SYMBOL(security_xfrm_policy_free); |
| |
| int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
| { |
| return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
| } |
| |
| int security_xfrm_state_alloc(struct xfrm_state *x, |
| struct xfrm_user_sec_ctx *sec_ctx) |
| { |
| return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
| } |
| EXPORT_SYMBOL(security_xfrm_state_alloc); |
| |
| int security_xfrm_state_alloc_acquire(struct xfrm_state *x, |
| struct xfrm_sec_ctx *polsec, u32 secid) |
| { |
| return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
| } |
| |
| int security_xfrm_state_delete(struct xfrm_state *x) |
| { |
| return call_int_hook(xfrm_state_delete_security, 0, x); |
| } |
| EXPORT_SYMBOL(security_xfrm_state_delete); |
| |
| void security_xfrm_state_free(struct xfrm_state *x) |
| { |
| call_void_hook(xfrm_state_free_security, x); |
| } |
| |
| int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
| { |
| return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
| } |
| |
| int security_xfrm_state_pol_flow_match(struct xfrm_state *x, |
| struct xfrm_policy *xp, |
| const struct flowi *fl) |
| { |
| struct security_hook_list *hp; |
| int rc = 1; |
| |
| /* |
| * Since this function is expected to return 0 or 1, the judgment |
| * becomes difficult if multiple LSMs supply this call. Fortunately, |
| * we can use the first LSM's judgment because currently only SELinux |
| * supplies this call. |
| * |
| * For speed optimization, we explicitly break the loop rather than |
| * using the macro |
| */ |
| list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
| list) { |
| rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); |
| break; |
| } |
| return rc; |
| } |
| |
| int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) |
| { |
| return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
| } |
| |
| void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) |
| { |
| int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, |
| 0); |
| |
| BUG_ON(rc); |
| } |
| EXPORT_SYMBOL(security_skb_classify_flow); |
| |
| #endif /* CONFIG_SECURITY_NETWORK_XFRM */ |
| |
| #ifdef CONFIG_KEYS |
| |
| int security_key_alloc(struct key *key, const struct cred *cred, |
| unsigned long flags) |
| { |
| return call_int_hook(key_alloc, 0, key, cred, flags); |
| } |
| |
| void security_key_free(struct key *key) |
| { |
| call_void_hook(key_free, key); |
| } |
| |
| int security_key_permission(key_ref_t key_ref, |
| const struct cred *cred, unsigned perm) |
| { |
| return call_int_hook(key_permission, 0, key_ref, cred, perm); |
| } |
| |
| int security_key_getsecurity(struct key *key, char **_buffer) |
| { |
| *_buffer = NULL; |
| return call_int_hook(key_getsecurity, 0, key, _buffer); |
| } |
| |
| #endif /* CONFIG_KEYS */ |
| |
| #ifdef CONFIG_AUDIT |
| |
| int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) |
| { |
| return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
| } |
| |
| int security_audit_rule_known(struct audit_krule *krule) |
| { |
| return call_int_hook(audit_rule_known, 0, krule); |
| } |
| |
| void security_audit_rule_free(void *lsmrule) |
| { |
| call_void_hook(audit_rule_free, lsmrule); |
| } |
| |
| int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, |
| struct audit_context *actx) |
| { |
| return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule, |
| actx); |
| } |
| #endif /* CONFIG_AUDIT */ |
| |
| #ifdef CONFIG_BPF_SYSCALL |
| int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) |
| { |
| return call_int_hook(bpf, 0, cmd, attr, size); |
| } |
| int security_bpf_map(struct bpf_map *map, fmode_t fmode) |
| { |
| return call_int_hook(bpf_map, 0, map, fmode); |
| } |
| int security_bpf_prog(struct bpf_prog *prog) |
| { |
| return call_int_hook(bpf_prog, 0, prog); |
| } |
| int security_bpf_map_alloc(struct bpf_map *map) |
| { |
| return call_int_hook(bpf_map_alloc_security, 0, map); |
| } |
| int security_bpf_prog_alloc(struct bpf_prog_aux *aux) |
| { |
| return call_int_hook(bpf_prog_alloc_security, 0, aux); |
| } |
| void security_bpf_map_free(struct bpf_map *map) |
| { |
| call_void_hook(bpf_map_free_security, map); |
| } |
| void security_bpf_prog_free(struct bpf_prog_aux *aux) |
| { |
| call_void_hook(bpf_prog_free_security, aux); |
| } |
| #endif /* CONFIG_BPF_SYSCALL */ |
| |
| #ifdef CONFIG_PERF_EVENTS |
| int security_perf_event_open(struct perf_event_attr *attr, int type) |
| { |
| return call_int_hook(perf_event_open, 0, attr, type); |
| } |
| |
| int security_perf_event_alloc(struct perf_event *event) |
| { |
| return call_int_hook(perf_event_alloc, 0, event); |
| } |
| |
| void security_perf_event_free(struct perf_event *event) |
| { |
| call_void_hook(perf_event_free, event); |
| } |
| |
| int security_perf_event_read(struct perf_event *event) |
| { |
| return call_int_hook(perf_event_read, 0, event); |
| } |
| |
| int security_perf_event_write(struct perf_event *event) |
| { |
| return call_int_hook(perf_event_write, 0, event); |
| } |
| #endif /* CONFIG_PERF_EVENTS */ |