diff options
Diffstat (limited to 'lib/ShadowCopy')
| -rw-r--r-- | lib/ShadowCopy/LockFile.cpp | 44 | ||||
| -rw-r--r-- | lib/ShadowCopy/Shadow_2003.vcxproj | 244 | ||||
| -rw-r--r-- | lib/ShadowCopy/Shadow_XP.vcxproj | 245 | ||||
| -rw-r--r-- | lib/ShadowCopy/dll_main.cpp | 25 | ||||
| -rw-r--r-- | lib/ShadowCopy/shadow.cpp | 187 | ||||
| -rw-r--r-- | lib/ShadowCopy/shadow.h | 93 |
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"> + <ItemGroup Label="ProjectConfigurations"> + <ProjectConfiguration Include="Debug|Win32"> + <Configuration>Debug</Configuration> + <Platform>Win32</Platform> + </ProjectConfiguration> + <ProjectConfiguration Include="Debug|x64"> + <Configuration>Debug</Configuration> + <Platform>x64</Platform> + </ProjectConfiguration> + <ProjectConfiguration Include="Release|Win32"> + <Configuration>Release</Configuration> + <Platform>Win32</Platform> + </ProjectConfiguration> + <ProjectConfiguration Include="Release|x64"> + 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\ 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 |