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Several minor wording changes in chapter 8 (matt).

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@6318 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
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共有 10 个文件被更改,包括 181 次插入196 次删除
  1. 3 0
      chapter01/changelog.xml
  2. 16 16
      chapter07/bootscripts.xml
  3. 20 20
      chapter07/console.xml
  4. 8 8
      chapter07/hostname.xml
  5. 17 18
      chapter07/network.xml
  6. 3 4
      chapter07/profile.xml
  7. 18 21
      chapter07/setclock.xml
  8. 67 77
      chapter07/udev.xml
  9. 27 30
      chapter07/usage.xml
  10. 2 2
      general.ent

+ 3 - 0
chapter01/changelog.xml

@@ -91,6 +91,9 @@ First a summary, then a detailed log.</para>
 </itemizedlist>
 </itemizedlist>
 </listitem>
 </listitem>
 
 
+<listitem><para>July  2nd, 2005 [archaic]: Several minor wording changes in
+chapter 8 (matt).</para></listitem>
+
 <listitem><para>July  1st, 2005 [archaic]: Brought all occurences of
 <listitem><para>July  1st, 2005 [archaic]: Brought all occurences of
 LFS-Bootscripts into conformity.</para></listitem>
 LFS-Bootscripts into conformity.</para></listitem>
 
 

+ 16 - 16
chapter07/bootscripts.xml

@@ -50,8 +50,8 @@ swap, sysklogd, template, and udev</seg></seglistitem>
 <varlistentry id="checkfs-bootscripts">
 <varlistentry id="checkfs-bootscripts">
 <term><command>checkfs</command></term>
 <term><command>checkfs</command></term>
 <listitem>
 <listitem>
-<para>Checks the file systems before they are mounted (with the exception of journal
-and network based file systems)</para>
+<para>Checks the integrity of the file systems before they are mounted (with the
+exception of journal and network based file systems)</para>
 <indexterm zone="ch-scripts-bootscripts checkfs-bootscripts"><primary sortas="d-checkfs">checkfs</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts checkfs-bootscripts"><primary sortas="d-checkfs">checkfs</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>
@@ -71,8 +71,8 @@ and removes the possibly present <filename>/etc/nologin</filename>,
 <varlistentry id="console-bootscripts">
 <varlistentry id="console-bootscripts">
 <term><command>console</command></term>
 <term><command>console</command></term>
 <listitem>
 <listitem>
-<para>Loads the keymap table specified as proper for the keyboard
-layout; it also sets the screen font</para>
+<para>Loads the correct keymap table for the desired keyboard layout; it also
+sets the screen font</para>
 <indexterm zone="ch-scripts-bootscripts console-bootscripts"><primary sortas="d-console">console</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts console-bootscripts"><primary sortas="d-console">console</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>
@@ -80,8 +80,8 @@ layout; it also sets the screen font</para>
 <varlistentry id="functions-bootscripts">
 <varlistentry id="functions-bootscripts">
 <term><command>functions</command></term>
 <term><command>functions</command></term>
 <listitem>
 <listitem>
-<para>Contains functions shared among different scripts, such as error
-and status checking</para>
+<para>Contains common functions that are used by several bootscripts, such as
+error and status checking</para>
 <indexterm zone="ch-scripts-bootscripts functions-bootscripts"><primary sortas="d-functions">functions</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts functions-bootscripts"><primary sortas="d-functions">functions</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>
@@ -97,7 +97,7 @@ and status checking</para>
 <varlistentry id="hotplug-bootscripts">
 <varlistentry id="hotplug-bootscripts">
 <term><command>hotplug</command></term>
 <term><command>hotplug</command></term>
 <listitem>
 <listitem>
-<para>Load modules for system devices</para>
+<para>Loads modules for system devices</para>
 <indexterm zone="ch-scripts-bootscripts hotplug-bootscripts"><primary sortas="d-hotplug">hotplug</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts hotplug-bootscripts"><primary sortas="d-hotplug">hotplug</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>
@@ -105,7 +105,7 @@ and status checking</para>
 <varlistentry id="ifdown-bootscripts">
 <varlistentry id="ifdown-bootscripts">
 <term><command>ifdown</command></term>
 <term><command>ifdown</command></term>
 <listitem>
 <listitem>
-<para>Assists the network script with network devices</para>
+<para>Assists the network script with stopping network devices</para>
 <indexterm zone="ch-scripts-bootscripts ifdown-bootscripts"><primary sortas="d-ifdown">ifdown</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts ifdown-bootscripts"><primary sortas="d-ifdown">ifdown</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>
@@ -113,7 +113,7 @@ and status checking</para>
 <varlistentry id="ifup-bootscripts">
 <varlistentry id="ifup-bootscripts">
 <term><command>ifup</command></term>
 <term><command>ifup</command></term>
 <listitem>
 <listitem>
-<para>Assists the network script with network devices</para>
+<para>Assists the network script with starting network devices</para>
 <indexterm zone="ch-scripts-bootscripts ifup-bootscripts"><primary sortas="d-ifup">ifup</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts ifup-bootscripts"><primary sortas="d-ifup">ifup</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>
@@ -138,8 +138,8 @@ and status checking</para>
 <varlistentry id="mountkernfs-bootscripts">
 <varlistentry id="mountkernfs-bootscripts">
 <term><command>mountkernfs</command></term>
 <term><command>mountkernfs</command></term>
 <listitem>
 <listitem>
-<para>Is used to mount kernel-provided file systems, such as
-<systemitem class="filesystem">proc</systemitem></para>
+<para>Mounts virtual kernel file systems, such as <systemitem
+class="filesystem">proc</systemitem></para>
 <indexterm zone="ch-scripts-bootscripts mountkernfs-bootscripts"><primary sortas="d-mountkernfs">mountkernfs</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts mountkernfs-bootscripts"><primary sortas="d-mountkernfs">mountkernfs</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>
@@ -156,9 +156,9 @@ the default gateway (where applicable)</para>
 <varlistentry id="rc-bootscripts">
 <varlistentry id="rc-bootscripts">
 <term><command>rc</command></term>
 <term><command>rc</command></term>
 <listitem>
 <listitem>
-<para>The master run-level control script; it is responsible for
-running all other scripts one-by-one, in a sequence determined by
-the name of the symbolic links being processed</para>
+<para>The master run-level control script; it is responsible for running all the
+other bootscripts one-by-one, in a sequence determined by the name of the
+symbolic links being processed</para>
 <indexterm zone="ch-scripts-bootscripts rc-bootscripts"><primary sortas="d-rc">rc</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts rc-bootscripts"><primary sortas="d-rc">rc</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>
@@ -226,8 +226,8 @@ daemons</para>
 <varlistentry id="udev-bootscripts">
 <varlistentry id="udev-bootscripts">
 <term><command>udev</command></term>
 <term><command>udev</command></term>
 <listitem>
 <listitem>
-<para>Sets up udev and create the device nodes in <filename
-class="directory">/dev</filename></para>
+<para>Prepares the <filename class="directory">/dev</filename> directory and
+starts Udev</para>
 <indexterm zone="ch-scripts-bootscripts udev-bootscripts"><primary sortas="d-udev">udev</primary></indexterm>
 <indexterm zone="ch-scripts-bootscripts udev-bootscripts"><primary sortas="d-udev">udev</primary></indexterm>
 </listitem>
 </listitem>
 </varlistentry>
 </varlistentry>

+ 20 - 20
chapter07/console.xml

@@ -11,26 +11,26 @@
 <primary sortas="d-console">console</primary>
 <primary sortas="d-console">console</primary>
 <secondary>configuring</secondary></indexterm>
 <secondary>configuring</secondary></indexterm>
 
 
-<para>This section discusses how to configure the
-<command>console</command> initscript that sets up the keyboard map
-and the console font. If non-ASCII characters (British pound and Euro
-character are examples of non-ASCII characters) will not be used and
-the keyboard is a U.S. one, skip this section. Without the
-configuration file, the console initscript will do nothing.</para>
-
-<para>The <command>console</command> script uses the
-<filename>/etc/sysconfig/console</filename> as a configuration file.
-Decide which keymap and screen font will be used. The
-language-specific HOWTO can help with this. A pre-made
-<filename>/etc/sysconfig/console</filename> file with known settings
-for several countries was installed with the LFS-Bootscripts package,
-so the relevant section can be uncommented if the country is
-supported. If still in doubt, look in the <filename
-class="directory">/usr/share/kbd</filename> directory for valid
-keymaps and screen fonts.  Read the <command>loadkeys</command> and
-<command>setfont</command> manual pages
-and determine the correct arguments for these programs. Once decided,
-create the configuration file with the following command:</para>
+<para>This section discusses how to configure the <command>console</command>
+bootscript that sets up the keyboard map and the console font. If non-ASCII
+characters (British pound and Euro character are examples of non-ASCII
+characters) will not be used and the keyboard is a U.S. one, skip this section.
+Without the configuration file, the <command>console</command> bootscript will
+do nothing.</para>
+
+<para>The <command>console</command> script reads the
+<filename>/etc/sysconfig/console</filename> file for configuration information.
+Decide which keymap and screen font will be used. Various language-specific
+HOWTO's can also help with this (see <ulink
+url="http://www.tldp.org/HOWTO/HOWTO-INDEX/other-lang.html"/>. A pre-made
+<filename>/etc/sysconfig/console</filename> file with known settings for several
+countries was installed with the LFS-Bootscripts package, so the relevant
+section can be uncommented if the country is supported. If still in doubt, look
+in the <filename class="directory">/usr/share/kbd</filename> directory for valid
+keymaps and screen fonts. Read the <command>loadkeys</command> and
+<command>setfont</command> manual pages and determine the correct arguments for
+these programs. Once decided, create the configuration file with the following
+command:</para>
 
 
 <screen><userinput>cat &gt;/etc/sysconfig/console &lt;&lt;"EOF"
 <screen><userinput>cat &gt;/etc/sysconfig/console &lt;&lt;"EOF"
 <literal>KEYMAP="<replaceable>[arguments for loadkeys]</replaceable>"
 <literal>KEYMAP="<replaceable>[arguments for loadkeys]</replaceable>"

+ 8 - 8
chapter07/hostname.xml

@@ -11,19 +11,19 @@
 <primary sortas="d-localnet">localnet</primary>
 <primary sortas="d-localnet">localnet</primary>
 <secondary>configuring</secondary></indexterm>
 <secondary>configuring</secondary></indexterm>
 
 
-<para>Part of the <command>localnet</command> script is setting up the system's
-hostname. This needs to be configured in the
+<para>Part of the job of the <command>localnet</command> script is setting the
+system's hostname. This needs to be configured in the
 <filename>/etc/sysconfig/network</filename> file.</para>
 <filename>/etc/sysconfig/network</filename> file.</para>
 
 
-<para>Create the <filename>/etc/sysconfig/network</filename> file and enter a hostname by
-running:</para>
+<para>Create the <filename>/etc/sysconfig/network</filename> file and enter a
+hostname by running:</para>
 
 
 <screen><userinput>echo "HOSTNAME=<replaceable>[lfs]</replaceable>" &gt; /etc/sysconfig/network</userinput></screen>
 <screen><userinput>echo "HOSTNAME=<replaceable>[lfs]</replaceable>" &gt; /etc/sysconfig/network</userinput></screen>
 
 
-<para><replaceable>[lfs]</replaceable> needs to be replaced with the
-name the computer is to be called. Do not enter the Fully Qualified
-Domain Name (FQDN) here. That information will be put in the
-<filename>/etc/hosts</filename> file later.</para>
+<para><replaceable>[lfs]</replaceable> needs to be replaced with the name given
+to the computer. Do not enter the Fully Qualified Domain Name (FQDN) here. That
+information will be put in the <filename>/etc/hosts</filename> file in the next
+section.</para>
 
 
 </sect1>
 </sect1>
 
 

+ 17 - 18
chapter07/network.xml

@@ -47,16 +47,15 @@ PREFIX=24
 BROADCAST=192.168.1.255</literal>
 BROADCAST=192.168.1.255</literal>
 EOF</userinput></screen>
 EOF</userinput></screen>
 
 
-<para>The values of these variables must be changed in every file to
-match the proper setup. If the <envar>ONBOOT</envar> variable is
-set to <quote>yes</quote> the network script will bring up the
-Network Interface Card (NIC) during booting of the system. If set
-to anything but <quote>yes</quote> the NIC will be ignored by the
-network script and not brought up.</para>
-
-<para>The <envar>SERVICE</envar> variable defines the method of obtaining the IP
-address. The LFS-Bootscripts package has a modular IP assignment format, and
-creating additional files in the <filename
+<para>The values of these variables must be changed in every file to match the
+proper setup. If the <envar>ONBOOT</envar> variable is set to <quote>yes</quote>
+the network script will bring up the Network Interface Card (NIC) during booting
+of the system. If set to anything but <quote>yes</quote> the NIC will be ignored
+by the network script and not be brought up.</para>
+
+<para>The <envar>SERVICE</envar> variable defines the method used in obtaining
+the IP address. The LFS-Bootscripts package has a modular IP assignment format,
+and creating additional files in the <filename
 class="directory">/etc/sysconfig/network-devices/services</filename> directory
 class="directory">/etc/sysconfig/network-devices/services</filename> directory
 allows other IP assignment methods. This is commonly used for Dynamic Host
 allows other IP assignment methods. This is commonly used for Dynamic Host
 Configuration Protocol (DHCP), which is addressed in the BLFS book.</para>
 Configuration Protocol (DHCP), which is addressed in the BLFS book.</para>
@@ -65,14 +64,14 @@ Configuration Protocol (DHCP), which is addressed in the BLFS book.</para>
 the default gateway IP address, if one is present. If not, then comment out
 the default gateway IP address, if one is present. If not, then comment out
 the variable entirely.</para>
 the variable entirely.</para>
 
 
-<para>The <envar>PREFIX</envar> variable needs to contain the
-number of bits used in the subnet. Each octet in an IP address is 8
-bits. If the subnet's netmask is 255.255.255.0, then it is using the
-first three octets (24 bits) to specify the network number. If the
-netmask is 255.255.255.240, it would be using the first 28 bits.
-Prefixes longer than 24 bits are commonly used by DSL and cable-based
-Internet Service Providers (ISPs).  In this example (PREFIX=24), the netmask
-is 255.255.255.0. Adjust according to the specific subnet.</para>
+<para>The <envar>PREFIX</envar> variable needs to contain the number of bits
+used in the subnet. Each octet in an IP address is 8 bits. If the subnet's
+netmask is 255.255.255.0, then it is using the first three octets (24 bits) to
+specify the network number. If the netmask is 255.255.255.240, it would be using
+the first 28 bits.  Prefixes longer than 24 bits are commonly used by DSL and
+cable-based Internet Service Providers (ISPs). In this example (PREFIX=24), the
+netmask is 255.255.255.0. Adjust the <envar>PREFIX</envar> variable according to
+your specific subnet.</para>
 
 
 </sect2>
 </sect2>
 
 

+ 3 - 4
chapter07/profile.xml

@@ -41,10 +41,9 @@ them properly results in:</para>
 <itemizedlist>
 <itemizedlist>
 <listitem><para>The output of programs translated into the native
 <listitem><para>The output of programs translated into the native
 language</para></listitem>
 language</para></listitem>
-<listitem><para>Correct classification of characters into letters,
-digits and other classes. This is necessary for Bash to properly
-accept non-ASCII characters in command lines in non-English
-locales</para></listitem>
+<listitem><para>Correct classification of characters into letters, digits and
+other classes. This is necessary for <command>bash</command> to properly accept
+non-ASCII characters in command lines in non-English locales</para></listitem>
 <listitem><para>The correct alphabetical sorting order for the
 <listitem><para>The correct alphabetical sorting order for the
 country</para></listitem>
 country</para></listitem>
 <listitem><para>Appropriate default paper size</para></listitem>
 <listitem><para>Appropriate default paper size</para></listitem>

+ 18 - 21
chapter07/setclock.xml

@@ -11,28 +11,25 @@
 <primary sortas="d-setclock">setclock</primary>
 <primary sortas="d-setclock">setclock</primary>
 <secondary>configuring</secondary></indexterm>
 <secondary>configuring</secondary></indexterm>
 
 
-<para>The <command>setclock</command> script reads the time from the hardware clock,
-also known as the BIOS or the Complementary Metal Oxide Semiconductor
-(CMOS) clock. If the hardware clock is set to UTC, this script will convert the hardware clock's time to
-the local time using the <filename>/etc/localtime</filename> file
-(which tells the <command>hwclock</command> program which timezone the
-user is in). There is no way to
-detect whether or not the hardware clock is set to UTC time, so this
-needs to be manually configured.</para>
-
-<para>If you cannot remember whether or not the hardware
-clock is set to UTC time, find out by running
-the <userinput>hwclock --localtime --show</userinput> command. This will tell
-what the current time is according to the hardware clock. If this time
-matches whatever your watch says, then the hardware clock is set to
-local time. If the output from <command>hwclock</command> is not local
-time, chances are it is set to UTC time. Verify this by adding or
-subtracting the proper amount of hours for the timezone to this
-<command>hwclock</command> time. For example, if you live in the MST
+<para>The <command>setclock</command> script reads the time from the hardware
+clock, also known as the BIOS or the Complementary Metal Oxide Semiconductor
+(CMOS) clock. If the hardware clock is set to UTC, this script will convert the
+hardware clock's time to the local time using the
+<filename>/etc/localtime</filename> file (which tells the
+<command>hwclock</command> program which timezone the user is in). There is no
+way to detect whether or not the hardware clock is set to UTC time, so this
+needs to be configured manually.</para>
+
+<para>If you cannot remember whether or not the hardware clock is set to UTC
+time, find out by running the <userinput>hwclock --localtime --show</userinput>
+command. This will display what the current time is according to the hardware
+clock. If this time matches whatever your watch says, then the hardware clock is
+set to local time. If the output from <command>hwclock</command> is not local
+time, chances are it is set to UTC time. Verify this by adding or subtracting
+the proper amount of hours for the timezone to the time shown by
+<command>hwclock</command>. For example, if you are currently in the MST
 timezone, which is also known as GMT -0700, add seven hours to the local
 timezone, which is also known as GMT -0700, add seven hours to the local
-time. Then, account for Daylight Savings Time, which requires
-subtracting an hour (or only add six in the first place) during the summer
-months.</para>
+time.</para>
 
 
 <para>Change the value of the <envar>UTC</envar> variable below
 <para>Change the value of the <envar>UTC</envar> variable below
 to a value of <parameter>0</parameter> (zero) if the hardware clock
 to a value of <parameter>0</parameter> (zero) if the hardware clock

+ 67 - 77
chapter07/udev.xml

@@ -12,25 +12,23 @@
 <secondary>usage</secondary></indexterm>
 <secondary>usage</secondary></indexterm>
 
 
 <para>In <xref linkend="chapter-building-system"/>, we installed the Udev
 <para>In <xref linkend="chapter-building-system"/>, we installed the Udev
-package.  Before we go into the details regarding how this works,
+package. Before we go into the details regarding how this works,
 a brief history of previous methods of handling devices is in
 a brief history of previous methods of handling devices is in
 order.</para>
 order.</para>
 
 
-<para>Linux systems in general traditionally use a static device
-creation method, whereby a great many device nodes are created under
-<filename class="directory">/dev</filename> (sometimes literally
-thousands of nodes), regardless of whether the corresponding hardware
-devices actually exist. This is typically done via a
-<command>MAKEDEV</command> script, which contains a number of
-calls to the <command>mknod</command> program with the relevant major and minor device
-numbers for every possible device that might exist in the world. Using
-the udev method, only those devices which are detected by the kernel
-get device nodes created for them. Because these device nodes will be
-created each time the system boots, they will be stored on a
-<systemitem class="filesystem">tmpfs</systemitem> (a file system that
-resides entirely in memory and does not take up any disk space).
-Device nodes do not require much disk space, so the memory that is
-used is negligible.</para>
+<para>Linux systems in general traditionally use a static device creation
+method, whereby a great many device nodes are created under <filename
+class="directory">/dev</filename> (sometimes literally thousands of nodes),
+regardless of whether the corresponding hardware devices actually exist. This is
+typically done via a <command>MAKEDEV</command> script, which contains a number
+of calls to the <command>mknod</command> program with the relevant major and
+minor device numbers for every possible device that might exist in the world.
+Using the Udev method, only those devices which are detected by the kernel get
+device nodes created for them. Because these device nodes will be created each
+time the system boots, they will be stored on a <systemitem
+class="filesystem">tmpfs</systemitem> file system (a virtual file system that
+resides entirely in system memory). Device nodes do not require much space, so
+the memory that is used is negligible.</para>
 
 
 <sect2>
 <sect2>
 <title>History</title>
 <title>History</title>
@@ -54,46 +52,45 @@ conditions that are inherent in its design and cannot be fixed
 without a substantial revision to the kernel. It has also been marked
 without a substantial revision to the kernel. It has also been marked
 as deprecated due to a lack of recent maintenance.</para>
 as deprecated due to a lack of recent maintenance.</para>
 
 
-<para>With the development of the unstable 2.5 kernel tree, later
-released as the 2.6 series of stable kernels, a new virtual filesystem
-called <systemitem class="filesystem">sysfs</systemitem> came to be.
-The job of <systemitem class="filesystem">sysfs</systemitem> is to
-export a view of the system's structure to userspace processes.  With
-this userspace visible representation, the possibility of seeing a
-userspace replacement for <systemitem
-class="filesystem">devfs</systemitem> became much more
+<para>With the development of the unstable 2.5 kernel tree, later released as
+the 2.6 series of stable kernels, a new virtual filesystem called <systemitem
+class="filesystem">sysfs</systemitem> came to be. The job of <systemitem
+class="filesystem">sysfs</systemitem> is to export a view of the system's
+hardrware configuration to userspace processes. With this userspace-visible
+representation, the possibility of seeing a userspace replacement for
+<systemitem class="filesystem">devfs</systemitem> became much more
 realistic.</para>
 realistic.</para>
+
 </sect2>
 </sect2>
 
 
 <sect2>
 <sect2>
 <title>Udev Implementation</title>
 <title>Udev Implementation</title>
 
 
-<para>The <systemitem class="filesystem">sysfs</systemitem> filesystem
-was mentioned briefly above.  One may wonder how <systemitem
-class="filesystem">sysfs</systemitem> knows about the devices present
-on a system and what device numbers should be used.  Drivers that
-have been compiled into the kernel directly register their objects
-with <systemitem class="filesystem">sysfs</systemitem> as they are
-detected by the kernel.  For drivers compiled as modules, this will
-happen when the module is loaded.  Once the <systemitem
-class="filesystem">sysfs</systemitem> filesystem is mounted (on
-<filename class="directory">/sys</filename>), data which the
+<para>The <systemitem class="filesystem">sysfs</systemitem> filesystem was
+mentioned briefly above. One may wonder how <systemitem
+class="filesystem">sysfs</systemitem> knows about the devices present on a
+system and what device numbers should be used for them. Drivers that have been
+compiled into the kernel directly register their objects with <systemitem
+class="filesystem">sysfs</systemitem> as they are detected by the kernel. For
+drivers compiled as modules, this registration will happen when the module is
+loaded. Once the <systemitem class="filesystem">sysfs</systemitem> filesystem is
+mounted (on <filename class="directory">/sys</filename>), data which the
 built-in drivers registered with <systemitem
 built-in drivers registered with <systemitem
-class="filesystem">sysfs</systemitem> are available to userspace
-processes and to <command>udev</command> for device node creation.</para>
+class="filesystem">sysfs</systemitem> are available to userspace processes and
+to <command>udev</command> for device node creation.</para>
 
 
 <para>The <command>S10udev</command> initscript takes care of creating these
 <para>The <command>S10udev</command> initscript takes care of creating these
-device nodes when Linux is booted. This script starts with registering
-<command>/sbin/udevsend</command> as a hotplug event handler.  Hotplug events
-(discussed below) should not be generated during this stage, but
-<command>udev</command> is registered just in case they do occur.  The
+device nodes when Linux is booted. This script starts by registering
+<command>/sbin/udevsend</command> as a hotplug event handler. Hotplug events
+(discussed below) are not usually generated during this stage, but
+<command>udev</command> is registered just in case they do occur. The
 <command>udevstart</command> program then walks through the <systemitem
 <command>udevstart</command> program then walks through the <systemitem
 class="filesystem">/sys</systemitem> filesystem and creates devices under
 class="filesystem">/sys</systemitem> filesystem and creates devices under
-<filename class="directory">/dev</filename> that match the descriptions.  For
+<filename class="directory">/dev</filename> that match the descriptions. For
 example, <filename>/sys/class/tty/vcs/dev</filename> contains the string
 example, <filename>/sys/class/tty/vcs/dev</filename> contains the string
 <quote>7:0</quote> This string is used by <command>udevstart</command> to create
 <quote>7:0</quote> This string is used by <command>udevstart</command> to create
 <filename>/dev/vcs</filename> with major number <emphasis>7</emphasis> and minor
 <filename>/dev/vcs</filename> with major number <emphasis>7</emphasis> and minor
-<emphasis>0</emphasis>.  The names and permissions of the nodes created under
+<emphasis>0</emphasis>. The names and permissions of the nodes created under
 the <filename class="directory">/dev</filename> directory are configured
 the <filename class="directory">/dev</filename> directory are configured
 according to the rules specified in the files within the <filename
 according to the rules specified in the files within the <filename
 class="directory">/etc/udev/rules.d/</filename> directory. These are numbered in
 class="directory">/etc/udev/rules.d/</filename> directory. These are numbered in
@@ -101,39 +98,34 @@ a similar fashion to the LFS-Bootscripts package. If <command>udev</command>
 can't find a rule for the device it is creating, it will default permissions to
 can't find a rule for the device it is creating, it will default permissions to
 <emphasis>660</emphasis> and ownership to <emphasis>root:root</emphasis>.</para>
 <emphasis>660</emphasis> and ownership to <emphasis>root:root</emphasis>.</para>
 
 
-<para>Once the above stage is complete, all devices that were already
-present and have compiled-in drivers will be available for use. What 
-about those devices that have modular drivers?</para>
+<para>Once the above stage is complete, all devices that were already present
+and have compiled-in drivers will be available for use. This leads us to the
+devices that have modular drivers.</para>
 
 
 <para>Earlier, we mentioned the concept of a <quote>hotplug event
 <para>Earlier, we mentioned the concept of a <quote>hotplug event
-handler.</quote> When a new device connection is detected by the
-kernel, the kernel will generate a hotplug event and look at the file
-<filename>/proc/sys/kernel/hotplug</filename> to find out the
-userspace program that handles the device's connection.  The
-<command>udev</command> initscript registered <command>udevsend</command>
-as this handler. When these hotplug events are generated, the kernel
-will tell <command>udev</command> to check the <filename
-class="directory">/sys</filename> filesystem for the information
+handler.</quote> When a new device connection is detected by the kernel, the
+kernel will generate a hotplug event and look at the file
+<filename>/proc/sys/kernel/hotplug</filename> to determine the userspace program
+that handles the device's connection. The <command>udev</command> bootscript
+registered <command>udevsend</command> as this handler. When these hotplug
+events are generated, the kernel will tell <command>udev</command> to check the
+<filename class="directory">/sys</filename> filesystem for the information
 pertaining to this new device and create the <filename
 pertaining to this new device and create the <filename
 class="directory">/dev</filename> entry for it.</para>
 class="directory">/dev</filename> entry for it.</para>
 
 
-<para>This brings us to one problem that exists with
-<command>udev</command>, and likewise with <systemitem
-class="filesystem">devfs</systemitem> before it. It is commonly
-referred to as the <quote>chicken and egg</quote> problem.  Most Linux
-distributions handle loading modules via entries in
-<filename>/etc/modules.conf</filename>. Access to a device node causes
-the appropriate kernel module to load.  With <command>udev</command>,
-this method will not work because the device node does not exist until
-the module is loaded.  To solve this, the
-<command>S05modules</command> bootscript was added to the
+<para>This brings us to one problem that exists with <command>udev</command>,
+and likewise with <systemitem class="filesystem">devfs</systemitem> before it.
+It is commonly referred to as the <quote>chicken and egg</quote> problem. Most
+Linux distributions handle loading modules via entries in
+<filename>/etc/modules.conf</filename>. Access to a device node causes the
+appropriate kernel module to load. With <command>udev</command>, this method
+will not work because the device node does not exist until the module is loaded.
+To solve this, the <command>S05modules</command> bootscript was added to the
 LFS-Bootscripts package, along with the
 LFS-Bootscripts package, along with the
-<filename>/etc/sysconfig/modules</filename> file.  By
-adding module
-names to the <filename>modules</filename> file, these modules will be
-loaded when the computer is starting up. This allows
-<command>udev</command> to detect the devices and create the
-appropriate device nodes.</para>
+<filename>/etc/sysconfig/modules</filename> file. By adding module names to the
+<filename>modules</filename> file, these modules will be loaded when the
+computer is starts up. This allows <command>udev</command> to detect the devices
+and create the appropriate device nodes.</para>
 
 
 <para>Note that on slower machines or for drivers that create a lot
 <para>Note that on slower machines or for drivers that create a lot
 of device nodes, the process of creating devices may take a few
 of device nodes, the process of creating devices may take a few
@@ -167,14 +159,12 @@ device nodes:</para>
 <para>1) A kernel driver may not export its data to <systemitem
 <para>1) A kernel driver may not export its data to <systemitem
 class="filesystem">sysfs</systemitem>.</para>
 class="filesystem">sysfs</systemitem>.</para>
    
    
-<para>This is most common with third party drivers from outside the
-kernel tree.  These drivers will not end up having their device nodes
-created.  Use the
-<filename>/etc/sysconfig/createfiles</filename> configuration file to
-manually create the devices. Consult the
-<filename>devices.txt</filename> file inside the kernel documentation
-or the documentation for that driver to find the proper major/minor
-numbers.</para>
+<para>This is most common with third party drivers from outside the kernel tree.
+Udev will be unable to automatically create device nodes for such drivers. Use
+the <filename>/etc/sysconfig/createfiles</filename> configuration file to
+manually create the devices. Consult the <filename>devices.txt</filename> file
+inside the kernel documentation or the documentation for that driver to find the
+proper major/minor numbers.</para>
 
 
 <para>2) A non-hardware device is required.  This is most common with
 <para>2) A non-hardware device is required.  This is most common with
 the Advanced Linux Sound Architecture (ALSA) project's Open Sound
 the Advanced Linux Sound Architecture (ALSA) project's Open Sound

+ 27 - 30
chapter07/usage.xml

@@ -11,21 +11,19 @@
 <primary sortas="a-Bootscripts">Bootscripts</primary>
 <primary sortas="a-Bootscripts">Bootscripts</primary>
 <secondary>usage</secondary></indexterm>
 <secondary>usage</secondary></indexterm>
 
 
-<para>Linux uses a special booting facility named SysVinit that is
-based on a concept of <emphasis>run-levels</emphasis>. It can be quite
-different from one system to another, so it cannot be assumed that
-because things worked in &lt;insert distro name&gt;, they should work
-the same in LFS too. LFS has its own way of doing things, but it
-respects generally accepted standards.</para>
-
-<para>SysVinit (which will be referred to as <quote>init</quote> from
-now on) works using a run-levels scheme. There are seven (from 0 to 6)
-run-levels (actually, there are more run-levels, but they are for
-special cases and are generally not used. The init man page describes
-those details), and each one of those corresponds to the actions the
-computer is supposed to perform when it starts up. The default
-run-level is 3. Here are the descriptions of the different run-levels
-as they are implemented:</para>
+<para>Linux uses a special booting facility named SysVinit that is based on a
+concept of <emphasis>run-levels</emphasis>. It can be quite different from one
+system to another, so it cannot be assumed that because things worked in one
+particular Linux distribution, they should work the same in LFS too. LFS has its
+own way of doing things, but it respects generally accepted standards.</para>
+
+<para>SysVinit (which will be referred to as <quote>init</quote> from now on)
+works using a run-levels scheme. There are seven (from 0 to 6) run-levels
+(actually, there are more run-levels, but they are for special cases and are
+generally not used. The init manual page describes those details), and each one
+of those corresponds to the actions the computer is supposed to perform when it
+starts up. The default run-level is 3. Here are the descriptions of the
+different run-levels as they are implemented:</para>
 
 
 <literallayout>0: halt the computer
 <literallayout>0: halt the computer
 1: single-user mode
 1: single-user mode
@@ -37,24 +35,23 @@ as they are implemented:</para>
 
 
 <para>The command used to change run-levels is <command>init
 <para>The command used to change run-levels is <command>init
 <replaceable>[runlevel]</replaceable></command>, where
 <replaceable>[runlevel]</replaceable></command>, where
-<replaceable>[runlevel]</replaceable> is the target run-level. For
-example, to reboot the computer, a user would issue the <command>init
-6</command> command.  The <command>reboot</command> command is an
-alias for it, as is the <command>halt</command> command an alias for
-<command>init 0</command>.</para>
+<replaceable>[runlevel]</replaceable> is the target run-level. For example, to
+reboot the computer, a user could issue the <command>init 6</command> command,
+which is an alias for the <command>reboot</command> command. Likewise,
+<command>init 0</command> is an alias for the <command>halt</command>
+command.</para>
 
 
 <para>There are a number of directories under <filename
 <para>There are a number of directories under <filename
 class="directory">/etc/rc.d</filename> that look like <filename
 class="directory">/etc/rc.d</filename> that look like <filename
-class="directory">rc?.d</filename> (where ? is the number of the
-run-level) and <filename class="directory">rcsysinit.d</filename>, all
-containing a number of symbolic links. Some begin with a
-<emphasis>K</emphasis>, the others begin with an
-<emphasis>S</emphasis>, and all of them have two numbers following the
-initial letter. The K means to stop (kill) a service and the S means
-to start a service. The numbers determine the order in which the
-scripts are run, from 00 to 99&mdash;the lower the number the earlier it
-gets executed. When init switches to another run-level, the
-appropriate services get killed and others get started.</para>
+class="directory">rc?.d</filename> (where ? is the number of the run-level) and
+<filename class="directory">rcsysinit.d</filename>, all containing a number of
+symbolic links. Some begin with a <emphasis>K</emphasis>, the others begin with
+an <emphasis>S</emphasis>, and all of them have two numbers following the
+initial letter. The K means to stop (kill) a service and the S means to start a
+service. The numbers determine the order in which the scripts are run, from 00
+to 99&mdash;the lower the number the earlier it gets executed. When
+<command>init</command> switches to another run-level, the appropriate services
+are either started or stopped, depending on the runlevel chosen.</para>
 
 
 <para>The real scripts are in <filename
 <para>The real scripts are in <filename
 class="directory">/etc/rc.d/init.d</filename>. They do the actual
 class="directory">/etc/rc.d/init.d</filename>. They do the actual

+ 2 - 2
general.ent

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 <?xml version="1.0" encoding="ISO-8859-1"?>
-<!ENTITY version "SVN-20050701">
-<!ENTITY releasedate "July 01, 2005">
+<!ENTITY version "SVN-20050702">
+<!ENTITY releasedate "July 02, 2005">
 <!ENTITY milestone "6.2">
 <!ENTITY milestone "6.2">
 <!ENTITY generic-version "svn"> <!-- Use "svn", "testing", or "x.y[-pre{x}]" -->
 <!ENTITY generic-version "svn"> <!-- Use "svn", "testing", or "x.y[-pre{x}]" -->