D-Bus

関連記事

• kdbus

D-Bus はプロセス間のやりとりを行うためのメッセージバスシステムです。システム全体とユーザーセッション両方で実行できるデーモンと、アプリケーションが D-Bus を使うためのライブラリのセットから構成されています。

dbus is pulled and installed as a dependency of systemd and user session bus is started automatically for each user.

Alternative Implementations

dbus-broker

dbus-broker is a drop-in replacement for the libdbus reference implementation, which aims "to provide high performance and reliability, while keeping compatibility to the D-Bus reference implementation". [1]

To enable dbus-broker as the system bus, first disable the dbus service and then activate the dbus-broker one:

# systemctl disable dbus.service
# systemctl enable dbus-broker.service

To enable as a user bus, run as the desired user:

$ systemctl --user enable dbus-broker.service

Or, to enable for all users, run as root:

# systemctl --global enable dbus-broker.service

Reboot for these settings to take effect.

Tips and tricks

Disable dbus service

You can override dbus services in ~/.local/share/dbus-1/services.

デバッグ

• D-Feet — 使いやすい D-Bus デバッガ GUI ツールです。D-Feet を使うことで実行中のプログラムの D-Bus インターフェイスを調べることができます。

https://wiki.gnome.org/DFeet || d-feet

• QDbusViewer — GUI D-Bus debugger. Can be used to inspect D-Bus services and invoke methods on them.

https://doc.qt.io/qt-5/qdbusviewer.html || qt5-tools

You can also use busctl(1) from systemd.

参照

• D-Bus page at freedesktop.org
• Introduction to D-Bus on freedesktop.org