[CIFS] Fix paths when share is in DFS to include proper prefix

Some versions of Samba (3.2-pre e.g.) are stricter about checking to make sure that
paths in DFS name spaces are sent in the form \\server\share\dir\subdir ...
instead of \dir\subdir

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 3 insertions, 39 deletions

diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 1c2c3ce5020b..316f9830ce3b 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -295,45 +295,9 @@ cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen)
                                 cFYI(1, ("Error closing junction point "
                                          "(open for ioctl)"));
                         }
-                        /* BB unwind this long, nested function, or remove BB */
-                        if (rc == -EIO) {
-                                /* Query if DFS Junction */
-                                unsigned int num_referrals = 0;
-                                struct dfs_info3_param *refs = NULL;
-                                tmp_path =
-                                        kmalloc(MAX_TREE_SIZE + MAX_PATHCONF + 1,
-                                                GFP_KERNEL);
-                                if (tmp_path) {
-                                        strncpy(tmp_path, pTcon->treeName,
-                                                MAX_TREE_SIZE);
-                                        strncat(tmp_path, full_path,
-                                                MAX_PATHCONF);
-                                        rc = get_dfs_path(xid, pTcon->ses,
-                                                tmp_path,
-                                                cifs_sb->local_nls,
-                                                &num_referrals, &refs,
-                                                cifs_sb->mnt_cifs_flags &
-                                                    CIFS_MOUNT_MAP_SPECIAL_CHR);
-                                        cFYI(1, ("Get DFS for %s rc = %d ",
-                                                tmp_path, rc));
-                                        if ((num_referrals == 0) && (rc == 0))
-                                                rc = -EACCES;
-                                        else {
-                                                cFYI(1, ("num referral: %d",
-                                                        num_referrals));
-                                                if (refs && refs->path_name) {
-                                                        strncpy(tmpbuffer,
-                                                                refs->path_name,
-                                                                len-1);
-                                                }
-                                        }
-                                        kfree(refs);
-                                        kfree(tmp_path);
-}
-                                /* BB add code like else decode referrals
-                                then memcpy to tmpbuffer and free referrals
-                                string array BB */
-                        }
+                        /* If it is a DFS junction earlier we would have gotten
+                           PATH_NOT_COVERED returned from server so we do
+                           not need to request the DFS info here */
                 }
         }
         /* BB Anything else to do to handle recursive links? */