Devices/Storage/DrvVD.cpp

	DrvVD.cpp revision 8083a259c13e6e26e56ca2582edbad4a8cfac25a
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** $Id$ */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** @file
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * VBox storage devices:
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * Media implementation for VBox disk container
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/*
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync * Copyright (C) 2006-2008 innotek GmbH
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * available from http://www.virtualbox.org. This file is free software;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License (GPL) as published by the Free Software
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/*******************************************************************************
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*   Header files                                                               *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*******************************************************************************/
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#define LOG_GROUP LOG_GROUP_DRV_VD
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#include <VBox/VBoxHDD-new.h>
da957c069c2a3c582fe265ff88170ce4c42b499dvboxsync#include <VBox/pdmdrv.h>
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#include <iprt/alloc.h>
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#include <iprt/assert.h>
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#include <iprt/uuid.h>
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#include <iprt/file.h>
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#include <iprt/string.h>
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#include "Builtins.h"
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/*******************************************************************************
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*   Defined types, constants and macros                                        *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*******************************************************************************/
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** Converts a pointer to VDIDISK::IMedia to a PVBOXDISK. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#define PDMIMEDIA_2_VBOXDISK(pInterface) \
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    ( (PVBOXDISK)((uintptr_t)pInterface - RT_OFFSETOF(VBOXDISK, IMedia)) )
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** Converts a pointer to PDMDRVINS::IBase to a PPDMDRVINS. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#define PDMIBASE_2_DRVINS(pInterface) \
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    ( (PPDMDRVINS)((uintptr_t)pInterface - RT_OFFSETOF(PDMDRVINS, IBase)) )
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** Converts a pointer to PDMDRVINS::IBase to a PVBOXDISK. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync#define PDMIBASE_2_VBOXDISK(pInterface) \
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    ( PDMINS2DATA(PDMIBASE_2_DRVINS(pInterface), PVBOXDISK) )
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/**
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * VBox disk container media main structure, private part.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsynctypedef struct VBOXDISK
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /** The VBox disk container. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXHDD        pDisk;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /** The media interface. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PDMIMEDIA       IMedia;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /** Pointer to the driver instance. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PPDMDRVINS      pDrvIns;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /** Name of the image format backend. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    char            szFormat[16];
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /** Flag whether suspend has changed image open mode to read only. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    bool            fTempReadOnly;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync} VBOXDISK, *PVBOXDISK;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/*******************************************************************************
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*   Error reporting callback                                                   *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*******************************************************************************/
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic void drvvdErrorCallback(void *pvUser, int rc, RT_SRC_POS_DECL,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                               const char *pszFormat, va_list va)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PPDMDRVINS pDrvIns = (PPDMDRVINS)pvUser;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    pDrvIns->pDrvHlp->pfnVMSetErrorV(pDrvIns, rc, RT_SRC_POS_ARGS, pszFormat, va);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/*******************************************************************************
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*   Media interface methods                                                    *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*******************************************************************************/
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** @copydoc PDMIMEDIA::pfnRead */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdRead(PPDMIMEDIA pInterface,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                   uint64_t off, void *pvBuf, size_t cbRead)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: off=%#llx pvBuf=%p cbRead=%d\n", __FUNCTION__,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync             off, pvBuf, cbRead));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    int rc = VDRead(pData->pDisk, off, pvBuf, cbRead);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    if (VBOX_SUCCESS(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        Log2(("%s: off=%#llx pvBuf=%p cbRead=%d %.*Vhxd\n", __FUNCTION__,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync              off, pvBuf, cbRead, cbRead, pvBuf));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %Vrc\n", __FUNCTION__, rc));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** @copydoc PDMIMEDIA::pfnWrite */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdWrite(PPDMIMEDIA pInterface,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                    uint64_t off, const void *pvBuf,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                    size_t cbWrite)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: off=%#llx pvBuf=%p cbWrite=%d\n", __FUNCTION__,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync             off, pvBuf, cbWrite));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    Log2(("%s: off=%#llx pvBuf=%p cbWrite=%d %.*Vhxd\n", __FUNCTION__,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync          off, pvBuf, cbWrite, cbWrite, pvBuf));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    int rc = VDWrite(pData->pDisk, off, pvBuf, cbWrite);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %Vrc\n", __FUNCTION__, rc));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** @copydoc PDMIMEDIA::pfnFlush */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdFlush(PPDMIMEDIA pInterface)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    int rc = VDFlush(pData->pDisk);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %Vrc\n", __FUNCTION__, rc));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** @copydoc PDMIMEDIA::pfnGetSize */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(uint64_t) drvvdGetSize(PPDMIMEDIA pInterface)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    uint64_t cb = VDGetSize(pData->pDisk, VD_LAST_IMAGE);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %#llx (%llu)\n", __FUNCTION__, cb, cb));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return cb;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** @copydoc PDMIMEDIA::pfnIsReadOnly */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(bool) drvvdIsReadOnly(PPDMIMEDIA pInterface)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    bool f = VDIsReadOnly(pData->pDisk);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %d\n", __FUNCTION__, f));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return f;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync/** @copydoc PDMIMEDIA::pfnBiosGetPCHSGeometry */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdBiosGetPCHSGeometry(PPDMIMEDIA pInterface,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                                  PPDMMEDIAGEOMETRY pPCHSGeometry)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    int rc = VDGetPCHSGeometry(pData->pDisk, VD_LAST_IMAGE, pPCHSGeometry);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    if (VBOX_FAILURE(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        Log(("%s: geometry not available.\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        rc = VERR_PDM_GEOMETRY_NOT_SET;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %Vrc (CHS=%d/%d/%d)\n", __FUNCTION__,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync             rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync/** @copydoc PDMIMEDIA::pfnBiosSetPCHSGeometry */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdBiosSetPCHSGeometry(PPDMIMEDIA pInterface,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                                  PCPDMMEDIAGEOMETRY pPCHSGeometry)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: CHS=%d/%d/%d\n", __FUNCTION__,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync             pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    int rc = VDSetPCHSGeometry(pData->pDisk, VD_LAST_IMAGE, pPCHSGeometry);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %Vrc\n", __FUNCTION__, rc));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync/** @copydoc PDMIMEDIA::pfnBiosGetLCHSGeometry */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdBiosGetLCHSGeometry(PPDMIMEDIA pInterface,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                                  PPDMMEDIAGEOMETRY pLCHSGeometry)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    int rc = VDGetLCHSGeometry(pData->pDisk, VD_LAST_IMAGE, pLCHSGeometry);
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    if (VBOX_FAILURE(rc))
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    {
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync        Log(("%s: geometry not available.\n", __FUNCTION__));
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync        rc = VERR_PDM_GEOMETRY_NOT_SET;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    }
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    LogFlow(("%s: returns %Vrc (CHS=%d/%d/%d)\n", __FUNCTION__,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync             rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync/** @copydoc PDMIMEDIA::pfnBiosSetLCHSGeometry */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdBiosSetLCHSGeometry(PPDMIMEDIA pInterface,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                                  PCPDMMEDIAGEOMETRY pLCHSGeometry)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    LogFlow(("%s: CHS=%d/%d/%d\n", __FUNCTION__,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync             pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    int rc = VDSetLCHSGeometry(pData->pDisk, VD_LAST_IMAGE, pLCHSGeometry);
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    LogFlow(("%s: returns %Vrc\n", __FUNCTION__, rc));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** @copydoc PDMIMEDIA::pfnGetUuid */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdGetUuid(PPDMIMEDIA pInterface, PRTUUID pUuid)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMIMEDIA_2_VBOXDISK(pInterface);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    int rc = VDGetUuid(pData->pDisk, 0, pUuid);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %Vrc ({%Vuuid})\n", __FUNCTION__, rc, pUuid));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/*******************************************************************************
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*   Base interface methods                                                     *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*******************************************************************************/
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/** @copydoc PDMIBASE::pfnQueryInterface */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(void *) drvvdQueryInterface(PPDMIBASE pInterface,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                                PDMINTERFACE enmInterface)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PPDMDRVINS pDrvIns = PDMIBASE_2_DRVINS(pInterface);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMINS2DATA(pDrvIns, PVBOXDISK);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    switch (enmInterface)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        case PDMINTERFACE_BASE:
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            return &pDrvIns->IBase;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        case PDMINTERFACE_MEDIA:
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            return &pData->IMedia;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        default:
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            return NULL;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/*******************************************************************************
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*   Driver methods                                                             *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync*******************************************************************************/
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/**
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * Construct a VBox disk media driver instance.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * @returns VBox status.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * @param   pDrvIns     The driver instance data.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *                      If the registration structure is needed, pDrvIns->pDrvReg points to it.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * @param   pCfgHandle  Configuration node handle for the driver. Use this to obtain the configuration
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *                      of the driver instance. It's also found in pDrvIns->pCfgHandle as it's expected
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *                      to be used frequently in this function.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(int) drvvdConstruct(PPDMDRVINS pDrvIns,
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync                                        PCFGMNODE pCfgHandle)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMINS2DATA(pDrvIns, PVBOXDISK);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    int rc = VINF_SUCCESS;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    char *pszName;          /**< The path of the disk image file. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    bool fReadOnly;         /**< True if the media is readonly. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    bool fHonorZeroWrites;  /**< True if zero blocks should be written. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /*
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync     * Init the static parts.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync     */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pDrvIns->IBase.pfnQueryInterface    = drvvdQueryInterface;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    pData->pDrvIns = pDrvIns;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    pData->fTempReadOnly = false;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* IMedia */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnRead               = drvvdRead;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnWrite              = drvvdWrite;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnFlush              = drvvdFlush;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnGetSize            = drvvdGetSize;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnIsReadOnly         = drvvdIsReadOnly;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnBiosGetPCHSGeometry = drvvdBiosGetPCHSGeometry;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnBiosSetPCHSGeometry = drvvdBiosSetPCHSGeometry;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnBiosGetLCHSGeometry = drvvdBiosGetLCHSGeometry;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnBiosSetLCHSGeometry = drvvdBiosSetLCHSGeometry;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    pData->IMedia.pfnGetUuid            = drvvdGetUuid;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /*
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync     * Validate configuration and find all parent images.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync     * It's sort of up side down from the image dependency tree.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync     */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    unsigned    iLevel = 0;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PCFGMNODE   pCurNode = pCfgHandle;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    for (;;)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        bool fValid;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (pCurNode == pCfgHandle)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            /* Toplevel configuration contains the format backend name and
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync             * full image open information. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            fValid = CFGMR3AreValuesValid(pCurNode,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                                          "Format\0"
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                                          "Path\0ReadOnly\0HonorZeroWrites\0");
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        else
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            /* All other image configurations only contain image name. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            fValid = CFGMR3AreValuesValid(pCurNode, "Path\0");
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (!fValid)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            rc = PDMDrvHlpVMSetError(pDrvIns, VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                                     RT_SRC_POS, N_("DrvVD: Configuration error: keys incorrect at level %d"), iLevel);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            break;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        PCFGMNODE pParent = CFGMR3GetChild(pCurNode, "Parent");
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (!pParent)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            break;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        pCurNode = pParent;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        iLevel++;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /*
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync     * Open the images.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync     */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    if (VBOX_SUCCESS(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        rc = CFGMR3QueryString(pCfgHandle, "Format", &pData->szFormat[0],
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                               sizeof(pData->szFormat));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (rc == VERR_CFGM_VALUE_NOT_FOUND)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            /* Default disk image format is VMDK. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            rc = VINF_SUCCESS;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            strncpy(&pData->szFormat[0], "VMDK", sizeof(pData->szFormat));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            pData->szFormat[sizeof(pData->szFormat) - 1] = '\0';
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (VBOX_SUCCESS(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync            rc = VDCreate(pData->szFormat, drvvdErrorCallback, pDrvIns, &pData->pDisk);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            /* Error message is already set correctly. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        else
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            rc = PDMDRV_SET_ERROR(pDrvIns, rc,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                                  N_("DrvVD: Configuration error: Querying \"Format\" as string failed"));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    while (pCurNode && VBOX_SUCCESS(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        /*
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync         * Read the image configuration.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync         */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        rc = CFGMR3QueryStringAlloc(pCurNode, "Path", &pszName);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (VBOX_FAILURE(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            VDDestroy(pData->pDisk);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            rc = PDMDRV_SET_ERROR(pDrvIns, rc,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                                  N_("DrvVD: Configuration error: Querying \"Path\" as string failed"));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            break;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (iLevel == 0)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            rc = CFGMR3QueryBool(pCurNode, "ReadOnly", &fReadOnly);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            if (rc == VERR_CFGM_VALUE_NOT_FOUND)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                fReadOnly = false;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            else if (VBOX_FAILURE(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                MMR3HeapFree(pszName);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                VDDestroy(pData->pDisk);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                rc = PDMDRV_SET_ERROR(pDrvIns, rc,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                                      N_("DrvVD: Configuration error: Querying \"ReadOnly\" as boolean failed"));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                break;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            rc = CFGMR3QueryBool(pCfgHandle, "HonorZeroWrites", &fHonorZeroWrites);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            if (rc == VERR_CFGM_VALUE_NOT_FOUND)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                fHonorZeroWrites = false;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            else if (VBOX_FAILURE(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                MMR3HeapFree(pszName);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                VDDestroy(pData->pDisk);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                rc = PDMDRV_SET_ERROR(pDrvIns, rc,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                                      N_("DrvVD: Configuration error: Querying \"HonorZeroWrites\" as boolean failed"));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                break;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        else
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            fReadOnly = true;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            fHonorZeroWrites = false;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        /*
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync         * Open the image.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync         */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        unsigned uOpenFlags;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (fReadOnly)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            uOpenFlags = VD_OPEN_FLAGS_READONLY;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        else
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            uOpenFlags = VD_OPEN_FLAGS_NORMAL;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (fHonorZeroWrites)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            uOpenFlags |= VD_OPEN_FLAGS_HONOR_ZEROES;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        rc = VDOpen(pData->pDisk, pszName, uOpenFlags);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        if (VBOX_SUCCESS(rc))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            Log(("%s: %d - Opened '%s' in %s mode\n", __FUNCTION__,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                 iLevel, pszName,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync                 VDIsReadOnly(pData->pDisk) ? "read-only" : "read-write"));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        else
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            AssertMsgFailed(("Failed to open image '%s' rc=%Vrc\n", pszName, rc));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            VDDestroy(pData->pDisk);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync            break;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        MMR3HeapFree(pszName);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        /* next */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        iLevel--;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        pCurNode = CFGMR3GetParent(pCurNode);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s: returns %Vrc\n", __FUNCTION__, rc));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    return rc;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/**
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * Destruct a driver instance.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * Most VM resources are freed by the VM. This callback is provided so that any non-VM
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * resources can be freed correctly.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * @param   pDrvIns     The driver instance data.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(void) drvvdDestruct(PPDMDRVINS pDrvIns)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMINS2DATA(pDrvIns, PVBOXDISK);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    int rc = VDCloseAll(pData->pDisk);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    AssertRC(rc);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/**
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * When the VM has been suspended we'll change the image mode to read-only
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * so that main and others can read the VDIs. This is important when
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * saving state and so forth.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * @param   pDrvIns     The driver instance data.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(void) drvvdSuspend(PPDMDRVINS pDrvIns)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMINS2DATA(pDrvIns, PVBOXDISK);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    if (!VDIsReadOnly(pData->pDisk))
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        unsigned uOpenFlags;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync        int rc = VDGetOpenFlags(pData->pDisk, VD_LAST_IMAGE, &uOpenFlags);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        AssertRC(rc);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        uOpenFlags |= VD_OPEN_FLAGS_READONLY;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync        rc = VDSetOpenFlags(pData->pDisk, VD_LAST_IMAGE, uOpenFlags);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        AssertRC(rc);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        pData->fTempReadOnly = true;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/**
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * Before the VM resumes we'll have to undo the read-only mode change
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync * done in drvvdSuspend.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync *
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * @param   pDrvIns     The driver instance data.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsyncstatic DECLCALLBACK(void) drvvdResume(PPDMDRVINS pDrvIns)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    LogFlow(("%s:\n", __FUNCTION__));
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PVBOXDISK pData = PDMINS2DATA(pDrvIns, PVBOXDISK);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    if (pData->fTempReadOnly)
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    {
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        unsigned uOpenFlags;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync        int rc = VDGetOpenFlags(pData->pDisk, VD_LAST_IMAGE, &uOpenFlags);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        AssertRC(rc);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        uOpenFlags &= ~VD_OPEN_FLAGS_READONLY;
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync        rc = VDSetOpenFlags(pData->pDisk, VD_LAST_IMAGE, uOpenFlags);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        AssertRC(rc);
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync        pData->fTempReadOnly = false;
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    }
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync}
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync/**
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync * VBox disk container media driver registration record.
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsyncconst PDMDRVREG g_DrvVD =
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync{
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* u32Version */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PDM_DRVREG_VERSION,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* szDriverName */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    "DrvVD",
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pszDescription */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    "Generic VBox disk media driver.",
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* fFlags */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* fClass. */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    PDM_DRVREG_CLASS_MEDIA,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* cMaxInstances */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    ~0,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* cbInstance */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    sizeof(VBOXDISK),
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pfnConstruct */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    drvvdConstruct,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pfnDestruct */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    drvvdDestruct,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pfnIOCtl */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    NULL,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pfnPowerOn */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    NULL,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pfnReset */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    NULL,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pfnSuspend */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    drvvdSuspend,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pfnResume */
8083a259c13e6e26e56ca2582edbad4a8cfac25avboxsync    drvvdResume,
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    /* pfnDetach */
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync    NULL
a0240ff4f7663045c848fdbc192ea3d4d9f70a11vboxsync};