UDF: fix UID and GID mount option ignorance

This patch fix weird behaviour of UDF mounting procedure.  To get UID
changed (for now) we have to type

	mount -t udf -o uid=some_user,uid=ignore /dev/device /mnt/moun_point

and specifying two uid at once is strange a bit.  So with the patch we are
able to mount without additional 'uid=ignore' option.  The same for GID
option is done.

This patch will not break current mount scheme (with two option).

Btw this does fix (I hope) the following

	[BUG 6124] mount of UDF fs ignores UID and GID options
        http://bugzilla.kernel.org/show_bug.cgi?id=6124

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Michael <auslands-kv@gmx.de>
Cc: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 0d2c41666cd2..1652b2c665bb 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1127,13 +1127,15 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
         }
 
         inode->i_uid = le32_to_cpu(fe->uid);
-        if (inode->i_uid == -1 || UDF_QUERY_FLAG(inode->i_sb,
-                                                 UDF_FLAG_UID_IGNORE))
+        if (inode->i_uid == -1 ||
+            UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_IGNORE) ||
+            UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_SET))
                 inode->i_uid = UDF_SB(inode->i_sb)->s_uid;
 
         inode->i_gid = le32_to_cpu(fe->gid);
-        if (inode->i_gid == -1 || UDF_QUERY_FLAG(inode->i_sb,
-                                                 UDF_FLAG_GID_IGNORE))
+        if (inode->i_gid == -1 ||
+            UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_IGNORE) ||
+            UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_SET))
                 inode->i_gid = UDF_SB(inode->i_sb)->s_gid;
 
         inode->i_nlink = le16_to_cpu(fe->fileLinkCount);