Changeset 27373006

Timestamp:

08/01/2019 07:17:08 PM (4 years ago)

Author:

Bruce Dubbs <bdubbs@…>

Branches:

10.0, 10.1, 11.0, 11.1, 11.2, 11.3, 12.0, 9.0, 9.1, kea, ken/inkscape-core-mods, lazarus, lxqt, plabs/python-mods, qt5new, trunk, upgradedb, xry111/intltool, xry111/soup3, xry111/test-20220226, xry111/xf86-video-removal

Children:

9fffa917

Parents:

d9951ba

Message:

Modify xorg-server and xinit instructions to
avoid using the suid bit on the Xorg application. Add a note
to xinit on why using Xorg with the suid bit set may be useful.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@21892 af4574ff-66df-0310-9fd7-8a98e5e911e0

Files:

• general.ent (modified) (1 diff)
• introduction/welcome/changelog.xml (modified) (1 diff)
• x/installing/xinit.xml (modified) (2 diffs)
• x/installing/xorg-server.xml (modified) (1 diff)

general.ent

@@ -1 +1 @@
 <!-- $LastChangedBy$ $Date$ -->
 
-<!ENTITY day          "31">                   <!-- Always 2 digits -->
-<!ENTITY month        "07">                   <!-- Always 2 digits -->
+<!ENTITY day          "01">                   <!-- Always 2 digits -->
+<!ENTITY month        "08">                   <!-- Always 2 digits -->
 <!ENTITY year         "2019">
 <!ENTITY copyrightdate "2001-&year;">
 <!ENTITY copyholder   "The BLFS Development Team">
 <!ENTITY version      "&year;-&month;-&day;">
-<!ENTITY releasedate  "July 31st, &year;">
+<!ENTITY releasedate  "August 1st, &year;">
 <!ENTITY pubdate      "&year;-&month;-&day;"> <!-- metadata req. by TLDP -->
 <!ENTITY blfs-version "svn">                  <!-- svn|[release #] -->

introduction/welcome/changelog.xml

@@ -44 +44 @@
 
     <listitem>
-      <para>July 30th, 2019</para>
+      <para>August 1st, 2019</para>
+      <itemizedlist>
+        <listitem>
+          <para>[bdubbs] - Modify xorg-server and xinit instructions to 
+          avoid using the suid bit on the Xorg application.  Add a note
+          to xinit on why using Xorg with the suid bit set may be useful.
+          </para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
+    <listitem>
+      <para>July 31st, 2019</para>
       <itemizedlist>
         <listitem>

x/installing/xinit.xml

@@ -82 +82 @@
     <title>Installation of xinit</title>
 
-    <para revision='sysv'>First, modify <command>startx</command>, hence the X
-    session starts on the first unused virtual terminal, which normally is
-    vt7:</para>
-    <!--Apparently, this should not be done for systemd systems-->
-
-<screen revision='sysv'><userinput>sed -e '/$serverargs $vtarg/ s/serverargs/: #&amp;/' \
-    -i startx.cpp</userinput></screen>
-
-    <note revision='sysv'>
-      <para>
-        If you have already installed this package without the sed above, there
-        is no need to reinstall. Just modify the installed
-        <command>startx</command>, issuing, as the <systemitem
-        class="username">root</systemitem> user:
-        <command>sed -i '/$serverargs $vtarg/ s/serverargs/: #&amp;/'
-        $XORG_PREFIX/bin/startx</command>
-      </para>
-    </note>
-
     <para>Install <application>xinit</application> by running the
     following commands:</para>
@@ -114 +95 @@
 <screen role="root"><userinput>make install &amp;&amp;
 ldconfig</userinput></screen>
+
+    <note revision='sysv'>
+
+      <para>If starting Xorg from the command line, the default instructions
+      above starts Xorg on the current virtual terminal.  It may be convenient
+      to see Xorg and associated application messages on the current virtual
+      terminal, normally tty1, and start the graphical environment on the first
+      available unused virtual terminal, normally tty7.  To do this, set the suid bit
+      on the Xorg application as the  <systemitem
+      class="username">root</systemitem> user:</para>
+     
+<screen><userinput>chmod u+s $XORG_PREFIX/libexec/Xorg</userinput></screen>
+
+      <para>At this point you can start Xorg on virtual terminal 7 with 
+      <command>startx &lt;client arguments&gt; -- vt7</command>.  Now
+      you can toggle between tty1 and tty7 with the Ctrl-Alt-F1 and 
+      Ctrl-Alt-F7 key combinations.</para>
+      
+      <para>To automatically start Xorg on the first available virtual terminal,
+      modify the <command>startx</command> script as the  <systemitem
+      class="username">root</systemitem> user with:</para>
+      
+<screen><userinput>sed -e '/$serverargs $vtarg/ s/serverargs/: #&amp;/' $XORG_PREFIX/bin/startx</userinput></screen>
+
+      <para>After this change, the virtual terminal does not need to be 
+      specified on the startx command line.</para>
+
+    </note>
 
   </sect2>

x/installing/xorg-server.xml

@@ -182 +182 @@
       legacy driver support on rootless xserver systems.
     </para>
-<!--
-    <para>
-      <option>- -disable-systemd-logind - -enable-install-setuid</option>:
-      These switches disable <phrase revision="systemd">systemd-logind</phrase>
-      <phrase revision="sysv">elogind</phrase> integration and restore the
-      setuid bit to the Xorg executable, allowing Xorg Server to work
-      without having the <phrase revision="systemd">systemd</phrase>
+
+    <para>
+      <option>--disable-systemd-logind</option>:
+      This switch disables <phrase revision="systemd">systemd-logind</phrase>
+      <phrase revision="sysv">elogind</phrase> integration allowing Xorg Server
+      to work without having the <phrase revision="systemd">systemd</phrase>
       <phrase revision="elogind">elogind</phrase> PAM module configured.
     </para>
--->
+
+    <para>
+      <option>--enable-install-setuid</option>:
+      This switch restores the setuid bit to the Xorg executable allowing Xorg
+      Server to work with a virtual terminal designated on the
+      <command>startx</command> command line.
+    </para>
+
     <para revision="sysv">
       <command>cat &gt;&gt; /etc/sysconfig/createfiles...</command>: This