-<?xml version='1.0'?>
-<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
+<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-<refentry id="systemd-udevd.service">
+<!--
+ SPDX-License-Identifier: LGPL-2.1+
+
+ This file is part of systemd.
+
+ Copyright 2010-2013 Kay Sievers
+
+ 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-udevd.service"
+ xmlns:xi="http://www.w3.org/2001/XInclude">
+
<refentryinfo>
<title>systemd-udevd.service</title>
<productname>systemd</productname>
<refmeta>
<refentrytitle>systemd-udevd.service</refentrytitle>
<manvolnum>8</manvolnum>
- <refmiscinfo class="version"></refmiscinfo>
</refmeta>
<refnamediv>
<arg><option>--debug</option></arg>
<arg><option>--children-max=</option></arg>
<arg><option>--exec-delay=</option></arg>
+ <arg><option>--event-timeout=</option></arg>
<arg><option>--resolve-names=early|late|never</option></arg>
<arg><option>--version</option></arg>
<arg><option>--help</option></arg>
<refsect1><title>Description</title>
<para><command>systemd-udevd</command> listens to kernel uevents.
- For every event, systemd-udevd executes matching instructions
- specified in udev rules. See <citerefentry>
- <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
- </citerefentry>.</para>
- <para>The behavior of the running daemon can be changed with
- <command>udevadm control</command>.</para>
+ For every event, systemd-udevd executes matching instructions
+ specified in udev rules. See <citerefentry>
+ <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
+ </citerefentry>.</para>
+
+ <para>The behavior of the daemon can be configured using
+ <citerefentry><refentrytitle>udev.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ its command line options, environment variables, and on the kernel
+ command line, or changed dynamically with <command>udevadm
+ control</command>.
+ </para>
</refsect1>
<refsect1><title>Options</title>
<para>Detach and run in the background.</para>
</listitem>
</varlistentry>
+
<varlistentry>
<term><option>--debug</option></term>
<listitem>
- <para>Print debug messages to STDERR.</para>
+ <para>Print debug messages to standard error.</para>
</listitem>
</varlistentry>
+
<varlistentry>
<term><option>--children-max=</option></term>
<listitem>
<para>Limit the number of events executed in parallel.</para>
</listitem>
</varlistentry>
+
<varlistentry>
<term><option>--exec-delay=</option></term>
<listitem>
- <para>Delay the execution of RUN instruction by the given
- number of seconds. This option might be useful when
- debugging system crashes during coldplug caused by loading
- non-working kernel modules.</para>
+ <para>Delay the execution of <varname>RUN</varname>
+ instructions by the given number of seconds. This option
+ might be useful when debugging system crashes during
+ coldplug caused by loading non-working kernel
+ modules.</para>
</listitem>
</varlistentry>
+
<varlistentry>
- <term><option>--resolve-names=</option></term>
+ <term><option>--event-timeout=</option></term>
<listitem>
- <para>Specify when systemd-udevd should resolve names of users and groups.
- When set to <option>early</option> (the default) names will be
- resolved when the rules are parsed. When set to
- <option>late</option> names will be resolved for every event.
- When set to <option>never</option> names will never be resolved
- and all devices will be owned by root.</para>
+ <para>Set the number of seconds to wait for events to finish. After
+ this time, the event will be terminated. The default is 180 seconds.</para>
</listitem>
</varlistentry>
+
<varlistentry>
- <term><option>--version</option></term>
+ <term><option>--resolve-names=</option></term>
<listitem>
- <para>Print version number.</para>
+ <para>Specify when systemd-udevd should resolve names of users and groups.
+ When set to <option>early</option> (the default), names will be
+ resolved when the rules are parsed. When set to
+ <option>late</option>, names will be resolved for every event.
+ When set to <option>never</option>, names will never be resolved
+ and all devices will be owned by root.</para>
</listitem>
</varlistentry>
+
<varlistentry>
<term><option>--help</option></term>
- <listitem>
- <para>Print help text.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
- <refsect1><title>Environment</title>
- <variablelist class='environment-variables'>
- <varlistentry>
- <term><varname>$UDEV_LOG=</varname></term>
- <listitem>
- <para>Set the logging priority.</para>
- </listitem>
+ <xi:include href="standard-options.xml" xpointer="help-text" />
</varlistentry>
+ <xi:include href="standard-options.xml" xpointer="version" />
</variablelist>
- </refsect1>
+ </refsect1>
<refsect1><title>Kernel command line</title>
<variablelist class='kernel-commandline-options'>
<para>Parameters starting with "rd." will be read when
<command>systemd-udevd</command> is used in an initrd.</para>
<varlistentry>
- <term><varname>udev.log-priority=</varname></term>
- <term><varname>rd.udev.log-priority=</varname></term>
+ <term><varname>udev.log_priority=</varname></term>
+ <term><varname>rd.udev.log_priority=</varname></term>
<listitem>
- <para>Set the logging priority.</para>
+ <para>Set the log level.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><varname>udev.children-max=</varname></term>
- <term><varname>rd.udev.children-max=</varname></term>
+ <term><varname>udev.children_max=</varname></term>
+ <term><varname>rd.udev.children_max=</varname></term>
<listitem>
<para>Limit the number of events executed in parallel.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><varname>udev.exec-delay=</varname></term>
- <term><varname>rd.udev.exec-delay=</varname></term>
+ <term><varname>udev.exec_delay=</varname></term>
+ <term><varname>rd.udev.exec_delay=</varname></term>
<listitem>
- <para>Delay the execution of RUN instruction by the given
+ <para>Delay the execution of <varname>RUN</varname> instructions by the given
number of seconds. This option might be useful when
debugging system crashes during coldplug caused by loading
non-working kernel modules.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>udev.event_timeout=</varname></term>
+ <term><varname>rd.udev.event_timeout=</varname></term>
+ <listitem>
+ <para>Wait for events to finish up to the given number
+ of seconds. This option might be useful if events are
+ terminated due to kernel drivers taking too long to initialize.</para>
+ </listitem>
+ </varlistentry>
<varlistentry>
<term><varname>net.ifnames=</varname></term>
<listitem>
in kernel-command-line.xml -->
</refsect1>
- <refsect1><title>Configuration file</title>
- <para>udev expects its main configuration file at <filename>/etc/udev/udev.conf</filename>.
- It consists of a set of variables allowing the user to override default udev values. All
- empty lines or lines beginning with '#' are ignored. The following variables can be
- set:</para>
- <variablelist>
- <varlistentry>
- <term><varname>udev_log</varname></term>
- <listitem>
- <para>The logging priority. Valid values are the numerical syslog priorities
- or their textual representations: <option>err</option>, <option>info</option>
- and <option>debug</option>.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
<refsect1>
<title>See Also</title>
- <para><citerefentry>
- <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
- </citerefentry>, <citerefentry>
- <refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum>
- </citerefentry></para>
+ <para>
+ <citerefentry><refentrytitle>udev.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
</refsect1>
</refentry>
projects / thirdparty / systemd.git / blobdiff