Adding remove-qemu command.

1 files changed, 260 insertions, 0 deletions

diff --git a/libexec/container/remove-qemu b/libexec/container/remove-qemu
new file mode 100755
index 0000000..1b8d8a7
--- /dev/null
+++ b/libexec/container/remove-qemu
@@ -0,0 +1,260 @@
+#!/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 <https://www.gnu.org/licenses/>.
+
+set -e
+
+PROJECT="open-infrastructure"
+SOFTWARE="compute-tools"
+PROGRAM="container"
+COMMAND="$(basename ${0})"
+
+CONFIG="/etc/${SOFTWARE}/config"
+HOOKS="/etc/${SOFTWARE}/hooks"
+MACHINES="/var/lib/machines"
+
+Parameters ()
+{
+	OPTIONS_ALL=""
+
+	GETOPT_LONGOPTIONS="name:,allow-stop,force,verbose,"
+	GETOPT_OPTIONS="n:,f,v,"
+
+	PARAMETERS="$(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}/${NAME}"
+# FIXME image type hardcoded
+rm -f "${MACHINES}/${NAME}.vmdk"
+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