source: BOOK/final-system/common/udev.xml@ 82fedc4

clfs-1.2 clfs-2.1 clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since 82fedc4 was 6aad380, checked in by Jim Gifford <clfs@…>, 19 years ago

r677@server (orig r675): manuel | 2005-11-10 03:13:57 -0800
Including patches.ent from general.ent

  • Property mode set to 100644
File size: 7.6 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3 "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-udev" role="wrap">
9 <?dbhtml filename="udev.html"?>
10
11 <title>Udev-&udev-version;</title>
12
13 <indexterm zone="ch-system-udev">
14 <primary sortas="a-Udev">Udev</primary>
15 </indexterm>
16
17 <sect2 role="package">
18 <title/>
19
20 <para>The Udev package contains programs for dynamic creation of device
21 nodes.</para>
22
23 <segmentedlist>
24 <segtitle>&dependencies;</segtitle>
25
26 <seglistitem>
27 <seg>Coreutils and Make</seg>
28 </seglistitem>
29 </segmentedlist>
30
31 </sect2>
32
33 <sect2 role="installation">
34 <title>Installation of Udev</title>
35
36 <para os="c">Compile the package:</para>
37
38<screen><userinput>make EXTRAS="extras/firmware extras/run_directory"</userinput></screen>
39
40 <variablelist os="d">
41 <title>The meaning of the make parameter:</title>
42
43 <varlistentry>
44 <term><parameter>EXTRAS="extras/firmware extras/run_directory"</parameter></term>
45 <listitem>
46 <para>This builds the <command>udev_run_devd</command> and
47 <command>udev_run_hotplugd</command> binaries, which are required for
48 correct handling of hotpluggable devices.</para>
49 </listitem>
50 </varlistentry>
51
52 </variablelist>
53
54 <para os="e">To test the results, issue:
55 <userinput>make test</userinput>.</para>
56
57 <para os="f">Install the package:</para>
58
59<screen os="g"><userinput>make DESTDIR=/ EXTRAS="extras/firmware extras/run_directory" install</userinput></screen>
60
61 <variablelist os="g1">
62 <title>The meaning of the make parameter:</title>
63
64 <varlistentry>
65 <term><parameter>DESTDIR=/</parameter></term>
66 <listitem>
67 <para>This prevents the Udev build process from killing any
68 <command>udevd</command> processes that may be running on the
69 system.</para>
70 </listitem>
71 </varlistentry>
72
73 </variablelist>
74 <para os="h">Udev's configuration is far from ideal by default, so install
75 the configuration files here:</para>
76
77<screen os="i"><userinput>cp ../&udev-config-file; /etc/udev/rules.d/25-lfs.rules</userinput></screen>
78
79 <para os="a">Install the documentation that explains how to create
80 Udev rules:</para>
81
82<screen os="b"><userinput>install -m644 -D docs/writing_udev_rules/index.html /usr/share/doc/udev-&udev-version;/index.html</userinput></screen>
83
84 <para os="j">Run the <command>udevstart</command> program to create our full
85 complement of device nodes.</para>
86
87<screen os="k"><userinput>/sbin/udevstart</userinput></screen>
88
89 </sect2>
90
91 <sect2 id="contents-udev" role="content">
92 <title>Contents of Udev</title>
93
94 <segmentedlist>
95 <segtitle>Installed programs</segtitle>
96 <segtitle>Installed directory</segtitle>
97
98 <seglistitem>
99 <seg>udev, udevcontrol, udevd, udevinfo, udevmonitor, udevsend,
100 udevstart and udevtest</seg>
101 <seg>/etc/udev</seg>
102 </seglistitem>
103 </segmentedlist>
104
105 <variablelist>
106 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
107 <?dbfo list-presentation="list"?>
108 <?dbhtml list-presentation="table"?>
109
110 <varlistentry id="udev">
111 <term><command>udev</command></term>
112 <listitem>
113 <para>Creates device nodes in <filename
114 class="directory">/dev</filename> or renames network interfaces (not
115 in LFS) in response to hotplug events</para>
116 <indexterm zone="ch-system-udev udev">
117 <primary sortas="b-udev">udev</primary>
118 </indexterm>
119 </listitem>
120 </varlistentry>
121
122 <varlistentry id="udevcontrol">
123 <term><command>udevcontrol</command></term>
124 <listitem>
125 <para>Configures a number of options for the running
126 <command>udevd</command> daemon, such as the log level.</para>
127 <indexterm zone="ch-system-udev udevcontrol">
128 <primary sortas="b-udevcontrol">udevcontrol</primary>
129 </indexterm>
130 </listitem>
131 </varlistentry>
132
133 <varlistentry id="udevd">
134 <term><command>udevd</command></term>
135 <listitem>
136 <para>A daemon that reorders hotplug events before submitting them to
137 <command>udev</command>,
138 thus avoiding various race conditions</para>
139 <indexterm zone="ch-system-udev udevd">
140 <primary sortas="b-udevd">udevd</primary>
141 </indexterm>
142 </listitem>
143 </varlistentry>
144
145 <varlistentry id="udevinfo">
146 <term><command>udevinfo</command></term>
147 <listitem>
148 <para>Allows users to query the <command>udev</command> database for
149 information on any device currently present on the system; it also
150 provides a way to query any device in the <systemitem
151 class="filesystem">sysfs</systemitem> tree to help create udev
152 rules</para>
153 <indexterm zone="ch-system-udev udevinfo">
154 <primary sortas="b-udevinfo">udevinfo</primary>
155 </indexterm>
156 </listitem>
157 </varlistentry>
158
159 <varlistentry id="udevmonitor">
160 <term><command>udevmonitor</command></term>
161 <listitem>
162 <para>Prints the event received from the kernel and the event which
163 <command>udev</command> sends out after rule processing</para>
164 <indexterm zone="ch-system-udev udevmonitor">
165 <primary sortas="b-udevmonitor">udevmonitor</primary>
166 </indexterm>
167 </listitem>
168 </varlistentry>
169
170 <varlistentry id="udevsend">
171 <term><command>udevsend</command></term>
172 <listitem>
173 <para>Delivers hotplug events to <command>udevd</command></para>
174 <indexterm zone="ch-system-udev udevsend">
175 <primary sortas="b-udevsend">udevsend</primary>
176 </indexterm>
177 </listitem>
178 </varlistentry>
179
180 <varlistentry id="udevstart">
181 <term><command>udevstart</command></term>
182 <listitem>
183 <para>Creates device nodes in <filename class="directory">/dev</filename>
184 that correspond to drivers compiled directly into the kernel; it
185 performs that task by simulating hotplug events presumably dropped by
186 the kernel before invocation of this program (e.g., because the root
187 filesystem has not been mounted) and submitting such synthetic hotplug
188 events to <command>udev</command></para>
189 <indexterm zone="ch-system-udev udevstart">
190 <primary sortas="b-udevstart">udevstart</primary>
191 </indexterm>
192 </listitem>
193 </varlistentry>
194
195 <varlistentry id="udevtest">
196 <term><command>udevtest</command></term>
197 <listitem>
198 <para>Simulates a <command>udev</command> run for the given device,
199 and prints out the name of the node the real <command>udev</command>
200 would have created or (not in LFS) the name of the renamed network
201 interface</para>
202 <indexterm zone="ch-system-udev udevtest">
203 <primary sortas="b-udevtest">udevtest</primary>
204 </indexterm>
205 </listitem>
206 </varlistentry>
207
208 <varlistentry id="etc-udev">
209 <term><filename class="directory">/etc/udev</filename></term>
210 <listitem>
211 <para>Contains <command>udev</command> configuation files,
212 device permissions, and rules for device naming</para>
213 <indexterm zone="ch-system-udev etc-udev">
214 <primary sortas="e-/etc/udev">/etc/udev</primary>
215 </indexterm>
216 </listitem>
217 </varlistentry>
218
219 </variablelist>
220
221 </sect2>
222
223</sect1>
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