ipcrm.c revision 1.4
1 1.1 cgd /* 2 1.2 glass * Copyright (c) 1994 Adam Glass 3 1.2 glass * All rights reserved. 4 1.1 cgd * 5 1.2 glass * Redistribution and use in source and binary forms, with or without 6 1.2 glass * modification, are permitted provided that the following conditions 7 1.2 glass * are met: 8 1.2 glass * 1. Redistributions of source code must retain the above copyright 9 1.2 glass * notice, this list of conditions and the following disclaimer. 10 1.4 glass * 2. Redistributions in binary form must reproduce the above copyright 11 1.4 glass * notice, this list of conditions and the following disclaimer in the 12 1.4 glass * documentation and/or other materials provided with the distribution. 13 1.4 glass * 3. All advertising materials mentioning features or use of this software 14 1.4 glass * must display the following acknowledgement: 15 1.4 glass * This product includes software developed by Adam Glass. 16 1.4 glass * 4. The name of the Author may not be used to endorse or promote products 17 1.2 glass * derived from this software without specific prior written permission. 18 1.2 glass * 19 1.2 glass * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND 20 1.2 glass * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 1.2 glass * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 1.2 glass * ARE DISCLAIMED. IN NO EVENT SHALL Adam Glass BE LIABLE 23 1.2 glass * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 1.2 glass * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 1.2 glass * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.2 glass * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.2 glass * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.2 glass * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.2 glass * SUCH DAMAGE. 30 1.2 glass * 31 1.4 glass * $Id: ipcrm.c,v 1.4 1994/08/07 18:27:42 glass Exp $ 32 1.1 cgd */ 33 1.1 cgd 34 1.1 cgd #include <stdio.h> 35 1.2 glass #include <unistd.h> 36 1.2 glass #include <err.h> 37 1.2 glass #include <signal.h> 38 1.1 cgd #include <sys/types.h> 39 1.1 cgd #include <sys/ipc.h> 40 1.2 glass #include <sys/msg.h> 41 1.1 cgd #include <sys/sem.h> 42 1.1 cgd #include <sys/shm.h> 43 1.1 cgd 44 1.2 glass #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) 45 1.2 glass #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ 46 1.2 glass (x == 'M' ? "shared memory segment" : "semaphore")) 47 1.2 glass 48 1.2 glass int signaled; 49 1.2 glass 50 1.4 glass void usage() 51 1.4 glass { 52 1.4 glass fprintf(stderr, "usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]\n"); 53 1.4 glass fprintf(stderr, " [-Q msgkey] [-M shmkey] [-S semkey] ...]\n"); 54 1.4 glass exit(1); 55 1.4 glass } 56 1.4 glass 57 1.2 glass int msgrm(key, id) 58 1.2 glass key_t key; 59 1.2 glass int id; 60 1.2 glass { 61 1.2 glass if (key) { 62 1.2 glass id = msgget(key, 0); 63 1.2 glass if (id == -1) 64 1.2 glass return -1; 65 1.2 glass } 66 1.2 glass return msgctl(id, IPC_RMID, NULL); 67 1.2 glass } 68 1.1 cgd 69 1.2 glass int shmrm(key, id) 70 1.2 glass key_t key; 71 1.2 glass int id; 72 1.1 cgd { 73 1.2 glass if (key) { 74 1.2 glass id = shmget(key, 0, 0); 75 1.2 glass if (id == -1) 76 1.2 glass return -1; 77 1.2 glass } 78 1.2 glass return shmctl(id, IPC_RMID, NULL); 79 1.2 glass } 80 1.1 cgd 81 1.2 glass int semrm(key, id) 82 1.2 glass key_t key; 83 1.2 glass int id; 84 1.2 glass { 85 1.2 glass union semun arg; 86 1.1 cgd 87 1.2 glass if (key) { 88 1.2 glass id = semget(key, 0, 0); 89 1.2 glass if (id == -1) 90 1.2 glass return -1; 91 1.2 glass } 92 1.2 glass return semctl(id, 0, IPC_RMID, arg); 93 1.1 cgd } 94 1.1 cgd 95 1.2 glass void not_configured() 96 1.1 cgd { 97 1.2 glass signaled++; 98 1.2 glass } 99 1.2 glass 100 1.2 glass int main(argc, argv) 101 1.2 glass int argc; 102 1.2 glass char *argv[]; 103 1.1 cgd 104 1.2 glass { 105 1.2 glass int c, result, errflg, target_id; 106 1.2 glass key_t target_key; 107 1.1 cgd 108 1.2 glass errflg = 0; 109 1.2 glass signal(SIGSYS, not_configured); 110 1.2 glass while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { 111 1.2 glass 112 1.2 glass signaled = 0; 113 1.2 glass switch (c) { 114 1.2 glass case 'q': 115 1.2 glass case 'm': 116 1.2 glass case 's': 117 1.2 glass target_id = atoi(optarg); 118 1.2 glass if (c == 'q') 119 1.2 glass result = msgrm(0, target_id); 120 1.2 glass else if (c == 'm') 121 1.2 glass result = shmrm(0, target_id); 122 1.2 glass else 123 1.2 glass result = semrm(0, target_id); 124 1.2 glass if (result < 0) { 125 1.2 glass errflg++; 126 1.2 glass if (!signaled) 127 1.2 glass warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id); 128 1.2 glass else 129 1.2 glass warnx("%ss are not configured in the running kernel", 130 1.2 glass IPC_TO_STRING(toupper(c))); 131 1.2 glass } 132 1.2 glass break; 133 1.2 glass case 'Q': 134 1.2 glass case 'M': 135 1.2 glass case 'S': 136 1.2 glass target_key = atol(optarg); 137 1.2 glass if (target_key == IPC_PRIVATE) { 138 1.2 glass warnx("can't remove private %ss", IPC_TO_STRING(c)); 139 1.2 glass continue; 140 1.2 glass } 141 1.2 glass if (c == 'Q') 142 1.2 glass result = msgrm(target_key, 0); 143 1.2 glass else if (c == 'M') 144 1.2 glass result = shmrm(target_key, 0); 145 1.2 glass else 146 1.2 glass result = semrm(target_key, 0); 147 1.2 glass if (result < 0) { 148 1.2 glass errflg++; 149 1.2 glass if (!signaled) 150 1.2 glass warn("%key(%ld): ", IPC_TO_STR(c), target_key); 151 1.2 glass else 152 1.2 glass warnx("%ss are not configured in the running kernel", 153 1.2 glass IPC_TO_STRING(c)); 154 1.2 glass } 155 1.2 glass break; 156 1.2 glass case ':': 157 1.4 glass fprintf(stderr, "option -%c requires an argument\n", optopt); 158 1.4 glass usage(); 159 1.2 glass case '?': 160 1.4 glass fprintf(stderr, "unrecognized option: -%c\n", optopt); 161 1.4 glass usage(); 162 1.1 cgd } 163 1.2 glass } 164 1.4 glass 165 1.2 glass if (optind != argc) { 166 1.4 glass fprintf(stderr, "unknown argument: %s\n", argv[optind]); 167 1.4 glass usage(); 168 1.2 glass } 169 1.2 glass exit(errflg); 170 1.1 cgd } 171 1.2 glass 172
Indexes created Thu Oct 23 22:10:10 GMT 2025