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102 lines
4.6 KiB
XML
102 lines
4.6 KiB
XML
<?xml version="1.0"?>
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<!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-update-done.service">
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<refentryinfo>
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<title>systemd-update-done.service</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-update-done.service</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-update-done.service</refname>
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<refname>systemd-update-done</refname>
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<refpurpose>Mark <filename>/etc</filename> and <filename>/var</filename> fully updated</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-update-done.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-update-done</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-update-done.service</filename>
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is a service that is invoked as part of the first boot
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after the vendor operating system resources in
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<filename>/usr</filename> have been updated. This is
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useful to implement offline updates of
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<filename>/usr</filename> which might requires updates
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to <filename>/etc</filename> or
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<filename>/var</filename> on the following boot.</para>
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<para><filename>systemd-update-done.service</filename>
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updates the file modification time (mtime) of the
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stamp files <filename>/etc/.updated</filename> and
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<filename>/var/.updated</filename> to the modification
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time of the <filename>/usr</filename> directory,
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unless the stamp files are already newer.</para>
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<para>Services that shall run after offline upgrades
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of <filename>/usr</filename> should order themselves
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before
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<filename>systemd-update-done.service</filename>, and
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use the <varname>ConditionNeedsUpdate=</varname> (see
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>)
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condition to make sure to run when
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<filename>/etc</filename> or <filename>/var</filename>
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are older than <filename>/usr</filename> according to
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the modification times of the files described
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above. This requires that updates to
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<filename>/usr</filename> are always followed by an
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update of the modification time of
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<filename>/usr</filename>, for example by invoking
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<citerefentry><refentrytitle>touch</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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on it.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>touch</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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