#!/bin/sh # container-tools - Manage systemd-nspawn containers # Copyright (C) 2014-2017 Daniel Baumann <daniel.baumann@open-infrastructure.net> # # 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 ${0})" CONFIG="/etc/container-tools/config" HOOKS="/etc/container-tools/hooks" MACHINES="/var/lib/machines" Parameters () { GETOPT_LONGOPTIONS="name:,force,verbose," GETOPT_OPTIONS="n:,f,v," PARAMETERS="$(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 "${1}" in -n|--name) NAME="${2}" shift 2 ;; -f|--force) FORCE="true" shift 1 ;; -f|--verbose) VERBOSE="true" shift 1 ;; --) shift 1 break ;; *) echo "'${COMMAND}': getopt error" >&2 exit 1 ;; esac done } Usage () { echo "Usage: container ${COMMAND} -n|--name NAME [-f|--force] [-v|--verbose]" >&2 exit 1 } Rmdir () { DIRECTORIES="${@}" for DIRECTORY in ${DIRECTORIES} do PARENT_DIRECTORY="/$(echo ${DIRECTORY} | cut -d / -f 2)" if [ "${PARENT_DIRECTORY}" != "${DIRECTORY}" ] then # the directory is at least two levels down from / cd "${PARENT_DIRECTORY}" CRUFT="$(echo ${DIRECTORY} | cut -d / -f 3-)" rmdir --ignore-fail-on-non-empty --parents "${CRUFT}" > /dev/null 2>&1 || true cd "${OLDPWD}" fi done } Parameters "${@}" if [ -z "${NAME}" ] then Usage fi if [ ! -e "${MACHINES}/${NAME}" ] && [ ! -e "${CONFIG}/${NAME}.conf" ] then echo "'${NAME}': no such container" >&2 exit 1 fi STATE="$(machinectl show ${NAME} 2>&1 | awk -F= '/^State=/ { print $2 }')" case "${STATE}" in running) echo "'${NAME}': container is started" >&2 exit 1 ;; esac case "${FORCE}" in true) ;; *) echo -n "'${NAME}': remove container '${NAME}' [y|N]? " read FORCE FORCE="$(echo ${FORCE} | tr [A-Z] [a-z])" case "${FORCE}" in y|yes) ;; *) exit 1 ;; esac ;; esac case "${VERBOSE}" in true) RM_OPTIONS="--verbose" ;; *) RM_OPTIONS="" ;; esac # Pre hooks for FILE in "${HOOKS}/pre-${COMMAND}".* "${HOOKS}/${NAME}.pre-${COMMAND}" do if [ -x "${FILE}" ] then "${FILE}" fi done # data if [ -e "${CONFIG}/${NAME}.conf" ] then # Removing 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 ${BINDS} do DIRECTORY="$(echo ${BIND} | awk -F: '{ print $1 }')" Rmdir "${DIRECTORY}" done fi # Removing 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 ${BINDS_RO} do DIRECTORY="$(echo ${BIND_RO} | awk -F: '{ print $1 }')" Rmdir "${DIRECTORY}" done fi fi # Run rm --preserve-root --one-file-system -rf ${RM_OPTIONS} "${MACHINES}/${NAME}" rm -f ${RM_OPTIONS} "${CONFIG}/${NAME}.conf" # Post hooks for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}" do if [ -x "${FILE}" ] then "${FILE}" fi done