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
33 extern MESG *lp_Md;
34
35 /*
36 ** mrecv() - RECEIVE A MESSAGE
37 */
38
39 int
mrecv(msgbuf,size)40 mrecv (msgbuf, size)
41 char *msgbuf;
42 int 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