VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/SUPR0IdcClientStubs.c@ 104448

Last change on this file since 104448 was 99739, checked in by vboxsync, 18 months ago

*: doxygen corrections (mostly about removing @returns from functions returning void).

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 5.3 KB
Line 
1/* $Id: SUPR0IdcClientStubs.c 99739 2023-05-11 01:01:08Z vboxsync $ */
2/** @file
3 * VirtualBox Support Driver - IDC Client Lib, Stubs for SUPR0 APIs.
4 */
5
6/*
7 * Copyright (C) 2008-2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#include "SUPR0IdcClientInternal.h"
42#include <iprt/errcore.h>
43#include <iprt/asm.h>
44
45
46/**
47 * Resolves a symbol.
48 *
49 * @param pHandle The IDC handle.
50 * @param ppfn Where to return the address of the symbol.
51 * @param pszName The name of the symbol.
52 */
53static void supR0IdcGetSymbol(PSUPDRVIDCHANDLE pHandle, PFNRT *ppfn, const char *pszName)
54{
55 SUPDRVIDCREQGETSYM Req;
56 int rc;
57
58 /*
59 * Create and send a get symbol request.
60 */
61 Req.Hdr.cb = sizeof(Req);
62 Req.Hdr.rc = VERR_WRONG_ORDER;
63 Req.Hdr.pSession = pHandle->s.pSession;
64 Req.u.In.pszSymbol = pszName;
65 Req.u.In.pszModule = NULL;
66 rc = supR0IdcNativeCall(pHandle, SUPDRV_IDC_REQ_GET_SYMBOL, &Req.Hdr);
67 if (RT_SUCCESS(rc))
68 ASMAtomicWritePtr((void * volatile *)ppfn, (void *)(uintptr_t)Req.u.Out.pfnSymbol);
69}
70
71
72/**
73 * Resolves a symbol.
74 *
75 * @param pSession The IDC session.
76 * @param ppfn Where to return the address of the symbol.
77 * @param pszName The name of the symbol.
78 */
79static void supR0IdcGetSymbolBySession(PSUPDRVSESSION pSession, PFNRT *ppfn, const char *pszName)
80{
81 PSUPDRVIDCHANDLE pHandle = supR0IdcGetHandleFromSession(pSession);
82 if (pHandle)
83 supR0IdcGetSymbol(pHandle, ppfn, pszName);
84}
85
86
87SUPR0DECL(void *) SUPR0ObjRegister(PSUPDRVSESSION pSession, SUPDRVOBJTYPE enmType, PFNSUPDRVDESTRUCTOR pfnDestructor, void *pvUser1, void *pvUser2)
88{
89 static DECLCALLBACKPTR(void *, s_pfn,(PSUPDRVSESSION /* pSession */, SUPDRVOBJTYPE /* enmType */, PFNSUPDRVDESTRUCTOR /* pfnDestructor */, void * /* pvUser1 */, void * /* pvUser2 */));
90 DECLCALLBACKPTR(void *, pfn,(PSUPDRVSESSION /* pSession */, SUPDRVOBJTYPE /* enmType */, PFNSUPDRVDESTRUCTOR /* pfnDestructor */, void * /* pvUser1 */, void * /* pvUser2 */));
91 pfn = s_pfn;
92 if (!pfn)
93 {
94 supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjRegister");
95 pfn = s_pfn;
96 if (!pfn)
97 return NULL;
98 }
99
100 return pfn(pSession, enmType, pfnDestructor, pvUser1, pvUser2);
101}
102
103
104SUPR0DECL(int) SUPR0ObjAddRef(void *pvObj, PSUPDRVSESSION pSession)
105{
106 static DECLCALLBACKPTR(int, s_pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */));
107 DECLCALLBACKPTR(int, pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */));
108 pfn = s_pfn;
109 if (!pfn)
110 {
111 supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjAddRef");
112 pfn = s_pfn;
113 if (!pfn)
114 return VERR_NOT_SUPPORTED;
115 }
116
117 return pfn(pvObj, pSession);
118}
119
120
121SUPR0DECL(int) SUPR0ObjRelease(void *pvObj, PSUPDRVSESSION pSession)
122{
123 static DECLCALLBACKPTR(int, s_pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */));
124 DECLCALLBACKPTR(int, pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */));
125 pfn = s_pfn;
126 if (!pfn)
127 {
128 supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjRelease");
129 pfn = s_pfn;
130 if (!pfn)
131 return VERR_NOT_SUPPORTED;
132 }
133
134 return pfn(pvObj, pSession);
135}
136
137
138SUPR0DECL(int) SUPR0ObjVerifyAccess(void *pvObj, PSUPDRVSESSION pSession, const char *pszObjName)
139{
140 static DECLCALLBACKPTR(int, s_pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */, const char * /* pszObjName */));
141 DECLCALLBACKPTR(int, pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */, const char * /* pszObjName */));
142 pfn = s_pfn;
143 if (!pfn)
144 {
145 supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjVerifyAccess");
146 pfn = s_pfn;
147 if (!pfn)
148 return VERR_NOT_SUPPORTED;
149 }
150
151 return pfn(pvObj, pSession, pszObjName);
152}
153
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