$OpenBSD: patch-utmp_c,v 1.1 2005/10/31 20:27:14 naddy Exp $
--- utmp.c.orig	Mon Oct 31 21:10:02 2005
+++ utmp.c	Mon Oct 31 21:10:14 2005
@@ -6,6 +6,9 @@
 #include	<fcntl.h>
 #include	<utmp.h>
 #include	<stdio.h>
+#ifdef HAVE_UNISTD_H
+#include        <unistd.h>
+#endif
 
 #ifdef DEBUG_UTMP
 #undef  UTMP_FILE