Adding upstream version 241.upstream/241upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 206 insertions, 0 deletions

diff --git a/man/systemd-udevd.service.xml b/man/systemd-udevd.service.xml
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+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+  SPDX-License-Identifier: LGPL-2.1+
+-->
+
+<refentry id="systemd-udevd.service"
+          xmlns:xi="http://www.w3.org/2001/XInclude">
+
+  <refentryinfo>
+    <title>systemd-udevd.service</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>systemd-udevd.service</refentrytitle>
+    <manvolnum>8</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>systemd-udevd.service</refname>
+    <refname>systemd-udevd-control.socket</refname>
+    <refname>systemd-udevd-kernel.socket</refname>
+    <refname>systemd-udevd</refname>
+    <refpurpose>Device event managing daemon</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <para><filename>systemd-udevd.service</filename></para>
+    <para><filename>systemd-udevd-control.socket</filename></para>
+    <para><filename>systemd-udevd-kernel.socket</filename></para>
+
+    <cmdsynopsis>
+      <command>/usr/lib/systemd/systemd-udevd</command>
+      <arg><option>--daemon</option></arg>
+      <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>
+    </cmdsynopsis>
+
+  </refsynopsisdiv>
+
+  <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 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>
+    <variablelist>
+      <varlistentry>
+        <term><option>-d</option></term>
+        <term><option>--daemon</option></term>
+        <listitem>
+          <para>Detach and run in the background.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>-D</option></term>
+        <term><option>--debug</option></term>
+        <listitem>
+          <para>Print debug messages to standard error.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>-c=</option></term>
+        <term><option>--children-max=</option></term>
+        <listitem>
+          <para>Limit the number of events executed in parallel.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>-e=</option></term>
+        <term><option>--exec-delay=</option></term>
+        <listitem>
+          <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>-t=</option></term>
+        <term><option>--event-timeout=</option></term>
+        <listitem>
+          <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>-N=</option></term>
+        <term><option>--resolve-names=</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>
+        </listitem>
+      </varlistentry>
+
+      <xi:include href="standard-options.xml" xpointer="help" />
+      <xi:include href="standard-options.xml" xpointer="version" />
+    </variablelist>
+  </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>
+        <listitem>
+          <para>Set the log level.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <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>
+        <listitem>
+          <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>
+          <para>Network interfaces are renamed to give them predictable names
+          when possible. It is enabled by default; specifying 0 disables it.</para>
+        </listitem>
+      </varlistentry>
+      <varlistentry>
+        <term><varname>net.naming-scheme=</varname></term>
+        <listitem>
+          <para>Network interfaces are renamed to give them predictable names when possible (unless
+          <varname>net.ifnames=0</varname> is specified, see above). The names are derived from various
+          device metadata fields. Newer versions of <filename>systemd-udevd.service</filename> take more of
+          these fields into account, improving (and thus possibly changing) the names used for the same
+          devices. With this kernel command line option it is possible to pick a specific version of this
+          algorithm. It expects a naming scheme identifier as argument. Currently the following identifiers
+          are known: <literal>v238</literal>, <literal>v239</literal>, <literal>v240</literal> which each
+          implement the naming scheme that was the default in the indicated systemd version. In addition,
+          <literal>latest</literal> may be used to designate the latest scheme known (to this particular
+          version of <filename>systemd-udevd.service</filename>).</para>
+
+          <para>Note that selecting a specific scheme is not sufficient to fully stabilize interface naming:
+          the naming is generally derived from driver attributes exposed by the kernel. As the kernel is
+          updated, previously missing attributes <filename>systemd-udevd.service</filename> is checking might
+          appear, which affects older name derivation algorithms, too.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+    <!-- when adding entries here, consider also adding them
+         in kernel-command-line.xml -->
+ </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <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>