/**
* 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;
}
/** @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, ¶llelsHeader,
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;
}
/** @copydoc VDIMAGEBACKEND::pfnGetFileSize */
static DECLCALLBACK(uint64_t) rawGetFileSize(void *pBackendData)
{
LogFlowFunc(("pBackendData=%#p\n", pBackendData));
PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
AssertPtrReturn(pImage, 0);
uint64_t cbFile = 0;
if (pImage->pStorage)
{
int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
if (RT_FAILURE(rc))
cbFile = 0; /* Make sure it is 0 */
}
LogFlowFunc(("returns %lld\n", cbFile));
return cbFile;
}
/** @copydoc VBOXHDDBACKEND::pfnGetFileSize */
static DECLCALLBACK(uint64_t) rawGetFileSize(void *pBackendData)
{
LogFlowFunc(("pBackendData=%#p\n", pBackendData));
PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
uint64_t cb = 0;
AssertPtr(pImage);
if (pImage)
{
uint64_t cbFile;
if (pImage->pStorage)
{
int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
if (RT_SUCCESS(rc))
cb += cbFile;
}
}
LogFlowFunc(("returns %lld\n", cb));
return cb;
}
/** @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;
}
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,
¶llelsHeader, 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;
}
