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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="$OPTARG" ;;
u) RUN='pacman -Syu' ;;
f) FORCE='y' ;;
C) pac_conf="$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' $cache_conf || echo 'CacheDir = /var/cache/pacman/pkg') | sed 's/CacheDir\s*=\s*//')
unset cache_conf
fi
# {{{ functions
chroot_mount() {
[ -e "${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 "${working_dir}/dev"
mount -o bind /dev "${working_dir}/dev"
[ -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}/${cache_dir}"
trap 'chroot_umount' 0 1 2 15
}
copy_hostconf () {
cp /etc/mtab "${working_dir}/etc/mtab"
cp /etc/resolv.conf "${working_dir}/etc/resolv.conf"
}
chroot_umount () {
umount "${working_dir}/proc"
umount "${working_dir}/sys"
umount "${working_dir}/dev"
umount "${working_dir}/${cache_dir}"
}
# }}}
umask 0022
if [ "$RUN" != "" ]; then
# run chroot {{{
#Sanity check
if [ ! -f "${working_dir}/.arch-chroot" ]; then
echo "error: '${working_dir}' does not appear to be a Arch chroot"
echo ' please build the image using mkarchroot'
exit 1
fi
chroot_mount
copy_hostconf
chroot "${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
mkdir -p "${working_dir}/var/lib/pacman/"
mkdir -p "${working_dir}/etc/"
chroot_mount
pacargs='--noconfirm -v ' #--noprogressbar -v
pacargs="$pacargs --root=${working_dir}"
# pacman takes these as relative to the given root
pacargs="$pacargs --cachedir=${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
cp /etc/locale.gen "${working_dir}/etc/locale.gen"
chroot "${working_dir}" locale-gen
fi
if [ ! -e "${working_dir}/.arch-chroot" ]; then
date +%s > "${working_dir}/.arch-chroot"
fi
# }}}
fi
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