scsi: pvscsi: check command descriptor ring buffer size (CVE-2016-4952)
[qemu.git] / qga / vss-win32 / vss-common.h
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 <windows.h>
18 #include <shlwapi.h>
19
20 /* Reduce warnings to include vss.h */
21
22 /* Ignore annotations for MS IDE */
23 #define __in IN
24 #define __out OUT
25 #define __RPC_unique_pointer
26 #define __RPC_string
27 #define __RPC__deref_inout_opt
28 #define __RPC__out
29 #ifndef __RPC__out_ecount_part
30 #define __RPC__out_ecount_part(x, y)
31 #endif
32 #define _declspec(x)
33 #undef uuid
34 #define uuid(x)
35
36 /* Undef some duplicated error codes redefined in vss.h */
37 #undef VSS_E_BAD_STATE
38 #undef VSS_E_PROVIDER_NOT_REGISTERED
39 #undef VSS_E_PROVIDER_VETO
40 #undef VSS_E_OBJECT_NOT_FOUND
41 #undef VSS_E_VOLUME_NOT_SUPPORTED
42 #undef VSS_E_VOLUME_NOT_SUPPORTED_BY_PROVIDER
43 #undef VSS_E_OBJECT_ALREADY_EXISTS
44 #undef VSS_E_UNEXPECTED_PROVIDER_ERROR
45 #undef VSS_E_INVALID_XML_DOCUMENT
46 #undef VSS_E_MAXIMUM_NUMBER_OF_VOLUMES_REACHED
47 #undef VSS_E_MAXIMUM_NUMBER_OF_SNAPSHOTS_REACHED
48
49 /*
50 * VSS headers must be installed from Microsoft VSS SDK 7.2 available at:
51 * http://www.microsoft.com/en-us/download/details.aspx?id=23490
52 */
53 #include "inc/win2003/vss.h"
54
55 /* Macros to convert char definitions to wchar */
56 #define _L(a) L##a
57 #define L(a) _L(a)
58
59 /* Constants for QGA VSS Provider */
60
61 #define QGA_PROVIDER_NAME "QEMU Guest Agent VSS Provider"
62 #define QGA_PROVIDER_LNAME L(QGA_PROVIDER_NAME)
63 #define QGA_PROVIDER_VERSION L(QEMU_VERSION)
64
65 #define EVENT_NAME_FROZEN "Global\\QGAVSSEvent-frozen"
66 #define EVENT_NAME_THAW "Global\\QGAVSSEvent-thaw"
67 #define EVENT_NAME_TIMEOUT "Global\\QGAVSSEvent-timeout"
68
69 const GUID g_gProviderId = { 0x3629d4ed, 0xee09, 0x4e0e,
70 {0x9a, 0x5c, 0x6d, 0x8b, 0xa2, 0x87, 0x2a, 0xef} };
71 const GUID g_gProviderVersion = { 0x11ef8b15, 0xcac6, 0x40d6,
72 {0x8d, 0x5c, 0x8f, 0xfc, 0x16, 0x3f, 0x24, 0xca} };
73
74 const CLSID CLSID_QGAVSSProvider = { 0x6e6a3492, 0x8d4d, 0x440c,
75 {0x96, 0x19, 0x5e, 0x5d, 0x0c, 0xc3, 0x1c, 0xa8} };
76
77 const TCHAR g_szClsid[] = TEXT("{6E6A3492-8D4D-440C-9619-5E5D0CC31CA8}");
78 const TCHAR g_szProgid[] = TEXT("QGAVSSProvider");
79
80 /* Enums undefined in VSS SDK 7.2 but defined in newer Windows SDK */
81 enum __VSS_VOLUME_SNAPSHOT_ATTRIBUTES {
82 VSS_VOLSNAP_ATTR_NO_AUTORECOVERY = 0x00000002,
83 VSS_VOLSNAP_ATTR_TXF_RECOVERY = 0x02000000
84 };
85
86
87 /* COM pointer utility; call ->Release() when it goes out of scope */
88 template <class T>
89 class COMPointer {
90 COMPointer(const COMPointer<T> &p) { } /* no copy */
91 T *p;
92 public:
93 COMPointer &operator=(T *new_p)
94 {
95 /* Assignment of a new T* (or NULL) causes release of previous p */
96 if (p && p != new_p) {
97 p->Release();
98 }
99 p = new_p;
100 return *this;
101 }
102 /* Replace by assignment to the pointer of p */
103 T **replace(void)
104 {
105 *this = NULL;
106 return &p;
107 }
108 /* Make COMPointer be used like T* */
109 operator T*() { return p; }
110 T *operator->(void) { return p; }
111 T &operator*(void) { return *p; }
112 operator bool() { return !!p; }
113
114 COMPointer(T *p = NULL) : p(p) { }
115 ~COMPointer() { *this = NULL; } /* Automatic release */
116 };
117
118 /*
119 * COM initializer; this should declared before COMPointer to uninitialize COM
120 * after releasing COM objects.
121 */
122 class COMInitializer {
123 public:
124 COMInitializer() { CoInitialize(NULL); }
125 ~COMInitializer() { CoUninitialize(); }
126 };
127
128 #endif