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 * $FreeBSD: src/usr.bin/ipcrm/ipcrm.c,v 1.6 1999/08/28 01:02:14 peter Exp $ 32 * $DragonFly: src/usr.bin/ipcrm/ipcrm.c,v 1.4 2004/11/19 18:35:29 liamfoy Exp $ 33 */ 34 35 #include <ctype.h> 36 #include <err.h> 37 #include <signal.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <unistd.h> 41 #include <sys/types.h> 42 #include <sys/ipc.h> 43 #include <sys/msg.h> 44 #include <sys/sem.h> 45 #include <sys/shm.h> 46 47 #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) 48 #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ 49 (x == 'M' ? "shared memory segment" : "semaphore")) 50 51 volatile sig_atomic_t signaled; 52 53 static void usage(void); 54 static int msgrm(key_t, int); 55 static int shmrm(key_t, int); 56 static int semrm(key_t, int); 57 static void not_configured(int); 58 59 static void 60 usage(void) 61 { 62 fprintf(stderr, "%s\n%s\n", 63 "usage: ipcrm [-q msqid] [-m shmid] [-s semid]", 64 " [-Q msgkey] [-M shmkey] [-S semkey] ..."); 65 exit(1); 66 } 67 68 static int 69 msgrm(key_t key, int id) 70 { 71 if (key) { 72 id = msgget(key, 0); 73 if (id == -1) 74 return -1; 75 } 76 return msgctl(id, IPC_RMID, NULL); 77 } 78 79 static int 80 shmrm(key_t key, int id) 81 { 82 if (key) { 83 id = shmget(key, 0, 0); 84 if (id == -1) 85 return -1; 86 } 87 return shmctl(id, IPC_RMID, NULL); 88 } 89 90 static int 91 semrm(key_t key, int id) 92 { 93 union semun arg; 94 95 if (key) { 96 id = semget(key, 0, 0); 97 if (id == -1) 98 return -1; 99 } 100 return semctl(id, 0, IPC_RMID, arg); 101 } 102 103 static void 104 not_configured(int signo __unused) 105 { 106 signaled++; 107 } 108 109 int 110 main(int argc, char **argv) 111 { 112 int c, result, errflg, target_id; 113 key_t target_key; 114 115 errflg = 0; 116 signal(SIGSYS, not_configured); 117 while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { 118 119 signaled = 0; 120 switch (c) { 121 case 'q': 122 case 'm': 123 case 's': 124 target_id = atoi(optarg); 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 = atol(optarg); 144 if (target_key == IPC_PRIVATE) { 145 warnx("can't remove private %ss", IPC_TO_STRING(c)); 146 continue; 147 } 148 if (c == 'Q') 149 result = msgrm(target_key, 0); 150 else if (c == 'M') 151 result = shmrm(target_key, 0); 152 else 153 result = semrm(target_key, 0); 154 if (result < 0) { 155 errflg++; 156 if (!signaled) 157 warn("%s key %ld aborted", IPC_TO_STR(c), target_key); 158 else 159 warnx("%ss are not configured in the running kernel", 160 IPC_TO_STRING(c)); 161 } 162 break; 163 case ':': 164 warnx("option -%c requires an argument\n", optopt); 165 usage(); 166 case '?': 167 warnx("unrecognized option: -%c\n", optopt); 168 usage(); 169 } 170 } 171 172 if (optind != argc) { 173 warnx("unknown argument: %s\n", argv[optind]); 174 usage(); 175 } 176 exit(errflg); 177 } 178 179