| 1 | /* $Id: VBoxGuestR3LibModule.cpp 28800 2010-04-27 08:22:32Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, Shared modules.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2007-2010 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*******************************************************************************
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| 29 | * Header Files *
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| 30 | *******************************************************************************/
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| 31 | #include "VBGLR3Internal.h"
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| 32 | #include <iprt/mem.h>
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| 33 | #include <iprt/string.h>
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| 34 |
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| 35 | /**
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| 36 | * Registers a new shared module for the VM
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| 37 | *
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| 38 | * @returns IPRT status code.
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| 39 | * @param pszModuleName Module name
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| 40 | * @param pszVersion Module version
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| 41 | * @param GCBaseAddr Module base address
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| 42 | * @param cbModule Module size
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| 43 | * @param cRegions Number of shared region descriptors
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| 44 | * @param pRegions Shared region(s)
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| 45 | */
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| 46 | VBGLR3DECL(int) VbglR3RegisterSharedModule(char *pszModuleName, char *pszVersion,
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| 47 | RTGCPTR64 GCBaseAddr, uint32_t cbModule,
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| 48 | unsigned cRegions, VMMDEVSHAREDREGIONDESC *pRegions)
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| 49 | {
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| 50 | VMMDevSharedModuleRegistrationRequest *pReq;
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| 51 | int rc;
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| 52 |
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| 53 | /* Sanity check. */
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| 54 | AssertReturn(cRegions < VMMDEVSHAREDREGIONDESC_MAX, VERR_INVALID_PARAMETER);
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| 55 |
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| 56 | pReq = (VMMDevSharedModuleRegistrationRequest *)RTMemAllocZ(RT_OFFSETOF(VMMDevSharedModuleRegistrationRequest, aRegions[cRegions]));
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| 57 | AssertReturn(pReq, VERR_NO_MEMORY);
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| 58 |
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| 59 | vmmdevInitRequest(&pReq->header, VMMDevReq_RegisterSharedModule);
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| 60 | pReq->GCBaseAddr = GCBaseAddr;
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| 61 | pReq->cbModule = cbModule;
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| 62 | pReq->cRegions = cRegions;
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| 63 | for (unsigned i = 0; i < cRegions; i++)
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| 64 | pReq->aRegions[i] = pRegions[i];
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| 65 |
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| 66 | if ( RTStrCopy(pReq->szName, sizeof(pReq->szName), pszModuleName) != VINF_SUCCESS
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| 67 | || RTStrCopy(pReq->szVersion, sizeof(pReq->szVersion), pszVersion) != VINF_SUCCESS)
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| 68 | {
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| 69 | rc = VERR_BUFFER_OVERFLOW;
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| 70 | goto end;
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| 71 | }
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| 72 |
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| 73 | rc = vbglR3GRPerform(&pReq->header);
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| 74 |
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| 75 | end:
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| 76 | RTMemFree(pReq);
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| 77 | return rc;
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| 78 |
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| 79 | }
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| 80 |
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| 81 | /**
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| 82 | * Unregisters a shared module for the VM
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| 83 | *
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| 84 | * @returns IPRT status code.
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| 85 | * @param pszModuleName Module name
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| 86 | * @param pszVersion Module version
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| 87 | * @param GCBaseAddr Module base address
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| 88 | * @param cbModule Module size
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| 89 | */
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| 90 | VBGLR3DECL(int) VbglR3UnregisterSharedModule(char *pszModuleName, char *pszVersion, RTGCPTR64 GCBaseAddr, uint32_t cbModule)
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| 91 | {
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| 92 | VMMDevSharedModuleUnregistrationRequest Req;
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| 93 |
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| 94 | vmmdevInitRequest(&Req.header, VMMDevReq_UnregisterSharedModule);
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| 95 | Req.GCBaseAddr = GCBaseAddr;
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| 96 | Req.cbModule = cbModule;
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| 97 |
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| 98 | if ( RTStrCopy(Req.szName, sizeof(Req.szName), pszModuleName) != VINF_SUCCESS
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| 99 | || RTStrCopy(Req.szVersion, sizeof(Req.szVersion), pszVersion) != VINF_SUCCESS)
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| 100 | {
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| 101 | return VERR_BUFFER_OVERFLOW;
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| 102 | }
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| 103 | return vbglR3GRPerform(&Req.header);
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| 104 | }
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| 105 |
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| 106 | /**
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| 107 | * Checks regsitered modules for shared pages
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| 108 | *
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| 109 | * @returns IPRT status code.
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| 110 | */
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| 111 | VBGLR3DECL(int) VbglR3CheckSharedModules()
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| 112 | {
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| 113 | VMMDevSharedModuleCheckRequest Req;
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| 114 |
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| 115 | vmmdevInitRequest(&Req.header, VMMDevReq_CheckSharedModules);
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| 116 | return vbglR3GRPerform(&Req.header);
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| 117 | }
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| 118 |
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