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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-10-04 14:40:44 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-10-14 11:16:46 +0200 |
| commit | cb348edb6bef7250d1d0f8f2d7dac152d8b52626 (patch) | |
| tree | 166b20d741c93b36a960fbf9092920ffcee45273 /fs/overlayfs/super.c | |
| parent | 6a45b3628ce4dcf7498b39c87d475bab6e2a9b24 (diff) | |
| download | lwn-cb348edb6bef7250d1d0f8f2d7dac152d8b52626.tar.gz lwn-cb348edb6bef7250d1d0f8f2d7dac152d8b52626.zip | |
ovl: explain error values when removing acl from workdir
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/super.c')
| -rw-r--r-- | fs/overlayfs/super.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 8ccebaf64c5b..eff0f909cd78 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -832,6 +832,19 @@ retry: if (err) goto out_dput; + /* + * Try to remove POSIX ACL xattrs from workdir. We are good if: + * + * a) success (there was a POSIX ACL xattr and was removed) + * b) -ENODATA (there was no POSIX ACL xattr) + * c) -EOPNOTSUPP (POSIX ACL xattrs are not supported) + * + * There are various other error values that could effectively + * mean that the xattr doesn't exist (e.g. -ERANGE is returned + * if the xattr name is too long), but the set of filesystems + * allowed as upper are limited to "normal" ones, where checking + * for the above two errors is sufficient. + */ err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT); if (err && err != -ENODATA && err != -EOPNOTSUPP) goto out_dput; |