#!/bin/bash
DIR="$@"
DIR=$(readlink -f "$DIR")
DIR_SHORT=$(basename "$DIR")

OVERLAY_ROOT=$(readlink -f "${DIR}/..")/.squashfs/${DIR_SHORT}
OVERLAY_UPPER=${OVERLAY_ROOT}/upper
OVERLAY_LOWER=${OVERLAY_ROOT}/lower
OVERLAY_WORK=${OVERLAY_ROOT}/work
OVERLAY_TARG=$DIR

sudo umount -R "$OVERLAY_TARG" 2>/dev/null
sudo umount -R "$OVERLAY_LOWER" 2>/dev/null

echo "SquashFS filesystem has been unmounted."
exit 0