1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* $Id$ */
/** @file
* VirtualBox Support Driver - IDC Client Lib, Stubs for SUPR0 APIs.
*/
/*
* Copyright (C) 2008-2017 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "SUPR0IdcClientInternal.h"
#include <iprt/errcore.h>
#include <iprt/asm.h>
/**
* Resolves a symbol.
*
* @returns Pointer to the symbol on success, NULL on failure.
*
* @param pHandle The IDC handle.
* @param ppfn Where to return the address of the symbol.
* @param pszName The name of the symbol.
*/
static void supR0IdcGetSymbol(PSUPDRVIDCHANDLE pHandle, PFNRT *ppfn, const char *pszName)
{
SUPDRVIDCREQGETSYM Req;
int rc;
/*
* Create and send a get symbol request.
*/
Req.Hdr.cb = sizeof(Req);
Req.Hdr.rc = VERR_WRONG_ORDER;
Req.Hdr.pSession = pHandle->s.pSession;
Req.u.In.pszSymbol = pszName;
Req.u.In.pszModule = NULL;
rc = supR0IdcNativeCall(pHandle, SUPDRV_IDC_REQ_GET_SYMBOL, &Req.Hdr);
if (RT_SUCCESS(rc))
ASMAtomicWritePtr((void * volatile *)ppfn, (void *)(uintptr_t)Req.u.Out.pfnSymbol);
}
/**
* Resolves a symbol.
*
* @returns Pointer to the symbol on success, NULL on failure.
*
* @param pSession The IDC session.
* @param ppfn Where to return the address of the symbol.
* @param pszName The name of the symbol.
*/
static void supR0IdcGetSymbolBySession(PSUPDRVSESSION pSession, PFNRT *ppfn, const char *pszName)
{
PSUPDRVIDCHANDLE pHandle = supR0IdcGetHandleFromSession(pSession);
if (pHandle)
supR0IdcGetSymbol(pHandle, ppfn, pszName);
}
SUPR0DECL(void *) SUPR0ObjRegister(PSUPDRVSESSION pSession, SUPDRVOBJTYPE enmType, PFNSUPDRVDESTRUCTOR pfnDestructor, void *pvUser1, void *pvUser2)
{
static DECLCALLBACKPTR(void *, s_pfn)(PSUPDRVSESSION /* pSession */, SUPDRVOBJTYPE /* enmType */, PFNSUPDRVDESTRUCTOR /* pfnDestructor */, void * /* pvUser1 */, void * /* pvUser2 */);
DECLCALLBACKPTR(void *, pfn)(PSUPDRVSESSION /* pSession */, SUPDRVOBJTYPE /* enmType */, PFNSUPDRVDESTRUCTOR /* pfnDestructor */, void * /* pvUser1 */, void * /* pvUser2 */);
pfn = s_pfn;
if (!pfn)
{
supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjRegister");
pfn = s_pfn;
if (!pfn)
return NULL;
}
return pfn(pSession, enmType, pfnDestructor, pvUser1, pvUser2);
}
SUPR0DECL(int) SUPR0ObjAddRef(void *pvObj, PSUPDRVSESSION pSession)
{
static DECLCALLBACKPTR(int, s_pfn)(void * /* pvObj */, PSUPDRVSESSION /* pSession */);
DECLCALLBACKPTR(int, pfn)(void * /* pvObj */, PSUPDRVSESSION /* pSession */);
pfn = s_pfn;
if (!pfn)
{
supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjAddRef");
pfn = s_pfn;
if (!pfn)
return VERR_NOT_SUPPORTED;
}
return pfn(pvObj, pSession);
}
SUPR0DECL(int) SUPR0ObjRelease(void *pvObj, PSUPDRVSESSION pSession)
{
static DECLCALLBACKPTR(int, s_pfn)(void * /* pvObj */, PSUPDRVSESSION /* pSession */);
DECLCALLBACKPTR(int, pfn)(void * /* pvObj */, PSUPDRVSESSION /* pSession */);
pfn = s_pfn;
if (!pfn)
{
supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjRelease");
pfn = s_pfn;
if (!pfn)
return VERR_NOT_SUPPORTED;
}
return pfn(pvObj, pSession);
}
SUPR0DECL(int) SUPR0ObjVerifyAccess(void *pvObj, PSUPDRVSESSION pSession, const char *pszObjName)
{
static DECLCALLBACKPTR(int, s_pfn)(void * /* pvObj */, PSUPDRVSESSION /* pSession */, const char * /* pszObjName */);
DECLCALLBACKPTR(int, pfn)(void * /* pvObj */, PSUPDRVSESSION /* pSession */, const char * /* pszObjName */);
pfn = s_pfn;
if (!pfn)
{
supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjVerifyAccess");
pfn = s_pfn;
if (!pfn)
return VERR_NOT_SUPPORTED;
}
return pfn(pvObj, pSession, pszObjName);
}
|
