#!/bin/bash

[[ $EUID == 0 ]] || exec sudo -E "$script" "$@"

if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
set -eE -o pipefail
trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" exit status: $?, PIPESTATUS: ${PIPESTATUS[*]}" >&2' ERR

set -x


boot_part=$(awk '$2 == "/boot" {print $1}' /etc/mtab)
boot_dev=${boot_part%[0-9]*}
# from partition.DEFAULT
new_boot_part=${boot_dev}4
mount -o subvol=debianbuster_bootstrap $new_boot_part /mnt

cd /mnt
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