lfs-book-zh_CN/chapter06/dbus.xml

<?xml version="1.0" encoding="UTF-8"?>
<!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" revision="systemd">
  <?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-->
    <para>D-bus 是一个消息总线系统，即应用程序之间互相通信的一种简单方式。
    D-Bus 提供一个系统守护进程（负责 <quote>添加了新硬件</quote>
    或 <quote>打印队列发生改变</quote> 等事件），
    并对每个用户登录会话提供一个守护进程
    （负责一般用户程序的进程间通信）。
    另外，消息总线被构建在一个通用的一对一消息传递网络上，
    它可以被任意两个程序用于直接通信（不需通过消息总线守护进程）。</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>安装 D-Bus</title>

    <para>准备安装 D-Bus：</para>

<screen><userinput remap="configure">./configure --prefix=/usr                       \
            --sysconfdir=/etc                   \
            --localstatedir=/var                \
            --disable-static                    \
            --disable-doxygen-docs              \
            --disable-xml-docs                  \
            --docdir=/usr/share/doc/dbus-&dbus-version; \
            --with-console-auth-dir=/run/console</userinput></screen>

    <variablelist>
      <title>配置选项的含义：</title>

      <varlistentry>
        <term><parameter>--with-console-auth-dir=/run/console</parameter></term>
        <listitem>
          <para>该选项指定 ConsoleKit 认证目录位置。</para>
        </listitem>
      </varlistentry>

    </variablelist>

    <para>编译该软件包：</para>

<screen><userinput remap="make">make</userinput></screen>

    <para>该软件包有测试套件，但需要 LFS 没有包含的一些软件包。
    	阅读 BLFS 手册中的
		<ulink url="&blfs-book;general/dbus.html"/>，
		以查阅运行测试套件的说明。</para>

    <para>安装该软件包：</para>

<screen><userinput remap="install">make install</userinput></screen>

    <para>需要将共享库移动到
    <filename class="directory">/lib</filename>，因此
    <filename class="directory">/usr/lib</filename> 中的
	<filename class="extension">.so</filename> 符号链接需要重新建立：</para>

<screen><userinput remap="install">mv -v /usr/lib/libdbus-1.so.* /lib
ln -sfv ../../lib/$(readlink /usr/lib/libdbus-1.so) /usr/lib/libdbus-1.so</userinput></screen>

    <para>创建符号链接，使 D-Bus 和 systemd 使用同样的
    <filename>machine-id</filename> 文件：</para>

<screen><userinput remap="install">ln -sfv /etc/machine-id /var/lib/dbus</userinput></screen>

  </sect2>

  <sect2 id="contents-dbus" role="content">
    <title>D-Bus 的内容</title>

    <segmentedlist>
      <segtitle>安装的程序</segtitle>
      <segtitle>安装的库</segtitle>
      <segtitle>安装的目录</segtitle>

      <seglistitem>
        <seg>dbus-cleanup-sockets, dbus-daemon, dbus-launch, dbus-monitor,
        dbus-run-session, dbus-send, dbus-test-tool, 
        dbus-update-activation-environment, 以及 dbus-uuidgen</seg>
        <seg>libdbus-1.{a,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;,
        以及 /var/lib/dbus</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">简要描述</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="dbus-cleanup-sockets">
        <term><command>dbus-cleanup-sockets</command></term>
        <listitem>
          <para>用于清理目录中遗留的套接字</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>D-Bus 消息总线守护程序</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>从 shell 脚本启动 <command>dbus-daemon</command></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>监视通过一个 D-Bus 消息总线的消息</para>
          <indexterm zone="ch-system-dbus dbus-monitor">
            <primary sortas="b-dbus-monitor">dbus-monitor</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="dbus-run-session">
        <term><command>dbus-run-session</command></term>
        <listitem>
          <para>从 shell 脚本启动一个 <command>dbus-daemon</command>
			  的会话总线实例，并在该会话中启动给定程序</para>
          <indexterm zone="ch-system-dbus dbus-run-session">
            <primary sortas="b-dbus-run-session">dbus-run-session</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="dbus-send">
        <term><command>dbus-send</command></term>
        <listitem>
          <para>向 D-Bus 消息总线发送消息</para>
          <indexterm zone="ch-system-dbus dbus-send">
            <primary sortas="b-dbus-send">dbus-send</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="dbus-test-tool">
        <term><command>dbus-test-tool</command></term>
        <listitem>
          <para>一个帮助软件包测试
          <application>D-Bus</application> 的工具</para>
          <indexterm zone="ch-system-dbus dbus-test-tool">
            <primary sortas="b-dbus-test-tool">dbus-test-tool</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <!-- This is a very long command name. Excuse the long <primary> statement below. -->
      <varlistentry id="dbus-update-activation-environment">
        <term><command>dbus-update-activation-environment</command></term>
        <listitem>
          <para>更新将会为 <application> D-Bus </application>
			  会话服务设置的环境变量</para>
          <indexterm zone="ch-system-dbus dbus-update-activation-environment">
            <primary sortas="b-dbus-update-activation-environment">dbus-update-activation-environment</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="dbus-uuidgen">
        <term><command>dbus-uuidgen</command></term>
        <listitem>
          <para>产生通用唯一识别码</para>
          <indexterm zone="ch-system-dbus dbus-uuidgen">
            <primary sortas="b-dbus-uuidgen">dbus-uuidgen</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libdbus-1">
        <term><filename class="libraryfile">libdbus-1</filename></term>
        <listitem>
          <para>包含用于和 D-Bus 消息总线通信的 API 函数</para>
          <indexterm zone="ch-system-dbus libdbus-1">
            <primary sortas="c-libdbus-1">libdbus-1</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>