ubase/ctrlaltdel.c
FRIGN 2d38b7cb9e Refactor ctrlaltdel(8)
1) Rewrite the manpage, don't just copy the util-linux manpage.
2) Fix usage() to reflect exclusivity of flags
3) Style changes.
2015-09-07 12:09:59 +01:00

43 lines
655 B
C

/* See LICENSE file for copyright and license details. */
#include <sys/syscall.h>
#include <stdio.h>
#include <unistd.h>
#include "reboot.h"
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s -h | -s\n", argv0);
}
int
main(int argc, char *argv[])
{
int hflag = 0, sflag = 0, cmd;
ARGBEGIN {
case 'h':
hflag = 1;
break;
case 's':
sflag = 1;
break;
default:
usage();
} ARGEND;
if (argc || !(hflag ^ sflag))
usage();
cmd = hflag ? LINUX_REBOOT_CMD_CAD_ON : LINUX_REBOOT_CMD_CAD_OFF;
if (syscall(__NR_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
cmd, NULL) < 0)
eprintf("reboot:");
return 0;
}