ubase/halt.c

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C
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/* See LICENSE file for copyright and license details. */
#include <sys/syscall.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "reboot.h"
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s [-pr]\n", argv0);
}
int
main(int argc, char *argv[])
{
int pflag = 0, rflag = 0;
int cmd = LINUX_REBOOT_CMD_HALT;
ARGBEGIN {
case 'p':
pflag = 1;
break;
case 'r':
rflag = 1;
break;
default:
usage();
} ARGEND;
if (argc > 0)
usage();
sync();
if (pflag && rflag)
usage();
if (pflag)
cmd = LINUX_REBOOT_CMD_POWER_OFF;
if (rflag)
cmd = LINUX_REBOOT_CMD_RESTART;
if (syscall(__NR_reboot, LINUX_REBOOT_MAGIC1,
LINUX_REBOOT_MAGIC2, cmd, NULL) < 0)
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eprintf("reboot:");
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return 0;
}