tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2#include <stdio.h>
3#include <stdlib.h>
4#include <unistd.h>
5#include <fcntl.h>
6
7int main(void)
8{
9 int fd = open("/dev/watchdog", O_WRONLY);
10 int ret = 0;
11 if (fd == -1) {
12 perror("watchdog");
13 exit(EXIT_FAILURE);
14 }
15 while (1) {
16 ret = write(fd, "\0", 1);
17 if (ret != 1) {
18 ret = -1;
19 break;
20 }
21 sleep(10);
22 }
23 close(fd);
24 return ret;
25}