#!/usr/bin/perl

use strict;
use warnings;

my $disk = "/dev/sdb1";
my $volume = "hddVolume";
my $mountpoint = "/mnt/hddDisk";

if ( ! defined $ARGV[0] ) {
	print "Pass either --mount or --umount\n";
	exit 1;
}

my $opt = $ARGV[0];

if ( $opt eq "mount" ) {
	system("sudo cryptsetup luksOpen $disk $volume");
	system("sudo mount /dev/mapper/$volume $mountpoint");
} elsif ( $opt eq "umount" ) {
	system("sudo umount $mountpoint");
	system("sudo cryptsetup luksClose /dev/mapper/$volume");
} else {
	print "Did not recognize opt, exiting...\n";
}