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man: document systemd-update-done.service

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Lennart Poettering 2014-07-01 00:16:17 +02:00
parent dc7f577501
commit 7caa86ac4d
3 changed files with 109 additions and 1 deletions
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7
Makefile-man.am
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@ -87,6 +87,7 @@ MANPAGES += \
man/systemd-tmpfiles.8 \
man/systemd-tty-ask-password-agent.1 \
man/systemd-udevd.service.8 \
man/systemd-update-done.service.8 \
man/systemd-update-utmp.service.8 \
man/systemd.1 \
man/systemd.automount.5 \
@ -217,6 +218,7 @@ MANPAGES_ALIAS += \
man/systemd-udevd-control.socket.8 \
man/systemd-udevd-kernel.socket.8 \
man/systemd-udevd.8 \
man/systemd-update-done.8 \
man/systemd-update-utmp-runlevel.service.8 \
man/systemd-update-utmp.8 \
man/systemd-user.conf.5
@ -321,6 +323,7 @@ man/systemd-tmpfiles-setup.service.8: man/systemd-tmpfiles.8
man/systemd-udevd-control.socket.8: man/systemd-udevd.service.8
man/systemd-udevd-kernel.socket.8: man/systemd-udevd.service.8
man/systemd-udevd.8: man/systemd-udevd.service.8
man/systemd-update-done.8: man/systemd-update-done.service.8
man/systemd-update-utmp-runlevel.service.8: man/systemd-update-utmp.service.8
man/systemd-update-utmp.8: man/systemd-update-utmp.service.8
man/systemd-user.conf.5: man/systemd-system.conf.5
@ -627,6 +630,9 @@ man/systemd-udevd-kernel.socket.html: man/systemd-udevd.service.html
man/systemd-udevd.html: man/systemd-udevd.service.html
$(html-alias)
man/systemd-update-done.html: man/systemd-update-done.service.html
$(html-alias)
man/systemd-update-utmp-runlevel.service.html: man/systemd-update-utmp.service.html
$(html-alias)
@ -1633,6 +1639,7 @@ EXTRA_DIST += \
man/systemd-tmpfiles.xml \
man/systemd-tty-ask-password-agent.xml \
man/systemd-udevd.service.xml \
man/systemd-update-done.service.xml \
man/systemd-update-utmp.service.xml \
man/systemd-user-sessions.service.xml \
man/systemd-vconsole-setup.service.xml \

101
man/systemd-update-done.service.xml Normal file
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@ -0,0 +1,101 @@
<?xml version="1.0"?>
<!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
This file is part of systemd.
Copyright 2014 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
<refentry id="systemd-update-done.service">
<refentryinfo>
<title>systemd-update-done.service</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Lennart</firstname>
<surname>Poettering</surname>
<email>lennart@poettering.net</email>
</author>
</authorgroup>
</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 requires 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><refentrytitle>touch</refentrytitle><manvolnum>1</manvolnum></citerefentry>
on it.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>touch</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>

2
units/systemd-update-done.service.in
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@ -7,7 +7,7 @@
[Unit]
Description=Update is Completed
Documentation=man:sysusers.d(5) man:systemd-sysusers(8)
Documentation=man:systemd-update-done.service(8)
DefaultDependencies=no
Conflicts=shutdown.target
After=systemd-readahead-collect.service systemd-readahead-replay.service local-fs.target