From a55654d598c78f8e084aa6a18fec6eff900c9aed Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 13 Jun 2014 12:52:31 +0200 Subject: core: add new ConditionNeedsUpdate= unit condition This new condition allows checking whether /etc or /var are out-of-date relative to /usr. This is the counterpart for the update flag managed by systemd-update-done.service. Services that want to be started once after /usr got updated should use: [Unit] ConditionNeedsUpdate=/etc Before=systemd-update-done.service This makes sure that they are only run if /etc is out-of-date relative to /usr. And that it will be executed after systemd-update-done.service which is responsible for marking /etc up-to-date relative to the current /usr. ConditionNeedsUpdate= will also checks whether /etc is actually writable, and not trigger if it isn't, since no update is possible then. --- units/systemd-update-done.service.in | 2 ++ 1 file changed, 2 insertions(+) (limited to 'units/systemd-update-done.service.in') diff --git a/units/systemd-update-done.service.in b/units/systemd-update-done.service.in index dccb5137d2..1a907f9637 100644 --- a/units/systemd-update-done.service.in +++ b/units/systemd-update-done.service.in @@ -14,6 +14,8 @@ After=systemd-readahead-collect.service systemd-readahead-replay.service local-f Before=sysinit.target shutdown.target RefuseManualStart=yes RefuseManualStop=yes +ConditionNeedsUpdate=|/etc +ConditionNeedsUpdate=|/var [Service] Type=oneshot -- cgit v1.2.3-54-g00ecf