diff options
Diffstat (limited to 'src/VBox/HostDrivers/Support/SUPR0IdcClientStubs.c')
| -rw-r--r-- | src/VBox/HostDrivers/Support/SUPR0IdcClientStubs.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/VBox/HostDrivers/Support/SUPR0IdcClientStubs.c b/src/VBox/HostDrivers/Support/SUPR0IdcClientStubs.c new file mode 100644 index 00000000..5e297c5b --- /dev/null +++ b/src/VBox/HostDrivers/Support/SUPR0IdcClientStubs.c @@ -0,0 +1,157 @@ +/* $Id: SUPR0IdcClientStubs.c $ */ +/** @file + * VirtualBox Support Driver - IDC Client Lib, Stubs for SUPR0 APIs. + */ + +/* + * Copyright (C) 2008-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox 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. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* 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); +} + |