#!/bin/sh # container-tools - Manage systemd-nspawn containers # Copyright (C) 2014-2018 Daniel Baumann <daniel.baumann@open-infrastructure.net> # # SPDX-License-Identifier: GPL-3.0+ # # 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, either version 3 of the License, or # (at your option) any later version. # # 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. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. set -e COMMAND="$(basename ${0})" CONFIG="/etc/container-tools/config" HOOKS="/etc/container-tools/hooks" MACHINES="/var/lib/machines" Parameters () { GETOPT_LONGOPTIONS="force,new:,old:," GETOPT_OPTIONS="f,n:,o:," PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${COMMAND} --options ${GETOPT_OPTIONS} --shell sh -- ${@})" if [ "${?}" != "0" ] then echo "'${COMMAND}': getopt exit" >&2 exit 1 fi eval set -- "${PARAMETERS}" while true do case "${1}" in -f|--force) FORCE="true" shift 1 ;; -n|--new) NEW="${2}" shift 2 ;; -o|--old) OLD="${2}" shift 2 ;; --) shift 1 break ;; *) echo "'${COMMAND}': getopt error" >&2 exit 1 ;; esac done } Usage () { echo "Usage: container ${COMMAND} [-f|--force] -n|--new NAME -o|--old NAME" >&2 exit 1 } Parameters "${@}" if [ -z "${OLD}" ] || [ -z "${NEW}" ] then Usage fi if [ ! -e "${MACHINES}/${OLD}" ] then echo "'${OLD}': no such container" >&2 exit 1 fi if [ -e "${MACHINES}/${NEW}" ] then echo "'${NEW}': container already exists" >&2 exit 1 fi STATE="$(machinectl show ${OLD} 2>&1 | awk -F= '/^State=/ { print $2 }')" case "${STATE}" in running) echo "'${OLD}': container is started" >&2 exit 1 ;; esac case "${FORCE}" in true) ;; *) if container list --other | grep -qs "^${OLD}$" then echo -n "'${OLD}': rename container to '${NEW}' [y|N]? " read FORCE FORCE="$(echo ${FORCE} | tr [A-Z] [a-z])" case "${FORCE}" in y|yes) ;; *) exit 1 ;; esac fi ;; esac # Pre hooks for FILE in "${HOOKS}/pre-${COMMAND}".* "${HOOKS}/${NAME}.pre-${COMMAND}" do if [ -x "${FILE}" ] then "${FILE}" fi done # Run mv "${CONFIG}/${OLD}.conf" "${CONFIG}/${NEW}.conf" mv "${MACHINES}/${OLD}" "${MACHINES}/${NEW}" # rw bind mounts BIND="$(awk -F= '/^bind=/ { print $2 }' ${CONFIG}/${NAME}.conf)" if [ -n "${BIND}" ] then BINDS="$(echo ${BIND} | sed -e 's|;| |g')" for BIND in ${BINDS} do SOURCE_OLD="$(echo ${BIND} | awk -F: '{ print $1 }')" SOURCE_NEW="$(echo ${SOURCE_OLD} | sed -e "s|${OLD}|${NEW}|g")" if [ "${SOURCE_OLD}" != "${SOURCE_NEW}" ] then mv "${SOURCE_OLD}" "${SOURCE_NEW}" fi TARGET_OLD="$(echo ${BIND} | awk -F: '{ print $2 }')" TARGET_NEW="$(echo ${TARGET_OLD} | sed -e "s|${OLD}|${NEW}|g")" if [ "${TARGET_OLD}" != "${TARGET_NEW}" ] then mv "${MACHINES}/${NEW}/${TARGET_OLD}" "${MACHINES}/${NEW}/${TARGET_NEW}" fi done fi # ro bind mounts BIND_RO="$(awk -F= '/^bind-ro=/ { print $2 }' ${CONFIG}/${NAME}.conf)" if [ -n "${BIND_RO}" ] then BINDS_RO="$(echo ${BIND_RO} | sed -e 's|;| |g')" for BIND_RO in ${BINDS_RO} do SOURCE_OLD="$(echo ${BIND_RO} | awk -F: '{ print $1 }')" SOURCE_NEW="$(echo ${SOURCE_OLD} | sed -e "s|${OLD}|${NEW}|g")" if [ "${SOURCE_OLD}" != "${SOURCE_NEW}" ] then mv "${SOURCE_OLD}" "${SOURCE_NEW}" fi TARGET_OLD="$(echo ${BIND_RO} | awk -F: '{ print $2 }')" TARGET_NEW="$(echo ${TARGET_OLD} | sed -e "s|${OLD}|${NEW}|g")" if [ "${TARGET_OLD}" != "${TARGET_NEW}" ] then mv "${MACHINES}/${NEW}/${TARGET_OLD}" "${MACHINES}/${NEW}/${TARGET_NEW}" fi done fi # config sed -i -e "s|${OLD}|${NEW}|g" "${CONFIG}/${NEW}.conf" # Post hooks for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}" do if [ -x "${FILE}" ] then "${FILE}" fi done