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 * $Id: ipcrm.c,v 1.1.1.1 1995/10/18 08:45:25 deraadt Exp $ 32 */ 33 34 #include <stdio.h> 35 #include <unistd.h> 36 #include <err.h> 37 #include <signal.h> 38 #include <sys/types.h> 39 #include <sys/ipc.h> 40 #include <sys/msg.h> 41 #include <sys/sem.h> 42 #include <sys/shm.h> 43 44 #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) 45 #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ 46 (x == 'M' ? "shared memory segment" : "semaphore")) 47 48 int signaled; 49 50 void usage() 51 { 52 fprintf(stderr, "usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]\n"); 53 fprintf(stderr, " [-Q msgkey] [-M shmkey] [-S semkey] ...]\n"); 54 exit(1); 55 } 56 57 int msgrm(key, id) 58 key_t key; 59 int id; 60 { 61 if (key) { 62 id = msgget(key, 0); 63 if (id == -1) 64 return -1; 65 } 66 return msgctl(id, IPC_RMID, NULL); 67 } 68 69 int shmrm(key, id) 70 key_t key; 71 int id; 72 { 73 if (key) { 74 id = shmget(key, 0, 0); 75 if (id == -1) 76 return -1; 77 } 78 return shmctl(id, IPC_RMID, NULL); 79 } 80 81 int semrm(key, id) 82 key_t key; 83 int id; 84 { 85 union semun arg; 86 87 if (key) { 88 id = semget(key, 0, 0); 89 if (id == -1) 90 return -1; 91 } 92 return semctl(id, 0, IPC_RMID, arg); 93 } 94 95 void not_configured() 96 { 97 signaled++; 98 } 99 100 int main(argc, argv) 101 int argc; 102 char *argv[]; 103 104 { 105 int c, result, errflg, target_id; 106 key_t target_key; 107 108 errflg = 0; 109 signal(SIGSYS, not_configured); 110 while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { 111 112 signaled = 0; 113 switch (c) { 114 case 'q': 115 case 'm': 116 case 's': 117 target_id = atoi(optarg); 118 if (c == 'q') 119 result = msgrm(0, target_id); 120 else if (c == 'm') 121 result = shmrm(0, target_id); 122 else 123 result = semrm(0, target_id); 124 if (result < 0) { 125 errflg++; 126 if (!signaled) 127 warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id); 128 else 129 warnx("%ss are not configured in the running kernel", 130 IPC_TO_STRING(toupper(c))); 131 } 132 break; 133 case 'Q': 134 case 'M': 135 case 'S': 136 target_key = atol(optarg); 137 if (target_key == IPC_PRIVATE) { 138 warnx("can't remove private %ss", IPC_TO_STRING(c)); 139 continue; 140 } 141 if (c == 'Q') 142 result = msgrm(target_key, 0); 143 else if (c == 'M') 144 result = shmrm(target_key, 0); 145 else 146 result = semrm(target_key, 0); 147 if (result < 0) { 148 errflg++; 149 if (!signaled) 150 warn("%key(%ld): ", IPC_TO_STR(c), target_key); 151 else 152 warnx("%ss are not configured in the running kernel", 153 IPC_TO_STRING(c)); 154 } 155 break; 156 case ':': 157 fprintf(stderr, "option -%c requires an argument\n", optopt); 158 usage(); 159 case '?': 160 fprintf(stderr, "unrecognized option: -%c\n", optopt); 161 usage(); 162 } 163 } 164 165 if (optind != argc) { 166 fprintf(stderr, "unknown argument: %s\n", argv[optind]); 167 usage(); 168 } 169 exit(errflg); 170 } 171 172