<?xml version="1.0"?> <!--*-nxml-*--> <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"> <!-- SPDX-License-Identifier: LGPL-2.1-or-later --> <refentry id="systemd-update-done.service"> <refentryinfo> <title>systemd-update-done.service</title> <productname>systemd</productname> </refentryinfo> <refmeta> <refentrytitle>systemd-update-done.service</refentrytitle> <manvolnum>8</manvolnum> </refmeta> <refnamediv> <refname>systemd-update-done.service</refname> <refname>systemd-update-done</refname> <refpurpose>Mark <filename>/etc/</filename> and <filename>/var/</filename> fully updated</refpurpose> </refnamediv> <refsynopsisdiv> <para><filename>systemd-update-done.service</filename></para> <para><filename>/usr/lib/systemd/systemd-update-done</filename></para> </refsynopsisdiv> <refsect1> <title>Description</title> <para><filename>systemd-update-done.service</filename> is a service that is invoked as part of the first boot after the vendor operating system resources in <filename>/usr/</filename> have been updated. This is useful to implement offline updates of <filename>/usr/</filename> which might require updates to <filename>/etc/</filename> or <filename>/var/</filename> on the following boot.</para> <para><filename>systemd-update-done.service</filename> updates the file modification time (mtime) of the stamp files <filename>/etc/.updated</filename> and <filename>/var/.updated</filename> to the modification time of the <filename>/usr/</filename> directory, unless the stamp files are already newer.</para> <para>Services that shall run after offline upgrades of <filename>/usr/</filename> should order themselves before <filename>systemd-update-done.service</filename>, and use the <varname>ConditionNeedsUpdate=</varname> (see <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>) condition to make sure to run when <filename>/etc/</filename> or <filename>/var/</filename> are older than <filename>/usr/</filename> according to the modification times of the files described above. This requires that updates to <filename>/usr/</filename> are always followed by an update of the modification time of <filename>/usr/</filename>, for example by invoking <citerefentry project='man-pages'><refentrytitle>touch</refentrytitle><manvolnum>1</manvolnum></citerefentry> on it.</para> <para>Note that if the <varname>systemd.condition_needs_update=</varname> kernel command line option is used it overrides the <varname>ConditionNeedsUpdate=</varname> unit condition checks. In that case <filename>systemd-update-done.service</filename> will not reset the condition state until a follow-up reboot where the kernel switch is not specified anymore.</para> </refsect1> <refsect1> <title>See Also</title> <para><simplelist type="inline"> <member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member> <member><citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry></member> <member><citerefentry project='man-pages'><refentrytitle>touch</refentrytitle><manvolnum>1</manvolnum></citerefentry></member> </simplelist></para> </refsect1> </refentry>