/* $Id$ */
/** @file
* IPRT - VBoxSupLib.dll, Windows.
*/
/*
* Copyright (C) 2006-2012 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <iprt/nt/nt-and-windows.h>
#include <iprt/path.h>
/**
* The Dll main entry point.
* @remarks The dllexport is for forcing the linker to generate an import
* library, so the the build system doesn't get confused.
*/
extern "C" __declspec(dllexport)
BOOL __stdcall DllMainEntrypoint(HANDLE hModule, DWORD dwReason, PVOID pvReserved)
{
switch (dwReason)
{
/*
* Make sure the DLL isn't ever unloaded.
*/
case DLL_PROCESS_ATTACH:
{
WCHAR wszName[RTPATH_MAX];
SetLastError(NO_ERROR);
if ( GetModuleFileNameW((HMODULE)hModule, wszName, RT_ELEMENTS(wszName)) > 0
&& RtlGetLastWin32Error() == NO_ERROR)
{
int cExtraLoads = 2;
while (cExtraLoads-- > 0)
LoadLibraryW(wszName);
}
break;
}
case DLL_THREAD_ATTACH:
{
#ifdef VBOX_WITH_HARDENING
# ifndef VBOX_WITHOUT_DEBUGGER_CHECKS
/*
* Anti debugging hack that prevents most debug notifications from
* ending up in the debugger.
*/
NTSTATUS rcNt = NtSetInformationThread(GetCurrentThread(), ThreadHideFromDebugger, NULL, 0);
if (!NT_SUCCESS(rcNt))
{
__debugbreak();
return FALSE;
}
# endif
#endif
break;
}
case DLL_THREAD_DETACH:
/* Nothing to do. */
break;
case DLL_PROCESS_DETACH:
/* Nothing to do. */
break;
default:
/* ignore */
break;
}
return TRUE;
}