217 lines
6.5 KiB
Bash
Executable File
217 lines
6.5 KiB
Bash
Executable File
#! /bin/sh
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# (c) Copyright 2012 Fabio Erculiani <lxnay@sabayon.org>
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# Licensed under terms of GPLv2
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env-update
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. /etc/profile
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export LC_ALL=C
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# Expected env variables:
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# PATHS_TO_REMOVE = ";" separated list of paths to rm -rf
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# PATHS_TO_EMPTY = ";" separated list of paths to rm -rf (keeping the dir)
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# RELEASE_STRING
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# RELEASE_VERSION
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# RELEASE_DESC
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# RELEASE_FILE
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# IMAGE_NAME
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# DESTINATION_IMAGE_DIR
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# PACKAGES_TO_ADD
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# PACKAGES_TO_REMOVE
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if [ ${#} -ne 5 ]; then
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echo "usage: ${0} <path to regular file containing the image> <size in Mb> <source boot files dir> <source chroot>"
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exit 1
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fi
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CHROOT_SCRIPT="${1}"
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if [ ! -x "${CHROOT_SCRIPT}" ]; then
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echo "${CHROOT_SCRIPT} is not executable"
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exit 1
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fi
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FILE="${2}"
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SIZE="${3}"
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BOOT_DIR="${4}"
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CHROOT_DIR="${5}"
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# Should we make a tarball of the rootfs and bootfs?
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MAKE_TARBALL="${MAKE_TARBALL:-1}"
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cleanup_loopbacks() {
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cd /
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sync
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sync
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sleep 5
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sync
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[[ -n "${tmp_file}" ]] && rm "${tmp_file}" 2> /dev/null
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[[ -n "${tmp_dir}" ]] && { umount "${tmp_dir}" &> /dev/null; rmdir "${tmp_dir}" &> /dev/null; }
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sleep 1
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[[ -n "${vfat_part}" ]] && losetup -d "${vfat_part}" 2> /dev/null
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[[ -n "${ext_part}" ]] && losetup -d "${ext_part}" 2> /dev/null
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[[ -n "${DRIVE}" ]] && losetup -d "${DRIVE}" 2> /dev/null
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}
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trap "cleanup_loopbacks" 1 2 3 6 9 14 15 EXIT
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# Erase the file
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echo "Generating the empty image file at ${FILE}"
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dd if=/dev/zero of="${FILE}" bs=1024000 count="${SIZE}"
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[[ "$?" != "0" ]] && exit 1
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DRIVE=$(losetup -f "${FILE}" --show)
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if [ -z "${DRIVE}" ]; then
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echo "Cannot execute losetup for $FILE"
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exit 1
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fi
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echo "Configured the loopback partition at ${DRIVE}"
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# Calculate size using fdisk
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SIZE=$(fdisk -l "${DRIVE}" | grep Disk | grep bytes | awk '{print $5}')
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CYLINDERS=$((SIZE/255/63/512))
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# Magic first partition size, given 9 cylinders below
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MAGICSIZE="73995264"
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STARTOFFSET="32256"
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echo "Disk size : ${SIZE} bytes"
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echo "Disk cyls : ${CYLINDERS}"
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echo "Magic size : ${MAGICSIZE} bytes (boot part size)"
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echo "Start offset : ${STARTOFFSET} bytes"
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# this will create a first partition that is 73995264 bytes long
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# Starts at sect 63, ends at sect 144584, each sector is 512bytes
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# In fact it creates 9 cyls
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{
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echo ,9,0x0C,*
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echo ,,,-
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} | sfdisk -D -H 255 -S 63 -C $CYLINDERS $DRIVE
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sleep 2
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# The second partiton will start at block 144585, get the end block
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ENDBLOCK=$(fdisk -l "${DRIVE}" | grep "${DRIVE}p2" | awk '{print $3}')
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EXTSIZE=$(((ENDBLOCK - 144585) * 512))
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# Get other two loopback devices first
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EXTOFFSET=$((STARTOFFSET + MAGICSIZE))
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echo "ExtFS size : ${EXTSIZE} bytes"
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echo "ExtFS offset : ${EXTOFFSET} bytes"
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# Get other two loopback devices first
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vfat_part=$(losetup -f --offset "${STARTOFFSET}" --sizelimit "${MAGICSIZE}" "${FILE}" --show)
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if [ -z "${vfat_part}" ]; then
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echo "Cannot setup the vfat partition loopback"
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exit 1
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fi
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ext_part=$(losetup -f --offset "${EXTOFFSET}" --sizelimit "${EXTSIZE}" "${FILE}" --show)
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if [ -z "${ext_part}" ]; then
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echo "Cannot setup the ext3 partition loopback"
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exit 1
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fi
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echo "VFAT Partiton at : ${vfat_part}"
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echo "ExtFS Partition at : ${ext_part}"
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# Format vfat
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echo "Formatting VFAT ${vfat_part}..."
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mkfs.vfat -n "boot" -F 32 "${vfat_part}" || exit 1
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# Format extfs
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echo "Formatting ExtFS ${ext_part}..."
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mkfs.ext3 -L "Sabayon" "${ext_part}" || exit 1
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tmp_dir=$(mktemp -d)
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if [[ -z "${tmp_dir}" ]]; then
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echo "Cannot create temporary dir"
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exit 1
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fi
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chmod 755 "${tmp_dir}" || exit 1
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sleep 2
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sync
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echo "Setting up the boot directory content, mounting on ${tmp_dir}"
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mount "${vfat_part}" "${tmp_dir}"
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cp -R "${BOOT_DIR}"/* "${tmp_dir}"/ || exit 1
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umount "${tmp_dir}" || exit 1
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echo "Setting up the extfs directory content, mounting on ${tmp_dir}"
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mount "${ext_part}" "${tmp_dir}"
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rsync -a -H -A -X --delete-during "${CHROOT_DIR}"/ "${tmp_dir}"/ --exclude "/proc/*" --exclude "/sys/*" \
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--exclude "/dev/pts/*" --exclude "/dev/shm/*" || exit 1
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# execute PACKAGES_TO_ADD and PACKAGES_TO_REMOVE
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export ETP_NONINTERACTIVE=1
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if [ -n "${PACKAGES_TO_ADD}" ]; then
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add_cmd="equo install ${PACKAGES_TO_ADD}"
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chroot "${tmp_dir}" ${add_cmd} || exit 1
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fi
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if [ -n "${PACKAGES_TO_REMOVE}" ]; then
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rem_cmd="equo remove ${PACKAGES_TO_REMOVE}"
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chroot "${tmp_dir}" ${rem_cmd} || exit 1
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fi
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# execute CHROOT_SCRIPT hook inside chroot
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chroot_script_name=$(basename "${CHROOT_SCRIPT}")
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target_chroot_script="${tmp_dir}"/"${chroot_script_name}"
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cp -p "${CHROOT_SCRIPT}" "${target_chroot_script}" || exit 1
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chmod 700 "${target_chroot_script}" || exit 1
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chown root "${target_chroot_script}" || exit 1
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chroot "${tmp_dir}" "/${chroot_script_name}" || exit 1
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rm -f "${target_chroot_script}"
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# work out paths to empty and paths to remove
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if [ -n "${PATHS_TO_REMOVE}" ]; then
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for path in $(echo ${PATHS_TO_REMOVE} | tr ";" "\n"); do
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path="${tmp_dir}/${path}"
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echo "Removing: ${path}"
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rm -rf "${path}"
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done
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fi
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if [ -n "${PATHS_TO_EMPTY}" ]; then
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for path in $(echo ${PATHS_TO_EMPTY} | tr ";" "\n"); do
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path="${tmp_dir}/${path}"
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echo "Emptying: ${path}"
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rm -rf "${path}"/*
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done
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fi
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if [ -n "${RELEASE_FILE}" ]; then
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release_file="${tmp_dir}"/"${RELEASE_FILE}"
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release_dir=$(dirname "${release_file}")
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[[ ! -d "${release_dir}" ]] && { mkdir -p "${release_dir}" || exit 1; }
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echo "${RELEASE_STRING} ${RELEASE_VERSION} ${RELEASE_DESC}" > "${release_file}"
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fi
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if [ -n "${DESTINATION_IMAGE_DIR}" ] && [ "${MAKE_TARBALL}" = "1" ]; then
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# Create the rootfs tarball
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ROOTFS_TARBALL="${DESTINATION_IMAGE_DIR}/${IMAGE_NAME}.rootfs.tar.xz"
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echo "Creating the roofs tarball: ${ROOTFS_TARBALL}"
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tmp_file=$(mktemp --suffix=.tar.xz)
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[[ -z "${tmp_file}" ]] && exit 1
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cd "${tmp_dir}" || exit 1
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tar --numeric-owner --preserve-permissions --same-owner -cJf "${tmp_file}" ./ || exit 1
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mv "${tmp_file}" "${ROOTFS_TARBALL}" || exit 1
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chmod 644 "${ROOTFS_TARBALL}" || exit 1
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cd "$(dirname "${ROOTFS_TARBALL}")" || exit 1
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md5sum "$(basename "${ROOTFS_TARBALL}")" > "$(basename "${ROOTFS_TARBALL}")".md5
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# Create the boot dir tarball
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BOOTFS_TARBALL="${DESTINATION_IMAGE_DIR}/${IMAGE_NAME}.bootfs.tar.xz"
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echo "Creating the bootfs tarball: ${BOOTFS_TARBALL}"
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tmp_file=$(mktemp --suffix=.tar.xz)
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[[ -z "${tmp_file}" ]] && exit 1
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cd "${BOOT_DIR}" || exit 1
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tar --numeric-owner --preserve-permissions --same-owner -cJf "${tmp_file}" ./ || exit 1
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mv "${tmp_file}" "${BOOTFS_TARBALL}" || exit 1
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chmod 644 "${BOOTFS_TARBALL}" || exit 1
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cd "$(dirname "${BOOTFS_TARBALL}")" || exit 1
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md5sum "$(basename "${BOOTFS_TARBALL}")" > "$(basename "${BOOTFS_TARBALL}")".md5
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fi
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umount "${tmp_dir}" || exit 1
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cleanup_loopbacks
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echo "Your MMC image \"${FILE}\" is ready"
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