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Diffstat (limited to 'usr.bin/ipcrm/ipcrm.c')
-rw-r--r--usr.bin/ipcrm/ipcrm.c313
1 files changed, 313 insertions, 0 deletions
diff --git a/usr.bin/ipcrm/ipcrm.c b/usr.bin/ipcrm/ipcrm.c
new file mode 100644
index 0000000..b4d3706
--- /dev/null
+++ b/usr.bin/ipcrm/ipcrm.c
@@ -0,0 +1,313 @@
+/* $NetBSD: ipcrm.c,v 1.16 2009/01/18 01:06:42 lukem 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 <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <err.h>
+#include <signal.h>
+#include <sys/sysctl.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"))
+
+static sig_atomic_t signaled;
+
+static void usage(void) __dead;
+static int msgrm(key_t, int);
+static int shmrm(key_t, int);
+static int semrm(key_t, int);
+static int msgrmall(void);
+static int shmrmall(void);
+static int semrmall(void);
+static void not_configured(int);
+
+static void
+usage(void)
+{
+ (void)fprintf(stderr, "Usage: %s [-M shmkey] [-m shmid] [-Q msgkey]\n",
+ getprogname());
+ (void)fprintf(stderr, "\t[-q msqid] [-S semkey] [-s semid] ...\n");
+ exit(1);
+}
+
+static int
+msgrm(key_t key, int id)
+{
+ 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) {
+ id = shmget(key, 0, 0);
+ if (id == -1)
+ return -1;
+ }
+ return shmctl(id, IPC_RMID, NULL);
+}
+
+static int
+semrm(key_t key, int id)
+{
+
+ if (key) {
+ id = semget(key, 0, 0);
+ if (id == -1)
+ return -1;
+ }
+ return semctl(id, 0, IPC_RMID, NULL);
+}
+
+static int
+msgrmall(void)
+{
+ int mib[4];
+ struct msg_sysctl_info *msgsi;
+ int32_t i;
+ size_t len;
+ int result = 0;
+
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_SYSVIPC;
+ mib[2] = KERN_SYSVIPC_INFO;
+ mib[3] = KERN_SYSVIPC_MSG_INFO;
+
+ if (sysctl(mib, 4, NULL, &len, NULL, 0) == -1)
+ err(1, "sysctl(KERN_SYSVIPC_MSG_INFO)");
+
+ if ((msgsi = malloc(len)) == NULL)
+ err(1, "malloc");
+ if (sysctl(mib, 4, msgsi, &len, NULL, 0) == -1) {
+ free(msgsi);
+ err(1, "sysctl(KERN_SYSVIPC_MSG_INFO)");
+ }
+
+ for (i = 0; i < msgsi->msginfo.msgmni; i++) {
+ struct msgid_ds_sysctl *msgptr = &msgsi->msgids[i];
+ if (msgptr->msg_qbytes != 0)
+ result -= msgrm((key_t)0,
+ (int)IXSEQ_TO_IPCID(i, msgptr->msg_perm));
+ }
+ free(msgsi);
+ return result;
+}
+
+static int
+shmrmall(void)
+{
+ int mib[4];
+ struct shm_sysctl_info *shmsi;
+ size_t i, len;
+ int result = 0;
+
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_SYSVIPC;
+ mib[2] = KERN_SYSVIPC_INFO;
+ mib[3] = KERN_SYSVIPC_SHM_INFO;
+
+ if (sysctl(mib, 4, NULL, &len, NULL, 0) == -1)
+ err(1, "sysctl(KERN_SYSVIPC_SHM_INFO)");
+
+ if ((shmsi = malloc(len)) == NULL)
+ err(1, "malloc");
+ if (sysctl(mib, 4, shmsi, &len, NULL, 0) == -1) {
+ free(shmsi);
+ err(1, "sysctl(KERN_SYSVIPC_SHM_INFO)");
+ }
+
+ for (i = 0; i < shmsi->shminfo.shmmni; i++) {
+ struct shmid_ds_sysctl *shmptr = &shmsi->shmids[i];
+ if (shmptr->shm_perm.mode & 0x0800)
+ result -= shmrm((key_t)0,
+ (int)IXSEQ_TO_IPCID(i, shmptr->shm_perm));
+ }
+ free(shmsi);
+ return result;
+}
+
+static int
+semrmall(void)
+{
+ int mib[4];
+ struct sem_sysctl_info *semsi;
+ size_t len;
+ int32_t i;
+ int result = 0;
+
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_SYSVIPC;
+ mib[2] = KERN_SYSVIPC_INFO;
+ mib[3] = KERN_SYSVIPC_SEM_INFO;
+
+ if (sysctl(mib, 4, NULL, &len, NULL, 0) == -1)
+ err(1, "sysctl(KERN_SYSVIPC_SEM_INFO)");
+
+ if ((semsi = malloc(len)) == NULL)
+ err(1, "malloc");
+ if (sysctl(mib, 4, semsi, &len, NULL, 0) == -1) {
+ free(semsi);
+ err(1, "sysctl(KERN_SYSVIPC_SEM_INFO)");
+ }
+
+ for (i = 0; i < semsi->seminfo.semmni; i++) {
+ struct semid_ds_sysctl *semptr = &semsi->semids[i];
+ if ((semptr->sem_perm.mode & SEM_ALLOC) != 0)
+ result -= semrm((key_t)0,
+ (int)IXSEQ_TO_IPCID(i, semptr->sem_perm));
+ }
+ free(semsi);
+ return result;
+}
+
+static void
+/*ARGSUSED*/
+not_configured(int n)
+{
+ signaled++;
+}
+
+int
+main(int argc, char *argv[])
+{
+ int c, result, errflg, target_id;
+ key_t target_key;
+
+ setprogname(argv[0]);
+ errflg = 0;
+ (void)signal(SIGSYS, not_configured);
+ while ((c = getopt(argc, argv, "q:m:s:Q:M:S:")) != -1) {
+ signaled = 0;
+ target_id = 0;
+ target_key = 0;
+ result = 0;
+
+ if (optarg != NULL && strcmp(optarg, "all") == 0) {
+ switch (c) {
+ case 'm':
+ case 'M':
+ result = shmrmall();
+ break;
+ case 'q':
+ case 'Q':
+ result = msgrmall();
+ break;
+ case 's':
+ case 'S':
+ result = semrmall();
+ break;
+ default:
+ usage();
+ }
+ } else {
+ switch (c) {
+ case 'q':
+ case 'm':
+ case 's':
+ target_id = atoi(optarg);
+ 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;
+ }
+ break;
+ default:
+ usage();
+ }
+ switch (c) {
+ case 'q':
+ result = msgrm((key_t)0, target_id);
+ break;
+ case 'm':
+ result = shmrm((key_t)0, target_id);
+ break;
+ case 's':
+ result = semrm((key_t)0, target_id);
+ break;
+ case 'Q':
+ result = msgrm(target_key, 0);
+ break;
+ case 'M':
+ result = shmrm(target_key, 0);
+ break;
+ case 'S':
+ result = semrm(target_key, 0);
+ break;
+ }
+ }
+ if (result < 0) {
+ if (!signaled) {
+ if (target_id) {
+ warn("%sid(%d): ",
+ IPC_TO_STR(toupper(c)), target_id);
+ errflg++;
+ } else if (target_key) {
+ warn("%skey(%ld): ", IPC_TO_STR(c),
+ (long)target_key);
+ errflg++;
+ }
+ } else {
+ errflg++;
+ warnx("%ss are not configured in "
+ "the running kernel",
+ IPC_TO_STRING(toupper(c)));
+ }
+ }
+ }
+
+ if (optind != argc) {
+ warnx("Unknown argument: %s", argv[optind]);
+ usage();
+ }
+ return errflg;
+}
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