Yu Watanabe
5c60d3011f
We passes log level through kernel command line. It is not necessary to set to debug level at the beginning, and set to info at the end. This is important when a test has several subtests. If a subtest sets log level to info at the end, then subsequent tests may not generate any useful logs.
386 lines
11 KiB
Bash
Executable File
386 lines
11 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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# shellcheck disable=SC2317
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set -eux
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set -o pipefail
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# shellcheck source=test/units/test-control.sh
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. "$(dirname "$0")"/test-control.sh
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if [[ -n "${COVERAGE_BUILD_DIR:-}" ]]; then
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echo "TEST-38-FREEZER freezes when systemd is built with coverage enabled" >/skipped
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exit 77
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fi
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unit=TEST-38-FREEZER-sleep.service
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start_test_service() {
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systemctl daemon-reload
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systemctl start "${unit}"
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}
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dbus_freeze() {
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local name object_path suffix
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suffix="${1##*.}"
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name="${1%".$suffix"}"
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object_path="/org/freedesktop/systemd1/unit/${name//-/_2d}_2e${suffix}"
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busctl call \
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org.freedesktop.systemd1 \
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"${object_path}" \
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org.freedesktop.systemd1.Unit \
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Freeze
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}
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dbus_thaw() {
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local name object_path suffix
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suffix="${1##*.}"
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name="${1%".$suffix"}"
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object_path="/org/freedesktop/systemd1/unit/${name//-/_2d}_2e${suffix}"
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busctl call \
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org.freedesktop.systemd1 \
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"${object_path}" \
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org.freedesktop.systemd1.Unit \
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Thaw
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}
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dbus_freeze_unit() {
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busctl call \
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org.freedesktop.systemd1 \
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/org/freedesktop/systemd1 \
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org.freedesktop.systemd1.Manager \
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FreezeUnit \
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s \
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"$1"
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}
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dbus_thaw_unit() {
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busctl call \
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org.freedesktop.systemd1 \
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/org/freedesktop/systemd1 \
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org.freedesktop.systemd1.Manager \
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ThawUnit \
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s \
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"$1"
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}
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check_freezer_state() {
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local name state expected
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name="${1:?}"
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expected="${2:?}"
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# Ignore the intermediate freezing & thawing states in case we check the unit state too quickly.
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timeout 10 bash -c "while [[ \"\$(systemctl show \"$name\" --property FreezerState --value)\" =~ (freezing|thawing) ]]; do sleep .5; done"
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state="$(systemctl show "$name" --property FreezerState --value)"
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[[ "$state" = "$expected" ]] || {
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echo "error: unexpected freezer state, expected: $expected, actual: $state" >&2
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exit 1
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}
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}
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check_cgroup_state() {
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# foo.unit -> /system.slice/foo.unit/
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# foo.slice/ -> /foo.slice/./
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# foo.slice/foo.unit -> /foo.slice/foo.unit/
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local slice unit
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unit="${1##*/}"
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slice="${1%"$unit"}"
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slice="${slice%/}"
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grep -q "frozen $2" /sys/fs/cgroup/"${slice:-system.slice}"/"${unit:-.}"/cgroup.events
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}
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testcase_dbus_api() {
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echo "Test that DBus API works:"
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echo -n " - Freeze(): "
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dbus_freeze "${unit}"
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check_freezer_state "${unit}" "frozen"
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check_cgroup_state "$unit" 1
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echo "[ OK ]"
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echo -n " - Thaw(): "
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dbus_thaw "${unit}"
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check_freezer_state "${unit}" "running"
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check_cgroup_state "$unit" 0
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echo "[ OK ]"
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echo -n " - FreezeUnit(): "
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dbus_freeze_unit "${unit}"
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check_freezer_state "${unit}" "frozen"
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check_cgroup_state "$unit" 1
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echo "[ OK ]"
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echo -n " - ThawUnit(): "
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dbus_thaw_unit "${unit}"
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check_freezer_state "${unit}" "running"
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check_cgroup_state "$unit" 0
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echo "[ OK ]"
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echo -n " - CanFreeze: "
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[[ "$(systemctl show "${unit}" --property=CanFreeze --value)" == 'yes' ]]
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echo "[ OK ]"
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echo
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}
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testcase_systemctl() {
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echo "Test that systemctl freeze/thaw verbs:"
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systemctl start "$unit"
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echo -n " - freeze: "
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systemctl freeze "$unit"
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check_freezer_state "${unit}" "frozen"
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check_cgroup_state "$unit" 1
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# Freezing already frozen unit should be NOP and return quickly
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timeout 3s systemctl freeze "$unit"
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echo "[ OK ]"
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echo -n " - thaw: "
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systemctl thaw "$unit"
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check_freezer_state "${unit}" "running"
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check_cgroup_state "$unit" 0
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# Likewise thawing already running unit shouldn't block
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timeout 3s systemctl thaw "$unit"
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echo "[ OK ]"
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systemctl stop "$unit"
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echo
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}
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testcase_systemctl_show() {
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echo "Test systemctl show integration:"
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systemctl start "$unit"
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echo -n " - FreezerState property: "
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state=$(systemctl show -p FreezerState --value "$unit")
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[ "$state" = "running" ]
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systemctl freeze "$unit"
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state=$(systemctl show -p FreezerState --value "$unit")
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[ "$state" = "frozen" ]
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systemctl thaw "$unit"
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echo "[ OK ]"
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echo -n " - CanFreeze property: "
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state=$(systemctl show -p CanFreeze --value "$unit")
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[ "$state" = "yes" ]
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echo "[ OK ]"
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systemctl stop "$unit"
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echo
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}
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testcase_recursive() {
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local slice="bar.slice"
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local unit="baz.service"
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systemd-run --unit "$unit" --slice "$slice" sleep 3600 >/dev/null 2>&1
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echo "Test recursive freezing:"
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echo -n " - freeze/thaw parent: "
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systemctl freeze "$slice"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen-by-parent"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl thaw "$slice"
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check_freezer_state "$slice" "running"
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check_freezer_state "$unit" "running"
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check_cgroup_state "$slice/" 0
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check_cgroup_state "$slice/$unit" 0
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echo "[ OK ]"
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echo -n " - child freeze/thaw during frozen parent: "
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systemctl freeze "$slice"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen-by-parent"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl freeze "$unit"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl thaw "$unit"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen-by-parent"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl thaw "$slice"
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check_freezer_state "$slice" "running"
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check_freezer_state "$unit" "running"
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check_cgroup_state "$slice/" 0
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check_cgroup_state "$slice/$unit" 0
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echo "[ OK ]"
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echo -n " - pre-frozen child not thawed by parent: "
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systemctl freeze "$unit"
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check_freezer_state "$slice" "running"
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check_freezer_state "$unit" "frozen"
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check_cgroup_state "$slice/" 0
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check_cgroup_state "$slice/$unit" 1
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systemctl freeze "$slice"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl thaw "$slice"
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check_freezer_state "$slice" "running"
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check_freezer_state "$unit" "frozen"
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check_cgroup_state "$slice/" 0
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check_cgroup_state "$slice/$unit" 1
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echo "[ OK ]"
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echo -n " - pre-frozen child demoted and thawed by parent: "
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systemctl freeze "$slice"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl thaw "$unit"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen-by-parent"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl thaw "$slice"
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check_freezer_state "$slice" "running"
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check_freezer_state "$unit" "running"
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check_cgroup_state "$slice/" 0
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check_cgroup_state "$slice/$unit" 0
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echo "[ OK ]"
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echo -n " - child promoted and not thawed by parent: "
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systemctl freeze "$slice"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen-by-parent"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl freeze "$unit"
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check_freezer_state "$slice" "frozen"
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check_freezer_state "$unit" "frozen"
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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systemctl thaw "$slice"
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check_freezer_state "$slice" "running"
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check_freezer_state "$unit" "frozen"
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check_cgroup_state "$slice/" 0
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check_cgroup_state "$slice/$unit" 1
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echo "[ OK ]"
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echo -n " - can't stop a frozen unit: "
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(! systemctl -q stop "$unit" )
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echo "[ OK ]"
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systemctl thaw "$unit"
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systemctl stop "$unit"
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systemctl stop "$slice"
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echo
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}
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testcase_preserve_state() {
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local slice="bar.slice"
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local unit="baz.service"
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systemd-run --unit "$unit" --slice "$slice" sleep 3600 >/dev/null 2>&1
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echo "Test that freezer state is preserved when recursive freezing is initiated from outside (e.g. by manager up the tree):"
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echo -n " - freeze from outside: "
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echo 1 >/sys/fs/cgroup/"$slice"/cgroup.freeze
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# Give kernel some time to freeze the slice
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sleep 1
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# Our state should not be affected
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check_freezer_state "$slice" "running"
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check_freezer_state "$unit" "running"
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# However actual kernel state should be frozen
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check_cgroup_state "$slice/" 1
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check_cgroup_state "$slice/$unit" 1
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echo "[ OK ]"
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echo -n " - thaw from outside: "
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echo 0 >/sys/fs/cgroup/"$slice"/cgroup.freeze
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sleep 1
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check_freezer_state "$unit" "running"
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check_freezer_state "$slice" "running"
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check_cgroup_state "$slice/" 0
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check_cgroup_state "$slice/$unit" 0
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echo "[ OK ]"
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echo -n " - thaw from outside while inner service is frozen: "
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systemctl freeze "$unit"
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check_freezer_state "$unit" "frozen"
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echo 1 >/sys/fs/cgroup/"$slice"/cgroup.freeze
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echo 0 >/sys/fs/cgroup/"$slice"/cgroup.freeze
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check_freezer_state "$slice" "running"
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check_freezer_state "$unit" "frozen"
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echo "[ OK ]"
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systemctl thaw "$unit"
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systemctl stop "$unit"
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systemctl stop "$slice"
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echo
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}
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testcase_watchdog() {
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local unit="wd.service"
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systemd-run --collect --unit "$unit" --property WatchdogSec=4s --property Type=notify \
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bash -c 'systemd-notify --ready; while true; do systemd-notify WATCHDOG=1; sleep 1; done'
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systemctl freeze "$unit"
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check_freezer_state "$unit" "frozen"
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sleep 6
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check_freezer_state "$unit" "frozen"
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systemctl thaw "$unit"
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check_freezer_state "$unit" "running"
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sleep 6
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check_freezer_state "$unit" "running"
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systemctl is-active "$unit"
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systemctl freeze "$unit"
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check_freezer_state "$unit" "frozen"
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systemctl daemon-reload
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sleep 6
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check_freezer_state "$unit" "frozen"
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systemctl thaw "$unit"
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check_freezer_state "$unit" "running"
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sleep 6
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check_freezer_state "$unit" "running"
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systemctl is-active "$unit"
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systemctl freeze "$unit"
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check_freezer_state "$unit" "frozen"
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systemctl daemon-reexec
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sleep 6
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check_freezer_state "$unit" "frozen"
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systemctl thaw "$unit"
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check_freezer_state "$unit" "running"
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sleep 6
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check_freezer_state "$unit" "running"
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systemctl is-active "$unit"
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systemctl stop "$unit"
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}
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if [[ -e /sys/fs/cgroup/system.slice/cgroup.freeze ]]; then
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start_test_service
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run_testcases
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fi
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touch /testok
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