sd_bus_get_current_handler

systemd

sd_bus_get_current_message

sd_bus_get_current_slot

sd_bus_get_current_userdata

Query information of the callback a bus object is currently running

#include <systemd/sd-bus.h>

sd_bus_message_handler_t

sd_bus_get_current_handler

sd_bus *

bus

sd_bus_message*

sd_bus_get_current_message

sd_bus *

bus

sd_bus_slot*

sd_bus_get_current_slot

sd_bus *

bus

void*

sd_bus_get_current_userdata

sd_bus *

bus

Description

Whenever sd-bus is about to invoke a user-supplied callback function, it stores the current callback, D-Bus message, slot and userdata pointer and allows these to be queried via sd_bus_get_current_handler(), sd_bus_get_current_message(), sd_bus_get_current_slot() and sd_bus_get_current_userdata(), respectively. If bus cannot be resolved or if execution does not reside in a user-supplied callback of bus, these functions return NULL.

Return Value

On success, these functions return the requested object. On failure, they return NULL.

History

sd_bus_get_current_handler(), sd_bus_get_current_message(), sd_bus_get_current_slot(), and sd_bus_get_current_userdata() were added in version 221.