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NAME | SYNOPSIS | DESCRIPTION | INTERFACE STABILITY | NOTES | SEE ALSO | NOTES | COLOPHON |
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LIBSYSTEMD(3) libsystemd LIBSYSTEMD(3)
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.
systemd(1), libudev(3), pkg-config(1), Interface Portability and
Stability Promise[1]
1. Interface Portability and Stability Promise
https://systemd.io/PORTABILITY_AND_STABILITY/
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a
bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-08-11.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
systemd 258~rc2 LIBSYSTEMD(3)
Pages that refer to this page: 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), sd-varlink(3), systemd.service(5), systemd.directives(7), systemd.index(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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