manjaro-tools/bin/manjaro-chroot.in

#!/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.

version=@version@

shopt -s extglob

LIBDIR='@libdir@'
SYSCONFDIR='@sysconfdir@'

[[ -r ${LIBDIR}/util-msg.sh ]] && source ${LIBDIR}/util-msg.sh

import ${LIBDIR}/util.sh
import ${LIBDIR}/util-mount.sh

display_settings(){
	show_version
	show_config

	msg "ARGS:"
	msg2 "automount: ${automount}"
	msg2 "run_args: ${run_args}"

	msg "PATHS:"
	msg2 "chrootdir: ${chrootdir}"
}

load_user_info

load_config "${USER_CONFIG}/manjaro-tools.conf"
load_config "${SYSCONFDIR}/manjaro-tools.conf"

automount=false
pretend=false

usage() {
	echo "usage: ${0##*/} -a [or] ${0##*/} chroot-dir [command]"
	echo '    -a             Automount detected linux system'
	echo '    -q             Query settings and pretend'
	echo '    -h             Print this help message'
	echo ''
	echo "    If 'command' is unspecified, ${0##*/} will launch /bin/sh."
	echo ''
	echo "    If 'automount' is true, ${0##*/} will launch /bin/bash"
	echo "    and ${chroots_dir}/manjaro-chroot."
	echo ''
	echo ''
	exit $1
}

orig_argv=("$@")

opts=':haq'

while getopts ${opts} arg; do
	case "${arg}" in
		a) automount=true ;;
		q) pretend=true ;;
		h|?) usage 0 ;;
		*) echo "invalid argument ${arg}"; usage 1 ;;
	esac
done
shift $(( OPTIND - 1 ))

check_root "$0" "${orig_argv[@]}"

if ${automount};then
	chrootdir=${chroots_dir}/manjaro-chroot
	prepare_dir ${chrootdir}
	run_args=/bin/bash

	${pretend} && display_settings && exit 1

	if [[ -d /run/systemd ]]; then
		systemctl start lvm2-lvmetad
	else
		rc-service lvm start
	fi

	os_list=$(detect)
	select_os
else
	chrootdir=$1
	shift
	run_args=$@

	[[ -d ${chrootdir} ]] || die "Can't create chroot on non-directory %s" "${chrootdir}"

	${pretend} && display_settings && exit 1

	chroot_api_mount "${chrootdir}" || die "failed to setup API filesystems in chroot %s" "${chrootdir}"
	chroot_mount /etc/resolv.conf "${chrootdir}/etc/resolv.conf" --bind
fi

SHELL=/bin/sh unshare --fork --pid chroot "${chrootdir}" "${run_args}"