#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>

int main (int argc, char **argv)
{
    int fd, status;

    fd = open(".", O_RDONLY);
    if (fd < 0) {
	perror("open");
	exit(1);
    }
    status = fsync(fd);
    if (status != 0) {
	perror("fsync");
	exit(2);
    }
    close(fd);
    printf("OK\n");
    exit(0);
}