tmpfs: convert shmem_writepage and enable swap

[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / Documentation / watchdog / src / watchdog-simple.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>

int main(void)
{
        int fd = open("/dev/watchdog", O_WRONLY);
        int ret = 0;
        if (fd == -1) {
                perror("watchdog");
                exit(EXIT_FAILURE);
        }
        while (1) {
                ret = write(fd, "\0", 1);
                if (ret != 1) {
                        ret = -1;
                        break;
                }
                sleep(10);
        }
        close(fd);
        return ret;
}