Home | History | Annotate | Download | only in bnu
      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"
     41 GLOBAL
     42 dkminor(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