xref: /illumos-gate/usr/src/cmd/lp/lib/msgs/mdestroy.c (revision 2a8bcb4efb45d99ac41c94a75c396b362c414f7f)
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 /*
23  * Copyright 1996 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 # include	<string.h>
31 # include	<stropts.h>
32 # include	<errno.h>
33 # include	<stdlib.h>
34 # include	<unistd.h>
35 
36 # include	"lp.h"
37 # include	"msgs.h"
38 
mdestroy(MESG * md)39 int mdestroy(MESG *md)
40 {
41 	struct pollfd pfd;
42 	struct strrecvfd    recbuf;
43 
44 	if (!md || md->type != MD_MASTER || md->file == NULL) {
45 		errno = EINVAL;
46 		return(-1);
47 	}
48 
49 	if (fdetach(md->file) != 0)
50 		return(-1);
51 
52 	pfd.fd = md->readfd;
53 	pfd.events = POLLIN;
54 	while (poll(&pfd, 1, 500) > 0) {
55 		if (ioctl(md->readfd, I_RECVFD, &recbuf) == 0)
56 			close(recbuf.fd);
57 	}
58 
59 	/*
60 	 * Pop connld module
61 	 */
62 	if (ioctl(md->writefd, I_POP, 0) != 0)
63 		return(-1);
64 
65 	Free(md->file);
66 	md->file = NULL;
67 
68 	(void) mdisconnect(md);
69 
70 	return(0);
71 }
72