aboutsummaryrefslogtreecommitdiffstats
path: root/fs/nfs/dir.c
diff options
context:
space:
mode:
authorDave Hansen <haveblue@us.ibm.com>2008-02-15 17:37:56 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2008-04-19 00:29:27 -0400
commit2c463e95480829a2fe8f386589516e13b1289db6 (patch)
tree7294d93a15f62ccc2c649ef9782b7f85ae7d1ef8 /fs/nfs/dir.c
parentec82687f29127a954dd0da95dc1e0a4ce92b560c (diff)
[PATCH] r/o bind mounts: check mnt instead of superblock directly
If we depend on the inodes for writeability, we will not catch the r/o mounts when implemented. This patches uses __mnt_want_write(). It does not guarantee that the mount will stay writeable after the check. But, this is OK for one of the checks because it is just for a printk(). The other two are probably unnecessary and duplicate existing checks in the VFS. This won't make them better checks than before, but it will make them detect r/o mounts. Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r--fs/nfs/dir.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 6cea7479c5b4..d9e30ac2798d 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -967,7 +967,8 @@ static int is_atomic_open(struct inode *dir, struct nameidata *nd)
967 if (nd->flags & LOOKUP_DIRECTORY) 967 if (nd->flags & LOOKUP_DIRECTORY)
968 return 0; 968 return 0;
969 /* Are we trying to write to a read only partition? */ 969 /* Are we trying to write to a read only partition? */
970 if (IS_RDONLY(dir) && (nd->intent.open.flags & (O_CREAT|O_TRUNC|FMODE_WRITE))) 970 if (__mnt_is_readonly(nd->path.mnt) &&
971 (nd->intent.open.flags & (O_CREAT|O_TRUNC|FMODE_WRITE)))
971 return 0; 972 return 0;
972 return 1; 973 return 1;
973} 974}