summaryrefslogtreecommitdiffstats
path: root/libexec/container/stop
blob: 2d81523637c58b6f189e82164ca3dfe0386e02c2 (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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
#!/bin/sh

# Copyright (C) 2014-2022 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"

CLEAN="false"

Parameters ()
{
	OPTIONS_ALL=""

	GETOPT_LONGOPTIONS="name:,force,interactive,kill,clean,verbose,"
	GETOPT_OPTIONS="n:,f,i,k,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

				OPTIONS_ALL="${OPTIONS_ALL} --force"
				;;

			-i|--interactive)
				INTERACTIVE="true"
				shift 1

				OPTIONS_ALL="${OPTIONS_ALL} --interactive"
				;;

			-k|--kill)
				KILL="true"
				shift 1

				OPTIONS_ALL="${OPTIONS_ALL} --kill"
				;;

			--clean)
				# internal option
				CLEAN="true"
				shift 1

				OPTONS_ALL="${OPTIONS_ALL} --clean"
				;;

			-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 [-f|--force] [-i|--interactive] [-v|--verbose]" >&2
	echo
	echo "See ${COMMAND}(1), ${PROGRAM}(1) and ${PROJECT}(7) for more information."

	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 --started)"

		for NAME in ${NAMES}
		do
			${PROGRAM} stop --name ${NAME} ${OPTIONS_ALL} || true
		done

		exit 0
		;;
esac

if [ ! -e "${MACHINES}/${NAME}" ]
then
	echo "'${NAME}': no such container" >&2
	exit 1
fi

if systemctl status systemd-networkd > /dev/null 2>&1
then
	NETWORK_SUBSYSTEM="systemd-networkd"
else
	NETWORK_SUBSYSTEM="ifupdown"
fi

# Pre hooks
for FILE in "${HOOKS}/pre-${COMMAND}".* "${HOOKS}/${NAME}.pre-${COMMAND}"
do
	if [ -x "${FILE}" ]
	then
		"${FILE}"
	fi
done

STATE="$(machinectl show ${NAME} 2>&1 | awk -FState= '/^State=/ { print $2 }')"

case "${CLEAN}" in
	true)
		# Removing overlay mounts
		CNT_OVERLAY="$(awk -Fcnt.overlay= '/^cnt.overlay=/ { print $2 }' ${CONFIG}/${NAME}.conf)"

		if [ -n "${CNT_OVERLAY}" ]
		then
			CNT_OVERLAYS="$(echo ${CNT_OVERLAY} | sed -e 's|;| |g')"

			for CNT_OVERLAY in ${CNT_OVERLAYS}
			do
				DIRECTORY_LOWER="$(echo ${CNT_OVERLAY} | awk -F: '{ print $1 }')"
				DIRECTORY_UPPER="$(echo ${CNT_OVERLAY} | awk -F: '{ print $2 }')"
				DIRECTORY_WORK="$(echo ${CNT_OVERLAY} | awk -F: '{ print $3 }')"
				DIRECTORY_MERGED="$(echo ${CNT_OVERLAY} | awk -F: '{ print $4 }')"

				umount -f "${DIRECTORY_MERGED}"

				Rmdir "${DIRECTORY_LOWER}" "${DIRECTORY_UPPER}" "${DIRECTORY_WORK}" "${DIRECTORY_MERGED}"
			done
		fi

		# 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

		# Removing network configuration
		VETHS="$(awk -Fnetwork-veth-extra= '/^network-veth-extra=/ { print $2 }' ${CONFIG}/${NAME}.conf)"

		case "${VETHS}" in
			"")
				;;

			*)
				for VETH in ${VETHS}
				do
					INTERFACE="$(echo ${VETH} | awk -F: '{ print $1 }')"

					case "${NETWORK_SUBSYSTEM}" in
						ifupdown)
							FILE="/etc/network/interfaces.d/${INTERFACE}"
							;;

						systemd-networkd)
							FILE="/run/systemd/network/${INTERFACE}.network"
							;;
					esac

					if [ -f "${FILE}" ]
					then
						rm -f "${FILE}"
					fi
				done
				;;
		esac

		exit 0
		;;

	*)
		;;
esac

case "${STATE}" in
	running)
		;;

	*)
		echo "'${NAME}': container is already stopped" >&2
		exit 1
		;;
esac

case "${KILL}" in
	true)
		MODE="terminate"
		;;

	*)
		MODE="poweroff"
		;;
esac

if [ "${FORCE}" != "true" ] || [ "${INTERACTIVE}" = "true" ]
then
	echo -n "'${NAME}': stop container '${NAME}' [y|N]? "
	read STOP

	STOP="$(echo ${STOP} | tr '[A-Z]' '[a-z]')"

	case "${STOP}" in
		y|yes)
			;;

		*)
			exit 1
			;;
	esac
fi

# Run
case "${VERBOSE}" in
	true)
		echo -n "Stopping container ${NAME}..."
		;;
esac

machinectl ${MODE} ${NAME}

case "${KILL}" in
	true)
		VETHS="$(awk -Fnetwork-veth-extra= '/^network-veth-extra=/ { print $2 }' ${CONFIG}/${NAME}.conf | awk -F: '{ print $1 }')"

		for VETH in ${VETHS}
		do
			ip link delete ${VETH} > /dev/null 2>&1 || true
		done

		rm -f "${MACHINES}/.#${NAME}.lck"
		;;
esac

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