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systemd-stable/man/systemd-rfkill.service.xml
Lennart Poettering d35c1bb1f4 rfkill: rework and make it listen on /dev/rfkill
With this rework we introduce systemd-rfkill.service as singleton that
is activated via systemd-rfkill.socket that listens on /dev/rfkill. That
way, we get notified each time a new rfkill device shows up or changes
state, in which case we restore and save its current setting to disk.

This is nicer than the previous logic, as this means we save/restore
state even of rfkill devices that are around only intermittently, and
save/restore the state even if the system is shutdown abruptly instead
of cleanly.

This implements what I suggested in #1019 and obsoletes it.
2015-10-01 16:21:09 +02:00

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XML

<?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 2013 Lennart Poettering
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under the terms of the GNU Lesser General Public License as published by
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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-rfkill.service" conditional='ENABLE_RFKILL'>
<refentryinfo>
<title>systemd-rfkill.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-rfkill.service</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-rfkill.service</refname>
<refname>systemd-rfkill.socket</refname>
<refname>systemd-rfkill</refname>
<refpurpose>Load and save the RF kill switch state at boot and change</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>systemd-rfkill.service</filename></para>
<para><filename>systemd-rfkill.socket</filename></para>
<para><filename>/usr/lib/systemd/systemd-rfkill</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><filename>systemd-rfkill.service</filename> is a service
that restores the RF kill switch state at early boot and saves it
on each change. On disk, the RF kill switch state is stored in
<filename>/var/lib/systemd/rfkill/</filename>.</para>
</refsect1>
<refsect1>
<title>Kernel Command Line</title>
<para><filename>systemd-rfkill</filename> understands the
following kernel command line parameter:</para>
<variablelist class='kernel-commandline-options'>
<varlistentry>
<term><varname>systemd.restore_state=</varname></term>
<listitem><para>Takes a boolean argument. Defaults to
<literal>1</literal>. If <literal>0</literal>, does not
restore the rfkill settings on boot. However, settings will
still be stored on shutdown. </para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>