Annotation of src/usr.bin/ipcrm/ipcrm.c, Revision 1.1.1.1
1.1 deraadt 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: * $Id: ipcrm.c,v 1.4 1994/08/07 18:27:42 glass Exp $
32: */
33:
34: #include <stdio.h>
35: #include <unistd.h>
36: #include <err.h>
37: #include <signal.h>
38: #include <sys/types.h>
39: #include <sys/ipc.h>
40: #include <sys/msg.h>
41: #include <sys/sem.h>
42: #include <sys/shm.h>
43:
44: #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem"))
45: #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \
46: (x == 'M' ? "shared memory segment" : "semaphore"))
47:
48: int signaled;
49:
50: void usage()
51: {
52: fprintf(stderr, "usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]\n");
53: fprintf(stderr, " [-Q msgkey] [-M shmkey] [-S semkey] ...]\n");
54: exit(1);
55: }
56:
57: int msgrm(key, id)
58: key_t key;
59: int id;
60: {
61: if (key) {
62: id = msgget(key, 0);
63: if (id == -1)
64: return -1;
65: }
66: return msgctl(id, IPC_RMID, NULL);
67: }
68:
69: int shmrm(key, id)
70: key_t key;
71: int id;
72: {
73: if (key) {
74: id = shmget(key, 0, 0);
75: if (id == -1)
76: return -1;
77: }
78: return shmctl(id, IPC_RMID, NULL);
79: }
80:
81: int semrm(key, id)
82: key_t key;
83: int id;
84: {
85: union semun arg;
86:
87: if (key) {
88: id = semget(key, 0, 0);
89: if (id == -1)
90: return -1;
91: }
92: return semctl(id, 0, IPC_RMID, arg);
93: }
94:
95: void not_configured()
96: {
97: signaled++;
98: }
99:
100: int main(argc, argv)
101: int argc;
102: char *argv[];
103:
104: {
105: int c, result, errflg, target_id;
106: key_t target_key;
107:
108: errflg = 0;
109: signal(SIGSYS, not_configured);
110: while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) {
111:
112: signaled = 0;
113: switch (c) {
114: case 'q':
115: case 'm':
116: case 's':
117: target_id = atoi(optarg);
118: if (c == 'q')
119: result = msgrm(0, target_id);
120: else if (c == 'm')
121: result = shmrm(0, target_id);
122: else
123: result = semrm(0, target_id);
124: if (result < 0) {
125: errflg++;
126: if (!signaled)
127: warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id);
128: else
129: warnx("%ss are not configured in the running kernel",
130: IPC_TO_STRING(toupper(c)));
131: }
132: break;
133: case 'Q':
134: case 'M':
135: case 'S':
136: target_key = atol(optarg);
137: if (target_key == IPC_PRIVATE) {
138: warnx("can't remove private %ss", IPC_TO_STRING(c));
139: continue;
140: }
141: if (c == 'Q')
142: result = msgrm(target_key, 0);
143: else if (c == 'M')
144: result = shmrm(target_key, 0);
145: else
146: result = semrm(target_key, 0);
147: if (result < 0) {
148: errflg++;
149: if (!signaled)
150: warn("%key(%ld): ", IPC_TO_STR(c), target_key);
151: else
152: warnx("%ss are not configured in the running kernel",
153: IPC_TO_STRING(c));
154: }
155: break;
156: case ':':
157: fprintf(stderr, "option -%c requires an argument\n", optopt);
158: usage();
159: case '?':
160: fprintf(stderr, "unrecognized option: -%c\n", optopt);
161: usage();
162: }
163: }
164:
165: if (optind != argc) {
166: fprintf(stderr, "unknown argument: %s\n", argv[optind]);
167: usage();
168: }
169: exit(errflg);
170: }
171:
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