don't carry MAY_OPEN in op->acc_mode
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/exec.c b/fs/exec.c
index b06623a..828ec5f 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -119,7 +119,7 @@
int error = PTR_ERR(tmp);
static const struct open_flags uselib_flags = {
.open_flag = O_LARGEFILE | O_RDONLY | __FMODE_EXEC,
- .acc_mode = MAY_READ | MAY_EXEC | MAY_OPEN,
+ .acc_mode = MAY_READ | MAY_EXEC,
.intent = LOOKUP_OPEN,
.lookup_flags = LOOKUP_FOLLOW,
};
@@ -763,7 +763,7 @@
int err;
struct open_flags open_exec_flags = {
.open_flag = O_LARGEFILE | O_RDONLY | __FMODE_EXEC,
- .acc_mode = MAY_EXEC | MAY_OPEN,
+ .acc_mode = MAY_EXEC,
.intent = LOOKUP_OPEN,
.lookup_flags = LOOKUP_FOLLOW,
};
diff --git a/fs/namei.c b/fs/namei.c
index 9e102ac..45c702e 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2663,10 +2663,6 @@
struct inode *inode = dentry->d_inode;
int error;
- /* O_PATH? */
- if (!acc_mode)
- return 0;
-
if (!inode)
return -ENOENT;
@@ -2688,7 +2684,7 @@
break;
}
- error = inode_permission(inode, acc_mode);
+ error = inode_permission(inode, MAY_OPEN | acc_mode);
if (error)
return error;
@@ -2880,7 +2876,7 @@
if (*opened & FILE_CREATED) {
WARN_ON(!(open_flag & O_CREAT));
fsnotify_create(dir, dentry);
- acc_mode = MAY_OPEN;
+ acc_mode = 0;
}
error = may_open(&file->f_path, acc_mode, open_flag);
if (error)
@@ -3093,7 +3089,7 @@
/* Don't check for write permission, don't truncate */
open_flag &= ~O_TRUNC;
will_truncate = false;
- acc_mode = MAY_OPEN;
+ acc_mode = 0;
path_to_nameidata(&path, nd);
goto finish_open_created;
}
@@ -3177,10 +3173,11 @@
got_write = true;
}
finish_open_created:
- error = may_open(&nd->path, acc_mode, open_flag);
- if (error)
- goto out;
-
+ if (likely(!(open_flag & O_PATH))) {
+ error = may_open(&nd->path, acc_mode, open_flag);
+ if (error)
+ goto out;
+ }
BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */
error = vfs_open(&nd->path, file, current_cred());
if (!error) {
@@ -3267,7 +3264,7 @@
goto out2;
audit_inode(nd->name, child, 0);
/* Don't check for other permissions, the inode was just created */
- error = may_open(&path, MAY_OPEN, op->open_flag);
+ error = may_open(&path, 0, op->open_flag);
if (error)
goto out2;
file->f_path.mnt = path.mnt;
diff --git a/fs/open.c b/fs/open.c
index b6f1e96..b25b154 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -887,7 +887,7 @@
static inline int build_open_flags(int flags, umode_t mode, struct open_flags *op)
{
int lookup_flags = 0;
- int acc_mode;
+ int acc_mode = ACC_MODE(flags);
if (flags & (O_CREAT | __O_TMPFILE))
op->mode = (mode & S_IALLUGO) | S_IFREG;
@@ -909,7 +909,6 @@
if (flags & __O_TMPFILE) {
if ((flags & O_TMPFILE_MASK) != O_TMPFILE)
return -EINVAL;
- acc_mode = MAY_OPEN | ACC_MODE(flags);
if (!(acc_mode & MAY_WRITE))
return -EINVAL;
} else if (flags & O_PATH) {
@@ -919,8 +918,6 @@
*/
flags &= O_DIRECTORY | O_NOFOLLOW | O_PATH;
acc_mode = 0;
- } else {
- acc_mode = MAY_OPEN | ACC_MODE(flags);
}
op->open_flag = flags;