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fs: change return values from -EACCES to -EPERM

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According to SUSv3:

[EACCES] Permission denied. An attempt was made to access a file in a way
forbidden by its file access permissions.

[EPERM] Operation not permitted. An attempt was made to perform an operation
limited to processes with appropriate privileges or to the owner of a file
or other resource.

So -EPERM should be returned if capability checks fails.

Strictly speaking this is an API change since the error code user sees is
altered.

Signed-off-by: Zhao Hongjiang <[email protected]>
Acked-by: Jan Kara <[email protected]>
Acked-by: Steven Whitehouse <[email protected]>
Acked-by: Ian Kent <[email protected]>
Cc: Al Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Zhao Hongjiang 2013-02-20 13:13:55 +11:00 • committed by Al Viro
commit 4173581876
6 changed files with 16 additions and 16 deletions
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6
fs/proc/base.c
View file

@ -1711,7 +1711,7 @@ static int map_files_d_revalidate(struct dentry *dentry, unsigned int flags)
return -ECHILD;
if (!capable(CAP_SYS_ADMIN)) {
status = -EACCES;
status = -EPERM;
goto out_notask;
}
@ -1844,7 +1844,7 @@ static struct dentry *proc_map_files_lookup(struct inode *dir,
struct dentry *result;
struct mm_struct *mm;
result = ERR_PTR(-EACCES);
result = ERR_PTR(-EPERM);
if (!capable(CAP_SYS_ADMIN))
goto out;
@ -1900,7 +1900,7 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
ino_t ino;
int ret;
ret = -EACCES;
ret = -EPERM;
if (!capable(CAP_SYS_ADMIN))
goto out;