Manpages - sd_bus_call_method.3

sd_bus_call_method, sd_bus_call_methodv, sd_bus_call_method_async, sd_bus_call_method_asyncv - Initialize a bus message object and invoke the corresponding D-Bus method call

  #include <systemd/sd-bus.h>

typedef int (*sd_bus_message_handler_t)(sd_bus_message **/m/, void */userdata/, sd_bus_error */ret_error/);*

int sd_bus_call_method(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 */types/, …);*

int sd_bus_call_methodv(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 */types/, va_list ap);*

int sd_bus_call_method_async(sd_bus **/bus/, sd_bus_slot **/slot/, const char */destination/, const char */path/, const char */interface/, const char */member/, sd_bus_message_handler_t callback, void */userdata/, const char */types/, …);*

int sd_bus_call_method_asyncv(sd_bus **/bus/, sd_bus_slot **/slot/, const char */destination/, const char */path/, const char */interface/, const char */member/, sd_bus_message_handler_t callback, void */userdata/, const char */types/, va_list ap);*

sd_bus_call_method() is a convenience function for initializing a bus message object and calling the corresponding D-Bus method. It combines the *sd_bus_message_new_method_call*(3), *sd_bus_message_append*(3) and *sd_bus_call*(3) functions into a single function call.

sd_bus_call_method_async() is a convenience function for initializing a bus message object and calling the corresponding D-Bus method asynchronously. It combines the *sd_bus_message_new_method_call*(3), *sd_bus_message_append*(3) and *sd_bus_call_async*(3) functions into a single function call.

On success, these functions return a non-negative integer. On failure, they return a negative errno-style error code.

These APIs are implemented as a shared library, which can be compiled and linked to with the libsystemd *pkg-config*(1) file.

*systemd*(1), *sd-bus*(3), *sd_bus_message_new_method_call*(3), *sd_bus_message_append*(3), *sd_bus_call*(3), *sd_bus_set_property*(3), *sd_bus_emit_signal*(3)