1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
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3 | "http://www.oasis-open.org/docbook/xml/4.5/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 | </sect2> |
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24 | |
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25 | <sect2 role="installation"> |
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26 | <title>Installation of Udev</title> |
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27 | |
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28 | <para os="a">Compile the package:</para> |
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29 | |
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30 | <screen os="b"><userinput>make CROSS_COMPILE="${CLFS_TARGET}-" CC="${CC}" LD="${CC}" \ |
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31 | EXTRAS="extras/floppy extras/cdrom_id extras/firmware \ |
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32 | extras/scsi_id extras/volume_id extras/ata_id extras/usb_id \ |
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33 | extras/edd_id extras/dasd_id extras/path_id"</userinput></screen> |
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34 | |
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35 | <variablelist os="c"> |
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36 | <title>The meaning of the make parameter:</title> |
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37 | |
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38 | <varlistentry> |
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39 | <term><parameter>EXTRAS="extras/floppy extras/cdrom_id extras/firmware |
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40 | extras/scsi_id extras/volume_id extras/ata_id extras/usb_id extras/edd_id |
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41 | extras/dasd_id extras/path_id"</parameter></term> |
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42 | <listitem> |
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43 | <para>This builds the helper applications that are used with |
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44 | udev. The helper programs assist in correct handling of devices.</para> |
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45 | </listitem> |
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46 | </varlistentry> |
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47 | |
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48 | </variablelist> |
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49 | |
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50 | <para os="c">Install the package:</para> |
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51 | |
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52 | <screen os="d"><userinput>make DESTDIR="${CLFS}" \ |
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53 | EXTRAS="extras/floppy extras/cdrom_id extras/firmware \ |
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54 | extras/scsi_id extras/volume_id extras/ata_id extras/usb_id \ |
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55 | extras/edd_id extras/dasd_id extras/path_id" install</userinput></screen> |
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56 | |
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57 | <para os="e">Install a necessary helper script.</para> |
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58 | |
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59 | <screen os="f"><userinput>install -v extras/eventrecorder.sh ${CLFS}/lib/udev</userinput></screen> |
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60 | |
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61 | <para os="g">Install the documentation that explains how to create |
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62 | Udev rules:</para> |
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63 | |
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64 | <screen os="h"><userinput>install -v -m644 -D docs/writing_udev_rules/index.html \ |
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65 | ${CLFS}/usr/share/doc/udev-&udev-version;/index.html</userinput></screen> |
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66 | |
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67 | <para os="i">Create a directory for storing firmware that can be |
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68 | loaded by <command>udev</command>:</para> |
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69 | |
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70 | <screen os="j"><userinput>install -dv ${CLFS}/lib/firmware</userinput></screen> |
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71 | |
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72 | <para os="k">Finally, remove the rules installed by Udev as we will be |
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73 | installing custom Udev rules later:</para> |
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74 | |
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75 | <screen os="l"><userinput>rm -v ${CLFS}/etc/udev/rules.d/*</userinput></screen> |
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76 | |
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77 | </sect2> |
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78 | |
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79 | <sect2 id="contents-udev" role="content"> |
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80 | <title>Contents of Udev</title> |
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81 | |
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82 | <segmentedlist> |
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83 | <segtitle>Installed programs</segtitle> |
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84 | <segtitle>Installed directory</segtitle> |
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85 | |
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86 | <seglistitem> |
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87 | <seg>udevcontrol, udevd, udevinfo, udevmonitor, udevsend, |
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88 | udevtest, and udevtrigger</seg> |
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89 | <seg>/etc/udev</seg> |
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90 | </seglistitem> |
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91 | </segmentedlist> |
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92 | |
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93 | <variablelist> |
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94 | <bridgehead renderas="sect3">Short Descriptions</bridgehead> |
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95 | <?dbfo list-presentation="list"?> |
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96 | <?dbhtml list-presentation="table"?> |
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97 | |
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98 | <varlistentry id="udevcontrol"> |
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99 | <term><command>udevcontrol</command></term> |
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100 | <listitem> |
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101 | <para>Configures a number of options for the running |
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102 | <command>udevd</command> daemon, such as the log level.</para> |
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103 | <indexterm zone="ch-system-udev udevcontrol"> |
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104 | <primary sortas="b-udevcontrol">udevcontrol</primary> |
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105 | </indexterm> |
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106 | </listitem> |
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107 | </varlistentry> |
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108 | |
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109 | <varlistentry id="udevd"> |
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110 | <term><command>udevd</command></term> |
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111 | <listitem> |
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112 | <para>A daemon that reorders hotplug events before submitting them to |
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113 | <command>udev</command>, |
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114 | thus avoiding various race conditions</para> |
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115 | <indexterm zone="ch-system-udev udevd"> |
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116 | <primary sortas="b-udevd">udevd</primary> |
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117 | </indexterm> |
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118 | </listitem> |
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119 | </varlistentry> |
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120 | |
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121 | <varlistentry id="udevinfo"> |
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122 | <term><command>udevinfo</command></term> |
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123 | <listitem> |
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124 | <para>Allows users to query the <command>udev</command> database for |
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125 | information on any device currently present on the system; it also |
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126 | provides a way to query any device in the <systemitem |
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127 | class="filesystem">sysfs</systemitem> tree to help create udev |
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128 | rules</para> |
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129 | <indexterm zone="ch-system-udev udevinfo"> |
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130 | <primary sortas="b-udevinfo">udevinfo</primary> |
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131 | </indexterm> |
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132 | </listitem> |
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133 | </varlistentry> |
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134 | |
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135 | <varlistentry id="udevmonitor"> |
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136 | <term><command>udevmonitor</command></term> |
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137 | <listitem> |
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138 | <para>Prints the event received from the kernel and the event which |
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139 | <command>udev</command> sends out after rule processing</para> |
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140 | <indexterm zone="ch-system-udev udevmonitor"> |
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141 | <primary sortas="b-udevmonitor">udevmonitor</primary> |
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142 | </indexterm> |
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143 | </listitem> |
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144 | </varlistentry> |
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145 | |
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146 | <varlistentry id="udevsettle"> |
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147 | <term><command>udevsettle</command></term> |
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148 | <listitem> |
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149 | <para>Watches the Udev event queue and exits if all current uevents |
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150 | have been handled</para> |
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151 | <indexterm zone="ch-system-udev udevsettle"> |
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152 | <primary sortas="b-udevsettle">udevsettle</primary> |
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153 | </indexterm> |
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154 | </listitem> |
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155 | </varlistentry> |
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156 | |
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157 | <varlistentry id="udevtest"> |
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158 | <term><command>udevtest</command></term> |
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159 | <listitem> |
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160 | <para>Simulates a <command>udev</command> run for the given device, |
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161 | and prints out the name of the node the real <command>udev</command> |
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162 | would have created or the name of the renamed network interface</para> |
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163 | <indexterm zone="ch-system-udev udevtest"> |
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164 | <primary sortas="b-udevtest">udevtest</primary> |
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165 | </indexterm> |
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166 | </listitem> |
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167 | </varlistentry> |
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168 | |
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169 | <varlistentry id="udevtrigger"> |
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170 | <term><command>udevtrigger</command></term> |
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171 | <listitem> |
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172 | <para>Walks the sysfs tree for devices that need to be added to the |
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173 | system.</para> |
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174 | <indexterm zone="ch-system-udev udevtrigger"> |
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175 | <primary sortas="b-udevtrigger">udevtrigger</primary> |
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176 | </indexterm> |
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177 | </listitem> |
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178 | </varlistentry> |
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179 | |
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180 | <!-- helpers start here --> |
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181 | <varlistentry id="ata_id"> |
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182 | <term><command>ata_id</command></term> |
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183 | <listitem> |
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184 | <para>Provides Udev with a unique string and additional |
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185 | information (uuid, label) for an ATA drive</para> |
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186 | <indexterm zone="ch-system-udev ata_id"> |
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187 | <primary sortas="b-ata_id">ata_id</primary> |
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188 | </indexterm> |
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189 | </listitem> |
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190 | </varlistentry> |
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191 | |
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192 | <varlistentry id="cdrom_id"> |
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193 | <term><command>cdrom_id</command></term> |
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194 | <listitem> |
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195 | <para>Print the capabilities of a CDROM or DVDROM drive.</para> |
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196 | <indexterm zone="ch-system-udev cdrom_id"> |
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197 | <primary sortas="b-cdrom_id">cdrom_id</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="create_floppy_devices"> |
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203 | <term><command>create_floppy_devices</command></term> |
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204 | <listitem> |
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205 | <para>Creates all possible floppy devices based on the CMOS type</para> |
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206 | <indexterm zone="ch-system-udev create_floppy_devices"> |
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207 | <primary sortas="b-create_floppy_devices">create_floppy_devices</primary> |
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208 | </indexterm> |
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209 | </listitem> |
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210 | </varlistentry> |
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211 | |
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212 | <varlistentry id="dasd_id"> |
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213 | <term><command>dasd_id</command></term> |
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214 | <listitem> |
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215 | <para>Read the label from an s390 block device.</para> |
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216 | <indexterm zone="ch-system-udev dasd_id"> |
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217 | <primary sortas="b-dasd_id">dasd_id</primary> |
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218 | </indexterm> |
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219 | </listitem> |
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220 | </varlistentry> |
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221 | |
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222 | <varlistentry id="edd_id"> |
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223 | <term><command>edd_id</command></term> |
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224 | <listitem> |
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225 | <para>Identify x86 disk drives from Enhanced Disk Drive calls.</para> |
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226 | <indexterm zone="ch-system-udev edd_id"> |
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227 | <primary sortas="b-edd_id">edd_id</primary> |
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228 | </indexterm> |
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229 | </listitem> |
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230 | </varlistentry> |
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231 | |
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232 | <varlistentry id="firmware.sh"> |
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233 | <term><command>firmware.sh</command></term> |
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234 | <listitem> |
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235 | <para>Script to load firmware for a device</para> |
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236 | <indexterm zone="ch-system-udev firmware.sh"> |
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237 | <primary sortas="b-firmware.sh">firmware.sh</primary> |
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238 | </indexterm> |
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239 | </listitem> |
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240 | </varlistentry> |
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241 | |
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242 | <varlistentry id="path_id"> |
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243 | <term><command>path_id</command></term> |
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244 | <listitem> |
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245 | <para>Provide the shortest possible unique hardware path to a |
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246 | device</para> |
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247 | <indexterm zone="ch-system-udev path_id"> |
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248 | <primary sortas="b-path_id">path_id</primary> |
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249 | </indexterm> |
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250 | </listitem> |
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251 | </varlistentry> |
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252 | |
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253 | <varlistentry id="scsi_id"> |
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254 | <term><command>scsi_id</command></term> |
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255 | <listitem> |
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256 | <para>Retrieve or generate a unique SCSI identifier.</para> |
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257 | <indexterm zone="ch-system-udev scsi_id"> |
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258 | <primary sortas="b-scsi_id">scsi_id</primary> |
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259 | </indexterm> |
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260 | </listitem> |
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261 | </varlistentry> |
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262 | |
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263 | <varlistentry id="usb_id"> |
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264 | <term><command>usb_id</command></term> |
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265 | <listitem> |
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266 | <para>Identify a USB block device.</para> |
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267 | <indexterm zone="ch-system-udev usb_id"> |
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268 | <primary sortas="b-usb_id">usb_id</primary> |
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269 | </indexterm> |
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270 | </listitem> |
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271 | </varlistentry> |
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272 | |
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273 | <varlistentry id="vol_id"> |
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274 | <term><command>vol_id</command></term> |
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275 | <listitem> |
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276 | <para>Probe filesystem type and read label and uuid.</para> |
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277 | <indexterm zone="ch-system-udev vol_id"> |
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278 | <primary sortas="b-vol_id">vol_id</primary> |
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279 | </indexterm> |
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280 | </listitem> |
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281 | </varlistentry> |
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282 | |
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283 | <varlistentry id="etc-udev"> |
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284 | <term><filename class="directory">/etc/udev</filename></term> |
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285 | <listitem> |
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286 | <para>Contains <command>udev</command> configuration files, |
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287 | device permissions, and rules for device naming</para> |
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288 | <indexterm zone="ch-system-udev etc-udev"> |
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289 | <primary sortas="e-/etc/udev">/etc/udev</primary> |
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290 | </indexterm> |
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291 | </listitem> |
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292 | </varlistentry> |
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293 | |
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294 | <varlistentry id="lib-udev"> |
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295 | <term><filename class="directory">/lib/udev</filename></term> |
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296 | <listitem> |
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297 | <para>Contains <command>udev</command> helper programs |
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298 | and static devices which get copied to /dev when booted.</para> |
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299 | <indexterm zone="ch-system-udev lib-udev"> |
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300 | <primary sortas="e-/lib/udev">/lib/udev</primary> |
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301 | </indexterm> |
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302 | </listitem> |
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303 | </varlistentry> |
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304 | </variablelist> |
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305 | |
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306 | </sect2> |
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307 | |
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308 | </sect1> |
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