diff --git a/stand/libsa/dev.c b/stand/libsa/dev.c
index 1d1dd075580e..2ccdce22d596 100644
--- a/stand/libsa/dev.c
+++ b/stand/libsa/dev.c
@@ -1,58 +1,69 @@
 /*	$NetBSD: dev.c,v 1.4 1994/10/30 21:48:23 cgd Exp $	*/
 
 /*-
  * Copyright (c) 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *	@(#)dev.c	8.1 (Berkeley) 6/11/93
  */
 
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 #include <sys/reboot.h>
 
 #include "stand.h"
 
 int
 nodev(void)
 {
 	return (ENXIO);
 }
 
 void
 nullsys(void)
 {
 }
 
 /* ARGSUSED */
 int
 noioctl(struct open_file *f __unused, u_long cmd __unused, void *data __unused)
 {
 	return (EINVAL);
 }
+
+char *
+devformat(struct devdesc *d)
+{
+	static char name[DEV_DEVLEN];
+
+	if (d->d_dev->dv_fmtdev != NULL)
+		return (d->d_dev->dv_fmtdev(d));
+	snprintf(name, sizeof(name), "%s%d:", d->d_dev->dv_name, d->d_unit);
+	return (name);
+}