$OpenBSD: patch-lib_device_c,v 1.1 2010/05/20 15:41:33 naddy Exp $
--- lib/device.c.orig	Thu May 20 09:39:45 2010
+++ lib/device.c	Thu May 20 09:40:43 2010
@@ -115,6 +115,9 @@ get_kfreebsd_version ()
 # include <sys/ioctl.h>		/* ioctl */
 # include <sys/disklabel.h>
 # include <sys/cdio.h>		/* CDIOCCLRDEBUG */
+# if defined(__OpenBSD__)
+#  include <sys/dkio.h>
+# endif
 # if defined(__FreeBSD_kernel__)
 #  include <sys/param.h>
 #  if __FreeBSD_kernel_version >= 500040