Annotation of src/usr.bin/ipcrm/ipcrm.c, Revision 1.5
1.5 ! deraadt 1: /* $OpenBSD: ipcrm.c,v 1.4 2002/02/16 21:27:47 millert 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
1.5 ! deraadt 60: usage(void)
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
1.5 ! deraadt 68: msgrm(key_t key, int id)
1.3 deraadt 69: {
70: if (key) {
71: id = msgget(key, 0);
72: if (id == -1)
73: return (-1);
74: }
75: return (msgctl(id, IPC_RMID, NULL));
76: }
77:
78: int
1.5 ! deraadt 79: shmrm(key_t key, int id)
1.3 deraadt 80: {
81: if (key) {
82: id = shmget(key, 0, 0);
83: if (id == -1)
84: return (-1);
1.1 deraadt 85: }
1.3 deraadt 86: return (shmctl(id, IPC_RMID, NULL));
87: }
88:
89: int
1.5 ! deraadt 90: semrm(key_t key, int id)
1.3 deraadt 91: {
92: union semun arg;
93:
94: if (key) {
95: id = semget(key, 0, 0);
96: if (id == -1)
97: return (-1);
98: }
99: return (semctl(id, 0, IPC_RMID, arg));
100: }
101:
102: void
1.5 ! deraadt 103: not_configured(int signo)
1.3 deraadt 104: {
105: signaled++;
106: }
107:
108: int
1.5 ! deraadt 109: main(int argc, char *argv[])
1.3 deraadt 110: {
111: int c, result, errflg, target_id;
112: key_t target_key;
113:
114: errflg = 0;
115: signal(SIGSYS, not_configured);
116: while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) {
117: signaled = 0;
118: switch (c) {
119: case 'q':
120: case 'm':
121: case 's':
122: target_id = atoi(optarg);
123: if (c == 'q')
124: result = msgrm(0, target_id);
125: else if (c == 'm')
126: result = shmrm(0, target_id);
127: else
128: result = semrm(0, target_id);
129: if (result < 0) {
130: errflg++;
131: if (!signaled)
132: warn("%sid(%d): ",
133: IPC_TO_STR(toupper(c)), target_id);
134: else
135: warnx("%ss are not configured in the running kernel",
136: IPC_TO_STRING(toupper(c)));
137: }
138: break;
139: case 'Q':
140: case 'M':
141: case 'S':
142: target_key = atol(optarg);
143: if (target_key == IPC_PRIVATE) {
144: warnx("can't remove private %ss", IPC_TO_STRING(c));
145: continue;
146: }
147: if (c == 'Q')
148: result = msgrm(target_key, 0);
149: else if (c == 'M')
150: result = shmrm(target_key, 0);
151: else
152: result = semrm(target_key, 0);
153: if (result < 0) {
154: errflg++;
155: if (!signaled)
156: warn("%skey(%ld): ", IPC_TO_STR(c),
157: target_key);
158: else
159: warnx("%ss are not configured in the running kernel",
160: IPC_TO_STRING(c));
161: }
162: break;
163: case ':':
164: fprintf(stderr, "option -%c requires an argument\n", optopt);
165: usage();
166: default:
167: fprintf(stderr, "unrecognized option: -%c\n", optopt);
168: usage();
169: }
1.1 deraadt 170: }
171:
1.3 deraadt 172: if (optind != argc) {
173: fprintf(stderr, "unknown argument: %s\n", argv[optind]);
174: usage();
175: }
176: exit(errflg);
1.1 deraadt 177: }
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