Add OpenBSD support.

includes/cf/openbsd.h

+/* openbsd.h
+
+   System dependencies for OpenBSD... */
+
+/*
+ * Copyright (c) 1996-1999 Internet Software Consortium.
+ * Use is subject to license terms which appear in the file named
+ * ISC-LICENSE that should have accompanied this file when you
+ * received it.   If a file named ISC-LICENSE did not accompany this
+ * file, or you are not sure the one you have is correct, you may
+ * obtain an applicable copy of the license at:
+ *
+ *             http://www.isc.org/isc-license-1.0.html. 
+ *
+ * This file is part of the ISC DHCP distribution.   The documentation
+ * associated with this file is listed in the file DOCUMENTATION,
+ * included in the top-level directory of this release.
+ *
+ * Support and other services are available for ISC products - see
+ * http://www.isc.org for more information.
+ */
+
+#include <syslog.h>
+#include <sys/types.h>
+#include <string.h>
+#include <paths.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <setjmp.h>
+#include <limits.h>
+
+#include <sys/wait.h>
+#include <signal.h>
+
+extern int h_errno;
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+#include <sys/sockio.h>
+
+#define ifr_netmask ifr_addr
+
+/* Varargs stuff... */
+#include <stdarg.h>
+#define VA_DOTDOTDOT ...
+#define va_dcl
+#define VA_start(list, last) va_start (list, last)
+
+#ifndef _PATH_DHCPD_PID
+#define _PATH_DHCPD_PID	"/var/run/dhcpd.pid"
+#endif
+#ifndef _PATH_DHCPD_DB
+#define _PATH_DHCPD_DB "/var/db/dhcpd.leases"
+#endif
+#ifndef _PATH_DHCLIENT_PID
+#define _PATH_DHCLIENT_PID "/var/run/dhclient.pid"
+#endif
+#ifndef _PATH_DHCLIENT_DB
+#define _PATH_DHCLIENT_DB "/var/db/dhclient.leases"
+#endif
+
+#define EOL	'\n'
+#define VOIDPTR void *
+
+/* Time stuff... */
+#include <sys/time.h>
+#define TIME time_t
+#define GET_TIME(x)	time ((x))
+
+#define HAVE_SA_LEN
+#define HAVE_MKSTEMP
+
+#if defined (USE_DEFAULT_NETWORK)
+#  define USE_BPF
+#endif
+
+#ifdef __alpha__
+#define PTRSIZE_64BIT
+#endif

includes/osdep.h

@@ -78,6 +78,10 @@
 #  include "cf/freebsd.h"
 #endif
 
+#ifdef OpenBSD
+#  include "cf/openbsd.h"
+#endif
+
 #if defined (__osf__) && defined (__alpha)
 #  include "cf/alphaosf.h"
 #endif