mrecv.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3 */
/* LINTLIBRARY */
# include <errno.h>
# include "lp.h"
# include "msgs.h"
extern MESG *lp_Md;
/*
** mrecv() - RECEIVE A MESSAGE
*/
int
mrecv (msgbuf, size)
char *msgbuf;
int size;
{
int n;
/*
** Restart interrupted reads for binary compatibility.
*/
do
n = mread(lp_Md, msgbuf, size);
while (n < 0 && errno == EINTR);
/*
** Return EIDRM on disconnect for binary compatibility.
*/
if (errno == EPIPE)
errno = EIDRM;
if (n <= 0)
return(-1);
return(getmessage(msgbuf, I_GET_TYPE));
}