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service: set TRIGGER_UNIT= and TRIGGER_PATH= on activation by path unit

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When a service is triggered by a path unit, pass the
path unit name and the path that triggered it via env vars
to the spawned processes.
Note that this is best-effort, as there might be many triggers
at the same time, but we only get woken up by one.
This commit is contained in:
Luca Boccassi
2022-08-23 20:38:08 +01:00
parent 48b92b37ac
commit 4c42032854
9 changed files with 184 additions and 11 deletions
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test/units/testsuite-63.sh
+13
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@@ -28,6 +28,19 @@ test "$(systemctl show test63.service -P Result)" = success
test "$(systemctl show test63.path -P ActiveState)" = active
test "$(systemctl show test63.path -P Result)" = success
# Test that glob matching works too, with $TRIGGER_PATH
systemctl start test63-glob.path
touch /tmp/test63-glob-foo
timeout 60 bash -c 'while ! systemctl -q is-active test63-glob.service; do sleep .2; done'
test "$(systemctl show test63-glob.service -P ActiveState)" = active
test "$(systemctl show test63-glob.service -P Result)" = success
test "$(busctl --json=short get-property org.freedesktop.systemd1 /org/freedesktop/systemd1/unit/test63_2dglob_2eservice org.freedesktop.systemd1.Unit ActivationDetails)" = '{"type":"a(ss)","data":[["trigger_unit","test63-glob.path"],["trigger_path","/tmp/test63-glob-foo"]]}'
systemctl stop test63-glob.path test63-glob.service
test "$(busctl --json=short get-property org.freedesktop.systemd1 /org/freedesktop/systemd1/unit/test63_2dglob_2eservice org.freedesktop.systemd1.Unit ActivationDetails)" = '{"type":"a(ss)","data":[]}'
systemctl log-level info
echo OK >/testok