ipcrm.c revision 1.6
1 1.6 drochner /* $NetBSD: ipcrm.c,v 1.6 1997/09/09 11:06:31 drochner Exp $ */ 2 1.5 tls 3 1.1 cgd /* 4 1.2 glass * Copyright (c) 1994 Adam Glass 5 1.2 glass * All rights reserved. 6 1.1 cgd * 7 1.2 glass * Redistribution and use in source and binary forms, with or without 8 1.2 glass * modification, are permitted provided that the following conditions 9 1.2 glass * are met: 10 1.2 glass * 1. Redistributions of source code must retain the above copyright 11 1.2 glass * notice, this list of conditions and the following disclaimer. 12 1.4 glass * 2. Redistributions in binary form must reproduce the above copyright 13 1.4 glass * notice, this list of conditions and the following disclaimer in the 14 1.4 glass * documentation and/or other materials provided with the distribution. 15 1.4 glass * 3. All advertising materials mentioning features or use of this software 16 1.4 glass * must display the following acknowledgement: 17 1.4 glass * This product includes software developed by Adam Glass. 18 1.4 glass * 4. The name of the Author may not be used to endorse or promote products 19 1.2 glass * derived from this software without specific prior written permission. 20 1.2 glass * 21 1.2 glass * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND 22 1.2 glass * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 1.2 glass * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 1.2 glass * ARE DISCLAIMED. IN NO EVENT SHALL Adam Glass BE LIABLE 25 1.2 glass * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 1.2 glass * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 1.2 glass * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 1.2 glass * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 1.2 glass * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 1.2 glass * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 1.2 glass * SUCH DAMAGE. 32 1.2 glass * 33 1.6 drochner * $NetBSD: ipcrm.c,v 1.6 1997/09/09 11:06:31 drochner Exp $ 34 1.1 cgd */ 35 1.1 cgd 36 1.1 cgd #include <stdio.h> 37 1.6 drochner #include <stdlib.h> 38 1.2 glass #include <unistd.h> 39 1.6 drochner #include <ctype.h> 40 1.2 glass #include <err.h> 41 1.2 glass #include <signal.h> 42 1.1 cgd #include <sys/types.h> 43 1.1 cgd #include <sys/ipc.h> 44 1.2 glass #include <sys/msg.h> 45 1.1 cgd #include <sys/sem.h> 46 1.1 cgd #include <sys/shm.h> 47 1.1 cgd 48 1.2 glass #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) 49 1.2 glass #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ 50 1.2 glass (x == 'M' ? "shared memory segment" : "semaphore")) 51 1.2 glass 52 1.2 glass int signaled; 53 1.2 glass 54 1.6 drochner void usage __P((void)); 55 1.6 drochner int msgrm __P((key_t, int)); 56 1.6 drochner int shmrm __P((key_t, int)); 57 1.6 drochner int semrm __P((key_t, int)); 58 1.6 drochner void not_configured __P((void)); 59 1.6 drochner int main __P((int, char *[])); 60 1.6 drochner 61 1.4 glass void usage() 62 1.4 glass { 63 1.4 glass fprintf(stderr, "usage: ipcrm [ [-q msqid] [-m shmid] [-s semid]\n"); 64 1.4 glass fprintf(stderr, " [-Q msgkey] [-M shmkey] [-S semkey] ...]\n"); 65 1.4 glass exit(1); 66 1.4 glass } 67 1.4 glass 68 1.2 glass int msgrm(key, id) 69 1.2 glass key_t key; 70 1.2 glass int id; 71 1.2 glass { 72 1.2 glass if (key) { 73 1.2 glass id = msgget(key, 0); 74 1.2 glass if (id == -1) 75 1.2 glass return -1; 76 1.2 glass } 77 1.2 glass return msgctl(id, IPC_RMID, NULL); 78 1.2 glass } 79 1.1 cgd 80 1.2 glass int shmrm(key, id) 81 1.2 glass key_t key; 82 1.2 glass int id; 83 1.1 cgd { 84 1.2 glass if (key) { 85 1.2 glass id = shmget(key, 0, 0); 86 1.2 glass if (id == -1) 87 1.2 glass return -1; 88 1.2 glass } 89 1.2 glass return shmctl(id, IPC_RMID, NULL); 90 1.2 glass } 91 1.1 cgd 92 1.2 glass int semrm(key, id) 93 1.2 glass key_t key; 94 1.2 glass int id; 95 1.2 glass { 96 1.2 glass union semun arg; 97 1.1 cgd 98 1.2 glass if (key) { 99 1.2 glass id = semget(key, 0, 0); 100 1.2 glass if (id == -1) 101 1.2 glass return -1; 102 1.2 glass } 103 1.2 glass return semctl(id, 0, IPC_RMID, arg); 104 1.1 cgd } 105 1.1 cgd 106 1.2 glass void not_configured() 107 1.1 cgd { 108 1.2 glass signaled++; 109 1.2 glass } 110 1.2 glass 111 1.2 glass int main(argc, argv) 112 1.2 glass int argc; 113 1.2 glass char *argv[]; 114 1.1 cgd 115 1.2 glass { 116 1.2 glass int c, result, errflg, target_id; 117 1.2 glass key_t target_key; 118 1.1 cgd 119 1.2 glass errflg = 0; 120 1.6 drochner signal(SIGSYS, (void (*) __P((int)))not_configured); 121 1.2 glass while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { 122 1.2 glass 123 1.2 glass signaled = 0; 124 1.2 glass switch (c) { 125 1.2 glass case 'q': 126 1.2 glass case 'm': 127 1.2 glass case 's': 128 1.2 glass target_id = atoi(optarg); 129 1.2 glass if (c == 'q') 130 1.2 glass result = msgrm(0, target_id); 131 1.2 glass else if (c == 'm') 132 1.2 glass result = shmrm(0, target_id); 133 1.2 glass else 134 1.2 glass result = semrm(0, target_id); 135 1.2 glass if (result < 0) { 136 1.2 glass errflg++; 137 1.2 glass if (!signaled) 138 1.2 glass warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id); 139 1.2 glass else 140 1.2 glass warnx("%ss are not configured in the running kernel", 141 1.2 glass IPC_TO_STRING(toupper(c))); 142 1.2 glass } 143 1.2 glass break; 144 1.2 glass case 'Q': 145 1.2 glass case 'M': 146 1.2 glass case 'S': 147 1.2 glass target_key = atol(optarg); 148 1.2 glass if (target_key == IPC_PRIVATE) { 149 1.2 glass warnx("can't remove private %ss", IPC_TO_STRING(c)); 150 1.2 glass continue; 151 1.2 glass } 152 1.2 glass if (c == 'Q') 153 1.2 glass result = msgrm(target_key, 0); 154 1.2 glass else if (c == 'M') 155 1.2 glass result = shmrm(target_key, 0); 156 1.2 glass else 157 1.2 glass result = semrm(target_key, 0); 158 1.2 glass if (result < 0) { 159 1.2 glass errflg++; 160 1.2 glass if (!signaled) 161 1.6 drochner warn("%skey(%ld): ", IPC_TO_STR(c), target_key); 162 1.2 glass else 163 1.2 glass warnx("%ss are not configured in the running kernel", 164 1.2 glass IPC_TO_STRING(c)); 165 1.2 glass } 166 1.2 glass break; 167 1.2 glass case ':': 168 1.4 glass fprintf(stderr, "option -%c requires an argument\n", optopt); 169 1.4 glass usage(); 170 1.2 glass case '?': 171 1.4 glass fprintf(stderr, "unrecognized option: -%c\n", optopt); 172 1.4 glass usage(); 173 1.1 cgd } 174 1.2 glass } 175 1.4 glass 176 1.2 glass if (optind != argc) { 177 1.4 glass fprintf(stderr, "unknown argument: %s\n", argv[optind]); 178 1.4 glass usage(); 179 1.2 glass } 180 1.2 glass exit(errflg); 181 1.1 cgd } 182 1.2 glass 183
Indexes created Sat Oct 25 00:10:07 GMT 2025