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