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burrow-pi-img/build.sh
Daniel F. Dickinson 3f2ff883c3 Allow customizing exports (images) and document 
There are use cases where pi-gen can be useful that need different
image generation that the current defaults.  Rather than force such
users to require carrying modified versions of the default exports,
allow users to specify alternate exports (e.g. instead of export-image
and export-noobs, or in addition to these).  We do this using a
mechanism similar to STAGE_LIST, except that the lists of images are
per-stage and default to paying attention to the presence of
EXPORT_IMAGE and EXPORT_NOOBS as is currently the case.

Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>
2020-01-16 09:59:52 -05:00

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#!/bin/bash -e
# shellcheck disable=SC2119
run_sub_stage()
{
log "Begin ${SUB_STAGE_DIR}"
pushd "${SUB_STAGE_DIR}" > /dev/null
for i in {00..99}; do
if [ -f "${i}-debconf" ]; then
log "Begin ${SUB_STAGE_DIR}/${i}-debconf"
on_chroot << EOF
debconf-set-selections <<SELEOF
$(cat "${i}-debconf")
SELEOF
EOF
log "End ${SUB_STAGE_DIR}/${i}-debconf"
fi
if [ -f "${i}-packages-nr" ]; then
log "Begin ${SUB_STAGE_DIR}/${i}-packages-nr"
PACKAGES="$(sed -f "${SCRIPT_DIR}/remove-comments.sed" < "${i}-packages-nr")"
if [ -n "$PACKAGES" ]; then
on_chroot << EOF
apt-get install --no-install-recommends -y $PACKAGES
EOF
fi
log "End ${SUB_STAGE_DIR}/${i}-packages-nr"
fi
if [ -f "${i}-packages" ]; then
log "Begin ${SUB_STAGE_DIR}/${i}-packages"
PACKAGES="$(sed -f "${SCRIPT_DIR}/remove-comments.sed" < "${i}-packages")"
if [ -n "$PACKAGES" ]; then
on_chroot << EOF
apt-get install -y $PACKAGES
EOF
fi
log "End ${SUB_STAGE_DIR}/${i}-packages"
fi
if [ -d "${i}-patches" ]; then
log "Begin ${SUB_STAGE_DIR}/${i}-patches"
pushd "${STAGE_WORK_DIR}" > /dev/null
if [ "${CLEAN}" = "1" ]; then
rm -rf .pc
rm -rf ./*-pc
fi
QUILT_PATCHES="${SUB_STAGE_DIR}/${i}-patches"
SUB_STAGE_QUILT_PATCH_DIR="$(basename "$SUB_STAGE_DIR")-pc"
mkdir -p "$SUB_STAGE_QUILT_PATCH_DIR"
ln -snf "$SUB_STAGE_QUILT_PATCH_DIR" .pc
quilt upgrade
if [ -e "${SUB_STAGE_DIR}/${i}-patches/EDIT" ]; then
echo "Dropping into bash to edit patches..."
bash
fi
RC=0
quilt push -a || RC=$?
case "$RC" in
0|2)
;;
*)
false
;;
esac
popd > /dev/null
log "End ${SUB_STAGE_DIR}/${i}-patches"
fi
if [ -x ${i}-run.sh ]; then
log "Begin ${SUB_STAGE_DIR}/${i}-run.sh"
./${i}-run.sh
log "End ${SUB_STAGE_DIR}/${i}-run.sh"
fi
if [ -f ${i}-run-chroot.sh ]; then
log "Begin ${SUB_STAGE_DIR}/${i}-run-chroot.sh"
on_chroot < ${i}-run-chroot.sh
log "End ${SUB_STAGE_DIR}/${i}-run-chroot.sh"
fi
done
popd > /dev/null
log "End ${SUB_STAGE_DIR}"
}
run_stage(){
log "Begin ${STAGE_DIR}"
STAGE="$(basename "${STAGE_DIR}")"
pushd "${STAGE_DIR}" > /dev/null
unmount "${WORK_DIR}/${STAGE}"
STAGE_WORK_DIR="${WORK_DIR}/${STAGE}"
ROOTFS_DIR="${STAGE_WORK_DIR}"/rootfs
if [ ! -f SKIP_IMAGES ]; then
if [ -z "${EXPORT_LIST}" ]; then
get_stage_export "${STAGE_DIR}"
if [ -n "${EXPORT_LIST}" ]; then
EXPORT_DIRS="${EXPORT_DIRS} ${STAGE_DIR}"
fi
unset EXPORT_LIST
export EXPORT_LIST
fi
fi
if [ ! -f SKIP ]; then
if [ "${CLEAN}" = "1" ]; then
if [ -d "${ROOTFS_DIR}" ]; then
rm -rf "${ROOTFS_DIR}"
fi
fi
if [ -x prerun.sh ]; then
log "Begin ${STAGE_DIR}/prerun.sh"
./prerun.sh
log "End ${STAGE_DIR}/prerun.sh"
fi
for SUB_STAGE_DIR in "${STAGE_DIR}"/*; do
if [ -d "${SUB_STAGE_DIR}" ] &&
[ ! -f "${SUB_STAGE_DIR}/SKIP" ]; then
run_sub_stage
fi
done
fi
unmount "${WORK_DIR}/${STAGE}"
PREV_STAGE="${STAGE}"
PREV_STAGE_DIR="${STAGE_DIR}"
PREV_ROOTFS_DIR="${ROOTFS_DIR}"
popd > /dev/null
log "End ${STAGE_DIR}"
}
if [ "$(id -u)" != "0" ]; then
echo "Please run as root" 1>&2
exit 1
fi
BASE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
export BASE_DIR
if [ -f config ]; then
# shellcheck disable=SC1091
source config
fi
while getopts "c:" flag
do
case "$flag" in
c)
EXTRA_CONFIG="$OPTARG"
# shellcheck disable=SC1090
source "$EXTRA_CONFIG"
;;
*)
;;
esac
done
export PI_GEN=${PI_GEN:-pi-gen}
export PI_GEN_REPO=${PI_GEN_REPO:-https://github.com/RPi-Distro/pi-gen}
if [ -z "${IMG_NAME}" ]; then
echo "IMG_NAME not set" 1>&2
exit 1
fi
export USE_QEMU="${USE_QEMU:-0}"
export IMG_DATE="${IMG_DATE:-"$(date +%Y-%m-%d)"}"
export IMG_FILENAME="${IMG_FILENAME:-"${IMG_DATE}-${IMG_NAME}"}"
export ZIP_FILENAME="${ZIP_FILENAME:-"image_${IMG_DATE}-${IMG_NAME}"}"
export SCRIPT_DIR="${BASE_DIR}/scripts"
export WORK_DIR="${WORK_DIR:-"${BASE_DIR}/work/${IMG_DATE}-${IMG_NAME}"}"
export DEPLOY_DIR=${DEPLOY_DIR:-"${BASE_DIR}/deploy"}
export DEPLOY_ZIP="${DEPLOY_ZIP:-1}"
export LOG_FILE="${WORK_DIR}/build.log"
export HOSTNAME=${HOSTNAME:-raspberrypi}
export FIRST_USER_NAME=${FIRST_USER_NAME:-pi}
export FIRST_USER_PASS=${FIRST_USER_PASS:-raspberry}
export WPA_ESSID
export WPA_PASSWORD
export WPA_COUNTRY
export ENABLE_SSH="${ENABLE_SSH:-0}"
export LOCALE_DEFAULT="${LOCALE_DEFAULT:-en_GB.UTF-8}"
export KEYBOARD_KEYMAP="${KEYBOARD_KEYMAP:-gb}"
export KEYBOARD_LAYOUT="${KEYBOARD_LAYOUT:-English (UK)}"
export TIMEZONE_DEFAULT="${TIMEZONE_DEFAULT:-Europe/London}"
export GIT_HASH=${GIT_HASH:-"$(git rev-parse HEAD)"}
if [ "${USE_QEMU}" = "1" ]; then
# shellcheck disable=SC2034
export stage2_EXPORT_LIST="${stage2_EXPORT_LIST:-export-image}"
# shellcheck disable=SC2034
export stage4_EXPORT_LIST="${stage4_EXPORT_LIST:-export-image}"
# shellcheck disable=SC2034
export stage5_EXPORT_LIST="${stage5_EXPORT_LIST:-export-image}"
fi
export CLEAN
export IMG_NAME
export APT_PROXY
export STAGE
export STAGE_DIR
export STAGE_WORK_DIR
export PREV_STAGE
export PREV_STAGE_DIR
export ROOTFS_DIR
export PREV_ROOTFS_DIR
export IMG_SUFFIX
export NOOBS_NAME
export NOOBS_DESCRIPTION
export EXPORT_DIR
export EXPORT_ROOTFS_DIR
export QUILT_PATCHES
export QUILT_NO_DIFF_INDEX=1
export QUILT_NO_DIFF_TIMESTAMPS=1
export QUILT_REFRESH_ARGS="-p ab"
# shellcheck source=scripts/common
source "${SCRIPT_DIR}/common"
# shellcheck source=scripts/dependencies_check
source "${SCRIPT_DIR}/dependencies_check"
dependencies_check "${BASE_DIR}/depends"
#check username is valid
if [[ ! "$FIRST_USER_NAME" =~ ^[a-z][-a-z0-9_]*$ ]]; then
echo "Invalid FIRST_USER_NAME: $FIRST_USER_NAME"
exit 1
fi
if [[ -n "${APT_PROXY}" ]] && ! curl --silent "${APT_PROXY}" >/dev/null ; then
echo "Could not reach APT_PROXY server: ${APT_PROXY}"
exit 1
fi
if [[ -n "${WPA_PASSWORD}" && ${#WPA_PASSWORD} -lt 8 || ${#WPA_PASSWORD} -gt 63 ]] ; then
echo "WPA_PASSWORD" must be between 8 and 63 characters
exit 1
fi
mkdir -p "${WORK_DIR}"
log "Begin ${BASE_DIR}"
STAGE_LIST=${STAGE_LIST:-${BASE_DIR}/stage*}
for STAGE_DIR in $STAGE_LIST; do
STAGE_DIR=$(realpath "${STAGE_DIR}")
run_stage
done
CLEAN=1
for EXPORT_DIR in ${EXPORT_DIRS}; do
log "Begin export ${EXPORT_DIR}"
# e.g. stageX with default stage_dirs
get_stage_export "${EXPORT_DIR}"
for EXPORT_IMAGE in ${EXPORT_LIST}; do
IMAGE_SOURCE="$(echo "${EXPORT_IMAGE}" | tr '[:lower:]' '[:upper:]' | tr '\-' '_')"
if [ -f "${EXPORT_DIR}/${IMAGE_SOURCE}" ]; then
log "Begin ${EXPORT_IMAGE}"
STAGE_DIR="${BASE_DIR}/${EXPORT_IMAGE}"
# shellcheck source=/dev/null
source "${EXPORT_DIR}/${IMAGE_SOURCE}"
# shellcheck disable=SC2153
EXPORT_ROOTFS_DIR="${WORK_DIR}/${EXPORT_STAGE}/rootfs"
run_stage
log "End ${EXPORT_IMAGE}"
fi
done
log "End export ${EXPORT_DIR}"
done
if [ -x ${BASE_DIR}/postrun.sh ]; then
log "Begin postrun.sh"
cd "${BASE_DIR}"
./postrun.sh
log "End postrun.sh"
fi
log "End ${BASE_DIR}"
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