Source code of Windows XP (NT5)
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//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 2000.
//
// File: W S D P S V C . C P P
//
// Contents: Start/stop Winsock Direct Path Service.
//
// Notes: The service is actually implemented in MS TCP Winsock provider
//
// Author: VadimE 24 Jan 2000
//
//----------------------------------------------------------------------------
#include "pch.h"
#pragma hdrstop
#include "wsdpsvc.h"
#define MSTCP_PROVIDER_DLL TEXT("mswsock.dll")
#define START_WSDP_FUNCTION_NAME "StartWsdpService"
#define STOP_WSDP_FUNCTION_NAME "StopWsdpService"
// MS TCP Winsock provider module handle
HINSTANCE ghMsTcpDll;
// Service start function pointer
typedef INT (WINAPI *PFN_START_WSDP_SVC) (VOID);
PFN_START_WSDP_SVC gpfnStartWsdpSvc;
// Service stop function pointer
typedef VOID (WINAPI *PFN_STOP_WSDP_SVC) (VOID);
PFN_STOP_WSDP_SVC gpfnStopWsdpSvc;
//+---------------------------------------------------------------------------
// StartWsdpService - start WSDP service if running on DTC
//
//
VOID
StartWsdpService (
VOID
)
{
NTSTATUS status;
NT_PRODUCT_TYPE product;
//
// First check if we are running Server build
//
status = RtlGetNtProductType (&product);
if (!NT_SUCCESS (status) ||
(product == NtProductWinNt)) {
return;
}
//
// Load MS TCP provider and get WSDP service entry points
//
ghMsTcpDll = LoadLibrary (MSTCP_PROVIDER_DLL);
if (ghMsTcpDll!=NULL) {
gpfnStartWsdpSvc = (PFN_START_WSDP_SVC) GetProcAddress (
ghMsTcpDll,
START_WSDP_FUNCTION_NAME);
gpfnStopWsdpSvc = (PFN_STOP_WSDP_SVC) GetProcAddress (
ghMsTcpDll,
STOP_WSDP_FUNCTION_NAME);
if (gpfnStartWsdpSvc != NULL && gpfnStopWsdpSvc != NULL) {
//
// Launch the service and return if succeded
//
INT err = (*gpfnStartWsdpSvc)();
if (err==0) {
return;
}
}
//
// Cleanup if anything fails
//
FreeLibrary (ghMsTcpDll);
ghMsTcpDll = NULL;
}
}
//+---------------------------------------------------------------------------
// StopWsdpService - stop WSDP service if it was started
//
//
VOID
StopWsdpService (
VOID
)
{
if (ghMsTcpDll!=NULL) {
//
// Tell the service to stop and unload the provider
//
(*gpfnStopWsdpSvc)();
FreeLibrary (ghMsTcpDll);
ghMsTcpDll = NULL;
}
}