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 /* Copyright (c) 1988 AT&T */
27 /* All Rights Reserved */
28
29
30 #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5 */
31 /* LINTLIBRARY */
32
33 # include <errno.h>
34
35 # include "lp.h"
36 # include "msgs.h"
37
38
39 MESG *lp_Md = 0;
40
41 /*
42 ** mopen() - OPEN A MESSAGE PATH
43 */
44
45 int
mopen()46 mopen ()
47 {
48 if (lp_Md != NULL)
49 {
50 errno = EEXIST;
51 return (-1);
52 }
53
54 if ((lp_Md = mconnect(Lp_FIFO, 0, 0)) == NULL)
55 return(-1);
56
57 return(0);
58 }
59