#!/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. m4_include(lib/common.sh) CHROOT_VERSION='v2' FORCE='n' RUN='' NOCOPY='n' working_dir='' APPNAME=$(basename "${0}") # usage: usage <exitvalue> usage() { echo "usage ${APPNAME} [options] working-dir [package-list | app]" echo ' options:' echo ' -r <app> Run "app" within the context of the chroot' echo ' -u Update the chroot via pacman' echo ' -f Force overwrite of files in the working-dir' echo ' -C <file> Location of a pacman config file' echo ' -M <file> Location of a makepkg config file' echo ' -n Do not copy config files into the chroot' echo ' -c <dir> Set pacman cache' echo ' -h This message' exit 1 } while getopts 'r:ufnhC:M:c:' arg; do case "${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 ;; *) error "invalid argument '${arg}'"; usage ;; esac done if (( $EUID != 0 )); then die 'This script must be run as root.' fi shift $(($OPTIND - 1)) if [[ -z $RUN ]] && (( $# < 2 )); then die 'You must specify a directory and one or more packages.' elif (( $# < 1 )); then die 'You must specify a directory.' fi working_dir="$(readlink -f ${1})" shift 1 [[ -z $working_dir ]] && die 'Please specify a working directory.' if [[ -z $cache_dir ]]; then cache_dirs=($(pacman -v $cache_conf 2>&1 | grep '^Cache Dirs:' | sed 's/Cache Dirs:\s*//g')) else cache_dirs=(${cache_dir}) fi host_mirror=$(pacman -Sddp extra/devtools 2>/dev/null | sed -E 's#(.*/)extra/os/.*#\1$repo/os/$arch#') if echo "${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 -o bind /sys "${working_dir}/sys" mount -o remount,ro,bind "${working_dir}/sys" [[ -e "${working_dir}/proc" ]] || mkdir "${working_dir}/proc" mount -t proc proc -o nosuid,noexec,nodev "${working_dir}/proc" mount -o bind /proc/sys "${working_dir}/proc/sys" mount -o remount,ro,bind "${working_dir}/proc/sys" [[ -e "${working_dir}/dev" ]] || mkdir "${working_dir}/dev" mount -t tmpfs dev "${working_dir}/dev" -o mode=0755,size=10M,nosuid,strictatime 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 "${working_dir}/dev/ptmx" c 5 2 mknod -m 666 "${working_dir}/dev/tty0" c 4 0 mknod -m 666 "${working_dir}/dev/full" c 1 7 mknod -m 666 "${working_dir}/dev/rtc0" c 254 0 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 -o bind /dev/pts "${working_dir}/dev/pts" [[ -e "${working_dir}/run" ]] || mkdir "${working_dir}/run" mount -t tmpfs tmpfs "${working_dir}/run" -o nodev,nosuid,strictatime,size=64M 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 "${working_dir}/${host_mirror_path}" fi local cache_dir_first=true for cache_dir in ${cache_dirs[@]}; do [[ -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 ! ${cache_dir_first}; then mount -o remount,ro,bind "${working_dir}/${cache_dir}" else cache_dir_first=false fi done trap 'chroot_umount' EXIT INT QUIT TERM HUP } copy_hostconf () { cp /etc/resolv.conf "${working_dir}/etc/resolv.conf" cp -a /etc/pacman.d/gnupg "${working_dir}/etc/pacman.d" echo "Server = ${host_mirror}" > ${working_dir}/etc/pacman.d/mirrorlist if [[ -n $pac_conf && $NOCOPY = 'n' ]]; then cp ${pac_conf} ${working_dir}/etc/pacman.conf fi if [[ -n $makepkg_conf && $NOCOPY = 'n' ]]; then cp ${makepkg_conf} ${working_dir}/etc/makepkg.conf fi sed -r "s|^#?\\s*CacheDir.+|CacheDir = $(echo -n ${cache_dirs[@]})|g" -i ${working_dir}/etc/pacman.conf } chroot_umount () { umount "${working_dir}/proc/sys" 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}/run" for cache_dir in ${cache_dirs[@]}; do umount "${working_dir}/${cache_dir}" done [[ -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 stat_busy "Locking chroot" flock 9 stat_done fi } # }}} umask 0022 if [[ -n $RUN ]]; then # run chroot {{{ #Sanity check if [[ ! -f "${working_dir}/.arch-chroot" ]]; then die "'${working_dir}' does not appear to be a Arch chroot." elif [[ $(cat "${working_dir}/.arch-chroot") != ${CHROOT_VERSION} ]]; then die "'${working_dir}' is not compatible with ${APPNAME} version ${CHROOT_VERSION}. Please rebuild." fi chroot_lock chroot_mount copy_hostconf eval unshare -mui -- chroot "${working_dir}" ${RUN} # }}} else # {{{ build chroot if [[ -e $working_dir && $FORCE = 'n' ]]; then die "Working directory '${working_dir}' already exists - try using -f" 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} ${cache_dirs[@]/#/--cachedir=}" if [[ -n $pac_conf ]]; then pacargs="$pacargs --config=${pac_conf}" fi if (( $# != 0 )); then op='-Sy' if [[ $FORCE = 'y' ]]; then op="${op}f" fi if ! pacman ${op} ${pacargs} $@; then die 'Failed to install all packages' fi fi if [[ -d "${working_dir}/lib/modules" ]]; then ldconfig -r "${working_dir}" fi if [[ -e "${working_dir}/etc/locale.gen" ]]; then sed -i 's@^#\(en_US\|de_DE\)\(\.UTF-8\)@\1\2@' "${working_dir}/etc/locale.gen" chroot "${working_dir}" /usr/sbin/locale-gen fi echo 'UTC' > "${working_dir}/etc/timezone" ln -s /usr/share/zoneinfo/UTC "${working_dir}/etc/localtime" echo 'LANG=C' > "${working_dir}/etc/locale.conf" copy_hostconf echo "${CHROOT_VERSION}" > "${working_dir}/.arch-chroot" # }}} fi