SD_BUS_SLOT_GET_BUS

Section: sd_bus_slot_get_bus (3)
Updated:
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NAME

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

SYNOPSIS

#include <systemd/sd-bus.h>

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

DESCRIPTION

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.

RETURN VALUE

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.

NOTES

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