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|
#!/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 ${0})"
CONFIG="/etc/container-tools/config"
HOOKS="/etc/container-tools/hooks"
MACHINES="/var/lib/machines"
Parameters ()
{
GETOPT_LONGOPTIONS="name:,allow-stop,force,verbose,"
GETOPT_OPTIONS="n:,f,v,"
PARAMETERS="$(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
;;
-f|--force)
FORCE="true"
shift 1
;;
-v|--verbose)
VERBOSE="true"
shift 1
;;
--)
shift 1
break
;;
*)
echo "'${COMMAND}': getopt error" >&2
exit 1
;;
esac
done
}
Usage ()
{
echo "Usage: container ${COMMAND} -n|--name NAME [--allow-stop] [-f|--force] [-v|--verbose]" >&2
exit 1
}
Rmdir ()
{
DIRECTORIES="${@}"
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 "${NAME}" ]
then
Usage
fi
if [ ! -e "${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)
case "${ALLOW_STOP}" in
true)
echo "'${NAME}': container is started, stopping it now" >&2
container 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 -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
|
