release/src-rt-6.x/linux/linux-2.6/Documentation/watchdog/src/watchdog-simple.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <fcntl.h>
   5
   6 int main(int argc, const char *argv[]) {
   7         int fd = open("/dev/watchdog", O_WRONLY);
   8         if (fd == -1) {
   9                 perror("watchdog");
  10                 exit(1);
  11         }
  12         while (1) {
  13                 write(fd, "\0", 1);
  14                 fsync(fd);
  15                 sleep(10);
  16         }
  17 }