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

int main(void)
{
	int fd = open("/dev/sr0", O_RDONLY | O_NONBLOCK);
	int ret;
	if (fd < 0) {
		perror("open");
		return 1;
	}

	ret = ioctl(fd, CDROM_DRIVE_STATUS, 0);
	printf("ioctl result %d\n", ret);

	switch(ret) {
		case CDS_NO_INFO: printf("CDS_NO_INFO\n"); break;
		case CDS_NO_DISC: printf("CDS_NO_DISC\n"); break;
		case CDS_TRAY_OPEN: printf("CDS_TRAY_OPEN\n"); break;
		case CDS_DRIVE_NOT_READY: printf("CDS_DRIVE_NOT_READY\n"); break;
		case CDS_DISC_OK: printf("CDS_DISC_OK\n"); break;
		default: printf("Unknown\n"); break;
	}
	return 0;
}