[10258] | 1 | /* $Id: SUPR0IdcClientStubs.c 99739 2023-05-11 01:01:08Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VirtualBox Support Driver - IDC Client Lib, Stubs for SUPR0 APIs.
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| 4 | */
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| 5 |
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| 6 | /*
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[98103] | 7 | * Copyright (C) 2008-2023 Oracle and/or its affiliates.
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[10258] | 8 | *
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[96407] | 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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[10258] | 11 | *
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[96407] | 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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[10258] | 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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[96407] | 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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[10258] | 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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[96407] | 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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[10258] | 35 | */
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| 36 |
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[57358] | 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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[10258] | 41 | #include "SUPR0IdcClientInternal.h"
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[76474] | 42 | #include <iprt/errcore.h>
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[29285] | 43 | #include <iprt/asm.h>
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[10258] | 44 |
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| 45 |
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| 46 | /**
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| 47 | * Resolves a symbol.
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| 48 | *
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| 49 | * @param pHandle The IDC handle.
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[58340] | 50 | * @param ppfn Where to return the address of the symbol.
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[10258] | 51 | * @param pszName The name of the symbol.
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| 52 | */
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| 53 | static void supR0IdcGetSymbol(PSUPDRVIDCHANDLE pHandle, PFNRT *ppfn, const char *pszName)
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| 54 | {
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| 55 | SUPDRVIDCREQGETSYM Req;
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| 56 | int rc;
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| 57 |
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| 58 | /*
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| 59 | * Create and send a get symbol request.
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| 60 | */
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| 61 | Req.Hdr.cb = sizeof(Req);
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| 62 | Req.Hdr.rc = VERR_WRONG_ORDER;
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| 63 | Req.Hdr.pSession = pHandle->s.pSession;
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| 64 | Req.u.In.pszSymbol = pszName;
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| 65 | Req.u.In.pszModule = NULL;
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| 66 | rc = supR0IdcNativeCall(pHandle, SUPDRV_IDC_REQ_GET_SYMBOL, &Req.Hdr);
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| 67 | if (RT_SUCCESS(rc))
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[62664] | 68 | ASMAtomicWritePtr((void * volatile *)ppfn, (void *)(uintptr_t)Req.u.Out.pfnSymbol);
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[10258] | 69 | }
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| 70 |
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| 71 |
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| 72 | /**
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| 73 | * Resolves a symbol.
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| 74 | *
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[58340] | 75 | * @param pSession The IDC session.
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| 76 | * @param ppfn Where to return the address of the symbol.
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[10258] | 77 | * @param pszName The name of the symbol.
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| 78 | */
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| 79 | static void supR0IdcGetSymbolBySession(PSUPDRVSESSION pSession, PFNRT *ppfn, const char *pszName)
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| 80 | {
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| 81 | PSUPDRVIDCHANDLE pHandle = supR0IdcGetHandleFromSession(pSession);
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| 82 | if (pHandle)
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| 83 | supR0IdcGetSymbol(pHandle, ppfn, pszName);
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| 84 | }
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| 85 |
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| 86 |
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| 87 | SUPR0DECL(void *) SUPR0ObjRegister(PSUPDRVSESSION pSession, SUPDRVOBJTYPE enmType, PFNSUPDRVDESTRUCTOR pfnDestructor, void *pvUser1, void *pvUser2)
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| 88 | {
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[85121] | 89 | static DECLCALLBACKPTR(void *, s_pfn,(PSUPDRVSESSION /* pSession */, SUPDRVOBJTYPE /* enmType */, PFNSUPDRVDESTRUCTOR /* pfnDestructor */, void * /* pvUser1 */, void * /* pvUser2 */));
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| 90 | DECLCALLBACKPTR(void *, pfn,(PSUPDRVSESSION /* pSession */, SUPDRVOBJTYPE /* enmType */, PFNSUPDRVDESTRUCTOR /* pfnDestructor */, void * /* pvUser1 */, void * /* pvUser2 */));
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[10258] | 91 | pfn = s_pfn;
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| 92 | if (!pfn)
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| 93 | {
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| 94 | supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjRegister");
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| 95 | pfn = s_pfn;
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| 96 | if (!pfn)
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| 97 | return NULL;
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| 98 | }
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| 99 |
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| 100 | return pfn(pSession, enmType, pfnDestructor, pvUser1, pvUser2);
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| 101 | }
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| 102 |
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| 103 |
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| 104 | SUPR0DECL(int) SUPR0ObjAddRef(void *pvObj, PSUPDRVSESSION pSession)
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| 105 | {
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[85121] | 106 | static DECLCALLBACKPTR(int, s_pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */));
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| 107 | DECLCALLBACKPTR(int, pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */));
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[10258] | 108 | pfn = s_pfn;
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| 109 | if (!pfn)
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| 110 | {
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| 111 | supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjAddRef");
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| 112 | pfn = s_pfn;
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| 113 | if (!pfn)
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| 114 | return VERR_NOT_SUPPORTED;
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| 115 | }
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| 116 |
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| 117 | return pfn(pvObj, pSession);
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| 118 | }
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| 119 |
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| 120 |
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| 121 | SUPR0DECL(int) SUPR0ObjRelease(void *pvObj, PSUPDRVSESSION pSession)
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| 122 | {
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[85121] | 123 | static DECLCALLBACKPTR(int, s_pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */));
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| 124 | DECLCALLBACKPTR(int, pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */));
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[10258] | 125 | pfn = s_pfn;
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| 126 | if (!pfn)
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| 127 | {
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| 128 | supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjRelease");
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| 129 | pfn = s_pfn;
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| 130 | if (!pfn)
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| 131 | return VERR_NOT_SUPPORTED;
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| 132 | }
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| 133 |
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| 134 | return pfn(pvObj, pSession);
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| 135 | }
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| 136 |
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| 137 |
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| 138 | SUPR0DECL(int) SUPR0ObjVerifyAccess(void *pvObj, PSUPDRVSESSION pSession, const char *pszObjName)
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| 139 | {
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[85121] | 140 | static DECLCALLBACKPTR(int, s_pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */, const char * /* pszObjName */));
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| 141 | DECLCALLBACKPTR(int, pfn,(void * /* pvObj */, PSUPDRVSESSION /* pSession */, const char * /* pszObjName */));
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[10258] | 142 | pfn = s_pfn;
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| 143 | if (!pfn)
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| 144 | {
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| 145 | supR0IdcGetSymbolBySession(pSession, (PFNRT *)&s_pfn, "SUPR0ObjVerifyAccess");
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| 146 | pfn = s_pfn;
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| 147 | if (!pfn)
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| 148 | return VERR_NOT_SUPPORTED;
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| 149 | }
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| 150 |
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| 151 | return pfn(pvObj, pSession, pszObjName);
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| 152 | }
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| 153 |
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