ipcrm.c revision 1.9
1 1.9 thorpej /* $NetBSD: ipcrm.c,v 1.9 1999/08/25 05:13:06 thorpej Exp $ */ 2 1.5 tls 3 1.1 cgd /* 4 1.2 glass * Copyright (c) 1994 Adam Glass 5 1.2 glass * All rights reserved. 6 1.1 cgd * 7 1.2 glass * Redistribution and use in source and binary forms, with or without 8 1.2 glass * modification, are permitted provided that the following conditions 9 1.2 glass * are met: 10 1.2 glass * 1. Redistributions of source code must retain the above copyright 11 1.2 glass * notice, this list of conditions and the following disclaimer. 12 1.4 glass * 2. Redistributions in binary form must reproduce the above copyright 13 1.4 glass * notice, this list of conditions and the following disclaimer in the 14 1.4 glass * documentation and/or other materials provided with the distribution. 15 1.4 glass * 3. All advertising materials mentioning features or use of this software 16 1.4 glass * must display the following acknowledgement: 17 1.4 glass * This product includes software developed by Adam Glass. 18 1.4 glass * 4. The name of the Author may not be used to endorse or promote products 19 1.2 glass * derived from this software without specific prior written permission. 20 1.2 glass * 21 1.2 glass * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND 22 1.2 glass * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 1.2 glass * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 1.2 glass * ARE DISCLAIMED. IN NO EVENT SHALL Adam Glass BE LIABLE 25 1.2 glass * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 1.2 glass * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 1.2 glass * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 1.2 glass * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 1.2 glass * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 1.2 glass * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 1.2 glass * SUCH DAMAGE. 32 1.1 cgd */ 33 1.1 cgd 34 1.9 thorpej #include <sys/types.h> 35 1.9 thorpej #include <sys/ipc.h> 36 1.9 thorpej #include <sys/msg.h> 37 1.9 thorpej #include <sys/sem.h> 38 1.9 thorpej #include <sys/shm.h> 39 1.9 thorpej 40 1.1 cgd #include <stdio.h> 41 1.6 drochner #include <stdlib.h> 42 1.2 glass #include <unistd.h> 43 1.6 drochner #include <ctype.h> 44 1.2 glass #include <err.h> 45 1.2 glass #include <signal.h> 46 1.1 cgd 47 1.2 glass #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) 48 1.2 glass #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ 49 1.2 glass (x == 'M' ? "shared memory segment" : "semaphore")) 50 1.2 glass 51 1.2 glass int signaled; 52 1.2 glass 53 1.6 drochner void usage __P((void)); 54 1.6 drochner int msgrm __P((key_t, int)); 55 1.6 drochner int shmrm __P((key_t, int)); 56 1.6 drochner int semrm __P((key_t, int)); 57 1.6 drochner void not_configured __P((void)); 58 1.6 drochner int main __P((int, char *[])); 59 1.6 drochner 60 1.4 glass void usage() 61 1.4 glass { 62 1.4 glass fprintf(stderr, "usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]\n"); 63 1.4 glass fprintf(stderr, " [-Q msgkey] [-M shmkey] [-S semkey] ...]\n"); 64 1.4 glass exit(1); 65 1.4 glass } 66 1.4 glass 67 1.2 glass int msgrm(key, id) 68 1.2 glass key_t key; 69 1.2 glass int id; 70 1.2 glass { 71 1.2 glass if (key) { 72 1.2 glass id = msgget(key, 0); 73 1.2 glass if (id == -1) 74 1.2 glass return -1; 75 1.2 glass } 76 1.2 glass return msgctl(id, IPC_RMID, NULL); 77 1.2 glass } 78 1.1 cgd 79 1.2 glass int shmrm(key, id) 80 1.2 glass key_t key; 81 1.2 glass int id; 82 1.1 cgd { 83 1.2 glass if (key) { 84 1.2 glass id = shmget(key, 0, 0); 85 1.2 glass if (id == -1) 86 1.2 glass return -1; 87 1.2 glass } 88 1.2 glass return shmctl(id, IPC_RMID, NULL); 89 1.2 glass } 90 1.1 cgd 91 1.2 glass int semrm(key, id) 92 1.2 glass key_t key; 93 1.2 glass int id; 94 1.2 glass { 95 1.1 cgd 96 1.2 glass if (key) { 97 1.2 glass id = semget(key, 0, 0); 98 1.2 glass if (id == -1) 99 1.2 glass return -1; 100 1.2 glass } 101 1.8 thorpej return semctl(id, 0, IPC_RMID, NULL); 102 1.1 cgd } 103 1.1 cgd 104 1.2 glass void not_configured() 105 1.1 cgd { 106 1.2 glass signaled++; 107 1.2 glass } 108 1.2 glass 109 1.2 glass int main(argc, argv) 110 1.2 glass int argc; 111 1.2 glass char *argv[]; 112 1.1 cgd 113 1.2 glass { 114 1.2 glass int c, result, errflg, target_id; 115 1.2 glass key_t target_key; 116 1.1 cgd 117 1.2 glass errflg = 0; 118 1.6 drochner signal(SIGSYS, (void (*) __P((int)))not_configured); 119 1.2 glass while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { 120 1.2 glass 121 1.2 glass signaled = 0; 122 1.2 glass switch (c) { 123 1.2 glass case 'q': 124 1.2 glass case 'm': 125 1.2 glass case 's': 126 1.2 glass target_id = atoi(optarg); 127 1.2 glass if (c == 'q') 128 1.2 glass result = msgrm(0, target_id); 129 1.2 glass else if (c == 'm') 130 1.2 glass result = shmrm(0, target_id); 131 1.2 glass else 132 1.2 glass result = semrm(0, target_id); 133 1.2 glass if (result < 0) { 134 1.2 glass errflg++; 135 1.2 glass if (!signaled) 136 1.2 glass warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id); 137 1.2 glass else 138 1.2 glass warnx("%ss are not configured in the running kernel", 139 1.2 glass IPC_TO_STRING(toupper(c))); 140 1.2 glass } 141 1.2 glass break; 142 1.2 glass case 'Q': 143 1.2 glass case 'M': 144 1.2 glass case 'S': 145 1.2 glass target_key = atol(optarg); 146 1.2 glass if (target_key == IPC_PRIVATE) { 147 1.2 glass warnx("can't remove private %ss", IPC_TO_STRING(c)); 148 1.2 glass continue; 149 1.2 glass } 150 1.2 glass if (c == 'Q') 151 1.2 glass result = msgrm(target_key, 0); 152 1.2 glass else if (c == 'M') 153 1.2 glass result = shmrm(target_key, 0); 154 1.2 glass else 155 1.2 glass result = semrm(target_key, 0); 156 1.2 glass if (result < 0) { 157 1.2 glass errflg++; 158 1.2 glass if (!signaled) 159 1.7 christos warn("%skey(%ld): ", IPC_TO_STR(c), (long) target_key); 160 1.2 glass else 161 1.2 glass warnx("%ss are not configured in the running kernel", 162 1.2 glass IPC_TO_STRING(c)); 163 1.2 glass } 164 1.2 glass break; 165 1.2 glass case ':': 166 1.4 glass fprintf(stderr, "option -%c requires an argument\n", optopt); 167 1.4 glass usage(); 168 1.2 glass case '?': 169 1.4 glass fprintf(stderr, "unrecognized option: -%c\n", optopt); 170 1.4 glass usage(); 171 1.1 cgd } 172 1.2 glass } 173 1.4 glass 174 1.2 glass if (optind != argc) { 175 1.4 glass fprintf(stderr, "unknown argument: %s\n", argv[optind]); 176 1.4 glass usage(); 177 1.2 glass } 178 1.2 glass exit(errflg); 179 1.1 cgd } 180 1.2 glass 181
Indexes created Thu Oct 23 22:10:10 GMT 2025