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-rw-r--r--usr.bin/ipcrm/ipcrm.c298
1 files changed, 298 insertions, 0 deletions
diff --git a/usr.bin/ipcrm/ipcrm.c b/usr.bin/ipcrm/ipcrm.c
new file mode 100644
index 000000000000..0e0d40837127
--- /dev/null
+++ b/usr.bin/ipcrm/ipcrm.c
@@ -0,0 +1,298 @@
+/*-
+ * SPDX-License-Identifier: BSD-4-Clause
+ *
+ * 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/param.h>
+#define _WANT_SYSVMSG_INTERNALS
+#include <sys/msg.h>
+#define _WANT_SYSVSEM_INTERNALS
+#define _WANT_SEMUN
+#include <sys/sem.h>
+#define _WANT_SYSVSHM_INTERNALS
+#include <sys/shm.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <grp.h>
+#include <kvm.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "ipc.h"
+
+static int signaled;
+static int errflg;
+static int rmverbose = 0;
+
+static 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);
+}
+
+static 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);
+}
+
+static 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);
+}
+
+static 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, 0, 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);
+}
+
+static 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);
+}
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