mirror of
https://git.linuxfromscratch.org/lfs.git
synced 2025-01-19 05:27:39 +00:00
3685bb6f51
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@7489 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
259 lines
8.8 KiB
XML
259 lines
8.8 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
|
|
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
|
|
<!ENTITY % general-entities SYSTEM "../general.ent">
|
|
%general-entities;
|
|
]>
|
|
|
|
<sect1 id="ch-system-udev" role="wrap">
|
|
<?dbhtml filename="udev.html"?>
|
|
|
|
<title>Udev-&udev-version;</title>
|
|
|
|
<indexterm zone="ch-system-udev">
|
|
<primary sortas="a-Udev">Udev</primary>
|
|
</indexterm>
|
|
|
|
<sect2 role="package">
|
|
<title/>
|
|
|
|
<para>The Udev package contains programs for dynamic creation of device
|
|
nodes.</para>
|
|
|
|
<segmentedlist>
|
|
<segtitle>&buildtime;</segtitle>
|
|
<segtitle>&diskspace;</segtitle>
|
|
|
|
<seglistitem>
|
|
<seg>0.1 SBU</seg>
|
|
<seg>3.8 MB</seg>
|
|
</seglistitem>
|
|
</segmentedlist>
|
|
|
|
<segmentedlist>
|
|
<segtitle>&dependencies;</segtitle>
|
|
|
|
<seglistitem>
|
|
<seg>Coreutils, GCC, Make, and Perl</seg>
|
|
</seglistitem>
|
|
</segmentedlist>
|
|
|
|
</sect2>
|
|
|
|
<sect2 role="installation">
|
|
<title>Installation of Udev</title>
|
|
|
|
<para>Compile the package:</para>
|
|
|
|
<screen><userinput>make EXTRAS=extras/run_directory</userinput></screen>
|
|
|
|
<variablelist>
|
|
<title>The meaning of the make option:</title>
|
|
|
|
<varlistentry>
|
|
<term><parameter>EXTRAS=extras/run_directory</parameter></term>
|
|
<listitem>
|
|
<para>This builds the <command>udev_run_devd</command> and
|
|
<command>udev_run_hotplugd</command> binaries, which are required
|
|
for correct handling of hotpluggable devices.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
<para>To test the results, issue:
|
|
<userinput>make test</userinput>.</para>
|
|
|
|
<para>Install the package:</para>
|
|
|
|
<screen><userinput>make DESTDIR=/ EXTRAS=extras/run_directory install</userinput></screen>
|
|
|
|
<variablelist>
|
|
<title>The meaning of the make parameter:</title>
|
|
|
|
<varlistentry>
|
|
<term><parameter>DESTDIR=/</parameter></term>
|
|
<listitem>
|
|
<para>This prevents the Udev build process from killing any
|
|
<command>udevd</command> processes that may be running on the
|
|
host system.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
<para>Udev's configuration is far from ideal by default, so install
|
|
the configuration files here:</para>
|
|
|
|
<screen><userinput>cp -v ../&udev-config-file; /etc/udev/rules.d/25-lfs.rules</userinput></screen>
|
|
|
|
<para>Install the documentation that explains how to create Udev rules:</para>
|
|
|
|
<screen><userinput>install -m644 -D -v docs/writing_udev_rules/index.html /usr/share/doc/udev-&udev-version;/index.html</userinput></screen>
|
|
|
|
<!-- Not for the LiveCD -->
|
|
<!-- Edit Me -->
|
|
<para>Run the <command>udevstart</command> program to create our full
|
|
complement of device nodes.</para>
|
|
|
|
<screen><userinput>/sbin/udevstart</userinput></screen>
|
|
|
|
</sect2>
|
|
|
|
<sect2 id="contents-udev" role="content">
|
|
<title>Contents of Udev</title>
|
|
|
|
<segmentedlist>
|
|
<segtitle>Installed programs</segtitle>
|
|
<segtitle>Installed directory</segtitle>
|
|
|
|
<seglistitem>
|
|
<seg>udev, udev_run_devd, udev_run_hotplugd, udevcontrol, udevd,
|
|
udevinfo, udevmonitor, udevsend, udevstart, and udevtest</seg>
|
|
<seg>/etc/udev</seg>
|
|
</seglistitem>
|
|
</segmentedlist>
|
|
|
|
<variablelist>
|
|
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
|
<?dbfo list-presentation="list"?>
|
|
<?dbhtml list-presentation="table"?>
|
|
|
|
<varlistentry id="udev">
|
|
<term><command>udev</command></term>
|
|
<listitem>
|
|
<para>Creates device nodes in <filename class="directory">/dev</filename>
|
|
or renames network interfaces (not in LFS) in response to hotplug
|
|
events</para>
|
|
<indexterm zone="ch-system-udev udev">
|
|
<primary sortas="b-udev">udev</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udev_run_devd">
|
|
<term><command>udev_run_devd</command></term>
|
|
<listitem>
|
|
<para>Executes programs and scripts in the <filename
|
|
class="directory">/etc/dev.d/</filename> directory in response to
|
|
hotplug events</para>
|
|
<indexterm zone="ch-system-udev udev_run_devd">
|
|
<primary sortas="b-udev_run_devd">udev_run_devd</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udev_run_hotplugd">
|
|
<term><command>udev_run_hotplugd</command></term>
|
|
<listitem>
|
|
<para>Executes programs and scripts in the <filename
|
|
class="directory">/etc/hotplug.d/</filename> directory in response
|
|
to hotplug events</para>
|
|
<indexterm zone="ch-system-udev udev_run_hotplugd">
|
|
<primary sortas="b-udev_run_hotplugd">udev_run_hotplugd</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udevcontrol">
|
|
<term><command>udevcontrol</command></term>
|
|
<listitem>
|
|
<para>Configures a number of options for the running
|
|
<command>udevd</command> daemon, such as the log level.</para>
|
|
<indexterm zone="ch-system-udev udevcontrol">
|
|
<primary sortas="b-udevcontrol">udevcontrol</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udevd">
|
|
<term><command>udevd</command></term>
|
|
<listitem>
|
|
<para>A daemon that reorders hotplug events before submitting them to
|
|
<command>udev</command>, thus avoiding various race conditions</para>
|
|
<indexterm zone="ch-system-udev udevd">
|
|
<primary sortas="b-udevd">udevd</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udevinfo">
|
|
<term><command>udevinfo</command></term>
|
|
<listitem>
|
|
<para>Allows users to query the <command>udev</command> database for
|
|
information on any device currently present on the system; it also
|
|
provides a way to query any device in the <systemitem
|
|
class="filesystem">sysfs</systemitem> tree to help create udev
|
|
rules</para>
|
|
<indexterm zone="ch-system-udev udevinfo">
|
|
<primary sortas="b-udevinfo">udevinfo</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udevmonitor">
|
|
<term><command>udevmonitor</command></term>
|
|
<listitem>
|
|
<para>Prints the event received from the kernel and the event which
|
|
<command>udev</command> sends out after rule processing</para>
|
|
<indexterm zone="ch-system-udev udevmonitor">
|
|
<primary sortas="b-udevmonitor">udevmonitor</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udevsend">
|
|
<term><command>udevsend</command></term>
|
|
<listitem>
|
|
<para>Delivers hotplug events to <command>udevd</command></para>
|
|
<indexterm zone="ch-system-udev udevsend">
|
|
<primary sortas="b-udevsend">udevsend</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udevstart">
|
|
<term><command>udevstart</command></term>
|
|
<listitem>
|
|
<para>Creates device nodes in <filename class="directory">/dev</filename>
|
|
that correspond to drivers compiled directly into the kernel; it
|
|
performs that task by simulating hotplug events presumably dropped by
|
|
the kernel before invocation of this program (e.g., because the root
|
|
filesystem has not been mounted) and submitting such synthetic hotplug
|
|
events to <command>udev</command></para>
|
|
<indexterm zone="ch-system-udev udevstart">
|
|
<primary sortas="b-udevstart">udevstart</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="udevtest">
|
|
<term><command>udevtest</command></term>
|
|
<listitem>
|
|
<para>Simulates a <command>udev</command> run for the given device,
|
|
and prints out the name of the node the real <command>udev</command>
|
|
would have created or (not in LFS) the name of the renamed network
|
|
interface</para>
|
|
<indexterm zone="ch-system-udev udevtest">
|
|
<primary sortas="b-udevtest">udevtest</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="etc-udev">
|
|
<term><filename class="directory">/etc/udev</filename></term>
|
|
<listitem>
|
|
<para>Contains <command>udev</command> configuation files,
|
|
device permissions, and rules for device naming</para>
|
|
<indexterm zone="ch-system-udev etc-udev">
|
|
<primary sortas="e-/etc/udev">/etc/udev</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
</sect2>
|
|
|
|
</sect1>
|