systemd sd_bus_slot_get_bus 3 sd_bus_slot_get_bus sd_bus_slot_get_current_handler sd_bus_slot_get_current_message sd_bus_slot_get_current_userdata Query information attached to a bus slot object #include <systemd/sd-bus.h> sd_bus *sd_bus_slot_get_bus sd_bus_slot *slot sd_bus_message_handler_t sd_bus_slot_get_current_handler sd_bus_slot *slot sd_bus_message *sd_bus_slot_get_current_message sd_bus_slot *slot void *sd_bus_slot_get_current_userdata sd_bus_slot *slot sd_bus_slot_get_bus() returns the bus object that message slot is attached to. sd_bus_slot_get_current_handler(), sd_bus_slot_get_current_message() and sd_bus_slot_get_current_userdata() return the current handler, message and userdata respectively of the bus slot is attached to if we're currently executing the callback associated with slot. sd_bus_slot_get_bus() always returns the bus object. On success, sd_bus_slot_get_current_handler(), sd_bus_slot_get_current_message() and sd_bus_slot_get_current_userdata() return the requested object. On failure, they return NULL. sd_bus_slot_get_bus(), sd_bus_slot_get_current_handler(), sd_bus_slot_get_current_message(), and sd_bus_slot_get_current_userdata() were added in version 246. systemd1 sd-bus3