diff options
Diffstat (limited to 'src/VBox/Storage/RAW.cpp')
| -rw-r--r-- | src/VBox/Storage/RAW.cpp | 1223 |
1 files changed, 1223 insertions, 0 deletions
diff --git a/src/VBox/Storage/RAW.cpp b/src/VBox/Storage/RAW.cpp new file mode 100644 index 00000000..5a09eb44 --- /dev/null +++ b/src/VBox/Storage/RAW.cpp @@ -0,0 +1,1223 @@ +/* $Id: RAW.cpp $ */ +/** @file + * RawHDDCore - Raw Disk image, Core Code. + */ + +/* + * Copyright (C) 2006-2022 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>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_VD_RAW +#include <VBox/vd-plugin.h> +#include <VBox/err.h> + +#include <VBox/log.h> +#include <iprt/assert.h> +#include <iprt/alloc.h> +#include <iprt/path.h> +#include <iprt/formats/iso9660.h> +#include <iprt/formats/udf.h> + +#include "VDBackends.h" +#include "VDBackendsInline.h" + + +/********************************************************************************************************************************* +* Constants And Macros, Structures and Typedefs * +*********************************************************************************************************************************/ + +/** + * Raw image data structure. + */ +typedef struct RAWIMAGE +{ + /** Image name. */ + const char *pszFilename; + /** Storage handle. */ + PVDIOSTORAGE pStorage; + + /** Pointer to the per-disk VD interface list. */ + PVDINTERFACE pVDIfsDisk; + /** Pointer to the per-image VD interface list. */ + PVDINTERFACE pVDIfsImage; + /** Error interface. */ + PVDINTERFACEERROR pIfError; + /** I/O interface. */ + PVDINTERFACEIOINT pIfIo; + + /** Open flags passed by VBoxHD layer. */ + unsigned uOpenFlags; + /** Image flags defined during creation or determined during open. */ + unsigned uImageFlags; + /** Total size of the image. */ + uint64_t cbSize; + /** Position in the image (only truly used for sequential access). */ + uint64_t offAccess; + /** Flag if this is a newly created image. */ + bool fCreate; + /** Physical geometry of this image. */ + VDGEOMETRY PCHSGeometry; + /** Logical geometry of this image. */ + VDGEOMETRY LCHSGeometry; + /** Sector size of the image. */ + uint32_t cbSector; + /** The static region list. */ + VDREGIONLIST RegionList; +} RAWIMAGE, *PRAWIMAGE; + + +/** Size of write operations when filling an image with zeroes. */ +#define RAW_FILL_SIZE (128 * _1K) + +/** The maximum reasonable size of a floppy image (big format 2.88MB medium). */ +#define RAW_MAX_FLOPPY_IMG_SIZE (512 * 82 * 48 * 2) + + +/********************************************************************************************************************************* +* Static Variables * +*********************************************************************************************************************************/ + +/** NULL-terminated array of supported file extensions. */ +static const VDFILEEXTENSION s_aRawFileExtensions[] = +{ + {"iso", VDTYPE_OPTICAL_DISC}, + {"cdr", VDTYPE_OPTICAL_DISC}, + {"img", VDTYPE_FLOPPY}, + {"ima", VDTYPE_FLOPPY}, + {"dsk", VDTYPE_FLOPPY}, + {"flp", VDTYPE_FLOPPY}, + {"vfd", VDTYPE_FLOPPY}, + {NULL, VDTYPE_INVALID} +}; + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ + +/** + * Internal. Flush image data to disk. + */ +static int rawFlushImage(PRAWIMAGE pImage) +{ + int rc = VINF_SUCCESS; + + if ( pImage->pStorage + && !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)) + rc = vdIfIoIntFileFlushSync(pImage->pIfIo, pImage->pStorage); + + return rc; +} + +/** + * Internal. Free all allocated space for representing an image except pImage, + * and optionally delete the image from disk. + */ +static int rawFreeImage(PRAWIMAGE pImage, bool fDelete) +{ + int rc = VINF_SUCCESS; + + /* Freeing a never allocated image (e.g. because the open failed) is + * not signalled as an error. After all nothing bad happens. */ + if (pImage) + { + if (pImage->pStorage) + { + /* No point updating the file that is deleted anyway. */ + if (!fDelete) + { + /* For newly created images in sequential mode fill it to + * the nominal size. */ + if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL + && !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY) + && pImage->fCreate) + { + /* Fill rest of image with zeroes, a must for sequential + * images to reach the nominal size. */ + uint64_t uOff; + void *pvBuf = RTMemTmpAllocZ(RAW_FILL_SIZE); + if (RT_LIKELY(pvBuf)) + { + uOff = pImage->offAccess; + /* Write data to all image blocks. */ + while (uOff < pImage->cbSize) + { + unsigned cbChunk = (unsigned)RT_MIN(pImage->cbSize - uOff, + RAW_FILL_SIZE); + + rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, + uOff, pvBuf, cbChunk); + if (RT_FAILURE(rc)) + break; + + uOff += cbChunk; + } + + RTMemTmpFree(pvBuf); + } + else + rc = VERR_NO_MEMORY; + } + rawFlushImage(pImage); + } + + rc = vdIfIoIntFileClose(pImage->pIfIo, pImage->pStorage); + pImage->pStorage = NULL; + } + + if (fDelete && pImage->pszFilename) + vdIfIoIntFileDelete(pImage->pIfIo, pImage->pszFilename); + } + + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** + * 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_SUCCESS(rc)) + { + PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0]; + pImage->RegionList.fFlags = 0; + pImage->RegionList.cRegions = 1; + + pRegion->offRegion = 0; /* Disk start. */ + pRegion->cbBlock = pImage->cbSector; + pRegion->enmDataForm = VDREGIONDATAFORM_RAW; + pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE; + pRegion->cbData = pImage->cbSector; + pRegion->cbMetadata = 0; + pRegion->cRegionBlocksOrBytes = pImage->cbSize; + } + else + rawFreeImage(pImage, false); + return rc; +} + +/** + * 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 = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, cbSize); + if (RT_SUCCESS(rc)) + pImage->cbSize = cbSize; + } + } + 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)) + { + PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0]; + pImage->RegionList.fFlags = 0; + pImage->RegionList.cRegions = 1; + + pRegion->offRegion = 0; /* Disk start. */ + pRegion->cbBlock = pImage->cbSector; + pRegion->enmDataForm = VDREGIONDATAFORM_RAW; + pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE; + pRegion->cbData = pImage->cbSector; + pRegion->cbMetadata = 0; + pRegion->cRegionBlocksOrBytes = pImage->cbSize; + + vdIfProgress(pIfProgress, uPercentStart + uPercentSpan); + } + + if (RT_FAILURE(rc)) + rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS); + return rc; +} + +/** + * Worker for rawProbe that checks if the file looks like it contains an ISO + * 9660 or UDF descriptor sequence at the expected offset. + * + * Caller already checked if the size is suitable for ISOs. + * + * @returns IPRT status code. Success if detected ISO 9660 or UDF, failure if + * not. + * + * @note Code is a modified version of rtFsIsoVolTryInit() IPRT (isovfs.cpp). + */ +static int rawProbeIsIso9660OrUdf(PVDINTERFACEIOINT pIfIo, PVDIOSTORAGE pStorage) +{ + PRTERRINFO pErrInfo = NULL; + const uint32_t cbSector = _2K; + + union + { + uint8_t ab[_2K]; + ISO9660VOLDESCHDR VolDescHdr; + } Buf; + Assert(cbSector <= sizeof(Buf)); + RT_ZERO(Buf); + + uint8_t uUdfLevel = 0; + uint64_t offUdfBootVolDesc = UINT64_MAX; + + uint32_t cPrimaryVolDescs = 0; + uint32_t cSupplementaryVolDescs = 0; + uint32_t cBootRecordVolDescs = 0; + uint32_t offVolDesc = 16 * cbSector; + enum + { + kStateStart = 0, + kStateNoSeq, + kStateCdSeq, + kStateUdfSeq + } enmState = kStateStart; + for (uint32_t iVolDesc = 0; ; iVolDesc++, offVolDesc += cbSector) + { + if (iVolDesc > 32) + return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "More than 32 volume descriptors, doesn't seem right..."); + + /* Read the next one and check the signature. */ + int rc = vdIfIoIntFileReadSync(pIfIo, pStorage, offVolDesc, &Buf, cbSector); + if (RT_FAILURE(rc)) + return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Unable to read volume descriptor #%u", iVolDesc); + +#define MATCH_STD_ID(a_achStdId1, a_szStdId2) \ + ( (a_achStdId1)[0] == (a_szStdId2)[0] \ + && (a_achStdId1)[1] == (a_szStdId2)[1] \ + && (a_achStdId1)[2] == (a_szStdId2)[2] \ + && (a_achStdId1)[3] == (a_szStdId2)[3] \ + && (a_achStdId1)[4] == (a_szStdId2)[4] ) +#define MATCH_HDR(a_pStd, a_bType2, a_szStdId2, a_bVer2) \ + ( MATCH_STD_ID((a_pStd)->achStdId, a_szStdId2) \ + && (a_pStd)->bDescType == (a_bType2) \ + && (a_pStd)->bDescVersion == (a_bVer2) ) + + /* + * ISO 9660 ("CD001"). + */ + if ( ( enmState == kStateStart + || enmState == kStateCdSeq + || enmState == kStateNoSeq) + && MATCH_STD_ID(Buf.VolDescHdr.achStdId, ISO9660VOLDESC_STD_ID) ) + { + enmState = kStateCdSeq; + + /* Do type specific handling. */ + Log(("RAW/ISO9660: volume desc #%u: type=%#x\n", iVolDesc, Buf.VolDescHdr.bDescType)); + if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_PRIMARY) + { + cPrimaryVolDescs++; + if (Buf.VolDescHdr.bDescVersion != ISO9660PRIMARYVOLDESC_VERSION) + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, + "Unsupported primary volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion); + if (cPrimaryVolDescs == 1) + { /*rc = rtFsIsoVolHandlePrimaryVolDesc(pThis, &Buf.PrimaryVolDesc, offVolDesc, &RootDir, &offRootDirRec, pErrInfo);*/ } + else if (cPrimaryVolDescs == 2) + Log(("RAW/ISO9660: ignoring 2nd primary descriptor\n")); /* so we can read the w2k3 ifs kit */ + else + return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one primary volume descriptor"); + } + else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_SUPPLEMENTARY) + { + cSupplementaryVolDescs++; + if (Buf.VolDescHdr.bDescVersion != ISO9660SUPVOLDESC_VERSION) + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, + "Unsupported supplemental volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion); + /*rc = rtFsIsoVolHandleSupplementaryVolDesc(pThis, &Buf.SupVolDesc, offVolDesc, &bJolietUcs2Level, &JolietRootDir, + &offJolietRootDirRec, pErrInfo);*/ + } + else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_BOOT_RECORD) + { + cBootRecordVolDescs++; + } + else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_TERMINATOR) + { + if (!cPrimaryVolDescs) + return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "No primary volume descriptor"); + enmState = kStateNoSeq; + } + else + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, + "Unknown volume descriptor: %#x", Buf.VolDescHdr.bDescType); + } + /* + * UDF volume recognition sequence (VRS). + */ + else if ( ( enmState == kStateNoSeq + || enmState == kStateStart) + && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BEGIN, UDF_EXT_VOL_DESC_VERSION) ) + { + if (uUdfLevel == 0) + enmState = kStateUdfSeq; + else + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BEA01 sequence is supported"); + } + else if ( enmState == kStateUdfSeq + && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_02, UDF_EXT_VOL_DESC_VERSION) ) + uUdfLevel = 2; + else if ( enmState == kStateUdfSeq + && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_03, UDF_EXT_VOL_DESC_VERSION) ) + uUdfLevel = 3; + else if ( enmState == kStateUdfSeq + && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BOOT, UDF_EXT_VOL_DESC_VERSION) ) + { + if (offUdfBootVolDesc == UINT64_MAX) + offUdfBootVolDesc = iVolDesc * cbSector; + else + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BOOT2 descriptor is supported"); + } + else if ( enmState == kStateUdfSeq + && MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_TERM, UDF_EXT_VOL_DESC_VERSION) ) + { + if (uUdfLevel != 0) + enmState = kStateNoSeq; + else + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Found BEA01 & TEA01, but no NSR02 or NSR03 descriptors"); + } + /* + * Unknown, probably the end. + */ + else if (enmState == kStateNoSeq) + break; + else if (enmState == kStateStart) + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT, + "Not ISO? Unable to recognize volume descriptor signature: %.5Rhxs", Buf.VolDescHdr.achStdId); + else if (enmState == kStateCdSeq) + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, + "Missing ISO 9660 terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId); + else if (enmState == kStateUdfSeq) + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, + "Missing UDF terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId); + else + return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT, + "Unknown volume descriptor signature found at sector %u: %.5Rhxs", + 16 + iVolDesc, Buf.VolDescHdr.achStdId); + } + + return VINF_SUCCESS; +} + +/** + * Checks the given extension array for the given suffix and type. + * + * @returns true if found in the list, false if not. + * @param paExtensions The extension array to check against. + * @param pszSuffix The suffix to look for. Can be NULL. + * @param enmType The image type to look for. + */ +static bool rawProbeContainsExtension(const VDFILEEXTENSION *paExtensions, const char *pszSuffix, VDTYPE enmType) +{ + if (pszSuffix) + { + if (*pszSuffix == '.') + pszSuffix++; + if (*pszSuffix != '\0') + { + for (size_t i = 0;; i++) + { + if (!paExtensions[i].pszExtension) + break; + if ( paExtensions[i].enmType == enmType + && RTStrICmpAscii(paExtensions[i].pszExtension, pszSuffix) == 0) + return true; + } + } + } + return false; +} + + +/** @copydoc VDIMAGEBACKEND::pfnProbe */ +static DECLCALLBACK(int) rawProbe(const char *pszFilename, PVDINTERFACE pVDIfsDisk, + PVDINTERFACE pVDIfsImage, VDTYPE enmDesiredType, VDTYPE *penmType) +{ + RT_NOREF(pVDIfsDisk, enmDesiredType); + LogFlowFunc(("pszFilename=\"%s\" pVDIfsDisk=%#p pVDIfsImage=%#p\n", pszFilename, pVDIfsDisk, pVDIfsImage)); + PVDIOSTORAGE pStorage = NULL; + PVDINTERFACEIOINT pIfIo = VDIfIoIntGet(pVDIfsImage); + + AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER); + AssertPtrReturn(pszFilename, VERR_INVALID_POINTER); + AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER); + + /* + * Open the file and read the footer. + */ + int rc = vdIfIoIntFileOpen(pIfIo, pszFilename, + VDOpenFlagsToFileOpenFlags(VD_OPEN_FLAGS_READONLY, + false /* fCreate */), + &pStorage); + if (RT_SUCCESS(rc)) + { + uint64_t cbFile; + rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile); + if (RT_SUCCESS(rc)) + { + /* + * Detecting raw ISO and floppy images and keeping them apart isn't all + * that simple. + * + * - Both must be a multiple of their sector sizes, though + * that means that any ISO can also be a floppy, since 2048 is 512 * 4. + * - The ISO images must be 32KB and floppies are generally not larger + * than 2.88MB, but that leaves quite a bit of size overlap, + * + * So, the size cannot conclusively say whether something is one or the other. + * + * - The content of a normal ISO image is detectable, but not all ISO + * images need to follow that spec to work in a DVD ROM drive. + * - It is common for ISO images to start like a floppy with a boot sector + * at the very start of the image. + * - Floppies doesn't need to contain a DOS-style boot sector, it depends + * on the system it is formatted and/or intended for. + * + * So, the content cannot conclusively determine the type either. + * + * However, there are a number of cases, especially for ISOs, where we can + * say we a deal of confidence that something is an ISO image. + */ + const char * const pszSuffix = RTPathSuffix(pszFilename); + + /* + * Start by checking for sure signs of an ISO 9660 / UDF image. + */ + rc = VERR_VD_RAW_INVALID_HEADER; + if ( (enmDesiredType == VDTYPE_INVALID || enmDesiredType == VDTYPE_OPTICAL_DISC) + && (cbFile % 2048) == 0 + && cbFile > 32768) + { + int rc2 = rawProbeIsIso9660OrUdf(pIfIo, pStorage); + if (RT_SUCCESS(rc2)) + { + /* *puScore = VDPROBE_SCORE_HIGH; */ + *penmType = VDTYPE_OPTICAL_DISC; + rc = VINF_SUCCESS; + } + /* If that didn't work out, check by extension (the old way): */ + else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_OPTICAL_DISC)) + { + /* *puScore = VDPROBE_SCORE_LOW; */ + *penmType = VDTYPE_OPTICAL_DISC; + rc = VINF_SUCCESS; + } + } + + /* + * We could do something similar for floppies, i.e. check for a + * DOS'ish boot sector and thereby get a good match on most of the + * relevant floppy images out there. + */ + if ( RT_FAILURE(rc) + && (enmDesiredType == VDTYPE_INVALID || enmDesiredType == VDTYPE_FLOPPY) + && (cbFile % 512) == 0 + && cbFile >= 512 + && cbFile <= RAW_MAX_FLOPPY_IMG_SIZE) + { + /** @todo check if the content is DOSish. */ + if (false) + { + /* *puScore = VDPROBE_SCORE_HIGH; */ + *penmType = VDTYPE_FLOPPY; + rc = VINF_SUCCESS; + } + else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_FLOPPY)) + { + /* *puScore = VDPROBE_SCORE_LOW; */ + *penmType = VDTYPE_FLOPPY; + rc = VINF_SUCCESS; + } + } + + /* + * No luck? Go exclusively by extension like we've done since + * for ever and complain about the size if it doesn't fit expectations. + * We can get here if the desired type doesn't match the extension and such. + */ + if (RT_FAILURE(rc)) + { + if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_OPTICAL_DISC)) + { + if (cbFile % 2048) + rc = VERR_VD_RAW_SIZE_MODULO_2048; + else if (cbFile <= 32768) + rc = VERR_VD_RAW_SIZE_OPTICAL_TOO_SMALL; + else + { + Assert(enmDesiredType != VDTYPE_OPTICAL_DISC); + *penmType = VDTYPE_OPTICAL_DISC; + rc = VINF_SUCCESS; + } + } + else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_FLOPPY)) + { + 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 + { + Assert(cbFile == 0 || enmDesiredType != VDTYPE_FLOPPY); + *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); + + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnOpen */ +static DECLCALLBACK(int) rawOpen(const char *pszFilename, unsigned uOpenFlags, + PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage, + VDTYPE enmType, void **ppBackendData) +{ + LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x pVDIfsDisk=%#p pVDIfsImage=%#p enmType=%u ppBackendData=%#p\n", + pszFilename, uOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData)); + int rc; + PRAWIMAGE pImage; + + /* Check open flags. All valid flags are supported. */ + AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER); + AssertPtrReturn(pszFilename, VERR_INVALID_POINTER); + AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER); + + pImage = (PRAWIMAGE)RTMemAllocZ(RT_UOFFSETOF(RAWIMAGE, RegionList.aRegions[1])); + if (RT_LIKELY(pImage)) + { + pImage->pszFilename = pszFilename; + pImage->pStorage = NULL; + pImage->pVDIfsDisk = pVDIfsDisk; + pImage->pVDIfsImage = pVDIfsImage; + + if (enmType == VDTYPE_OPTICAL_DISC) + pImage->cbSector = 2048; + else + pImage->cbSector = 512; + + rc = rawOpenImage(pImage, uOpenFlags); + if (RT_SUCCESS(rc)) + *ppBackendData = pImage; + else + RTMemFree(pImage); + } + else + rc = VERR_NO_MEMORY; + + LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnCreate */ +static DECLCALLBACK(int) rawCreate(const char *pszFilename, uint64_t cbSize, + unsigned uImageFlags, const char *pszComment, + PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry, + PCRTUUID pUuid, unsigned uOpenFlags, + unsigned uPercentStart, unsigned uPercentSpan, + PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage, + PVDINTERFACE pVDIfsOperation, VDTYPE enmType, + void **ppBackendData) +{ + RT_NOREF1(pUuid); + LogFlowFunc(("pszFilename=\"%s\" cbSize=%llu uImageFlags=%#x pszComment=\"%s\" pPCHSGeometry=%#p pLCHSGeometry=%#p Uuid=%RTuuid uOpenFlags=%#x uPercentStart=%u uPercentSpan=%u pVDIfsDisk=%#p pVDIfsImage=%#p pVDIfsOperation=%#p enmType=%u ppBackendData=%#p", + pszFilename, cbSize, uImageFlags, pszComment, pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags, uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation, enmType, ppBackendData)); + + /* Check the VD container type. Yes, hard disk must be allowed, otherwise + * various tools using this backend for hard disk images will fail. */ + if (enmType != VDTYPE_HDD && enmType != VDTYPE_OPTICAL_DISC && enmType != VDTYPE_FLOPPY) + return VERR_VD_INVALID_TYPE; + + int rc = VINF_SUCCESS; + PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation); + + /* Check arguments. */ + AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER); + AssertPtrReturn(pszFilename, VERR_INVALID_POINTER); + AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER); + AssertPtrReturn(pPCHSGeometry, VERR_INVALID_POINTER); + AssertPtrReturn(pLCHSGeometry, VERR_INVALID_POINTER); + + PRAWIMAGE pImage = (PRAWIMAGE)RTMemAllocZ(RT_UOFFSETOF(RAWIMAGE, RegionList.aRegions[1])); + if (RT_LIKELY(pImage)) + { + pImage->pszFilename = pszFilename; + pImage->pStorage = NULL; + pImage->pVDIfsDisk = pVDIfsDisk; + pImage->pVDIfsImage = pVDIfsImage; + + rc = rawCreateImage(pImage, cbSize, uImageFlags, pszComment, + pPCHSGeometry, pLCHSGeometry, uOpenFlags, + pIfProgress, uPercentStart, uPercentSpan); + if (RT_SUCCESS(rc)) + { + /* So far the image is opened in read/write mode. Make sure the + * image is opened in read-only mode if the caller requested that. */ + if (uOpenFlags & VD_OPEN_FLAGS_READONLY) + { + rawFreeImage(pImage, false); + rc = rawOpenImage(pImage, uOpenFlags); + } + + if (RT_SUCCESS(rc)) + *ppBackendData = pImage; + } + + if (RT_FAILURE(rc)) + RTMemFree(pImage); + } + else + rc = VERR_NO_MEMORY; + + LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnRename */ +static DECLCALLBACK(int) rawRename(void *pBackendData, const char *pszFilename) +{ + LogFlowFunc(("pBackendData=%#p pszFilename=%#p\n", pBackendData, pszFilename)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + + AssertReturn((pImage && pszFilename && *pszFilename), VERR_INVALID_PARAMETER); + + /* Close the image. */ + int rc = rawFreeImage(pImage, false); + if (RT_SUCCESS(rc)) + { + /* Rename the file. */ + rc = vdIfIoIntFileMove(pImage->pIfIo, pImage->pszFilename, pszFilename, 0); + if (RT_SUCCESS(rc)) + { + /* Update pImage with the new information. */ + pImage->pszFilename = pszFilename; + + /* Open the old image with new name. */ + rc = rawOpenImage(pImage, pImage->uOpenFlags); + } + else + { + /* The move failed, try to reopen the original image. */ + int rc2 = rawOpenImage(pImage, pImage->uOpenFlags); + if (RT_FAILURE(rc2)) + rc = rc2; + } + } + + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnClose */ +static DECLCALLBACK(int) rawClose(void *pBackendData, bool fDelete) +{ + LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + int rc = rawFreeImage(pImage, fDelete); + RTMemFree(pImage); + + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnRead */ +static DECLCALLBACK(int) rawRead(void *pBackendData, uint64_t uOffset, size_t cbToRead, + PVDIOCTX pIoCtx, size_t *pcbActuallyRead) +{ + int rc = VINF_SUCCESS; + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + + /* For sequential access do not allow to go back. */ + if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL + && uOffset < pImage->offAccess) + { + *pcbActuallyRead = 0; + return VERR_INVALID_PARAMETER; + } + + rc = vdIfIoIntFileReadUser(pImage->pIfIo, pImage->pStorage, uOffset, + pIoCtx, cbToRead); + if (RT_SUCCESS(rc)) + { + *pcbActuallyRead = cbToRead; + pImage->offAccess = uOffset + cbToRead; + } + + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnWrite */ +static DECLCALLBACK(int) rawWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite, + PVDIOCTX pIoCtx, size_t *pcbWriteProcess, size_t *pcbPreRead, + size_t *pcbPostRead, unsigned fWrite) +{ + RT_NOREF1(fWrite); + int rc = VINF_SUCCESS; + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + + /* For sequential access do not allow to go back. */ + if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL + && uOffset < pImage->offAccess) + { + *pcbWriteProcess = 0; + *pcbPostRead = 0; + *pcbPreRead = 0; + return VERR_INVALID_PARAMETER; + } + + rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage, uOffset, + pIoCtx, cbToWrite, NULL, NULL); + if (RT_SUCCESS(rc)) + { + *pcbWriteProcess = cbToWrite; + *pcbPostRead = 0; + *pcbPreRead = 0; + pImage->offAccess = uOffset + cbToWrite; + } + + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnFlush */ +static DECLCALLBACK(int) rawFlush(void *pBackendData, PVDIOCTX pIoCtx) +{ + int rc = VINF_SUCCESS; + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + + if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)) + rc = vdIfIoIntFileFlush(pImage->pIfIo, pImage->pStorage, pIoCtx, + NULL, NULL); + + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnGetVersion */ +static DECLCALLBACK(unsigned) rawGetVersion(void *pBackendData) +{ + LogFlowFunc(("pBackendData=%#p\n", pBackendData)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + + AssertPtrReturn(pImage, 0); + + return 1; +} + +/** @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 VDIMAGEBACKEND::pfnGetPCHSGeometry */ +static DECLCALLBACK(int) rawGetPCHSGeometry(void *pBackendData, + PVDGEOMETRY pPCHSGeometry) +{ + LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + int rc = VINF_SUCCESS; + + AssertPtrReturn(pImage, VERR_VD_NOT_OPENED); + + if (pImage->PCHSGeometry.cCylinders) + *pPCHSGeometry = pImage->PCHSGeometry; + else + rc = VERR_VD_GEOMETRY_NOT_SET; + + LogFlowFunc(("returns %Rrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnSetPCHSGeometry */ +static DECLCALLBACK(int) rawSetPCHSGeometry(void *pBackendData, + PCVDGEOMETRY pPCHSGeometry) +{ + LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n", + pBackendData, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + int rc = VINF_SUCCESS; + + AssertPtrReturn(pImage, VERR_VD_NOT_OPENED); + + if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY) + rc = VERR_VD_IMAGE_READ_ONLY; + else + pImage->PCHSGeometry = *pPCHSGeometry; + + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnGetLCHSGeometry */ +static DECLCALLBACK(int) rawGetLCHSGeometry(void *pBackendData, + PVDGEOMETRY pLCHSGeometry) +{ + LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + int rc = VINF_SUCCESS; + + AssertPtrReturn(pImage, VERR_VD_NOT_OPENED); + + if (pImage->LCHSGeometry.cCylinders) + *pLCHSGeometry = pImage->LCHSGeometry; + else + rc = VERR_VD_GEOMETRY_NOT_SET; + + LogFlowFunc(("returns %Rrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnSetLCHSGeometry */ +static DECLCALLBACK(int) rawSetLCHSGeometry(void *pBackendData, + PCVDGEOMETRY pLCHSGeometry) +{ + LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n", + pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + int rc = VINF_SUCCESS; + + AssertPtrReturn(pImage, VERR_VD_NOT_OPENED); + + if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY) + rc = VERR_VD_IMAGE_READ_ONLY; + else + pImage->LCHSGeometry = *pLCHSGeometry; + + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnQueryRegions */ +static DECLCALLBACK(int) rawQueryRegions(void *pBackendData, PCVDREGIONLIST *ppRegionList) +{ + LogFlowFunc(("pBackendData=%#p ppRegionList=%#p\n", pBackendData, ppRegionList)); + PRAWIMAGE pThis = (PRAWIMAGE)pBackendData; + + AssertPtrReturn(pThis, VERR_VD_NOT_OPENED); + + *ppRegionList = &pThis->RegionList; + LogFlowFunc(("returns %Rrc\n", VINF_SUCCESS)); + return VINF_SUCCESS; +} + +/** @copydoc VDIMAGEBACKEND::pfnRegionListRelease */ +static DECLCALLBACK(void) rawRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList) +{ + RT_NOREF1(pRegionList); + LogFlowFunc(("pBackendData=%#p pRegionList=%#p\n", pBackendData, pRegionList)); + PRAWIMAGE pThis = (PRAWIMAGE)pBackendData; + AssertPtr(pThis); RT_NOREF(pThis); + + /* Nothing to do here. */ +} + +/** @copydoc VDIMAGEBACKEND::pfnGetImageFlags */ +static DECLCALLBACK(unsigned) rawGetImageFlags(void *pBackendData) +{ + LogFlowFunc(("pBackendData=%#p\n", pBackendData)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + + AssertPtrReturn(pImage, 0); + + LogFlowFunc(("returns %#x\n", pImage->uImageFlags)); + return pImage->uImageFlags; +} + +/** @copydoc VDIMAGEBACKEND::pfnGetOpenFlags */ +static DECLCALLBACK(unsigned) rawGetOpenFlags(void *pBackendData) +{ + LogFlowFunc(("pBackendData=%#p\n", pBackendData)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + + AssertPtrReturn(pImage, 0); + + LogFlowFunc(("returns %#x\n", pImage->uOpenFlags)); + return pImage->uOpenFlags; +} + +/** @copydoc VDIMAGEBACKEND::pfnSetOpenFlags */ +static DECLCALLBACK(int) rawSetOpenFlags(void *pBackendData, unsigned uOpenFlags) +{ + LogFlowFunc(("pBackendData=%#p\n uOpenFlags=%#x", pBackendData, uOpenFlags)); + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + int rc = VINF_SUCCESS; + + /* Image must be opened and the new flags must be valid. */ + if (!pImage || (uOpenFlags & ~( VD_OPEN_FLAGS_READONLY | VD_OPEN_FLAGS_INFO + | VD_OPEN_FLAGS_ASYNC_IO | VD_OPEN_FLAGS_SHAREABLE + | VD_OPEN_FLAGS_SEQUENTIAL | VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS))) + rc = VERR_INVALID_PARAMETER; + else + { + /* Implement this operation via reopening the image. */ + rc = rawFreeImage(pImage, false); + if (RT_SUCCESS(rc)) + rc = rawOpenImage(pImage, uOpenFlags); + } + + LogFlowFunc(("returns %Rrc\n", rc)); + return rc; +} + +/** @copydoc VDIMAGEBACKEND::pfnGetComment */ +VD_BACKEND_CALLBACK_GET_COMMENT_DEF_NOT_SUPPORTED(rawGetComment); + +/** @copydoc VDIMAGEBACKEND::pfnSetComment */ +VD_BACKEND_CALLBACK_SET_COMMENT_DEF_NOT_SUPPORTED(rawSetComment, PRAWIMAGE); + +/** @copydoc VDIMAGEBACKEND::pfnGetUuid */ +VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetUuid); + +/** @copydoc VDIMAGEBACKEND::pfnSetUuid */ +VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetUuid, PRAWIMAGE); + +/** @copydoc VDIMAGEBACKEND::pfnGetModificationUuid */ +VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetModificationUuid); + +/** @copydoc VDIMAGEBACKEND::pfnSetModificationUuid */ +VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetModificationUuid, PRAWIMAGE); + +/** @copydoc VDIMAGEBACKEND::pfnGetParentUuid */ +VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetParentUuid); + +/** @copydoc VDIMAGEBACKEND::pfnSetParentUuid */ +VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetParentUuid, PRAWIMAGE); + +/** @copydoc VDIMAGEBACKEND::pfnGetParentModificationUuid */ +VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetParentModificationUuid); + +/** @copydoc VDIMAGEBACKEND::pfnSetParentModificationUuid */ +VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetParentModificationUuid, PRAWIMAGE); + +/** @copydoc VDIMAGEBACKEND::pfnDump */ +static DECLCALLBACK(void) rawDump(void *pBackendData) +{ + PRAWIMAGE pImage = (PRAWIMAGE)pBackendData; + + AssertPtrReturnVoid(pImage); + vdIfErrorMessage(pImage->pIfError, "Header: Geometry PCHS=%u/%u/%u LCHS=%u/%u/%u cbSector=%llu\n", + pImage->PCHSGeometry.cCylinders, pImage->PCHSGeometry.cHeads, pImage->PCHSGeometry.cSectors, + pImage->LCHSGeometry.cCylinders, pImage->LCHSGeometry.cHeads, pImage->LCHSGeometry.cSectors, + pImage->cbSize / 512); +} + + + +const VDIMAGEBACKEND g_RawBackend = +{ + /* u32Version */ + VD_IMGBACKEND_VERSION, + /* pszBackendName */ + "RAW", + /* uBackendCaps */ + VD_CAP_CREATE_FIXED | VD_CAP_FILE | VD_CAP_ASYNC | VD_CAP_VFS, + /* paFileExtensions */ + s_aRawFileExtensions, + /* paConfigInfo */ + NULL, + /* pfnProbe */ + rawProbe, + /* pfnOpen */ + rawOpen, + /* pfnCreate */ + rawCreate, + /* pfnRename */ + rawRename, + /* pfnClose */ + rawClose, + /* pfnRead */ + rawRead, + /* pfnWrite */ + rawWrite, + /* pfnFlush */ + rawFlush, + /* pfnDiscard */ + NULL, + /* pfnGetVersion */ + rawGetVersion, + /* pfnGetFileSize */ + rawGetFileSize, + /* pfnGetPCHSGeometry */ + rawGetPCHSGeometry, + /* pfnSetPCHSGeometry */ + rawSetPCHSGeometry, + /* pfnGetLCHSGeometry */ + rawGetLCHSGeometry, + /* pfnSetLCHSGeometry */ + rawSetLCHSGeometry, + /* pfnQueryRegions */ + rawQueryRegions, + /* pfnRegionListRelease */ + rawRegionListRelease, + /* pfnGetImageFlags */ + rawGetImageFlags, + /* pfnGetOpenFlags */ + rawGetOpenFlags, + /* pfnSetOpenFlags */ + rawSetOpenFlags, + /* pfnGetComment */ + rawGetComment, + /* pfnSetComment */ + rawSetComment, + /* pfnGetUuid */ + rawGetUuid, + /* pfnSetUuid */ + rawSetUuid, + /* pfnGetModificationUuid */ + rawGetModificationUuid, + /* pfnSetModificationUuid */ + rawSetModificationUuid, + /* pfnGetParentUuid */ + rawGetParentUuid, + /* pfnSetParentUuid */ + rawSetParentUuid, + /* pfnGetParentModificationUuid */ + rawGetParentModificationUuid, + /* pfnSetParentModificationUuid */ + rawSetParentModificationUuid, + /* pfnDump */ + rawDump, + /* pfnGetTimestamp */ + NULL, + /* pfnGetParentTimestamp */ + NULL, + /* pfnSetParentTimestamp */ + NULL, + /* pfnGetParentFilename */ + NULL, + /* pfnSetParentFilename */ + NULL, + /* pfnComposeLocation */ + genericFileComposeLocation, + /* pfnComposeName */ + genericFileComposeName, + /* pfnCompact */ + NULL, + /* pfnResize */ + NULL, + /* pfnRepair */ + NULL, + /* pfnTraverseMetadata */ + NULL, + /* u32VersionEnd */ + VD_IMGBACKEND_VERSION +}; 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