#include "ddk/ntddchgr.h"
#include "ddk/ntddstor.h"
#include "sys/ioctl.h"
#include <stdio.h>

int eject() {
 FILE *changer = stdin;
 if ((changer = fopen("/dev/scd0", "r+")) == NULL)
  return(1);
 fprintf(stderr, "debug: filehandle=0x%x\n", fileno(changer));
 if ((ioctl(fileno(changer), IOCTL_STORAGE_EJECT_MEDIA, NULL)) == -1)
  return(2);
 return(0);
}

int main(int argc, char **argv) {
 int status;
 if (status = eject() > 0) perror("Cannot eject"); 
 return(status);
}