#!/bin/sh

IMG="$1"
MOUNTPOINT="$HOME/guest_fs"
DIR2CHECK="$MOUNTPOINT/boot"

export LANG=C
export LIBGUESTFS_TRACE=1

echo 'Creat mount point...'
mkdir "$MOUNTPOINT"

echo "Mount $IMG per guestfish..."
eval $(guestfish --listen -a "$IMG" 2>/dev/null)
echo "GUESTFISH_PID=$GUESTFISH_PID"
guestfish --remote run
echo "Invoke guestfish mount..."
guestfish --remote mount /dev/sda1 /
echo "Invoke guestfish mount-local..."
guestfish --remote mount-local $MOUNTPOINT
guestfish --remote mount-local-run &
echo "List content of $DIR2CHECK..."
ls -l "$DIR2CHECK"

cleanup() {
	ret=0
	if grep $MOUNTPOINT /etc/mtab >/dev/null; then
		echo "Unmount $MOUNTPOINT..."
		fusermount -u "$MOUNTPOINT"
	else
		echo 'Failed to mount image, nothing to unmount.'
		ret=1
	fi
	if [ -n "$GUESTFISH_PID" ]; then
		echo 'Stop guestfish background process...'
		guestfish --remote exit || true
	else
		echo 'No guestfish background process active, nothing to stop.'
	fi
	if [ -d "$MOUNTPOINT" ]; then
		echo 'Drop mount point...'
		rmdir "$MOUNTPOINT"
	fi
	if [ $ret != 0 ]; then
		echo "Terminated with error"
	fi	
	exit $ret
}

trap cleanup EXIT TERM INT HUP