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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 <zhaohongjiang@huawei.com>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Acked-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Zhao Hongjiang 2013-02-20 13:13:55 +11:00 committed by Al Viro
parent 9cc64ceaa8
commit 4173581876
6 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/autofs4/root.c
View File

@ -587,7 +587,7 @@ static int autofs4_dir_unlink(struct inode *dir, struct dentry *dentry)
/* This allows root to remove symlinks */
if (!autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
if (atomic_dec_and_test(&ino->count)) {
p_ino = autofs4_dentry_ino(dentry->d_parent);

2
fs/dlm/config.c
View File

@ -158,7 +158,7 @@ static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field,
unsigned int x;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
x = simple_strtoul(buf, NULL, 0);

18
fs/gfs2/sys.c
View File

@ -107,7 +107,7 @@ static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
int n = simple_strtol(buf, NULL, 0);
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
switch (n) {
case 0:
@ -135,7 +135,7 @@ static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
{
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
@ -150,7 +150,7 @@ static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
@ -163,7 +163,7 @@ static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
if (simple_strtol(buf, NULL, 0) != 1)
return -EINVAL;
@ -179,7 +179,7 @@ static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
u32 id;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
id = simple_strtoul(buf, NULL, 0);
@ -194,7 +194,7 @@ static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
u32 id;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
id = simple_strtoul(buf, NULL, 0);
@ -213,7 +213,7 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len
int rv;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum,
mode);
@ -502,7 +502,7 @@ static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf,
unsigned int x, y;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
if (sscanf(buf, "%u %u", &x, &y) != 2 || !y)
return -EINVAL;
@ -521,7 +521,7 @@ static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
unsigned int x;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
return -EPERM;
x = simple_strtoul(buf, NULL, 0);

2
fs/ncpfs/ioctl.c
View File

@ -819,7 +819,7 @@ long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
case NCP_IOC_CONN_LOGGED_IN:
case NCP_IOC_SETROOT:
if (!capable(CAP_SYS_ADMIN)) {
ret = -EACCES;
ret = -EPERM;
goto out;
}
break;

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;

2
fs/udf/file.c
View File

@ -204,7 +204,7 @@ long udf_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
goto out;
case UDF_RELOCATE_BLOCKS:
if (!capable(CAP_SYS_ADMIN)) {
result = -EACCES;
result = -EPERM;
goto out;
}
if (get_user(old_block, (long __user *)arg)) {