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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=""
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 " -h This message"
exit $1
}
while getopts 'r:ufhC:M:' arg; do
case "${arg}" in
r) RUN="$OPTARG" ;;
u) RUN="pacman -Syu" ;;
f) FORCE="y" ;;
C) pac_conf="$OPTARG" ;;
M) makepkg_conf="$OPTARG" ;;
h|?) usage 0 ;;
*) echo "invalid argument '${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
# {{{ functions
chroot_mount ()
{
echo "mounting sysfs : /sys"
[ -e "${working_dir}/sys" ] || mkdir "${working_dir}/sys"
mount -t sysfs sysfs "${working_dir}/sys"
echo "mounting procfs : /proc"
[ -e "${working_dir}/proc" ] || mkdir "${working_dir}/proc"
mount -t proc proc "${working_dir}/proc"
echo "binding device nodes : /dev"
[ -e "${working_dir}/dev" ] || mkdir "${working_dir}/dev"
mount -o bind /dev "${working_dir}/dev"
echo "binding pacman cache : /var/cache/pacman"
[ -e "${working_dir}/var/cache/pacman" ] || mkdir -p "${working_dir}/var/cache/pacman"
mount -o bind /var/cache/pacman "${working_dir}/var/cache/pacman"
trap 'chroot_umount' 0 1 2 15
}
copy_hostconf ()
{
echo "copying mtab : /etc/mtab"
cp /etc/mtab "${working_dir}/etc/mtab"
echo "copying resolv.conf : /etc/resolv.conf"
cp /etc/resolv.conf "${working_dir}/etc/resolv.conf"
}
chroot_umount ()
{
echo "cleaning up mounts"
umount "${working_dir}/proc"
umount "${working_dir}/sys"
umount "${working_dir}/dev"
umount "${working_dir}/var/cache/pacman"
}
# }}}
if [ "$RUN" != "" ]; then
# run chroot {{{
#Sanity check
if [ ! -f "${working_dir}/.arch-chroot" ]; then
echo "error: '${working_dir}' does not appear to be a Arch chroot"
echo " please build the image using mkarchroot"
exit 1
fi
chroot_mount
copy_hostconf
echo "starting chroot ($RUN)"
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="$pacargs --cachedir=/var/cache/pacman/pkg"
if [ "$pac_conf" != "" ]; then
pacargs="$pacargs --config=${pac_conf}"
fi
if [ $# -eq 0 ]; then
echo "no packages to install"
else
echo "installing packages:"
for i in $@; do echo -e "\t$i"; done
op="-Sy"
if [ "$FORCE" = "y" ]; then
op="${op} --force"
fi
if ! pacman ${op} ${pacargs} $@; then
echo "error: failed to install all packages"
exit 1
fi
fi
if [ -d "${working_dir}/lib/modules" ]; then
echo "running ldconfig"
ldconfig -r "${working_dir}"
fi
if [ "$pac_conf" != "" ]; then
echo "installing custom pacman.conf"
cp ${pac_conf} ${working_dir}/etc/pacman.conf
fi
if [ "$makepkg_conf" != "" ]; then
echo "installing custom makepkg.conf"
cp ${makepkg_conf} ${working_dir}/etc/makepkg.conf
fi
echo "generating default locales"
cp /etc/locale.gen "${working_dir}/etc/locale.gen"
chroot "${working_dir}" locale-gen
if [ ! -e "${working_dir}/.arch-chroot" ]; then
date +%s > "${working_dir}/.arch-chroot"
fi
# }}}
fi
# vim:ft=sh:ts=4:sw=4:et:
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