Changeset 1b40540

Timestamp:

08/16/2013 02:53:28 AM (11 years ago)

Author:

Bryan Kadzban <bryan@…>

Branches:

10.0, 10.0-rc1, 10.1, 10.1-rc1, 11.0, 11.0-rc1, 11.0-rc2, 11.0-rc3, 11.1, 11.1-rc1, 11.2, 11.2-rc1, 11.3, 11.3-rc1, 12.0, 12.0-rc1, 12.1, 12.1-rc1, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.0, 8.1, 8.2, 8.3, 8.4, 9.0, 9.1, arm, bdubbs/gcc13, ml-11.0, multilib, renodr/libudev-from-systemd, s6-init, trunk, xry111/arm64, xry111/arm64-12.0, xry111/clfs-ng, xry111/lfs-next, xry111/loongarch, xry111/loongarch-12.0, xry111/loongarch-12.1, xry111/mips64el, xry111/pip3, xry111/rust-wip-20221008, xry111/update-glibc

Children:

39689b2, b5b97081

Parents:

7cb5659

Message:

Add explanatory text for new devpts mount options

git-svn-id: ​http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10318 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

Files:

• chapter01/changelog.xml (modified) (1 diff)
• chapter06/kernfs.xml (modified) (1 diff)

chapter01/changelog.xml

@@ -40 +40 @@
       <itemizedlist>
         <listitem>
+          <para>[bryan] - Add explanation for new devpts mount
+          options</para>
+        </listitem>
+        <listitem>
           <para>[bdubbs] - Update several pages to fix regression
           test failures.</para>

chapter06/kernfs.xml

@@ -73 +73 @@
 mount -vt sysfs sysfs $LFS/sys</userinput></screen>
 
+    <variablelist>
+      <title>The meaning of the mount options for devpts:</title>
+
+      <varlistentry>
+        <term><parameter>gid=5</parameter></term>
+        <listitem>
+          <para>This ensures that all devpts-created device nodes are owned by
+          group ID 5.  This is the ID we will use later on for the <systemitem
+          class="groupname">tty</systemitem> group.  We use the group ID instead
+          of a name, since the host system might use a different ID for its
+          <systemitem class="groupname">tty</systemitem> group.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><parameter>mode=0620</parameter></term>
+        <listitem>
+          <para>This ensures that all devpts-created device nodes have mode 0620
+          (user readable and writable, group writable).  Together with the
+          option above, this ensures that devpts will create device nodes that
+          meet the requirements of grantpt(), meaning the Glibc
+          <command>pt_chown</command> helper binary (which is not installed by
+          default) is not necessary.</para>
+        </listitem>
+      </varlistentry>
+
+    </variablelist>
+
       <para>In some host systems, <filename>/dev/shm</filename> is a
       symbolic link to <filename class="directory">/run/shm</filename>.