Added tmpfs mount at /dev/shm - Bugzilla bug 562

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2679 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter01/changelog.xml

@@ -6,6 +6,18 @@
 
 <itemizedlist>
 
+<listitem><para>August 26, 2003 [jeremy] - Chapter 06 -
+Creating Directories: Added the creation of the /dev/shm
+directory.</para></listitem>
+
+<listitem><para>August 26, 2003 [jeremy] - Chapter 08 -
+Creating fstab: Added the mount of tmpfs filesystem to
+/dev/shm.</para></listitem>
+
+<listitem><para>August 26, 2003 [jeremy] - Chapter 08 -
+Kernel Installation: Added a reminder to compile tmpfs
+support into the kernel.</para></listitem>
+
 <listitem><para>Upgraded to:
 <itemizedlist>
 <listitem><para>automake-1.7.6</para></listitem>

chapter06/creatingdirs.xml

@@ -6,7 +6,7 @@
 a directory tree. Issuing the following commands will create a more or less
 standard tree:</para>
  
-<para><screen><userinput>mkdir -p /{bin,boot,dev/pts,etc/opt,home,lib,mnt,proc} 
+<para><screen><userinput>mkdir -p /{bin,boot,dev/{pts,shm},etc/opt,home,lib,mnt,proc} 
 mkdir -p /{root,sbin,tmp,usr/local,var,opt}
 for dirname in /usr /usr/local
 &nbsp;&nbsp;&nbsp;&nbsp;do

chapter08/fstab.xml

@@ -15,6 +15,7 @@ following:</para>
 /dev/*LFS*     /           *fs-type*  defaults    1       1
 /dev/*swap*    swap        swap       pri=1       0       0
 proc           /proc       proc       defaults    0       0
+shm            /dev/shm    tmpfs      defaults    0       0
 
 # End /etc/fstab
 <userinput>EOF</userinput></screen></para>
@@ -27,6 +28,10 @@ appropriate values (/dev/hda2, /dev/hda5 and reiserfs for example).</para>
 <para>When adding a reiserfs partition, the <userinput>1 1</userinput> at 
 the end of the line should be replaced with <userinput>0 0</userinput>.</para>
 
+<para>A tmpfs mount is added at /dev/shm to comply with Posix shared memory
+requirements.  For more information, see the file 
+Documentation/filesystems/tmpfs.txt in the kernel source tree.</para>
+
 <para>For more information on the various fields which are in the fstab
 file, see <userinput>man 5 fstab</userinput>.</para>
 

chapter08/kernel-inst.xml

@@ -31,6 +31,10 @@ system to the
 <filename class="directory">$LFS/usr/src/linux-&kernel-version;</filename>
 directory.</para>
 
+<para>It's important to note that to be compliant with Posix shared memory
+requirements, we must enable the tmpfs filesystem option, and mount a tmpfs
+filesystem at /dev/shm.</para>
+
 <para>Verify dependencies and create dependency information files:</para>
 
 <para><screen><userinput>make CC=/opt/gcc-2.95.3/bin/gcc dep</userinput></screen></para>

index.xml

@@ -4,8 +4,8 @@
 
 <!ENTITY book SYSTEM "book/book.xml">
 
-<!ENTITY version "20030819">
+<!ENTITY version "20030826">
-<!ENTITY releasedate "August 19th, 2003">
+<!ENTITY releasedate "August 26th, 2003">
 <!ENTITY nbsp " ">
 
 <!ENTITY ftp-root "ftp://ftp.linuxfromscratch.org">