This library provides several of the systemd C APIs:
* sd-bus implements an alternative D-Bus client library that is
relatively easy to use, very efficient and supports both classic
D-Bus as well as kdbus as transport backend.
* sd-daemon(3): for system services (daemons) to report their status
to systemd and to make easy use of socket-based activation logic
* sd-event is a generic event loop abstraction that is built around
Linux epoll, but adds features such as event prioritization or
efficient timer handling.
* sd-id128(3): generation and processing of 128-bit IDs
* sd-journal(3): API to submit and query journal log entries
* sd-login(3): APIs to introspect and monitor seat, login session and
user status information on the local system.
Provides