#!/bin/bash PKGLIST="" QUIET="y" FORCE="n" PACCONFIG="/etc/pacman.conf" export LABEL="ARCH_$(date +%Y%m)" PUBLISHER="Arch Linux <http://www.archlinux.org>" APPLICATION="Arch Linux Live/Rescue CD" COMPRESSION="gzip" CREATE_DEFAULT="n" INSTALL_DIR="arch" APPNAME=$(basename "${0}") ARCH=$(uname -m) # usage: usage <exitvalue> usage () { echo "usage ${APPNAME} [options] command <command options>" echo " general options:" echo " -f Force overwrite of working files/squashfs image/bootable image" echo " -p PACKAGE(S) Additional package(s) to install, can be used multiple times" echo " -C <file> Config file for pacman. Default $PACCONFIG" echo " -L <label> Set a label for the disk" echo " -P <publisher> Set a publisher for the disk" echo " -A <application> Set an application name for the disk" echo " -c <compressor> Set SquashFS compression type: gzip, lzma or lzo. Default $COMPRESSION" echo " NOTES:" echo " lzma: not officially supported yet by Linux (2.6.36)" echo " lzo: needs Linux >= 2.6.36" echo " -D <install_dir> Set an install_dir. All files will by located here on ISO (except for syslinux)" echo " Default $INSTALL_DIR" echo " NOTE: Max 8 characters, use only [a-z0-9]" echo " -d Create default user directory /home/arch" echo " -v Enable verbose output" echo " -h This message" echo " commands:" echo " create <dir>" echo " create a base directory layout to work with" echo " includes all specified packages" echo " iso <dir> <image name>" echo " build an iso image from the working dir" exit $1 } while getopts 'p:C:L:P:A:c:D:dfvh' arg; do case "${arg}" in p) PKGLIST="${PKGLIST} ${OPTARG}" ;; C) PACCONFIG="${OPTARG}" ;; L) LABEL="${OPTARG}" ;; P) PUBLISHER="${OPTARG}" ;; A) APPLICATION="${OPTARG}" ;; c) COMPRESSION="${OPTARG}" ;; D) INSTALL_DIR="${OPTARG}" ;; d) CREATE_DEFAULT="y" ;; f) FORCE="y" ;; v) QUIET="n" ;; h|?) usage 0 ;; *) echo "invalid argument '${arg}'"; usage 1 ;; esac done #trim spaces PKGLIST="$(echo $PKGLIST)" shift $(($OPTIND - 1)) # do UID checking here so someone can at least get usage instructions if [ "$EUID" != "0" ]; then echo "error: This script must be run as root." exit 1 fi if [ ! -f "$PACCONFIG" ]; then echo "error: pacman config file '$PACCONFIG' does not exist" exit 1 fi command_name="${1}" work_dir="" imgname="" case "${command_name}" in create) work_dir="${2}"; imgname="none" ;; iso) work_dir="${2}"; imgname="${3}" ;; *) echo "invalid command name '${command_name}'"; usage 1 ;; esac [ "x${imgname}" = "x" ] && echo "Image name must be specified" && usage 1 [ "x${work_dir}" = "x" ] && echo "Please specify a working directory" && usage 1 echo "${APPNAME} : Configuration Settings" echo " working directory: ${work_dir}" echo " image name: ${imgname}" # usage: _pacman <packages>... _pacman () { local ret if [ "${QUIET}" = "y" ]; then mkarchroot -n -C "$PACCONFIG" -f "${work_dir}/root-image" $* 2>&1 >/dev/null ret=$? else mkarchroot -n -C "$PACCONFIG" -f "${work_dir}/root-image" $* ret=$? fi # Cleanup find "${work_dir}" -name *.pacnew -name *.pacsave -name *.pacorig -delete if [ $ret -ne 0 ]; then exit 1 fi } command_create () { echo "====> Creating working directory: ${work_dir}" mkdir -p "${work_dir}/iso/${INSTALL_DIR}/${ARCH}" mkdir -p "${work_dir}/root-image/" if [ "${PKGLIST}" != "" ]; then echo "====> Installing packages to '${work_dir}/root-image/'" _pacman "${PKGLIST}" echo "Cleaning up what we can" if [ -d "${work_dir}/root-image/boot/" ]; then # remove the initcpio images that were generated for the host system find "${work_dir}/root-image/boot" -name '*.img' -delete fi if [ ${CREATE_DEFAULT} == "y" ]; then if [ -d "${work_dir}/root-image/home/" ]; then echo "Creating default home directory" install -d -o1000 -g100 -m0755 "${work_dir}/root-image/home/arch" fi fi # Delete pacman database sync cache files (*.tar.gz) find "${work_dir}/root-image/var/lib/pacman" -maxdepth 1 -type f -delete # Delete pacman database sync cache find "${work_dir}/root-image/var/lib/pacman/sync" -delete # Delete pacman package cache find "${work_dir}/root-image/var/cache/pacman/pkg" -type f -delete # Delete all log files, keeps empty dirs. find "${work_dir}/root-image/var/log" -type f -delete # Delete all temporary files and dirs find "${work_dir}/root-image/var/tmp" -mindepth 1 -delete # Delete all temporary files and dirs find "${work_dir}/root-image/tmp" -mindepth 1 -delete fi } # _mksquash dirname _mksquash () { if [ ! -d "$1" ]; then echo "Error: '$1' is not a directory" return 1 fi sqimg="${work_dir}/iso/${INSTALL_DIR}/${ARCH}/$(basename ${1}).sqfs" echo "====> Generating SquashFS image for '${1}'" if [ -e "${sqimg}" ]; then dirhaschanged=$(find ${1} -newer ${sqimg}) if [ "${dirhaschanged}" != "" ]; then echo "SquashFS image '${sqimg}' is not up to date, rebuilding..." rm "${sqimg}" else echo "SquashFS image '${sqimg}' is up to date, skipping." return fi fi echo "Creating SquashFS image. This may take some time..." start=$(date +%s) if [ "${QUIET}" = "y" ]; then mksquashfs "${1}" "${sqimg}" -noappend -comp "${COMPRESSION}" >/dev/null else mksquashfs "${1}" "${sqimg}" -noappend -comp "${COMPRESSION}" fi minutes=$(echo $start $(date +%s) | awk '{ printf "%0.2f",($2-$1)/60 }') echo "Image creation done in $minutes minutes." } _imgcommon () { for d in $(find "${work_dir}" -maxdepth 1 -type d -name '[^.]*'); do if [ "$d" != "${work_dir}/iso" -a \ "$(basename "$d")" != "iso" -a \ "$d" != "${work_dir}" ]; then _mksquash "$d" fi done echo "====> Making bootable image" # Sanity checks if [ ! -d "${work_dir}/iso" ]; then echo "Error: '${work_dir}/iso' doesn't exist. What did you do?!" exit 1 fi if [ ! -f "${work_dir}/iso/${INSTALL_DIR}/isomounts" ]; then echo "Error: the isomounts file doesn't exist. This image won't do anything" echo " Protecting you from yourself and erroring out here..." exit 1 fi if [ -e "${imgname}" ]; then if [ "${FORCE}" = "y" ]; then echo "Removing existing bootable image..." rm -rf "${imgname}" else echo "Error: Image '${imgname}' already exists, aborting." exit 1 fi fi if ! sed "s|%ARCHISO_LABEL%|${LABEL}|g; s|%INSTALL_DIR%|${INSTALL_DIR}|g; s|%ARCH%|${ARCH}|g" -i ${work_dir}/iso/syslinux/syslinux.cfg; then echo "Error: ${work_dir}/iso/syslinux/syslinux.cfg, doesn't exist, aborting." exit 1 fi } command_iso () { _imgcommon echo "Creating ISO image..." qflag="" [ "${QUIET}" = "y" ] && qflag="-quiet" mkisofs ${qflag} -r -l \ -b syslinux/isolinux.bin -c syslinux/boot.cat \ -uid 0 -gid 0 \ -udf -allow-limited-size -iso-level 3 \ -input-charset utf-8 -p "prepared by mkarchiso" \ -no-emul-boot -boot-load-size 4 -boot-info-table \ -publisher "${PUBLISHER}" \ -A "${APPLICATION}" \ -V "${LABEL}" \ -o "${imgname}" "${work_dir}/iso/" isohybrid "${imgname}" } # Go through the main commands in order. If 'all' was specified, then we want # to do everything. Start with 'install'. if [ "${command_name}" = "create" ]; then command_create fi if [ "${command_name}" = "iso" ]; then command_iso fi # vim:ts=4:sw=4:et: