ipcrm.c revision 1.5
1 1.5 tls /* $NetBSD: ipcrm.c,v 1.5 1997/01/09 20:20:22 tls 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 1.2 glass * 33 1.5 tls * $NetBSD: ipcrm.c,v 1.5 1997/01/09 20:20:22 tls Exp $ 34 1.1 cgd */ 35 1.1 cgd 36 1.1 cgd #include <stdio.h> 37 1.2 glass #include <unistd.h> 38 1.2 glass #include <err.h> 39 1.2 glass #include <signal.h> 40 1.1 cgd #include <sys/types.h> 41 1.1 cgd #include <sys/ipc.h> 42 1.2 glass #include <sys/msg.h> 43 1.1 cgd #include <sys/sem.h> 44 1.1 cgd #include <sys/shm.h> 45 1.1 cgd 46 1.2 glass #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) 47 1.2 glass #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ 48 1.2 glass (x == 'M' ? "shared memory segment" : "semaphore")) 49 1.2 glass 50 1.2 glass int signaled; 51 1.2 glass 52 1.4 glass void usage() 53 1.4 glass { 54 1.4 glass fprintf(stderr, "usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]\n"); 55 1.4 glass fprintf(stderr, " [-Q msgkey] [-M shmkey] [-S semkey] ...]\n"); 56 1.4 glass exit(1); 57 1.4 glass } 58 1.4 glass 59 1.2 glass int msgrm(key, id) 60 1.2 glass key_t key; 61 1.2 glass int id; 62 1.2 glass { 63 1.2 glass if (key) { 64 1.2 glass id = msgget(key, 0); 65 1.2 glass if (id == -1) 66 1.2 glass return -1; 67 1.2 glass } 68 1.2 glass return msgctl(id, IPC_RMID, NULL); 69 1.2 glass } 70 1.1 cgd 71 1.2 glass int shmrm(key, id) 72 1.2 glass key_t key; 73 1.2 glass int id; 74 1.1 cgd { 75 1.2 glass if (key) { 76 1.2 glass id = shmget(key, 0, 0); 77 1.2 glass if (id == -1) 78 1.2 glass return -1; 79 1.2 glass } 80 1.2 glass return shmctl(id, IPC_RMID, NULL); 81 1.2 glass } 82 1.1 cgd 83 1.2 glass int semrm(key, id) 84 1.2 glass key_t key; 85 1.2 glass int id; 86 1.2 glass { 87 1.2 glass union semun arg; 88 1.1 cgd 89 1.2 glass if (key) { 90 1.2 glass id = semget(key, 0, 0); 91 1.2 glass if (id == -1) 92 1.2 glass return -1; 93 1.2 glass } 94 1.2 glass return semctl(id, 0, IPC_RMID, arg); 95 1.1 cgd } 96 1.1 cgd 97 1.2 glass void not_configured() 98 1.1 cgd { 99 1.2 glass signaled++; 100 1.2 glass } 101 1.2 glass 102 1.2 glass int main(argc, argv) 103 1.2 glass int argc; 104 1.2 glass char *argv[]; 105 1.1 cgd 106 1.2 glass { 107 1.2 glass int c, result, errflg, target_id; 108 1.2 glass key_t target_key; 109 1.1 cgd 110 1.2 glass errflg = 0; 111 1.2 glass signal(SIGSYS, not_configured); 112 1.2 glass while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { 113 1.2 glass 114 1.2 glass signaled = 0; 115 1.2 glass switch (c) { 116 1.2 glass case 'q': 117 1.2 glass case 'm': 118 1.2 glass case 's': 119 1.2 glass target_id = atoi(optarg); 120 1.2 glass if (c == 'q') 121 1.2 glass result = msgrm(0, target_id); 122 1.2 glass else if (c == 'm') 123 1.2 glass result = shmrm(0, target_id); 124 1.2 glass else 125 1.2 glass result = semrm(0, target_id); 126 1.2 glass if (result < 0) { 127 1.2 glass errflg++; 128 1.2 glass if (!signaled) 129 1.2 glass warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id); 130 1.2 glass else 131 1.2 glass warnx("%ss are not configured in the running kernel", 132 1.2 glass IPC_TO_STRING(toupper(c))); 133 1.2 glass } 134 1.2 glass break; 135 1.2 glass case 'Q': 136 1.2 glass case 'M': 137 1.2 glass case 'S': 138 1.2 glass target_key = atol(optarg); 139 1.2 glass if (target_key == IPC_PRIVATE) { 140 1.2 glass warnx("can't remove private %ss", IPC_TO_STRING(c)); 141 1.2 glass continue; 142 1.2 glass } 143 1.2 glass if (c == 'Q') 144 1.2 glass result = msgrm(target_key, 0); 145 1.2 glass else if (c == 'M') 146 1.2 glass result = shmrm(target_key, 0); 147 1.2 glass else 148 1.2 glass result = semrm(target_key, 0); 149 1.2 glass if (result < 0) { 150 1.2 glass errflg++; 151 1.2 glass if (!signaled) 152 1.2 glass warn("%key(%ld): ", IPC_TO_STR(c), target_key); 153 1.2 glass else 154 1.2 glass warnx("%ss are not configured in the running kernel", 155 1.2 glass IPC_TO_STRING(c)); 156 1.2 glass } 157 1.2 glass break; 158 1.2 glass case ':': 159 1.4 glass fprintf(stderr, "option -%c requires an argument\n", optopt); 160 1.4 glass usage(); 161 1.2 glass case '?': 162 1.4 glass fprintf(stderr, "unrecognized option: -%c\n", optopt); 163 1.4 glass usage(); 164 1.1 cgd } 165 1.2 glass } 166 1.4 glass 167 1.2 glass if (optind != argc) { 168 1.4 glass fprintf(stderr, "unknown argument: %s\n", argv[optind]); 169 1.4 glass usage(); 170 1.2 glass } 171 1.2 glass exit(errflg); 172 1.1 cgd } 173 1.2 glass 174
Indexes created Thu Oct 23 22:10:10 GMT 2025