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Yes, DBUS is specified [1]. There are multiple implementations shipping (dbus reference implementation and dbus-broker), as well as several different client lib

Yes, DBUS is specified [1]. There are multiple implementations shipping (dbus reference implementation and dbus-broker), as well as several different client libraries. As dbus user, or application, you just need some client library. As an operating system, you also need a daemon running, which is routing the messages among all the clients. [1] - https://dbus.freedesktop.org/doc/dbus-specification.html https://dbus.freedesktop.org/doc/dbus-specification.html

eropple 7y ago
So it is--and, in reading, it looks like systemd actually ships their own sd-bus client. Huh. TIL. Thanks.
- m4rtink 7y ago
  IIRC at least part of the reason for sd-bus is the need for using D-Bus between parts of systemd during early boot when "normal" D-Bus is not yet up and running.