//Written by Shaya Potter <spotter@cs.columbia.edu>
//Placed in the Public Domain

#include <sys/ioctl.h>
#include <stdio.h>
#include <fcntl.h>
#include <linux/cdrom.h>
#include <string.h>
#include <libgen.h>

int main(int argc, char *argv[])
{
	int fd;
	int lock;

	char *cmd1;

	cmd1 = basename(argv[0]);

	if (!strcmp(cmd1, "cd-lock"))
		lock = 1;
	else if (!strcmp(cmd1, "cd-unlock"))
		lock = 0;
	else {
		printf("program must be called cd-lock or cd-unlock\n");
		return 1;
	}

	if (argc != 2) {
		printf("not enough options\nUsage:\n\t%s device\n", cmd1);
		return 2;
	}
			

	if ((fd = open(argv[1], O_RDONLY)) <= 0) {
		perror("open failed");
		return 3;
	}

	if (ioctl(fd, CDROM_LOCKDOOR, lock)) {
		perror("ioctl failed");
		return 4;
	}

	return 0;
}