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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) ZenJu (zhnmju123 AT gmx DOT de) - All Rights Reserved *
// **************************************************************************
#ifndef SHADOWCOPY_H
#define SHADOWCOPY_H
#ifdef SHADOWDLL_EXPORTS
#define SHADOWDLL_API extern "C" __declspec(dllexport)
#else
#define SHADOWDLL_API extern "C" __declspec(dllimport)
#endif
#include <zen/build_info.h>
#include <zen/win_ver.h>
class IVssBackupComponents;
namespace shadow
{
/*--------------
|declarations|
--------------*/
//COM needs to be initialized before calling any of these functions! CoInitializeEx/CoUninitialize
struct ShadowData;
typedef ShadowData* ShadowHandle;
//volumeName *must* end with "\"
SHADOWDLL_API
ShadowHandle createShadowCopy(const wchar_t* volumeName); //returns nullptr on failure!
//release the backupHandle after shadow copy is not needed anymore!
SHADOWDLL_API
void releaseShadowCopy(ShadowHandle handle);
SHADOWDLL_API
const wchar_t* getShadowVolume(ShadowHandle handle); //never fails, returns shadowVolName, never ending with "\"
//get last error message if any of the functions above fail
SHADOWDLL_API
const wchar_t* getLastError(); //no nullptr check required!
//##########################################################################################
/*----------
|typedefs|
----------*/
typedef ShadowHandle (*FunType_createShadowCopy )(const wchar_t* volumeName);
typedef void (*FunType_releaseShadowCopy)(ShadowHandle handle);
typedef const wchar_t* (*FunType_getShadowVolume )(ShadowHandle handle);
typedef const wchar_t* (*FunType_getLastError)();
/*--------------
|symbol names|
--------------*/
//(use const pointers to ensure internal linkage)
const char funName_createShadowCopy [] = "createShadowCopy";
const char funName_releaseShadowCopy[] = "releaseShadowCopy";
const char funName_getShadowVolume [] = "getShadowVolume";
const char funName_getLastError [] = "getLastError";
/*---------------
|library names|
---------------*/
inline
const wchar_t* getDllName()
{
// distinguish a bunch of VSS builds: we use XP, Server 2003 and Server 2008 R2 implementations...
// VSS version and compatibility overview: http://msdn.microsoft.com/en-us/library/aa384627(VS.85).aspx
if (zen::win7OrLater()) //Windows Server 2008 R2 or Windows 7
return zen::is64BitBuild ?
L"Shadow_Windows7_x64.dll" :
L"Shadow_Windows7_Win32.dll";
//else if (vistaOrLater()) -> skip Windows Server 2008 and Windows Vista
// ;
else if (zen::winServer2003orLater()) //Windows Server 2003 and Windows Server 2003 R2
return zen::is64BitBuild ?
L"Shadow_Server2003_x64.dll" :
L"Shadow_Server2003_Win32.dll";
else //Windows XP
return zen::is64BitBuild ?
L"Shadow_XP_x64.dll" :
L"Shadow_XP_Win32.dll";
}
}
#endif //SHADOWCOPY_H
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