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 32#include <sys/cdefs.h> 33#ifndef lint 34__used static const char rcsid[] = 35 "$Id: ipcrm.c,v 1.3 2005/02/03 07:31:33 josborne Exp $"; 36#endif /* not lint */ 37 38#include <ctype.h> 39#include <err.h> 40#include <signal.h> 41#include <stdio.h> 42#include <stdlib.h> 43#include <unistd.h> 44#include <sys/types.h> 45#include <sys/ipc.h> 46#include <sys/msg.h> 47#include <sys/sem.h> 48#include <sys/shm.h> 49 50#define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) 51#define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ 52 (x == 'M' ? "shared memory segment" : "semaphore")) 53 54int signaled; 55 56static void usage(void) 57{ 58 fprintf(stderr, "%s\n%s\n", 59 "usage: ipcrm [-q msqid] [-m shmid] [-s semid]", 60 " [-Q msgkey] [-M shmkey] [-S semkey] ..."); 61 exit(1); 62} 63 64static int msgrm(key_t key, int id) 65{ 66 if (key) { 67 id = msgget(key, 0); 68 if (id == -1) 69 return -1; 70 } 71 return msgctl(id, IPC_RMID, NULL); 72} 73 74static int shmrm(key_t key, int id) 75{ 76 if (key) { 77 id = shmget(key, 0, 0); 78 if (id == -1) 79 return -1; 80 } 81 return shmctl(id, IPC_RMID, NULL); 82} 83 84static int semrm(key_t key, int id) 85{ 86 union semun arg; 87 88 if (key) { 89 id = semget(key, 0, 0); 90 if (id == -1) 91 return -1; 92 } 93 return semctl(id, 0, IPC_RMID, arg); 94} 95 96static void not_configured(__unused int unused) 97{ 98 signaled++; 99} 100 101int main(argc, argv) 102 int argc; 103 char *argv[]; 104 105{ 106 int c, result, errflg, target_id; 107 key_t target_key; 108 char *en; 109 110 errflg = 0; 111 signal(SIGSYS, not_configured); 112 while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { 113 114 signaled = 0; 115 switch (c) { 116 case 'q': 117 case 'm': 118 case 's': 119 target_id = (int)strtol(optarg, &en, 0); 120 if (*en) { 121 warnx("%s: '%s' is not a number", 122 IPC_TO_STRING(toupper(c)), optarg); 123 continue; 124 } 125 if (c == 'q') 126 result = msgrm(0, target_id); 127 else if (c == 'm') 128 result = shmrm(0, target_id); 129 else 130 result = semrm(0, target_id); 131 if (result < 0) { 132 errflg++; 133 if (!signaled) 134 warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id); 135 else 136 warnx("%ss are not configured in the running kernel", 137 IPC_TO_STRING(toupper(c))); 138 } 139 break; 140 case 'Q': 141 case 'M': 142 case 'S': 143 target_key = (key_t)strtol(optarg, &en, 0); 144 if (*en) { 145 warnx("%s: '%s' is not a number", IPC_TO_STRING(c), optarg); 146 continue; 147 } 148 if (target_key == IPC_PRIVATE) { 149 warnx("can't remove private %ss", IPC_TO_STRING(c)); 150 continue; 151 } 152 if (c == 'Q') 153 result = msgrm(target_key, 0); 154 else if (c == 'M') 155 result = shmrm(target_key, 0); 156 else 157 result = semrm(target_key, 0); 158 if (result < 0) { 159 errflg++; 160 if (!signaled) 161 warn("%s key(%d): ", IPC_TO_STRING(c), target_key); 162 else 163 warnx("%ss are not configured in the running kernel", 164 IPC_TO_STRING(c)); 165 } 166 break; 167 case ':': 168 fprintf(stderr, "option -%c requires an argument\n", optopt); 169 usage(); 170 case '?': 171 fprintf(stderr, "unrecognized option: -%c\n", optopt); 172 usage(); 173 } 174 } 175 176 if (optind != argc) { 177 fprintf(stderr, "unknown argument: %s\n", argv[optind]); 178 usage(); 179 } 180 exit(errflg); 181} 182