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1.4 ! millert 1: /* $OpenBSD: ipcrm.c,v 1.3 1997/09/11 07:59:01 deraadt Exp $*/
1.3 deraadt 2:
1.1 deraadt 3: /*
4: * Copyright (c) 1994 Adam Glass
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by Adam Glass.
18: * 4. The name of the Author may not be used to endorse or promote products
19: * derived from this software without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL Adam Glass BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
33: */
34:
35: #include <sys/types.h>
36: #include <sys/ipc.h>
37: #include <sys/msg.h>
38: #include <sys/sem.h>
39: #include <sys/shm.h>
1.3 deraadt 40: #include <stdio.h>
41: #include <unistd.h>
42: #include <stdlib.h>
43: #include <ctype.h>
44: #include <err.h>
45: #include <signal.h>
1.1 deraadt 46:
47: #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem"))
48: #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \
49: (x == 'M' ? "shared memory segment" : "semaphore"))
50:
51: int signaled;
52:
1.4 ! millert 53: void usage(void);
! 54: int msgrm(key_t, int);
! 55: int shmrm(key_t, int);
! 56: int semrm(key_t, int);
! 57: void not_configured(int);
1.3 deraadt 58:
59: void
60: usage()
1.1 deraadt 61: {
62: fprintf(stderr, "usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]\n");
63: fprintf(stderr, " [-Q msgkey] [-M shmkey] [-S semkey] ...]\n");
64: exit(1);
65: }
66:
1.3 deraadt 67: int
68: msgrm(key, id)
69: key_t key;
70: int id;
71: {
72: if (key) {
73: id = msgget(key, 0);
74: if (id == -1)
75: return (-1);
76: }
77: return (msgctl(id, IPC_RMID, NULL));
78: }
79:
80: int
81: 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);
1.1 deraadt 89: }
1.3 deraadt 90: return (shmctl(id, IPC_RMID, NULL));
91: }
92:
93: int
94: semrm(key, id)
95: key_t key;
96: int id;
97: {
98: union semun arg;
99:
100: if (key) {
101: id = semget(key, 0, 0);
102: if (id == -1)
103: return (-1);
104: }
105: return (semctl(id, 0, IPC_RMID, arg));
106: }
107:
108: void
109: not_configured(sig)
110: int sig;
111: {
112: signaled++;
113: }
114:
115: int
116: main(argc, argv)
117: int argc;
118: char *argv[];
119: {
120: int c, result, errflg, target_id;
121: key_t target_key;
122:
123: errflg = 0;
124: signal(SIGSYS, not_configured);
125: while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) {
126: signaled = 0;
127: switch (c) {
128: case 'q':
129: case 'm':
130: case 's':
131: target_id = atoi(optarg);
132: if (c == 'q')
133: result = msgrm(0, target_id);
134: else if (c == 'm')
135: result = shmrm(0, target_id);
136: else
137: result = semrm(0, target_id);
138: if (result < 0) {
139: errflg++;
140: if (!signaled)
141: warn("%sid(%d): ",
142: IPC_TO_STR(toupper(c)), target_id);
143: else
144: warnx("%ss are not configured in the running kernel",
145: IPC_TO_STRING(toupper(c)));
146: }
147: break;
148: case 'Q':
149: case 'M':
150: case 'S':
151: target_key = atol(optarg);
152: if (target_key == IPC_PRIVATE) {
153: warnx("can't remove private %ss", IPC_TO_STRING(c));
154: continue;
155: }
156: if (c == 'Q')
157: result = msgrm(target_key, 0);
158: else if (c == 'M')
159: result = shmrm(target_key, 0);
160: else
161: result = semrm(target_key, 0);
162: if (result < 0) {
163: errflg++;
164: if (!signaled)
165: warn("%skey(%ld): ", IPC_TO_STR(c),
166: target_key);
167: else
168: warnx("%ss are not configured in the running kernel",
169: IPC_TO_STRING(c));
170: }
171: break;
172: case ':':
173: fprintf(stderr, "option -%c requires an argument\n", optopt);
174: usage();
175: default:
176: fprintf(stderr, "unrecognized option: -%c\n", optopt);
177: usage();
178: }
1.1 deraadt 179: }
180:
1.3 deraadt 181: if (optind != argc) {
182: fprintf(stderr, "unknown argument: %s\n", argv[optind]);
183: usage();
184: }
185: exit(errflg);
1.1 deraadt 186: }