summaryrefslogtreecommitdiffstats
path: root/lib/container/remove
blob: 1b1ba7d8ae1a3e68789570e806bbbbd9441cec3e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
#!/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
}

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 --ignore-fail-on-non-empty --parents ${DIRECTORY} > /dev/null 2>&1 || true
		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 --ignore-fail-on-non-empty --parents ${DIRECTORY} > /dev/null 2>&1 || true
		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