[CIFS] Support for mounting to older servers part 2. Add support for

legacy getattr (lookup).

Signed-off-by: Steve French (sfrench@us.ibm.com)

1 files changed, 11 insertions, 1 deletions

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 2d50b3507d13..34f0168c4041 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -215,8 +215,18 @@ int cifs_get_inode_info(struct inode **pinode,
                 pfindData = (FILE_ALL_INFO *)buf;
                 /* could do find first instead but this returns more info */
                 rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
-                              cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & 
+                              cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
                                 CIFS_MOUNT_MAP_SPECIAL_CHR);
+                /* BB optimize code so we do not make the above call
+                when server claims no NT SMB support and the above call
+                failed at least once - set flag in tcon or mount */
+                if((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
+                        rc = SMBQueryInformation(xid, pTcon, search_path,
+                                        pfindData, cifs_sb->local_nls, 
+                                        cifs_sb->mnt_cifs_flags &
+                                          CIFS_MOUNT_MAP_SPECIAL_CHR);
+                }
+                
         }
         /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
         if (rc) {