[9dfc02f] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
---|
[b06ca36] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
---|
[9dfc02f] | 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
|
---|
| 5 | %general-entities;
|
---|
| 6 | ]>
|
---|
[ddd5542] | 7 |
|
---|
[a001133] | 8 | <sect1 id="ch-system-udev" role="wrap">
|
---|
[ddd5542] | 9 | <?dbhtml filename="udev.html"?>
|
---|
| 10 |
|
---|
[e747759] | 11 | <sect1info condition="script">
|
---|
| 12 | <productname>udev</productname>
|
---|
| 13 | <productnumber>&udev-version;</productnumber>
|
---|
| 14 | <address>&udev-url;</address>
|
---|
| 15 | </sect1info>
|
---|
| 16 |
|
---|
[ddd5542] | 17 | <title>Udev-&udev-version;</title>
|
---|
| 18 |
|
---|
| 19 | <indexterm zone="ch-system-udev">
|
---|
| 20 | <primary sortas="a-Udev">Udev</primary>
|
---|
| 21 | </indexterm>
|
---|
| 22 |
|
---|
| 23 | <sect2 role="package">
|
---|
| 24 | <title/>
|
---|
[9dfc02f] | 25 |
|
---|
[ddd5542] | 26 | <para>The Udev package contains programs for dynamic creation of device
|
---|
| 27 | nodes.</para>
|
---|
[9dfc02f] | 28 |
|
---|
[ddd5542] | 29 | <segmentedlist>
|
---|
| 30 | <segtitle>&buildtime;</segtitle>
|
---|
| 31 | <segtitle>&diskspace;</segtitle>
|
---|
[9dfc02f] | 32 |
|
---|
[ddd5542] | 33 | <seglistitem>
|
---|
[e4a5635] | 34 | <seg>&udev-ch6-sbu;</seg>
|
---|
| 35 | <seg>&udev-ch6-du;</seg>
|
---|
[ddd5542] | 36 | </seglistitem>
|
---|
| 37 | </segmentedlist>
|
---|
[9dfc02f] | 38 |
|
---|
[ddd5542] | 39 | </sect2>
|
---|
[9dfc02f] | 40 |
|
---|
[ddd5542] | 41 | <sect2 role="installation">
|
---|
| 42 | <title>Installation of Udev</title>
|
---|
| 43 |
|
---|
[7d6d34b] | 44 | <para>The udev-config tarball contains LFS-specific files used to configure
|
---|
[e1060de] | 45 | Udev. Unpack it into the Udev source directory:</para>
|
---|
[7d6d34b] | 46 |
|
---|
[0445a3d] | 47 | <screen><userinput remap="pre">tar -xvf ../&udev-config;.tar.bz2</userinput></screen>
|
---|
[7d6d34b] | 48 |
|
---|
[d2c332bc] | 49 | <para>Create some devices and directories that Udev cannot handle due to
|
---|
[61e63d3] | 50 | them being required very early in the boot process, or by Udev itself:</para>
|
---|
[d2c332bc] | 51 |
|
---|
[2b596c0b] | 52 | <screen><userinput remap="install">install -dv /lib/{firmware,udev/devices/{pts,shm}}
|
---|
[d2c332bc] | 53 | mknod -m0666 /lib/udev/devices/null c 1 3
|
---|
[61e63d3] | 54 | mknod -m0600 /lib/udev/devices/kmsg c 1 11
|
---|
[d2c332bc] | 55 | ln -sv /proc/self/fd /lib/udev/devices/fd
|
---|
| 56 | ln -sv /proc/self/fd/0 /lib/udev/devices/stdin
|
---|
| 57 | ln -sv /proc/self/fd/1 /lib/udev/devices/stdout
|
---|
| 58 | ln -sv /proc/self/fd/2 /lib/udev/devices/stderr
|
---|
| 59 | ln -sv /proc/kcore /lib/udev/devices/core</userinput></screen>
|
---|
| 60 |
|
---|
[ddd5542] | 61 | <para>Compile the package:</para>
|
---|
[9dfc02f] | 62 |
|
---|
[0445a3d] | 63 | <screen><userinput remap="make">make EXTRAS="`echo extras/*/`"</userinput></screen>
|
---|
[81fd230] | 64 |
|
---|
[ddd5542] | 65 | <variablelist>
|
---|
| 66 | <title>The meaning of the make option:</title>
|
---|
| 67 |
|
---|
| 68 | <varlistentry>
|
---|
[d2c332bc] | 69 | <term><parameter>EXTRAS=...</parameter></term>
|
---|
[ddd5542] | 70 | <listitem>
|
---|
[8536c02] | 71 | <para>This builds the helper binaries that can aid in writing custom
|
---|
[d2c332bc] | 72 | Udev rules.</para>
|
---|
[ddd5542] | 73 | </listitem>
|
---|
| 74 | </varlistentry>
|
---|
[09043c0] | 75 |
|
---|
[ddd5542] | 76 | </variablelist>
|
---|
[09043c0] | 77 |
|
---|
[0445a3d] | 78 | <para>To test the results, issue:</para>
|
---|
| 79 |
|
---|
| 80 | <screen><userinput remap="test">make test</userinput></screen>
|
---|
[81fd230] | 81 |
|
---|
[c226182] | 82 | <para>Note that the Udev testsuite will produce numerous messages in
|
---|
| 83 | the host system's logs. These are harmless and can be ignored.</para>
|
---|
| 84 |
|
---|
[ddd5542] | 85 | <para>Install the package:</para>
|
---|
[9dfc02f] | 86 |
|
---|
[0445a3d] | 87 | <screen><userinput remap="install">make DESTDIR=/ EXTRAS="`echo extras/*/`" install</userinput></screen>
|
---|
[09043c0] | 88 |
|
---|
[ddd5542] | 89 | <variablelist>
|
---|
| 90 | <title>The meaning of the make parameter:</title>
|
---|
[09043c0] | 91 |
|
---|
[ddd5542] | 92 | <varlistentry>
|
---|
| 93 | <term><parameter>DESTDIR=/</parameter></term>
|
---|
| 94 | <listitem>
|
---|
| 95 | <para>This prevents the Udev build process from killing any
|
---|
| 96 | <command>udevd</command> processes that may be running on the
|
---|
| 97 | host system.</para>
|
---|
| 98 | </listitem>
|
---|
| 99 | </varlistentry>
|
---|
[9dfc02f] | 100 |
|
---|
[ddd5542] | 101 | </variablelist>
|
---|
| 102 |
|
---|
[61e63d3] | 103 | <para>Udev has to be configured in order to work properly, as its default
|
---|
[9faa3e2] | 104 | configuration does not cover all devices. First install a few extra rules
|
---|
| 105 | files from Udev to help support device-mapper and RAID setups:</para>
|
---|
| 106 |
|
---|
| 107 | <screen><userinput remap="install">install -m644 -v etc/udev/packages/64-*.rules \
|
---|
| 108 | /etc/udev/rules.d/</userinput></screen>
|
---|
| 109 |
|
---|
| 110 | <para>Now install a file to create symlinks for certain hand-held devices:</para>
|
---|
| 111 |
|
---|
| 112 | <screen><userinput remap="install">install -m644 -v etc/udev/packages/40-pilot-links.rules \
|
---|
| 113 | /etc/udev/rules.d/40-pilot-links.rules</userinput></screen>
|
---|
| 114 |
|
---|
| 115 | <!-- There are more files available in the packages/ directory, if we want
|
---|
| 116 | to consider using them. Most are probably irrelevant to LFS though.
|
---|
| 117 | "alsa" isn't, but we already have those rules, using a better set of
|
---|
| 118 | matches. Most of the files in packages/ are for other architectures. -->
|
---|
| 119 |
|
---|
| 120 | <para>Now install the LFS-specific custom rules files:</para>
|
---|
[7eac3e32] | 121 |
|
---|
[0445a3d] | 122 | <screen><userinput remap="install">cd &udev-config;
|
---|
[7e6fb44] | 123 | make install</userinput></screen>
|
---|
| 124 |
|
---|
| 125 | <para>Install the documentation that explains the LFS-specific rules
|
---|
| 126 | files:</para>
|
---|
| 127 |
|
---|
[0445a3d] | 128 | <screen><userinput remap="install">make install-doc</userinput></screen>
|
---|
[7e6fb44] | 129 |
|
---|
[dbfd971] | 130 | <para>Install the documentation that explains the commonly-used rules
|
---|
| 131 | files provided by Udev:</para>
|
---|
[7e6fb44] | 132 |
|
---|
[0445a3d] | 133 | <screen><userinput remap="install">make install-extra-doc</userinput></screen>
|
---|
[7e6fb44] | 134 |
|
---|
| 135 | <para>Install the documentation that explains how to create custom Udev
|
---|
| 136 | rules:</para>
|
---|
| 137 |
|
---|
[0445a3d] | 138 | <screen><userinput remap="install">cd ..
|
---|
[61e63d3] | 139 | install -dv /usr/share/doc/udev-&udev-version;
|
---|
[997a8b7] | 140 | install -m644 -v docs/writing_udev_rules/index.html \
|
---|
[2c558d69] | 141 | /usr/share/doc/udev-&udev-version;/index.html</userinput></screen>
|
---|
[7eac3e32] | 142 |
|
---|
[ddd5542] | 143 | </sect2>
|
---|
| 144 |
|
---|
| 145 | <sect2 id="contents-udev" role="content">
|
---|
| 146 | <title>Contents of Udev</title>
|
---|
| 147 |
|
---|
| 148 | <segmentedlist>
|
---|
| 149 | <segtitle>Installed programs</segtitle>
|
---|
[2791a8e] | 150 | <segtitle>Installed libraries</segtitle>
|
---|
[ddd5542] | 151 | <segtitle>Installed directory</segtitle>
|
---|
| 152 |
|
---|
| 153 | <seglistitem>
|
---|
[61e63d3] | 154 | <seg>ata_id, cdrom_id, collect, create_floppy_devices, edd_id,
|
---|
| 155 | firmware.sh, fstab_import, path_id, scsi_id, udevadm, udevd,
|
---|
| 156 | usb_id, vol_id, write_cd_rules, and write_net_rules</seg>
|
---|
[2791a8e] | 157 | <seg>libvolume_id</seg>
|
---|
[ddd5542] | 158 | <seg>/etc/udev</seg>
|
---|
| 159 | </seglistitem>
|
---|
| 160 | </segmentedlist>
|
---|
| 161 |
|
---|
| 162 | <variablelist>
|
---|
| 163 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
---|
| 164 | <?dbfo list-presentation="list"?>
|
---|
| 165 | <?dbhtml list-presentation="table"?>
|
---|
| 166 |
|
---|
[d2c332bc] | 167 | <varlistentry id="ata_id">
|
---|
| 168 | <term><command>ata_id</command></term>
|
---|
| 169 | <listitem>
|
---|
| 170 | <para>Provides Udev with a unique string and
|
---|
| 171 | additional information (uuid, label) for an ATA drive</para>
|
---|
| 172 | <indexterm zone="ch-system-udev ata_id">
|
---|
| 173 | <primary sortas="b-ata_id">ata_id</primary>
|
---|
| 174 | </indexterm>
|
---|
| 175 | </listitem>
|
---|
| 176 | </varlistentry>
|
---|
| 177 |
|
---|
| 178 | <varlistentry id="cdrom_id">
|
---|
| 179 | <term><command>cdrom_id</command></term>
|
---|
| 180 | <listitem>
|
---|
| 181 | <para>Provides Udev with the capabilities of a
|
---|
| 182 | CD-ROM or DVD-ROM drive</para>
|
---|
| 183 | <indexterm zone="ch-system-udev cdrom_id">
|
---|
| 184 | <primary sortas="b-cdrom_id">cdrom_id</primary>
|
---|
| 185 | </indexterm>
|
---|
| 186 | </listitem>
|
---|
| 187 | </varlistentry>
|
---|
| 188 |
|
---|
[61e63d3] | 189 | <varlistentry id="collect">
|
---|
| 190 | <term><command>collect</command></term>
|
---|
| 191 | <listitem>
|
---|
| 192 | <para>Given an ID for the current uevent and a list of
|
---|
| 193 | IDs (for all target uevents), registers the current ID
|
---|
| 194 | and indicates whether all target IDs have been registered</para>
|
---|
| 195 | <indexterm zone="ch-system-udev collect">
|
---|
| 196 | <primary sortas="b-collect">collect</primary>
|
---|
| 197 | </indexterm>
|
---|
| 198 | </listitem>
|
---|
| 199 | </varlistentry>
|
---|
| 200 |
|
---|
[d2c332bc] | 201 | <varlistentry id="create_floppy_devices">
|
---|
| 202 | <term><command>create_floppy_devices</command></term>
|
---|
[ddd5542] | 203 | <listitem>
|
---|
[d2c332bc] | 204 | <para>Creates all possible floppy devices based on the CMOS type</para>
|
---|
| 205 | <indexterm zone="ch-system-udev create_floppy_devices">
|
---|
| 206 | <primary sortas="b-create_floppy_devices">create_floppy_devices</primary>
|
---|
[ddd5542] | 207 | </indexterm>
|
---|
| 208 | </listitem>
|
---|
| 209 | </varlistentry>
|
---|
| 210 |
|
---|
[d2c332bc] | 211 | <varlistentry id="edd_id">
|
---|
| 212 | <term><command>edd_id</command></term>
|
---|
[ddd5542] | 213 | <listitem>
|
---|
[d2c332bc] | 214 | <para>Provides Udev with the EDD ID for a BIOS disk drive</para>
|
---|
| 215 | <indexterm zone="ch-system-udev edd_id">
|
---|
| 216 | <primary sortas="b-edd_id">edd_id</primary>
|
---|
[ddd5542] | 217 | </indexterm>
|
---|
| 218 | </listitem>
|
---|
| 219 | </varlistentry>
|
---|
| 220 |
|
---|
[2791a8e] | 221 | <varlistentry id="firmware.sh">
|
---|
| 222 | <term><command>firmware.sh</command></term>
|
---|
[ddd5542] | 223 | <listitem>
|
---|
[d2c332bc] | 224 | <para>Uploads firmware to devices</para>
|
---|
[2791a8e] | 225 | <indexterm zone="ch-system-udev firmware.sh">
|
---|
| 226 | <primary sortas="b-firmware.sh">firmware.sh</primary>
|
---|
[d2c332bc] | 227 | </indexterm>
|
---|
| 228 | </listitem>
|
---|
| 229 | </varlistentry>
|
---|
| 230 |
|
---|
[61e63d3] | 231 | <varlistentry id="fstab_import">
|
---|
| 232 | <term><command>fstab_import</command></term>
|
---|
| 233 | <listitem>
|
---|
| 234 | <para>Finds an entry in <filename>/etc/fstab</filename> that
|
---|
| 235 | matches the current device, and provides its information to
|
---|
| 236 | Udev</para>
|
---|
| 237 | <indexterm zone="ch-system-udev fstab_import">
|
---|
| 238 | <primary sortas="b-fstab_import">fstab_import</primary>
|
---|
| 239 | </indexterm>
|
---|
| 240 | </listitem>
|
---|
| 241 | </varlistentry>
|
---|
| 242 |
|
---|
[7d6d34b] | 243 | <varlistentry id="path_id">
|
---|
| 244 | <term><command>path_id</command></term>
|
---|
| 245 | <listitem>
|
---|
[9058aa1] | 246 | <para>Provides the shortest possible unique hardware path to a
|
---|
[7d6d34b] | 247 | device</para>
|
---|
| 248 | <indexterm zone="ch-system-udev path_id">
|
---|
| 249 | <primary sortas="b-path_id">path_id</primary>
|
---|
| 250 | </indexterm>
|
---|
| 251 | </listitem>
|
---|
| 252 | </varlistentry>
|
---|
| 253 |
|
---|
[d2c332bc] | 254 | <varlistentry id="scsi_id">
|
---|
| 255 | <term><command>scsi_id</command></term>
|
---|
| 256 | <listitem>
|
---|
| 257 | <para>Provides Udev with a unique SCSI identifier
|
---|
| 258 | based on the data returned from sending a SCSI INQUIRY command to
|
---|
| 259 | the specified device</para>
|
---|
| 260 | <indexterm zone="ch-system-udev scsi_id">
|
---|
| 261 | <primary sortas="b-scsi_id">scsi_id</primary>
|
---|
[ddd5542] | 262 | </indexterm>
|
---|
| 263 | </listitem>
|
---|
| 264 | </varlistentry>
|
---|
| 265 |
|
---|
[61e63d3] | 266 | <varlistentry id="udevadm">
|
---|
| 267 | <term><command>udevadm</command></term>
|
---|
[ddd5542] | 268 | <listitem>
|
---|
[61e63d3] | 269 | <para>Generic udev administration tool: controls the udevd daemon,
|
---|
| 270 | provides info from the Udev database, monitors uevents, waits for
|
---|
| 271 | uevents to finish, tests Udev configuration, and triggers uevents
|
---|
| 272 | for a given device</para>
|
---|
| 273 | <indexterm zone="ch-system-udev udevadm">
|
---|
| 274 | <primary sortas="b-udevadm">udevadm</primary>
|
---|
[ddd5542] | 275 | </indexterm>
|
---|
| 276 | </listitem>
|
---|
| 277 | </varlistentry>
|
---|
| 278 |
|
---|
| 279 | <varlistentry id="udevd">
|
---|
| 280 | <term><command>udevd</command></term>
|
---|
| 281 | <listitem>
|
---|
[d2c332bc] | 282 | <para>A daemon that listens for uevents on the netlink socket,
|
---|
| 283 | creates devices and runs the configured external programs in
|
---|
| 284 | response to these uevents</para>
|
---|
[ddd5542] | 285 | <indexterm zone="ch-system-udev udevd">
|
---|
| 286 | <primary sortas="b-udevd">udevd</primary>
|
---|
| 287 | </indexterm>
|
---|
| 288 | </listitem>
|
---|
| 289 | </varlistentry>
|
---|
| 290 |
|
---|
[d2c332bc] | 291 | <varlistentry id="usb_id">
|
---|
| 292 | <term><command>usb_id</command></term>
|
---|
[ddd5542] | 293 | <listitem>
|
---|
[d2c332bc] | 294 | <para>Provides Udev with information about USB
|
---|
| 295 | devices</para>
|
---|
| 296 | <indexterm zone="ch-system-udev usb_id">
|
---|
| 297 | <primary sortas="b-usb_id">usb_id</primary>
|
---|
[ddd5542] | 298 | </indexterm>
|
---|
| 299 | </listitem>
|
---|
| 300 | </varlistentry>
|
---|
| 301 |
|
---|
[d2c332bc] | 302 | <varlistentry id="vol_id">
|
---|
| 303 | <term><command>vol_id</command></term>
|
---|
[ddd5542] | 304 | <listitem>
|
---|
[d2c332bc] | 305 | <para>Provides Udev with the label and uuid of a
|
---|
| 306 | filesystem</para>
|
---|
| 307 | <indexterm zone="ch-system-udev vol_id">
|
---|
| 308 | <primary sortas="b-vol_id">vol_id</primary>
|
---|
[ddd5542] | 309 | </indexterm>
|
---|
| 310 | </listitem>
|
---|
| 311 | </varlistentry>
|
---|
| 312 |
|
---|
[2791a8e] | 313 | <varlistentry id="write_cd_rules">
|
---|
| 314 | <term><command>write_cd_rules</command></term>
|
---|
| 315 | <listitem>
|
---|
| 316 | <para>A script which generates Udev rules to provide stable names for
|
---|
| 317 | optical drives (see also <xref linkend="ch-scripts-symlinks"/>)</para>
|
---|
| 318 | <indexterm zone="ch-system-udev write_cd_rules">
|
---|
| 319 | <primary sortas="b-write_cd_rules">write_cd_rules</primary>
|
---|
| 320 | </indexterm>
|
---|
| 321 | </listitem>
|
---|
| 322 | </varlistentry>
|
---|
| 323 |
|
---|
| 324 | <varlistentry id="write_net_rules">
|
---|
| 325 | <term><command>write_net_rules</command></term>
|
---|
| 326 | <listitem>
|
---|
| 327 | <para>A script which generates rules to provide stable names for
|
---|
| 328 | network interfaces (see also <xref linkend="ch-scripts-network"/>)
|
---|
| 329 | </para>
|
---|
| 330 | <indexterm zone="ch-system-udev write_net_rules">
|
---|
| 331 | <primary sortas="b-write_net_rules">write_net_rules</primary>
|
---|
| 332 | </indexterm>
|
---|
| 333 | </listitem>
|
---|
| 334 | </varlistentry>
|
---|
| 335 |
|
---|
| 336 | <varlistentry id="libvolume_id">
|
---|
| 337 | <term><command>libvolume_id</command></term>
|
---|
| 338 | <listitem>
|
---|
| 339 | <para></para>
|
---|
| 340 | <indexterm zone="ch-system-udev libvolume_id">
|
---|
| 341 | <primary sortas="c-libvolume_id">libvolume_id</primary>
|
---|
| 342 | </indexterm>
|
---|
| 343 | </listitem>
|
---|
| 344 | </varlistentry>
|
---|
| 345 |
|
---|
[ddd5542] | 346 | <varlistentry id="etc-udev">
|
---|
| 347 | <term><filename class="directory">/etc/udev</filename></term>
|
---|
| 348 | <listitem>
|
---|
[9058aa1] | 349 | <para>Contains Udev configuration files,
|
---|
[ddd5542] | 350 | device permissions, and rules for device naming</para>
|
---|
| 351 | <indexterm zone="ch-system-udev etc-udev">
|
---|
| 352 | <primary sortas="e-/etc/udev">/etc/udev</primary>
|
---|
| 353 | </indexterm>
|
---|
| 354 | </listitem>
|
---|
| 355 | </varlistentry>
|
---|
| 356 |
|
---|
| 357 | </variablelist>
|
---|
| 358 |
|
---|
| 359 | </sect2>
|
---|
[9dfc02f] | 360 |
|
---|
| 361 | </sect1>
|
---|