ipcrm.c revision 87285 
1/*
2 * Copyright (c) 1994 Adam Glass
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by Adam Glass.
16 * 4. The name of the Author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL Adam Glass BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#ifndef lint
33static const char rcsid[] =
34  "$FreeBSD: head/usr.bin/ipcrm/ipcrm.c 87285 2001-12-03 21:00:33Z dwmalone $";
35#endif /* not lint */
36
37#include <ctype.h>
38#include <err.h>
39#include <signal.h>
40#include <stdio.h>
41#include <stdlib.h>
42#include <unistd.h>
43#include <sys/types.h>
44#include <sys/ipc.h>
45#include <sys/msg.h>
46#include <sys/sem.h>
47#include <sys/shm.h>
48
49#define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem"))
50#define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \
51	(x == 'M' ? "shared memory segment" : "semaphore"))
52
53int signaled;
54
55void usage __P((void));
56int msgrm __P((key_t, int));
57int shmrm __P((key_t, int));
58int semrm __P((key_t, int));
59void not_configured __P((int));
60
61void usage()
62{
63	fprintf(stderr, "%s\n%s\n",
64		"usage: ipcrm [-q msqid] [-m shmid] [-s semid]",
65		"             [-Q msgkey] [-M shmkey] [-S semkey] ...");
66	exit(1);
67}
68
69int msgrm(key, id)
70    key_t key;
71    int id;
72{
73    if (key) {
74	id = msgget(key, 0);
75	if (id == -1)
76	    return -1;
77    }
78    return msgctl(id, IPC_RMID, NULL);
79}
80
81int shmrm(key, id)
82    key_t key;
83    int id;
84{
85    if (key) {
86	id = shmget(key, 0, 0);
87	if (id == -1)
88	    return -1;
89    }
90    return shmctl(id, IPC_RMID, NULL);
91}
92
93int semrm(key, id)
94    key_t key;
95    int id;
96{
97    union semun arg;
98
99    if (key) {
100	id = semget(key, 0, 0);
101	if (id == -1)
102	    return -1;
103    }
104    return semctl(id, 0, IPC_RMID, arg);
105}
106
107void not_configured(int signo __unused)
108{
109    signaled++;
110}
111
112int main(argc, argv)
113    int argc;
114    char *argv[];
115
116{
117    int c, result, errflg, target_id;
118    key_t target_key;
119
120    errflg = 0;
121    signal(SIGSYS, not_configured);
122    while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) {
123
124	signaled = 0;
125	switch (c) {
126	case 'q':
127	case 'm':
128	case 's':
129	    target_id = atoi(optarg);
130	    if (c == 'q')
131		result = msgrm(0, target_id);
132	    else if (c == 'm')
133		result = shmrm(0, target_id);
134	    else
135		result = semrm(0, target_id);
136	    if (result < 0) {
137		errflg++;
138		if (!signaled)
139		    warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id);
140		else
141		    warnx("%ss are not configured in the running kernel",
142			  IPC_TO_STRING(toupper(c)));
143	    }
144	    break;
145	case 'Q':
146	case 'M':
147	case 'S':
148	    target_key = atol(optarg);
149	    if (target_key == IPC_PRIVATE) {
150		warnx("can't remove private %ss", IPC_TO_STRING(c));
151		continue;
152	    }
153	    if (c == 'Q')
154		result = msgrm(target_key, 0);
155	    else if (c == 'M')
156		result = shmrm(target_key, 0);
157	    else
158		result = semrm(target_key, 0);
159	    if (result < 0) {
160		errflg++;
161		if (!signaled)
162		    warn("%ss(%ld): ", IPC_TO_STR(c), target_key);
163		else
164		    warnx("%ss are not configured in the running kernel",
165			  IPC_TO_STRING(c));
166	    }
167	    break;
168	case ':':
169	    fprintf(stderr, "option -%c requires an argument\n", optopt);
170	    usage();
171	case '?':
172	    fprintf(stderr, "unrecognized option: -%c\n", optopt);
173	    usage();
174	}
175    }
176
177    if (optind != argc) {
178	    fprintf(stderr, "unknown argument: %s\n", argv[optind]);
179	    usage();
180    }
181    exit(errflg);
182}
183
184