| #!/usr/bin/env bash |
| |
| # Copyright 2018 The Fuchsia Authors |
| # |
| # Use of this source code is governed by a MIT-style |
| # license that can be found in the LICENSE file or at |
| # https://opensource.org/licenses/MIT |
| |
| set -eo pipefail |
| |
| usage() { |
| echo "usage: ${0} {extras_dir} {target_image} {depfile}" |
| exit 1 |
| } |
| |
| if [ "$#" -ne 3 ]; then |
| usage |
| fi |
| |
| declare -r EXTRAS_DIR=${1} |
| declare -r TARGET_IMAGE=${2} |
| declare -r DEPFILE=${3} |
| declare -r BLOCK_SIZE=4096 |
| declare -r ADDITIONAL_BLOCKS=1024 |
| declare -r EXTRAS_SIZE=$(du -sb ${EXTRAS_DIR} | grep -o '^[0-9]*') |
| declare -r EXTRAS_BLOCKS=$(($((${EXTRAS_SIZE}/${BLOCK_SIZE}))+${ADDITIONAL_BLOCKS})) |
| declare -r INPUT_FILES=$(find "${EXTRAS_DIR}" -type f | tr '\n' ' ') |
| declare -r DEPFILE_CONTENTS="${TARGET_IMAGE}: ${INPUT_FILES}" |
| mke2fs -q -d "${EXTRAS_DIR}" -t ext2 -b ${BLOCK_SIZE} "${TARGET_IMAGE}" ${EXTRAS_BLOCKS} |
| echo "${DEPFILE_CONTENTS}" > ${DEPFILE} |
