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 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