7551d83c35
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
303 lines
6.9 KiB
C
303 lines
6.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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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/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#define _WANT_MSG_PROTOTYPES
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#define _WANT_SEM_PROTOTYPES
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#define _WANT_SHM_PROTOTYPES
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#define _KERNEL
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#include <sys/sem.h>
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#include <sys/shm.h>
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#include <sys/msg.h>
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#undef _KERNEL
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#include <ctype.h>
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#include <err.h>
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#include <grp.h>
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#include <kvm.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 "ipc.h"
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static int signaled;
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static int errflg;
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static int rmverbose = 0;
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: ipcrm [-W] [-v[v]]\n"
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" [-q msqid] [-m shmid] [-s semid]\n"
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" [-Q msgkey] [-M shmkey] [-S semkey] ...\n");
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exit(1);
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}
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static int
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msgrm(key_t key, int id)
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{
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if (key == -1 || id == -1) {
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struct msqid_kernel *kxmsqids;
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size_t kxmsqids_len;
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int num;
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kget(X_MSGINFO, &msginfo, sizeof(msginfo));
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kxmsqids_len = sizeof(struct msqid_kernel) * msginfo.msgmni;
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kxmsqids = malloc(kxmsqids_len);
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kget(X_MSQIDS, kxmsqids, kxmsqids_len);
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num = msginfo.msgmni;
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while (num-- && !signaled)
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if (kxmsqids[num].u.msg_qbytes != 0) {
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id = IXSEQ_TO_IPCID(num,
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kxmsqids[num].u.msg_perm);
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if (msgctl(id, IPC_RMID, NULL) < 0) {
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if (rmverbose > 1)
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warn("msqid(%d): ", id);
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errflg++;
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} else
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if (rmverbose)
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printf(
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"Removed %s %d\n",
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IPC_TO_STRING('Q'),
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id);
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}
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return signaled ? -1 : 0; /* errors maybe handled above */
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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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static int
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shmrm(key_t key, int id)
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{
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if (key == -1 || id == -1) {
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struct shmid_kernel *kxshmids;
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size_t kxshmids_len;
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int num;
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kget(X_SHMINFO, &shminfo, sizeof(shminfo));
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kxshmids_len = sizeof(struct shmid_kernel) * shminfo.shmmni;
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kxshmids = malloc(kxshmids_len);
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kget(X_SHMSEGS, kxshmids, kxshmids_len);
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num = shminfo.shmmni;
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while (num-- && !signaled)
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if (kxshmids[num].u.shm_perm.mode & 0x0800) {
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id = IXSEQ_TO_IPCID(num,
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kxshmids[num].u.shm_perm);
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if (shmctl(id, IPC_RMID, NULL) < 0) {
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if (rmverbose > 1)
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warn("shmid(%d): ", id);
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errflg++;
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} else
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if (rmverbose)
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printf(
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"Removed %s %d\n",
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IPC_TO_STRING('M'),
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id);
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}
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return signaled ? -1 : 0; /* errors maybe handled above */
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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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static 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 == -1 || id == -1) {
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struct semid_kernel *kxsema;
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size_t kxsema_len;
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int num;
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kget(X_SEMINFO, &seminfo, sizeof(seminfo));
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kxsema_len = sizeof(struct semid_kernel) * seminfo.semmni;
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kxsema = malloc(kxsema_len);
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kget(X_SEMA, kxsema, kxsema_len);
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num = seminfo.semmni;
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while (num-- && !signaled)
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if ((kxsema[num].u.sem_perm.mode & SEM_ALLOC) != 0) {
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id = IXSEQ_TO_IPCID(num,
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kxsema[num].u.sem_perm);
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if (semctl(id, 0, IPC_RMID, NULL) < 0) {
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if (rmverbose > 1)
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warn("semid(%d): ", id);
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errflg++;
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} else
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if (rmverbose)
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printf(
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"Removed %s %d\n",
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IPC_TO_STRING('S'),
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id);
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}
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return signaled ? -1 : 0; /* errors maybe handled above */
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}
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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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static void
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not_configured(int signo __unused)
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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, target_id;
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key_t target_key;
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while ((c = getopt(argc, argv, "q:m:s:Q:M:S:vWy")) != -1) {
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signaled = 0;
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switch (c) {
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case 'v':
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rmverbose++;
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break;
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case 'y':
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use_sysctl = 0;
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break;
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}
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}
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optind = 1;
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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:vWy")) != -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): ",
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IPC_TO_STR(toupper(c)), target_id);
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else
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warnx(
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"%ss are not configured "
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"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",
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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(%ld): ",
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IPC_TO_STR(c), target_key);
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else
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warnx("%ss are not configured "
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"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 'v':
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case 'y':
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/* Handled in other getopt() loop */
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break;
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case 'W':
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msgrm(-1, 0);
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shmrm(-1, 0);
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semrm(-1, 0);
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break;
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case ':':
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fprintf(stderr,
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"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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