#!/bin/bash # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; version 2 of the License. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. FORCE="n" RUN="" NOCOPY="n" working_dir="" APPNAME=$(basename "${0}") # usage: usage <exitvalue> usage () { echo "usage ${APPNAME} [options] working-dir [package-list | app]" echo " options:" echo " -r <app> Run 'app' within the context of the chroot" echo " -u Update the chroot via pacman" echo " -f Force overwrite of files in the working-dir" echo " -C <file> location of a pacman config file" echo " -M <file> location of a makepkg config file" echo " -n do not copy config files into the chroot" echo " -h This message" exit $1 } while getopts 'r:ufhC:M:' arg; do case "${arg}" in r) RUN="$OPTARG" ;; u) RUN="pacman -Syu" ;; f) FORCE="y" ;; C) pac_conf="$OPTARG" ;; M) makepkg_conf="$OPTARG" ;; n) NOCOPY="y" ;; h|?) usage 0 ;; *) echo "invalid argument '${arg}'"; usage 1 ;; esac done if [ "$EUID" != "0" ]; then echo "error: this script must be run as root." exit 1 fi shift $(($OPTIND - 1)) if [ "$RUN" = "" -a $# -lt 2 ]; then echo "you must specify a directory and one or more packages" usage 1 elif [ $# -lt 1 ]; then echo "you must specify a directory" usage 1 fi working_dir="$(readlink -f ${1})" shift 1 [ "${working_dir}" = "" ] && echo "error: please specify a working directory" && usage 1 # {{{ functions chroot_mount () { echo "mounting sysfs : /sys" [ -e "${working_dir}/sys" ] || mkdir "${working_dir}/sys" mount -t sysfs sysfs "${working_dir}/sys" echo "mounting procfs : /proc" [ -e "${working_dir}/proc" ] || mkdir "${working_dir}/proc" mount -t proc proc "${working_dir}/proc" echo "binding device nodes : /dev" [ -e "${working_dir}/dev" ] || mkdir "${working_dir}/dev" mount -o bind /dev "${working_dir}/dev" echo "binding pacman cache : /var/cache/pacman" [ -e "${working_dir}/var/cache/pacman" ] || mkdir -p "${working_dir}/var/cache/pacman" mount -o bind /var/cache/pacman "${working_dir}/var/cache/pacman" trap 'chroot_umount' 0 1 2 15 } copy_hostconf () { echo "copying mtab : /etc/mtab" cp /etc/mtab "${working_dir}/etc/mtab" echo "copying resolv.conf : /etc/resolv.conf" cp /etc/resolv.conf "${working_dir}/etc/resolv.conf" } chroot_umount () { echo "cleaning up mounts" umount "${working_dir}/proc" umount "${working_dir}/sys" umount "${working_dir}/dev" umount "${working_dir}/var/cache/pacman" } # }}} if [ "$RUN" != "" ]; then # run chroot {{{ #Sanity check if [ ! -f "${working_dir}/.arch-chroot" ]; then echo "error: '${working_dir}' does not appear to be a Arch chroot" echo " please build the image using mkarchroot" exit 1 fi chroot_mount copy_hostconf echo "starting chroot ($RUN)" chroot "${working_dir}" ${RUN} # }}} else # {{{ build chroot if [ -e "${working_dir}" -a "${FORCE}" = "n" ]; then echo "error: working dir '${working_dir}' already exists - try using -f" exit 1 fi mkdir -p "${working_dir}/var/lib/pacman/" mkdir -p "${working_dir}/etc/" chroot_mount pacargs="--noconfirm -v " #--noprogressbar -v pacargs="$pacargs --root=${working_dir}" # pacman takes these as relative to the given root pacargs="$pacargs --cachedir=/var/cache/pacman/pkg" if [ "$pac_conf" != "" ]; then pacargs="$pacargs --config=${pac_conf}" fi if [ $# -eq 0 ]; then echo "no packages to install" else echo "installing packages:" for i in $@; do echo -e "\t$i"; done op="-Sy" if [ "$FORCE" = "y" ]; then op="${op}f" fi if ! pacman ${op} ${pacargs} $@; then echo "error: failed to install all packages" exit 1 fi fi if [ -d "${working_dir}/lib/modules" ]; then echo "running ldconfig" ldconfig -r "${working_dir}" fi if [ "$pac_conf" != "" -a "$NOCOPY" = "n" ]; then echo "installing custom pacman.conf" cp ${pac_conf} ${working_dir}/etc/pacman.conf fi if [ "$makepkg_conf" != "" -a "$NOCOPY" = "n" ]; then echo "installing custom makepkg.conf" cp ${makepkg_conf} ${working_dir}/etc/makepkg.conf fi if [ -e "${working_dir}/etc/locale.gen" ]; then echo "generating default locales from host system" cp /etc/locale.gen "${working_dir}/etc/locale.gen" chroot "${working_dir}" locale-gen fi if [ ! -e "${working_dir}/.arch-chroot" ]; then date +%s > "${working_dir}/.arch-chroot" fi # }}} fi # vim:ft=sh:ts=4:sw=4:et: