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#!/bin/sh
## live-build(7) - System Build Scripts
## Copyright (C) 2016-2020 The Debian Live team
## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.
set -e
# Including common functions
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh
# Setting static variables
DESCRIPTION="Cache bootstrap stage"
USAGE="${PROGRAM} {restore|save} [--force]"
# Processing arguments and configuration files
Init_config_data "${@}"
_ACTION="${1}"
shift
# Check architecture
Check_crossarchitectures
if ! In_list "bootstrap" ${LB_CACHE_STAGES}; then
exit 0
fi
# Set non-default stage file name
# Note, this (plus the applicable extension added below) must match that used in `bootstrap_debootstrap`
STAGE_FILE="bootstrap_cache.${_ACTION}"
case "${_ACTION}" in
restore)
# Checking stage file
Check_stagefile "${STAGE_FILE}"
if [ -d cache/bootstrap ]
then
Echo_message "Restoring bootstrap stage from cache..."
# Acquire lock file
Acquire_lockfile
# Removing old chroot
rm -rf chroot
# Catch failure condition.
# The installer stage, if not 'none' or 'live' needs to copy cached
# bootstrap packages, and will error if these do not exist. This
# could be the case if bootstrap is cached but the packages were
# wiped from the cache. This detects this condition and if it is the
# case, ignores the cached bootstrap, forcing it to be rebuilt thus
# re-caching the packages.
if ! In_list "${LB_DEBIAN_INSTALLER}" live none &&
! ls cache/packages.bootstrap/*.deb > /dev/null 2>&1
then
Echo_message "Cached bootstrap packages required but missing, ignoring cached bootstrap to force rebuild."
exit 0
fi
# Restoring old cache
cp -a cache/bootstrap chroot
# Creating stage file
Create_stagefile "${STAGE_FILE}"
Create_stagefile "bootstrap"
exit 0
fi
;;
save)
Echo_message "Saving bootstrap stage to cache..."
# Checking stage file
Check_stagefile "${STAGE_FILE}"
# Acquire lock file
Acquire_lockfile
rm -rf cache/bootstrap
mkdir -p cache
cp -a chroot cache/bootstrap
# Creating stage file
Create_stagefile "${STAGE_FILE}"
;;
*)
Echo_error "Invalid action parameter: '${_ACTION}'"
Usage --fail
;;
esac
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