#!/bin/bash

script=$(readlink -f -- "$BASH_SOURCE")
[[ $EUID == 0 ]] || exec sudo -E "$script" "$@"

source /usr/local/lib/err


# Explaining this whole thing. The host amy is used by someone else,
# i back it up to my extra big partition on one computer.
# But I also want to restore it and test out the restoration on
# a computer I usually use. For this, I created a separate partition
# that has the amy encryption password, and a separate boot so
# that I could encrypt my own boot partition if I want. Then,
# I backup from this big partition into that partition in order
# to boot and run it.
#
## In order to boot and run it:

set -x

if [[ ! -e /mnt/root/root2-fstab || ! -e /mnt/root/root2-crypttab ]]; then
  echo $0: "error: create /mnt/root/root2-fstab & /mnt/root/root2-crypttab from running /a/bin/fai/fai/config/hooks/partition.DEFAULT mkroot2 or mkroot2tab"
  exit 1
fi

mount -o bind /mnt/root2/root_ubuntubionic /mnt/1
cd /mnt/1
/b/ds/gen-amy-fstab ubuntubionic .
teeu /mnt/1/etc/default/grub <<<'GRUB_DISABLE_OS_PROBER=true'
mount -o bind /mnt/boot2/boot_ubuntubionic boot
mount -o bind /dev dev
mount -o bind /proc proc
mount -o bind /sys sys
mkdir -p boot/efi
mount $(awk '$2 == "/boot/efi" {print $1}' /etc/mtab) boot/efi

cp /b/ds/zboot-chroot ./root

chroot . ./root/zboot-chroot

echo "check output and reboot"