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<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % general-entities SYSTEM "../general.ent">
%general-entities;
]>
<sect1 id="ch-system-dbus" role="wrap">
<?dbhtml filename="dbus.html"?>
<sect1info condition="script">
<productname>dbus</productname>
<productnumber>&dbus-version;</productnumber>
<address>&dbus-url;</address>
</sect1info>
<title>D-Bus-&dbus-version;</title>
<indexterm zone="ch-system-dbus">
<primary sortas="a-dbus">D-Bus</primary>
</indexterm>
<sect2 role="package">
<title/>
<para>D-Bus is a message bus system, a simple way for applications to talk
to one another. D-Bus supplies both a system daemon (for events such as
"new hardware device added" or "printer queue changed") and a
per-user-login-session daemon (for general IPC needs among user
applications). Also, the message bus is built on top of a general one-to-one
message passing framework, which can be used by any two applications to
communicate directly (without going through the message bus daemon).</para>
<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem>
<seg>&dbus-ch6-sbu;</seg>
<seg>&dbus-ch6-du;</seg>
</seglistitem>
</segmentedlist>
</sect2>
<sect2 role="installation">
<title>Installation of D-Bus</title>
<para>Prepare D-Bus for compilation:</para>
<screen><userinput remap="configure">./configure --prefix=/usr \
--sysconfdir=/etc \
--localstatedir=/var \
--libexecdir=/usr/lib/dbus-1.0 \
--disable-static \
--enable-systemd \
--docdir=/usr/share/doc/dbus-&dbus-version; \
--with-console-auth-dir=/run/console/ \
--with-systemdsystemunitdir=/lib/systemd/system</userinput></screen>
<variablelist>
<title>The meaning of the configure options:</title>
<varlistentry>
<term><parameter>--enable-systemd</parameter></term>
<listitem>
<para>This enables support for authentication check using
Systemd Logind.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>--with-console-auth-dir=/run/console</parameter></term>
<listitem>
<para>This specifies the location of the ConsoleKit auth
directory.</para>
</listitem>
</varlistentry>
</variablelist>
<para>Compile the package:</para>
<screen><userinput remap="make">make</userinput></screen>
<para>This package does come with a testsuite, but it requires several
packages that are not included in LFS.</para>
<para>Install the package:</para>
<screen><userinput remap="install">make install</userinput></screen>
<para>Create a symlink, so that D-Bus and Systemd can use the same
<filename>machine-id</filename> file:</para>
<screen><userinput remap="install">ln -sv /etc/machine-id /var/lib/dbus</userinput></screen>
</sect2>
<sect2 id="contents-dbus" role="content">
<title>Contents of D-Bus</title>
<segmentedlist>
<segtitle>Installed programs</segtitle>
<segtitle>Installed libraries</segtitle>
<segtitle>Installed directories</segtitle>
<seglistitem>
<seg>dbus-cleanup-sockets, dbus-daemon, dbus-launch, dbus-monitor,
dbus-send and dbus-uuidgen</seg>
<seg>libdbus-1.so</seg>
<seg>/etc/dbus-1, /usr/include/dbus-1.0, /usr/lib/dbus-1.0,
/usr/share/dbus-1, /usr/share/doc/dbus-&dbus-version; and
/var/lib/dbus</seg>
</seglistitem>
</segmentedlist>
<variablelist>
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>
<varlistentry id="dbus-cleanup-sockets">
<term><command>dbus-cleanup-sockets</command></term>
<listitem>
<para>Used to clean up leftover sockets in a directory.</para>
<indexterm zone="ch-system-dbus dbus-cleanup-sockets">
<primary sortas="b-dbus-cleanup-sockets">dbus-cleanup-sockets</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="dbus-daemon">
<term><command>dbus-daemon</command></term>
<listitem>
<para>The D-Bus message bus daemon.</para>
<indexterm zone="ch-system-dbus dbus-daemon">
<primary sortas="b-dbus-daemon">dbus-daemon</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="dbus-launch">
<term><command>dbus-launch</command></term>
<listitem>
<para>Starts <command>dbus-daemon</command> from a shell
script.</para>
<indexterm zone="ch-system-dbus dbus-launch">
<primary sortas="b-dbus-launch">dbus-launch</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="dbus-monitor">
<term><command>dbus-monitor</command></term>
<listitem>
<para>Monitors messages passing through a D-Bus message bus.</para>
<indexterm zone="ch-system-dbus dbus-monitor">
<primary sortas="b-dbus-monitor">dbus-monitor</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="dbus-send">
<term><command>dbus-send</command></term>
<listitem>
<para>Sends a message to a D-Bus message bus.</para>
<indexterm zone="ch-system-dbus dbus-send">
<primary sortas="b-dbus-send">dbus-send</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="dbus-uuidgen">
<term><command>dbus-uuidgen</command></term>
<listitem>
<para>Generates a universally unique ID.</para>
<indexterm zone="ch-system-dbus dbus-uuidgen">
<primary sortas="b-dbus-uuidgen">dbus-uuidgen</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="libdbus">
<term><filename class="libraryfile">libdbus-1.so</filename></term>
<listitem>
<para>Contains API functions used to communicate with the D-Bus
message bus.</para>
<indexterm zone="ch-system-dbus libdbus">
<primary sortas="c-libdbus">libdbus</primary>
</indexterm>
</listitem>
</varlistentry>
</variablelist>
</sect2>
</sect1>
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