1/* vi: set sw=4 ts=4: */
2/*
3 * Mini watchdog implementation for busybox
4 *
5 * Copyright (C) 2000  spoon <spoon@ix.netcom.com>.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23/* getopt not needed */
24
25#include <stdio.h>
26#include <fcntl.h>
27#include <unistd.h>
28#include <stdlib.h>
29#include "busybox.h"
30
31extern int watchdog_main(int argc, char **argv)
32{
33	int fd;
34
35	if (argc != 2) {
36		show_usage();
37	}
38
39	if ((fd=open(argv[1], O_WRONLY)) == -1) {
40		perror_msg_and_die(argv[1]);
41	}
42
43	while (1) {
44		sleep(30);
45		write(fd, "\0", 1);
46	}
47
48	return EXIT_FAILURE;
49}
50