示例#1
0
/**
 * Internal: Open an image, constructing all necessary data structures.
 */
static int rawOpenImage(PRAWIMAGE pImage, unsigned uOpenFlags)
{
    pImage->uOpenFlags = uOpenFlags;
    pImage->fCreate = false;

    pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
    pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
    AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);

    /* Open the image. */
    int rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
                               VDOpenFlagsToFileOpenFlags(uOpenFlags,
                                       false /* fCreate */),
                               &pImage->pStorage);
    if (RT_SUCCESS(rc))
    {
        rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &pImage->cbSize);
        if (   RT_SUCCESS(rc)
                && !(pImage->cbSize % 512))
            pImage->uImageFlags |= VD_IMAGE_FLAGS_FIXED;
        else if (RT_SUCCESS(rc))
            rc = VERR_VD_RAW_SIZE_MODULO_512;
    }
    /* else: Do NOT signal an appropriate error here, as the VD layer has the
     *       choice of retrying the open if it failed. */

    if (RT_FAILURE(rc))
        rawFreeImage(pImage, false);
    return rc;
}
示例#2
0
/** @copydoc VBOXHDDBACKEND::pfnCheckIfValid */
static int parallelsCheckIfValid(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
                                 PVDINTERFACE pVDIfsImage, VDTYPE *penmType)
{
    int rc;
    PVDIOSTORAGE pStorage;
    ParallelsHeader parallelsHeader;

    PVDINTERFACEIOINT pIfIo = VDIfIoIntGet(pVDIfsImage);
    AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER);

    rc = vdIfIoIntFileOpen(pIfIo, pszFilename,
                           VDOpenFlagsToFileOpenFlags(VD_OPEN_FLAGS_READONLY,
                                                      false /* fCreate */),
                           &pStorage);
    if (RT_FAILURE(rc))
        return rc;

    rc = vdIfIoIntFileReadSync(pIfIo, pStorage, 0, &parallelsHeader,
                               sizeof(ParallelsHeader), NULL);
    if (RT_SUCCESS(rc))
    {
        if (   !memcmp(parallelsHeader.HeaderIdentifier, PARALLELS_HEADER_MAGIC, 16)
            && (parallelsHeader.uVersion == PARALLELS_DISK_VERSION))
            rc = VINF_SUCCESS;
        else
        {
            /*
             * The image may be an fixed size image.
             * Unfortunately fixed sized parallels images
             * are just raw files hence no magic header to
             * check for.
             * The code succeeds if the file is a multiple
             * of 512 and if the file extensions is *.hdd
             */
            uint64_t cbFile;
            char *pszExtension;

            rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile);
            if (RT_FAILURE(rc) || ((cbFile % 512) != 0))
            {
                vdIfIoIntFileClose(pIfIo, pStorage);
                return VERR_VD_PARALLELS_INVALID_HEADER;
            }

            pszExtension = RTPathExt(pszFilename);
            if (!pszExtension || strcmp(pszExtension, ".hdd"))
                rc = VERR_VD_PARALLELS_INVALID_HEADER;
            else
                rc = VINF_SUCCESS;
        }
    }

    if (RT_SUCCESS(rc))
        *penmType = VDTYPE_HDD;

    vdIfIoIntFileClose(pIfIo, pStorage);
    return rc;
}
示例#3
0
文件: RAW.cpp 项目: miguelinux/vbox
/** @copydoc VBOXHDDBACKEND::pfnCheckIfValid */
static DECLCALLBACK(int) rawCheckIfValid(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
                                         PVDINTERFACE pVDIfsImage, VDTYPE *penmType)
{
    LogFlowFunc(("pszFilename=\"%s\" pVDIfsDisk=%#p pVDIfsImage=%#p\n", pszFilename, pVDIfsDisk, pVDIfsImage));
    PVDIOSTORAGE pStorage = NULL;
    uint64_t cbFile;
    int rc = VINF_SUCCESS;
    char *pszSuffix = NULL;

    PVDINTERFACEIOINT pIfIo = VDIfIoIntGet(pVDIfsImage);
    AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER);

    if (   !VALID_PTR(pszFilename)
        || !*pszFilename)
    {
        rc = VERR_INVALID_PARAMETER;
        goto out;
    }

    pszSuffix = RTPathSuffix(pszFilename);

    /*
     * Open the file and read the footer.
     */
    rc = vdIfIoIntFileOpen(pIfIo, pszFilename,
                           VDOpenFlagsToFileOpenFlags(VD_OPEN_FLAGS_READONLY,
                                                      false /* fCreate */),
                           &pStorage);
    if (RT_SUCCESS(rc))
        rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile);

    /* Try to guess the image type based on the extension. */
    if (   RT_SUCCESS(rc)
        && pszSuffix)
    {
        if (   !RTStrICmp(pszSuffix, ".iso")
            || !RTStrICmp(pszSuffix, ".cdr")) /* DVD images. */
        {
            /* Note that there are ISO images smaller than 1 MB; it is impossible to distinguish
             * between raw floppy and CD images based on their size (and cannot be reliably done
             * based on contents, either).
             */
            if (cbFile % 2048)
                rc = VERR_VD_RAW_SIZE_MODULO_2048;
            else if (cbFile <= 32768)
                rc = VERR_VD_RAW_SIZE_OPTICAL_TOO_SMALL;
            else
            {
                *penmType = VDTYPE_DVD;
                rc = VINF_SUCCESS;
            }
        }
        else if (   !RTStrICmp(pszSuffix, ".img")
                 || !RTStrICmp(pszSuffix, ".ima")
                 || !RTStrICmp(pszSuffix, ".dsk")
                 || !RTStrICmp(pszSuffix, ".flp")
                 || !RTStrICmp(pszSuffix, ".vfd")) /* Floppy images */
        {
            if (cbFile % 512)
                rc = VERR_VD_RAW_SIZE_MODULO_512;
            else if (cbFile > RAW_MAX_FLOPPY_IMG_SIZE)
                rc = VERR_VD_RAW_SIZE_FLOPPY_TOO_BIG;
            else
            {
                *penmType = VDTYPE_FLOPPY;
                rc = VINF_SUCCESS;
            }
        }
        else
            rc = VERR_VD_RAW_INVALID_HEADER;
    }
    else
        rc = VERR_VD_RAW_INVALID_HEADER;

    if (pStorage)
        vdIfIoIntFileClose(pIfIo, pStorage);

out:
    LogFlowFunc(("returns %Rrc\n", rc));
    return rc;
}
示例#4
0
文件: RAW.cpp 项目: miguelinux/vbox
/**
 * Internal: Create a raw image.
 */
static int rawCreateImage(PRAWIMAGE pImage, uint64_t cbSize,
                          unsigned uImageFlags, const char *pszComment,
                          PCVDGEOMETRY pPCHSGeometry,
                          PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
                          PFNVDPROGRESS pfnProgress, void *pvUser,
                          unsigned uPercentStart, unsigned uPercentSpan)
{
    int rc;
    RTFOFF cbFree = 0;
    int32_t fOpen;

    uImageFlags |= VD_IMAGE_FLAGS_FIXED;

    pImage->uOpenFlags = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;

    pImage->uImageFlags = uImageFlags;
    pImage->fCreate = true;
    pImage->PCHSGeometry = *pPCHSGeometry;
    pImage->LCHSGeometry = *pLCHSGeometry;

    pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
    pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
    AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);

    if (uImageFlags & VD_IMAGE_FLAGS_DIFF)
    {
        rc = vdIfError(pImage->pIfError, VERR_VD_RAW_INVALID_TYPE, RT_SRC_POS, N_("Raw: cannot create diff image '%s'"), pImage->pszFilename);
        goto out;
    }

    /* Create image file. */
    fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
    if (uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)
        fOpen &= ~RTFILE_O_READ;
    rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
    if (RT_FAILURE(rc))
    {
        rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: cannot create image '%s'"), pImage->pszFilename);
        goto out;
    }

    if (!(uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
    {
        /* Check the free space on the disk and leave early if there is not
         * sufficient space available. */
        rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
        if (RT_SUCCESS(rc) /* ignore errors */ && ((uint64_t)cbFree < cbSize))
        {
            rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS, N_("Raw: disk would overflow creating image '%s'"), pImage->pszFilename);
            goto out;
        }

        /* Allocate & commit whole file if fixed image, it must be more
         * effective than expanding file by write operations. */
        rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pImage->pStorage, cbSize,
                                            0 /* fFlags */, pfnProgress, pvUser, uPercentStart, uPercentSpan);
    }

    if (RT_SUCCESS(rc) && pfnProgress)
        pfnProgress(pvUser, uPercentStart + uPercentSpan * 98 / 100);

    pImage->cbSize = cbSize;

    rc = rawFlushImage(pImage);

out:

    if (RT_SUCCESS(rc) && pfnProgress)
        pfnProgress(pvUser, uPercentStart + uPercentSpan);

    if (RT_FAILURE(rc))
        rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
    return rc;
}
示例#5
0
/**
 * Internal: Create a raw image.
 */
static int rawCreateImage(PRAWIMAGE pImage, uint64_t cbSize,
                          unsigned uImageFlags, const char *pszComment,
                          PCVDGEOMETRY pPCHSGeometry,
                          PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
                          PFNVDPROGRESS pfnProgress, void *pvUser,
                          unsigned uPercentStart, unsigned uPercentSpan)
{
    int rc;
    RTFOFF cbFree = 0;
    uint64_t uOff;
    void *pvBuf = NULL;
    int32_t fOpen;

    uImageFlags |= VD_IMAGE_FLAGS_FIXED;

    pImage->uOpenFlags = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;

    pImage->uImageFlags = uImageFlags;
    pImage->fCreate = true;
    pImage->PCHSGeometry = *pPCHSGeometry;
    pImage->LCHSGeometry = *pLCHSGeometry;

    pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
    pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
    AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);

    if (uImageFlags & VD_IMAGE_FLAGS_DIFF)
    {
        rc = vdIfError(pImage->pIfError, VERR_VD_RAW_INVALID_TYPE, RT_SRC_POS, N_("Raw: cannot create diff image '%s'"), pImage->pszFilename);
        goto out;
    }

    /* Create image file. */
    fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
    if (uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)
        fOpen &= ~RTFILE_O_READ;
    rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
    if (RT_FAILURE(rc))
    {
        rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: cannot create image '%s'"), pImage->pszFilename);
        goto out;
    }

    if (!(uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
    {
        /* Check the free space on the disk and leave early if there is not
         * sufficient space available. */
        rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
        if (RT_SUCCESS(rc) /* ignore errors */ && ((uint64_t)cbFree < cbSize))
        {
            rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS, N_("Raw: disk would overflow creating image '%s'"), pImage->pszFilename);
            goto out;
        }

        /* Allocate & commit whole file if fixed image, it must be more
         * effective than expanding file by write operations. */
        rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, cbSize);
        if (RT_FAILURE(rc))
        {
            rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: setting image size failed for '%s'"), pImage->pszFilename);
            goto out;
        }

        /* Fill image with zeroes. We do this for every fixed-size image since
         * on some systems (for example Windows Vista), it takes ages to write
         * a block near the end of a sparse file and the guest could complain
         * about an ATA timeout. */
        pvBuf = RTMemTmpAllocZ(RAW_FILL_SIZE);
        if (!pvBuf)
        {
            rc = VERR_NO_MEMORY;
            goto out;
        }

        uOff = 0;
        /* Write data to all image blocks. */
        while (uOff < cbSize)
        {
            unsigned cbChunk = (unsigned)RT_MIN(cbSize, RAW_FILL_SIZE);

            rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, uOff,
                                        pvBuf, cbChunk, NULL);
            if (RT_FAILURE(rc))
            {
                rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: writing block failed for '%s'"), pImage->pszFilename);
                goto out;
            }

            uOff += cbChunk;

            if (pfnProgress)
            {
                rc = pfnProgress(pvUser,
                                 uPercentStart + uOff * uPercentSpan * 98 / (cbSize * 100));
                if (RT_FAILURE(rc))
                    goto out;
            }
        }
    }

    if (RT_SUCCESS(rc) && pfnProgress)
        pfnProgress(pvUser, uPercentStart + uPercentSpan * 98 / 100);

    pImage->cbSize = cbSize;

    rc = rawFlushImage(pImage);

out:
    if (pvBuf)
        RTMemTmpFree(pvBuf);

    if (RT_SUCCESS(rc) && pfnProgress)
        pfnProgress(pvUser, uPercentStart + uPercentSpan);

    if (RT_FAILURE(rc))
        rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
    return rc;
}
示例#6
0
/**
 * Internal: Create a raw image.
 */
static int rawCreateImage(PRAWIMAGE pImage, uint64_t cbSize,
                          unsigned uImageFlags, const char *pszComment,
                          PCVDGEOMETRY pPCHSGeometry,
                          PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
                          PVDINTERFACEPROGRESS pIfProgress,
                          unsigned uPercentStart, unsigned uPercentSpan)
{
    RT_NOREF1(pszComment);
    int rc = VINF_SUCCESS;

    pImage->fCreate      = true;
    pImage->uOpenFlags   = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;
    pImage->uImageFlags  = uImageFlags | VD_IMAGE_FLAGS_FIXED;
    pImage->PCHSGeometry = *pPCHSGeometry;
    pImage->LCHSGeometry = *pLCHSGeometry;
    pImage->pIfError     = VDIfErrorGet(pImage->pVDIfsDisk);
    pImage->pIfIo        = VDIfIoIntGet(pImage->pVDIfsImage);
    AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);

    if (!(pImage->uImageFlags & VD_IMAGE_FLAGS_DIFF))
    {
        /* Create image file. */
        uint32_t fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
        if (uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)
            fOpen &= ~RTFILE_O_READ;
        rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
        if (RT_SUCCESS(rc))
        {
            if (!(uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
            {
                RTFOFF cbFree = 0;

                /* Check the free space on the disk and leave early if there is not
                 * sufficient space available. */
                rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
                if (RT_FAILURE(rc) /* ignore errors */ || ((uint64_t)cbFree >= cbSize))
                {
                    rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pImage->pStorage, cbSize, 0 /* fFlags */,
                                                        pIfProgress, uPercentStart, uPercentSpan);
                    if (RT_SUCCESS(rc))
                    {
                        vdIfProgress(pIfProgress, uPercentStart + uPercentSpan * 98 / 100);

                        pImage->cbSize = cbSize;
                        rc = rawFlushImage(pImage);
                    }
                }
                else
                    rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS, N_("Raw: disk would overflow creating image '%s'"), pImage->pszFilename);
            }
        }
        else
            rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: cannot create image '%s'"), pImage->pszFilename);
    }
    else
        rc = vdIfError(pImage->pIfError, VERR_VD_RAW_INVALID_TYPE, RT_SRC_POS, N_("Raw: cannot create diff image '%s'"), pImage->pszFilename);

    if (RT_SUCCESS(rc))
        vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);

    if (RT_FAILURE(rc))
        rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
    return rc;
}
示例#7
0
/**
 * Internal: Create a parallels image.
 */
static int parallelsCreateImage(PPARALLELSIMAGE pImage, uint64_t cbSize,
                                unsigned uImageFlags, const char *pszComment,
                                PCVDGEOMETRY pPCHSGeometry,
                                PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
                                PFNVDPROGRESS pfnProgress, void *pvUser,
                                unsigned uPercentStart, unsigned uPercentSpan)
{
    int rc = VINF_SUCCESS;
    int32_t fOpen;

    if (uImageFlags & VD_IMAGE_FLAGS_FIXED)
    {
        rc = vdIfError(pImage->pIfError, VERR_VD_INVALID_TYPE, RT_SRC_POS, N_("Parallels: cannot create fixed image '%s'. Create a raw image"), pImage->pszFilename);
        goto out;
    }

    pImage->uOpenFlags   = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;
    pImage->uImageFlags  = uImageFlags;
    pImage->PCHSGeometry = *pPCHSGeometry;
    pImage->LCHSGeometry = *pLCHSGeometry;

    if (!pImage->PCHSGeometry.cCylinders)
    {
        /* Set defaults. */
        pImage->PCHSGeometry.cSectors   = 63;
        pImage->PCHSGeometry.cHeads     = 16;
        pImage->PCHSGeometry.cCylinders = pImage->cbSize / (512 * pImage->PCHSGeometry.cSectors * pImage->PCHSGeometry.cHeads);
    }

    pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
    pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
    AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);

    /* Create image file. */
    fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
    rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
    if (RT_FAILURE(rc))
    {
        rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Parallels: cannot create image '%s'"), pImage->pszFilename);
        goto out;
    }

    if (RT_SUCCESS(rc) && pfnProgress)
        pfnProgress(pvUser, uPercentStart + uPercentSpan * 98 / 100);

    /* Setup image state. */
    pImage->cbSize                   = cbSize;
    pImage->cAllocationBitmapEntries = cbSize / 512 / pImage->PCHSGeometry.cSectors;
    if (pImage->cAllocationBitmapEntries * pImage->PCHSGeometry.cSectors * 512 < cbSize)
        pImage->cAllocationBitmapEntries++;
    pImage->fAllocationBitmapChanged = true;
    pImage->cbFileCurrent            = sizeof(ParallelsHeader) + pImage->cAllocationBitmapEntries * sizeof(uint32_t);
    /* Round to next sector boundary. */
    pImage->cbFileCurrent           += 512 - pImage->cbFileCurrent % 512;
    Assert(!(pImage->cbFileCurrent % 512));
    pImage->pAllocationBitmap        = (uint32_t *)RTMemAllocZ(pImage->cAllocationBitmapEntries * sizeof(uint32_t));
    if (!pImage->pAllocationBitmap)
        rc = VERR_NO_MEMORY;

    if (RT_SUCCESS(rc))
    {
        ParallelsHeader Header;

        memcpy(Header.HeaderIdentifier, PARALLELS_HEADER_MAGIC, sizeof(Header.HeaderIdentifier));
        Header.uVersion                   = RT_H2LE_U32(PARALLELS_DISK_VERSION);
        Header.cHeads                     = RT_H2LE_U32(pImage->PCHSGeometry.cHeads);
        Header.cCylinders                 = RT_H2LE_U32(pImage->PCHSGeometry.cCylinders);
        Header.cSectorsPerTrack           = RT_H2LE_U32(pImage->PCHSGeometry.cSectors);
        Header.cEntriesInAllocationBitmap = RT_H2LE_U32(pImage->cAllocationBitmapEntries);
        Header.cSectors                   = RT_H2LE_U32(pImage->cbSize / 512);
        memset(Header.Padding, 0, sizeof(Header.Padding));

        /* Write header and allocation bitmap. */
        rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, pImage->cbFileCurrent);
        if (RT_SUCCESS(rc))
            rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, 0,
                                        &Header, sizeof(Header), NULL);
        if (RT_SUCCESS(rc))
            rc = parallelsFlushImage(pImage); /* Writes the allocation bitmap. */
    }

out:
    if (RT_SUCCESS(rc) && pfnProgress)
        pfnProgress(pvUser, uPercentStart + uPercentSpan);

    if (RT_FAILURE(rc))
        parallelsFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
    return rc;
}
示例#8
0
static int parallelsOpenImage(PPARALLELSIMAGE pImage, unsigned uOpenFlags)
{
    int rc = VINF_SUCCESS;
    ParallelsHeader parallelsHeader;

    pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
    pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
    AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);

    rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
                           VDOpenFlagsToFileOpenFlags(uOpenFlags,
                                                      false /* fCreate */),
                           &pImage->pStorage);
    if (RT_FAILURE(rc))
        goto out;

    rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &pImage->cbFileCurrent);
    if (RT_FAILURE(rc))
        goto out;
    AssertMsg(pImage->cbFileCurrent % 512 == 0, ("File size is not a multiple of 512\n"));

    rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, 0,
                               &parallelsHeader, sizeof(parallelsHeader), NULL);
    if (RT_FAILURE(rc))
        goto out;

    if (memcmp(parallelsHeader.HeaderIdentifier, PARALLELS_HEADER_MAGIC, 16))
    {
        /* Check if the file has hdd as extension. It is a fixed size raw image then. */
        char *pszExtension = RTPathExt(pImage->pszFilename);
        if (strcmp(pszExtension, ".hdd"))
        {
            rc = VERR_VD_PARALLELS_INVALID_HEADER;
            goto out;
        }

        /* This is a fixed size image. */
        pImage->uImageFlags |= VD_IMAGE_FLAGS_FIXED;
        pImage->cbSize = pImage->cbFileCurrent;

        pImage->PCHSGeometry.cHeads     = 16;
        pImage->PCHSGeometry.cSectors   = 63;
        uint64_t cCylinders = pImage->cbSize / (512 * pImage->PCHSGeometry.cSectors * pImage->PCHSGeometry.cHeads);
        pImage->PCHSGeometry.cCylinders = (uint32_t)cCylinders;
    }
    else
    {
        if (parallelsHeader.uVersion != PARALLELS_DISK_VERSION)
        {
            rc = VERR_NOT_SUPPORTED;
            goto out;
        }

        if (parallelsHeader.cEntriesInAllocationBitmap > (1 << 30))
        {
            rc = VERR_NOT_SUPPORTED;
            goto out;
        }

        Log(("cSectors=%u\n", parallelsHeader.cSectors));
        pImage->cbSize = ((uint64_t)parallelsHeader.cSectors) * 512;
        pImage->uImageFlags = VD_IMAGE_FLAGS_NONE;
        pImage->cAllocationBitmapEntries = parallelsHeader.cEntriesInAllocationBitmap;
        pImage->pAllocationBitmap = (uint32_t *)RTMemAllocZ((uint32_t)pImage->cAllocationBitmapEntries * sizeof(uint32_t));
        if (!pImage->pAllocationBitmap)
        {
            rc = VERR_NO_MEMORY;
            goto out;
        }

        rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage,
                                   sizeof(ParallelsHeader), pImage->pAllocationBitmap,
                                   pImage->cAllocationBitmapEntries * sizeof(uint32_t),
                                   NULL);
        if (RT_FAILURE(rc))
            goto out;

        pImage->PCHSGeometry.cCylinders = parallelsHeader.cCylinders;
        pImage->PCHSGeometry.cHeads     = parallelsHeader.cHeads;
        pImage->PCHSGeometry.cSectors   = parallelsHeader.cSectorsPerTrack;
    }

out:
    LogFlowFunc(("returns %Rrc\n", rc));
    return rc;
}