| From 70945643722ffeac779d2529a348f99567fa5c33 Mon Sep 17 00:00:00 2001 |
| From: Jeff Layton <jlayton@redhat.com> |
| Date: Mon, 14 Mar 2011 13:48:08 -0400 |
| Subject: cifs: always do is_path_accessible check in cifs_mount |
| |
| From: Jeff Layton <jlayton@redhat.com> |
| |
| commit 70945643722ffeac779d2529a348f99567fa5c33 upstream. |
| |
| Currently, we skip doing the is_path_accessible check in cifs_mount if |
| there is no prefixpath. I have a report of at least one server however |
| that allows a TREE_CONNECT to a share that has a DFS referral at its |
| root. The reporter in this case was using a UNC that had no prefixpath, |
| so the is_path_accessible check was not triggered and the box later hit |
| a BUG() because we were chasing a DFS referral on the root dentry for |
| the mount. |
| |
| This patch fixes this by removing the check for a zero-length |
| prefixpath. That should make the is_path_accessible check be done in |
| this situation and should allow the client to chase the DFS referral at |
| mount time instead. |
| |
| Reported-and-Tested-by: Yogesh Sharma <ysharma@cymer.com> |
| Signed-off-by: Jeff Layton <jlayton@redhat.com> |
| Signed-off-by: Steve French <sfrench@us.ibm.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| |
| --- |
| fs/cifs/connect.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/fs/cifs/connect.c |
| +++ b/fs/cifs/connect.c |
| @@ -2532,7 +2532,7 @@ try_mount_again: |
| |
| remote_path_check: |
| /* check if a whole path (including prepath) is not remote */ |
| - if (!rc && cifs_sb->prepathlen && tcon) { |
| + if (!rc && tcon) { |
| /* build_path_to_root works only when we have a valid tcon */ |
| full_path = cifs_build_path_to_root(cifs_sb); |
| if (full_path == NULL) { |
