summaryrefslogtreecommitdiffstats
path: root/test/units/testsuite-38.sh
blob: c5f9bcc22c8a68b95083a1e91a4a4876c727e048 (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
#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later

set -eux
set -o pipefail

systemd-analyze log-level debug

unit=testsuite-38-sleep.service

start_test_service() {
    systemctl daemon-reload
    systemctl start "${unit}"
}

dbus_freeze() {
    local name object_path suffix

    suffix="${1##*.}"
    name="${1%".$suffix"}"
    object_path="/org/freedesktop/systemd1/unit/${name//-/_2d}_2e${suffix}"

    busctl call \
           org.freedesktop.systemd1 \
           "${object_path}" \
           org.freedesktop.systemd1.Unit \
           Freeze
}

dbus_thaw() {
    local name object_path suffix

    suffix="${1##*.}"
    name="${1%".$suffix"}"
    object_path="/org/freedesktop/systemd1/unit/${name//-/_2d}_2e${suffix}"

    busctl call \
           org.freedesktop.systemd1 \
           "${object_path}" \
           org.freedesktop.systemd1.Unit \
           Thaw
}

dbus_freeze_unit() {
    busctl call \
           org.freedesktop.systemd1 \
           /org/freedesktop/systemd1 \
           org.freedesktop.systemd1.Manager \
           FreezeUnit \
           s \
           "$1"
}

dbus_thaw_unit() {
    busctl call \
           org.freedesktop.systemd1 \
           /org/freedesktop/systemd1 \
           org.freedesktop.systemd1.Manager \
           ThawUnit \
           s \
           "$1"
}

dbus_can_freeze() {
    local name object_path suffix

    suffix="${1##*.}"
    name="${1%".$suffix"}"
    object_path="/org/freedesktop/systemd1/unit/${name//-/_2d}_2e${suffix}"

    busctl get-property \
           org.freedesktop.systemd1 \
           "${object_path}" \
           org.freedesktop.systemd1.Unit \
           CanFreeze
}

check_freezer_state() {
    local name object_path suffix

    suffix="${1##*.}"
    name="${1%".$suffix"}"
    object_path="/org/freedesktop/systemd1/unit/${name//-/_2d}_2e${suffix}"

    for _ in {0..10}; do
        state=$(busctl get-property \
                       org.freedesktop.systemd1 \
                       "${object_path}" \
                       org.freedesktop.systemd1.Unit \
                       FreezerState | cut -d " " -f2 | tr -d '"')

        # Ignore the intermediate freezing & thawing states in case we check
        # the unit state too quickly
        [[ "$state" =~ ^(freezing|thawing)$ ]] || break
        sleep .5
    done

    [ "$state" = "$2" ] || {
        echo "error: unexpected freezer state, expected: $2, actual: $state" >&2
        exit 1
    }
}

check_cgroup_state() {
    grep -q "frozen $2" /sys/fs/cgroup/system.slice/"$1"/cgroup.events
}

test_dbus_api() {
    echo "Test that DBus API works:"
    echo -n "  - Freeze(): "
    dbus_freeze "${unit}"
    check_freezer_state "${unit}" "frozen"
    check_cgroup_state "$unit" 1
    echo "[ OK ]"

    echo -n "  - Thaw(): "
    dbus_thaw "${unit}"
    check_freezer_state "${unit}" "running"
    check_cgroup_state "$unit" 0
    echo "[ OK ]"

    echo -n "  - FreezeUnit(): "
    dbus_freeze_unit "${unit}"
    check_freezer_state "${unit}" "frozen"
    check_cgroup_state "$unit" 1
    echo "[ OK ]"

    echo -n "  - ThawUnit(): "
    dbus_thaw_unit "${unit}"
    check_freezer_state "${unit}" "running"
    check_cgroup_state "$unit" 0
    echo "[ OK ]"

    echo -n "  - CanFreeze(): "
    output=$(dbus_can_freeze "${unit}")
    [ "$output" = "b true" ]
    echo "[ OK ]"

    echo
}

test_jobs() {
    local pid_before=
    local pid_after=
    echo "Test that it is possible to apply jobs on frozen units:"

    systemctl start "${unit}"
    dbus_freeze "${unit}"
    check_freezer_state "${unit}" "frozen"

    echo -n "  - restart: "
    pid_before=$(systemctl show -p MainPID "${unit}" --value)
    systemctl restart "${unit}"
    pid_after=$(systemctl show -p MainPID "${unit}" --value)
    [ "$pid_before" != "$pid_after" ] && echo "[ OK ]"

    dbus_freeze "${unit}"
    check_freezer_state "${unit}" "frozen"

    echo -n "  - stop: "
    timeout 5s systemctl stop "${unit}"
    echo "[ OK ]"

    echo
}

test_systemctl() {
    echo "Test that systemctl freeze/thaw verbs:"

    systemctl start "$unit"

    echo -n "  - freeze: "
    systemctl freeze "$unit"
    check_freezer_state "${unit}" "frozen"
    check_cgroup_state "$unit" 1
    # Freezing already frozen unit should be NOP and return quickly
    timeout 3s systemctl freeze "$unit"
    echo "[ OK ]"

    echo -n "  - thaw: "
    systemctl thaw "$unit"
    check_freezer_state "${unit}" "running"
    check_cgroup_state "$unit" 0
    # Likewise thawing already running unit shouldn't block
    timeout 3s systemctl thaw "$unit"
    echo "[ OK ]"

    systemctl stop "$unit"

    echo
}

test_systemctl_show() {
    echo "Test systemctl show integration:"

    systemctl start "$unit"

    echo -n "  - FreezerState property: "
    state=$(systemctl show -p FreezerState --value "$unit")
    [ "$state" = "running" ]
    systemctl freeze "$unit"
    state=$(systemctl show -p FreezerState --value "$unit")
    [ "$state" = "frozen" ]
    systemctl thaw "$unit"
    echo "[ OK ]"

    echo -n "  - CanFreeze property: "
    state=$(systemctl show -p CanFreeze --value "$unit")
    [ "$state" = "yes" ]
    echo "[ OK ]"

    systemctl stop "$unit"
    echo
}

test_recursive() {
    local slice="bar.slice"
    local unit="baz.service"

    systemd-run --unit "$unit" --slice "$slice" sleep 3600 >/dev/null 2>&1

    echo "Test recursive freezing:"

    echo -n "  - freeze: "
    systemctl freeze "$slice"
    check_freezer_state "${slice}" "frozen"
    check_freezer_state "${unit}" "frozen"
    grep -q "frozen 1" /sys/fs/cgroup/"${slice}"/cgroup.events
    grep -q "frozen 1" /sys/fs/cgroup/"${slice}"/"${unit}"/cgroup.events
    echo "[ OK ]"

    echo -n "  - thaw: "
    systemctl thaw "$slice"
    check_freezer_state "${unit}" "running"
    check_freezer_state "${slice}" "running"
    grep -q "frozen 0" /sys/fs/cgroup/"${slice}"/cgroup.events
    grep -q "frozen 0" /sys/fs/cgroup/"${slice}"/"${unit}"/cgroup.events
    echo "[ OK ]"

    systemctl stop "$unit"
    systemctl stop "$slice"

    echo
}

test_preserve_state() {
    local slice="bar.slice"
    local unit="baz.service"

    systemd-run --unit "$unit" --slice "$slice" sleep 3600 >/dev/null 2>&1

    echo "Test that freezer state is preserved when recursive freezing is initiated from outside (e.g. by manager up the tree):"

    echo -n "  - freeze from outside: "
    echo 1 >/sys/fs/cgroup/"${slice}"/cgroup.freeze
    # Give kernel some time to freeze the slice
    sleep 1

    # Our state should not be affected
    check_freezer_state "${slice}" "running"
    check_freezer_state "${unit}" "running"

    # However actual kernel state should be frozen
    grep -q "frozen 1" /sys/fs/cgroup/"${slice}"/cgroup.events
    grep -q "frozen 1" /sys/fs/cgroup/"${slice}"/"${unit}"/cgroup.events
    echo "[ OK ]"

    echo -n "  - thaw from outside: "
    echo 0 >/sys/fs/cgroup/"${slice}"/cgroup.freeze
    sleep 1

    check_freezer_state "${unit}" "running"
    check_freezer_state "${slice}" "running"
    grep -q "frozen 0" /sys/fs/cgroup/"${slice}"/cgroup.events
    grep -q "frozen 0" /sys/fs/cgroup/"${slice}"/"${unit}"/cgroup.events
    echo "[ OK ]"

    echo -n "  - thaw from outside while inner service is frozen: "
    systemctl freeze "$unit"
    check_freezer_state "${unit}" "frozen"
    echo 1 >/sys/fs/cgroup/"${slice}"/cgroup.freeze
    echo 0 >/sys/fs/cgroup/"${slice}"/cgroup.freeze
    check_freezer_state "${slice}" "running"
    check_freezer_state "${unit}" "frozen"
    echo "[ OK ]"

    systemctl stop "$unit"
    systemctl stop "$slice"

    echo
}

test -e /sys/fs/cgroup/system.slice/cgroup.freeze && {
    start_test_service
    test_dbus_api
    test_systemctl
    test_systemctl_show
    test_jobs
    test_recursive
    test_preserve_state
}

echo OK >/testok
exit 0