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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) 2008-2011 ZenJu (zhnmju123 AT gmx.de) *
// **************************************************************************
#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 "../build_info.h"
namespace shadow
{
/*--------------
|declarations|
--------------*/
//COM needs to be initialized before calling any of these functions! CoInitializeEx/CoUninitialize
typedef size_t ShadowHandle;
//volumeName must end with "\", while shadowVolName does not end with "\"
SHADOWDLL_API
bool createShadowCopy(const wchar_t* volumeName, //[in]
wchar_t* shadowVolName, //[out]
unsigned int shadowBufferLen, //[in]
ShadowHandle* handle, //[out]
wchar_t* errorMessage, //[out]
unsigned int errorBufferLen); //[in]
//don't forget to release the backupHandle after shadow copy is not needed anymore!
SHADOWDLL_API
void releaseShadowCopy(ShadowHandle handle);
//##########################################################################################
/*----------
|typedefs|
----------*/
typedef bool (*CreateShadowCopyFct)(const wchar_t* volumeName,
wchar_t* shadowVolName,
unsigned int shadowBufferLen,
ShadowHandle* handle,
wchar_t* errorMessage,
unsigned int errorBufferLen);
typedef void (*ReleaseShadowCopyFct)(ShadowHandle handle);
/*--------------
|symbol names|
--------------*/
//(use const pointers to ensure internal linkage)
const char createShadowCopyFctName[] = "createShadowCopy";
const char releaseShadowCopyFctName[] = "releaseShadowCopy";
/*---------------
|library names|
---------------*/
namespace impl
{
bool newerThanXP()
{
OSVERSIONINFO osvi = {};
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (::GetVersionEx(&osvi))
return osvi.dwMajorVersion > 5 ||
(osvi.dwMajorVersion == 5 && osvi.dwMinorVersion > 1) ;
//XP has majorVersion == 5, minorVersion == 1
//Server 2003 has majorVersion == 5, minorVersion == 2
//version overview: http://msdn.microsoft.com/en-us/library/ms724834(VS.85).aspx
return false;
}
}
inline
const wchar_t* getDllName()
{
/*
distinguish a bunch of VSS builds: we use XP and Server 2003 implementations...
VSS version and compatibility overview: http://msdn.microsoft.com/en-us/library/aa384627(VS.85).aspx
*/
return impl::newerThanXP() ?
(util::is64BitBuild ?
L"Shadow_Server2003_x64.dll" :
L"Shadow_Server2003_Win32.dll") :
(util::is64BitBuild ?
L"Shadow_XP_x64.dll" :
L"Shadow_XP_Win32.dll");
}
}
#endif //SHADOWCOPY_H
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