1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23/*	  All Rights Reserved  	*/
24
25
26#ident	"%Z%%M%	%I%	%E% SMI"
27
28#ifndef DIAL
29	static char	SCCSID[] = "@(#)dkminor.c	2.3+BNU DKHOST 86/12/02";
30#endif
31/*
32 *	COMMKIT(TM) Software - Datakit(R) VCS Interface Release 2.0 V1
33 */
34/*
35   Return minor device number for a given Datakit device.
36   The channel number is used since using the minor device returned
37   by fstat gives wrong results for duplex systems.
38*/
39
40#include "dk.h"
41GLOBAL
42dkminor(fd)
43{
44	struct diocreq iocb;
45
46
47	if (ioctl(fd, DIOCINFO, &iocb) < 0)
48		return(-1);
49	return(iocb.req_chmin); /* req_chmin contains channel number */
50}
51