# ------------------------------------------------------------------------------
# Chroot system functions
# This file is part of the init.sh project
# Copyright (c) 2019-2022 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
# ------------------------------------------------------------------------------
# This file is distributed under 3-clause BSD license.
# The complete license agreement can be obtained at:
# https://opensource.org/licenses/BSD-3-Clause
# ------------------------------------------------------------------------------


# ------------------------------------------------------------------------------
# If chrooted, we need to bootstrap to a new copy of our directory tree
chroot_bootstrap()
{
    if [[ ! -d $CHROOT_PATH ]]; then
        prnt E "The path given to chroot don't exists."
        die 14
    fi
    if [[ ! -d $CHROOT_PATH/tmp ]]; then
        prnt E "The target filesystem doesn't seems to be a valid installation."
        die 15
    fi

    local tmpdir=$(mktemp -d $CHROOT_PATH/tmp/init.sh-XXXX)
    local bootstrap_items="conf lib modules repo bash.rc init.sh prepost.d"
    if [[ $RESUME == true ]]; then
        bootstrap_items="$bootstrap_items $STAGE_FILE"
    fi

    prnt I "Preparing root change."
    cp -av $bootstrap_items $tmpdir

    prnt I "Changing root and starting a fork of init.sh..."
    chroot $CHROOT_PATH /bin/bash -c 'CHROOT_DONE=true; $tmpdir/init.sh $@'

    # If stage file still exists we copy it to be able to resume later
    if [[ -e $tmpdir/$(basename $STAGE_FILE) ]]; then
        cp $tmpdir/$(basename $STAGE_FILE) $STAGE_FILE
    fi

    prnt I "Back to host system and clean up."
    rm -rf $tmpdir
}

# EOF