source: gnome/add/gdm.xml@ 384039a

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
   "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY gdm-download-http "http://ftp.gnome.org/pub/GNOME/sources/gdm/2.6/gdm-&gdm-version;.tar.bz2">
  <!ENTITY gdm-download-ftp "ftp://ftp.gnome.org/pub/GNOME/sources/gdm/2.6/gdm-&gdm-version;.tar.bz2">
  <!ENTITY gdm-md5sum "8dca7cb1f28d81f60f6e07b3c24288c5">
  <!ENTITY gdm-size "3.2 MB">
  <!ENTITY gdm-buildsize "44 MB">
  <!ENTITY gdm-time "0.48 SBU">
]>

<sect1 id="gdm" xreflabel="GDM-&gdm-version;">
  <?dbhtml filename="gdm.html"?>

  <sect1info>
    <othername>$LastChangedBy$</othername>
    <date>$Date$</date>
  </sect1info>

  <title>GDM-&gdm-version;</title>

  <indexterm zone="gdm">
    <primary sortas="a-GDM">GDM</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to GDM</title>

    <para>The <application>GDM</application> package contains
    <application>GNOME</application>'s Display Manager daemon. This is
    useful for allowing configurable graphical logins.</para>

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>Download (HTTP): <ulink url="&gdm-download-http;"/></para>
      </listitem>
      <listitem>
        <para>Download (FTP): <ulink url="&gdm-download-ftp;"/></para>
      </listitem>
      <listitem>
        <para>Download MD5 sum: &gdm-md5sum;</para>
      </listitem>
      <listitem>
        <para>Download size: &gdm-size;</para>
      </listitem>
      <listitem>
        <para>Estimated disk space required: &gdm-buildsize;</para>
      </listitem>
      <listitem>
        <para>Estimated build time: &gdm-time;</para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">GDM Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para><xref linkend="libgnomeui"/>,
    <xref linkend="scrollkeeper"/> and
    <xref linkend="librsvg"/></para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para><xref linkend="Linux_PAM"/>,
    <xref linkend="tcpwrappers"/> and
    <ulink url="http://www.nsa.gov/selinux/">SELinux</ulink></para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of GDM</title>

    <para>Install <application>GDM</application> by running
    the following commands:</para>

<screen><userinput>groupadd gdm &amp;&amp;
useradd -c "GDM Daemon Owner" -d /dev/null -g gdm -s /bin/bash gdm &amp;&amp;
./configure --prefix=`pkg-config --variable=prefix ORBit-2.0` \
    --libexecdir=`pkg-config --variable=prefix ORBit-2.0`/sbin \
    --sysconfdir=/etc/gnome --localstatedir=/var/lib \
    --with-pam-prefix=/etc &amp;&amp;
make &amp;&amp;
make install</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para><parameter>--sysconfdir=/etc/gnome</parameter>: This command puts
    configuration files in <filename class="directory">/etc/gnome</filename>
    instead of <filename class="directory">$GNOME_PREFIX/etc</filename>.</para>

    <para><parameter>--localstatedir=/var/lib</parameter>: This command
    puts files in <filename class="directory">/var/lib</filename> instead of
    <filename class="directory">$GNOME_PREFIX/var</filename>.</para>

    <para><parameter>--with-pam-prefix=/etc</parameter>: This command puts
    <application>PAM</application> configuration files in
    <filename class="directory">/etc/pam.d</filename> instead of
    <filename class="directory">/etc/gnome</filename>.</para>

  </sect2>

  <sect2 role="configuration">
    <title>Configuring GDM</title>

    <sect3 id="gdm-config">
      <title>Config Files</title>

      <para><filename>/etc/gnome/gdm/gdm.conf</filename></para>

      <indexterm zone="gdm gdm-config">
        <primary sortas="e-etc-gnome-gdm-gdm.conf">/etc/gnome/gdm/gdm.conf</primary>
      </indexterm>

    </sect3>

    <sect3>
      <title>Configuration Information</title>

      <para>The <application>GDM</application> <application>PAM</application>
      config files contain modules not present in a BLFS installation. The
      following commands will replace those files:</para>

<screen role="root"><userinput>cat &gt; /etc/pam.d/gdm &lt;&lt; "EOF"
<literal>auth        required    pam_unix.so
auth        required    pam_nologin.so
account     required    pam_unix.so
password    required    pam_unix.so
session     required    pam_unix.so</literal>
EOF
cat &gt; /etc/pam.d/gdm-autologin &lt;&lt; "EOF"
<literal>auth        required    pam_env.so
auth        required    pam_nologin.so
auth        required    pam_permit.so
account     required    pam_unix.so
password    required    pam_unix.so
session     required    pam_unix.so</literal>
EOF</userinput></screen>

      <indexterm zone="gdm gdm-config">
        <primary sortas="e-etc-pam.d-gdm">/etc/pam.d/gdm</primary>
      </indexterm>

      <indexterm zone="gdm gdm-config">
        <primary
        sortas="e-etc-pam.d-gdm-autologin">/etc/pam.d/gdm-autologin</primary>
      </indexterm>

      <para><command>gdm</command> can be tested by executing it from a
      <systemitem class="username">root</systemitem> console.</para>

    </sect3>

    <sect3  id="gdm-init">
      <title>Boot Script</title>

      <para>To start a graphical login at boot, install the
      <filename>/etc/rc.d/init.d/gdm</filename> init script included in the
      <xref linkend="intro-important-bootscripts"/> package.</para>

      <indexterm zone="gdm gdm-init">
        <primary sortas="f-gdm">gdm</primary>
      </indexterm>

<screen role="root"><userinput>make install-gdm</userinput></screen>

      <para>To autostart with a graphical login, edit
      <filename>/etc/inittab</filename> so that the line containing:</para>

<screen><literal>id:3:initdefault:</literal></screen>

      <para>is changed to:</para>

<screen><literal>id:5:initdefault:</literal></screen>

    </sect3>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>gdm, gdm-binary, gdmXnest, gdmXnestchooser, gdmchooser,
        gdmflexiserver, gdmgreeter, gdmlogin, gdmphotosetup, gdmsetup,
        gdmthemetester, gdm-restart, gdm-safe-restart, gdm-stop,
        gdmconfig, gdmopen, and gdmtranslate</seg>
        <seg>None</seg>
        <seg>Not determined at this time</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="gdm-prog">
        <term><command>gdm</command></term>
        <listitem>
          <para>is a wrapper script to execute the
          <application>GDM</application> binary, the configurable
          <application>GNOME</application> based login prompt.</para>
          <indexterm zone="gdm gdm-prog">
            <primary sortas="b-gdm">gdm</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gdmchooser">
        <term><command>gdmchooser</command></term>
        <listitem>
          <para>is an application for selecting XDMCP enabled hosts on
          the local network.</para>
          <indexterm zone="gdm gdmchooser">
            <primary sortas="b-gdmchooser">gdmchooser</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gdmsetup">
        <term><command>gdmsetup</command></term>
        <listitem>
          <para>is a graphical interface to edit the
          <filename>gdm.conf</filename> file.</para>
          <indexterm zone="gdm gdmsetup">
            <primary sortas="b-gdmsetup">gdmsetup</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gdm-restart">
        <term><command>gdm-restart</command></term>
        <listitem>
          <para>sends the HUP signal to the <application>GDM</application>
          daemon so that it restarts. It's used after the config file
          is edited</para>
          <indexterm zone="gdm gdm-restart">
            <primary sortas="b-gdm-restart">gdm-restart</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gdm-safe-restart">
        <term><command>gdm-safe-restart</command></term>
        <listitem>
          <para>sends the USR1 signal to the <application>GDM</application>
          daemon so that it restarts. It's used after the config file
          is edited.</para>
          <indexterm zone="gdm gdm-safe-restart">
            <primary sortas="b-gdm-safe-restart">gdm-safe-restart</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gdmconfig">
        <term><command>gdmconfig</command></term>
        <listitem>
          <para>is an application for managing the configuration of the
          entire <application>GDM</application> applications suite. It
          handles look and feel, security, XDMCP, GDMchooser and more.</para>
          <indexterm zone="gdm gdmconfig">
            <primary sortas="b-gdmconfig">gdmconfig</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>