1 /* 2 * QEMU Guest Agent win32 VSS common declarations 3 * 4 * Copyright Hitachi Data Systems Corp. 2013 5 * 6 * Authors: 7 * Tomoki Sekiyama <tomoki.sekiyama@hds.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or later. 10 * See the COPYING file in the top-level directory. 11 */ 12 13 #ifndef VSS_WIN32_H 14 #define VSS_WIN32_H 15 16 #define __MIDL_user_allocate_free_DEFINED__ 17 #include "config-host.h" 18 #include <windows.h> 19 #include <shlwapi.h> 20 21 /* Reduce warnings to include vss.h */ 22 23 /* Ignore annotations for MS IDE */ 24 #define __in IN 25 #define __out OUT 26 #define __RPC_unique_pointer 27 #define __RPC_string 28 #define __RPC__deref_inout_opt 29 #define __RPC__out 30 #ifndef __RPC__out_ecount_part 31 #define __RPC__out_ecount_part(x, y) 32 #endif 33 #define _declspec(x) 34 #undef uuid 35 #define uuid(x) 36 37 /* Undef some duplicated error codes redefined in vss.h */ 38 #undef VSS_E_BAD_STATE 39 #undef VSS_E_PROVIDER_NOT_REGISTERED 40 #undef VSS_E_PROVIDER_VETO 41 #undef VSS_E_OBJECT_NOT_FOUND 42 #undef VSS_E_VOLUME_NOT_SUPPORTED 43 #undef VSS_E_VOLUME_NOT_SUPPORTED_BY_PROVIDER 44 #undef VSS_E_OBJECT_ALREADY_EXISTS 45 #undef VSS_E_UNEXPECTED_PROVIDER_ERROR 46 #undef VSS_E_INVALID_XML_DOCUMENT 47 #undef VSS_E_MAXIMUM_NUMBER_OF_VOLUMES_REACHED 48 #undef VSS_E_MAXIMUM_NUMBER_OF_SNAPSHOTS_REACHED 49 50 /* 51 * VSS headers must be installed from Microsoft VSS SDK 7.2 available at: 52 * http://www.microsoft.com/en-us/download/details.aspx?id=23490 53 */ 54 #include "inc/win2003/vss.h" 55 56 /* Macros to convert char definitions to wchar */ 57 #define _L(a) L##a 58 #define L(a) _L(a) 59 60 /* Constants for QGA VSS Provider */ 61 62 #define QGA_PROVIDER_NAME "QEMU Guest Agent VSS Provider" 63 #define QGA_PROVIDER_LNAME L(QGA_PROVIDER_NAME) 64 #define QGA_PROVIDER_VERSION L(QEMU_VERSION) 65 66 #define EVENT_NAME_FROZEN "Global\\QGAVSSEvent-frozen" 67 #define EVENT_NAME_THAW "Global\\QGAVSSEvent-thaw" 68 #define EVENT_NAME_TIMEOUT "Global\\QGAVSSEvent-timeout" 69 70 const GUID g_gProviderId = { 0x3629d4ed, 0xee09, 0x4e0e, 71 {0x9a, 0x5c, 0x6d, 0x8b, 0xa2, 0x87, 0x2a, 0xef} }; 72 const GUID g_gProviderVersion = { 0x11ef8b15, 0xcac6, 0x40d6, 73 {0x8d, 0x5c, 0x8f, 0xfc, 0x16, 0x3f, 0x24, 0xca} }; 74 75 const CLSID CLSID_QGAVSSProvider = { 0x6e6a3492, 0x8d4d, 0x440c, 76 {0x96, 0x19, 0x5e, 0x5d, 0x0c, 0xc3, 0x1c, 0xa8} }; 77 78 const TCHAR g_szClsid[] = TEXT("{6E6A3492-8D4D-440C-9619-5E5D0CC31CA8}"); 79 const TCHAR g_szProgid[] = TEXT("QGAVSSProvider"); 80 81 /* Enums undefined in VSS SDK 7.2 but defined in newer Windows SDK */ 82 enum __VSS_VOLUME_SNAPSHOT_ATTRIBUTES { 83 VSS_VOLSNAP_ATTR_NO_AUTORECOVERY = 0x00000002, 84 VSS_VOLSNAP_ATTR_TXF_RECOVERY = 0x02000000 85 }; 86 87 88 /* COM pointer utility; call ->Release() when it goes out of scope */ 89 template <class T> 90 class COMPointer { 91 COMPointer(const COMPointer<T> &p) { } /* no copy */ 92 T *p; 93 public: 94 COMPointer &operator=(T *new_p) 95 { 96 /* Assignment of a new T* (or NULL) causes release of previous p */ 97 if (p && p != new_p) { 98 p->Release(); 99 } 100 p = new_p; 101 return *this; 102 } 103 /* Replace by assignment to the pointer of p */ 104 T **replace(void) 105 { 106 *this = NULL; 107 return &p; 108 } 109 /* Make COMPointer be used like T* */ 110 operator T*() { return p; } 111 T *operator->(void) { return p; } 112 T &operator*(void) { return *p; } 113 operator bool() { return !!p; } 114 115 COMPointer(T *p = NULL) : p(p) { } 116 ~COMPointer() { *this = NULL; } /* Automatic release */ 117 }; 118 119 /* 120 * COM initializer; this should declared before COMPointer to uninitialize COM 121 * after releasing COM objects. 122 */ 123 class COMInitializer { 124 public: 125 COMInitializer() { CoInitialize(NULL); } 126 ~COMInitializer() { CoUninitialize(); } 127 }; 128 129 #endif 130