VFS: fix statfs() automounter semantics regression

5c8a0fbb · Dan McGee <[email protected]> · 2011-11-01 18:23:10 -05:00

No one in their right mind would expect statfs() to not work on a
automounter managed mount point. Fix it.

[ I'm not sure about the "no one in their right mind" part.  It's not
  mounted, and you didn't ask for it to be mounted.  But nobody will
  really care, and this probably makes it match previous semantics, so..
      - Linus ]

This mirrors the fix made to the quota code in 815d405ceff0d69646.

Signed-off-by: Dan McGee <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 5c8a0fbba543d9428a486f0d1282bbcf3cf1d95a
Parents: fba95699

Changes

1 files changed · +1 −1

File	Status	Add	Del	Content
fs/statfs.c	modified	+1	−1	View file

fs/statfs.c

View file

diff --git a/fs/statfs.c b/fs/statfs.c
index 8244924..9cf04a1 100644
--- a/fs/statfs.c
+++ b/fs/statfs.c
@@ -76,7 +76,7 @@ EXPORT_SYMBOL(vfs_statfs);
 int user_statfs(const char __user *pathname, struct kstatfs *st)
 {
 	struct path path;
-	int error = user_path(pathname, &path);
+	int error = user_path_at(AT_FDCWD, pathname, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path);
 	if (!error) {
 		error = vfs_statfs(&path, st);
 		path_put(&path);