HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. |  |
SD-BUS(3) sd-busSD-BUS(3)sd-bus - A lightweight D-Bus IPC client library
#include <systemd/sd-bus.h>pkg-config --cflags --libs libsystemd
sd-bus.h is part oflibsystemd(3) and provides an implementation of a D-Bus IPC client. Seehttps://www.freedesktop.org/software/dbus/for more information about D-Bus IPC. Seesd_bus_add_match(3),sd_bus_add_object(3),sd_bus_add_object_manager(3),sd_bus_add_object_vtable(3),sd_bus_add_fallback(3),sd_bus_add_fallback_vtable(3),sd_bus_add_filter(3),sd_bus_add_node_enumerator(3),sd_bus_attach_event(3),sd_bus_call(3),sd_bus_call_async(3),sd_bus_call_method(3),sd_bus_call_method_async(3),sd_bus_can_send(3),sd_bus_close(3),sd_bus_creds_get_pid(3),sd_bus_creds_new_from_pid(3),sd_bus_default(3),sd_bus_emit_interfaces_added(3),sd_bus_emit_interfaces_added_strv(3),sd_bus_emit_interfaces_removed(3),sd_bus_emit_interfaces_removed_strv(3),sd_bus_emit_object_added(3),sd_bus_emit_object_removed(3),sd_bus_emit_properties_changed(3),sd_bus_emit_properties_changed_strv(3),sd_bus_emit_signal(3),sd_bus_emit_signalv(3),sd_bus_emit_signal_to(3),sd_bus_emit_signal_tov(3),sd_bus_enqueue_for_read(3),sd-bus-errors(3),sd_bus_error(3),sd_bus_error_add_map(3),sd_bus_get_address(3),sd_bus_get_allow_interactive_authorization(3),sd_bus_get_bus_id(3),sd_bus_get_creds_mask(3),sd_bus_get_current_handler(3),sd_bus_get_current_message(3),sd_bus_get_current_slot(3),sd_bus_get_current_userdata(3),sd_bus_get_exit_on_disconnect(3),sd_bus_get_fd(3),sd_bus_get_method_call_timeout(3),sd_bus_get_n_queued_read(3),sd_bus_get_name_creds(3),sd_bus_get_name_machine_id(3),sd_bus_get_owner_creds(3),sd_bus_get_property(3),sd_bus_get_property_string(3),sd_bus_get_property_strv(3),sd_bus_get_property_trivial(3),sd_bus_get_scope(3),sd_bus_get_tid(3),sd_bus_get_unique_name(3),sd_bus_interface_name_is_valid(3),sd_bus_is_bus_client(3),sd_bus_is_monitor(3),sd_bus_is_open(3),sd_bus_is_server(3),sd_bus_list_names(3),sd_bus_message_append(3),sd_bus_message_append_array(3),sd_bus_message_append_basic(3),sd_bus_message_append_string_memfd(3),sd_bus_message_append_strv(3),sd_bus_message_at_end(3),sd_bus_message_close_container(3),sd_bus_message_copy(3),sd_bus_message_dump(3),sd_bus_message_enter_container(3),sd_bus_message_exit_container(3),sd_bus_message_get_allow_interactive_authorization(3),sd_bus_message_get_cookie(3),sd_bus_message_get_creds(3),sd_bus_message_get_errno(3),sd_bus_message_get_error(3),sd_bus_message_get_monotonic_usec(3),sd_bus_message_get_sender(3),sd_bus_message_get_signature(3),sd_bus_message_get_type(3),sd_bus_message_new(3),sd_bus_message_new_method_call(3),sd_bus_message_new_method_error(3),sd_bus_message_new_signal(3),sd_bus_message_new_signal_to(3),sd_bus_message_open_container(3),sd_bus_message_peek_type(3),sd_bus_message_read(3),sd_bus_message_read_array(3),sd_bus_message_read_basic(3),sd_bus_message_read_strv(3),sd_bus_message_rewind(3),sd_bus_message_seal(3),sd_bus_message_send(3),sd_bus_message_sensitive(3),sd_bus_message_set_allow_interactive_authorization(3),sd_bus_message_set_destination(3),sd_bus_message_set_expect_reply(3),sd_bus_message_set_sender(3),sd_bus_message_skip(3),sd_bus_message_verify_type(3),sd_bus_negotiate_fds(3),sd_bus_new(3),sd_bus_path_encode(3),sd_bus_pending_method_calls(3),sd_bus_process(3),sd_bus_query_sender_creds(3),sd_bus_query_sender_privilege(3),sd_bus_reply_method_error(3),sd_bus_reply_method_return(3),sd_bus_request_name(3),sd_bus_send(3),sd_bus_send_to(3),sd_bus_set_address(3),sd_bus_set_allow_interactive_authorization(3),sd_bus_set_bus_client(3),sd_bus_set_close_on_exit(3),sd_bus_set_connected_signal(3),sd_bus_set_description(3),sd_bus_set_exit_on_disconnect(3),sd_bus_set_fd(3),sd_bus_set_method_call_timeout(3),sd_bus_set_monitor(3),sd_bus_set_property(3),sd_bus_set_propertyv(3),sd_bus_set_sender(3),sd_bus_set_server(3),sd_bus_set_watch_bind(3)sd_bus_slot_get_current_handler(3),sd_bus_slot_get_current_message(3),sd_bus_slot_get_current_userdata(3),sd_bus_slot_set_description(3),sd_bus_slot_set_destroy_callback(3),sd_bus_slot_set_floating(3),sd_bus_slot_set_userdata(3),sd_bus_start(3),sd_bus_track_add_name(3),sd_bus_track_new(3),sd_bus_wait(3) for more information about the functions available. Thebusctl(1) tool makes the functionality implemented by sd-bus available from the command line.
Functions described here are available as a shared library, which can be compiled against and linked to with thelibsystemd pkg-config(1) file. The code described here usesgetenv(3), which is declared to be not multi-thread-safe. This means that the code calling the functions described here must not callsetenv(3) from a parallel thread. It is recommended to only do calls tosetenv()from an early phase of the program when no other threads have been started.
systemd(1),sd-event(3),busctl(1),sd-varlink(3),dbus-daemon(1),dbus-send(1),pkg-config(1)
This page is part of thesystemd (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 isnot part of the original manual page), send a mail to man-pages@man7.orgsystemd 258~rc2SD-BUS(3)Pages that refer to this page:busctl(1), systemd-stdio-bridge(1), libsystemd(3), sd_bus_add_match(3), sd_bus_add_node_enumerator(3), sd_bus_add_object(3), sd_bus_add_object_manager(3), sd_bus_attach_event(3), sd_bus_call(3), sd_bus_call_method(3), sd_bus_can_send(3), sd_bus_close(3), sd_bus_creds_get_pid(3), sd_bus_creds_new_from_pid(3), sd_bus_default(3), sd_bus_emit_signal(3), sd_bus_enqueue_for_read(3), sd_bus_error(3), sd_bus_error_add_map(3), sd-bus-errors(3), sd_bus_get_current_handler(3), sd_bus_get_fd(3), sd_bus_get_name_creds(3), sd_bus_get_name_machine_id(3), sd_bus_get_n_queued_read(3), sd_bus_interface_name_is_valid(3), sd_bus_is_open(3), sd_bus_list_names(3), sd_bus_message_append(3), sd_bus_message_append_array(3), sd_bus_message_append_basic(3), sd_bus_message_append_string_memfd(3), sd_bus_message_append_strv(3), sd_bus_message_at_end(3), sd_bus_message_copy(3), sd_bus_message_dump(3), sd_bus_message_get_cookie(3), sd_bus_message_get_monotonic_usec(3), sd_bus_message_get_signature(3), sd_bus_message_get_type(3), sd_bus_message_new(3), sd_bus_message_new_method_call(3), sd_bus_message_new_method_error(3), sd_bus_message_new_signal(3), sd_bus_message_open_container(3), sd_bus_message_read(3), sd_bus_message_read_array(3), sd_bus_message_read_basic(3), sd_bus_message_read_strv(3), sd_bus_message_rewind(3), sd_bus_message_seal(3), sd_bus_message_sensitive(3), sd_bus_message_set_destination(3), sd_bus_message_set_expect_reply(3), sd_bus_message_skip(3), sd_bus_message_verify_type(3), sd_bus_negotiate_fds(3), sd_bus_new(3), sd_bus_path_encode(3), sd_bus_pending_method_calls(3), sd_bus_process(3), sd_bus_query_sender_creds(3), sd_bus_reply_method_error(3), sd_bus_reply_method_return(3), sd_bus_request_name(3), sd_bus_send(3), sd_bus_set_address(3), sd_bus_set_close_on_exit(3), sd_bus_set_connected_signal(3), sd_bus_set_description(3), sd_bus_set_exit_on_disconnect(3), sd_bus_set_fd(3), sd_bus_set_method_call_timeout(3), sd_bus_set_property(3), sd_bus_set_sender(3), sd_bus_set_server(3), sd_bus_set_watch_bind(3), sd_bus_slot_get_bus(3), sd_bus_slot_ref(3), sd_bus_slot_set_description(3), sd_bus_slot_set_destroy_callback(3), sd_bus_slot_set_floating(3), sd_bus_slot_set_userdata(3), sd_bus_start(3), sd_bus_track_add_name(3), sd_bus_track_new(3), sd_bus_wait(3), sd-varlink(3), systemd.directives(7), systemd.index(7), systemd-machined.service(8), systemd-soft-reboot.service(8)
HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. | |