From dfb6c5aa43999b1ce86b55b370af469fb7afd30d Mon Sep 17 00:00:00 2001
From: Ted Lemon <source@isc.org>
Date: Thu, 5 Apr 2001 22:44:23 +0000
Subject: [PATCH] Make sure we have a stdin, stdout and stderr.

---
 relay/dhcrelay.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/relay/dhcrelay.c b/relay/dhcrelay.c
index daadec68a..bb1302e2b 100644
--- a/relay/dhcrelay.c
+++ b/relay/dhcrelay.c
@@ -3,7 +3,7 @@
    DHCP/BOOTP Relay Agent. */
 
 /*
- * Copyright (c) 1997-2000 Internet Software Consortium.
+ * Copyright (c) 1997-2001 Internet Software Consortium.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -43,7 +43,7 @@
 
 #ifndef lint
 static char ocopyright[] =
-"$Id: dhcrelay.c,v 1.50 2001/02/26 22:21:14 mellon Exp $ Copyright (c) 1997-2000 Internet Software Consortium.  All rights reserved.\n";
+"$Id: dhcrelay.c,v 1.51 2001/04/05 22:44:23 mellon Exp $ Copyright (c) 1997-2000 Internet Software Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -124,6 +124,16 @@ int main (argc, argv, envp)
 	isc_result_t status;
 	char *s;
 
+	/* Make sure we have stdin, stdout and stderr. */
+	i = open ("/dev/null", O_RDWR);
+	if (i == 0)
+		i = open ("/dev/null", O_RDWR);
+	if (i == 1) {
+		i = open ("/dev/null", O_RDWR);
+		log_perror = 0; /* No sense logging to /dev/null. */
+	} else if (i != -1)
+		close (i);
+
 #ifdef SYSLOG_4_2
 	openlog ("dhcrelay", LOG_NDELAY);
 	log_priority = LOG_DAEMON;
-- 
2.47.2