cifs: change CIFSSMBUnixQuerySymLink to use new helpers

Change CIFSSMBUnixQuerySymLink to use the new unicode helper functions.
Also change the calling conventions so that the allocation of the target
name buffer is done in CIFSSMBUnixQuerySymLink rather than by the caller.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 63f6440..e17a092 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -119,16 +119,11 @@
 	full_path = build_path_from_dentry(direntry);
 
 	if (!full_path)
-		goto out_no_free;
+		goto out;
 
 	cFYI(1, ("Full path: %s inode = 0x%p", full_path, inode));
 	cifs_sb = CIFS_SB(inode->i_sb);
 	pTcon = cifs_sb->tcon;
-	target_path = kmalloc(PATH_MAX, GFP_KERNEL);
-	if (!target_path) {
-		target_path = ERR_PTR(-ENOMEM);
-		goto out;
-	}
 
 	/* We could change this to:
 		if (pTcon->unix_ext)
@@ -138,8 +133,7 @@
 
 	if (pTcon->ses->capabilities & CAP_UNIX)
 		rc = CIFSSMBUnixQuerySymLink(xid, pTcon, full_path,
-					     target_path,
-					     PATH_MAX-1,
+					     &target_path,
 					     cifs_sb->local_nls);
 	else {
 		/* BB add read reparse point symlink code here */
@@ -148,22 +142,16 @@
 		/* BB Add MAC style xsymlink check here if enabled */
 	}
 
-	if (rc == 0) {
-
-/* BB Add special case check for Samba DFS symlinks */
-
-		target_path[PATH_MAX-1] = 0;
-	} else {
+	if (rc != 0) {
 		kfree(target_path);
 		target_path = ERR_PTR(rc);
 	}
 
-out:
 	kfree(full_path);
-out_no_free:
+out:
 	FreeXid(xid);
 	nd_set_link(nd, target_path);
-	return NULL;	/* No cookie */
+	return NULL;
 }
 
 int