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/* $OpenBSD: ipcrm.c,v 1.12 2015/07/26 22:17:34 chl Exp $*/ |
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/* |
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* Copyright (c) 1994 Adam Glass |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by Adam Glass. |
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* 4. The name of the Author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL Adam Glass BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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*/ |
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#include <sys/types.h> |
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#include <sys/ipc.h> |
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#include <sys/msg.h> |
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#include <sys/sem.h> |
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#include <sys/shm.h> |
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#include <stdio.h> |
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#include <unistd.h> |
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#include <limits.h> |
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#include <stdlib.h> |
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#include <ctype.h> |
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#include <err.h> |
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#include <signal.h> |
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#define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem")) |
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#define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \ |
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(x == 'M' ? "shared memory segment" : "semaphore")) |
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int signaled; |
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void usage(void); |
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int msgrm(key_t, int); |
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int shmrm(key_t, int); |
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int semrm(key_t, int); |
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void not_configured(int); |
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void |
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usage(void) |
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{ |
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extern char *__progname; |
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fprintf(stderr, "usage: %s [-M shmkey] [-m shmid] [-Q msgkey]\n" |
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" [-q msqid] [-S semkey] [-s semid] ...\n", |
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__progname); |
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exit(1); |
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} |
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int |
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msgrm(key_t key, int id) |
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{ |
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if (key) { |
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id = msgget(key, 0); |
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if (id == -1) |
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return (-1); |
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} |
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return (msgctl(id, IPC_RMID, NULL)); |
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} |
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int |
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shmrm(key_t key, int id) |
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{ |
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if (key) { |
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id = shmget(key, 0, 0); |
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if (id == -1) |
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return (-1); |
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} |
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return (shmctl(id, IPC_RMID, NULL)); |
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} |
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int |
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semrm(key_t key, int id) |
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{ |
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union semun arg; |
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if (key) { |
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id = semget(key, 0, 0); |
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if (id == -1) |
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return (-1); |
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} |
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return (semctl(id, 0, IPC_RMID, arg)); |
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} |
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/* ARGSUSED */ |
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void |
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not_configured(int signo) |
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{ |
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signaled++; |
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} |
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int |
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main(int argc, char *argv[]) |
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{ |
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int c, result, errflg, target_id; |
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const char *errstr; |
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key_t target_key; |
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errflg = 0; |
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signal(SIGSYS, not_configured); |
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while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { |
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signaled = 0; |
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switch (c) { |
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case 'q': |
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case 'm': |
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case 's': |
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target_id = strtonum(optarg, 0, INT_MAX, &errstr); |
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if (errstr) |
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errx(1, "-%c %s: %s\n", c, optarg, errstr); |
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if (c == 'q') |
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result = msgrm(0, target_id); |
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else if (c == 'm') |
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result = shmrm(0, target_id); |
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else |
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result = semrm(0, target_id); |
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if (result < 0) { |
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errflg++; |
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if (!signaled) |
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warn("%sid(%d)", |
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IPC_TO_STR(toupper(c)), target_id); |
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else |
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warnx("%ss are not configured in the running kernel", |
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IPC_TO_STRING(toupper(c))); |
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} |
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break; |
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case 'Q': |
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case 'M': |
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case 'S': |
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target_key = atol(optarg); |
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if (target_key == IPC_PRIVATE) { |
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warnx("can't remove private %ss", IPC_TO_STRING(c)); |
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continue; |
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} |
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if (c == 'Q') |
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result = msgrm(target_key, 0); |
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else if (c == 'M') |
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result = shmrm(target_key, 0); |
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else |
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result = semrm(target_key, 0); |
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if (result < 0) { |
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errflg++; |
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if (!signaled) |
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warn("%skey(%ld)", IPC_TO_STR(c), |
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target_key); |
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else |
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warnx("%ss are not configured in the running kernel", |
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IPC_TO_STRING(c)); |
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} |
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break; |
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case ':': |
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warnx("option -%c requires an argument", optopt); |
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usage(); |
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default: |
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warnx("unrecognized option: -%c", optopt); |
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usage(); |
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} |
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} |
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if (optind != argc) { |
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warnx("unknown argument: %s", argv[optind]); |
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usage(); |
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} |
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exit(errflg); |
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} |