ZwAdjustPrivilegesToken

NTSTATUS __stdcall ZwAdjustPrivilegesToken(
        VOID *TokenHandle,
        UINT8 DisableAllPrivileges,
        _TOKEN_PRIVILEGES *NewState,
        UINT64 BufferLength,
        _TOKEN_PRIVILEGES *PreviousState,
        UINT64 *ReturnLength){
  NTSTATUS result; 
  _disable();
  __readeflags();
  KiServiceInternal();
  return result;
}

Referenced by:

BiAdjustPrivilege
RtlAcquirePrivilege
RtlReleasePrivilege