Annotation of src/usr.bin/ipcrm/ipcrm.c, Revision 1.3
1.3 ! deraadt 1: /* $OpenBSD: ipcrm.c,v 1.2 1996/06/26 05:34:35 deraadt Exp $*/
! 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:
1.3 ! deraadt 53: void usage __P((void));
! 54: int msgrm __P((key_t, int));
! 55: int shmrm __P((key_t, int));
! 56: int semrm __P((key_t, int));
! 57: void not_configured __P((int));
! 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: }
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