From 7d44d1ff0ec4077e569c9b8449dd71b354e5ad65 Mon Sep 17 00:00:00 2001
From: "Michael I. Bushnell" <mib@gnu.org>
Date: Fri, 9 Jun 1995 21:14:08 +0000
Subject: (diskfs_S_io_get_icky_async_id): Validate CRED.

---
 libdiskfs/io-async-icky.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libdiskfs/io-async-icky.c b/libdiskfs/io-async-icky.c
index 93ef8f50..22cb3abb 100644
--- a/libdiskfs/io-async-icky.c
+++ b/libdiskfs/io-async-icky.c
@@ -1,5 +1,5 @@
 /* 
-   Copyright (C) 1994 Free Software Foundation
+   Copyright (C) 1994, 1995 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -24,6 +24,9 @@ diskfs_S_io_get_icky_async_id (struct protid *cred,
 			       mach_port_t *idport,
 			       mach_msg_type_name_t *idport_type)
 {
+  if (!cred)
+    return EOPNOTSUPP;
+  
   *idport = MACH_PORT_NULL;
   *idport_type = MACH_MSG_TYPE_COPY_SEND;
   return 0;
-- 
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