/*cdrom.c*/
#include <sys/ioctl.h> 
#include <linux/cdrom.h> 
#include <fcntl.h> 

#define CDROM "/dev/cdrom"  
/* In all functions 'device' means name of CD-ROM device, 
* for example /dev/cdrom 
*/

/* Close CD-ROM tray */
int cdclose(char *device)
{
int fd = open(device, O_RDONLY|O_NONBLOCK);
if (fd == -1)
return -1;
if (ioctl(fd, CDROMCLOSETRAY) == -1)
return -1;
close(fd);
return 0;
}

/* Eject CD-ROM tray */
int cdeject(char *device)
{
int fd = open(device, O_RDONLY|O_NONBLOCK);
if (fd == -1)
return -1;
if (ioctl(fd, CDROMEJECT) == -1)
return -1;
close(fd);
return 0;
}

/* Lock (if lock==1) or unlock (if lock==0) CD-ROM tray */
int cdlock(char *device, int lock)
{
int fd;
fd = open(device, O_RDONLY|O_NONBLOCK);
if (fd == -1)
return -1;
if (ioctl(fd, CDROM_LOCKDOOR, lock) == -1)
return -1;
close(fd);
return 0;
}

/**********************************************************/
/**********************************************************/
/**********************************************************/

/* Cdrom.i */
%module Cdrom
%{
/* Put header files here (optional) */
%}
extern int cdclose(char *device);
extern int cdeject(char *device);
extern int cdlock(char *device, int lock);

/**********************************************************/
/**********************************************************/
/**********************************************************/
#cdrom.pl
###########################################
#!/usr/bin/perl

use Cdrom;

#cdclose($device); 
#cdeject($device); 
#cdlock($device,$lock); #lock=1 to lock  
                        #lock=0 to unlock 
#cdlock($device,1) 

$cdrom= '/dev/cdrom';
#$cdrom = '/dev/hdc';

cdeject($cdrom) or die $!;
sleep(5);
cdclose($cdrom) or die $!;
exit (0);
############################################