file_cmds-116.9.tar.gz

[apple/file_cmds.git] / ipcrm / ipcrm.c

diff --git a/ipcrm/ipcrm.c b/ipcrm/ipcrm.c
new file mode 100644 (file)
index 0000000..567cfcb
--- /dev/null
+++ b/ipcrm/ipcrm.c
@@ -0,0 +1,183 @@
+/*
+ * 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.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+       "$Id: ipcrm.c,v 1.2.30.1 2005/02/26 03:36:38 nicolai Exp $";
+#endif /* not lint */
+
+#include <ctype.h>
+#include <err.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#if 0
+#include <sys/msg.h>
+#include <sys/sem.h>
+#endif
+#include <sys/shm.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()
+{
+       fprintf(stderr, "%s\n%s\n",
+               "usage: ipcrm [-q msqid] [-m shmid] [-s semid]",
+               "             [-Q msgkey] [-M shmkey] [-S semkey] ...");
+       exit(1);
+}
+
+int msgrm(key, id)
+    key_t key;
+    int id;
+{
+#if 0
+    if (key) {
+       id = msgget(key, 0);
+       if (id == -1)
+           return -1;
+    }
+#endif
+    return msgctl(id, IPC_RMID, NULL);
+}
+
+int shmrm(key, id)
+    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, id)
+    key_t key;
+    int id;
+{
+#if 0
+    union semun arg;
+
+    if (key) {
+       id = semget(key, 0, 0);
+       if (id == -1)
+           return -1;
+    }
+    return semctl(id, 0, IPC_RMID, arg);
+#endif
+}
+
+void not_configured()
+{
+    signaled++;
+}
+
+int main(argc, argv)
+    int argc;
+    char *argv[];
+
+{
+    int c, result, errflg, target_id;
+    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 = 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("%key(%ld): ", IPC_TO_STR(c), target_key);
+               else
+                   warnx("%ss are not configured in the running kernel",
+                         IPC_TO_STRING(c));
+           }
+           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);
+}
+