Changeset 16cd0963 for chapter07

Timestamp:

09/20/2022 05:20:58 PM (2 years ago)

Author:

Bruce Dubbs <bdubbs@…>

Branches:

11.3, 11.3-rc1, 12.0, 12.0-rc1, 12.1, 12.1-rc1, 12.2, 12.2-rc1, bdubbs/gcc13, multilib, renodr/libudev-from-systemd, trunk, xry111/arm64, xry111/arm64-12.0, xry111/clfs-ng, xry111/loongarch, xry111/loongarch-12.0, xry111/loongarch-12.1, xry111/loongarch-12.2, xry111/mips64el, xry111/multilib, xry111/pip3, xry111/rust-wip-20221008, xry111/update-glibc

Children:

ab29298

Parents:

cc8e57d

Message:

Adjust instructions for /dev/shm when creating virtual filesystems.
Some host create /dev/shm as a tmpfs. Some have is as
a symlink to a location in another directory. This
change handles both cases.

The change to the sysV bootscripts now creates /dev/shm
as a separate tmpfs from /run. This makes LFS sysV and
systemd versions treat /dev/shm the same.

Location:

chapter07

Files:

• cleanup.xml (modified) (1 diff)
• kernfs.xml (modified) (1 diff)

chapter07/cleanup.xml

@@ -96 +96 @@
     <para>Before making a backup, unmount the virtual file systems:</para>
 
-<screen role="nodump"><userinput>umount $LFS/dev/pts
+<screen role="nodump"><userinput>[ mountpoint -q $LFS/dev/shm ] &amp;&amp; umount $LFS/dev/shm
+umount $LFS/dev/pts
 umount $LFS/{sys,proc,run,dev}</userinput></screen>
 

chapter07/kernfs.xml

@@ -90 +90 @@
       directory needs to be created.</para>
 
+      <para>In other cases <filename>/dev/shm</filename> is a mountpoint 
+      for a tmpfs. In that case the mount of /dev above will only create
+      /dev/shm in the chroot environment as a directory. In this situation
+      we explicitly mount a tmpfs,</para>
+
 <screen><userinput>if [ -h $LFS/dev/shm ]; then
   mkdir -pv $LFS/$(readlink $LFS/dev/shm)
+else
+  mount -t tmpfs -o nosuid,nodev tmpfs $LFS/dev/shm
 fi</userinput></screen>