clic-rpi-image/export-noobs/prerun.sh

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#!/bin/bash -e
NOOBS_DIR="${STAGE_WORK_DIR}/${IMG_NAME}${IMG_SUFFIX}"
mkdir -p "${STAGE_WORK_DIR}"
IMG_FILE="${WORK_DIR}/export-image/${IMG_FILENAME}${IMG_SUFFIX}.img"
unmount_image "${IMG_FILE}"
rm -rf "${NOOBS_DIR}"
PARTED_OUT=$(parted -sm "${IMG_FILE}" unit b print)
BOOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^1:' | cut -d':' -f 2 | tr -d B)
BOOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^1:' | cut -d':' -f 4 | tr -d B)
ROOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^2:' | cut -d':' -f 2 | tr -d B)
ROOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^2:' | cut -d':' -f 4 | tr -d B)
echo "Mounting BOOT_DEV..."
cnt=0
until BOOT_DEV=$(losetup --show -f -o "${BOOT_OFFSET}" --sizelimit "${BOOT_LENGTH}" "${IMG_FILE}"); do
if [ $cnt -lt 5 ]; then
cnt=$((cnt + 1))
echo "Error in losetup for BOOT_DEV. Retrying..."
sleep 5
else
echo "ERROR: losetup for BOOT_DEV failed; exiting"
exit 1
fi
done
echo "Mounting ROOT_DEV..."
cnt=0
until ROOT_DEV=$(losetup --show -f -o "${ROOT_OFFSET}" --sizelimit "${ROOT_LENGTH}" "${IMG_FILE}"); do
if [ $cnt -lt 5 ]; then
cnt=$((cnt + 1))
echo "Error in losetup for ROOT_DEV. Retrying..."
sleep 5
else
echo "ERROR: losetup for ROOT_DEV failed; exiting"
exit 1
fi
done
echo "/boot: offset $BOOT_OFFSET, length $BOOT_LENGTH"
echo "/: offset $ROOT_OFFSET, length $ROOT_LENGTH"
mkdir -p "${STAGE_WORK_DIR}/rootfs"
mkdir -p "${NOOBS_DIR}"
mount "$ROOT_DEV" "${STAGE_WORK_DIR}/rootfs"
mount "$BOOT_DEV" "${STAGE_WORK_DIR}/rootfs/boot"
ln -sv "/lib/systemd/system/apply_noobs_os_config.service" "$ROOTFS_DIR/etc/systemd/system/multi-user.target.wants/apply_noobs_os_config.service"
KERNEL_VER="$(zgrep -oPm 1 "Linux version \K(.*)$" "${STAGE_WORK_DIR}/rootfs/usr/share/doc/raspberrypi-kernel/changelog.Debian.gz" | cut -f-2 -d.)"
echo "$KERNEL_VER" > "${STAGE_WORK_DIR}/kernel_version"
bsdtar --numeric-owner --format gnutar -C "${STAGE_WORK_DIR}/rootfs/boot" -cpf - . | xz -T0 > "${NOOBS_DIR}/boot.tar.xz"
umount "${STAGE_WORK_DIR}/rootfs/boot"
bsdtar --numeric-owner --format gnutar -C "${STAGE_WORK_DIR}/rootfs" --one-file-system -cpf - . | xz -T0 > "${NOOBS_DIR}/root.tar.xz"
if [ "${USE_QCOW2}" = "1" ]; then
rm "$ROOTFS_DIR/etc/systemd/system/multi-user.target.wants/apply_noobs_os_config.service"
fi
unmount_image "${IMG_FILE}"