[CIFS] Allow disabling CIFS Unix Extensions as mount option

Previously the only way to do this was to umount all mounts to that server,
turn off a proc setting (/proc/fs/cifs/LinuxExtensionsEnabled).

Fixes Samba bugzilla bug number: 4582 (and also 2008)

Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 07f92531f74f..916df9431336 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -463,7 +463,9 @@ static int initiate_cifs_search(const int xid, struct file *file)
 
 ffirst_retry:
         /* test for Unix extensions */
-        if (pTcon->ses->capabilities & CAP_UNIX) {
+        /* but now check for them on the share/mount not on the SMB session */
+/*      if (pTcon->ses->capabilities & CAP_UNIX) { */
+        if (pTcon->unix_ext) {
                 cifsFile->srch_inf.info_level = SMB_FIND_FILE_UNIX;
         } else if ((pTcon->ses->capabilities &
                         (CAP_NT_SMBS | CAP_NT_FIND)) == 0) {