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/* $OpenBSD: ipcrm.c,v 1.11 2015/04/18 18:28:37 deraadt Exp $*/
/*
* Copyright (c) 1994 Adam Glass
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Adam Glass.
* 4. The name of the Author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Adam Glass BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <stdio.h>
#include <unistd.h>
#include <limits.h>
#include <stdlib.h>
#include <ctype.h>
#include <err.h>
#include <signal.h>
#define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem"))
#define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \
(x == 'M' ? "shared memory segment" : "semaphore"))
int signaled;
void usage(void);
int msgrm(key_t, int);
int shmrm(key_t, int);
int semrm(key_t, int);
void not_configured(int);
void
usage(void)
{
extern char *__progname;
fprintf(stderr, "usage: %s [-M shmkey] [-m shmid] [-Q msgkey]\n"
" [-q msqid] [-S semkey] [-s semid] ...\n",
__progname);
exit(1);
}
int
msgrm(key_t key, int id)
{
if (key) {
id = msgget(key, 0);
if (id == -1)
return (-1);
}
return (msgctl(id, IPC_RMID, NULL));
}
int
shmrm(key_t key, int id)
{
if (key) {
id = shmget(key, 0, 0);
if (id == -1)
return (-1);
}
return (shmctl(id, IPC_RMID, NULL));
}
int
semrm(key_t key, int id)
{
union semun arg;
if (key) {
id = semget(key, 0, 0);
if (id == -1)
return (-1);
}
return (semctl(id, 0, IPC_RMID, arg));
}
/* ARGSUSED */
void
not_configured(int signo)
{
signaled++;
}
int
main(int argc, char *argv[])
{
int c, result, errflg, target_id;
const char *errstr;
key_t target_key;
errflg = 0;
signal(SIGSYS, not_configured);
while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) {
signaled = 0;
switch (c) {
case 'q':
case 'm':
case 's':
target_id = strtonum(optarg, 0, INT_MAX, &errstr);
if (errstr)
errx(1, "-%c %s: %s\n", c, optarg, &errstr);
if (c == 'q')
result = msgrm(0, target_id);
else if (c == 'm')
result = shmrm(0, target_id);
else
result = semrm(0, target_id);
if (result < 0) {
errflg++;
if (!signaled)
warn("%sid(%d)",
IPC_TO_STR(toupper(c)), target_id);
else
warnx("%ss are not configured in the running kernel",
IPC_TO_STRING(toupper(c)));
}
break;
case 'Q':
case 'M':
case 'S':
target_key = atol(optarg);
if (target_key == IPC_PRIVATE) {
warnx("can't remove private %ss", IPC_TO_STRING(c));
continue;
}
if (c == 'Q')
result = msgrm(target_key, 0);
else if (c == 'M')
result = shmrm(target_key, 0);
else
result = semrm(target_key, 0);
if (result < 0) {
errflg++;
if (!signaled)
warn("%skey(%ld)", IPC_TO_STR(c),
target_key);
else
warnx("%ss are not configured in the running kernel",
IPC_TO_STRING(c));
}
break;
case ':':
warnx("option -%c requires an argument", optopt);
usage();
default:
warnx("unrecognized option: -%c", optopt);
usage();
}
}
if (optind != argc) {
warnx("unknown argument: %s", argv[optind]);
usage();
}
exit(errflg);
}
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