* Makefile.in: Add rules to build ipcrm and ipcs.
* ipcrm.c: New file. * ipcs.c: New file.
This commit is contained in:
Corinna Vinschen
182
winsup/utils/ipcrm.c
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182
winsup/utils/ipcrm.c
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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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#include <sys/cdefs.h>
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#ifndef __FBSDID
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#define __FBSDID(s) const char version[] = (s)
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#endif
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__FBSDID("$FreeBSD: /repoman/r/ncvs/src/usr.bin/ipcrm/ipcrm.c,v 1.11 2002/09/04 23:29:02 dwmalone Exp $");
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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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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#ifndef _KERNEL
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#define _KERNEL 1
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#endif
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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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#ifdef __GNUC__
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#define __unused __attribute__((unused))
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#endif
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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 usage(void)
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{
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fprintf(stderr, "%s\n%s\n",
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"usage: ipcrm [-q msqid] [-m shmid] [-s semid]",
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" [-Q msgkey] [-M shmkey] [-S semkey] ...");
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exit(1);
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}
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int 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 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 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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void not_configured(int signo __unused)
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{
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signaled++;
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}
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int main(int argc, char *argv[])
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{
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int c, result, errflg, target_id;
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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 = atoi(optarg);
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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): ", 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 = strtoull(optarg, NULL, 10);
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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("%ss(%lld): ", IPC_TO_STR(c), 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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fprintf(stderr, "option -%c requires an argument\n", optopt);
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usage();
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case '?':
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fprintf(stderr, "unrecognized option: -%c\n", 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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fprintf(stderr, "unknown argument: %s\n", argv[optind]);
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usage();
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}
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exit(errflg);
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}
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