libsystemd — Functions for implementing services and interacting with systemd
#include <systemd/sd-bus.h>
#include <systemd/sd-daemon.h>
#include <systemd/sd-device.h>
#include <systemd/sd-event.h>
#include <systemd/sd-gpt.h>
#include <systemd/sd-hwdb.h>
#include <systemd/sd-id128.h>
#include <systemd/sd-journal.h>
#include <systemd/sd-json.h>
#include <systemd/sd-login.h>
#include <systemd/sd-messages.h>
#include <systemd/sd-path.h>
#include <systemd/sd-varlink.h>
pkg-config --cflags --libs libsystemd
The libsystemd library provides functions that allow interacting with various
interfaces provided by the
systemd(1) service
manager, as well as various other functions and constants useful for implementing services in
general.
See sd-bus(3), sd-bus-errors(3), sd-daemon(3), sd-device(3), sd-event(3), sd-hwdb(3), sd-id128(3), sd-journal(3), sd-json(3), sd-login(3) and sd-varlink(3) for information about different parts of the library interface.
Strict backwards-compatibility is maintained for the API (application programming interface) and ABI (application binary interface). Symbol versioning is used, with symbols only added and never removed.
Functions described here are available as a shared
library, which can be compiled against and linked to with the
libsystemd pkg-config(1)
file.
The code described here uses
getenv(3),
which is declared to be not multi-thread-safe. This means that the code calling the functions described
here must not call
setenv(3)
from a parallel thread. It is recommended to only do calls to setenv()
from an early phase of the program when no other threads have been started.