RAW.cpp@ 79965

Last change on this file since 79965 was 79965, checked in by vboxsync, 5 years ago
Storage: Added a desired format parameter to VDGetFormat() so Main can pass along the device type. Bumped the RAW backend down after the CUE and VISO to prevent (impossible) mixups of tiny files. Extended rawProbe() to look for a valid ISO-9660/UDF descriptor sequence on the image if the caller doesn't say it should be a floppy or hdd, only if that fail go by the extension. Note! the pfnProbe callback should probably get a score return parameter to indicate how confient the backend is about the probe result, as this would prevent the RAW backend from accidentally grabbing images which belongs to a plug-in. bugref:9151
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 44.8 KB

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1	/* $Id: RAW.cpp 79965 2019-07-24 20:32:32Z vboxsync $ */
2	/** @file
3	* RawHDDCore - Raw Disk image, Core Code.
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 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	AssertReturn((VALID_PTR(pszFilename) && *pszFilename), VERR_INVALID_PARAMETER);
529
530	/*
531	* Open the file and read the footer.
532	*/
533	int rc = vdIfIoIntFileOpen(pIfIo, pszFilename,
534	VDOpenFlagsToFileOpenFlags(VD_OPEN_FLAGS_READONLY,
535	false /* fCreate */),
536	&pStorage);
537	if (RT_SUCCESS(rc))
538	{
539	uint64_t cbFile;
540	rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile);
541	if (RT_SUCCESS(rc))
542	{
543	/*
544	* Detecting raw ISO and floppy images and keeping them apart isn't all
545	* that simple.
546	*
547	* - Both must be a multiple of their sector sizes, though
548	* that means that any ISO can also be a floppy, since 2048 is 512 * 4.
549	* - The ISO images must be 32KB and floppies are generally not larger
550	* than 2.88MB, but that leaves quite a bit of size overlap,
551	*
552	* So, the size cannot conclusively say whether something is one or the other.
553	*
554	* - The content of a normal ISO image is detectable, but not all ISO
555	* images need to follow that spec to work in a DVD ROM drive.
556	* - It is common for ISO images to start like a floppy with a boot sector
557	* at the very start of the image.
558	* - Floppies doesn't need to contain a DOS-style boot sector, it depends
559	* on the system it is formatted and/or intended for.
560	*
561	* So, the content cannot conclusively determine the type either.
562	*
563	* However, there are a number of cases, especially for ISOs, where we can
564	* say we a deal of confidence that something is an ISO image.
565	*/
566	const char * const pszSuffix = RTPathSuffix(pszFilename);
567
568	/*
569	* Start by checking for sure signs of an ISO 9660 / UDF image.
570	*/
571	rc = VERR_VD_RAW_INVALID_HEADER;
572	if ( (enmDesiredType == VDTYPE_INVALID \|\| enmDesiredType == VDTYPE_OPTICAL_DISC)
573	&& (cbFile % 2048) == 0
574	&& cbFile > 32768)
575	{
576	int rc2 = rawProbeIsIso9660OrUdf(pIfIo, pStorage);
577	if (RT_SUCCESS(rc2))
578	{
579	/* puScore = VDPROBE_SCORE_HIGH; /
580	*penmType = VDTYPE_OPTICAL_DISC;
581	rc = VINF_SUCCESS;
582	}
583	/* If that didn't work out, check by extension (the old way): */
584	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_OPTICAL_DISC))
585	{
586	/* puScore = VDPROBE_SCORE_LOW; /
587	*penmType = VDTYPE_OPTICAL_DISC;
588	rc = VINF_SUCCESS;
589	}
590	}
591
592	/*
593	* We could do something similar for floppies, i.e. check for a
594	* DOS'ish boot sector and thereby get a good match on most of the
595	* relevant floppy images out there.
596	*/
597	if ( RT_FAILURE(rc)
598	&& (enmDesiredType == VDTYPE_INVALID \|\| enmDesiredType == VDTYPE_FLOPPY)
599	&& (cbFile % 512) == 0
600	&& cbFile > 512
601	&& cbFile <= RAW_MAX_FLOPPY_IMG_SIZE)
602	{
603	/** @todo check if the content is DOSish. */
604	if (false)
605	{
606	/* puScore = VDPROBE_SCORE_HIGH; /
607	*penmType = VDTYPE_FLOPPY;
608	rc = VINF_SUCCESS;
609	}
610	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_FLOPPY))
611	{
612	/* puScore = VDPROBE_SCORE_LOW; /
613	*penmType = VDTYPE_FLOPPY;
614	rc = VINF_SUCCESS;
615	}
616	}
617
618	/*
619	* No luck? Go exclusively by extension like we've done since
620	* for ever and complain about the size if it doesn't fit expectations.
621	* We can get here if the desired type doesn't match the extension and such.
622	*/
623	if (RT_FAILURE(rc))
624	{
625	if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_OPTICAL_DISC))
626	{
627	if (cbFile % 2048)
628	rc = VERR_VD_RAW_SIZE_MODULO_2048;
629	else if (cbFile <= 32768)
630	rc = VERR_VD_RAW_SIZE_OPTICAL_TOO_SMALL;
631	else
632	{
633	Assert(enmDesiredType != VDTYPE_OPTICAL_DISC);
634	*penmType = VDTYPE_OPTICAL_DISC;
635	rc = VINF_SUCCESS;
636	}
637	}
638	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_FLOPPY))
639	{
640	if (cbFile % 512)
641	rc = VERR_VD_RAW_SIZE_MODULO_512;
642	else if (cbFile > RAW_MAX_FLOPPY_IMG_SIZE)
643	rc = VERR_VD_RAW_SIZE_FLOPPY_TOO_BIG;
644	else
645	{
646	Assert(cbFile == 0 \|\| enmDesiredType != VDTYPE_FLOPPY);
647	*penmType = VDTYPE_FLOPPY;
648	rc = VINF_SUCCESS;
649	}
650	}
651	else
652	rc = VERR_VD_RAW_INVALID_HEADER;
653	}
654	}
655	else
656	rc = VERR_VD_RAW_INVALID_HEADER;
657	}
658
659	if (pStorage)
660	vdIfIoIntFileClose(pIfIo, pStorage);
661
662	LogFlowFunc(("returns %Rrc\n", rc));
663	return rc;
664	}
665
666	/** @copydoc VDIMAGEBACKEND::pfnOpen */
667	static DECLCALLBACK(int) rawOpen(const char *pszFilename, unsigned uOpenFlags,
668	PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
669	VDTYPE enmType, void **ppBackendData)
670	{
671	LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x pVDIfsDisk=%#p pVDIfsImage=%#p enmType=%u ppBackendData=%#p\n",
672	pszFilename, uOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData));
673	int rc;
674	PRAWIMAGE pImage;
675
676	/* Check open flags. All valid flags are supported. */
677	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
678	AssertReturn((VALID_PTR(pszFilename) && *pszFilename), VERR_INVALID_PARAMETER);
679
680	pImage = (PRAWIMAGE)RTMemAllocZ(RT_UOFFSETOF(RAWIMAGE, RegionList.aRegions[1]));
681	if (RT_LIKELY(pImage))
682	{
683	pImage->pszFilename = pszFilename;
684	pImage->pStorage = NULL;
685	pImage->pVDIfsDisk = pVDIfsDisk;
686	pImage->pVDIfsImage = pVDIfsImage;
687
688	if (enmType == VDTYPE_OPTICAL_DISC)
689	pImage->cbSector = 2048;
690	else
691	pImage->cbSector = 512;
692
693	rc = rawOpenImage(pImage, uOpenFlags);
694	if (RT_SUCCESS(rc))
695	*ppBackendData = pImage;
696	else
697	RTMemFree(pImage);
698	}
699	else
700	rc = VERR_NO_MEMORY;
701
702	LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
703	return rc;
704	}
705
706	/** @copydoc VDIMAGEBACKEND::pfnCreate */
707	static DECLCALLBACK(int) rawCreate(const char *pszFilename, uint64_t cbSize,
708	unsigned uImageFlags, const char *pszComment,
709	PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
710	PCRTUUID pUuid, unsigned uOpenFlags,
711	unsigned uPercentStart, unsigned uPercentSpan,
712	PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
713	PVDINTERFACE pVDIfsOperation, VDTYPE enmType,
714	void **ppBackendData)
715	{
716	RT_NOREF1(pUuid);
717	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",
718	pszFilename, cbSize, uImageFlags, pszComment, pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags, uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation, enmType, ppBackendData));
719
720	/* Check the VD container type. Yes, hard disk must be allowed, otherwise
721	* various tools using this backend for hard disk images will fail. */
722	if (enmType != VDTYPE_HDD && enmType != VDTYPE_OPTICAL_DISC && enmType != VDTYPE_FLOPPY)
723	return VERR_VD_INVALID_TYPE;
724
725	int rc = VINF_SUCCESS;
726	PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation);
727
728	/* Check arguments. */
729	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
730	AssertReturn( VALID_PTR(pszFilename)
731	&& *pszFilename
732	&& VALID_PTR(pPCHSGeometry)
733	&& VALID_PTR(pLCHSGeometry), VERR_INVALID_PARAMETER);
734
735	PRAWIMAGE pImage = (PRAWIMAGE)RTMemAllocZ(RT_UOFFSETOF(RAWIMAGE, RegionList.aRegions[1]));
736	if (RT_LIKELY(pImage))
737	{
738	pImage->pszFilename = pszFilename;
739	pImage->pStorage = NULL;
740	pImage->pVDIfsDisk = pVDIfsDisk;
741	pImage->pVDIfsImage = pVDIfsImage;
742
743	rc = rawCreateImage(pImage, cbSize, uImageFlags, pszComment,
744	pPCHSGeometry, pLCHSGeometry, uOpenFlags,
745	pIfProgress, uPercentStart, uPercentSpan);
746	if (RT_SUCCESS(rc))
747	{
748	/* So far the image is opened in read/write mode. Make sure the
749	* image is opened in read-only mode if the caller requested that. */
750	if (uOpenFlags & VD_OPEN_FLAGS_READONLY)
751	{
752	rawFreeImage(pImage, false);
753	rc = rawOpenImage(pImage, uOpenFlags);
754	}
755
756	if (RT_SUCCESS(rc))
757	*ppBackendData = pImage;
758	}
759
760	if (RT_FAILURE(rc))
761	RTMemFree(pImage);
762	}
763	else
764	rc = VERR_NO_MEMORY;
765
766	LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
767	return rc;
768	}
769
770	/** @copydoc VDIMAGEBACKEND::pfnRename */
771	static DECLCALLBACK(int) rawRename(void pBackendData, const char pszFilename)
772	{
773	LogFlowFunc(("pBackendData=%#p pszFilename=%#p\n", pBackendData, pszFilename));
774	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
775
776	AssertReturn((pImage && pszFilename && *pszFilename), VERR_INVALID_PARAMETER);
777
778	/* Close the image. */
779	int rc = rawFreeImage(pImage, false);
780	if (RT_SUCCESS(rc))
781	{
782	/* Rename the file. */
783	rc = vdIfIoIntFileMove(pImage->pIfIo, pImage->pszFilename, pszFilename, 0);
784	if (RT_SUCCESS(rc))
785	{
786	/* Update pImage with the new information. */
787	pImage->pszFilename = pszFilename;
788
789	/* Open the old image with new name. */
790	rc = rawOpenImage(pImage, pImage->uOpenFlags);
791	}
792	else
793	{
794	/* The move failed, try to reopen the original image. */
795	int rc2 = rawOpenImage(pImage, pImage->uOpenFlags);
796	if (RT_FAILURE(rc2))
797	rc = rc2;
798	}
799	}
800
801	LogFlowFunc(("returns %Rrc\n", rc));
802	return rc;
803	}
804
805	/** @copydoc VDIMAGEBACKEND::pfnClose */
806	static DECLCALLBACK(int) rawClose(void *pBackendData, bool fDelete)
807	{
808	LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete));
809	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
810	int rc = rawFreeImage(pImage, fDelete);
811	RTMemFree(pImage);
812
813	LogFlowFunc(("returns %Rrc\n", rc));
814	return rc;
815	}
816
817	/** @copydoc VDIMAGEBACKEND::pfnRead */
818	static DECLCALLBACK(int) rawRead(void *pBackendData, uint64_t uOffset, size_t cbToRead,
819	PVDIOCTX pIoCtx, size_t *pcbActuallyRead)
820	{
821	int rc = VINF_SUCCESS;
822	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
823
824	/* For sequential access do not allow to go back. */
825	if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
826	&& uOffset < pImage->offAccess)
827	{
828	*pcbActuallyRead = 0;
829	return VERR_INVALID_PARAMETER;
830	}
831
832	rc = vdIfIoIntFileReadUser(pImage->pIfIo, pImage->pStorage, uOffset,
833	pIoCtx, cbToRead);
834	if (RT_SUCCESS(rc))
835	{
836	*pcbActuallyRead = cbToRead;
837	pImage->offAccess = uOffset + cbToRead;
838	}
839
840	return rc;
841	}
842
843	/** @copydoc VDIMAGEBACKEND::pfnWrite */
844	static DECLCALLBACK(int) rawWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite,
845	PVDIOCTX pIoCtx, size_t pcbWriteProcess, size_t pcbPreRead,
846	size_t *pcbPostRead, unsigned fWrite)
847	{
848	RT_NOREF1(fWrite);
849	int rc = VINF_SUCCESS;
850	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
851
852	/* For sequential access do not allow to go back. */
853	if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
854	&& uOffset < pImage->offAccess)
855	{
856	*pcbWriteProcess = 0;
857	*pcbPostRead = 0;
858	*pcbPreRead = 0;
859	return VERR_INVALID_PARAMETER;
860	}
861
862	rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage, uOffset,
863	pIoCtx, cbToWrite, NULL, NULL);
864	if (RT_SUCCESS(rc))
865	{
866	*pcbWriteProcess = cbToWrite;
867	*pcbPostRead = 0;
868	*pcbPreRead = 0;
869	pImage->offAccess = uOffset + cbToWrite;
870	}
871
872	return rc;
873	}
874
875	/** @copydoc VDIMAGEBACKEND::pfnFlush */
876	static DECLCALLBACK(int) rawFlush(void *pBackendData, PVDIOCTX pIoCtx)
877	{
878	int rc = VINF_SUCCESS;
879	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
880
881	if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
882	rc = vdIfIoIntFileFlush(pImage->pIfIo, pImage->pStorage, pIoCtx,
883	NULL, NULL);
884
885	return rc;
886	}
887
888	/** @copydoc VDIMAGEBACKEND::pfnGetVersion */
889	static DECLCALLBACK(unsigned) rawGetVersion(void *pBackendData)
890	{
891	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
892	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
893
894	AssertPtrReturn(pImage, 0);
895
896	return 1;
897	}
898
899	/** @copydoc VDIMAGEBACKEND::pfnGetFileSize */
900	static DECLCALLBACK(uint64_t) rawGetFileSize(void *pBackendData)
901	{
902	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
903	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
904
905	AssertPtrReturn(pImage, 0);
906
907	uint64_t cbFile = 0;
908	if (pImage->pStorage)
909	{
910	int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
911	if (RT_FAILURE(rc))
912	cbFile = 0; /* Make sure it is 0 */
913	}
914
915	LogFlowFunc(("returns %lld\n", cbFile));
916	return cbFile;
917	}
918
919	/** @copydoc VDIMAGEBACKEND::pfnGetPCHSGeometry */
920	static DECLCALLBACK(int) rawGetPCHSGeometry(void *pBackendData,
921	PVDGEOMETRY pPCHSGeometry)
922	{
923	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry));
924	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
925	int rc = VINF_SUCCESS;
926
927	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
928
929	if (pImage->PCHSGeometry.cCylinders)
930	*pPCHSGeometry = pImage->PCHSGeometry;
931	else
932	rc = VERR_VD_GEOMETRY_NOT_SET;
933
934	LogFlowFunc(("returns %Rrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
935	return rc;
936	}
937
938	/** @copydoc VDIMAGEBACKEND::pfnSetPCHSGeometry */
939	static DECLCALLBACK(int) rawSetPCHSGeometry(void *pBackendData,
940	PCVDGEOMETRY pPCHSGeometry)
941	{
942	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n",
943	pBackendData, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
944	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
945	int rc = VINF_SUCCESS;
946
947	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
948
949	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
950	rc = VERR_VD_IMAGE_READ_ONLY;
951	else
952	pImage->PCHSGeometry = *pPCHSGeometry;
953
954	LogFlowFunc(("returns %Rrc\n", rc));
955	return rc;
956	}
957
958	/** @copydoc VDIMAGEBACKEND::pfnGetLCHSGeometry */
959	static DECLCALLBACK(int) rawGetLCHSGeometry(void *pBackendData,
960	PVDGEOMETRY pLCHSGeometry)
961	{
962	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry));
963	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
964	int rc = VINF_SUCCESS;
965
966	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
967
968	if (pImage->LCHSGeometry.cCylinders)
969	*pLCHSGeometry = pImage->LCHSGeometry;
970	else
971	rc = VERR_VD_GEOMETRY_NOT_SET;
972
973	LogFlowFunc(("returns %Rrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
974	return rc;
975	}
976
977	/** @copydoc VDIMAGEBACKEND::pfnSetLCHSGeometry */
978	static DECLCALLBACK(int) rawSetLCHSGeometry(void *pBackendData,
979	PCVDGEOMETRY pLCHSGeometry)
980	{
981	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n",
982	pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
983	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
984	int rc = VINF_SUCCESS;
985
986	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
987
988	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
989	rc = VERR_VD_IMAGE_READ_ONLY;
990	else
991	pImage->LCHSGeometry = *pLCHSGeometry;
992
993	LogFlowFunc(("returns %Rrc\n", rc));
994	return rc;
995	}
996
997	/** @copydoc VDIMAGEBACKEND::pfnQueryRegions */
998	static DECLCALLBACK(int) rawQueryRegions(void pBackendData, PCVDREGIONLIST ppRegionList)
999	{
1000	LogFlowFunc(("pBackendData=%#p ppRegionList=%#p\n", pBackendData, ppRegionList));
1001	PRAWIMAGE pThis = (PRAWIMAGE)pBackendData;
1002
1003	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
1004
1005	*ppRegionList = &pThis->RegionList;
1006	LogFlowFunc(("returns %Rrc\n", VINF_SUCCESS));
1007	return VINF_SUCCESS;
1008	}
1009
1010	/** @copydoc VDIMAGEBACKEND::pfnRegionListRelease */
1011	static DECLCALLBACK(void) rawRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList)
1012	{
1013	RT_NOREF1(pRegionList);
1014	LogFlowFunc(("pBackendData=%#p pRegionList=%#p\n", pBackendData, pRegionList));
1015	PRAWIMAGE pThis = (PRAWIMAGE)pBackendData;
1016	AssertPtr(pThis); RT_NOREF(pThis);
1017
1018	/* Nothing to do here. */
1019	}
1020
1021	/** @copydoc VDIMAGEBACKEND::pfnGetImageFlags */
1022	static DECLCALLBACK(unsigned) rawGetImageFlags(void *pBackendData)
1023	{
1024	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1025	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1026
1027	AssertPtrReturn(pImage, 0);
1028
1029	LogFlowFunc(("returns %#x\n", pImage->uImageFlags));
1030	return pImage->uImageFlags;
1031	}
1032
1033	/** @copydoc VDIMAGEBACKEND::pfnGetOpenFlags */
1034	static DECLCALLBACK(unsigned) rawGetOpenFlags(void *pBackendData)
1035	{
1036	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1037	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1038
1039	AssertPtrReturn(pImage, 0);
1040
1041	LogFlowFunc(("returns %#x\n", pImage->uOpenFlags));
1042	return pImage->uOpenFlags;
1043	}
1044
1045	/** @copydoc VDIMAGEBACKEND::pfnSetOpenFlags */
1046	static DECLCALLBACK(int) rawSetOpenFlags(void *pBackendData, unsigned uOpenFlags)
1047	{
1048	LogFlowFunc(("pBackendData=%#p\n uOpenFlags=%#x", pBackendData, uOpenFlags));
1049	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1050	int rc = VINF_SUCCESS;
1051
1052	/* Image must be opened and the new flags must be valid. */
1053	if (!pImage \|\| (uOpenFlags & ~( VD_OPEN_FLAGS_READONLY \| VD_OPEN_FLAGS_INFO
1054	\| VD_OPEN_FLAGS_ASYNC_IO \| VD_OPEN_FLAGS_SHAREABLE
1055	\| VD_OPEN_FLAGS_SEQUENTIAL \| VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS)))
1056	rc = VERR_INVALID_PARAMETER;
1057	else
1058	{
1059	/* Implement this operation via reopening the image. */
1060	rc = rawFreeImage(pImage, false);
1061	if (RT_SUCCESS(rc))
1062	rc = rawOpenImage(pImage, uOpenFlags);
1063	}
1064
1065	LogFlowFunc(("returns %Rrc\n", rc));
1066	return rc;
1067	}
1068
1069	/** @copydoc VDIMAGEBACKEND::pfnGetComment */
1070	VD_BACKEND_CALLBACK_GET_COMMENT_DEF_NOT_SUPPORTED(rawGetComment);
1071
1072	/** @copydoc VDIMAGEBACKEND::pfnSetComment */
1073	VD_BACKEND_CALLBACK_SET_COMMENT_DEF_NOT_SUPPORTED(rawSetComment, PRAWIMAGE);
1074
1075	/** @copydoc VDIMAGEBACKEND::pfnGetUuid */
1076	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetUuid);
1077
1078	/** @copydoc VDIMAGEBACKEND::pfnSetUuid */
1079	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetUuid, PRAWIMAGE);
1080
1081	/** @copydoc VDIMAGEBACKEND::pfnGetModificationUuid */
1082	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetModificationUuid);
1083
1084	/** @copydoc VDIMAGEBACKEND::pfnSetModificationUuid */
1085	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetModificationUuid, PRAWIMAGE);
1086
1087	/** @copydoc VDIMAGEBACKEND::pfnGetParentUuid */
1088	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetParentUuid);
1089
1090	/** @copydoc VDIMAGEBACKEND::pfnSetParentUuid */
1091	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetParentUuid, PRAWIMAGE);
1092
1093	/** @copydoc VDIMAGEBACKEND::pfnGetParentModificationUuid */
1094	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetParentModificationUuid);
1095
1096	/** @copydoc VDIMAGEBACKEND::pfnSetParentModificationUuid */
1097	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetParentModificationUuid, PRAWIMAGE);
1098
1099	/** @copydoc VDIMAGEBACKEND::pfnDump */
1100	static DECLCALLBACK(void) rawDump(void *pBackendData)
1101	{
1102	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1103
1104	AssertPtrReturnVoid(pImage);
1105	vdIfErrorMessage(pImage->pIfError, "Header: Geometry PCHS=%u/%u/%u LCHS=%u/%u/%u cbSector=%llu\n",
1106	pImage->PCHSGeometry.cCylinders, pImage->PCHSGeometry.cHeads, pImage->PCHSGeometry.cSectors,
1107	pImage->LCHSGeometry.cCylinders, pImage->LCHSGeometry.cHeads, pImage->LCHSGeometry.cSectors,
1108	pImage->cbSize / 512);
1109	}
1110
1111
1112
1113	const VDIMAGEBACKEND g_RawBackend =
1114	{
1115	/* u32Version */
1116	VD_IMGBACKEND_VERSION,
1117	/* pszBackendName */
1118	"RAW",
1119	/* uBackendCaps */
1120	VD_CAP_CREATE_FIXED \| VD_CAP_FILE \| VD_CAP_ASYNC \| VD_CAP_VFS,
1121	/* paFileExtensions */
1122	s_aRawFileExtensions,
1123	/* paConfigInfo */
1124	NULL,
1125	/* pfnProbe */
1126	rawProbe,
1127	/* pfnOpen */
1128	rawOpen,
1129	/* pfnCreate */
1130	rawCreate,
1131	/* pfnRename */
1132	rawRename,
1133	/* pfnClose */
1134	rawClose,
1135	/* pfnRead */
1136	rawRead,
1137	/* pfnWrite */
1138	rawWrite,
1139	/* pfnFlush */
1140	rawFlush,
1141	/* pfnDiscard */
1142	NULL,
1143	/* pfnGetVersion */
1144	rawGetVersion,
1145	/* pfnGetFileSize */
1146	rawGetFileSize,
1147	/* pfnGetPCHSGeometry */
1148	rawGetPCHSGeometry,
1149	/* pfnSetPCHSGeometry */
1150	rawSetPCHSGeometry,
1151	/* pfnGetLCHSGeometry */
1152	rawGetLCHSGeometry,
1153	/* pfnSetLCHSGeometry */
1154	rawSetLCHSGeometry,
1155	/* pfnQueryRegions */
1156	rawQueryRegions,
1157	/* pfnRegionListRelease */
1158	rawRegionListRelease,
1159	/* pfnGetImageFlags */
1160	rawGetImageFlags,
1161	/* pfnGetOpenFlags */
1162	rawGetOpenFlags,
1163	/* pfnSetOpenFlags */
1164	rawSetOpenFlags,
1165	/* pfnGetComment */
1166	rawGetComment,
1167	/* pfnSetComment */
1168	rawSetComment,
1169	/* pfnGetUuid */
1170	rawGetUuid,
1171	/* pfnSetUuid */
1172	rawSetUuid,
1173	/* pfnGetModificationUuid */
1174	rawGetModificationUuid,
1175	/* pfnSetModificationUuid */
1176	rawSetModificationUuid,
1177	/* pfnGetParentUuid */
1178	rawGetParentUuid,
1179	/* pfnSetParentUuid */
1180	rawSetParentUuid,
1181	/* pfnGetParentModificationUuid */
1182	rawGetParentModificationUuid,
1183	/* pfnSetParentModificationUuid */
1184	rawSetParentModificationUuid,
1185	/* pfnDump */
1186	rawDump,
1187	/* pfnGetTimestamp */
1188	NULL,
1189	/* pfnGetParentTimestamp */
1190	NULL,
1191	/* pfnSetParentTimestamp */
1192	NULL,
1193	/* pfnGetParentFilename */
1194	NULL,
1195	/* pfnSetParentFilename */
1196	NULL,
1197	/* pfnComposeLocation */
1198	genericFileComposeLocation,
1199	/* pfnComposeName */
1200	genericFileComposeName,
1201	/* pfnCompact */
1202	NULL,
1203	/* pfnResize */
1204	NULL,
1205	/* pfnRepair */
1206	NULL,
1207	/* pfnTraverseMetadata */
1208	NULL,
1209	/* u32VersionEnd */
1210	VD_IMGBACKEND_VERSION
1211	};

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source: vbox/trunk/src/VBox/Storage/RAW.cpp@ 79965

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