User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |

---

   sd_bus_get_current_userdata    ( 3 )

---

---

Имя (Name)

sd_bus_get_current_handler, 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

---

Синопсис (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_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);

---

Описание (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.

---

Возвращаемое значение (Return value)

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

---

Примечание (Note)

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

---

Смотри также (See also)

systemd(1), sd-bus(3)

---