linux beeper driver test program

sleep_meng

This is the test program for my beeper driver for linux.
               
               
                /*
* beep.c
*
* Copyright (C) 2007 (Meng Renzhou) Szembed Technology co,ltd.
*
* Beeper test program
*/
#include fcntl.h>
#include stdio.h>
#include stdlib.h>
#include unistd.h>
#include signal.h>
#include sys/ioctl.h>
#include sys/types.h>
#include linux/kd.h>
static int fd;
static void die(int x)
{
  printf("signal %d detect, exit program...\n",x);
  ioctl(fd, KIOCSOUND, 0);
  close(fd);
  exit(0);
}
int main(int argc, char *argv[])
{
  int cnt,i;
  if (argc == 2)
    cnt = atoi(argv[1]);
  else
    cnt = 1;
  if (geteuid() == 0)
    fd = open("/dev/tty0", O_WRONLY);
  else
    fd = open("/dev/tty" , O_WRONLY);
  if (fd  0)
    fd = open("dev/console", O_WRONLY);
  if (fd  0) {
    perror("open");
    exit(1);
  }
  signal(SIGKILL, die);
  signal(SIGILL, die);
  signal(SIGINT, die);
  for(i=0; icnt; i++){
    ioctl(fd, KIOCSOUND, 2000);
    usleep(1000*500);
    ioctl(fd, KIOCSOUND, 0);
    usleep(1000*500);
  }
  close(fd);
  exit(0);
}


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