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| author | Eryu Guan <guaneryu@gmail.com> | 2016-08-02 19:58:28 +0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-07 10:03:31 -0400 |
| commit | 337684a1746f93ae107e05d90977b070bb7e39d8 (patch) | |
| tree | 1922204c16c1b9a8a54cecb8d3512f2b46a2695b | |
| parent | fe64f3283fb315e3d8f2b78785a86904a852ca82 (diff) | |
| download | lwn-337684a1746f93ae107e05d90977b070bb7e39d8.tar.gz lwn-337684a1746f93ae107e05d90977b070bb7e39d8.zip | |
fs: return EPERM on immutable inode
In most cases, EPERM is returned on immutable inode, and there're only a
few places returning EACCES. I noticed this when running LTP on
overlayfs, setxattr03 failed due to unexpected EACCES on immutable
inode.
So converting all EACCES to EPERM on immutable inode.
Acked-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/gfs2/inode.c | 2 | ||||
| -rw-r--r-- | fs/namei.c | 2 | ||||
| -rw-r--r-- | fs/utimes.c | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_ioctl.c | 2 |
4 files changed, 5 insertions, 4 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index e0621cacf134..e4da0ecd3285 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1800,7 +1800,7 @@ int gfs2_permission(struct inode *inode, int mask) } if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode)) - error = -EACCES; + error = -EPERM; else error = generic_permission(inode, mask); if (gfs2_holder_initialized(&i_gh)) diff --git a/fs/namei.c b/fs/namei.c index c386a329ab20..adb04146df09 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -410,7 +410,7 @@ int __inode_permission(struct inode *inode, int mask) * Nobody gets write access to an immutable file. */ if (IS_IMMUTABLE(inode)) - return -EACCES; + return -EPERM; /* * Updating mtime will likely cause i_uid and i_gid to be diff --git a/fs/utimes.c b/fs/utimes.c index 85c40f4f373d..794f5f5b1fb5 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -92,10 +92,11 @@ static int utimes_common(struct path *path, struct timespec *times) * then we need to check permissions, because * inode_change_ok() won't do it. */ - error = -EACCES; + error = -EPERM; if (IS_IMMUTABLE(inode)) goto mnt_drop_write_and_out; + error = -EACCES; if (!inode_owner_or_capable(inode)) { error = inode_permission(inode, MAY_WRITE); if (error) diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index cf46658392ce..96a70fd1f5d6 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -232,7 +232,7 @@ xfs_open_by_handle( } if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { - error = -EACCES; + error = -EPERM; goto out_dput; } |