librechroot


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#!/bin/bash
# LibreChRoot
# Enters a chroot

# Copyright 2010 Nicolás Reynolds

# ---------- GNU General Public License 3 ----------
 
# This file is part of Parabola. 
 
# Parabola 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, either version 3 of the License, or 
# (at your option) any later version. 
 
# Parabola 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. 
 
# You should have received a copy of the GNU General Public License 
# along with Parabola. If not, see <http://www.gnu.org/licenses/>. 

source /etc/libretools.conf

[[ "$UID" != "0" ]] && {
    error "This script must be run as root."
    exit 1
}

custom_config=${XDG_CONFIG_HOME}/libretools/libretools.conf
[[ -e ${custom_config} ]] && source ${custom_config}

# Enter the chroot copy by default
root=${1:-$CHCOPY}
CACHEDIR=${CACHEDIR:-/var/cache/pacman/pkg}

[[ ! -d ${CHROOTDIR}/${root} ]] && {
    error "${CHROOTDIR}/$root is not a dir."
    exit 1
}

mount -t proc proc ${CHROOTDIR}/${root}/proc/
mount -t sysfs sys ${CHROOTDIR}/${root}/sys/
mount -o bind /dev ${CHROOTDIR}/${root}/dev/

# Share pacman cache
mount -o bind ${CACHEDIR} ${CHROOTDIR}/${root}/var/cache/pacman/pkg

cp -L /etc/resolv.conf ${CHROOTDIR}/${root}/etc/resolv.conf

chroot ${CHROOTDIR}/${root} /bin/bash

umount ${CHROOTDIR}/${root}/proc/
umount ${CHROOTDIR}/${root}/sys/
umount ${CHROOTDIR}/${root}/dev/
umount ${CHROOTDIR}/${root}/var/cache/pacman/pkg

exit 0