4.1

6 files changed, 838 insertions, 0 deletions

diff --git a/lib/ShadowCopy/LockFile.cpp b/lib/ShadowCopy/LockFile.cpp
new file mode 100644
index 00000000..7df3ec66
--- /dev/null
+++ b/lib/ShadowCopy/LockFile.cpp
@@ -0,0 +1,44 @@
+// **************************************************************************
+// * 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)                    *
+// **************************************************************************
+
+
+#include <string>
+#include <iostream>
+#define WIN32_LEAN_AND_MEAN
+#include "windows.h"
+
+int wmain(int argc, wchar_t* argv[])
+{
+    if (argc <= 1)
+    {
+        std::wcout << "Please enter the filename to be locked as %1 parameter!" << "\n\n";
+        system("pause");
+        return -1;
+    }
+    std::wstring filename = argv[1];
+
+    //obtain exclusive lock on test file
+    HANDLE hFile = ::CreateFile(filename.c_str(),
+                                GENERIC_READ | GENERIC_WRITE,
+                                FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                NULL,
+                                OPEN_EXISTING,
+                                FILE_FLAG_BACKUP_SEMANTICS,
+                                NULL);
+    if (hFile == INVALID_HANDLE_VALUE)
+    {
+        std::wcout << "Error obtaining exclusive lock on test file: " << filename <<  "\n\n";
+        system("pause");
+        return -1;
+    }
+
+    std::wcout << "File " << filename << " is locked! Press a key to unlock." << "\n\n";
+    system("pause");
+
+    ::CloseHandle(hFile);
+    return 0;
+}
+
diff --git a/lib/ShadowCopy/Shadow_2003.vcxproj b/lib/ShadowCopy/Shadow_2003.vcxproj
new file mode 100644
index 00000000..a893a389
--- /dev/null
+++ b/lib/ShadowCopy/Shadow_2003.vcxproj
@@ -0,0 +1,244 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
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+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
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+    <ProjectName>Server2003</ProjectName>
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+    <ConfigurationType>DynamicLibrary</ConfigurationType>
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+    <WholeProgramOptimization>true</WholeProgramOptimization>
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+    <PlatformToolset>Windows7.1SDK</PlatformToolset>
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+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>Windows7.1SDK</PlatformToolset>
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+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>Windows7.1SDK</PlatformToolset>
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+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>Windows7.1SDK</PlatformToolset>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
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+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">OBJ\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">OBJ\$(ProjectName)_$(Configuration)_$(Platform)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</LinkIncremental>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">OBJ\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">OBJ\$(ProjectName)_$(Configuration)_$(Platform)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</LinkIncremental>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">OBJ\$(ProjectName)_$(Configuration)_$(Platform)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">.\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|x64'">OBJ\$(ProjectName)_$(Configuration)_$(Platform)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</LinkIncremental>
+    <TargetName Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Shadow_$(ProjectName)_$(Platform)</TargetName>
+    <TargetName Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Shadow_$(ProjectName)_$(Platform)</TargetName>
+    <TargetName Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Shadow_$(ProjectName)_$(Platform)</TargetName>
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+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <PrecompiledHeader>
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+      <WarningLevel>Level4</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
+      <DisableSpecificWarnings>4100;4996</DisableSpecificWarnings>
+      <AdditionalIncludeDirectories>../..</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(TargetName)$(TargetExt)</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>$(IntDir)$(TargetName).pdb</ProgramDatabaseFile>
+      <SubSystem>Windows</SubSystem>
+      <ProfileGuidedDatabase>
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+      <PreprocessorDefinitions>_DEBUG;_WINDOWS;_USRDLL;SHADOWDLL_EXPORTS;USE_SHADOW_2003;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
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+      <WarningLevel>Level4</WarningLevel>
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+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
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+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(TargetName)$(TargetExt)</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>$(IntDir)$(TargetName).pdb</ProgramDatabaseFile>
+      <SubSystem>Windows</SubSystem>
+      <ProfileGuidedDatabase>
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+    <BuildLog>
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+    <ClCompile>
+      <Optimization>MaxSpeed</Optimization>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>NDEBUG;_WINDOWS;_USRDLL;SHADOWDLL_EXPORTS;USE_SHADOW_2003;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeader>
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+      <WarningLevel>Level4</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
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+      <DisableSpecificWarnings>4100;4996</DisableSpecificWarnings>
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+    <Link>
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+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <SubSystem>Windows</SubSystem>
+      <OptimizeReferences>true</OptimizeReferences>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+      <ProfileGuidedDatabase>
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+    </Midl>
+    <ClCompile>
+      <Optimization>MaxSpeed</Optimization>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>NDEBUG;_WINDOWS;_USRDLL;SHADOWDLL_EXPORTS;USE_SHADOW_2003;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
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+    <Link>
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+      <SubSystem>Windows</SubSystem>
+      <OptimizeReferences>true</OptimizeReferences>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+      <ProfileGuidedDatabase>
+      </ProfileGuidedDatabase>
+      <ImportLibrary>$(IntDir)$(TargetName).lib</ImportLibrary>
+      <TargetMachine>MachineX64</TargetMachine>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
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+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+      </PrecompiledHeader>
+      <CompileAsManaged Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</CompileAsManaged>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+      </PrecompiledHeader>
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+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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+      <CompileAsManaged Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</CompileAsManaged>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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+      <CompileAsManaged Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</CompileAsManaged>
+    </ClCompile>
+    <ClCompile Include="shadow.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="shadow.h" />
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+  <ItemGroup>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/lib/ShadowCopy/Shadow_XP.vcxproj b/lib/ShadowCopy/Shadow_XP.vcxproj
new file mode 100644
index 00000000..e49e8941
--- /dev/null
+++ b/lib/ShadowCopy/Shadow_XP.vcxproj
@@ -0,0 +1,245 @@
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+    <ProjectConfiguration Include="Release|Win32">
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+    <ProjectConfiguration Include="Release|x64">
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+      <PreprocessorDefinitions>_DEBUG;_WINDOWS;_USRDLL;SHADOWDLL_EXPORTS;USE_SHADOW_XP;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
+      <DisableSpecificWarnings>4100;4996</DisableSpecificWarnings>
+      <AdditionalIncludeDirectories>../..</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(TargetName)$(TargetExt)</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <GenerateDebugInformation>false</GenerateDebugInformation>
+      <SubSystem>Windows</SubSystem>
+      <OptimizeReferences>true</OptimizeReferences>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+      <ProfileGuidedDatabase>
+      </ProfileGuidedDatabase>
+      <ImportLibrary>$(IntDir)$(TargetName).lib</ImportLibrary>
+      <TargetMachine>MachineX64</TargetMachine>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="dll_main.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+      </PrecompiledHeader>
+      <CompileAsManaged Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</CompileAsManaged>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+      </PrecompiledHeader>
+      <CompileAsManaged Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</CompileAsManaged>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+      </PrecompiledHeader>
+      <CompileAsManaged Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</CompileAsManaged>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+      </PrecompiledHeader>
+      <CompileAsManaged Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</CompileAsManaged>
+    </ClCompile>
+    <ClCompile Include="shadow.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="shadow.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <Library Include="XP\lib\$(Platform)\vssapi.lib" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/lib/ShadowCopy/dll_main.cpp b/lib/ShadowCopy/dll_main.cpp
new file mode 100644
index 00000000..3805c99d
--- /dev/null
+++ b/lib/ShadowCopy/dll_main.cpp
@@ -0,0 +1,25 @@
+// **************************************************************************
+// * 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)                    *
+// **************************************************************************
+
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+//optional: add init/teardown logic here
+BOOL APIENTRY DllMain(HINSTANCE hinstDLL,
+                      DWORD     fdwReason,
+                      LPVOID    lpvReserved)
+{
+    switch (fdwReason)
+    {
+        case DLL_PROCESS_ATTACH:
+        case DLL_PROCESS_DETACH:
+        case DLL_THREAD_ATTACH:
+        case DLL_THREAD_DETACH:
+            break;
+    }
+    return TRUE;
+}
diff --git a/lib/ShadowCopy/shadow.cpp b/lib/ShadowCopy/shadow.cpp
new file mode 100644
index 00000000..12e9fa60
--- /dev/null
+++ b/lib/ShadowCopy/shadow.cpp
@@ -0,0 +1,187 @@
+// **************************************************************************
+// * 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)                    *
+// **************************************************************************
+
+#include "shadow.h"
+#include <algorithm>
+#include <string>
+#include <comdef.h>
+#include <zen/com_ptr.h>
+#include <zen/com_error.h>
+
+#define WIN32_LEAN_AND_MEAN
+#include "windows.h"
+
+#ifdef USE_SHADOW_XP
+#include "xp/inc/vss.h"
+#include "xp/inc/vswriter.h"
+#include "xp/inc/vsbackup.h"
+
+#elif defined USE_SHADOW_2003
+#include "Server 2003/inc/vss.h"
+#include "Server 2003/inc/vswriter.h"
+#include "Server 2003/inc/vsbackup.h"
+#else
+adapt!
+#endif
+
+using namespace zen;
+
+
+namespace
+{
+inline
+void copyString(const std::wstring& input, wchar_t* buffer, size_t bufferSize)
+{
+    if (bufferSize > 0)
+    {
+        //size_t endPos = input.copy(buffer, bufferSize - 1);
+        //buffer[endPos] = 0;
+        const size_t maxSize = std::min(input.length(), bufferSize - 1);
+        std::copy(input.begin(), input.begin() + maxSize, buffer);
+        buffer[maxSize] = 0;
+    }
+}
+
+inline
+void writeErrorMsg(const wchar_t* input, HRESULT hr, wchar_t* output, unsigned int outputLen)
+{
+    copyString(generateErrorMsg(input, hr), output, outputLen);
+}
+}
+
+
+bool shadow::createShadowCopy(const wchar_t* volumeName,
+                              wchar_t*		 shadowVolName,
+                              unsigned int   shadowBufferLen,
+                              ShadowHandle*	 handle,
+                              wchar_t*		 errorMessage,
+                              unsigned int	 errorBufferLen)
+{
+    //MessageBox(0, L"backup err", L"", 0); */
+    *handle    = 0;
+    HRESULT hr = NULL;
+
+    ComPtr<IVssBackupComponents> backupComp;
+    if (FAILED(hr = CreateVssBackupComponents(backupComp.init())))
+    {
+        if (hr == E_ACCESSDENIED)
+            writeErrorMsg(L"The caller does not have sufficient backup privileges or is not an administrator.", hr, errorMessage, errorBufferLen);
+        else
+            writeErrorMsg(L"Error calling \"CreateVssBackupComponents\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    if (FAILED(hr = backupComp->InitializeForBackup()))
+    {
+        writeErrorMsg(L"Error calling \"InitializeForBackup\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    if (FAILED(hr = backupComp->SetBackupState(false, false, VSS_BT_FULL)))
+    {
+        writeErrorMsg(L"Error calling \"SetBackupState\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    ComPtr<IVssAsync> vssWriters;
+    if (FAILED(hr = backupComp->GatherWriterMetadata(vssWriters.init())))
+    {
+        //this can happen if XP-version of VSS is used on Windows Vista (which needs at least VSS-Server2003 build)
+        writeErrorMsg(L"Error calling \"GatherWriterMetadata\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    //wait for shadow copy writers to complete
+    if (FAILED(hr = vssWriters->Wait()))
+    {
+        writeErrorMsg(L"Error calling \"vssWriters->Wait\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    vssWriters->QueryStatus(&hr, NULL); //check if the async operation succeeded...
+    if (FAILED(hr))
+    {
+        writeErrorMsg(L"Error calling \"vssWriters->QueryStatus\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    VSS_ID snapshotSetId = {0};
+    if (FAILED(hr = backupComp->StartSnapshotSet(&snapshotSetId)))
+    {
+        writeErrorMsg(L"Error calling \"StartSnapshotSet\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    VSS_ID SnapShotId = {0};
+    if (FAILED(hr = backupComp->AddToSnapshotSet(const_cast<wchar_t*>(volumeName), GUID_NULL, &SnapShotId)))
+    {
+        writeErrorMsg(L"Error calling \"AddToSnapshotSet\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    ComPtr<IVssAsync> vssPrepare;
+    if (FAILED(hr = backupComp->PrepareForBackup(vssPrepare.init())))
+    {
+        writeErrorMsg(L"Error calling \"PrepareForBackup\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    if (FAILED(hr = vssPrepare->Wait()))
+    {
+        writeErrorMsg(L"Error calling \"vssPrepare->Wait\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    vssPrepare->QueryStatus(&hr, NULL); //check if the async operation succeeded...
+    if (FAILED(hr))
+    {
+        writeErrorMsg(L"Error calling \"vssPrepare->QueryStatus\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    ComPtr<IVssAsync> vssDoShadowCopy;
+    if (FAILED(hr = backupComp->DoSnapshotSet(vssDoShadowCopy.init())))
+    {
+        writeErrorMsg(L"Error calling \"DoSnapshotSet\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    if (FAILED(hr = vssDoShadowCopy->Wait()))
+    {
+        writeErrorMsg(L"Error calling \"vssDoShadowCopy->Wait\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    vssDoShadowCopy->QueryStatus(&hr, NULL); //check if the async operation succeeded...
+    if (FAILED(hr))
+    {
+        writeErrorMsg(L"Error calling \"vssDoShadowCopy->QueryStatus\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    VSS_SNAPSHOT_PROP props;
+    if (FAILED(hr = backupComp->GetSnapshotProperties(SnapShotId, &props)))
+    {
+        writeErrorMsg(L"Error calling \"GetSnapshotProperties\".", hr, errorMessage, errorBufferLen);
+        return false;
+    }
+
+    //finally: write volume name of newly created shadow copy
+    copyString(props.m_pwszSnapshotDeviceObject, shadowVolName, shadowBufferLen);
+
+    VssFreeSnapshotProperties(&props);
+
+    *handle = backupComp.release();
+
+    return true;
+}
+
+
+void shadow::releaseShadowCopy(ShadowHandle handle)
+{
+    if (handle)
+        handle->Release();
+}
diff --git a/lib/ShadowCopy/shadow.h b/lib/ShadowCopy/shadow.h
new file mode 100644
index 00000000..0dfd39a9
--- /dev/null
+++ b/lib/ShadowCopy/shadow.h
@@ -0,0 +1,93 @@
+// **************************************************************************
+// * 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 <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
+
+typedef IVssBackupComponents* 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|
+  ---------------*/
+
+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 zen::winServer2003orLater() ?
+           (zen::is64BitBuild ?
+            L"Shadow_Server2003_x64.dll" :
+            L"Shadow_Server2003_Win32.dll") :
+
+               (zen::is64BitBuild ?
+                L"Shadow_XP_x64.dll" :
+                L"Shadow_XP_Win32.dll");
+}
+}
+
+
+
+#endif //SHADOWCOPY_H