From 80b94d3721d130e60304019cc5c83ede42cd48a1 Mon Sep 17 00:00:00 2001
From: Theo de Raadt <deraadt@cvs.openbsd.org>
Date: Fri, 1 Aug 1997 21:59:14 +0000
Subject: disable RFFDG; long explanation...

---
 sys/kern/kern_fork.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c
index 9c4cd342abf..f87e27995c7 100644
--- a/sys/kern/kern_fork.c
+++ b/sys/kern/kern_fork.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_fork.c,v 1.9 1997/07/07 17:52:10 kstailey Exp $	*/
+/*	$OpenBSD: kern_fork.c,v 1.10 1997/08/01 21:59:13 deraadt Exp $	*/
 /*	$NetBSD: kern_fork.c,v 1.29 1996/02/09 18:59:34 christos Exp $	*/
 
 /*
@@ -130,6 +130,8 @@ fork1(p1, forktype, rforkflags, retval)
 			return (EINVAL);	/* XXX unimplimented */
 		if (rforkflags & RFCFDG)
 			cleanfd = 1;
+		if (dupfd == 0)
+			return (EPERM);
 	}
 
 	/*
-- 
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