reactos/lib/ntdll/rtl/callback.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:         See COPYING in the top level directory
   4  * PROJECT:           ReactOS kernel
   5  * PURPOSE:           User-mode callback support
   6  * FILE:              lib/ntdll/rtl/callback.c
   7  * PROGRAMER:         David Welch <welch@cwcom.net>
   8  */
   9
  10 /* INCLUDES *****************************************************************/
  11
  12 #include <ddk/ntddk.h>
  13 #include <string.h>
  14 #include <napi/teb.h>
  15
  16
  17 /* TYPES *********************************************************************/
  18
  19 typedef NTSTATUS STDCALL_FUNC (*CALLBACK_FUNCTION)(PVOID Argument,
  20                                               ULONG ArgumentLength);
  21
  22 /* FUNCTIONS *****************************************************************/
  23
  24 VOID STDCALL
  25 KiUserCallbackDispatcher(ULONG RoutineIndex,
  26                          PVOID Argument,
  27                          ULONG ArgumentLength)
  28 {
  29    PPEB Peb;
  30    NTSTATUS Status;
  31    CALLBACK_FUNCTION Callback;
  32
  33    Peb = NtCurrentPeb();
  34    Callback = (CALLBACK_FUNCTION)Peb->KernelCallbackTable[RoutineIndex];
  35    Status = Callback(Argument, ArgumentLength);
  36    ZwCallbackReturn(NULL, 0, Status);
  37 }