diff options
Diffstat (limited to 'libexec/container/remove')
| -rwxr-xr-x | libexec/container/remove | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/libexec/container/remove b/libexec/container/remove new file mode 100755 index 0000000..75ebd60 --- /dev/null +++ b/libexec/container/remove @@ -0,0 +1,257 @@ +#!/bin/sh + +# Copyright (C) 2014-2021 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 + +PROJECT="open-infrastructure" +PROGRAM="container" +COMMAND="$(basename ${0})" + +CONFIG="/etc/${PROJECT}/${PROGRAM}/config" +HOOKS="/etc/${PROJECT}/${PROGRAM}/hooks" +MACHINES="/var/lib/machines" + +Parameters () +{ + OPTIONS_ALL="" + + GETOPT_LONGOPTIONS="name:,allow-stop,force,verbose," + GETOPT_OPTIONS="n:,f,v," + + PARAMETERS="$(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 + ;; + + --allow-stop) + ALLOW_STOP="true" + shift 1 + + OPTIONS_ALL="${OPTIONS_ALL} --allow-stop" + ;; + + -f|--force) + FORCE="true" + shift 1 + + OPTIONS_ALL="${OPTIONS_ALL} --force" + ;; + + -v|--verbose) + VERBOSE="true" + shift 1 + + OPTIONS_ALL="${OPTIONS_ALL} --verbose" + ;; + + --) + shift 1 + break + ;; + + *) + echo "'${COMMAND}': getopt error" >&2 + exit 1 + ;; + esac + done +} + +Usage () +{ + echo "Usage: ${PROGRAM} ${COMMAND} -n|--name NAME [--allow-stop] [-f|--force] [-v|--verbose]" >&2 + exit 1 +} + +Rmdir () +{ + DIRECTORIES="${@}" + + 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 "${NAME}" ] +then + Usage +fi + +case "${NAME}" in + ALL) + NAMES="$(${PROGRAM} list --format shell --stopped)" + + for NAME in ${NAMES} + do + ${PROGRAM} remove --name ${NAME} ${OPTIONS_ALL} || true + done + + exit 0 + ;; +esac + +if [ ! -e "${MACHINES}/${NAME}" ] && [ ! -e "${CONFIG}/${NAME}.conf" ] +then + echo "'${NAME}': no such container" >&2 + exit 1 +fi + +STATE="$(machinectl show ${NAME} 2>&1 | awk -FState= '/^State=/ { print $2 }')" + +case "${STATE}" in + running) + case "${ALLOW_STOP}" in + true) + echo "'${NAME}': container is started, stopping it now" >&2 + ${PROGRAM} stop -n ${NAME} + ;; + + *) + echo "'${NAME}': container is started" >&2 + exit 1 + ;; + esac + ;; +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 -Fbind= '/^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 -Fbind-ro= '/^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 +case "${VERBOSE}" in + true) + echo -n "Removing container ${NAME}..." + ;; +esac + +rm --preserve-root --one-file-system -rf ${RM_OPTIONS} "${MACHINES}/${NAME}" +rm -f ${RM_OPTIONS} "${CONFIG}/${NAME}.conf" + +case "${VERBOSE}" in + true) + echo " done." + ;; +esac + +# Post hooks +for FILE in "${HOOKS}/post-${COMMAND}".* "${HOOKS}/${NAME}.post-${COMMAND}" +do + if [ -x "${FILE}" ] + then + "${FILE}" + fi +done |