ipcrm.c revision 1.2
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 1.2 glass * 2. The name of the Author may not be used to endorse or promote products 11 1.2 glass * derived from this software without specific prior written permission. 12 1.2 glass * 13 1.2 glass * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND 14 1.2 glass * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 1.2 glass * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 1.2 glass * ARE DISCLAIMED. IN NO EVENT SHALL Adam Glass BE LIABLE 17 1.2 glass * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 1.2 glass * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 1.2 glass * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 1.2 glass * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 1.2 glass * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 1.2 glass * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 1.2 glass * SUCH DAMAGE. 24 1.2 glass * 25 1.2 glass * $Id: ipcrm.c,v 1.2 1994/03/21 15:46:43 glass Exp $ 26 1.1 cgd */ 27 1.1 cgd 28 1.1 cgd #include <stdio.h> 29 1.2 glass #include <unistd.h> 30 1.2 glass #include <err.h> 31 1.2 glass #include <signal.h> 32 1.1 cgd #include <sys/types.h> 33 1.1 cgd #include <sys/ipc.h> 34 1.2 glass #include <sys/msg.h> 35 1.1 cgd #include <sys/sem.h> 36 1.1 cgd #include <sys/shm.h> 37 1.1 cgd 38 1.2 glass #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) 39 1.2 glass #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ 40 1.2 glass (x == 'M' ? "shared memory segment" : "semaphore")) 41 1.2 glass 42 1.2 glass int signaled; 43 1.2 glass 44 1.2 glass int msgrm(key, id) 45 1.2 glass key_t key; 46 1.2 glass int id; 47 1.2 glass { 48 1.2 glass if (key) { 49 1.2 glass id = msgget(key, 0); 50 1.2 glass if (id == -1) 51 1.2 glass return -1; 52 1.2 glass } 53 1.2 glass return msgctl(id, IPC_RMID, NULL); 54 1.2 glass } 55 1.1 cgd 56 1.2 glass int shmrm(key, id) 57 1.2 glass key_t key; 58 1.2 glass int id; 59 1.1 cgd { 60 1.2 glass if (key) { 61 1.2 glass id = shmget(key, 0, 0); 62 1.2 glass if (id == -1) 63 1.2 glass return -1; 64 1.2 glass } 65 1.2 glass return shmctl(id, IPC_RMID, NULL); 66 1.2 glass } 67 1.1 cgd 68 1.2 glass int semrm(key, id) 69 1.2 glass key_t key; 70 1.2 glass int id; 71 1.2 glass { 72 1.2 glass union semun arg; 73 1.1 cgd 74 1.2 glass if (key) { 75 1.2 glass id = semget(key, 0, 0); 76 1.2 glass if (id == -1) 77 1.2 glass return -1; 78 1.2 glass } 79 1.2 glass return semctl(id, 0, IPC_RMID, arg); 80 1.1 cgd } 81 1.1 cgd 82 1.2 glass void not_configured() 83 1.1 cgd { 84 1.2 glass signaled++; 85 1.2 glass } 86 1.2 glass 87 1.2 glass int main(argc, argv) 88 1.2 glass int argc; 89 1.2 glass char *argv[]; 90 1.1 cgd 91 1.2 glass { 92 1.2 glass int c, result, errflg, target_id; 93 1.2 glass key_t target_key; 94 1.1 cgd 95 1.2 glass errflg = 0; 96 1.2 glass signal(SIGSYS, not_configured); 97 1.2 glass while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { 98 1.2 glass 99 1.2 glass signaled = 0; 100 1.2 glass switch (c) { 101 1.2 glass case 'q': 102 1.2 glass case 'm': 103 1.2 glass case 's': 104 1.2 glass target_id = atoi(optarg); 105 1.2 glass if (c == 'q') 106 1.2 glass result = msgrm(0, target_id); 107 1.2 glass else if (c == 'm') 108 1.2 glass result = shmrm(0, target_id); 109 1.2 glass else 110 1.2 glass result = semrm(0, target_id); 111 1.2 glass if (result < 0) { 112 1.2 glass errflg++; 113 1.2 glass if (!signaled) 114 1.2 glass warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id); 115 1.2 glass else 116 1.2 glass warnx("%ss are not configured in the running kernel", 117 1.2 glass IPC_TO_STRING(toupper(c))); 118 1.2 glass } 119 1.2 glass break; 120 1.2 glass case 'Q': 121 1.2 glass case 'M': 122 1.2 glass case 'S': 123 1.2 glass target_key = atol(optarg); 124 1.2 glass if (target_key == IPC_PRIVATE) { 125 1.2 glass warnx("can't remove private %ss", IPC_TO_STRING(c)); 126 1.2 glass continue; 127 1.2 glass } 128 1.2 glass if (c == 'Q') 129 1.2 glass result = msgrm(target_key, 0); 130 1.2 glass else if (c == 'M') 131 1.2 glass result = shmrm(target_key, 0); 132 1.2 glass else 133 1.2 glass result = semrm(target_key, 0); 134 1.2 glass if (result < 0) { 135 1.2 glass errflg++; 136 1.2 glass if (!signaled) 137 1.2 glass warn("%key(%ld): ", IPC_TO_STR(c), target_key); 138 1.2 glass else 139 1.2 glass warnx("%ss are not configured in the running kernel", 140 1.2 glass IPC_TO_STRING(c)); 141 1.2 glass } 142 1.2 glass break; 143 1.2 glass case ':': 144 1.2 glass errx(1, "option -%c requires an argument", optopt); 145 1.2 glass case '?': 146 1.2 glass errx(1, "unrecognized option: -%c", optopt); 147 1.1 cgd } 148 1.2 glass } 149 1.2 glass if (optind != argc) { 150 1.2 glass fprintf(stderr, "usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]\n"); 151 1.2 glass fprintf(stderr, " [-Q msgkey] [-M shmkey] [-S semkey] ...]\n"); 152 1.2 glass exit(1); 153 1.2 glass } 154 1.2 glass exit(errflg); 155 1.1 cgd } 156 1.2 glass 157
Indexes created Sat Oct 25 00:10:07 GMT 2025