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-rw-r--r--mkarchroot.in231
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diff --git a/mkarchroot.in b/mkarchroot.in
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+++ b/mkarchroot.in
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+#!/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 -Sddp 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
+ sed -i 's@^#\(en_US\|de_DE\)\(\.UTF-8\)@\1\2@' "${working_dir}/etc/locale.gen"
+ chroot "${working_dir}" locale-gen
+ fi
+
+ if [ ! -e "${working_dir}/.arch-chroot" ]; then
+ date +%s > "${working_dir}/.arch-chroot"
+ fi
+ # }}}
+fi