RAW.cpp@ 96238

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1	/* $Id: RAW.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* RawHDDCore - Raw Disk image, Core Code.
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_VD_RAW
23	#include <VBox/vd-plugin.h>
24	#include <VBox/err.h>
25
26	#include <VBox/log.h>
27	#include <iprt/assert.h>
28	#include <iprt/alloc.h>
29	#include <iprt/path.h>
30	#include <iprt/formats/iso9660.h>
31	#include <iprt/formats/udf.h>
32
33	#include "VDBackends.h"
34	#include "VDBackendsInline.h"
35
36
37	/*********************************************************************************************************************************
38	* Constants And Macros, Structures and Typedefs *
39	*********************************************************************************************************************************/
40
41	/**
42	* Raw image data structure.
43	*/
44	typedef struct RAWIMAGE
45	{
46	/** Image name. */
47	const char *pszFilename;
48	/** Storage handle. */
49	PVDIOSTORAGE pStorage;
50
51	/** Pointer to the per-disk VD interface list. */
52	PVDINTERFACE pVDIfsDisk;
53	/** Pointer to the per-image VD interface list. */
54	PVDINTERFACE pVDIfsImage;
55	/** Error interface. */
56	PVDINTERFACEERROR pIfError;
57	/** I/O interface. */
58	PVDINTERFACEIOINT pIfIo;
59
60	/** Open flags passed by VBoxHD layer. */
61	unsigned uOpenFlags;
62	/** Image flags defined during creation or determined during open. */
63	unsigned uImageFlags;
64	/** Total size of the image. */
65	uint64_t cbSize;
66	/** Position in the image (only truly used for sequential access). */
67	uint64_t offAccess;
68	/** Flag if this is a newly created image. */
69	bool fCreate;
70	/** Physical geometry of this image. */
71	VDGEOMETRY PCHSGeometry;
72	/** Logical geometry of this image. */
73	VDGEOMETRY LCHSGeometry;
74	/** Sector size of the image. */
75	uint32_t cbSector;
76	/** The static region list. */
77	VDREGIONLIST RegionList;
78	} RAWIMAGE, *PRAWIMAGE;
79
80
81	/** Size of write operations when filling an image with zeroes. */
82	#define RAW_FILL_SIZE (128 * _1K)
83
84	/** The maximum reasonable size of a floppy image (big format 2.88MB medium). */
85	#define RAW_MAX_FLOPPY_IMG_SIZE (512 * 82 * 48 * 2)
86
87
88	/*********************************************************************************************************************************
89	* Static Variables *
90	*********************************************************************************************************************************/
91
92	/** NULL-terminated array of supported file extensions. */
93	static const VDFILEEXTENSION s_aRawFileExtensions[] =
94	{
95	{"iso", VDTYPE_OPTICAL_DISC},
96	{"cdr", VDTYPE_OPTICAL_DISC},
97	{"img", VDTYPE_FLOPPY},
98	{"ima", VDTYPE_FLOPPY},
99	{"dsk", VDTYPE_FLOPPY},
100	{"flp", VDTYPE_FLOPPY},
101	{"vfd", VDTYPE_FLOPPY},
102	{NULL, VDTYPE_INVALID}
103	};
104
105
106	/*********************************************************************************************************************************
107	* Internal Functions *
108	*********************************************************************************************************************************/
109
110	/**
111	* Internal. Flush image data to disk.
112	*/
113	static int rawFlushImage(PRAWIMAGE pImage)
114	{
115	int rc = VINF_SUCCESS;
116
117	if ( pImage->pStorage
118	&& !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
119	rc = vdIfIoIntFileFlushSync(pImage->pIfIo, pImage->pStorage);
120
121	return rc;
122	}
123
124	/**
125	* Internal. Free all allocated space for representing an image except pImage,
126	* and optionally delete the image from disk.
127	*/
128	static int rawFreeImage(PRAWIMAGE pImage, bool fDelete)
129	{
130	int rc = VINF_SUCCESS;
131
132	/* Freeing a never allocated image (e.g. because the open failed) is
133	* not signalled as an error. After all nothing bad happens. */
134	if (pImage)
135	{
136	if (pImage->pStorage)
137	{
138	/* No point updating the file that is deleted anyway. */
139	if (!fDelete)
140	{
141	/* For newly created images in sequential mode fill it to
142	* the nominal size. */
143	if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
144	&& !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
145	&& pImage->fCreate)
146	{
147	/* Fill rest of image with zeroes, a must for sequential
148	* images to reach the nominal size. */
149	uint64_t uOff;
150	void *pvBuf = RTMemTmpAllocZ(RAW_FILL_SIZE);
151	if (RT_LIKELY(pvBuf))
152	{
153	uOff = pImage->offAccess;
154	/* Write data to all image blocks. */
155	while (uOff < pImage->cbSize)
156	{
157	unsigned cbChunk = (unsigned)RT_MIN(pImage->cbSize - uOff,
158	RAW_FILL_SIZE);
159
160	rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
161	uOff, pvBuf, cbChunk);
162	if (RT_FAILURE(rc))
163	break;
164
165	uOff += cbChunk;
166	}
167
168	RTMemTmpFree(pvBuf);
169	}
170	else
171	rc = VERR_NO_MEMORY;
172	}
173	rawFlushImage(pImage);
174	}
175
176	rc = vdIfIoIntFileClose(pImage->pIfIo, pImage->pStorage);
177	pImage->pStorage = NULL;
178	}
179
180	if (fDelete && pImage->pszFilename)
181	vdIfIoIntFileDelete(pImage->pIfIo, pImage->pszFilename);
182	}
183
184	LogFlowFunc(("returns %Rrc\n", rc));
185	return rc;
186	}
187
188	/**
189	* Internal: Open an image, constructing all necessary data structures.
190	*/
191	static int rawOpenImage(PRAWIMAGE pImage, unsigned uOpenFlags)
192	{
193	pImage->uOpenFlags = uOpenFlags;
194	pImage->fCreate = false;
195
196	pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
197	pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
198	AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
199
200	/* Open the image. */
201	int rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
202	VDOpenFlagsToFileOpenFlags(uOpenFlags,
203	false /* fCreate */),
204	&pImage->pStorage);
205	if (RT_SUCCESS(rc))
206	{
207	rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &pImage->cbSize);
208	if ( RT_SUCCESS(rc)
209	&& !(pImage->cbSize % 512))
210	pImage->uImageFlags \|= VD_IMAGE_FLAGS_FIXED;
211	else if (RT_SUCCESS(rc))
212	rc = VERR_VD_RAW_SIZE_MODULO_512;
213	}
214	/* else: Do NOT signal an appropriate error here, as the VD layer has the
215	* choice of retrying the open if it failed. */
216
217	if (RT_SUCCESS(rc))
218	{
219	PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
220	pImage->RegionList.fFlags = 0;
221	pImage->RegionList.cRegions = 1;
222
223	pRegion->offRegion = 0; /* Disk start. */
224	pRegion->cbBlock = pImage->cbSector;
225	pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
226	pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
227	pRegion->cbData = pImage->cbSector;
228	pRegion->cbMetadata = 0;
229	pRegion->cRegionBlocksOrBytes = pImage->cbSize;
230	}
231	else
232	rawFreeImage(pImage, false);
233	return rc;
234	}
235
236	/**
237	* Internal: Create a raw image.
238	*/
239	static int rawCreateImage(PRAWIMAGE pImage, uint64_t cbSize,
240	unsigned uImageFlags, const char *pszComment,
241	PCVDGEOMETRY pPCHSGeometry,
242	PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
243	PVDINTERFACEPROGRESS pIfProgress,
244	unsigned uPercentStart, unsigned uPercentSpan)
245	{
246	RT_NOREF1(pszComment);
247	int rc = VINF_SUCCESS;
248
249	pImage->fCreate = true;
250	pImage->uOpenFlags = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;
251	pImage->uImageFlags = uImageFlags \| VD_IMAGE_FLAGS_FIXED;
252	pImage->PCHSGeometry = *pPCHSGeometry;
253	pImage->LCHSGeometry = *pLCHSGeometry;
254	pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
255	pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
256	AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
257
258	if (!(pImage->uImageFlags & VD_IMAGE_FLAGS_DIFF))
259	{
260	/* Create image file. */
261	uint32_t fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
262	if (uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)
263	fOpen &= ~RTFILE_O_READ;
264	rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
265	if (RT_SUCCESS(rc))
266	{
267	if (!(uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
268	{
269	RTFOFF cbFree = 0;
270
271	/* Check the free space on the disk and leave early if there is not
272	* sufficient space available. */
273	rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
274	if (RT_FAILURE(rc) /* ignore errors */ \|\| ((uint64_t)cbFree >= cbSize))
275	{
276	rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pImage->pStorage, cbSize, 0 /* fFlags */,
277	pIfProgress, uPercentStart, uPercentSpan);
278	if (RT_SUCCESS(rc))
279	{
280	vdIfProgress(pIfProgress, uPercentStart + uPercentSpan * 98 / 100);
281
282	pImage->cbSize = cbSize;
283	rc = rawFlushImage(pImage);
284	}
285	}
286	else
287	rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS, N_("Raw: disk would overflow creating image '%s'"), pImage->pszFilename);
288	}
289	else
290	{
291	rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, cbSize);
292	if (RT_SUCCESS(rc))
293	pImage->cbSize = cbSize;
294	}
295	}
296	else
297	rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: cannot create image '%s'"), pImage->pszFilename);
298	}
299	else
300	rc = vdIfError(pImage->pIfError, VERR_VD_RAW_INVALID_TYPE, RT_SRC_POS, N_("Raw: cannot create diff image '%s'"), pImage->pszFilename);
301
302	if (RT_SUCCESS(rc))
303	{
304	PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
305	pImage->RegionList.fFlags = 0;
306	pImage->RegionList.cRegions = 1;
307
308	pRegion->offRegion = 0; /* Disk start. */
309	pRegion->cbBlock = pImage->cbSector;
310	pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
311	pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
312	pRegion->cbData = pImage->cbSector;
313	pRegion->cbMetadata = 0;
314	pRegion->cRegionBlocksOrBytes = pImage->cbSize;
315
316	vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);
317	}
318
319	if (RT_FAILURE(rc))
320	rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
321	return rc;
322	}
323
324	/**
325	* Worker for rawProbe that checks if the file looks like it contains an ISO
326	* 9660 or UDF descriptor sequence at the expected offset.
327	*
328	* Caller already checked if the size is suitable for ISOs.
329	*
330	* @returns IPRT status code. Success if detected ISO 9660 or UDF, failure if
331	* not.
332	*
333	* @note Code is a modified version of rtFsIsoVolTryInit() IPRT (isovfs.cpp).
334	*/
335	static int rawProbeIsIso9660OrUdf(PVDINTERFACEIOINT pIfIo, PVDIOSTORAGE pStorage)
336	{
337	PRTERRINFO pErrInfo = NULL;
338	const uint32_t cbSector = _2K;
339
340	union
341	{
342	uint8_t ab[_2K];
343	ISO9660VOLDESCHDR VolDescHdr;
344	} Buf;
345	Assert(cbSector <= sizeof(Buf));
346	RT_ZERO(Buf);
347
348	uint8_t uUdfLevel = 0;
349	uint64_t offUdfBootVolDesc = UINT64_MAX;
350
351	uint32_t cPrimaryVolDescs = 0;
352	uint32_t cSupplementaryVolDescs = 0;
353	uint32_t cBootRecordVolDescs = 0;
354	uint32_t offVolDesc = 16 * cbSector;
355	enum
356	{
357	kStateStart = 0,
358	kStateNoSeq,
359	kStateCdSeq,
360	kStateUdfSeq
361	} enmState = kStateStart;
362	for (uint32_t iVolDesc = 0; ; iVolDesc++, offVolDesc += cbSector)
363	{
364	if (iVolDesc > 32)
365	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "More than 32 volume descriptors, doesn't seem right...");
366
367	/* Read the next one and check the signature. */
368	int rc = vdIfIoIntFileReadSync(pIfIo, pStorage, offVolDesc, &Buf, cbSector);
369	if (RT_FAILURE(rc))
370	return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Unable to read volume descriptor #%u", iVolDesc);
371
372	#define MATCH_STD_ID(a_achStdId1, a_szStdId2) \
373	( (a_achStdId1)[0] == (a_szStdId2)[0] \
374	&& (a_achStdId1)[1] == (a_szStdId2)[1] \
375	&& (a_achStdId1)[2] == (a_szStdId2)[2] \
376	&& (a_achStdId1)[3] == (a_szStdId2)[3] \
377	&& (a_achStdId1)[4] == (a_szStdId2)[4] )
378	#define MATCH_HDR(a_pStd, a_bType2, a_szStdId2, a_bVer2) \
379	( MATCH_STD_ID((a_pStd)->achStdId, a_szStdId2) \
380	&& (a_pStd)->bDescType == (a_bType2) \
381	&& (a_pStd)->bDescVersion == (a_bVer2) )
382
383	/*
384	* ISO 9660 ("CD001").
385	*/
386	if ( ( enmState == kStateStart
387	\|\| enmState == kStateCdSeq
388	\|\| enmState == kStateNoSeq)
389	&& MATCH_STD_ID(Buf.VolDescHdr.achStdId, ISO9660VOLDESC_STD_ID) )
390	{
391	enmState = kStateCdSeq;
392
393	/* Do type specific handling. */
394	Log(("RAW/ISO9660: volume desc #%u: type=%#x\n", iVolDesc, Buf.VolDescHdr.bDescType));
395	if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_PRIMARY)
396	{
397	cPrimaryVolDescs++;
398	if (Buf.VolDescHdr.bDescVersion != ISO9660PRIMARYVOLDESC_VERSION)
399	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
400	"Unsupported primary volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
401	if (cPrimaryVolDescs == 1)
402	{ /rc = rtFsIsoVolHandlePrimaryVolDesc(pThis, &Buf.PrimaryVolDesc, offVolDesc, &RootDir, &offRootDirRec, pErrInfo);/ }
403	else if (cPrimaryVolDescs == 2)
404	Log(("RAW/ISO9660: ignoring 2nd primary descriptor\n")); /* so we can read the w2k3 ifs kit */
405	else
406	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one primary volume descriptor");
407	}
408	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_SUPPLEMENTARY)
409	{
410	cSupplementaryVolDescs++;
411	if (Buf.VolDescHdr.bDescVersion != ISO9660SUPVOLDESC_VERSION)
412	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
413	"Unsupported supplemental volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
414	/*rc = rtFsIsoVolHandleSupplementaryVolDesc(pThis, &Buf.SupVolDesc, offVolDesc, &bJolietUcs2Level, &JolietRootDir,
415	&offJolietRootDirRec, pErrInfo);*/
416	}
417	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_BOOT_RECORD)
418	{
419	cBootRecordVolDescs++;
420	}
421	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_TERMINATOR)
422	{
423	if (!cPrimaryVolDescs)
424	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "No primary volume descriptor");
425	enmState = kStateNoSeq;
426	}
427	else
428	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
429	"Unknown volume descriptor: %#x", Buf.VolDescHdr.bDescType);
430	}
431	/*
432	* UDF volume recognition sequence (VRS).
433	*/
434	else if ( ( enmState == kStateNoSeq
435	\|\| enmState == kStateStart)
436	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BEGIN, UDF_EXT_VOL_DESC_VERSION) )
437	{
438	if (uUdfLevel == 0)
439	enmState = kStateUdfSeq;
440	else
441	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BEA01 sequence is supported");
442	}
443	else if ( enmState == kStateUdfSeq
444	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_02, UDF_EXT_VOL_DESC_VERSION) )
445	uUdfLevel = 2;
446	else if ( enmState == kStateUdfSeq
447	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_03, UDF_EXT_VOL_DESC_VERSION) )
448	uUdfLevel = 3;
449	else if ( enmState == kStateUdfSeq
450	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BOOT, UDF_EXT_VOL_DESC_VERSION) )
451	{
452	if (offUdfBootVolDesc == UINT64_MAX)
453	offUdfBootVolDesc = iVolDesc * cbSector;
454	else
455	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BOOT2 descriptor is supported");
456	}
457	else if ( enmState == kStateUdfSeq
458	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_TERM, UDF_EXT_VOL_DESC_VERSION) )
459	{
460	if (uUdfLevel != 0)
461	enmState = kStateNoSeq;
462	else
463	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Found BEA01 & TEA01, but no NSR02 or NSR03 descriptors");
464	}
465	/*
466	* Unknown, probably the end.
467	*/
468	else if (enmState == kStateNoSeq)
469	break;
470	else if (enmState == kStateStart)
471	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
472	"Not ISO? Unable to recognize volume descriptor signature: %.5Rhxs", Buf.VolDescHdr.achStdId);
473	else if (enmState == kStateCdSeq)
474	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
475	"Missing ISO 9660 terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId);
476	else if (enmState == kStateUdfSeq)
477	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
478	"Missing UDF terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId);
479	else
480	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
481	"Unknown volume descriptor signature found at sector %u: %.5Rhxs",
482	16 + iVolDesc, Buf.VolDescHdr.achStdId);
483	}
484
485	return VINF_SUCCESS;
486	}
487
488	/**
489	* Checks the given extension array for the given suffix and type.
490	*
491	* @returns true if found in the list, false if not.
492	* @param paExtensions The extension array to check against.
493	* @param pszSuffix The suffix to look for. Can be NULL.
494	* @param enmType The image type to look for.
495	*/
496	static bool rawProbeContainsExtension(const VDFILEEXTENSION paExtensions, const char pszSuffix, VDTYPE enmType)
497	{
498	if (pszSuffix)
499	{
500	if (*pszSuffix == '.')
501	pszSuffix++;
502	if (*pszSuffix != '\0')
503	{
504	for (size_t i = 0;; i++)
505	{
506	if (!paExtensions[i].pszExtension)
507	break;
508	if ( paExtensions[i].enmType == enmType
509	&& RTStrICmpAscii(paExtensions[i].pszExtension, pszSuffix) == 0)
510	return true;
511	}
512	}
513	}
514	return false;
515	}
516
517
518	/** @copydoc VDIMAGEBACKEND::pfnProbe */
519	static DECLCALLBACK(int) rawProbe(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
520	PVDINTERFACE pVDIfsImage, VDTYPE enmDesiredType, VDTYPE *penmType)
521	{
522	RT_NOREF(pVDIfsDisk, enmDesiredType);
523	LogFlowFunc(("pszFilename=\"%s\" pVDIfsDisk=%#p pVDIfsImage=%#p\n", pszFilename, pVDIfsDisk, pVDIfsImage));
524	PVDIOSTORAGE pStorage = NULL;
525	PVDINTERFACEIOINT pIfIo = VDIfIoIntGet(pVDIfsImage);
526
527	AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER);
528	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
529	AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
530
531	/*
532	* Open the file and read the footer.
533	*/
534	int rc = vdIfIoIntFileOpen(pIfIo, pszFilename,
535	VDOpenFlagsToFileOpenFlags(VD_OPEN_FLAGS_READONLY,
536	false /* fCreate */),
537	&pStorage);
538	if (RT_SUCCESS(rc))
539	{
540	uint64_t cbFile;
541	rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile);
542	if (RT_SUCCESS(rc))
543	{
544	/*
545	* Detecting raw ISO and floppy images and keeping them apart isn't all
546	* that simple.
547	*
548	* - Both must be a multiple of their sector sizes, though
549	* that means that any ISO can also be a floppy, since 2048 is 512 * 4.
550	* - The ISO images must be 32KB and floppies are generally not larger
551	* than 2.88MB, but that leaves quite a bit of size overlap,
552	*
553	* So, the size cannot conclusively say whether something is one or the other.
554	*
555	* - The content of a normal ISO image is detectable, but not all ISO
556	* images need to follow that spec to work in a DVD ROM drive.
557	* - It is common for ISO images to start like a floppy with a boot sector
558	* at the very start of the image.
559	* - Floppies doesn't need to contain a DOS-style boot sector, it depends
560	* on the system it is formatted and/or intended for.
561	*
562	* So, the content cannot conclusively determine the type either.
563	*
564	* However, there are a number of cases, especially for ISOs, where we can
565	* say we a deal of confidence that something is an ISO image.
566	*/
567	const char * const pszSuffix = RTPathSuffix(pszFilename);
568
569	/*
570	* Start by checking for sure signs of an ISO 9660 / UDF image.
571	*/
572	rc = VERR_VD_RAW_INVALID_HEADER;
573	if ( (enmDesiredType == VDTYPE_INVALID \|\| enmDesiredType == VDTYPE_OPTICAL_DISC)
574	&& (cbFile % 2048) == 0
575	&& cbFile > 32768)
576	{
577	int rc2 = rawProbeIsIso9660OrUdf(pIfIo, pStorage);
578	if (RT_SUCCESS(rc2))
579	{
580	/* puScore = VDPROBE_SCORE_HIGH; /
581	*penmType = VDTYPE_OPTICAL_DISC;
582	rc = VINF_SUCCESS;
583	}
584	/* If that didn't work out, check by extension (the old way): */
585	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_OPTICAL_DISC))
586	{
587	/* puScore = VDPROBE_SCORE_LOW; /
588	*penmType = VDTYPE_OPTICAL_DISC;
589	rc = VINF_SUCCESS;
590	}
591	}
592
593	/*
594	* We could do something similar for floppies, i.e. check for a
595	* DOS'ish boot sector and thereby get a good match on most of the
596	* relevant floppy images out there.
597	*/
598	if ( RT_FAILURE(rc)
599	&& (enmDesiredType == VDTYPE_INVALID \|\| enmDesiredType == VDTYPE_FLOPPY)
600	&& (cbFile % 512) == 0
601	&& cbFile >= 512
602	&& cbFile <= RAW_MAX_FLOPPY_IMG_SIZE)
603	{
604	/** @todo check if the content is DOSish. */
605	if (false)
606	{
607	/* puScore = VDPROBE_SCORE_HIGH; /
608	*penmType = VDTYPE_FLOPPY;
609	rc = VINF_SUCCESS;
610	}
611	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_FLOPPY))
612	{
613	/* puScore = VDPROBE_SCORE_LOW; /
614	*penmType = VDTYPE_FLOPPY;
615	rc = VINF_SUCCESS;
616	}
617	}
618
619	/*
620	* No luck? Go exclusively by extension like we've done since
621	* for ever and complain about the size if it doesn't fit expectations.
622	* We can get here if the desired type doesn't match the extension and such.
623	*/
624	if (RT_FAILURE(rc))
625	{
626	if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_OPTICAL_DISC))
627	{
628	if (cbFile % 2048)
629	rc = VERR_VD_RAW_SIZE_MODULO_2048;
630	else if (cbFile <= 32768)
631	rc = VERR_VD_RAW_SIZE_OPTICAL_TOO_SMALL;
632	else
633	{
634	Assert(enmDesiredType != VDTYPE_OPTICAL_DISC);
635	*penmType = VDTYPE_OPTICAL_DISC;
636	rc = VINF_SUCCESS;
637	}
638	}
639	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_FLOPPY))
640	{
641	if (cbFile % 512)
642	rc = VERR_VD_RAW_SIZE_MODULO_512;
643	else if (cbFile > RAW_MAX_FLOPPY_IMG_SIZE)
644	rc = VERR_VD_RAW_SIZE_FLOPPY_TOO_BIG;
645	else
646	{
647	Assert(cbFile == 0 \|\| enmDesiredType != VDTYPE_FLOPPY);
648	*penmType = VDTYPE_FLOPPY;
649	rc = VINF_SUCCESS;
650	}
651	}
652	else
653	rc = VERR_VD_RAW_INVALID_HEADER;
654	}
655	}
656	else
657	rc = VERR_VD_RAW_INVALID_HEADER;
658	}
659
660	if (pStorage)
661	vdIfIoIntFileClose(pIfIo, pStorage);
662
663	LogFlowFunc(("returns %Rrc\n", rc));
664	return rc;
665	}
666
667	/** @copydoc VDIMAGEBACKEND::pfnOpen */
668	static DECLCALLBACK(int) rawOpen(const char *pszFilename, unsigned uOpenFlags,
669	PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
670	VDTYPE enmType, void **ppBackendData)
671	{
672	LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x pVDIfsDisk=%#p pVDIfsImage=%#p enmType=%u ppBackendData=%#p\n",
673	pszFilename, uOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData));
674	int rc;
675	PRAWIMAGE pImage;
676
677	/* Check open flags. All valid flags are supported. */
678	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
679	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
680	AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
681
682	pImage = (PRAWIMAGE)RTMemAllocZ(RT_UOFFSETOF(RAWIMAGE, RegionList.aRegions[1]));
683	if (RT_LIKELY(pImage))
684	{
685	pImage->pszFilename = pszFilename;
686	pImage->pStorage = NULL;
687	pImage->pVDIfsDisk = pVDIfsDisk;
688	pImage->pVDIfsImage = pVDIfsImage;
689
690	if (enmType == VDTYPE_OPTICAL_DISC)
691	pImage->cbSector = 2048;
692	else
693	pImage->cbSector = 512;
694
695	rc = rawOpenImage(pImage, uOpenFlags);
696	if (RT_SUCCESS(rc))
697	*ppBackendData = pImage;
698	else
699	RTMemFree(pImage);
700	}
701	else
702	rc = VERR_NO_MEMORY;
703
704	LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
705	return rc;
706	}
707
708	/** @copydoc VDIMAGEBACKEND::pfnCreate */
709	static DECLCALLBACK(int) rawCreate(const char *pszFilename, uint64_t cbSize,
710	unsigned uImageFlags, const char *pszComment,
711	PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
712	PCRTUUID pUuid, unsigned uOpenFlags,
713	unsigned uPercentStart, unsigned uPercentSpan,
714	PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
715	PVDINTERFACE pVDIfsOperation, VDTYPE enmType,
716	void **ppBackendData)
717	{
718	RT_NOREF1(pUuid);
719	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",
720	pszFilename, cbSize, uImageFlags, pszComment, pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags, uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation, enmType, ppBackendData));
721
722	/* Check the VD container type. Yes, hard disk must be allowed, otherwise
723	* various tools using this backend for hard disk images will fail. */
724	if (enmType != VDTYPE_HDD && enmType != VDTYPE_OPTICAL_DISC && enmType != VDTYPE_FLOPPY)
725	return VERR_VD_INVALID_TYPE;
726
727	int rc = VINF_SUCCESS;
728	PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation);
729
730	/* Check arguments. */
731	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
732	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
733	AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
734	AssertPtrReturn(pPCHSGeometry, VERR_INVALID_POINTER);
735	AssertPtrReturn(pLCHSGeometry, VERR_INVALID_POINTER);
736
737	PRAWIMAGE pImage = (PRAWIMAGE)RTMemAllocZ(RT_UOFFSETOF(RAWIMAGE, RegionList.aRegions[1]));
738	if (RT_LIKELY(pImage))
739	{
740	pImage->pszFilename = pszFilename;
741	pImage->pStorage = NULL;
742	pImage->pVDIfsDisk = pVDIfsDisk;
743	pImage->pVDIfsImage = pVDIfsImage;
744
745	rc = rawCreateImage(pImage, cbSize, uImageFlags, pszComment,
746	pPCHSGeometry, pLCHSGeometry, uOpenFlags,
747	pIfProgress, uPercentStart, uPercentSpan);
748	if (RT_SUCCESS(rc))
749	{
750	/* So far the image is opened in read/write mode. Make sure the
751	* image is opened in read-only mode if the caller requested that. */
752	if (uOpenFlags & VD_OPEN_FLAGS_READONLY)
753	{
754	rawFreeImage(pImage, false);
755	rc = rawOpenImage(pImage, uOpenFlags);
756	}
757
758	if (RT_SUCCESS(rc))
759	*ppBackendData = pImage;
760	}
761
762	if (RT_FAILURE(rc))
763	RTMemFree(pImage);
764	}
765	else
766	rc = VERR_NO_MEMORY;
767
768	LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
769	return rc;
770	}
771
772	/** @copydoc VDIMAGEBACKEND::pfnRename */
773	static DECLCALLBACK(int) rawRename(void pBackendData, const char pszFilename)
774	{
775	LogFlowFunc(("pBackendData=%#p pszFilename=%#p\n", pBackendData, pszFilename));
776	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
777
778	AssertReturn((pImage && pszFilename && *pszFilename), VERR_INVALID_PARAMETER);
779
780	/* Close the image. */
781	int rc = rawFreeImage(pImage, false);
782	if (RT_SUCCESS(rc))
783	{
784	/* Rename the file. */
785	rc = vdIfIoIntFileMove(pImage->pIfIo, pImage->pszFilename, pszFilename, 0);
786	if (RT_SUCCESS(rc))
787	{
788	/* Update pImage with the new information. */
789	pImage->pszFilename = pszFilename;
790
791	/* Open the old image with new name. */
792	rc = rawOpenImage(pImage, pImage->uOpenFlags);
793	}
794	else
795	{
796	/* The move failed, try to reopen the original image. */
797	int rc2 = rawOpenImage(pImage, pImage->uOpenFlags);
798	if (RT_FAILURE(rc2))
799	rc = rc2;
800	}
801	}
802
803	LogFlowFunc(("returns %Rrc\n", rc));
804	return rc;
805	}
806
807	/** @copydoc VDIMAGEBACKEND::pfnClose */
808	static DECLCALLBACK(int) rawClose(void *pBackendData, bool fDelete)
809	{
810	LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete));
811	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
812	int rc = rawFreeImage(pImage, fDelete);
813	RTMemFree(pImage);
814
815	LogFlowFunc(("returns %Rrc\n", rc));
816	return rc;
817	}
818
819	/** @copydoc VDIMAGEBACKEND::pfnRead */
820	static DECLCALLBACK(int) rawRead(void *pBackendData, uint64_t uOffset, size_t cbToRead,
821	PVDIOCTX pIoCtx, size_t *pcbActuallyRead)
822	{
823	int rc = VINF_SUCCESS;
824	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
825
826	/* For sequential access do not allow to go back. */
827	if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
828	&& uOffset < pImage->offAccess)
829	{
830	*pcbActuallyRead = 0;
831	return VERR_INVALID_PARAMETER;
832	}
833
834	rc = vdIfIoIntFileReadUser(pImage->pIfIo, pImage->pStorage, uOffset,
835	pIoCtx, cbToRead);
836	if (RT_SUCCESS(rc))
837	{
838	*pcbActuallyRead = cbToRead;
839	pImage->offAccess = uOffset + cbToRead;
840	}
841
842	return rc;
843	}
844
845	/** @copydoc VDIMAGEBACKEND::pfnWrite */
846	static DECLCALLBACK(int) rawWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite,
847	PVDIOCTX pIoCtx, size_t pcbWriteProcess, size_t pcbPreRead,
848	size_t *pcbPostRead, unsigned fWrite)
849	{
850	RT_NOREF1(fWrite);
851	int rc = VINF_SUCCESS;
852	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
853
854	/* For sequential access do not allow to go back. */
855	if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
856	&& uOffset < pImage->offAccess)
857	{
858	*pcbWriteProcess = 0;
859	*pcbPostRead = 0;
860	*pcbPreRead = 0;
861	return VERR_INVALID_PARAMETER;
862	}
863
864	rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage, uOffset,
865	pIoCtx, cbToWrite, NULL, NULL);
866	if (RT_SUCCESS(rc))
867	{
868	*pcbWriteProcess = cbToWrite;
869	*pcbPostRead = 0;
870	*pcbPreRead = 0;
871	pImage->offAccess = uOffset + cbToWrite;
872	}
873
874	return rc;
875	}
876
877	/** @copydoc VDIMAGEBACKEND::pfnFlush */
878	static DECLCALLBACK(int) rawFlush(void *pBackendData, PVDIOCTX pIoCtx)
879	{
880	int rc = VINF_SUCCESS;
881	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
882
883	if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
884	rc = vdIfIoIntFileFlush(pImage->pIfIo, pImage->pStorage, pIoCtx,
885	NULL, NULL);
886
887	return rc;
888	}
889
890	/** @copydoc VDIMAGEBACKEND::pfnGetVersion */
891	static DECLCALLBACK(unsigned) rawGetVersion(void *pBackendData)
892	{
893	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
894	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
895
896	AssertPtrReturn(pImage, 0);
897
898	return 1;
899	}
900
901	/** @copydoc VDIMAGEBACKEND::pfnGetFileSize */
902	static DECLCALLBACK(uint64_t) rawGetFileSize(void *pBackendData)
903	{
904	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
905	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
906
907	AssertPtrReturn(pImage, 0);
908
909	uint64_t cbFile = 0;
910	if (pImage->pStorage)
911	{
912	int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
913	if (RT_FAILURE(rc))
914	cbFile = 0; /* Make sure it is 0 */
915	}
916
917	LogFlowFunc(("returns %lld\n", cbFile));
918	return cbFile;
919	}
920
921	/** @copydoc VDIMAGEBACKEND::pfnGetPCHSGeometry */
922	static DECLCALLBACK(int) rawGetPCHSGeometry(void *pBackendData,
923	PVDGEOMETRY pPCHSGeometry)
924	{
925	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry));
926	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
927	int rc = VINF_SUCCESS;
928
929	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
930
931	if (pImage->PCHSGeometry.cCylinders)
932	*pPCHSGeometry = pImage->PCHSGeometry;
933	else
934	rc = VERR_VD_GEOMETRY_NOT_SET;
935
936	LogFlowFunc(("returns %Rrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
937	return rc;
938	}
939
940	/** @copydoc VDIMAGEBACKEND::pfnSetPCHSGeometry */
941	static DECLCALLBACK(int) rawSetPCHSGeometry(void *pBackendData,
942	PCVDGEOMETRY pPCHSGeometry)
943	{
944	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n",
945	pBackendData, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
946	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
947	int rc = VINF_SUCCESS;
948
949	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
950
951	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
952	rc = VERR_VD_IMAGE_READ_ONLY;
953	else
954	pImage->PCHSGeometry = *pPCHSGeometry;
955
956	LogFlowFunc(("returns %Rrc\n", rc));
957	return rc;
958	}
959
960	/** @copydoc VDIMAGEBACKEND::pfnGetLCHSGeometry */
961	static DECLCALLBACK(int) rawGetLCHSGeometry(void *pBackendData,
962	PVDGEOMETRY pLCHSGeometry)
963	{
964	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry));
965	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
966	int rc = VINF_SUCCESS;
967
968	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
969
970	if (pImage->LCHSGeometry.cCylinders)
971	*pLCHSGeometry = pImage->LCHSGeometry;
972	else
973	rc = VERR_VD_GEOMETRY_NOT_SET;
974
975	LogFlowFunc(("returns %Rrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
976	return rc;
977	}
978
979	/** @copydoc VDIMAGEBACKEND::pfnSetLCHSGeometry */
980	static DECLCALLBACK(int) rawSetLCHSGeometry(void *pBackendData,
981	PCVDGEOMETRY pLCHSGeometry)
982	{
983	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n",
984	pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
985	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
986	int rc = VINF_SUCCESS;
987
988	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
989
990	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
991	rc = VERR_VD_IMAGE_READ_ONLY;
992	else
993	pImage->LCHSGeometry = *pLCHSGeometry;
994
995	LogFlowFunc(("returns %Rrc\n", rc));
996	return rc;
997	}
998
999	/** @copydoc VDIMAGEBACKEND::pfnQueryRegions */
1000	static DECLCALLBACK(int) rawQueryRegions(void pBackendData, PCVDREGIONLIST ppRegionList)
1001	{
1002	LogFlowFunc(("pBackendData=%#p ppRegionList=%#p\n", pBackendData, ppRegionList));
1003	PRAWIMAGE pThis = (PRAWIMAGE)pBackendData;
1004
1005	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
1006
1007	*ppRegionList = &pThis->RegionList;
1008	LogFlowFunc(("returns %Rrc\n", VINF_SUCCESS));
1009	return VINF_SUCCESS;
1010	}
1011
1012	/** @copydoc VDIMAGEBACKEND::pfnRegionListRelease */
1013	static DECLCALLBACK(void) rawRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList)
1014	{
1015	RT_NOREF1(pRegionList);
1016	LogFlowFunc(("pBackendData=%#p pRegionList=%#p\n", pBackendData, pRegionList));
1017	PRAWIMAGE pThis = (PRAWIMAGE)pBackendData;
1018	AssertPtr(pThis); RT_NOREF(pThis);
1019
1020	/* Nothing to do here. */
1021	}
1022
1023	/** @copydoc VDIMAGEBACKEND::pfnGetImageFlags */
1024	static DECLCALLBACK(unsigned) rawGetImageFlags(void *pBackendData)
1025	{
1026	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1027	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1028
1029	AssertPtrReturn(pImage, 0);
1030
1031	LogFlowFunc(("returns %#x\n", pImage->uImageFlags));
1032	return pImage->uImageFlags;
1033	}
1034
1035	/** @copydoc VDIMAGEBACKEND::pfnGetOpenFlags */
1036	static DECLCALLBACK(unsigned) rawGetOpenFlags(void *pBackendData)
1037	{
1038	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1039	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1040
1041	AssertPtrReturn(pImage, 0);
1042
1043	LogFlowFunc(("returns %#x\n", pImage->uOpenFlags));
1044	return pImage->uOpenFlags;
1045	}
1046
1047	/** @copydoc VDIMAGEBACKEND::pfnSetOpenFlags */
1048	static DECLCALLBACK(int) rawSetOpenFlags(void *pBackendData, unsigned uOpenFlags)
1049	{
1050	LogFlowFunc(("pBackendData=%#p\n uOpenFlags=%#x", pBackendData, uOpenFlags));
1051	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1052	int rc = VINF_SUCCESS;
1053
1054	/* Image must be opened and the new flags must be valid. */
1055	if (!pImage \|\| (uOpenFlags & ~( VD_OPEN_FLAGS_READONLY \| VD_OPEN_FLAGS_INFO
1056	\| VD_OPEN_FLAGS_ASYNC_IO \| VD_OPEN_FLAGS_SHAREABLE
1057	\| VD_OPEN_FLAGS_SEQUENTIAL \| VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS)))
1058	rc = VERR_INVALID_PARAMETER;
1059	else
1060	{
1061	/* Implement this operation via reopening the image. */
1062	rc = rawFreeImage(pImage, false);
1063	if (RT_SUCCESS(rc))
1064	rc = rawOpenImage(pImage, uOpenFlags);
1065	}
1066
1067	LogFlowFunc(("returns %Rrc\n", rc));
1068	return rc;
1069	}
1070
1071	/** @copydoc VDIMAGEBACKEND::pfnGetComment */
1072	VD_BACKEND_CALLBACK_GET_COMMENT_DEF_NOT_SUPPORTED(rawGetComment);
1073
1074	/** @copydoc VDIMAGEBACKEND::pfnSetComment */
1075	VD_BACKEND_CALLBACK_SET_COMMENT_DEF_NOT_SUPPORTED(rawSetComment, PRAWIMAGE);
1076
1077	/** @copydoc VDIMAGEBACKEND::pfnGetUuid */
1078	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetUuid);
1079
1080	/** @copydoc VDIMAGEBACKEND::pfnSetUuid */
1081	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetUuid, PRAWIMAGE);
1082
1083	/** @copydoc VDIMAGEBACKEND::pfnGetModificationUuid */
1084	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetModificationUuid);
1085
1086	/** @copydoc VDIMAGEBACKEND::pfnSetModificationUuid */
1087	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetModificationUuid, PRAWIMAGE);
1088
1089	/** @copydoc VDIMAGEBACKEND::pfnGetParentUuid */
1090	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetParentUuid);
1091
1092	/** @copydoc VDIMAGEBACKEND::pfnSetParentUuid */
1093	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetParentUuid, PRAWIMAGE);
1094
1095	/** @copydoc VDIMAGEBACKEND::pfnGetParentModificationUuid */
1096	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetParentModificationUuid);
1097
1098	/** @copydoc VDIMAGEBACKEND::pfnSetParentModificationUuid */
1099	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetParentModificationUuid, PRAWIMAGE);
1100
1101	/** @copydoc VDIMAGEBACKEND::pfnDump */
1102	static DECLCALLBACK(void) rawDump(void *pBackendData)
1103	{
1104	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1105
1106	AssertPtrReturnVoid(pImage);
1107	vdIfErrorMessage(pImage->pIfError, "Header: Geometry PCHS=%u/%u/%u LCHS=%u/%u/%u cbSector=%llu\n",
1108	pImage->PCHSGeometry.cCylinders, pImage->PCHSGeometry.cHeads, pImage->PCHSGeometry.cSectors,
1109	pImage->LCHSGeometry.cCylinders, pImage->LCHSGeometry.cHeads, pImage->LCHSGeometry.cSectors,
1110	pImage->cbSize / 512);
1111	}
1112
1113
1114
1115	const VDIMAGEBACKEND g_RawBackend =
1116	{
1117	/* u32Version */
1118	VD_IMGBACKEND_VERSION,
1119	/* pszBackendName */
1120	"RAW",
1121	/* uBackendCaps */
1122	VD_CAP_CREATE_FIXED \| VD_CAP_FILE \| VD_CAP_ASYNC \| VD_CAP_VFS,
1123	/* paFileExtensions */
1124	s_aRawFileExtensions,
1125	/* paConfigInfo */
1126	NULL,
1127	/* pfnProbe */
1128	rawProbe,
1129	/* pfnOpen */
1130	rawOpen,
1131	/* pfnCreate */
1132	rawCreate,
1133	/* pfnRename */
1134	rawRename,
1135	/* pfnClose */
1136	rawClose,
1137	/* pfnRead */
1138	rawRead,
1139	/* pfnWrite */
1140	rawWrite,
1141	/* pfnFlush */
1142	rawFlush,
1143	/* pfnDiscard */
1144	NULL,
1145	/* pfnGetVersion */
1146	rawGetVersion,
1147	/* pfnGetFileSize */
1148	rawGetFileSize,
1149	/* pfnGetPCHSGeometry */
1150	rawGetPCHSGeometry,
1151	/* pfnSetPCHSGeometry */
1152	rawSetPCHSGeometry,
1153	/* pfnGetLCHSGeometry */
1154	rawGetLCHSGeometry,
1155	/* pfnSetLCHSGeometry */
1156	rawSetLCHSGeometry,
1157	/* pfnQueryRegions */
1158	rawQueryRegions,
1159	/* pfnRegionListRelease */
1160	rawRegionListRelease,
1161	/* pfnGetImageFlags */
1162	rawGetImageFlags,
1163	/* pfnGetOpenFlags */
1164	rawGetOpenFlags,
1165	/* pfnSetOpenFlags */
1166	rawSetOpenFlags,
1167	/* pfnGetComment */
1168	rawGetComment,
1169	/* pfnSetComment */
1170	rawSetComment,
1171	/* pfnGetUuid */
1172	rawGetUuid,
1173	/* pfnSetUuid */
1174	rawSetUuid,
1175	/* pfnGetModificationUuid */
1176	rawGetModificationUuid,
1177	/* pfnSetModificationUuid */
1178	rawSetModificationUuid,
1179	/* pfnGetParentUuid */
1180	rawGetParentUuid,
1181	/* pfnSetParentUuid */
1182	rawSetParentUuid,
1183	/* pfnGetParentModificationUuid */
1184	rawGetParentModificationUuid,
1185	/* pfnSetParentModificationUuid */
1186	rawSetParentModificationUuid,
1187	/* pfnDump */
1188	rawDump,
1189	/* pfnGetTimestamp */
1190	NULL,
1191	/* pfnGetParentTimestamp */
1192	NULL,
1193	/* pfnSetParentTimestamp */
1194	NULL,
1195	/* pfnGetParentFilename */
1196	NULL,
1197	/* pfnSetParentFilename */
1198	NULL,
1199	/* pfnComposeLocation */
1200	genericFileComposeLocation,
1201	/* pfnComposeName */
1202	genericFileComposeName,
1203	/* pfnCompact */
1204	NULL,
1205	/* pfnResize */
1206	NULL,
1207	/* pfnRepair */
1208	NULL,
1209	/* pfnTraverseMetadata */
1210	NULL,
1211	/* u32VersionEnd */
1212	VD_IMGBACKEND_VERSION
1213	};

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source: vbox/trunk/src/VBox/Storage/RAW.cpp@ 96238

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