diff options
Diffstat (limited to 'qemu/qga/vss-win32/provider.cpp')
| -rw-r--r-- | qemu/qga/vss-win32/provider.cpp | 534 |
1 files changed, 0 insertions, 534 deletions
diff --git a/qemu/qga/vss-win32/provider.cpp b/qemu/qga/vss-win32/provider.cpp deleted file mode 100644 index d977393e3..000000000 --- a/qemu/qga/vss-win32/provider.cpp +++ /dev/null @@ -1,534 +0,0 @@ -/* - * QEMU Guest Agent win32 VSS Provider implementations - * - * Copyright Hitachi Data Systems Corp. 2013 - * - * Authors: - * Tomoki Sekiyama <tomoki.sekiyama@hds.com> - * - * This work is licensed under the terms of the GNU GPL, version 2 or later. - * See the COPYING file in the top-level directory. - */ - -#include "qemu/osdep.h" -#include "vss-common.h" -#include "inc/win2003/vscoordint.h" -#include "inc/win2003/vsprov.h" - -#define VSS_TIMEOUT_MSEC (60*1000) - -static long g_nComObjsInUse; -HINSTANCE g_hinstDll; - -/* VSS common GUID's */ - -const CLSID CLSID_VSSCoordinator = { 0xE579AB5F, 0x1CC4, 0x44b4, - {0xBE, 0xD9, 0xDE, 0x09, 0x91, 0xFF, 0x06, 0x23} }; -const IID IID_IVssAdmin = { 0x77ED5996, 0x2F63, 0x11d3, - {0x8A, 0x39, 0x00, 0xC0, 0x4F, 0x72, 0xD8, 0xE3} }; - -const IID IID_IVssHardwareSnapshotProvider = { 0x9593A157, 0x44E9, 0x4344, - {0xBB, 0xEB, 0x44, 0xFB, 0xF9, 0xB0, 0x6B, 0x10} }; -const IID IID_IVssSoftwareSnapshotProvider = { 0x609e123e, 0x2c5a, 0x44d3, - {0x8f, 0x01, 0x0b, 0x1d, 0x9a, 0x47, 0xd1, 0xff} }; -const IID IID_IVssProviderCreateSnapshotSet = { 0x5F894E5B, 0x1E39, 0x4778, - {0x8E, 0x23, 0x9A, 0xBA, 0xD9, 0xF0, 0xE0, 0x8C} }; -const IID IID_IVssProviderNotifications = { 0xE561901F, 0x03A5, 0x4afe, - {0x86, 0xD0, 0x72, 0xBA, 0xEE, 0xCE, 0x70, 0x04} }; - -const IID IID_IVssEnumObject = { 0xAE1C7110, 0x2F60, 0x11d3, - {0x8A, 0x39, 0x00, 0xC0, 0x4F, 0x72, 0xD8, 0xE3} }; - - -void LockModule(BOOL lock) -{ - if (lock) { - InterlockedIncrement(&g_nComObjsInUse); - } else { - InterlockedDecrement(&g_nComObjsInUse); - } -} - -/* Empty enumerator for VssObject */ - -class CQGAVSSEnumObject : public IVssEnumObject -{ -public: - STDMETHODIMP QueryInterface(REFIID riid, void **ppObj); - STDMETHODIMP_(ULONG) AddRef(); - STDMETHODIMP_(ULONG) Release(); - - /* IVssEnumObject Methods */ - STDMETHODIMP Next( - ULONG celt, VSS_OBJECT_PROP *rgelt, ULONG *pceltFetched); - STDMETHODIMP Skip(ULONG celt); - STDMETHODIMP Reset(void); - STDMETHODIMP Clone(IVssEnumObject **ppenum); - - /* CQGAVSSEnumObject Methods */ - CQGAVSSEnumObject(); - ~CQGAVSSEnumObject(); - -private: - long m_nRefCount; -}; - -CQGAVSSEnumObject::CQGAVSSEnumObject() -{ - m_nRefCount = 0; - LockModule(TRUE); -} - -CQGAVSSEnumObject::~CQGAVSSEnumObject() -{ - LockModule(FALSE); -} - -STDMETHODIMP CQGAVSSEnumObject::QueryInterface(REFIID riid, void **ppObj) -{ - if (riid == IID_IUnknown || riid == IID_IVssEnumObject) { - *ppObj = static_cast<void*>(static_cast<IVssEnumObject*>(this)); - AddRef(); - return S_OK; - } - *ppObj = NULL; - return E_NOINTERFACE; -} - -STDMETHODIMP_(ULONG) CQGAVSSEnumObject::AddRef() -{ - return InterlockedIncrement(&m_nRefCount); -} - -STDMETHODIMP_(ULONG) CQGAVSSEnumObject::Release() -{ - long nRefCount = InterlockedDecrement(&m_nRefCount); - if (m_nRefCount == 0) { - delete this; - } - return nRefCount; -} - -STDMETHODIMP CQGAVSSEnumObject::Next( - ULONG celt, VSS_OBJECT_PROP *rgelt, ULONG *pceltFetched) -{ - *pceltFetched = 0; - return S_FALSE; -} - -STDMETHODIMP CQGAVSSEnumObject::Skip(ULONG celt) -{ - return S_FALSE; -} - -STDMETHODIMP CQGAVSSEnumObject::Reset(void) -{ - return S_OK; -} - -STDMETHODIMP CQGAVSSEnumObject::Clone(IVssEnumObject **ppenum) -{ - return E_NOTIMPL; -} - - -/* QGAVssProvider */ - -class CQGAVssProvider : - public IVssSoftwareSnapshotProvider, - public IVssProviderCreateSnapshotSet, - public IVssProviderNotifications -{ -public: - STDMETHODIMP QueryInterface(REFIID riid, void **ppObj); - STDMETHODIMP_(ULONG) AddRef(); - STDMETHODIMP_(ULONG) Release(); - - /* IVssSoftwareSnapshotProvider Methods */ - STDMETHODIMP SetContext(LONG lContext); - STDMETHODIMP GetSnapshotProperties( - VSS_ID SnapshotId, VSS_SNAPSHOT_PROP *pProp); - STDMETHODIMP Query( - VSS_ID QueriedObjectId, VSS_OBJECT_TYPE eQueriedObjectType, - VSS_OBJECT_TYPE eReturnedObjectsType, IVssEnumObject **ppEnum); - STDMETHODIMP DeleteSnapshots( - VSS_ID SourceObjectId, VSS_OBJECT_TYPE eSourceObjectType, - BOOL bForceDelete, LONG *plDeletedSnapshots, - VSS_ID *pNondeletedSnapshotID); - STDMETHODIMP BeginPrepareSnapshot( - VSS_ID SnapshotSetId, VSS_ID SnapshotId, - VSS_PWSZ pwszVolumeName, LONG lNewContext); - STDMETHODIMP IsVolumeSupported( - VSS_PWSZ pwszVolumeName, BOOL *pbSupportedByThisProvider); - STDMETHODIMP IsVolumeSnapshotted( - VSS_PWSZ pwszVolumeName, BOOL *pbSnapshotsPresent, - LONG *plSnapshotCompatibility); - STDMETHODIMP SetSnapshotProperty( - VSS_ID SnapshotId, VSS_SNAPSHOT_PROPERTY_ID eSnapshotPropertyId, - VARIANT vProperty); - STDMETHODIMP RevertToSnapshot(VSS_ID SnapshotId); - STDMETHODIMP QueryRevertStatus(VSS_PWSZ pwszVolume, IVssAsync **ppAsync); - - /* IVssProviderCreateSnapshotSet Methods */ - STDMETHODIMP EndPrepareSnapshots(VSS_ID SnapshotSetId); - STDMETHODIMP PreCommitSnapshots(VSS_ID SnapshotSetId); - STDMETHODIMP CommitSnapshots(VSS_ID SnapshotSetId); - STDMETHODIMP PostCommitSnapshots( - VSS_ID SnapshotSetId, LONG lSnapshotsCount); - STDMETHODIMP PreFinalCommitSnapshots(VSS_ID SnapshotSetId); - STDMETHODIMP PostFinalCommitSnapshots(VSS_ID SnapshotSetId); - STDMETHODIMP AbortSnapshots(VSS_ID SnapshotSetId); - - /* IVssProviderNotifications Methods */ - STDMETHODIMP OnLoad(IUnknown *pCallback); - STDMETHODIMP OnUnload(BOOL bForceUnload); - - /* CQGAVssProvider Methods */ - CQGAVssProvider(); - ~CQGAVssProvider(); - -private: - long m_nRefCount; -}; - -CQGAVssProvider::CQGAVssProvider() -{ - m_nRefCount = 0; - LockModule(TRUE); -} - -CQGAVssProvider::~CQGAVssProvider() -{ - LockModule(FALSE); -} - -STDMETHODIMP CQGAVssProvider::QueryInterface(REFIID riid, void **ppObj) -{ - if (riid == IID_IUnknown) { - *ppObj = static_cast<void*>(this); - AddRef(); - return S_OK; - } - if (riid == IID_IVssSoftwareSnapshotProvider) { - *ppObj = static_cast<void*>( - static_cast<IVssSoftwareSnapshotProvider*>(this)); - AddRef(); - return S_OK; - } - if (riid == IID_IVssProviderCreateSnapshotSet) { - *ppObj = static_cast<void*>( - static_cast<IVssProviderCreateSnapshotSet*>(this)); - AddRef(); - return S_OK; - } - if (riid == IID_IVssProviderNotifications) { - *ppObj = static_cast<void*>( - static_cast<IVssProviderNotifications*>(this)); - AddRef(); - return S_OK; - } - *ppObj = NULL; - return E_NOINTERFACE; -} - -STDMETHODIMP_(ULONG) CQGAVssProvider::AddRef() -{ - return InterlockedIncrement(&m_nRefCount); -} - -STDMETHODIMP_(ULONG) CQGAVssProvider::Release() -{ - long nRefCount = InterlockedDecrement(&m_nRefCount); - if (m_nRefCount == 0) { - delete this; - } - return nRefCount; -} - - -/* - * IVssSoftwareSnapshotProvider methods - */ - -STDMETHODIMP CQGAVssProvider::SetContext(LONG lContext) -{ - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::GetSnapshotProperties( - VSS_ID SnapshotId, VSS_SNAPSHOT_PROP *pProp) -{ - return VSS_E_OBJECT_NOT_FOUND; -} - -STDMETHODIMP CQGAVssProvider::Query( - VSS_ID QueriedObjectId, VSS_OBJECT_TYPE eQueriedObjectType, - VSS_OBJECT_TYPE eReturnedObjectsType, IVssEnumObject **ppEnum) -{ - try { - *ppEnum = new CQGAVSSEnumObject; - } catch (...) { - return E_OUTOFMEMORY; - } - (*ppEnum)->AddRef(); - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::DeleteSnapshots( - VSS_ID SourceObjectId, VSS_OBJECT_TYPE eSourceObjectType, - BOOL bForceDelete, LONG *plDeletedSnapshots, VSS_ID *pNondeletedSnapshotID) -{ - *plDeletedSnapshots = 0; - *pNondeletedSnapshotID = SourceObjectId; - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::BeginPrepareSnapshot( - VSS_ID SnapshotSetId, VSS_ID SnapshotId, - VSS_PWSZ pwszVolumeName, LONG lNewContext) -{ - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::IsVolumeSupported( - VSS_PWSZ pwszVolumeName, BOOL *pbSupportedByThisProvider) -{ - HANDLE hEventFrozen; - - /* Check if a requester is qemu-ga by whether an event is created */ - hEventFrozen = OpenEvent(EVENT_ALL_ACCESS, FALSE, EVENT_NAME_FROZEN); - if (!hEventFrozen) { - *pbSupportedByThisProvider = FALSE; - return S_OK; - } - CloseHandle(hEventFrozen); - - *pbSupportedByThisProvider = TRUE; - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::IsVolumeSnapshotted(VSS_PWSZ pwszVolumeName, - BOOL *pbSnapshotsPresent, LONG *plSnapshotCompatibility) -{ - *pbSnapshotsPresent = FALSE; - *plSnapshotCompatibility = 0; - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::SetSnapshotProperty(VSS_ID SnapshotId, - VSS_SNAPSHOT_PROPERTY_ID eSnapshotPropertyId, VARIANT vProperty) -{ - return E_NOTIMPL; -} - -STDMETHODIMP CQGAVssProvider::RevertToSnapshot(VSS_ID SnapshotId) -{ - return E_NOTIMPL; -} - -STDMETHODIMP CQGAVssProvider::QueryRevertStatus( - VSS_PWSZ pwszVolume, IVssAsync **ppAsync) -{ - return E_NOTIMPL; -} - - -/* - * IVssProviderCreateSnapshotSet methods - */ - -STDMETHODIMP CQGAVssProvider::EndPrepareSnapshots(VSS_ID SnapshotSetId) -{ - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::PreCommitSnapshots(VSS_ID SnapshotSetId) -{ - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::CommitSnapshots(VSS_ID SnapshotSetId) -{ - HRESULT hr = S_OK; - HANDLE hEventFrozen, hEventThaw, hEventTimeout; - - hEventFrozen = OpenEvent(EVENT_ALL_ACCESS, FALSE, EVENT_NAME_FROZEN); - if (!hEventFrozen) { - return E_FAIL; - } - - hEventThaw = OpenEvent(EVENT_ALL_ACCESS, FALSE, EVENT_NAME_THAW); - if (!hEventThaw) { - CloseHandle(hEventFrozen); - return E_FAIL; - } - - hEventTimeout = OpenEvent(EVENT_ALL_ACCESS, FALSE, EVENT_NAME_TIMEOUT); - if (!hEventTimeout) { - CloseHandle(hEventFrozen); - CloseHandle(hEventThaw); - return E_FAIL; - } - - /* Send event to qemu-ga to notify filesystem is frozen */ - SetEvent(hEventFrozen); - - /* Wait until the snapshot is taken by the host. */ - if (WaitForSingleObject(hEventThaw, VSS_TIMEOUT_MSEC) != WAIT_OBJECT_0) { - /* Send event to qemu-ga to notify the provider is timed out */ - SetEvent(hEventTimeout); - hr = E_ABORT; - } - - CloseHandle(hEventThaw); - CloseHandle(hEventFrozen); - CloseHandle(hEventTimeout); - return hr; -} - -STDMETHODIMP CQGAVssProvider::PostCommitSnapshots( - VSS_ID SnapshotSetId, LONG lSnapshotsCount) -{ - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::PreFinalCommitSnapshots(VSS_ID SnapshotSetId) -{ - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::PostFinalCommitSnapshots(VSS_ID SnapshotSetId) -{ - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::AbortSnapshots(VSS_ID SnapshotSetId) -{ - return S_OK; -} - -/* - * IVssProviderNotifications methods - */ - -STDMETHODIMP CQGAVssProvider::OnLoad(IUnknown *pCallback) -{ - return S_OK; -} - -STDMETHODIMP CQGAVssProvider::OnUnload(BOOL bForceUnload) -{ - return S_OK; -} - - -/* - * CQGAVssProviderFactory class - */ - -class CQGAVssProviderFactory : public IClassFactory -{ -public: - STDMETHODIMP QueryInterface(REFIID riid, void **ppv); - STDMETHODIMP_(ULONG) AddRef(); - STDMETHODIMP_(ULONG) Release(); - STDMETHODIMP CreateInstance( - IUnknown *pUnknownOuter, REFIID iid, void **ppv); - STDMETHODIMP LockServer(BOOL lock) { return E_NOTIMPL; } - - CQGAVssProviderFactory(); - ~CQGAVssProviderFactory(); - -private: - long m_nRefCount; -}; - -CQGAVssProviderFactory::CQGAVssProviderFactory() -{ - m_nRefCount = 0; - LockModule(TRUE); -} - -CQGAVssProviderFactory::~CQGAVssProviderFactory() -{ - LockModule(FALSE); -} - -STDMETHODIMP CQGAVssProviderFactory::QueryInterface(REFIID riid, void **ppv) -{ - if (riid == IID_IUnknown || riid == IID_IClassFactory) { - *ppv = static_cast<void*>(this); - AddRef(); - return S_OK; - } - *ppv = NULL; - return E_NOINTERFACE; -} - -STDMETHODIMP_(ULONG) CQGAVssProviderFactory::AddRef() -{ - return InterlockedIncrement(&m_nRefCount); -} - -STDMETHODIMP_(ULONG) CQGAVssProviderFactory::Release() -{ - long nRefCount = InterlockedDecrement(&m_nRefCount); - if (m_nRefCount == 0) { - delete this; - } - return nRefCount; -} - -STDMETHODIMP CQGAVssProviderFactory::CreateInstance( - IUnknown *pUnknownOuter, REFIID iid, void **ppv) -{ - CQGAVssProvider *pObj; - - if (pUnknownOuter) { - return CLASS_E_NOAGGREGATION; - } - try { - pObj = new CQGAVssProvider; - } catch (...) { - return E_OUTOFMEMORY; - } - HRESULT hr = pObj->QueryInterface(iid, ppv); - if (FAILED(hr)) { - delete pObj; - } - return hr; -} - - -/* - * DLL functions - */ - -STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv) -{ - CQGAVssProviderFactory *factory; - try { - factory = new CQGAVssProviderFactory; - } catch (...) { - return E_OUTOFMEMORY; - } - factory->AddRef(); - HRESULT hr = factory->QueryInterface(riid, ppv); - factory->Release(); - return hr; -} - -STDAPI DllCanUnloadNow() -{ - return g_nComObjsInUse == 0 ? S_OK : S_FALSE; -} - -EXTERN_C -BOOL WINAPI DllMain(HINSTANCE hinstDll, DWORD dwReason, LPVOID lpReserved) -{ - if (dwReason == DLL_PROCESS_ATTACH) { - g_hinstDll = hinstDll; - DisableThreadLibraryCalls(hinstDll); - } - return TRUE; -} |