RAW.cpp@ 103251

Last change on this file since 103251 was 103227, checked in by vboxsync, 10 months ago
Storage/RAW.cpp: 63.5MB floppy support (validation kit boot sector testcases). bugref:10371
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1	/* $Id: RAW.cpp 103227 2024-02-06 14:19:55Z vboxsync $ */
2	/** @file
3	* RawHDDCore - Raw Disk image, Core Code.
4	*/
5
6	/*
7	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_VD_RAW
33	#include <VBox/vd-plugin.h>
34	#include <VBox/err.h>
35
36	#include <VBox/log.h>
37	#include <iprt/assert.h>
38	#include <iprt/alloc.h>
39	#include <iprt/path.h>
40	#include <iprt/formats/iso9660.h>
41	#include <iprt/formats/udf.h>
42
43	#include "VDBackends.h"
44	#include "VDBackendsInline.h"
45
46
47	/*********************************************************************************************************************************
48	* Constants And Macros, Structures and Typedefs *
49	*********************************************************************************************************************************/
50
51	/**
52	* Raw image data structure.
53	*/
54	typedef struct RAWIMAGE
55	{
56	/** Image name. */
57	const char *pszFilename;
58	/** Storage handle. */
59	PVDIOSTORAGE pStorage;
60
61	/** Pointer to the per-disk VD interface list. */
62	PVDINTERFACE pVDIfsDisk;
63	/** Pointer to the per-image VD interface list. */
64	PVDINTERFACE pVDIfsImage;
65	/** Error interface. */
66	PVDINTERFACEERROR pIfError;
67	/** I/O interface. */
68	PVDINTERFACEIOINT pIfIo;
69
70	/** Open flags passed by VBoxHD layer. */
71	unsigned uOpenFlags;
72	/** Image flags defined during creation or determined during open. */
73	unsigned uImageFlags;
74	/** Total size of the image. */
75	uint64_t cbSize;
76	/** Position in the image (only truly used for sequential access). */
77	uint64_t offAccess;
78	/** Flag if this is a newly created image. */
79	bool fCreate;
80	/** Physical geometry of this image. */
81	VDGEOMETRY PCHSGeometry;
82	/** Logical geometry of this image. */
83	VDGEOMETRY LCHSGeometry;
84	/** Sector size of the image. */
85	uint32_t cbSector;
86	/** The static region list. */
87	VDREGIONLIST RegionList;
88	} RAWIMAGE, *PRAWIMAGE;
89
90
91	/** Size of write operations when filling an image with zeroes. */
92	#define RAW_FILL_SIZE (128 * _1K)
93
94	#if 1
95	/** The maximum reasonable size of a floppy image - (fake 63.5MB valkit floppies). */
96	# define RAW_MAX_FLOPPY_IMG_SIZE (255 * 2 * 255 * 512)
97	#else
98	/** The maximum reasonable size of a floppy image (big format 2.88MB medium). */
99	# define RAW_MAX_FLOPPY_IMG_SIZE (512 * 82 * 48 * 2)
100	#endif
101
102
103	/*********************************************************************************************************************************
104	* Static Variables *
105	*********************************************************************************************************************************/
106
107	/** NULL-terminated array of supported file extensions. */
108	static const VDFILEEXTENSION s_aRawFileExtensions[] =
109	{
110	{"iso", VDTYPE_OPTICAL_DISC},
111	{"cdr", VDTYPE_OPTICAL_DISC},
112	{"img", VDTYPE_FLOPPY},
113	{"ima", VDTYPE_FLOPPY},
114	{"dsk", VDTYPE_FLOPPY},
115	{"flp", VDTYPE_FLOPPY},
116	{"vfd", VDTYPE_FLOPPY},
117	{NULL, VDTYPE_INVALID}
118	};
119
120
121	/*********************************************************************************************************************************
122	* Internal Functions *
123	*********************************************************************************************************************************/
124
125	/**
126	* Internal. Flush image data to disk.
127	*/
128	static int rawFlushImage(PRAWIMAGE pImage)
129	{
130	int rc = VINF_SUCCESS;
131
132	if ( pImage->pStorage
133	&& !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
134	rc = vdIfIoIntFileFlushSync(pImage->pIfIo, pImage->pStorage);
135
136	return rc;
137	}
138
139	/**
140	* Internal. Free all allocated space for representing an image except pImage,
141	* and optionally delete the image from disk.
142	*/
143	static int rawFreeImage(PRAWIMAGE pImage, bool fDelete)
144	{
145	int rc = VINF_SUCCESS;
146
147	/* Freeing a never allocated image (e.g. because the open failed) is
148	* not signalled as an error. After all nothing bad happens. */
149	if (pImage)
150	{
151	if (pImage->pStorage)
152	{
153	/* No point updating the file that is deleted anyway. */
154	if (!fDelete)
155	{
156	/* For newly created images in sequential mode fill it to
157	* the nominal size. */
158	if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
159	&& !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
160	&& pImage->fCreate)
161	{
162	/* Fill rest of image with zeroes, a must for sequential
163	* images to reach the nominal size. */
164	uint64_t uOff;
165	void *pvBuf = RTMemTmpAllocZ(RAW_FILL_SIZE);
166	if (RT_LIKELY(pvBuf))
167	{
168	uOff = pImage->offAccess;
169	/* Write data to all image blocks. */
170	while (uOff < pImage->cbSize)
171	{
172	unsigned cbChunk = (unsigned)RT_MIN(pImage->cbSize - uOff,
173	RAW_FILL_SIZE);
174
175	rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
176	uOff, pvBuf, cbChunk);
177	if (RT_FAILURE(rc))
178	break;
179
180	uOff += cbChunk;
181	}
182
183	RTMemTmpFree(pvBuf);
184	}
185	else
186	rc = VERR_NO_MEMORY;
187	}
188	rawFlushImage(pImage);
189	}
190
191	rc = vdIfIoIntFileClose(pImage->pIfIo, pImage->pStorage);
192	pImage->pStorage = NULL;
193	}
194
195	if (fDelete && pImage->pszFilename)
196	vdIfIoIntFileDelete(pImage->pIfIo, pImage->pszFilename);
197	}
198
199	LogFlowFunc(("returns %Rrc\n", rc));
200	return rc;
201	}
202
203	/**
204	* Internal: Open an image, constructing all necessary data structures.
205	*/
206	static int rawOpenImage(PRAWIMAGE pImage, unsigned uOpenFlags)
207	{
208	pImage->uOpenFlags = uOpenFlags;
209	pImage->fCreate = false;
210
211	pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
212	pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
213	AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
214
215	/* Open the image. */
216	int rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
217	VDOpenFlagsToFileOpenFlags(uOpenFlags,
218	false /* fCreate */),
219	&pImage->pStorage);
220	if (RT_SUCCESS(rc))
221	{
222	rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &pImage->cbSize);
223	if ( RT_SUCCESS(rc)
224	&& !(pImage->cbSize % 512))
225	pImage->uImageFlags \|= VD_IMAGE_FLAGS_FIXED;
226	else if (RT_SUCCESS(rc))
227	rc = VERR_VD_RAW_SIZE_MODULO_512;
228	}
229	/* else: Do NOT signal an appropriate error here, as the VD layer has the
230	* choice of retrying the open if it failed. */
231
232	if (RT_SUCCESS(rc))
233	{
234	PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
235	pImage->RegionList.fFlags = 0;
236	pImage->RegionList.cRegions = 1;
237
238	pRegion->offRegion = 0; /* Disk start. */
239	pRegion->cbBlock = pImage->cbSector;
240	pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
241	pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
242	pRegion->cbData = pImage->cbSector;
243	pRegion->cbMetadata = 0;
244	pRegion->cRegionBlocksOrBytes = pImage->cbSize;
245	}
246	else
247	rawFreeImage(pImage, false);
248	return rc;
249	}
250
251	/**
252	* Internal: Create a raw image.
253	*/
254	static int rawCreateImage(PRAWIMAGE pImage, uint64_t cbSize,
255	unsigned uImageFlags, const char *pszComment,
256	PCVDGEOMETRY pPCHSGeometry,
257	PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
258	PVDINTERFACEPROGRESS pIfProgress,
259	unsigned uPercentStart, unsigned uPercentSpan)
260	{
261	RT_NOREF1(pszComment);
262	int rc = VINF_SUCCESS;
263
264	pImage->fCreate = true;
265	pImage->uOpenFlags = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;
266	pImage->uImageFlags = uImageFlags \| VD_IMAGE_FLAGS_FIXED;
267	pImage->PCHSGeometry = *pPCHSGeometry;
268	pImage->LCHSGeometry = *pLCHSGeometry;
269	pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
270	pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
271	AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
272
273	if (!(pImage->uImageFlags & VD_IMAGE_FLAGS_DIFF))
274	{
275	/* Create image file. */
276	uint32_t fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
277	if (uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL)
278	fOpen &= ~RTFILE_O_READ;
279	rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
280	if (RT_SUCCESS(rc))
281	{
282	if (!(uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL))
283	{
284	RTFOFF cbFree = 0;
285
286	/* Check the free space on the disk and leave early if there is not
287	* sufficient space available. */
288	rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
289	if (RT_FAILURE(rc) /* ignore errors */ \|\| ((uint64_t)cbFree >= cbSize))
290	{
291	rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pImage->pStorage, cbSize, 0 /* fFlags */,
292	pIfProgress, uPercentStart, uPercentSpan);
293	if (RT_SUCCESS(rc))
294	{
295	vdIfProgress(pIfProgress, uPercentStart + uPercentSpan * 98 / 100);
296
297	pImage->cbSize = cbSize;
298	rc = rawFlushImage(pImage);
299	}
300	}
301	else
302	rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS, N_("Raw: disk would overflow creating image '%s'"), pImage->pszFilename);
303	}
304	else
305	{
306	rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, cbSize);
307	if (RT_SUCCESS(rc))
308	pImage->cbSize = cbSize;
309	}
310	}
311	else
312	rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Raw: cannot create image '%s'"), pImage->pszFilename);
313	}
314	else
315	rc = vdIfError(pImage->pIfError, VERR_VD_RAW_INVALID_TYPE, RT_SRC_POS, N_("Raw: cannot create diff image '%s'"), pImage->pszFilename);
316
317	if (RT_SUCCESS(rc))
318	{
319	PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
320	pImage->RegionList.fFlags = 0;
321	pImage->RegionList.cRegions = 1;
322
323	pRegion->offRegion = 0; /* Disk start. */
324	pRegion->cbBlock = pImage->cbSector;
325	pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
326	pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
327	pRegion->cbData = pImage->cbSector;
328	pRegion->cbMetadata = 0;
329	pRegion->cRegionBlocksOrBytes = pImage->cbSize;
330
331	vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);
332	}
333
334	if (RT_FAILURE(rc))
335	rawFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
336	return rc;
337	}
338
339	/**
340	* Worker for rawProbe that checks if the file looks like it contains an ISO
341	* 9660 or UDF descriptor sequence at the expected offset.
342	*
343	* Caller already checked if the size is suitable for ISOs.
344	*
345	* @returns IPRT status code. Success if detected ISO 9660 or UDF, failure if
346	* not.
347	*
348	* @note Code is a modified version of rtFsIsoVolTryInit() IPRT (isovfs.cpp).
349	*/
350	static int rawProbeIsIso9660OrUdf(PVDINTERFACEIOINT pIfIo, PVDIOSTORAGE pStorage)
351	{
352	PRTERRINFO pErrInfo = NULL;
353	const uint32_t cbSector = _2K;
354
355	union
356	{
357	uint8_t ab[_2K];
358	ISO9660VOLDESCHDR VolDescHdr;
359	} Buf;
360	Assert(cbSector <= sizeof(Buf));
361	RT_ZERO(Buf);
362
363	uint8_t uUdfLevel = 0;
364	uint64_t offUdfBootVolDesc = UINT64_MAX;
365
366	uint32_t cPrimaryVolDescs = 0;
367	uint32_t cSupplementaryVolDescs = 0;
368	uint32_t cBootRecordVolDescs = 0;
369	uint32_t offVolDesc = 16 * cbSector;
370	enum
371	{
372	kStateStart = 0,
373	kStateNoSeq,
374	kStateCdSeq,
375	kStateUdfSeq
376	} enmState = kStateStart;
377	for (uint32_t iVolDesc = 0; ; iVolDesc++, offVolDesc += cbSector)
378	{
379	if (iVolDesc > 32)
380	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "More than 32 volume descriptors, doesn't seem right...");
381
382	/* Read the next one and check the signature. */
383	int rc = vdIfIoIntFileReadSync(pIfIo, pStorage, offVolDesc, &Buf, cbSector);
384	if (RT_FAILURE(rc))
385	return RTERRINFO_LOG_SET_F(pErrInfo, rc, "Unable to read volume descriptor #%u", iVolDesc);
386
387	#define MATCH_STD_ID(a_achStdId1, a_szStdId2) \
388	( (a_achStdId1)[0] == (a_szStdId2)[0] \
389	&& (a_achStdId1)[1] == (a_szStdId2)[1] \
390	&& (a_achStdId1)[2] == (a_szStdId2)[2] \
391	&& (a_achStdId1)[3] == (a_szStdId2)[3] \
392	&& (a_achStdId1)[4] == (a_szStdId2)[4] )
393	#define MATCH_HDR(a_pStd, a_bType2, a_szStdId2, a_bVer2) \
394	( MATCH_STD_ID((a_pStd)->achStdId, a_szStdId2) \
395	&& (a_pStd)->bDescType == (a_bType2) \
396	&& (a_pStd)->bDescVersion == (a_bVer2) )
397
398	/*
399	* ISO 9660 ("CD001").
400	*/
401	if ( ( enmState == kStateStart
402	\|\| enmState == kStateCdSeq
403	\|\| enmState == kStateNoSeq)
404	&& MATCH_STD_ID(Buf.VolDescHdr.achStdId, ISO9660VOLDESC_STD_ID) )
405	{
406	enmState = kStateCdSeq;
407
408	/* Do type specific handling. */
409	Log(("RAW/ISO9660: volume desc #%u: type=%#x\n", iVolDesc, Buf.VolDescHdr.bDescType));
410	if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_PRIMARY)
411	{
412	cPrimaryVolDescs++;
413	if (Buf.VolDescHdr.bDescVersion != ISO9660PRIMARYVOLDESC_VERSION)
414	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
415	"Unsupported primary volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
416	if (cPrimaryVolDescs == 1)
417	{ /rc = rtFsIsoVolHandlePrimaryVolDesc(pThis, &Buf.PrimaryVolDesc, offVolDesc, &RootDir, &offRootDirRec, pErrInfo);/ }
418	else if (cPrimaryVolDescs == 2)
419	Log(("RAW/ISO9660: ignoring 2nd primary descriptor\n")); /* so we can read the w2k3 ifs kit */
420	else
421	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT, "More than one primary volume descriptor");
422	}
423	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_SUPPLEMENTARY)
424	{
425	cSupplementaryVolDescs++;
426	if (Buf.VolDescHdr.bDescVersion != ISO9660SUPVOLDESC_VERSION)
427	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
428	"Unsupported supplemental volume descriptor version: %#x", Buf.VolDescHdr.bDescVersion);
429	/*rc = rtFsIsoVolHandleSupplementaryVolDesc(pThis, &Buf.SupVolDesc, offVolDesc, &bJolietUcs2Level, &JolietRootDir,
430	&offJolietRootDirRec, pErrInfo);*/
431	}
432	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_BOOT_RECORD)
433	{
434	cBootRecordVolDescs++;
435	}
436	else if (Buf.VolDescHdr.bDescType == ISO9660VOLDESC_TYPE_TERMINATOR)
437	{
438	if (!cPrimaryVolDescs)
439	return RTERRINFO_LOG_SET(pErrInfo, VERR_VFS_BOGUS_FORMAT, "No primary volume descriptor");
440	enmState = kStateNoSeq;
441	}
442	else
443	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNSUPPORTED_FORMAT,
444	"Unknown volume descriptor: %#x", Buf.VolDescHdr.bDescType);
445	}
446	/*
447	* UDF volume recognition sequence (VRS).
448	*/
449	else if ( ( enmState == kStateNoSeq
450	\|\| enmState == kStateStart)
451	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BEGIN, UDF_EXT_VOL_DESC_VERSION) )
452	{
453	if (uUdfLevel == 0)
454	enmState = kStateUdfSeq;
455	else
456	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BEA01 sequence is supported");
457	}
458	else if ( enmState == kStateUdfSeq
459	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_02, UDF_EXT_VOL_DESC_VERSION) )
460	uUdfLevel = 2;
461	else if ( enmState == kStateUdfSeq
462	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_NSR_03, UDF_EXT_VOL_DESC_VERSION) )
463	uUdfLevel = 3;
464	else if ( enmState == kStateUdfSeq
465	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_BOOT, UDF_EXT_VOL_DESC_VERSION) )
466	{
467	if (offUdfBootVolDesc == UINT64_MAX)
468	offUdfBootVolDesc = iVolDesc * cbSector;
469	else
470	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Only one BOOT2 descriptor is supported");
471	}
472	else if ( enmState == kStateUdfSeq
473	&& MATCH_HDR(&Buf.VolDescHdr, UDF_EXT_VOL_DESC_TYPE, UDF_EXT_VOL_DESC_STD_ID_TERM, UDF_EXT_VOL_DESC_VERSION) )
474	{
475	if (uUdfLevel != 0)
476	enmState = kStateNoSeq;
477	else
478	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT, "Found BEA01 & TEA01, but no NSR02 or NSR03 descriptors");
479	}
480	/*
481	* Unknown, probably the end.
482	*/
483	else if (enmState == kStateNoSeq)
484	break;
485	else if (enmState == kStateStart)
486	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
487	"Not ISO? Unable to recognize volume descriptor signature: %.5Rhxs", Buf.VolDescHdr.achStdId);
488	else if (enmState == kStateCdSeq)
489	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
490	"Missing ISO 9660 terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId);
491	else if (enmState == kStateUdfSeq)
492	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_BOGUS_FORMAT,
493	"Missing UDF terminator volume descriptor? (Found %.5Rhxs)", Buf.VolDescHdr.achStdId);
494	else
495	return RTERRINFO_LOG_SET_F(pErrInfo, VERR_VFS_UNKNOWN_FORMAT,
496	"Unknown volume descriptor signature found at sector %u: %.5Rhxs",
497	16 + iVolDesc, Buf.VolDescHdr.achStdId);
498	}
499
500	return VINF_SUCCESS;
501	}
502
503	/**
504	* Checks the given extension array for the given suffix and type.
505	*
506	* @returns true if found in the list, false if not.
507	* @param paExtensions The extension array to check against.
508	* @param pszSuffix The suffix to look for. Can be NULL.
509	* @param enmType The image type to look for.
510	*/
511	static bool rawProbeContainsExtension(const VDFILEEXTENSION paExtensions, const char pszSuffix, VDTYPE enmType)
512	{
513	if (pszSuffix)
514	{
515	if (*pszSuffix == '.')
516	pszSuffix++;
517	if (*pszSuffix != '\0')
518	{
519	for (size_t i = 0;; i++)
520	{
521	if (!paExtensions[i].pszExtension)
522	break;
523	if ( paExtensions[i].enmType == enmType
524	&& RTStrICmpAscii(paExtensions[i].pszExtension, pszSuffix) == 0)
525	return true;
526	}
527	}
528	}
529	return false;
530	}
531
532
533	/** @copydoc VDIMAGEBACKEND::pfnProbe */
534	static DECLCALLBACK(int) rawProbe(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
535	PVDINTERFACE pVDIfsImage, VDTYPE enmDesiredType, VDTYPE *penmType)
536	{
537	RT_NOREF(pVDIfsDisk, enmDesiredType);
538	LogFlowFunc(("pszFilename=\"%s\" pVDIfsDisk=%#p pVDIfsImage=%#p\n", pszFilename, pVDIfsDisk, pVDIfsImage));
539	PVDIOSTORAGE pStorage = NULL;
540	PVDINTERFACEIOINT pIfIo = VDIfIoIntGet(pVDIfsImage);
541
542	AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER);
543	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
544	AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
545
546	/*
547	* Open the file and read the footer.
548	*/
549	int rc = vdIfIoIntFileOpen(pIfIo, pszFilename,
550	VDOpenFlagsToFileOpenFlags(VD_OPEN_FLAGS_READONLY,
551	false /* fCreate */),
552	&pStorage);
553	if (RT_SUCCESS(rc))
554	{
555	uint64_t cbFile;
556	rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile);
557	if (RT_SUCCESS(rc))
558	{
559	/*
560	* Detecting raw ISO and floppy images and keeping them apart isn't all
561	* that simple.
562	*
563	* - Both must be a multiple of their sector sizes, though
564	* that means that any ISO can also be a floppy, since 2048 is 512 * 4.
565	* - The ISO images must be 32KB and floppies are generally not larger
566	* than 2.88MB, but that leaves quite a bit of size overlap,
567	*
568	* So, the size cannot conclusively say whether something is one or the other.
569	*
570	* - The content of a normal ISO image is detectable, but not all ISO
571	* images need to follow that spec to work in a DVD ROM drive.
572	* - It is common for ISO images to start like a floppy with a boot sector
573	* at the very start of the image.
574	* - Floppies doesn't need to contain a DOS-style boot sector, it depends
575	* on the system it is formatted and/or intended for.
576	*
577	* So, the content cannot conclusively determine the type either.
578	*
579	* However, there are a number of cases, especially for ISOs, where we can
580	* say we a deal of confidence that something is an ISO image.
581	*/
582	const char * const pszSuffix = RTPathSuffix(pszFilename);
583
584	/*
585	* Start by checking for sure signs of an ISO 9660 / UDF image.
586	*/
587	rc = VERR_VD_RAW_INVALID_HEADER;
588	if ( (enmDesiredType == VDTYPE_INVALID \|\| enmDesiredType == VDTYPE_OPTICAL_DISC)
589	&& (cbFile % 2048) == 0
590	&& cbFile > 32768)
591	{
592	int rc2 = rawProbeIsIso9660OrUdf(pIfIo, pStorage);
593	if (RT_SUCCESS(rc2))
594	{
595	/* puScore = VDPROBE_SCORE_HIGH; /
596	*penmType = VDTYPE_OPTICAL_DISC;
597	rc = VINF_SUCCESS;
598	}
599	/* If that didn't work out, check by extension (the old way): */
600	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_OPTICAL_DISC))
601	{
602	/* puScore = VDPROBE_SCORE_LOW; /
603	*penmType = VDTYPE_OPTICAL_DISC;
604	rc = VINF_SUCCESS;
605	}
606	}
607
608	/*
609	* We could do something similar for floppies, i.e. check for a
610	* DOS'ish boot sector and thereby get a good match on most of the
611	* relevant floppy images out there.
612	*/
613	if ( RT_FAILURE(rc)
614	&& (enmDesiredType == VDTYPE_INVALID \|\| enmDesiredType == VDTYPE_FLOPPY)
615	&& (cbFile % 512) == 0
616	&& cbFile >= 512
617	&& cbFile <= RAW_MAX_FLOPPY_IMG_SIZE)
618	{
619	/** @todo check if the content is DOSish. */
620	if (false)
621	{
622	/* puScore = VDPROBE_SCORE_HIGH; /
623	*penmType = VDTYPE_FLOPPY;
624	rc = VINF_SUCCESS;
625	}
626	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_FLOPPY))
627	{
628	/* puScore = VDPROBE_SCORE_LOW; /
629	*penmType = VDTYPE_FLOPPY;
630	rc = VINF_SUCCESS;
631	}
632	}
633
634	/*
635	* No luck? Go exclusively by extension like we've done since
636	* for ever and complain about the size if it doesn't fit expectations.
637	* We can get here if the desired type doesn't match the extension and such.
638	*/
639	if (RT_FAILURE(rc))
640	{
641	if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_OPTICAL_DISC))
642	{
643	if (cbFile % 2048)
644	rc = VERR_VD_RAW_SIZE_MODULO_2048;
645	else if (cbFile <= 32768)
646	rc = VERR_VD_RAW_SIZE_OPTICAL_TOO_SMALL;
647	else
648	{
649	Assert(enmDesiredType != VDTYPE_OPTICAL_DISC);
650	*penmType = VDTYPE_OPTICAL_DISC;
651	rc = VINF_SUCCESS;
652	}
653	}
654	else if (rawProbeContainsExtension(s_aRawFileExtensions, pszSuffix, VDTYPE_FLOPPY))
655	{
656	if (cbFile % 512)
657	rc = VERR_VD_RAW_SIZE_MODULO_512;
658	else if (cbFile > RAW_MAX_FLOPPY_IMG_SIZE)
659	rc = VERR_VD_RAW_SIZE_FLOPPY_TOO_BIG;
660	else
661	{
662	Assert(cbFile == 0 \|\| enmDesiredType != VDTYPE_FLOPPY);
663	*penmType = VDTYPE_FLOPPY;
664	rc = VINF_SUCCESS;
665	}
666	}
667	else
668	rc = VERR_VD_RAW_INVALID_HEADER;
669	}
670	}
671	else
672	rc = VERR_VD_RAW_INVALID_HEADER;
673	}
674
675	if (pStorage)
676	vdIfIoIntFileClose(pIfIo, pStorage);
677
678	LogFlowFunc(("returns %Rrc\n", rc));
679	return rc;
680	}
681
682	/** @copydoc VDIMAGEBACKEND::pfnOpen */
683	static DECLCALLBACK(int) rawOpen(const char *pszFilename, unsigned uOpenFlags,
684	PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
685	VDTYPE enmType, void **ppBackendData)
686	{
687	LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x pVDIfsDisk=%#p pVDIfsImage=%#p enmType=%u ppBackendData=%#p\n",
688	pszFilename, uOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData));
689	int rc;
690	PRAWIMAGE pImage;
691
692	/* Check open flags. All valid flags are supported. */
693	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
694	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
695	AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
696
697	pImage = (PRAWIMAGE)RTMemAllocZ(RT_UOFFSETOF(RAWIMAGE, RegionList.aRegions[1]));
698	if (RT_LIKELY(pImage))
699	{
700	pImage->pszFilename = pszFilename;
701	pImage->pStorage = NULL;
702	pImage->pVDIfsDisk = pVDIfsDisk;
703	pImage->pVDIfsImage = pVDIfsImage;
704
705	if (enmType == VDTYPE_OPTICAL_DISC)
706	pImage->cbSector = 2048;
707	else
708	pImage->cbSector = 512;
709
710	rc = rawOpenImage(pImage, uOpenFlags);
711	if (RT_SUCCESS(rc))
712	*ppBackendData = pImage;
713	else
714	RTMemFree(pImage);
715	}
716	else
717	rc = VERR_NO_MEMORY;
718
719	LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
720	return rc;
721	}
722
723	/** @copydoc VDIMAGEBACKEND::pfnCreate */
724	static DECLCALLBACK(int) rawCreate(const char *pszFilename, uint64_t cbSize,
725	unsigned uImageFlags, const char *pszComment,
726	PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
727	PCRTUUID pUuid, unsigned uOpenFlags,
728	unsigned uPercentStart, unsigned uPercentSpan,
729	PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
730	PVDINTERFACE pVDIfsOperation, VDTYPE enmType,
731	void **ppBackendData)
732	{
733	RT_NOREF1(pUuid);
734	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",
735	pszFilename, cbSize, uImageFlags, pszComment, pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags, uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation, enmType, ppBackendData));
736
737	/* Check the VD container type. Yes, hard disk must be allowed, otherwise
738	* various tools using this backend for hard disk images will fail. */
739	if (enmType != VDTYPE_HDD && enmType != VDTYPE_OPTICAL_DISC && enmType != VDTYPE_FLOPPY)
740	return VERR_VD_INVALID_TYPE;
741
742	int rc = VINF_SUCCESS;
743	PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation);
744
745	/* Check arguments. */
746	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
747	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
748	AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
749	AssertPtrReturn(pPCHSGeometry, VERR_INVALID_POINTER);
750	AssertPtrReturn(pLCHSGeometry, VERR_INVALID_POINTER);
751
752	PRAWIMAGE pImage = (PRAWIMAGE)RTMemAllocZ(RT_UOFFSETOF(RAWIMAGE, RegionList.aRegions[1]));
753	if (RT_LIKELY(pImage))
754	{
755	pImage->pszFilename = pszFilename;
756	pImage->pStorage = NULL;
757	pImage->pVDIfsDisk = pVDIfsDisk;
758	pImage->pVDIfsImage = pVDIfsImage;
759
760	rc = rawCreateImage(pImage, cbSize, uImageFlags, pszComment,
761	pPCHSGeometry, pLCHSGeometry, uOpenFlags,
762	pIfProgress, uPercentStart, uPercentSpan);
763	if (RT_SUCCESS(rc))
764	{
765	/* So far the image is opened in read/write mode. Make sure the
766	* image is opened in read-only mode if the caller requested that. */
767	if (uOpenFlags & VD_OPEN_FLAGS_READONLY)
768	{
769	rawFreeImage(pImage, false);
770	rc = rawOpenImage(pImage, uOpenFlags);
771	}
772
773	if (RT_SUCCESS(rc))
774	*ppBackendData = pImage;
775	}
776
777	if (RT_FAILURE(rc))
778	RTMemFree(pImage);
779	}
780	else
781	rc = VERR_NO_MEMORY;
782
783	LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
784	return rc;
785	}
786
787	/** @copydoc VDIMAGEBACKEND::pfnRename */
788	static DECLCALLBACK(int) rawRename(void pBackendData, const char pszFilename)
789	{
790	LogFlowFunc(("pBackendData=%#p pszFilename=%#p\n", pBackendData, pszFilename));
791	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
792
793	AssertReturn((pImage && pszFilename && *pszFilename), VERR_INVALID_PARAMETER);
794
795	/* Close the image. */
796	int rc = rawFreeImage(pImage, false);
797	if (RT_SUCCESS(rc))
798	{
799	/* Rename the file. */
800	rc = vdIfIoIntFileMove(pImage->pIfIo, pImage->pszFilename, pszFilename, 0);
801	if (RT_SUCCESS(rc))
802	{
803	/* Update pImage with the new information. */
804	pImage->pszFilename = pszFilename;
805
806	/* Open the old image with new name. */
807	rc = rawOpenImage(pImage, pImage->uOpenFlags);
808	}
809	else
810	{
811	/* The move failed, try to reopen the original image. */
812	int rc2 = rawOpenImage(pImage, pImage->uOpenFlags);
813	if (RT_FAILURE(rc2))
814	rc = rc2;
815	}
816	}
817
818	LogFlowFunc(("returns %Rrc\n", rc));
819	return rc;
820	}
821
822	/** @copydoc VDIMAGEBACKEND::pfnClose */
823	static DECLCALLBACK(int) rawClose(void *pBackendData, bool fDelete)
824	{
825	LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete));
826	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
827	int rc = rawFreeImage(pImage, fDelete);
828	RTMemFree(pImage);
829
830	LogFlowFunc(("returns %Rrc\n", rc));
831	return rc;
832	}
833
834	/** @copydoc VDIMAGEBACKEND::pfnRead */
835	static DECLCALLBACK(int) rawRead(void *pBackendData, uint64_t uOffset, size_t cbToRead,
836	PVDIOCTX pIoCtx, size_t *pcbActuallyRead)
837	{
838	int rc = VINF_SUCCESS;
839	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
840
841	/* For sequential access do not allow to go back. */
842	if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
843	&& uOffset < pImage->offAccess)
844	{
845	*pcbActuallyRead = 0;
846	return VERR_INVALID_PARAMETER;
847	}
848
849	rc = vdIfIoIntFileReadUser(pImage->pIfIo, pImage->pStorage, uOffset,
850	pIoCtx, cbToRead);
851	if (RT_SUCCESS(rc))
852	{
853	*pcbActuallyRead = cbToRead;
854	pImage->offAccess = uOffset + cbToRead;
855	}
856
857	return rc;
858	}
859
860	/** @copydoc VDIMAGEBACKEND::pfnWrite */
861	static DECLCALLBACK(int) rawWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite,
862	PVDIOCTX pIoCtx, size_t pcbWriteProcess, size_t pcbPreRead,
863	size_t *pcbPostRead, unsigned fWrite)
864	{
865	RT_NOREF1(fWrite);
866	int rc = VINF_SUCCESS;
867	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
868
869	/* For sequential access do not allow to go back. */
870	if ( pImage->uOpenFlags & VD_OPEN_FLAGS_SEQUENTIAL
871	&& uOffset < pImage->offAccess)
872	{
873	*pcbWriteProcess = 0;
874	*pcbPostRead = 0;
875	*pcbPreRead = 0;
876	return VERR_INVALID_PARAMETER;
877	}
878
879	rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage, uOffset,
880	pIoCtx, cbToWrite, NULL, NULL);
881	if (RT_SUCCESS(rc))
882	{
883	*pcbWriteProcess = cbToWrite;
884	*pcbPostRead = 0;
885	*pcbPreRead = 0;
886	pImage->offAccess = uOffset + cbToWrite;
887	}
888
889	return rc;
890	}
891
892	/** @copydoc VDIMAGEBACKEND::pfnFlush */
893	static DECLCALLBACK(int) rawFlush(void *pBackendData, PVDIOCTX pIoCtx)
894	{
895	int rc = VINF_SUCCESS;
896	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
897
898	if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
899	rc = vdIfIoIntFileFlush(pImage->pIfIo, pImage->pStorage, pIoCtx,
900	NULL, NULL);
901
902	return rc;
903	}
904
905	/** @copydoc VDIMAGEBACKEND::pfnGetVersion */
906	static DECLCALLBACK(unsigned) rawGetVersion(void *pBackendData)
907	{
908	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
909	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
910
911	AssertPtrReturn(pImage, 0);
912
913	return 1;
914	}
915
916	/** @copydoc VDIMAGEBACKEND::pfnGetFileSize */
917	static DECLCALLBACK(uint64_t) rawGetFileSize(void *pBackendData)
918	{
919	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
920	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
921
922	AssertPtrReturn(pImage, 0);
923
924	uint64_t cbFile = 0;
925	if (pImage->pStorage)
926	{
927	int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
928	if (RT_FAILURE(rc))
929	cbFile = 0; /* Make sure it is 0 */
930	}
931
932	LogFlowFunc(("returns %lld\n", cbFile));
933	return cbFile;
934	}
935
936	/** @copydoc VDIMAGEBACKEND::pfnGetPCHSGeometry */
937	static DECLCALLBACK(int) rawGetPCHSGeometry(void *pBackendData,
938	PVDGEOMETRY pPCHSGeometry)
939	{
940	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry));
941	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
942	int rc = VINF_SUCCESS;
943
944	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
945
946	if (pImage->PCHSGeometry.cCylinders)
947	*pPCHSGeometry = pImage->PCHSGeometry;
948	else
949	rc = VERR_VD_GEOMETRY_NOT_SET;
950
951	LogFlowFunc(("returns %Rrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
952	return rc;
953	}
954
955	/** @copydoc VDIMAGEBACKEND::pfnSetPCHSGeometry */
956	static DECLCALLBACK(int) rawSetPCHSGeometry(void *pBackendData,
957	PCVDGEOMETRY pPCHSGeometry)
958	{
959	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n",
960	pBackendData, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
961	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
962	int rc = VINF_SUCCESS;
963
964	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
965
966	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
967	rc = VERR_VD_IMAGE_READ_ONLY;
968	else
969	pImage->PCHSGeometry = *pPCHSGeometry;
970
971	LogFlowFunc(("returns %Rrc\n", rc));
972	return rc;
973	}
974
975	/** @copydoc VDIMAGEBACKEND::pfnGetLCHSGeometry */
976	static DECLCALLBACK(int) rawGetLCHSGeometry(void *pBackendData,
977	PVDGEOMETRY pLCHSGeometry)
978	{
979	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry));
980	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
981	int rc = VINF_SUCCESS;
982
983	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
984
985	if (pImage->LCHSGeometry.cCylinders)
986	*pLCHSGeometry = pImage->LCHSGeometry;
987	else
988	rc = VERR_VD_GEOMETRY_NOT_SET;
989
990	LogFlowFunc(("returns %Rrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
991	return rc;
992	}
993
994	/** @copydoc VDIMAGEBACKEND::pfnSetLCHSGeometry */
995	static DECLCALLBACK(int) rawSetLCHSGeometry(void *pBackendData,
996	PCVDGEOMETRY pLCHSGeometry)
997	{
998	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n",
999	pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
1000	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1001	int rc = VINF_SUCCESS;
1002
1003	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
1004
1005	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1006	rc = VERR_VD_IMAGE_READ_ONLY;
1007	else
1008	pImage->LCHSGeometry = *pLCHSGeometry;
1009
1010	LogFlowFunc(("returns %Rrc\n", rc));
1011	return rc;
1012	}
1013
1014	/** @copydoc VDIMAGEBACKEND::pfnQueryRegions */
1015	static DECLCALLBACK(int) rawQueryRegions(void pBackendData, PCVDREGIONLIST ppRegionList)
1016	{
1017	LogFlowFunc(("pBackendData=%#p ppRegionList=%#p\n", pBackendData, ppRegionList));
1018	PRAWIMAGE pThis = (PRAWIMAGE)pBackendData;
1019
1020	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
1021
1022	*ppRegionList = &pThis->RegionList;
1023	LogFlowFunc(("returns %Rrc\n", VINF_SUCCESS));
1024	return VINF_SUCCESS;
1025	}
1026
1027	/** @copydoc VDIMAGEBACKEND::pfnRegionListRelease */
1028	static DECLCALLBACK(void) rawRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList)
1029	{
1030	RT_NOREF1(pRegionList);
1031	LogFlowFunc(("pBackendData=%#p pRegionList=%#p\n", pBackendData, pRegionList));
1032	PRAWIMAGE pThis = (PRAWIMAGE)pBackendData;
1033	AssertPtr(pThis); RT_NOREF(pThis);
1034
1035	/* Nothing to do here. */
1036	}
1037
1038	/** @copydoc VDIMAGEBACKEND::pfnGetImageFlags */
1039	static DECLCALLBACK(unsigned) rawGetImageFlags(void *pBackendData)
1040	{
1041	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1042	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1043
1044	AssertPtrReturn(pImage, 0);
1045
1046	LogFlowFunc(("returns %#x\n", pImage->uImageFlags));
1047	return pImage->uImageFlags;
1048	}
1049
1050	/** @copydoc VDIMAGEBACKEND::pfnGetOpenFlags */
1051	static DECLCALLBACK(unsigned) rawGetOpenFlags(void *pBackendData)
1052	{
1053	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1054	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1055
1056	AssertPtrReturn(pImage, 0);
1057
1058	LogFlowFunc(("returns %#x\n", pImage->uOpenFlags));
1059	return pImage->uOpenFlags;
1060	}
1061
1062	/** @copydoc VDIMAGEBACKEND::pfnSetOpenFlags */
1063	static DECLCALLBACK(int) rawSetOpenFlags(void *pBackendData, unsigned uOpenFlags)
1064	{
1065	LogFlowFunc(("pBackendData=%#p\n uOpenFlags=%#x", pBackendData, uOpenFlags));
1066	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1067	int rc = VINF_SUCCESS;
1068
1069	/* Image must be opened and the new flags must be valid. */
1070	if (!pImage \|\| (uOpenFlags & ~( VD_OPEN_FLAGS_READONLY \| VD_OPEN_FLAGS_INFO
1071	\| VD_OPEN_FLAGS_ASYNC_IO \| VD_OPEN_FLAGS_SHAREABLE
1072	\| VD_OPEN_FLAGS_SEQUENTIAL \| VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS)))
1073	rc = VERR_INVALID_PARAMETER;
1074	else
1075	{
1076	/* Implement this operation via reopening the image. */
1077	rc = rawFreeImage(pImage, false);
1078	if (RT_SUCCESS(rc))
1079	rc = rawOpenImage(pImage, uOpenFlags);
1080	}
1081
1082	LogFlowFunc(("returns %Rrc\n", rc));
1083	return rc;
1084	}
1085
1086	/** @copydoc VDIMAGEBACKEND::pfnGetComment */
1087	VD_BACKEND_CALLBACK_GET_COMMENT_DEF_NOT_SUPPORTED(rawGetComment);
1088
1089	/** @copydoc VDIMAGEBACKEND::pfnSetComment */
1090	VD_BACKEND_CALLBACK_SET_COMMENT_DEF_NOT_SUPPORTED(rawSetComment, PRAWIMAGE);
1091
1092	/** @copydoc VDIMAGEBACKEND::pfnGetUuid */
1093	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetUuid);
1094
1095	/** @copydoc VDIMAGEBACKEND::pfnSetUuid */
1096	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetUuid, PRAWIMAGE);
1097
1098	/** @copydoc VDIMAGEBACKEND::pfnGetModificationUuid */
1099	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetModificationUuid);
1100
1101	/** @copydoc VDIMAGEBACKEND::pfnSetModificationUuid */
1102	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetModificationUuid, PRAWIMAGE);
1103
1104	/** @copydoc VDIMAGEBACKEND::pfnGetParentUuid */
1105	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetParentUuid);
1106
1107	/** @copydoc VDIMAGEBACKEND::pfnSetParentUuid */
1108	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetParentUuid, PRAWIMAGE);
1109
1110	/** @copydoc VDIMAGEBACKEND::pfnGetParentModificationUuid */
1111	VD_BACKEND_CALLBACK_GET_UUID_DEF_NOT_SUPPORTED(rawGetParentModificationUuid);
1112
1113	/** @copydoc VDIMAGEBACKEND::pfnSetParentModificationUuid */
1114	VD_BACKEND_CALLBACK_SET_UUID_DEF_NOT_SUPPORTED(rawSetParentModificationUuid, PRAWIMAGE);
1115
1116	/** @copydoc VDIMAGEBACKEND::pfnDump */
1117	static DECLCALLBACK(void) rawDump(void *pBackendData)
1118	{
1119	PRAWIMAGE pImage = (PRAWIMAGE)pBackendData;
1120
1121	AssertPtrReturnVoid(pImage);
1122	vdIfErrorMessage(pImage->pIfError, "Header: Geometry PCHS=%u/%u/%u LCHS=%u/%u/%u cbSector=%llu\n",
1123	pImage->PCHSGeometry.cCylinders, pImage->PCHSGeometry.cHeads, pImage->PCHSGeometry.cSectors,
1124	pImage->LCHSGeometry.cCylinders, pImage->LCHSGeometry.cHeads, pImage->LCHSGeometry.cSectors,
1125	pImage->cbSize / 512);
1126	}
1127
1128
1129
1130	const VDIMAGEBACKEND g_RawBackend =
1131	{
1132	/* u32Version */
1133	VD_IMGBACKEND_VERSION,
1134	/* pszBackendName */
1135	"RAW",
1136	/* uBackendCaps */
1137	VD_CAP_CREATE_FIXED \| VD_CAP_FILE \| VD_CAP_ASYNC \| VD_CAP_VFS,
1138	/* paFileExtensions */
1139	s_aRawFileExtensions,
1140	/* paConfigInfo */
1141	NULL,
1142	/* pfnProbe */
1143	rawProbe,
1144	/* pfnOpen */
1145	rawOpen,
1146	/* pfnCreate */
1147	rawCreate,
1148	/* pfnRename */
1149	rawRename,
1150	/* pfnClose */
1151	rawClose,
1152	/* pfnRead */
1153	rawRead,
1154	/* pfnWrite */
1155	rawWrite,
1156	/* pfnFlush */
1157	rawFlush,
1158	/* pfnDiscard */
1159	NULL,
1160	/* pfnGetVersion */
1161	rawGetVersion,
1162	/* pfnGetFileSize */
1163	rawGetFileSize,
1164	/* pfnGetPCHSGeometry */
1165	rawGetPCHSGeometry,
1166	/* pfnSetPCHSGeometry */
1167	rawSetPCHSGeometry,
1168	/* pfnGetLCHSGeometry */
1169	rawGetLCHSGeometry,
1170	/* pfnSetLCHSGeometry */
1171	rawSetLCHSGeometry,
1172	/* pfnQueryRegions */
1173	rawQueryRegions,
1174	/* pfnRegionListRelease */
1175	rawRegionListRelease,
1176	/* pfnGetImageFlags */
1177	rawGetImageFlags,
1178	/* pfnGetOpenFlags */
1179	rawGetOpenFlags,
1180	/* pfnSetOpenFlags */
1181	rawSetOpenFlags,
1182	/* pfnGetComment */
1183	rawGetComment,
1184	/* pfnSetComment */
1185	rawSetComment,
1186	/* pfnGetUuid */
1187	rawGetUuid,
1188	/* pfnSetUuid */
1189	rawSetUuid,
1190	/* pfnGetModificationUuid */
1191	rawGetModificationUuid,
1192	/* pfnSetModificationUuid */
1193	rawSetModificationUuid,
1194	/* pfnGetParentUuid */
1195	rawGetParentUuid,
1196	/* pfnSetParentUuid */
1197	rawSetParentUuid,
1198	/* pfnGetParentModificationUuid */
1199	rawGetParentModificationUuid,
1200	/* pfnSetParentModificationUuid */
1201	rawSetParentModificationUuid,
1202	/* pfnDump */
1203	rawDump,
1204	/* pfnGetTimestamp */
1205	NULL,
1206	/* pfnGetParentTimestamp */
1207	NULL,
1208	/* pfnSetParentTimestamp */
1209	NULL,
1210	/* pfnGetParentFilename */
1211	NULL,
1212	/* pfnSetParentFilename */
1213	NULL,
1214	/* pfnComposeLocation */
1215	genericFileComposeLocation,
1216	/* pfnComposeName */
1217	genericFileComposeName,
1218	/* pfnCompact */
1219	NULL,
1220	/* pfnResize */
1221	NULL,
1222	/* pfnRepair */
1223	NULL,
1224	/* pfnTraverseMetadata */
1225	NULL,
1226	/* u32VersionEnd */
1227	VD_IMGBACKEND_VERSION
1228	};

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source: vbox/trunk/src/VBox/Storage/RAW.cpp@ 103251

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