* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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 <stdlib.h>
-#include <stdio.h>
-#include <string.h>
#include <errno.h>
-#include <time.h>
-
-#include <unistd.h>
-#include <sys/types.h>
+#include <getopt.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <sys/sem.h>
#include <sys/msg.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#include <sys/time.h>
-#include "nls.h"
#include "c.h"
+#include "nls.h"
+#include "randutils.h"
+#include "strutils.h"
+#include "closestream.h"
-static const char *progname;
-
-key_t createKey(void)
-{
- srandom( time( NULL ) );
- return random();
-}
-
-int createShm(size_t size, int permission)
+static int create_shm(size_t size, int permission)
{
- int result = -1;
- int shmid;
- key_t key = createKey();
+ key_t key;
- if (-1 != (shmid = shmget(key, size, permission | IPC_CREAT)))
- result = shmid;
-
- return result;
+ random_get_bytes(&key, sizeof(key));
+ return shmget(key, size, permission | IPC_CREAT);
}
-int createMsg(int permission)
+static int create_msg(int permission)
{
- int result = -1;
- int msgid;
- key_t key = createKey();
-
- if (-1 != (msgid = msgget(key, permission | IPC_CREAT)))
- result = msgid;
+ key_t key;
- return result;
+ random_get_bytes(&key, sizeof(key));
+ return msgget(key, permission | IPC_CREAT);
}
-int createSem(int nsems, int permission)
+static int create_sem(int nsems, int permission)
{
- int result = -1;
- int semid;
- key_t key = createKey();
-
- if (-1 != (semid = semget(key, nsems, permission | IPC_CREAT)))
- result = semid;
+ key_t key;
- return result;
+ random_get_bytes(&key, sizeof(key));
+ return semget(key, nsems, permission | IPC_CREAT);
}
-void usage(int rc)
+static void __attribute__((__noreturn__)) usage(void)
{
- FILE *out = rc == EXIT_FAILURE ? stderr : stdout;
+ FILE *out = stdout;
+ fputs(USAGE_HEADER, out);
+ fprintf(out, _(" %s [options]\n"), program_invocation_short_name);
- fputs(_("\nUsage:\n"), out);
- fprintf(out,
- _(" %s [options]\n"), progname);
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_("Create various IPC resources.\n"), out);
- fputs(_("\nOptions:\n"), out);
- fputs(_(" -M <size> create shared memory segment of size <size>\n"
- " -S <nsems> create semaphore array with <nsems> elements\n"
- " -Q create message queue\n"
- " -p <mode> permission for the resource (default is 0644)\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(_("\nFor more information see ipcmk(1).\n"), out);
+ fputs(USAGE_SEPARATOR, out);
+ printf(USAGE_HELP_OPTIONS(26));
+ printf(USAGE_MAN_TAIL("ipcmk(1)"));
- exit(rc);
+ exit(EXIT_SUCCESS);
}
int main(int argc, char **argv)
int opt;
size_t size = 0;
int nsems = 0;
- int doShm = 0, doMsg = 0, doSem = 0;
-
- progname = program_invocation_short_name;
- if (!progname)
- progname = "ipcmk";
+ 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(argc, argv, "hM:QS:p:")) != -1) {
+ while((opt = getopt_long(argc, argv, "hM:QS:p:Vh", longopts, NULL)) != -1) {
switch(opt) {
case 'M':
- size = atoi(optarg);
- doShm = 1;
+ size = strtosize_or_err(optarg, _("failed to parse size"));
+ ask_shm = 1;
break;
case 'Q':
- doMsg = 1;
+ ask_msg = 1;
break;
case 'S':
- nsems = atoi(optarg);
- doSem = 1;
+ nsems = strtos32_or_err(optarg, _("failed to parse elements"));
+ ask_sem = 1;
break;
case 'p':
permission = strtoul(optarg, NULL, 8);
break;
+
case 'h':
- usage(EXIT_SUCCESS);
- break;
+ usage();
+ case 'V':
+ print_version(EXIT_SUCCESS);
default:
- doShm = doMsg = doSem = 0;
- break;
+ errtryhelp(EXIT_FAILURE);
}
}
- if(!doShm && !doMsg && !doSem)
- usage(EXIT_FAILURE);
-
- if (doShm) {
+ if(!ask_shm && !ask_msg && !ask_sem) {
+ warnx(_("bad usage"));
+ errtryhelp(EXIT_FAILURE);
+ }
+ if (ask_shm) {
int shmid;
- if (-1 == (shmid = createShm(size, permission)))
+ if (-1 == (shmid = create_shm(size, permission)))
err(EXIT_FAILURE, _("create share memory failed"));
else
printf(_("Shared memory id: %d\n"), shmid);
}
- if (doMsg) {
+ if (ask_msg) {
int msgid;
- if (-1 == (msgid = createMsg(permission)))
+ if (-1 == (msgid = create_msg(permission)))
err(EXIT_FAILURE, _("create message queue failed"));
else
printf(_("Message queue id: %d\n"), msgid);
}
- if (doSem) {
+ if (ask_sem) {
int semid;
- if (-1 == (semid = createSem(nsems, permission)))
+ if (-1 == (semid = create_sem(nsems, permission)))
err(EXIT_FAILURE, _("create semaphore failed"));
else
printf(_("Semaphore id: %d\n"), semid);
projects / thirdparty / util-linux.git / blobdiff