1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" |
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3 | "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [ |
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
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5 | %general-entities; |
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6 | ]> |
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7 | |
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8 | <sect1 id="ch-system-udev" role="wrap"> |
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9 | <?dbhtml filename="udev.html"?> |
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10 | |
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11 | <title>Udev-&udev-version;</title> |
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12 | |
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13 | <indexterm zone="ch-system-udev"> |
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14 | <primary sortas="a-Udev">Udev</primary> |
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15 | </indexterm> |
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16 | |
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17 | <sect2 role="package"> |
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18 | <title/> |
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19 | |
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20 | <para>The Udev package contains programs for dynamic creation of device |
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21 | nodes.</para> |
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22 | |
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23 | <segmentedlist> |
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24 | <segtitle>&dependencies;</segtitle> |
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25 | |
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26 | <seglistitem> |
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27 | <seg>Coreutils, GCC, Make, Perl, and Tree</seg> |
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28 | </seglistitem> |
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29 | </segmentedlist> |
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30 | |
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31 | </sect2> |
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32 | |
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33 | <sect2 role="installation"> |
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34 | <title>Installation of Udev</title> |
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35 | |
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36 | <para os="a">Compile the package:</para> |
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37 | |
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38 | <screen os="b"><userinput>make EXTRAS="extras/firmware extras/run_directory"</userinput></screen> |
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39 | |
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40 | <variablelist os="c"> |
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41 | <title>The meaning of the make parameter:</title> |
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42 | |
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43 | <varlistentry> |
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44 | <term><parameter>EXTRAS="extras/firmware extras/run_directory"</parameter></term> |
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45 | <listitem> |
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46 | <para>This builds the <command>udev_run_devd</command> and |
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47 | <command>udev_run_hotplugd</command> binaries, which are required for |
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48 | correct handling of hotpluggable devices.</para> |
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49 | </listitem> |
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50 | </varlistentry> |
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51 | |
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52 | </variablelist> |
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53 | |
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54 | <para os="d">If you want to run the testsuite, you need to change |
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55 | a hardcoded reference to the <command>test</command> |
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56 | program:</para> |
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57 | |
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58 | <para os="e"><userinput>sed -i 's@/usr/bin/test@/bin/test@' test/udev-test.pl</userinput></para> |
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59 | |
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60 | <para os="f">To test the results, issue: |
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61 | <userinput>make test</userinput>.</para> |
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62 | |
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63 | <para os="g">Install the package:</para> |
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64 | |
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65 | <screen os="h"><userinput>make DESTDIR=/ EXTRAS="extras/firmware extras/run_directory" install</userinput></screen> |
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66 | |
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67 | <variablelist os="i"> |
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68 | <title>The meaning of the make parameter:</title> |
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69 | |
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70 | <varlistentry> |
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71 | <term><parameter>DESTDIR=/</parameter></term> |
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72 | <listitem> |
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73 | <para>This prevents the Udev build process from killing any |
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74 | <command>udevd</command> processes that may be running on the |
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75 | system.</para> |
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76 | </listitem> |
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77 | </varlistentry> |
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78 | |
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79 | </variablelist> |
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80 | |
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81 | <para os="j">Udev's configuration is far from ideal by default, so install |
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82 | the configuration files here:</para> |
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83 | |
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84 | <screen os="k"><userinput>cp -v ../&udev-config-file; /etc/udev/rules.d/25-lfs.rules</userinput></screen> |
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85 | |
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86 | <para os="l">Install the documentation that explains how to create |
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87 | Udev rules:</para> |
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88 | |
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89 | <screen os="m"><userinput>install -v -m644 -D docs/writing_udev_rules/index.html /usr/share/doc/udev-&udev-version;/index.html</userinput></screen> |
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90 | |
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91 | <para os="n">Run the <command>udevstart</command> program to create our full |
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92 | complement of device nodes.</para> |
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93 | |
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94 | <screen os="o"><userinput>/sbin/udevstart</userinput></screen> |
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95 | |
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96 | </sect2> |
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97 | |
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98 | <sect2 id="contents-udev" role="content"> |
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99 | <title>Contents of Udev</title> |
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100 | |
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101 | <segmentedlist> |
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102 | <segtitle>Installed programs</segtitle> |
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103 | <segtitle>Installed directory</segtitle> |
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104 | |
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105 | <seglistitem> |
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106 | <seg>udev, udevcontrol, udevd, udevinfo, udevmonitor, udevsend, |
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107 | udevstart and udevtest</seg> |
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108 | <seg>/etc/udev</seg> |
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109 | </seglistitem> |
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110 | </segmentedlist> |
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111 | |
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112 | <variablelist> |
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113 | <bridgehead renderas="sect3">Short Descriptions</bridgehead> |
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114 | <?dbfo list-presentation="list"?> |
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115 | <?dbhtml list-presentation="table"?> |
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116 | |
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117 | <varlistentry id="udev"> |
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118 | <term><command>udev</command></term> |
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119 | <listitem> |
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120 | <para>Creates device nodes in <filename |
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121 | class="directory">/dev</filename> or renames network interfaces (not |
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122 | in LFS) in response to hotplug events</para> |
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123 | <indexterm zone="ch-system-udev udev"> |
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124 | <primary sortas="b-udev">udev</primary> |
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125 | </indexterm> |
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126 | </listitem> |
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127 | </varlistentry> |
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128 | |
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129 | <varlistentry id="udevcontrol"> |
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130 | <term><command>udevcontrol</command></term> |
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131 | <listitem> |
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132 | <para>Configures a number of options for the running |
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133 | <command>udevd</command> daemon, such as the log level.</para> |
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134 | <indexterm zone="ch-system-udev udevcontrol"> |
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135 | <primary sortas="b-udevcontrol">udevcontrol</primary> |
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136 | </indexterm> |
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137 | </listitem> |
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138 | </varlistentry> |
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139 | |
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140 | <varlistentry id="udevd"> |
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141 | <term><command>udevd</command></term> |
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142 | <listitem> |
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143 | <para>A daemon that reorders hotplug events before submitting them to |
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144 | <command>udev</command>, |
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145 | thus avoiding various race conditions</para> |
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146 | <indexterm zone="ch-system-udev udevd"> |
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147 | <primary sortas="b-udevd">udevd</primary> |
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148 | </indexterm> |
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149 | </listitem> |
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150 | </varlistentry> |
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151 | |
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152 | <varlistentry id="udevinfo"> |
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153 | <term><command>udevinfo</command></term> |
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154 | <listitem> |
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155 | <para>Allows users to query the <command>udev</command> database for |
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156 | information on any device currently present on the system; it also |
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157 | provides a way to query any device in the <systemitem |
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158 | class="filesystem">sysfs</systemitem> tree to help create udev |
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159 | rules</para> |
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160 | <indexterm zone="ch-system-udev udevinfo"> |
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161 | <primary sortas="b-udevinfo">udevinfo</primary> |
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162 | </indexterm> |
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163 | </listitem> |
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164 | </varlistentry> |
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165 | |
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166 | <varlistentry id="udevmonitor"> |
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167 | <term><command>udevmonitor</command></term> |
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168 | <listitem> |
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169 | <para>Prints the event received from the kernel and the event which |
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170 | <command>udev</command> sends out after rule processing</para> |
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171 | <indexterm zone="ch-system-udev udevmonitor"> |
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172 | <primary sortas="b-udevmonitor">udevmonitor</primary> |
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173 | </indexterm> |
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174 | </listitem> |
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175 | </varlistentry> |
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176 | |
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177 | <varlistentry id="udevsend"> |
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178 | <term><command>udevsend</command></term> |
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179 | <listitem> |
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180 | <para>Delivers hotplug events to <command>udevd</command></para> |
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181 | <indexterm zone="ch-system-udev udevsend"> |
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182 | <primary sortas="b-udevsend">udevsend</primary> |
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183 | </indexterm> |
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184 | </listitem> |
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185 | </varlistentry> |
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186 | |
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187 | <varlistentry id="udevstart"> |
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188 | <term><command>udevstart</command></term> |
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189 | <listitem> |
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190 | <para>Creates device nodes in <filename class="directory">/dev</filename> |
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191 | that correspond to drivers compiled directly into the kernel; it |
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192 | performs that task by simulating hotplug events presumably dropped by |
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193 | the kernel before invocation of this program (e.g., because the root |
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194 | filesystem has not been mounted) and submitting such synthetic hotplug |
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195 | events to <command>udev</command></para> |
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196 | <indexterm zone="ch-system-udev udevstart"> |
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197 | <primary sortas="b-udevstart">udevstart</primary> |
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198 | </indexterm> |
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199 | </listitem> |
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200 | </varlistentry> |
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201 | |
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202 | <varlistentry id="udevtest"> |
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203 | <term><command>udevtest</command></term> |
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204 | <listitem> |
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205 | <para>Simulates a <command>udev</command> run for the given device, |
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206 | and prints out the name of the node the real <command>udev</command> |
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207 | would have created or (not in LFS) the name of the renamed network |
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208 | interface</para> |
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209 | <indexterm zone="ch-system-udev udevtest"> |
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210 | <primary sortas="b-udevtest">udevtest</primary> |
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211 | </indexterm> |
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212 | </listitem> |
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213 | </varlistentry> |
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214 | |
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215 | <varlistentry id="etc-udev"> |
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216 | <term><filename class="directory">/etc/udev</filename></term> |
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217 | <listitem> |
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218 | <para>Contains <command>udev</command> configuation files, |
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219 | device permissions, and rules for device naming</para> |
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220 | <indexterm zone="ch-system-udev etc-udev"> |
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221 | <primary sortas="e-/etc/udev">/etc/udev</primary> |
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222 | </indexterm> |
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223 | </listitem> |
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224 | </varlistentry> |
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225 | |
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226 | </variablelist> |
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227 | |
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228 | </sect2> |
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229 | |
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230 | </sect1> |
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