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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.
m4_include(lib/common.sh)
CHROOT_VERSION='v3'
working_dir=''
usage() {
echo "Usage: ${0##*/} [options] working-dir [systemd-nspawn arguments]"
echo "A wrapper around systemd-nspawn. Provides support for pacman."
echo
echo ' options:'
echo ' -C <file> Location of a pacman config file'
echo ' -M <file> Location of a makepkg config file'
echo ' -c <dir> Set pacman cache'
echo ' -h This message'
exit 1
}
while getopts 'hC:M:c:' arg; do
case "$arg" in
C) pac_conf="$OPTARG" ;;
M) makepkg_conf="$OPTARG" ;;
c) cache_dir="$OPTARG" ;;
h|?) usage ;;
*) error "invalid argument '$arg'"; usage ;;
esac
done
shift $(($OPTIND - 1))
(( $EUID != 0 )) && die 'This script must be run as root.'
(( $# < 1 )) && die 'You must specify a directory.'
working_dir="$(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=$(pacman -Sddp extra/devtools 2>/dev/null | sed -r 's#(.*/)extra/os/.*#\1$repo/os/$arch#')
[[ $host_mirror == *file://* ]] && host_mirror_path=$(echo "$host_mirror" | sed -r 's#file://(/.*)/\$repo/os/\$arch#\1#g')
# {{{ functions
build_mount_args() {
local p
declare -g mount_args=()
if [[ -n $host_mirror_path ]]; then
printf -v p '%q' "$host_mirror_path"
mount_args+=(--bind-ro="$p")
fi
printf -v p '%q' "${cache_dirs[0]}"
mount_args+=(--bind="$p")
for cache_dir in ${cache_dirs[@]:1}; do
printf -v p '%q' "$cache_dir"
mount_args+=(--bind-ro="$p")
done
}
copy_hostconf () {
cp -a /etc/pacman.d/gnupg "$working_dir/etc/pacman.d"
echo "Server = $host_mirror" > $working_dir/etc/pacman.d/mirrorlist
[[ -n $pac_conf ]] && cp $pac_conf $working_dir/etc/pacman.conf
[[ -n $makepkg_conf ]] && cp $makepkg_conf $working_dir/etc/makepkg.conf
sed -r "s|^#?\\s*CacheDir.+|CacheDir = $(echo -n ${cache_dirs[@]})|g" -i $working_dir/etc/pacman.conf
}
# }}}
umask 0022
# Sanity check
if [[ ! -f "$working_dir/.arch-chroot" ]]; then
die "'$working_dir' does not appear to be a Arch chroot."
elif [[ $(cat "$working_dir/.arch-chroot") != $CHROOT_VERSION ]]; then
die "chroot '$working_dir' is not at version $CHROOT_VERSION. Please rebuild."
fi
build_mount_args
copy_hostconf
eval $(grep '^CARCH=' "$working_dir/etc/makepkg.conf")
exec ${CARCH:+setarch "$CARCH"} systemd-nspawn 2>/dev/null \
-D "$working_dir" \
--machine "${working_dir//\//-}" \
"${mount_args[@]}" \
"$@"
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