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Updated to udev-096 and udev-config-20060712. Closes #1804.
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@7659 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
This commit is contained in:
Dan Nichilson
parent
cd2f7f0340
commit
a263c7ad8c
@ -43,6 +43,13 @@
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man page symlink in all available languages. Closes ticket
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#1811. Thanks to Alexander Patrakov.</para>
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</listitem>
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<listitem>
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<para>[dnicholson] - Updated to udev-096 and udev-config-20060712.
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Removed the bug.c program and the cd symlinks script. The cd
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symlinks will be covered in Chapter 7. Closes ticket #1804. Thanks
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to Alexander Patrakov for making the appropriate changes in the
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Udev rules.</para>
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</listitem>
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</itemizedlist>
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</listitem>
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@ -94,87 +94,17 @@ ln -sv /proc/kcore /lib/udev/devices/core</userinput></screen>
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</variablelist>
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<para>Udev's configuration is far from ideal by default, so install
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the configuration files here:</para>
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<para>Udev has to be configured in order to work properly, and does
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not come with any sort of "default" configuration. Install the
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LFS-specific configuration files:</para>
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<!-- FIXME: 90-bug.rules should be removed from the tarball once the book is released -->
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<screen><userinput>cp -v &udev-config;/[0-9]* /etc/udev/rules.d/</userinput></screen>
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<para>Now install a helper script that is not included in the main Udev
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tarball:</para>
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<screen><userinput>install -v -m 744 &udev-config;/write_cd_aliases /lib/udev/</userinput></screen>
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<para>Install the documentation that explains how to create Udev rules:</para>
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<screen><userinput>install -m644 -D -v docs/writing_udev_rules/index.html \
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/usr/share/doc/udev-&udev-version;/index.html</userinput></screen>
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<important>
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<para>When Udev is started by the LFS-Bootscripts, a replay of all kernel
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device events happens. These events tell Udev what devices exist.
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Sometimes the Udev bootscript doesn't wait long enough for
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<command>udevd</command> to process all of the replayed events and
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consequently the devices for those missed events are not created before the
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script exits. Since <command>udevd</command> is still running in the
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background, the devices will be created a few milliseconds later, but the
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next bootscript to run may require a device to exist before it has been
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created. To avoid such missed events, and to avoid hardcoding an overly
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long wait time, It is recommended that you run the following commands to
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aid the LFS development team in debugging these missed events and finding
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an acceptable solution more quickly.</para>
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<para>First, create a simple C file:</para>
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<screen><userinput>cat > bug.c << EOF
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<literal>/* Simple event recorder */
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <argz.h>
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int main(int argc, char * argv[])
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{
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char * envar;
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char * envz;
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size_t len;
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int bug;
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bug = open("/dev/bug", O_WRONLY | O_APPEND);
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if (bug == -1)
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return 0;
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/* Ignore everything USB-related to avoid spamming the list */
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envar = getenv("PHYSDEVPATH");
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if (envar && strstr(envar, "usb"))
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return 0;
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envar = getenv("DEVPATH");
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if (envar && strstr(envar, "usb"))
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return 0;
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setenv("_SEPARATOR", "-------------------------------", 1);
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argz_create(environ, &envz, &len);
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argz_stringify(envz, len, '\n');
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envz[len-1]='\n';
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write(bug, envz, len);
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close(bug);
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free(envz);
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return 0;
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}</literal>
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EOF</userinput></screen>
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<para>Now compile it:</para>
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<screen><userinput>gcc -o /lib/udev/bug bug.c</userinput></screen>
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<para>When booting the new LFS system, if any events are missed, a warning
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message will appear and a <filename>/dev/bugreport</filename> file will be
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created. The warning message will tell you where to send feedback.</para>
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</important>
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</sect2>
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<sect2 id="contents-udev" role="content">
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@ -482,18 +482,18 @@
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<!ENTITY texinfo-ch6-du "16.6 MB">
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<!ENTITY texinfo-ch6-sbu "0.2 SBU">
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<!ENTITY udev-version "092">
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<!ENTITY udev-version "096">
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<!ENTITY udev-size "190 KB">
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<!ENTITY udev-url "&kernel;linux/utils/kernel/hotplug/udev-&udev-version;.tar.bz2">
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<!ENTITY udev-md5 "5e9ff419ac0132531990a7c5db80ef3e">
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<!ENTITY udev-md5 "f4effef7807ce1dc91ab581686ef197b">
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<!ENTITY udev-home "http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html">
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<!ENTITY udev-ch6-du "6.8 MB">
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<!ENTITY udev-ch6-sbu "0.1 SBU">
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<!ENTITY udev-config "udev-config-20060515">
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<!ENTITY udev-config "udev-config-20060712">
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<!ENTITY udev-config-size "4 KB">
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<!ENTITY udev-config-url "http://downloads.linuxfromscratch.org/&udev-config;.tar.bz2">
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<!ENTITY udev-config-md5 "0caf192fcbcc535f1201df838a675c50">
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<!ENTITY udev-config-md5 "7bc92ab0aafa06adbb62a493bcc71186">
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<!ENTITY udev-config-home " ">
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<!ENTITY util-linux-version "2.12r">
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