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"	/* SVr4.0 1.3	*/
27/* LINTLIBRARY */
28# include	<errno.h>
29
30# include	"lp.h"
31# include	"msgs.h"
32
33extern MESG	*lp_Md;
34
35/*
36** mrecv() - RECEIVE A MESSAGE
37*/
38
39int
40mrecv (msgbuf, size)
41char	*msgbuf;
42int	size;
43{
44    int		n;
45
46    /*
47    **	Restart interrupted reads for binary compatibility.
48    */
49    do
50	n = mread(lp_Md, msgbuf, size);
51    while (n < 0 && errno == EINTR);
52
53    /*
54    **	Return EIDRM on disconnect for binary compatibility.
55    */
56    if (errno == EPIPE)
57	errno = EIDRM;
58
59    if (n <= 0)
60	return(-1);
61
62    return(getmessage(msgbuf, I_GET_TYPE));
63}
64