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| -rw-r--r-- | man/systemd.unit.xml | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/man/systemd.unit.xml b/man/systemd.unit.xml index 032879a0af..960fb90dbd 100644 --- a/man/systemd.unit.xml +++ b/man/systemd.unit.xml @@ -900,6 +900,7 @@ <term><varname>ConditionSecurity=</varname></term> <term><varname>ConditionCapability=</varname></term> <term><varname>ConditionACPower=</varname></term> + <term><varname>ConditionNeedsUpdate=</varname></term> <term><varname>ConditionPathExists=</varname></term> <term><varname>ConditionPathExistsGlob=</varname></term> <term><varname>ConditionPathIsDirectory=</varname></term> @@ -1068,6 +1069,33 @@ all AC connectors are disconnected from a power source.</para> + <para><varname>ConditionNeedsUpdate=</varname> + takes one of <filename>/var</filename> + or <filename>/etc</filename> as + argument, possibly prefixed with a + <literal>!</literal> (for inverting + the condition). This condition may be + used to conditionalize units on + whether the specified directory + requires an update because + <filename>/usr</filename>'s + modification time is newer than the + stamp file + <filename>.updated</filename> in the + specified directory. This is useful to + implement offline updates of the + vendor operating system resources in + <filename>/usr</filename> that require + updating of <filename>/etc</filename> + or <filename>/var</filename> on the + next following boot. Units making use + of this condition should order + themselves before + <citerefentry><refentrytitle>systemd-update-done.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + to make sure they run before the stamp + files's modification time gets reset + indicating a completed update.</para> + <para>With <varname>ConditionPathExists=</varname> a file existence condition is |