#!/bin/ash
#
# SPDX-License-Identifier: GPL-3.0-or-later

# /oldroot depends on things inside /oldroot/run/archiso...
mkdir /oldrun
mount -n --move /oldroot/run /oldrun

# Unmount all mounts now.
umount "$(mount | awk '$3 ~/^\/oldroot/ {print $3}' | sort -r)"

# Remove all dm-snapshot devices.
dmsetup remove_all

# Remove all loopback devices.
for _lup in $(grep ^/dev/loop /oldrun/archiso/used_block_devices | tac); do
    if ! losetup -d -- "${_lup}" 2> /dev/null; then
        umount -d -- "${_lup}"
    fi
done

# Unmount the space used to store *.cow.
umount /oldrun/archiso/cowspace

# Unmount boot device if needed (no copytoram=y used)
if [ ! -d /oldrun/archiso/copytoram ]; then
    if [ -d /oldrun/archiso/img_dev ]; then
        umount /oldrun/archiso/img_dev
    else
        umount /oldrun/archiso/bootmnt
    fi
fi

# reboot / poweroff / halt, depending on the argument passed by init
# if something invalid is passed, we halt
case "$1" in
  reboot|poweroff|halt) "$1" -f ;;
  *) halt -f;;
esac

# vim: set ft=sh:
