#!/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 ' -c <dir> Set pacman cache. Default: /var/cache/pacman/pkg' echo ' -h This message' exit $1 } while getopts 'r:ufnhC:M:c:' arg; do case "${arg}" in r) RUN="$OPTARG" ;; u) RUN='/bin/sh -c "pacman -Syu --noconfirm && (pacman -Qqu >/dev/null && pacman -Su --noconfirm || exit 0)"' ;; f) FORCE='y' ;; C) pac_conf="$OPTARG" ;; M) makepkg_conf="$OPTARG" ;; n) NOCOPY='y' ;; c) cache_dir="$OPTARG" ;; 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 if [ -z "$cache_dir" ]; then cache_conf=${working_dir}/etc/pacman.conf [ ! -f $cache_conf ] && cache_conf=${pac_conf:-/etc/pacman.conf} cache_dir=$( (grep -m 1 '^CacheDir' $cache_conf || echo 'CacheDir = /var/cache/pacman/pkg') | sed 's/CacheDir\s*=\s*//') unset cache_conf fi if [ -f /etc/pacman.d/mirrorlist ]; then host_mirror=$(pacman -Sdp extra/devtools 2>/dev/null | sed -E 's#(.*/)extra/os/.*#\1$repo/os/$arch#') fi if [ -z "${host_mirror}" ]; then host_mirror='http://mirrors.kernel.org/archlinux/$repo/os/$arch' fi if echo "${host_mirror}" | grep -q 'file://'; then host_mirror_path=$(echo "${host_mirror}" | sed -E 's#file://(/.*)/\$repo/os/\$arch#\1#g') fi # {{{ functions chroot_mount() { [ -e "${working_dir}/sys" ] || mkdir "${working_dir}/sys" mount -t sysfs sysfs "${working_dir}/sys" [ -e "${working_dir}/proc" ] || mkdir "${working_dir}/proc" mount -t proc proc "${working_dir}/proc" [ -e "${working_dir}/dev" ] || mkdir "${working_dir}/dev" mount -t tmpfs dev "${working_dir}/dev" -o mode=0755,size=10M,nosuid mknod -m 666 "${working_dir}/dev/null" c 1 3 mknod -m 666 "${working_dir}/dev/zero" c 1 5 mknod -m 600 "${working_dir}/dev/console" c 5 1 mknod -m 644 "${working_dir}/dev/random" c 1 8 mknod -m 644 "${working_dir}/dev/urandom" c 1 9 mknod -m 666 "${working_dir}/dev/tty" c 5 0 mknod -m 666 "${working_dir}/dev/tty0" c 4 0 mknod -m 666 "${working_dir}/dev/full" c 1 7 ln -s /proc/kcore "${working_dir}/dev/core" ln -s /proc/self/fd "${working_dir}/dev/fd" ln -s /proc/self/fd/0 "${working_dir}/dev/stdin" ln -s /proc/self/fd/1 "${working_dir}/dev/stdout" ln -s /proc/self/fd/2 "${working_dir}/dev/stderr" [ -e "${working_dir}/dev/shm" ] || mkdir "${working_dir}/dev/shm" mount -t tmpfs shm "${working_dir}/dev/shm" -o nodev,nosuid,size=128M [ -e "${working_dir}/dev/pts" ] || mkdir "${working_dir}/dev/pts" mount -t devpts devpts "${working_dir}/dev/pts" -o newinstance,ptmxmode=666 ln -s pts/ptmx "${working_dir}/dev/ptmx" [ -e "${cache_dir}" ] || mkdir -p "${cache_dir}" [ -e "${working_dir}/${cache_dir}" ] || mkdir -p "${working_dir}/${cache_dir}" mount -o bind "${cache_dir}" "${working_dir}/${cache_dir}" if [ -n "${host_mirror_path}" ]; then [ -e "${working_dir}/${host_mirror_path}" ] || mkdir -p "${working_dir}/${host_mirror_path}" mount -o bind "${host_mirror_path}" "${working_dir}/${host_mirror_path}" mount -o remount,ro,bind "${host_mirror_path}" "${working_dir}/${host_mirror_path}" fi trap 'chroot_umount' EXIT INT QUIT TERM HUP } copy_hostconf () { chroot "${working_dir}" /bin/findmnt -rnu -o SOURCE,TARGET,FSTYPE,OPTIONS > "${working_dir}/etc/mtab" cp /etc/resolv.conf "${working_dir}/etc/resolv.conf" echo "Server = ${host_mirror}" > ${working_dir}/etc/pacman.d/mirrorlist } chroot_umount () { umount "${working_dir}/proc" umount "${working_dir}/sys" umount "${working_dir}/dev/pts" umount "${working_dir}/dev/shm" umount "${working_dir}/dev" umount "${working_dir}/${cache_dir}" [ -n "${host_mirror_path}" ] && umount "${working_dir}/${host_mirror_path}" } chroot_lock () { # Only reopen the FD if it wasn't handed to us if [ "$(readlink -f /dev/fd/9)" != "${working_dir}.lock" ]; then exec 9>"${working_dir}.lock" fi # Lock the chroot. Take note of the FD number. if ! flock -n 9; then echo -n "locking chroot..." flock 9 echo "done" fi } # }}} umask 0022 if [ "$RUN" != "" ]; then # run chroot {{{ #Sanity check if [ ! -f "${working_dir}/.arch-chroot" ]; then echo "error: '${working_dir}' does not appear to be a Arch chroot" echo ' please build the image using mkarchroot' exit 1 fi chroot_lock chroot_mount copy_hostconf eval chroot "${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 if { type -P btrfs && btrfs subvolume create "${working_dir}"; } &>/dev/null; then chmod 0755 "${working_dir}" fi mkdir -p "${working_dir}/var/lib/pacman/sync" mkdir -p "${working_dir}/etc/" chroot_lock chroot_mount pacargs="--noconfirm --root=${working_dir} --cachedir=${cache_dir}" if [ "$pac_conf" != "" ]; then pacargs="$pacargs --config=${pac_conf}" fi if [ $# -ne 0 ]; then op='-Sy' if [ "$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 ldconfig -r "${working_dir}" fi if [ "$pac_conf" != "" -a "$NOCOPY" = "n" ]; then cp ${pac_conf} ${working_dir}/etc/pacman.conf fi if [ "$makepkg_conf" != "" -a "$NOCOPY" = "n" ]; then cp ${makepkg_conf} ${working_dir}/etc/makepkg.conf fi if [ -e "${working_dir}/etc/locale.gen" ]; then echo -e 'en_US.UTF-8 UTF-8\nde_DE.UTF-8 UTF-8' > "${working_dir}/etc/locale.gen" chroot "${working_dir}" locale-gen fi if [ ! -e "${working_dir}/.arch-chroot" ]; then date +%s > "${working_dir}/.arch-chroot" fi # }}} fi