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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 19:10:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 19:10:49 +0000
commitcfe5e3905201349e9cf3f95d52ff4bd100bde37d (patch)
treed0baf160cbee3195249d095f85e52d20c21acf02 /sys-utils/ipcmk.c
parentInitial commit. (diff)
downloadutil-linux-cfe5e3905201349e9cf3f95d52ff4bd100bde37d.tar.xz
util-linux-cfe5e3905201349e9cf3f95d52ff4bd100bde37d.zip
Adding upstream version 2.39.3.upstream/2.39.3
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sys-utils/ipcmk.c')
-rw-r--r--sys-utils/ipcmk.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/sys-utils/ipcmk.c b/sys-utils/ipcmk.c
new file mode 100644
index 0000000..9c1f608
--- /dev/null
+++ b/sys-utils/ipcmk.c
@@ -0,0 +1,171 @@
+/*
+ * ipcmk.c - used to create ad-hoc IPC segments
+ *
+ * Copyright (C) 2008 Hayden A. James (hayden.james@gmail.com)
+ * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <errno.h>
+#include <getopt.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#include <sys/time.h>
+
+#include "c.h"
+#include "nls.h"
+#include "randutils.h"
+#include "strutils.h"
+#include "closestream.h"
+
+static int create_shm(size_t size, int permission)
+{
+ key_t key;
+
+ ul_random_get_bytes(&key, sizeof(key));
+ return shmget(key, size, permission | IPC_CREAT);
+}
+
+static int create_msg(int permission)
+{
+ key_t key;
+
+ ul_random_get_bytes(&key, sizeof(key));
+ return msgget(key, permission | IPC_CREAT);
+}
+
+static int create_sem(int nsems, int permission)
+{
+ key_t key;
+
+ ul_random_get_bytes(&key, sizeof(key));
+ return semget(key, nsems, permission | IPC_CREAT);
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+ FILE *out = stdout;
+ fputs(USAGE_HEADER, out);
+ fprintf(out, _(" %s [options]\n"), program_invocation_short_name);
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_("Create various IPC resources.\n"), out);
+
+ fputs(USAGE_OPTIONS, out);
+ fputs(_(" -M, --shmem <size> create shared memory segment of size <size>\n"), out);
+ fputs(_(" -S, --semaphore <number> create semaphore array with <number> elements\n"), out);
+ fputs(_(" -Q, --queue create message queue\n"), out);
+ fputs(_(" -p, --mode <mode> permission for the resource (default is 0644)\n"), out);
+
+ fputs(USAGE_SEPARATOR, out);
+ printf(USAGE_HELP_OPTIONS(26));
+
+ fputs(USAGE_ARGUMENTS, out);
+ printf(USAGE_ARG_SIZE(_("<size>")));
+
+ printf(USAGE_MAN_TAIL("ipcmk(1)"));
+
+ exit(EXIT_SUCCESS);
+}
+
+int main(int argc, char **argv)
+{
+ int permission = 0644;
+ int opt;
+ size_t size = 0;
+ int nsems = 0;
+ int ask_shm = 0, ask_msg = 0, ask_sem = 0;
+ static const struct option longopts[] = {
+ {"shmem", required_argument, NULL, 'M'},
+ {"semaphore", required_argument, NULL, 'S'},
+ {"queue", no_argument, NULL, 'Q'},
+ {"mode", required_argument, NULL, 'p'},
+ {"version", no_argument, NULL, 'V'},
+ {"help", no_argument, NULL, 'h'},
+ {NULL, 0, NULL, 0}
+ };
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ close_stdout_atexit();
+
+ while((opt = getopt_long(argc, argv, "hM:QS:p:Vh", longopts, NULL)) != -1) {
+ switch(opt) {
+ case 'M':
+ size = strtosize_or_err(optarg, _("failed to parse size"));
+ ask_shm = 1;
+ break;
+ case 'Q':
+ ask_msg = 1;
+ break;
+ case 'S':
+ nsems = strtos32_or_err(optarg, _("failed to parse elements"));
+ ask_sem = 1;
+ break;
+ case 'p':
+ {
+ char *end = NULL;
+ errno = 0;
+ permission = strtoul(optarg, &end, 8);
+ if (errno || optarg == end || (end && *end))
+ err(EXIT_FAILURE, _("failed to parse mode"));
+ break;
+ }
+ case 'h':
+ usage();
+ case 'V':
+ print_version(EXIT_SUCCESS);
+ default:
+ errtryhelp(EXIT_FAILURE);
+ }
+ }
+
+ if(!ask_shm && !ask_msg && !ask_sem) {
+ warnx(_("bad usage"));
+ errtryhelp(EXIT_FAILURE);
+ }
+ if (ask_shm) {
+ int shmid;
+ if (-1 == (shmid = create_shm(size, permission)))
+ err(EXIT_FAILURE, _("create share memory failed"));
+ else
+ printf(_("Shared memory id: %d\n"), shmid);
+ }
+
+ if (ask_msg) {
+ int msgid;
+ if (-1 == (msgid = create_msg(permission)))
+ err(EXIT_FAILURE, _("create message queue failed"));
+ else
+ printf(_("Message queue id: %d\n"), msgid);
+ }
+
+ if (ask_sem) {
+ int semid;
+ if (-1 == (semid = create_sem(nsems, permission)))
+ err(EXIT_FAILURE, _("create semaphore failed"));
+ else
+ printf(_("Semaphore id: %d\n"), semid);
+ }
+
+ return EXIT_SUCCESS;
+}