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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | HISTORY | SEE ALSO | COLOPHON |
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SD_BUS_SET_PROPERTY(3) sd_bus_set_property SD_BUS_SET_PROPERTY(3)
sd_bus_set_property, sd_bus_set_propertyv, sd_bus_get_property,
sd_bus_get_property_trivial, sd_bus_get_property_string,
sd_bus_get_property_strv - Set or query D-Bus service properties
#include <systemd/sd-bus.h>
int sd_bus_set_property(sd_bus *bus, const char *destination,
const char *path, const char *interface,
const char *member,
sd_bus_error *ret_error, const char *type,
...);
int sd_bus_set_propertyv(sd_bus *bus, const char *destination,
const char *path, const char *interface,
const char *member,
sd_bus_error *ret_error,
const char *type, va_list ap);
int sd_bus_get_property(sd_bus *bus, const char *destination,
const char *path, const char *interface,
const char *member,
sd_bus_error *ret_error,
sd_bus_message **reply, const char *type);
int sd_bus_get_property_trivial(sd_bus *bus,
const char *destination,
const char *path,
const char *interface,
const char *member,
sd_bus_error *ret_error,
char type, void *ret_ptr);
int sd_bus_get_property_string(sd_bus *bus,
const char *destination,
const char *path,
const char *interface,
const char *member,
sd_bus_error *ret_error,
char **ret);
int sd_bus_get_property_strv(sd_bus *bus, const char *destination,
const char *path,
const char *interface,
const char *member,
sd_bus_error *ret_error,
char ***ret);
These functions set or query D-Bus properties. D-Bus properties
are service fields exposed via the org.freedesktop.DBus.Properties
interface. Under the hood, these functions call methods of the
org.freedesktop.DBus.Properties interface and as a result their
semantics are similar to sd_bus_call_method(3).
sd_bus_set_property() sets a D-Bus property. If setting the
property fails or an internal error occurs, an error is returned
and an extended description of the error is optionally stored in
ret_error if it is not NULL. type and the arguments that follow
it describe the new value of the property and must follow the
format described in sd_bus_message_append(3).
sd_bus_set_propertyv() is equivalent to sd_bus_set_property(),
except that it is called with a "va_list" instead of a variable
number of arguments.
sd_bus_get_property() queries a D-Bus property. If retrieving the
property fails or an internal error occurs, an error is returned
and an extended description of the error is optionally stored in
ret_error if it is not NULL. On success, the property is stored in
reply. type describes the property type and must follow the
format described in sd_bus_message_append(3).
sd_bus_get_property_trivial(), sd_bus_get_property_string() and
sd_bus_get_property_strv() are shorthands for
sd_bus_get_property() that are used to query basic, string and
string vector properties respectively. The caller is responsible
for freeing the string and string vector results stored in ret by
sd_bus_get_property_string() and sd_bus_get_property_strv().
On success, these functions return a non-negative integer. On
failure, they return a negative errno-style error code.
Errors
See the sd_bus_call_method(3) man page for a list of possible
errors.
Functions described here are available as a shared library, which
can be compiled against and linked to with the
libsystemd pkg-config(1) file.
All functions listed here are thread-agnostic and only a single
thread may operate on a given object at any given time. Different
threads may access the same object at different times. Multiple
independent objects may be used from different threads in
parallel.
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.
sd_bus_set_property(), sd_bus_set_propertyv(),
sd_bus_get_property(), sd_bus_get_property_trivial(),
sd_bus_get_property_string(), and sd_bus_get_property_strv() were
added in version 246.
systemd(1), sd-bus(3), sd_bus_call_method(3)
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 2026-08-04. (At that
time, the date of the most recent commit that was found in the
repository was 2026-08-03.) 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
man-pages@man7.org
systemd 262~devel SD_BUS_SET_PROPERTY(3)
Pages that refer to this page: sd-bus(3), sd_bus_call_method(3), systemd.directives(7), systemd.index(7)
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HTML rendering created 2026-09-09 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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