[3.13.y.z extended stable] Patch "Fix problem recognizing symlinks" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    Fix problem recognizing symlinks

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.9.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 9f645dafe4a281f3f56f555d0b62600cd661b3d3 Mon Sep 17 00:00:00 2001
From: Steve French <smfrench at gmail.com>
Date: Thu, 25 Sep 2014 01:26:55 -0500
Subject: Fix problem recognizing symlinks

commit 19e81573fca7b87ced7701e01ba164b968d929bd upstream.

Changeset eb85d94bd introduced a problem where if a cifs open
fails during query info of a file we
will still try to close the file (happens with certain types
of reparse points) even though the file handle is not valid.

In addition for SMB2/SMB3 we were not mapping the return code returned
by Windows when trying to open a file (like a Windows NFS symlink)
which is a reparse point.

Signed-off-by: Steve French <smfrench at gmail.com>
Reviewed-by: Pavel Shilovsky <pshilovsky at samba.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 fs/cifs/smb1ops.c      | 2 +-
 fs/cifs/smb2maperror.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index c66a726..0503edf 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -579,7 +579,7 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
 		if (tmprc == -EOPNOTSUPP)
 			*symlink = true;
-		else
+		else if (tmprc == 0)
 			CIFSSMBClose(xid, tcon, netfid);
 	}

diff --git a/fs/cifs/smb2maperror.c b/fs/cifs/smb2maperror.c
index a689514..a491814 100644
--- a/fs/cifs/smb2maperror.c
+++ b/fs/cifs/smb2maperror.c
@@ -256,6 +256,8 @@ static const struct status_to_posix_error smb2_error_map_table[] = {
 	{STATUS_DLL_MIGHT_BE_INCOMPATIBLE, -EIO,
 	"STATUS_DLL_MIGHT_BE_INCOMPATIBLE"},
 	{STATUS_STOPPED_ON_SYMLINK, -EOPNOTSUPP, "STATUS_STOPPED_ON_SYMLINK"},
+	{STATUS_IO_REPARSE_TAG_NOT_HANDLED, -EOPNOTSUPP,
+	"STATUS_REPARSE_NOT_HANDLED"},
 	{STATUS_DEVICE_REQUIRES_CLEANING, -EIO,
 	"STATUS_DEVICE_REQUIRES_CLEANING"},
 	{STATUS_DEVICE_DOOR_OPEN, -EIO, "STATUS_DEVICE_DOOR_OPEN"},
--
1.9.1