Simple CD-ROM Eject

eject.c

#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/cdrom.h>

int
main (int argc,
      char **argv)
 {
   int fd;
   char *devname = argv[1];

   fd = open (devname, O_RDWR | O_NONBLOCK);
   if (fd < 0)
     fd = open (devname, O_RDONLY | O_NONBLOCK);
   if (fd >= 0)
     {
       if (ioctl (fd, CDROM_LOCKDOOR, 0) >= 0)
	 ioctl (fd, CDROMEJECT);
       close (fd);
     }

   return 0;
 }