/*
* 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#define _KERNEL
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/msg.h>
#undef _KERNEL
#include <ctype.h>
#include <err.h>
#include <grp.h>
#include <kvm.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "ipc.h"
int signaled;
int errflg;
int rmverbose = 0;
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)
{
fprintf(stderr,
"usage: ipcrm [-W] [-v[v]]\n"
" [-q msqid] [-m shmid] [-s semid]\n"
" [-Q msgkey] [-M shmkey] [-S semkey] ...\n");
exit(1);
}
int
msgrm(key_t key, int id)
{
if (key == -1 || id == -1) {
struct msqid_kernel *kxmsqids;
size_t kxmsqids_len;
int num;
kget(X_MSGINFO, &msginfo, sizeof(msginfo));
kxmsqids_len = sizeof(struct msqid_kernel) * msginfo.msgmni;
kxmsqids = malloc(kxmsqids_len);
kget(X_MSQIDS, kxmsqids, kxmsqids_len);
num = msginfo.msgmni;
while (num-- && !signaled)
if (kxmsqids[num].u.msg_qbytes != 0) {
id = IXSEQ_TO_IPCID(num,
kxmsqids[num].u.msg_perm);
if (msgctl(id, IPC_RMID, NULL) < 0) {
if (rmverbose > 1)
warn("msqid(%d): ", id);
errflg++;
} else
if (rmverbose)
printf(
"Removed %s %d\n",
IPC_TO_STRING('Q'),
id);
}
return signaled ? -1 : 0; /* errors maybe handled above */
}
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 == -1 || id == -1) {
struct shmid_kernel *kxshmids;
size_t kxshmids_len;
int num;
kget(X_SHMINFO, &shminfo, sizeof(shminfo));
kxshmids_len = sizeof(struct shmid_kernel) * shminfo.shmmni;
kxshmids = malloc(kxshmids_len);
kget(X_SHMSEGS, kxshmids, kxshmids_len);
num = shminfo.shmmni;
while (num-- && !signaled)
if (kxshmids[num].u.shm_perm.mode & 0x0800) {
id = IXSEQ_TO_IPCID(num,
kxshmids[num].u.shm_perm);
if (shmctl(id, IPC_RMID, NULL) < 0) {
if (rmverbose > 1)
warn("shmid(%d): ", id);
errflg++;
} else
if (rmverbose)
printf(
"Removed %s %d\n",
IPC_TO_STRING('M'),
id);
}
return signaled ? -1 : 0; /* errors maybe handled above */
}
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 == -1 || id == -1) {
struct semid_kernel *kxsema;
size_t kxsema_len;
int num;
kget(X_SEMINFO, &seminfo, sizeof(seminfo));
kxsema_len = sizeof(struct semid_kernel) * seminfo.semmni;
kxsema = malloc(kxsema_len);
kget(X_SEMA, kxsema, kxsema_len);
num = seminfo.semmni;
while (num-- && !signaled)
if ((kxsema[num].u.sem_perm.mode & SEM_ALLOC) != 0) {
id = IXSEQ_TO_IPCID(num,
kxsema[num].u.sem_perm);
if (semctl(id, IPC_RMID, NULL) < 0) {
if (rmverbose > 1)
warn("semid(%d): ", id);
errflg++;
} else
if (rmverbose)
printf(
"Removed %s %d\n",
IPC_TO_STRING('S'),
id);
}
return signaled ? -1 : 0; /* errors maybe handled above */
}
if (key) {
id = semget(key, 0, 0);
if (id == -1)
return -1;
}
return semctl(id, 0, IPC_RMID, arg);
}
void
not_configured(int signo __unused)
{
signaled++;
}
int
main(int argc, char *argv[])
{
int c, result, target_id;
key_t target_key;
while ((c = getopt(argc, argv, "q:m:s:Q:M:S:vWy")) != -1) {
signaled = 0;
switch (c) {
case 'v':
rmverbose++;
break;
case 'y':
use_sysctl = 0;
break;
}
}
optind = 1;
errflg = 0;
signal(SIGSYS, not_configured);
while ((c = getopt(argc, argv, "q:m:s:Q:M:S:vWy")) != -1) {
signaled = 0;
switch (c) {
case 'q':
case 'm':
case 's':
target_id = atoi(optarg);
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("%ss(%ld): ",
IPC_TO_STR(c), target_key);
else
warnx("%ss are not configured "
"in the running kernel",
IPC_TO_STRING(c));
}
break;
case 'v':
case 'y':
/* Handled in other getopt() loop */
break;
case 'W':
msgrm(-1, 0);
shmrm(-1, 0);
semrm(-1, 0);
break;
case ':':
fprintf(stderr,
"option -%c requires an argument\n", optopt);
usage();
case '?':
fprintf(stderr, "unrecognized option: -%c\n", optopt);
usage();
}
}
if (optind != argc) {
fprintf(stderr, "unknown argument: %s\n", argv[optind]);
usage();
}
exit(errflg);
}
