f10d88e029
Thanks to Peter Schuller for this hint
232 lines
6.9 KiB
Bash
232 lines
6.9 KiB
Bash
#!/bin/bash
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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FORCE='n'
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RUN=''
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NOCOPY='n'
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working_dir=''
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APPNAME=$(basename "${0}")
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# usage: usage <exitvalue>
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usage() {
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echo "usage ${APPNAME} [options] working-dir [package-list | app]"
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echo ' options:'
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echo ' -r <app> Run "app" within the context of the chroot'
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echo ' -u Update the chroot via pacman'
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echo ' -f Force overwrite of files in the working-dir'
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echo ' -C <file> Location of a pacman config file'
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echo ' -M <file> Location of a makepkg config file'
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echo ' -n Do not copy config files into the chroot'
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echo ' -c <dir> Set pacman cache. Default: /var/cache/pacman/pkg'
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echo ' -h This message'
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exit $1
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}
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while getopts 'r:ufnhC:M:c:' arg; do
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case "${arg}" in
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r) RUN="$OPTARG" ;;
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u) RUN='/bin/sh -c "pacman -Syu --noconfirm && (pacman -Qqu >/dev/null && pacman -Su --noconfirm || exit 0)"' ;;
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f) FORCE='y' ;;
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C) pac_conf="$OPTARG" ;;
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M) makepkg_conf="$OPTARG" ;;
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n) NOCOPY='y' ;;
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c) cache_dir="$OPTARG" ;;
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h|?) usage 0 ;;
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*) echo "invalid argument '${arg}'"; usage 1 ;;
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esac
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done
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if [ "$EUID" != '0' ]; then
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echo 'error: this script must be run as root.'
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exit 1
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fi
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shift $(($OPTIND - 1))
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if [ "$RUN" = '' -a $# -lt 2 ]; then
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echo 'you must specify a directory and one or more packages'
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usage 1
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elif [ $# -lt 1 ]; then
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echo 'you must specify a directory'
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usage 1
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fi
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working_dir="$(readlink -f ${1})"
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shift 1
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[ "${working_dir}" = '' ] && echo 'error: please specify a working directory' && usage 1
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if [ -z "$cache_dir" ]; then
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cache_conf=${working_dir}/etc/pacman.conf
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[ ! -f $cache_conf ] && cache_conf=${pac_conf:-/etc/pacman.conf}
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cache_dir=$( (grep -m 1 '^CacheDir' $cache_conf || echo 'CacheDir = /var/cache/pacman/pkg') | sed 's/CacheDir\s*=\s*//')
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unset cache_conf
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fi
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if [ -f /etc/pacman.d/mirrorlist ]; then
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host_mirror=$(pacman -Sddp extra/devtools 2>/dev/null | sed -E 's#(.*/)extra/os/.*#\1$repo/os/$arch#')
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fi
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if [ -z "${host_mirror}" ]; then
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host_mirror='http://mirrors.kernel.org/archlinux/$repo/os/$arch'
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fi
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if echo "${host_mirror}" | grep -q 'file://'; then
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host_mirror_path=$(echo "${host_mirror}" | sed -E 's#file://(/.*)/\$repo/os/\$arch#\1#g')
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fi
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# {{{ functions
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chroot_mount() {
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[ -e "${working_dir}/sys" ] || mkdir "${working_dir}/sys"
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mount -t sysfs sysfs "${working_dir}/sys"
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[ -e "${working_dir}/proc" ] || mkdir "${working_dir}/proc"
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mount -t proc proc "${working_dir}/proc"
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[ -e "${working_dir}/dev" ] || mkdir "${working_dir}/dev"
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mount -t tmpfs dev "${working_dir}/dev" -o mode=0755,size=10M,nosuid
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mknod -m 666 "${working_dir}/dev/null" c 1 3
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mknod -m 666 "${working_dir}/dev/zero" c 1 5
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mknod -m 600 "${working_dir}/dev/console" c 5 1
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mknod -m 644 "${working_dir}/dev/random" c 1 8
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mknod -m 644 "${working_dir}/dev/urandom" c 1 9
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mknod -m 666 "${working_dir}/dev/tty" c 5 0
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mknod -m 666 "${working_dir}/dev/tty0" c 4 0
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mknod -m 666 "${working_dir}/dev/full" c 1 7
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ln -s /proc/kcore "${working_dir}/dev/core"
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ln -s /proc/self/fd "${working_dir}/dev/fd"
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ln -s /proc/self/fd/0 "${working_dir}/dev/stdin"
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ln -s /proc/self/fd/1 "${working_dir}/dev/stdout"
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ln -s /proc/self/fd/2 "${working_dir}/dev/stderr"
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[ -e "${working_dir}/dev/shm" ] || mkdir "${working_dir}/dev/shm"
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mount -t tmpfs shm "${working_dir}/dev/shm" -o nodev,nosuid,size=128M
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[ -e "${working_dir}/dev/pts" ] || mkdir "${working_dir}/dev/pts"
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mount -t devpts devpts "${working_dir}/dev/pts" -o newinstance,ptmxmode=666
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ln -s pts/ptmx "${working_dir}/dev/ptmx"
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[ -e "${cache_dir}" ] || mkdir -p "${cache_dir}"
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[ -e "${working_dir}/${cache_dir}" ] || mkdir -p "${working_dir}/${cache_dir}"
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mount -o bind "${cache_dir}" "${working_dir}/${cache_dir}"
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if [ -n "${host_mirror_path}" ]; then
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[ -e "${working_dir}/${host_mirror_path}" ] || mkdir -p "${working_dir}/${host_mirror_path}"
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mount -o bind "${host_mirror_path}" "${working_dir}/${host_mirror_path}"
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mount -o remount,ro,bind "${host_mirror_path}" "${working_dir}/${host_mirror_path}"
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fi
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trap 'chroot_umount' EXIT INT QUIT TERM HUP
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}
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copy_hostconf () {
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chroot "${working_dir}" /bin/findmnt -rnu -o SOURCE,TARGET,FSTYPE,OPTIONS > "${working_dir}/etc/mtab"
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cp /etc/resolv.conf "${working_dir}/etc/resolv.conf"
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echo "Server = ${host_mirror}" > ${working_dir}/etc/pacman.d/mirrorlist
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}
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chroot_umount () {
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umount "${working_dir}/proc"
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umount "${working_dir}/sys"
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umount "${working_dir}/dev/pts"
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umount "${working_dir}/dev/shm"
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umount "${working_dir}/dev"
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umount "${working_dir}/${cache_dir}"
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[ -n "${host_mirror_path}" ] && umount "${working_dir}/${host_mirror_path}"
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}
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chroot_lock () {
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# Only reopen the FD if it wasn't handed to us
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if [ "$(readlink -f /dev/fd/9)" != "${working_dir}.lock" ]; then
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exec 9>"${working_dir}.lock"
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fi
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# Lock the chroot. Take note of the FD number.
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if ! flock -n 9; then
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echo -n "locking chroot..."
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flock 9
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echo "done"
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fi
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}
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# }}}
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umask 0022
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if [ "$RUN" != "" ]; then
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# run chroot {{{
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#Sanity check
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if [ ! -f "${working_dir}/.arch-chroot" ]; then
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echo "error: '${working_dir}' does not appear to be a Arch chroot"
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echo ' please build the image using mkarchroot'
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exit 1
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fi
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chroot_lock
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chroot_mount
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copy_hostconf
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eval chroot "${working_dir}" ${RUN}
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# }}}
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else
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# {{{ build chroot
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if [ -e "${working_dir}" -a "${FORCE}" = "n" ]; then
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echo "error: working dir '${working_dir}' already exists - try using -f"
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exit 1
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fi
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if { type -P btrfs && btrfs subvolume create "${working_dir}"; } &>/dev/null; then
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chmod 0755 "${working_dir}"
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fi
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mkdir -p "${working_dir}/var/lib/pacman/sync"
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mkdir -p "${working_dir}/etc/"
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chroot_lock
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chroot_mount
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pacargs="--noconfirm --root=${working_dir} --cachedir=${cache_dir}"
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if [ "$pac_conf" != "" ]; then
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pacargs="$pacargs --config=${pac_conf}"
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fi
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if [ $# -ne 0 ]; then
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op='-Sy'
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if [ "$FORCE" = "y" ]; then
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op="${op}f"
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fi
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if ! pacman ${op} ${pacargs} $@; then
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echo 'error: failed to install all packages'
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exit 1
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fi
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fi
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if [ -d "${working_dir}/lib/modules" ]; then
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ldconfig -r "${working_dir}"
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fi
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if [ "$pac_conf" != "" -a "$NOCOPY" = "n" ]; then
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cp ${pac_conf} ${working_dir}/etc/pacman.conf
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fi
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if [ "$makepkg_conf" != "" -a "$NOCOPY" = "n" ]; then
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cp ${makepkg_conf} ${working_dir}/etc/makepkg.conf
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fi
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if [ -e "${working_dir}/etc/locale.gen" ]; then
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sed -i 's@^#\(en_US\|de_DE\)\(\.UTF-8\)@\1\2@' "${working_dir}/etc/locale.gen"
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chroot "${working_dir}" /usr/sbin/locale-gen
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fi
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if [ ! -e "${working_dir}/.arch-chroot" ]; then
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date +%s > "${working_dir}/.arch-chroot"
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fi
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# }}}
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fi
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