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/* $Id: VBoxGuestR3LibModule.cpp $ */
/** @file
* VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, Shared modules.
*/
/*
* Copyright (C) 2007-2023 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 "VBoxGuestR3LibInternal.h"
#include <iprt/mem.h>
#include <iprt/string.h>
/**
* Registers a new shared module for the VM
*
* @returns IPRT status code.
* @param pszModuleName Module name
* @param pszVersion Module version
* @param GCBaseAddr Module base address
* @param cbModule Module size
* @param cRegions Number of shared region descriptors
* @param pRegions Shared region(s)
*/
VBGLR3DECL(int) VbglR3RegisterSharedModule(char *pszModuleName, char *pszVersion,
RTGCPTR64 GCBaseAddr, uint32_t cbModule,
unsigned cRegions, VMMDEVSHAREDREGIONDESC *pRegions)
{
VMMDevSharedModuleRegistrationRequest *pReq;
int rc;
/* Sanity check. */
AssertReturn(cRegions < VMMDEVSHAREDREGIONDESC_MAX, VERR_INVALID_PARAMETER);
pReq = (VMMDevSharedModuleRegistrationRequest *)RTMemAllocZ(RT_UOFFSETOF_DYN(VMMDevSharedModuleRegistrationRequest,
aRegions[cRegions]));
AssertReturn(pReq, VERR_NO_MEMORY);
vmmdevInitRequest(&pReq->header, VMMDevReq_RegisterSharedModule);
pReq->header.size = RT_UOFFSETOF_DYN(VMMDevSharedModuleRegistrationRequest, aRegions[cRegions]);
pReq->GCBaseAddr = GCBaseAddr;
pReq->cbModule = cbModule;
pReq->cRegions = cRegions;
#ifdef RT_OS_WINDOWS
# if ARCH_BITS == 32
pReq->enmGuestOS = VBOXOSFAMILY_Windows32;
# else
pReq->enmGuestOS = VBOXOSFAMILY_Windows64;
# endif
#else
/** @todo */
pReq->enmGuestOS = VBOXOSFAMILY_Unknown;
#endif
for (unsigned i = 0; i < cRegions; i++)
pReq->aRegions[i] = pRegions[i];
if ( RTStrCopy(pReq->szName, sizeof(pReq->szName), pszModuleName) != VINF_SUCCESS
|| RTStrCopy(pReq->szVersion, sizeof(pReq->szVersion), pszVersion) != VINF_SUCCESS)
{
rc = VERR_BUFFER_OVERFLOW;
goto end;
}
rc = vbglR3GRPerform(&pReq->header);
end:
RTMemFree(pReq);
return rc;
}
/**
* Unregisters a shared module for the VM
*
* @returns IPRT status code.
* @param pszModuleName Module name
* @param pszVersion Module version
* @param GCBaseAddr Module base address
* @param cbModule Module size
*/
VBGLR3DECL(int) VbglR3UnregisterSharedModule(char *pszModuleName, char *pszVersion, RTGCPTR64 GCBaseAddr, uint32_t cbModule)
{
VMMDevSharedModuleUnregistrationRequest Req;
vmmdevInitRequest(&Req.header, VMMDevReq_UnregisterSharedModule);
Req.GCBaseAddr = GCBaseAddr;
Req.cbModule = cbModule;
if ( RTStrCopy(Req.szName, sizeof(Req.szName), pszModuleName) != VINF_SUCCESS
|| RTStrCopy(Req.szVersion, sizeof(Req.szVersion), pszVersion) != VINF_SUCCESS)
{
return VERR_BUFFER_OVERFLOW;
}
return vbglR3GRPerform(&Req.header);
}
/**
* Checks registered modules for shared pages
*
* @returns IPRT status code.
*/
VBGLR3DECL(int) VbglR3CheckSharedModules()
{
VMMDevSharedModuleCheckRequest Req;
vmmdevInitRequest(&Req.header, VMMDevReq_CheckSharedModules);
return vbglR3GRPerform(&Req.header);
}
/**
* Checks if page sharing is enabled.
*
* @returns true/false enabled/disabled
*/
VBGLR3DECL(bool) VbglR3PageSharingIsEnabled()
{
VMMDevPageSharingStatusRequest Req;
vmmdevInitRequest(&Req.header, VMMDevReq_GetPageSharingStatus);
int rc = vbglR3GRPerform(&Req.header);
if (RT_SUCCESS(rc))
return Req.fEnabled;
return false;
}
/**
* Checks if page sharing is enabled.
*
* @returns true/false enabled/disabled
*/
VBGLR3DECL(int) VbglR3PageIsShared(RTGCPTR pPage, bool *pfShared, uint64_t *puPageFlags)
{
#ifdef DEBUG
VMMDevPageIsSharedRequest Req;
vmmdevInitRequest(&Req.header, VMMDevReq_DebugIsPageShared);
Req.GCPtrPage = pPage;
int rc = vbglR3GRPerform(&Req.header);
if (RT_SUCCESS(rc))
{
*pfShared = Req.fShared;
*puPageFlags = Req.uPageFlags;
}
return rc;
#else
RT_NOREF3(pPage, pfShared, puPageFlags);
return VERR_NOT_IMPLEMENTED;
#endif
}
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