D-Bus の概要

Even though D-Bus was built in LFS, there are some features provided by the package that other BLFS packages need, but their dependencies didn't fit into LFS.

本パッケージは LFS-8.3 において正しくビルドでき動作することが確認されています。


D-Bus の依存パッケージ





テストのために: dbus-glib-0.110, D-Bus Python-1.2.8, PyGObject-3.28.3, and Valgrind-3.13.0; ドキュメント生成のために: Doxygen-1.8.14, xmlto-0.0.28, Ducktype, Yelp Tools

ユーザー情報: http://wiki.linuxfromscratch.org/blfs/wiki/dbus

D-Bus のインストール

以下のコマンドを実行して D-Bus をビルドします。 (configure コマンドに対しては、以下に示すパラメーター以外のものも必要になるかもしれません。 実行する前に ./configure --help を実行して出力内容を確認してください。)

./configure --prefix=/usr                        \
            --sysconfdir=/etc                    \
            --localstatedir=/var                 \
            --enable-user-session                \
            --disable-doxygen-docs               \
            --disable-xml-docs                   \
            --disable-static                     \
            --docdir=/usr/share/doc/dbus-1.12.10 \
            --with-console-auth-dir=/run/console \
            --with-system-pid-file=/run/dbus/pid \
            --with-system-socket=/run/dbus/system_bus_socket &&




Installing the package will override all files installed by D-Bus in LFS. It is critical that nothing uses D-Bus libraries or programs during the installation. The best way to ensure that these libraries are not being used is to run the installation in rescue mode. To switch to rescue mode, run the following command as the root user (from a TTY):

systemctl start rescue.target

root ユーザーになって以下を実行します。

make install

The shared library needs to be moved to /lib, and as a result the .so file in /usr/lib will need to be recreated. Run the following command as the root user:

mv -v /usr/lib/libdbus-1.so.* /lib &&
ln -sfv ../../lib/$(readlink /usr/lib/libdbus-1.so) /usr/lib/libdbus-1.so

If you are using a DESTDIR install, dbus-daemon-launch-helper needs to be fixed afterwards. Issue, as root user:

chown -v root:messagebus /usr/libexec/dbus-daemon-launch-helper &&
chmod -v      4750       /usr/libexec/dbus-daemon-launch-helper

If not in chroot, at this point, you should reload the systemd daemon, and reenter multi-user mode with the following commands (as the root user):

systemctl daemon-reload
systemctl start multi-user.target

The dbus tests cannot be run until after dbus-glib-0.110 has been installed. They must be run as an unprivileged user from a local session with bus address. To run the standard tests issue make check.

If you want to run the unit regression tests, configure requires additional parameters which expose additional functionality in the binaries that are not intended to be used in a production build of D-Bus. If you would like to run the tests, issue the following commands (for the tests, you don't need to build the docs):

make distclean                     &&
./configure --enable-tests         \
            --enable-asserts       \
            --disable-doxygen-docs \
            --disable-xml-docs     &&
make                               &&
make check

The test test-bus.sh is known to fail. There has also been reports that the tests may fail if running inside a Midnight Commander shell. You may get out-of-memory error messages when running the tests. These are normal and can be safely ignored.


--disable-doxygen-docs: This switch disables doxygen documentation build and install, if you have doxygen installed. If doxygen is installed, and you wish to build them, remove this parameter.

--disable-xml-docs: This switch disables html documentation build and install, if you have xmlto installed. If xmlto is installed, and you wish to build them, remove this parameter.

--disable-static: このスイッチはスタティックライブラリをインストールしないようにします。

--enable-user-session: This parameter enables per-user DBus sessions with systemd.

--with-console-auth-dir=/run/console/: This parameter specifies location of the ConsoleKit auth dir.

--with-system-pid-file=/run/dbus/pid: This parameter specifies the location of the PID file.

--with-system-socket=/run/dbus/system_bus_socket: This parameter specifies the location of the system bus socket.

--enable-tests: Build extra parts of the code to support all tests. Do not use on a production build.

--enable-embedded-tests: Build extra parts of the code to support only unit tests. Do not use on a production build.

--enable-asserts: Enable debugging code to run assertions for statements normally assumed to be true. This prevents a warning that '--enable-tests' on its own is only useful for profiling and might not give true results for all tests, but adds its own NOTE that this should not be used in a production build.

D-Bus の設定


/etc/dbus-1/session.conf, /etc/dbus-1/system.conf, /etc/dbus-1/system.d/*


上に示している設定ファイルは編集すべきではありません。 変更が必要な場合は /etc/dbus-1/session-local.conf/etc/dbus-1/system-local.conf に対して必要な変更を加えます。

If any packages install a D-Bus .service file outside of the standard /usr/share/dbus-1/services directory, that directory should be added to the local session configuration. For instance, /usr/local/share/dbus-1/services can be added by performing the following commands as the root user:

cat > /etc/dbus-1/session-local.conf << "EOF"
<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"

  <!-- Search for .service files in /usr/local -->


D-Bus Session Daemon

There are many methods you can use to start a session daemon using the dbus-launch command. Review the dbus-launch man page for details about the available parameters and options. Here are some suggestions and examples:

  • Add dbus-launch to the line in the ~/.xinitrc file that starts your graphical desktop environment.

  • If you use xdm or some other display manager that calls the ~/.xsession file, you can add dbus-launch to the line in your ~/.xsession file that starts your graphical desktop environment. The syntax would be similar to the example in the ~/.xinitrc file.

  • The examples shown previously use dbus-launch to specify a program to be run. This has the benefit (when also using the --exit-with-session parameter) of stopping the session daemon when the specified program is stopped. You can also start the session daemon in your system or personal startup scripts by adding the following lines:

    # Start the D-Bus session daemon
    eval `dbus-launch`

    This method will not stop the session daemon when you exit your shell, therefore you should add the following line to your ~/.bash_logout file:

    # Kill the D-Bus session daemon
  • A hint has been written that provides ways to start scripts using the KDM session manager of KDE. The concepts in this hint could possibly be used with other session managers as well. The hint is located at http://www.linuxfromscratch.org/hints/downloads/files/execute-session-scripts-using-kdm.txt.


A list of the installed files, along with their short descriptions can be found at ../../../../lfs/view/systemd/chapter06/dbus.html#contents-dbus.

最終更新日: 2018-08-19 06:53:19 +0900