116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
/*
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* QEMU Guest Agent win32 VSS common declarations
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*
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* Copyright Hitachi Data Systems Corp. 2013
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*
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* Authors:
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* Tomoki Sekiyama <tomoki.sekiyama@hds.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef VSS_COMMON_H
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#define VSS_COMMON_H
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#define __MIDL_user_allocate_free_DEFINED__
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#include <windows.h>
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#include <shlwapi.h>
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/* Reduce warnings to include vss.h */
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/* Ignore annotations for MS IDE */
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#define __in IN
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#define __out OUT
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#define __RPC_unique_pointer
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#define __RPC_string
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#define __RPC__deref_inout_opt
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#define __RPC__out
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#ifndef __RPC__out_ecount_part
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#define __RPC__out_ecount_part(x, y)
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#endif
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#define _declspec(x)
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#undef uuid
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#define uuid(x)
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/* Undef some duplicated error codes redefined in vss.h */
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#undef VSS_E_BAD_STATE
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#undef VSS_E_PROVIDER_NOT_REGISTERED
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#undef VSS_E_PROVIDER_VETO
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#undef VSS_E_OBJECT_NOT_FOUND
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#undef VSS_E_VOLUME_NOT_SUPPORTED
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#undef VSS_E_VOLUME_NOT_SUPPORTED_BY_PROVIDER
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#undef VSS_E_OBJECT_ALREADY_EXISTS
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#undef VSS_E_UNEXPECTED_PROVIDER_ERROR
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#undef VSS_E_INVALID_XML_DOCUMENT
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#undef VSS_E_MAXIMUM_NUMBER_OF_VOLUMES_REACHED
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#undef VSS_E_MAXIMUM_NUMBER_OF_SNAPSHOTS_REACHED
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#include <vss.h>
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#include "vss-handles.h"
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/* Macros to convert char definitions to wchar */
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#define _L(a) L##a
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#define L(a) _L(a)
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const GUID g_gProviderId = { 0x3629d4ed, 0xee09, 0x4e0e,
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{0x9a, 0x5c, 0x6d, 0x8b, 0xa2, 0x87, 0x2a, 0xef} };
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const GUID g_gProviderVersion = { 0x11ef8b15, 0xcac6, 0x40d6,
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{0x8d, 0x5c, 0x8f, 0xfc, 0x16, 0x3f, 0x24, 0xca} };
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const CLSID CLSID_QGAVSSProvider = { 0x6e6a3492, 0x8d4d, 0x440c,
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{0x96, 0x19, 0x5e, 0x5d, 0x0c, 0xc3, 0x1c, 0xa8} };
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const TCHAR g_szClsid[] = TEXT("{6E6A3492-8D4D-440C-9619-5E5D0CC31CA8}");
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const TCHAR g_szProgid[] = TEXT("QGAVSSProvider");
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#ifdef HAVE_VSS_SDK
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/* Enums undefined in VSS SDK 7.2 but defined in newer Windows SDK */
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enum __VSS_VOLUME_SNAPSHOT_ATTRIBUTES {
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VSS_VOLSNAP_ATTR_NO_AUTORECOVERY = 0x00000002,
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VSS_VOLSNAP_ATTR_TXF_RECOVERY = 0x02000000
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};
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#endif
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/* COM pointer utility; call ->Release() when it goes out of scope */
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template <class T>
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class COMPointer {
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COMPointer(const COMPointer<T> &p) { } /* no copy */
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T *p;
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public:
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COMPointer &operator=(T *new_p)
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{
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/* Assignment of a new T* (or NULL) causes release of previous p */
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if (p && p != new_p) {
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p->Release();
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}
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p = new_p;
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return *this;
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}
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/* Replace by assignment to the pointer of p */
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T **replace(void)
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{
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*this = NULL;
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return &p;
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}
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/* Make COMPointer be used like T* */
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operator T*() { return p; }
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T *operator->(void) { return p; }
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T &operator*(void) { return *p; }
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operator bool() { return !!p; }
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COMPointer(T *p = NULL) : p(p) { }
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~COMPointer() { *this = NULL; } /* Automatic release */
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};
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/*
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* COM initializer; this should declared before COMPointer to uninitialize COM
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* after releasing COM objects.
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*/
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class COMInitializer {
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public:
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COMInitializer() { CoInitialize(NULL); }
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~COMInitializer() { CoUninitialize(); }
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};
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#endif
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