Parallels.cpp@ 93231

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1	/* $Id: Parallels.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	*
4	* Parallels hdd disk image, core code.
5	*/
6
7	/*
8	* Copyright (C) 2006-2022 Oracle Corporation
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*/
18
19	#define LOG_GROUP LOG_GROUP_VD_PARALLELS
20	#include <VBox/vd-plugin.h>
21	#include <VBox/err.h>
22
23	#include <VBox/log.h>
24	#include <iprt/assert.h>
25	#include <iprt/mem.h>
26	#include <iprt/uuid.h>
27	#include <iprt/path.h>
28	#include <iprt/string.h>
29	#include <iprt/asm.h>
30
31	#include "VDBackends.h"
32
33	#define PARALLELS_HEADER_MAGIC "WithoutFreeSpace"
34	#define PARALLELS_DISK_VERSION 2
35
36	/** The header of the parallels disk. */
37	#pragma pack(1)
38	typedef struct ParallelsHeader
39	{
40	/** The magic header to identify a parallels hdd image. */
41	char HeaderIdentifier[16];
42	/** The version of the disk image. */
43	uint32_t uVersion;
44	/** The number of heads the hdd has. */
45	uint32_t cHeads;
46	/** Number of cylinders. */
47	uint32_t cCylinders;
48	/** Number of sectors per track. */
49	uint32_t cSectorsPerTrack;
50	/** Number of entries in the allocation bitmap. */
51	uint32_t cEntriesInAllocationBitmap;
52	/** Total number of sectors. */
53	uint32_t cSectors;
54	/** Padding. */
55	char Padding[24];
56	} ParallelsHeader;
57	#pragma pack()
58
59	/**
60	* Parallels image structure.
61	*/
62	typedef struct PARALLELSIMAGE
63	{
64	/** Image file name. */
65	const char *pszFilename;
66	/** Opaque storage handle. */
67	PVDIOSTORAGE pStorage;
68
69	/** Pointer to the per-disk VD interface list. */
70	PVDINTERFACE pVDIfsDisk;
71	/** Pointer to the per-image VD interface list. */
72	PVDINTERFACE pVDIfsImage;
73	/** Error interface. */
74	PVDINTERFACEERROR pIfError;
75	/** I/O interface. */
76	PVDINTERFACEIOINT pIfIo;
77
78	/** Open flags passed by VBoxHDD layer. */
79	unsigned uOpenFlags;
80	/** Image flags defined during creation or determined during open. */
81	unsigned uImageFlags;
82	/** Total size of the image. */
83	uint64_t cbSize;
84
85	/** Physical geometry of this image. */
86	VDGEOMETRY PCHSGeometry;
87	/** Logical geometry of this image. */
88	VDGEOMETRY LCHSGeometry;
89
90	/** Pointer to the allocation bitmap. */
91	uint32_t *pAllocationBitmap;
92	/** Entries in the allocation bitmap. */
93	uint64_t cAllocationBitmapEntries;
94	/** Flag whether the allocation bitmap was changed. */
95	bool fAllocationBitmapChanged;
96	/** Current file size. */
97	uint64_t cbFileCurrent;
98	/** The static region list. */
99	VDREGIONLIST RegionList;
100	} PARALLELSIMAGE, *PPARALLELSIMAGE;
101
102
103	/*********************************************************************************************************************************
104	* Static Variables *
105	*********************************************************************************************************************************/
106
107	/** NULL-terminated array of supported file extensions. */
108	static const VDFILEEXTENSION s_aParallelsFileExtensions[] =
109	{
110	{"hdd", VDTYPE_HDD},
111	{NULL, VDTYPE_INVALID}
112	};
113
114	/***************************************************
115	* Internal functions *
116	**************************************************/
117
118	/**
119	* Internal. Flush image data to disk.
120	*/
121	static int parallelsFlushImage(PPARALLELSIMAGE pImage)
122	{
123	int rc = VINF_SUCCESS;
124
125	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
126	return VINF_SUCCESS;
127
128	if ( !(pImage->uImageFlags & VD_IMAGE_FLAGS_FIXED)
129	&& (pImage->fAllocationBitmapChanged))
130	{
131	pImage->fAllocationBitmapChanged = false;
132	/* Write the allocation bitmap to the file. */
133	rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
134	sizeof(ParallelsHeader), pImage->pAllocationBitmap,
135	pImage->cAllocationBitmapEntries * sizeof(uint32_t));
136	if (RT_FAILURE(rc))
137	return rc;
138	}
139
140	/* Flush file. */
141	rc = vdIfIoIntFileFlushSync(pImage->pIfIo, pImage->pStorage);
142
143	LogFlowFunc(("returns %Rrc\n", rc));
144	return rc;
145	}
146
147	/**
148	* Internal. Free all allocated space for representing an image except pImage,
149	* and optionally delete the image from disk.
150	*/
151	static int parallelsFreeImage(PPARALLELSIMAGE pImage, bool fDelete)
152	{
153	int rc = VINF_SUCCESS;
154
155	/* Freeing a never allocated image (e.g. because the open failed) is
156	* not signalled as an error. After all nothing bad happens. */
157	if (pImage)
158	{
159	if (pImage->pStorage)
160	{
161	/* No point updating the file that is deleted anyway. */
162	if (!fDelete)
163	parallelsFlushImage(pImage);
164
165	rc = vdIfIoIntFileClose(pImage->pIfIo, pImage->pStorage);
166	pImage->pStorage = NULL;
167	}
168
169	if (pImage->pAllocationBitmap)
170	{
171	RTMemFree(pImage->pAllocationBitmap);
172	pImage->pAllocationBitmap = NULL;
173	}
174
175	if (fDelete && pImage->pszFilename)
176	vdIfIoIntFileDelete(pImage->pIfIo, pImage->pszFilename);
177	}
178
179	return rc;
180	}
181
182	static int parallelsOpenImage(PPARALLELSIMAGE pImage, unsigned uOpenFlags)
183	{
184	pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
185	pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
186	pImage->uOpenFlags = uOpenFlags;
187	AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
188
189	int rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
190	VDOpenFlagsToFileOpenFlags(uOpenFlags,
191	false /* fCreate */),
192	&pImage->pStorage);
193	if (RT_SUCCESS(rc))
194	{
195	rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &pImage->cbFileCurrent);
196	if (RT_SUCCESS(rc)
197	&& !(pImage->cbFileCurrent % 512))
198	{
199	ParallelsHeader parallelsHeader;
200
201	rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, 0,
202	&parallelsHeader, sizeof(parallelsHeader));
203	if (RT_SUCCESS(rc))
204	{
205	if (memcmp(parallelsHeader.HeaderIdentifier, PARALLELS_HEADER_MAGIC, 16))
206	{
207	/* Check if the file has hdd as extension. It is a fixed size raw image then. */
208	char *pszSuffix = RTPathSuffix(pImage->pszFilename);
209	if (!strcmp(pszSuffix, ".hdd"))
210	{
211	/* This is a fixed size image. */
212	pImage->uImageFlags \|= VD_IMAGE_FLAGS_FIXED;
213	pImage->cbSize = pImage->cbFileCurrent;
214
215	pImage->PCHSGeometry.cHeads = 16;
216	pImage->PCHSGeometry.cSectors = 63;
217	uint64_t cCylinders = pImage->cbSize / (512 * pImage->PCHSGeometry.cSectors * pImage->PCHSGeometry.cHeads);
218	pImage->PCHSGeometry.cCylinders = (uint32_t)cCylinders;
219	}
220	else
221	rc = VERR_VD_PARALLELS_INVALID_HEADER;
222	}
223	else
224	{
225	if ( parallelsHeader.uVersion == PARALLELS_DISK_VERSION
226	&& parallelsHeader.cEntriesInAllocationBitmap <= (1 << 30))
227	{
228	Log(("cSectors=%u\n", parallelsHeader.cSectors));
229	pImage->cbSize = ((uint64_t)parallelsHeader.cSectors) * 512;
230	pImage->uImageFlags = VD_IMAGE_FLAGS_NONE;
231	pImage->PCHSGeometry.cCylinders = parallelsHeader.cCylinders;
232	pImage->PCHSGeometry.cHeads = parallelsHeader.cHeads;
233	pImage->PCHSGeometry.cSectors = parallelsHeader.cSectorsPerTrack;
234	pImage->cAllocationBitmapEntries = parallelsHeader.cEntriesInAllocationBitmap;
235	pImage->pAllocationBitmap = (uint32_t )RTMemAllocZ((uint32_t)pImage->cAllocationBitmapEntries sizeof(uint32_t));
236	if (RT_LIKELY(pImage->pAllocationBitmap))
237	rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage,
238	sizeof(ParallelsHeader), pImage->pAllocationBitmap,
239	pImage->cAllocationBitmapEntries * sizeof(uint32_t));
240	else
241	rc = VERR_NO_MEMORY;
242	}
243	else
244	rc = VERR_NOT_SUPPORTED;
245	}
246	}
247	}
248	else if (RT_SUCCESS(rc))
249	rc = VERR_VD_PARALLELS_INVALID_HEADER;
250	}
251
252	if (RT_SUCCESS(rc))
253	{
254	PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
255	pImage->RegionList.fFlags = 0;
256	pImage->RegionList.cRegions = 1;
257
258	pRegion->offRegion = 0; /* Disk start. */
259	pRegion->cbBlock = 512;
260	pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
261	pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
262	pRegion->cbData = 512;
263	pRegion->cbMetadata = 0;
264	pRegion->cRegionBlocksOrBytes = pImage->cbSize;
265	}
266	else
267	parallelsFreeImage(pImage, false);
268
269	LogFlowFunc(("returns %Rrc\n", rc));
270	return rc;
271	}
272
273	/**
274	* Internal: Create a parallels image.
275	*/
276	static int parallelsCreateImage(PPARALLELSIMAGE pImage, uint64_t cbSize,
277	unsigned uImageFlags, const char *pszComment,
278	PCVDGEOMETRY pPCHSGeometry,
279	PCVDGEOMETRY pLCHSGeometry, unsigned uOpenFlags,
280	PFNVDPROGRESS pfnProgress, void *pvUser,
281	unsigned uPercentStart, unsigned uPercentSpan)
282	{
283	RT_NOREF1(pszComment);
284	int rc = VINF_SUCCESS;
285	int32_t fOpen;
286
287	if (!(uImageFlags & VD_IMAGE_FLAGS_FIXED))
288	{
289	pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
290	pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
291	AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
292
293	pImage->uOpenFlags = uOpenFlags & ~VD_OPEN_FLAGS_READONLY;
294	pImage->uImageFlags = uImageFlags;
295	pImage->PCHSGeometry = *pPCHSGeometry;
296	pImage->LCHSGeometry = *pLCHSGeometry;
297	if (!pImage->PCHSGeometry.cCylinders)
298	{
299	/* Set defaults. */
300	pImage->PCHSGeometry.cSectors = 63;
301	pImage->PCHSGeometry.cHeads = 16;
302	pImage->PCHSGeometry.cCylinders = pImage->cbSize / (512 * pImage->PCHSGeometry.cSectors * pImage->PCHSGeometry.cHeads);
303	}
304
305	/* Create image file. */
306	fOpen = VDOpenFlagsToFileOpenFlags(pImage->uOpenFlags, true /* fCreate */);
307	rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename, fOpen, &pImage->pStorage);
308	if (RT_SUCCESS(rc))
309	{
310	if (pfnProgress)
311	pfnProgress(pvUser, uPercentStart + uPercentSpan * 98 / 100);
312
313	/* Setup image state. */
314	pImage->cbSize = cbSize;
315	pImage->cAllocationBitmapEntries = cbSize / 512 / pImage->PCHSGeometry.cSectors;
316	if (pImage->cAllocationBitmapEntries * pImage->PCHSGeometry.cSectors * 512 < cbSize)
317	pImage->cAllocationBitmapEntries++;
318	pImage->fAllocationBitmapChanged = true;
319	pImage->cbFileCurrent = sizeof(ParallelsHeader) + pImage->cAllocationBitmapEntries * sizeof(uint32_t);
320	/* Round to next sector boundary. */
321	pImage->cbFileCurrent += 512 - pImage->cbFileCurrent % 512;
322	Assert(!(pImage->cbFileCurrent % 512));
323	pImage->pAllocationBitmap = (uint32_t )RTMemAllocZ(pImage->cAllocationBitmapEntries sizeof(uint32_t));
324	if (pImage->pAllocationBitmap)
325	{
326	ParallelsHeader Header;
327
328	memcpy(Header.HeaderIdentifier, PARALLELS_HEADER_MAGIC, sizeof(Header.HeaderIdentifier));
329	Header.uVersion = RT_H2LE_U32(PARALLELS_DISK_VERSION);
330	Header.cHeads = RT_H2LE_U32(pImage->PCHSGeometry.cHeads);
331	Header.cCylinders = RT_H2LE_U32(pImage->PCHSGeometry.cCylinders);
332	Header.cSectorsPerTrack = RT_H2LE_U32(pImage->PCHSGeometry.cSectors);
333	Header.cEntriesInAllocationBitmap = RT_H2LE_U32(pImage->cAllocationBitmapEntries);
334	Header.cSectors = RT_H2LE_U32(pImage->cbSize / 512);
335	memset(Header.Padding, 0, sizeof(Header.Padding));
336
337	/* Write header and allocation bitmap. */
338	rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, pImage->cbFileCurrent);
339	if (RT_SUCCESS(rc))
340	rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, 0,
341	&Header, sizeof(Header));
342	if (RT_SUCCESS(rc))
343	rc = parallelsFlushImage(pImage); /* Writes the allocation bitmap. */
344	}
345	else
346	rc = VERR_NO_MEMORY;
347	}
348	else
349	rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("Parallels: cannot create image '%s'"), pImage->pszFilename);
350	}
351	else
352	rc = vdIfError(pImage->pIfError, VERR_VD_INVALID_TYPE, RT_SRC_POS, N_("Parallels: cannot create fixed image '%s'. Create a raw image"), pImage->pszFilename);
353
354	if (RT_SUCCESS(rc) && pfnProgress)
355	pfnProgress(pvUser, uPercentStart + uPercentSpan);
356
357	if (RT_SUCCESS(rc))
358	{
359	PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
360	pImage->RegionList.fFlags = 0;
361	pImage->RegionList.cRegions = 1;
362
363	pRegion->offRegion = 0; /* Disk start. */
364	pRegion->cbBlock = 512;
365	pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
366	pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
367	pRegion->cbData = 512;
368	pRegion->cbMetadata = 0;
369	pRegion->cRegionBlocksOrBytes = pImage->cbSize;
370	}
371	else
372	parallelsFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
373	return rc;
374	}
375
376	/** @copydoc VDIMAGEBACKEND::pfnProbe */
377	static DECLCALLBACK(int) parallelsProbe(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
378	PVDINTERFACE pVDIfsImage, VDTYPE enmDesiredType, VDTYPE *penmType)
379	{
380	RT_NOREF(pVDIfsDisk, enmDesiredType);
381	int rc;
382	PVDIOSTORAGE pStorage;
383	ParallelsHeader parallelsHeader;
384
385	PVDINTERFACEIOINT pIfIo = VDIfIoIntGet(pVDIfsImage);
386	AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER);
387
388	rc = vdIfIoIntFileOpen(pIfIo, pszFilename,
389	VDOpenFlagsToFileOpenFlags(VD_OPEN_FLAGS_READONLY,
390	false /* fCreate */),
391	&pStorage);
392	if (RT_FAILURE(rc))
393	return rc;
394
395	rc = vdIfIoIntFileReadSync(pIfIo, pStorage, 0, &parallelsHeader,
396	sizeof(ParallelsHeader));
397	if (RT_SUCCESS(rc))
398	{
399	if ( !memcmp(parallelsHeader.HeaderIdentifier, PARALLELS_HEADER_MAGIC, 16)
400	&& (parallelsHeader.uVersion == PARALLELS_DISK_VERSION))
401	rc = VINF_SUCCESS;
402	else
403	{
404	/*
405	* The image may be an fixed size image.
406	* Unfortunately fixed sized parallels images
407	* are just raw files hence no magic header to
408	* check for.
409	* The code succeeds if the file is a multiple
410	* of 512 and if the file extensions is *.hdd
411	*/
412	uint64_t cbFile;
413	char *pszSuffix;
414
415	rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile);
416	if (RT_FAILURE(rc) \|\| ((cbFile % 512) != 0))
417	{
418	vdIfIoIntFileClose(pIfIo, pStorage);
419	return VERR_VD_PARALLELS_INVALID_HEADER;
420	}
421
422	pszSuffix = RTPathSuffix(pszFilename);
423	if (!pszSuffix \|\| strcmp(pszSuffix, ".hdd"))
424	rc = VERR_VD_PARALLELS_INVALID_HEADER;
425	else
426	rc = VINF_SUCCESS;
427	}
428	}
429
430	if (RT_SUCCESS(rc))
431	*penmType = VDTYPE_HDD;
432
433	vdIfIoIntFileClose(pIfIo, pStorage);
434	return rc;
435	}
436
437	/** @copydoc VDIMAGEBACKEND::pfnOpen */
438	static DECLCALLBACK(int) parallelsOpen(const char *pszFilename, unsigned uOpenFlags,
439	PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
440	VDTYPE enmType, void **ppBackendData)
441	{
442	LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x pVDIfsDisk=%#p pVDIfsImage=%#p enmType=%u ppBackendData=%#p\n", pszFilename, uOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData));
443	int rc;
444	PPARALLELSIMAGE pImage;
445
446	NOREF(enmType); /*< @todo r=klaus make use of the type info. /
447
448	/* Check parameters. */
449	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
450	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
451	AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
452
453
454	pImage = (PPARALLELSIMAGE)RTMemAllocZ(RT_UOFFSETOF(PARALLELSIMAGE, RegionList.aRegions[1]));
455	if (RT_LIKELY(pImage))
456	{
457	pImage->pszFilename = pszFilename;
458	pImage->pStorage = NULL;
459	pImage->pVDIfsDisk = pVDIfsDisk;
460	pImage->pVDIfsImage = pVDIfsImage;
461	pImage->fAllocationBitmapChanged = false;
462
463	rc = parallelsOpenImage(pImage, uOpenFlags);
464	if (RT_SUCCESS(rc))
465	*ppBackendData = pImage;
466	else
467	RTMemFree(pImage);
468	}
469	else
470	rc = VERR_NO_MEMORY;
471
472	LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
473	return rc;
474	}
475
476	/** @copydoc VDIMAGEBACKEND::pfnCreate */
477	static DECLCALLBACK(int) parallelsCreate(const char *pszFilename, uint64_t cbSize,
478	unsigned uImageFlags, const char *pszComment,
479	PCVDGEOMETRY pPCHSGeometry,
480	PCVDGEOMETRY pLCHSGeometry, PCRTUUID pUuid,
481	unsigned uOpenFlags, unsigned uPercentStart,
482	unsigned uPercentSpan, PVDINTERFACE pVDIfsDisk,
483	PVDINTERFACE pVDIfsImage,
484	PVDINTERFACE pVDIfsOperation, VDTYPE enmType,
485	void **ppBackendData)
486	{
487	RT_NOREF1(pUuid);
488	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",
489	pszFilename, cbSize, uImageFlags, pszComment, pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags, uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation, enmType, ppBackendData));
490
491	/* Check the VD container type. */
492	if (enmType != VDTYPE_HDD)
493	return VERR_VD_INVALID_TYPE;
494
495	/* Check arguments. */
496	AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
497	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
498	AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
499	AssertPtrReturn(pPCHSGeometry, VERR_INVALID_POINTER);
500	AssertPtrReturn(pLCHSGeometry, VERR_INVALID_POINTER);
501
502	int rc = VINF_SUCCESS;
503	PPARALLELSIMAGE pImage;
504	PFNVDPROGRESS pfnProgress = NULL;
505	void *pvUser = NULL;
506	PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation);
507	if (pIfProgress)
508	{
509	pfnProgress = pIfProgress->pfnProgress;
510	pvUser = pIfProgress->Core.pvUser;
511	}
512
513	pImage = (PPARALLELSIMAGE)RTMemAllocZ(RT_UOFFSETOF(PARALLELSIMAGE, RegionList.aRegions[1]));
514	if (RT_LIKELY(pImage))
515	{
516	pImage->pszFilename = pszFilename;
517	pImage->pStorage = NULL;
518	pImage->pVDIfsDisk = pVDIfsDisk;
519	pImage->pVDIfsImage = pVDIfsImage;
520
521	rc = parallelsCreateImage(pImage, cbSize, uImageFlags, pszComment,
522	pPCHSGeometry, pLCHSGeometry, uOpenFlags,
523	pfnProgress, pvUser, uPercentStart, uPercentSpan);
524	if (RT_SUCCESS(rc))
525	{
526	/* So far the image is opened in read/write mode. Make sure the
527	* image is opened in read-only mode if the caller requested that. */
528	if (uOpenFlags & VD_OPEN_FLAGS_READONLY)
529	{
530	parallelsFreeImage(pImage, false);
531	rc = parallelsOpenImage(pImage, uOpenFlags);
532	}
533
534	if (RT_SUCCESS(rc))
535	*ppBackendData = pImage;
536	}
537
538	if (RT_FAILURE(rc))
539	RTMemFree(pImage);
540	}
541	else
542	rc = VERR_NO_MEMORY;
543
544	LogFlowFunc(("returns %Rrc\n", rc));
545	return rc;
546	}
547
548	/** @copydoc VDIMAGEBACKEND::pfnRename */
549	static DECLCALLBACK(int) parallelsRename(void pBackendData, const char pszFilename)
550	{
551	LogFlowFunc(("pBackendData=%#p pszFilename=%#p\n", pBackendData, pszFilename));
552	int rc = VINF_SUCCESS;
553	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
554
555	/* Check arguments. */
556	AssertReturn((pImage && pszFilename && *pszFilename), VERR_INVALID_PARAMETER);
557
558	/* Close the image. */
559	rc = parallelsFreeImage(pImage, false);
560	if (RT_SUCCESS(rc))
561	{
562	/* Rename the file. */
563	rc = vdIfIoIntFileMove(pImage->pIfIo, pImage->pszFilename, pszFilename, 0);
564	if (RT_SUCCESS(rc))
565	{
566	/* Update pImage with the new information. */
567	pImage->pszFilename = pszFilename;
568
569	/* Open the old image with new name. */
570	rc = parallelsOpenImage(pImage, pImage->uOpenFlags);
571	}
572	else
573	{
574	/* The move failed, try to reopen the original image. */
575	int rc2 = parallelsOpenImage(pImage, pImage->uOpenFlags);
576	if (RT_FAILURE(rc2))
577	rc = rc2;
578	}
579	}
580
581	LogFlowFunc(("returns %Rrc\n", rc));
582	return rc;
583	}
584
585	/** @copydoc VDIMAGEBACKEND::pfnClose */
586	static DECLCALLBACK(int) parallelsClose(void *pBackendData, bool fDelete)
587	{
588	LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete));
589	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
590	int rc = parallelsFreeImage(pImage, fDelete);
591	RTMemFree(pImage);
592
593	LogFlowFunc(("returns %Rrc\n", rc));
594	return rc;
595	}
596
597	/** @copydoc VDIMAGEBACKEND::pfnRead */
598	static DECLCALLBACK(int) parallelsRead(void *pBackendData, uint64_t uOffset, size_t cbToRead,
599	PVDIOCTX pIoCtx, size_t *pcbActuallyRead)
600	{
601	LogFlowFunc(("pBackendData=%#p uOffset=%llu pIoCtx=%#p cbToRead=%zu pcbActuallyRead=%#p\n",
602	pBackendData, uOffset, pIoCtx, cbToRead, pcbActuallyRead));
603	int rc = VINF_SUCCESS;
604	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
605	uint64_t uSector;
606	uint64_t uOffsetInFile;
607	uint32_t iIndexInAllocationTable;
608
609	AssertPtr(pImage);
610	Assert(uOffset % 512 == 0);
611	Assert(cbToRead % 512 == 0);
612
613	if (pImage->uImageFlags & VD_IMAGE_FLAGS_FIXED)
614	rc = vdIfIoIntFileReadUser(pImage->pIfIo, pImage->pStorage, uOffset,
615	pIoCtx, cbToRead);
616	else
617	{
618	/* Calculate offset in the real file. */
619	uSector = uOffset / 512;
620	/* One chunk in the file is always one track big. */
621	iIndexInAllocationTable = (uint32_t)(uSector / pImage->PCHSGeometry.cSectors);
622	uSector = uSector % pImage->PCHSGeometry.cSectors;
623
624	cbToRead = RT_MIN(cbToRead, (pImage->PCHSGeometry.cSectors - uSector)*512);
625
626	if (pImage->pAllocationBitmap[iIndexInAllocationTable] == 0)
627	rc = VERR_VD_BLOCK_FREE;
628	else
629	{
630	uOffsetInFile = (pImage->pAllocationBitmap[iIndexInAllocationTable] + uSector) * 512;
631	rc = vdIfIoIntFileReadUser(pImage->pIfIo, pImage->pStorage, uOffsetInFile,
632	pIoCtx, cbToRead);
633	}
634	}
635
636	*pcbActuallyRead = cbToRead;
637
638	LogFlowFunc(("returns %Rrc\n", rc));
639	return rc;
640	}
641
642	/** @copydoc VDIMAGEBACKEND::pfnWrite */
643	static DECLCALLBACK(int) parallelsWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite,
644	PVDIOCTX pIoCtx, size_t pcbWriteProcess, size_t pcbPreRead,
645	size_t *pcbPostRead, unsigned fWrite)
646	{
647	LogFlowFunc(("pBackendData=%#p uOffset=%llu pIoCtx=%#p cbToWrite=%zu pcbWriteProcess=%#p\n",
648	pBackendData, uOffset, pIoCtx, cbToWrite, pcbWriteProcess));
649	int rc = VINF_SUCCESS;
650	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
651	uint64_t uSector;
652	uint64_t uOffsetInFile;
653	uint32_t iIndexInAllocationTable;
654
655	AssertPtr(pImage);
656	Assert(uOffset % 512 == 0);
657	Assert(cbToWrite % 512 == 0);
658
659	if (pImage->uImageFlags & VD_IMAGE_FLAGS_FIXED)
660	rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage, uOffset,
661	pIoCtx, cbToWrite, NULL, NULL);
662	else
663	{
664	/* Calculate offset in the real file. */
665	uSector = uOffset / 512;
666	/* One chunk in the file is always one track big. */
667	iIndexInAllocationTable = (uint32_t)(uSector / pImage->PCHSGeometry.cSectors);
668	uSector = uSector % pImage->PCHSGeometry.cSectors;
669
670	cbToWrite = RT_MIN(cbToWrite, (pImage->PCHSGeometry.cSectors - uSector)*512);
671
672	if (pImage->pAllocationBitmap[iIndexInAllocationTable] == 0)
673	{
674	if (fWrite & VD_WRITE_NO_ALLOC)
675	{
676	pcbPreRead = uSector 512;
677	pcbPostRead = pImage->PCHSGeometry.cSectors 512 - cbToWrite - *pcbPreRead;
678
679	if (pcbWriteProcess)
680	*pcbWriteProcess = cbToWrite;
681	return VERR_VD_BLOCK_FREE;
682	}
683
684	/* Allocate new chunk in the file. */
685	Assert(uSector == 0);
686	AssertMsg(pImage->cbFileCurrent % 512 == 0, ("File size is not a multiple of 512\n"));
687	pImage->pAllocationBitmap[iIndexInAllocationTable] = (uint32_t)(pImage->cbFileCurrent / 512);
688	pImage->cbFileCurrent += pImage->PCHSGeometry.cSectors * 512;
689	pImage->fAllocationBitmapChanged = true;
690	uOffsetInFile = (uint64_t)pImage->pAllocationBitmap[iIndexInAllocationTable] * 512;
691
692	/*
693	* Write the new block at the current end of the file.
694	*/
695	rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage,
696	uOffsetInFile, pIoCtx, cbToWrite, NULL, NULL);
697	if (RT_SUCCESS(rc) \|\| (rc == VERR_VD_ASYNC_IO_IN_PROGRESS))
698	{
699	/* Write the changed allocation bitmap entry. */
700	/** @todo Error handling. */
701	rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
702	sizeof(ParallelsHeader) + iIndexInAllocationTable * sizeof(uint32_t),
703	&pImage->pAllocationBitmap[iIndexInAllocationTable],
704	sizeof(uint32_t), pIoCtx,
705	NULL, NULL);
706	}
707
708	*pcbPreRead = 0;
709	*pcbPostRead = 0;
710	}
711	else
712	{
713	uOffsetInFile = (pImage->pAllocationBitmap[iIndexInAllocationTable] + uSector) * 512;
714	rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage,
715	uOffsetInFile, pIoCtx, cbToWrite, NULL, NULL);
716	}
717	}
718
719	if (pcbWriteProcess)
720	*pcbWriteProcess = cbToWrite;
721
722	LogFlowFunc(("returns %Rrc\n", rc));
723	return rc;
724	}
725
726	/** @copydoc VDIMAGEBACKEND::pfnFlush */
727	static DECLCALLBACK(int) parallelsFlush(void *pBackendData, PVDIOCTX pIoCtx)
728	{
729	int rc = VINF_SUCCESS;
730	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
731
732	LogFlowFunc(("pImage=#%p\n", pImage));
733
734	/* Flush the file, everything is up to date already. */
735	rc = vdIfIoIntFileFlush(pImage->pIfIo, pImage->pStorage, pIoCtx, NULL, NULL);
736
737	LogFlowFunc(("returns %Rrc\n", rc));
738	return rc;
739	}
740
741	/** @copydoc VDIMAGEBACKEND::pfnGetVersion */
742	static DECLCALLBACK(unsigned) parallelsGetVersion(void *pBackendData)
743	{
744	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
745	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
746
747	AssertPtrReturn(pImage, 0);
748
749	return PARALLELS_DISK_VERSION;
750	}
751
752	/** @copydoc VDIMAGEBACKEND::pfnGetFileSize */
753	static DECLCALLBACK(uint64_t) parallelsGetFileSize(void *pBackendData)
754	{
755	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
756	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
757	uint64_t cb = 0;
758
759	AssertPtrReturn(pImage, 0);
760
761	if (pImage->pStorage)
762	cb = pImage->cbFileCurrent;
763
764	LogFlowFunc(("returns %lld\n", cb));
765	return cb;
766	}
767
768	/** @copydoc VDIMAGEBACKEND::pfnGetPCHSGeometry */
769	static DECLCALLBACK(int) parallelsGetPCHSGeometry(void *pBackendData,
770	PVDGEOMETRY pPCHSGeometry)
771	{
772	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry));
773	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
774	int rc = VINF_SUCCESS;
775
776	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
777
778	if (pImage->PCHSGeometry.cCylinders)
779	*pPCHSGeometry = pImage->PCHSGeometry;
780	else
781	rc = VERR_VD_GEOMETRY_NOT_SET;
782
783	LogFlowFunc(("returns %Rrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
784	return rc;
785	}
786
787	/** @copydoc VDIMAGEBACKEND::pfnSetPCHSGeometry */
788	static DECLCALLBACK(int) parallelsSetPCHSGeometry(void *pBackendData,
789	PCVDGEOMETRY pPCHSGeometry)
790	{
791	LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n", pBackendData,
792	pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
793	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
794	int rc = VINF_SUCCESS;
795
796	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
797
798	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
799	rc = VERR_VD_IMAGE_READ_ONLY;
800	else
801	pImage->PCHSGeometry = *pPCHSGeometry;
802
803	LogFlowFunc(("returns %Rrc\n", rc));
804	return rc;
805	}
806
807	/** @copydoc VDIMAGEBACKEND::pfnGetLCHSGeometry */
808	static DECLCALLBACK(int) parallelsGetLCHSGeometry(void *pBackendData,
809	PVDGEOMETRY pLCHSGeometry)
810	{
811	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry));
812	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
813	int rc = VINF_SUCCESS;
814
815	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
816
817	if (pImage->LCHSGeometry.cCylinders)
818	*pLCHSGeometry = pImage->LCHSGeometry;
819	else
820	rc = VERR_VD_GEOMETRY_NOT_SET;
821
822	LogFlowFunc(("returns %Rrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
823	return rc;
824	}
825
826	/** @copydoc VDIMAGEBACKEND::pfnSetLCHSGeometry */
827	static DECLCALLBACK(int) parallelsSetLCHSGeometry(void *pBackendData,
828	PCVDGEOMETRY pLCHSGeometry)
829	{
830	LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n", pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
831	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
832	int rc = VINF_SUCCESS;
833
834	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
835
836	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
837	rc = VERR_VD_IMAGE_READ_ONLY;
838	else
839	pImage->LCHSGeometry = *pLCHSGeometry;
840
841	LogFlowFunc(("returns %Rrc\n", rc));
842	return rc;
843	}
844
845	/** @copydoc VDIMAGEBACKEND::pfnQueryRegions */
846	static DECLCALLBACK(int) parallelsQueryRegions(void pBackendData, PCVDREGIONLIST ppRegionList)
847	{
848	LogFlowFunc(("pBackendData=%#p ppRegionList=%#p\n", pBackendData, ppRegionList));
849	PPARALLELSIMAGE pThis = (PPARALLELSIMAGE)pBackendData;
850
851	AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
852
853	*ppRegionList = &pThis->RegionList;
854	LogFlowFunc(("returns %Rrc\n", VINF_SUCCESS));
855	return VINF_SUCCESS;
856	}
857
858	/** @copydoc VDIMAGEBACKEND::pfnRegionListRelease */
859	static DECLCALLBACK(void) parallelsRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList)
860	{
861	RT_NOREF1(pRegionList);
862	LogFlowFunc(("pBackendData=%#p pRegionList=%#p\n", pBackendData, pRegionList));
863	PPARALLELSIMAGE pThis = (PPARALLELSIMAGE)pBackendData;
864	AssertPtr(pThis); RT_NOREF(pThis);
865
866	/* Nothing to do here. */
867	}
868
869	/** @copydoc VDIMAGEBACKEND::pfnGetImageFlags */
870	static DECLCALLBACK(unsigned) parallelsGetImageFlags(void *pBackendData)
871	{
872	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
873	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
874
875	AssertPtrReturn(pImage, 0);
876
877	LogFlowFunc(("returns %#x\n", pImage->uImageFlags));
878	return pImage->uImageFlags;
879	}
880
881	/** @copydoc VDIMAGEBACKEND::pfnGetOpenFlags */
882	static DECLCALLBACK(unsigned) parallelsGetOpenFlags(void *pBackendData)
883	{
884	LogFlowFunc(("pBackendData=%#p\n", pBackendData));
885	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
886
887	AssertPtrReturn(pImage, 0);
888
889	LogFlowFunc(("returns %#x\n", pImage->uOpenFlags));
890	return pImage->uOpenFlags;
891	}
892
893	/** @copydoc VDIMAGEBACKEND::pfnSetOpenFlags */
894	static DECLCALLBACK(int) parallelsSetOpenFlags(void *pBackendData, unsigned uOpenFlags)
895	{
896	LogFlowFunc(("pBackendData=%#p\n uOpenFlags=%#x", pBackendData, uOpenFlags));
897	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
898	int rc = VINF_SUCCESS;
899
900	/* Image must be opened and the new flags must be valid. */
901	if (!pImage \|\| (uOpenFlags & ~( VD_OPEN_FLAGS_READONLY \| VD_OPEN_FLAGS_INFO
902	\| VD_OPEN_FLAGS_ASYNC_IO \| VD_OPEN_FLAGS_SHAREABLE
903	\| VD_OPEN_FLAGS_SEQUENTIAL \| VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS)))
904	rc = VERR_INVALID_PARAMETER;
905	else
906	{
907	/* Implement this operation via reopening the image. */
908	parallelsFreeImage(pImage, false);
909	rc = parallelsOpenImage(pImage, uOpenFlags);
910	}
911
912	LogFlowFunc(("returns %Rrc\n", rc));
913	return rc;
914	}
915
916	/** @copydoc VDIMAGEBACKEND::pfnGetComment */
917	static DECLCALLBACK(int) parallelsGetComment(void pBackendData, char pszComment,
918	size_t cbComment)
919	{
920	RT_NOREF2(pszComment, cbComment);
921	LogFlowFunc(("pBackendData=%#p pszComment=%#p cbComment=%zu\n", pBackendData, pszComment, cbComment));
922	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
923
924	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
925
926	LogFlowFunc(("returns %Rrc comment='%s'\n", VERR_NOT_SUPPORTED, pszComment));
927	return VERR_NOT_SUPPORTED;
928	}
929
930	/** @copydoc VDIMAGEBACKEND::pfnSetComment */
931	static DECLCALLBACK(int) parallelsSetComment(void pBackendData, const char pszComment)
932	{
933	RT_NOREF1(pszComment);
934	LogFlowFunc(("pBackendData=%#p pszComment=\"%s\"\n", pBackendData, pszComment));
935	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
936
937	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
938
939	int rc;
940	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
941	rc = VERR_VD_IMAGE_READ_ONLY;
942	else
943	rc = VERR_NOT_SUPPORTED;
944
945	LogFlowFunc(("returns %Rrc\n", rc));
946	return rc;
947	}
948
949	/** @copydoc VDIMAGEBACKEND::pfnGetUuid */
950	static DECLCALLBACK(int) parallelsGetUuid(void *pBackendData, PRTUUID pUuid)
951	{
952	RT_NOREF1(pUuid);
953	LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
954	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
955
956	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
957
958	LogFlowFunc(("returns %Rrc (%RTuuid)\n", VERR_NOT_SUPPORTED, pUuid));
959	return VERR_NOT_SUPPORTED;
960	}
961
962	/** @copydoc VDIMAGEBACKEND::pfnSetUuid */
963	static DECLCALLBACK(int) parallelsSetUuid(void *pBackendData, PCRTUUID pUuid)
964	{
965	RT_NOREF1(pUuid);
966	LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
967	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
968
969	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
970
971	int rc;
972	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
973	rc = VERR_VD_IMAGE_READ_ONLY;
974	else
975	rc = VERR_NOT_SUPPORTED;
976
977	LogFlowFunc(("returns %Rrc\n", rc));
978	return rc;
979	}
980
981	/** @copydoc VDIMAGEBACKEND::pfnGetModificationUuid */
982	static DECLCALLBACK(int) parallelsGetModificationUuid(void *pBackendData, PRTUUID pUuid)
983	{
984	RT_NOREF1(pUuid);
985	LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
986	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
987
988	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
989
990	LogFlowFunc(("returns %Rrc (%RTuuid)\n", VERR_NOT_SUPPORTED, pUuid));
991	return VERR_NOT_SUPPORTED;
992	}
993
994	/** @copydoc VDIMAGEBACKEND::pfnSetModificationUuid */
995	static DECLCALLBACK(int) parallelsSetModificationUuid(void *pBackendData, PCRTUUID pUuid)
996	{
997	RT_NOREF1(pUuid);
998	LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
999	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
1000
1001	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
1002
1003	int rc;
1004	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1005	rc = VERR_VD_IMAGE_READ_ONLY;
1006	else
1007	rc = VERR_NOT_SUPPORTED;
1008
1009	LogFlowFunc(("returns %Rrc\n", rc));
1010	return rc;
1011	}
1012
1013	/** @copydoc VDIMAGEBACKEND::pfnGetParentUuid */
1014	static DECLCALLBACK(int) parallelsGetParentUuid(void *pBackendData, PRTUUID pUuid)
1015	{
1016	RT_NOREF1(pUuid);
1017	LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
1018	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
1019
1020	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
1021
1022	LogFlowFunc(("returns %Rrc (%RTuuid)\n", VERR_NOT_SUPPORTED, pUuid));
1023	return VERR_NOT_SUPPORTED;
1024	}
1025
1026	/** @copydoc VDIMAGEBACKEND::pfnSetParentUuid */
1027	static DECLCALLBACK(int) parallelsSetParentUuid(void *pBackendData, PCRTUUID pUuid)
1028	{
1029	RT_NOREF1(pUuid);
1030	LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
1031	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
1032
1033	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
1034
1035	int rc;
1036	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1037	rc = VERR_VD_IMAGE_READ_ONLY;
1038	else
1039	rc = VERR_NOT_SUPPORTED;
1040
1041	LogFlowFunc(("returns %Rrc\n", rc));
1042	return rc;
1043	}
1044
1045	/** @copydoc VDIMAGEBACKEND::pfnGetParentModificationUuid */
1046	static DECLCALLBACK(int) parallelsGetParentModificationUuid(void *pBackendData, PRTUUID pUuid)
1047	{
1048	RT_NOREF1(pUuid);
1049	LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
1050	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
1051
1052	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
1053
1054	int rc;
1055	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1056	rc = VERR_VD_IMAGE_READ_ONLY;
1057	else
1058	rc = VERR_NOT_SUPPORTED;
1059
1060	LogFlowFunc(("returns %Rrc (%RTuuid)\n", rc, pUuid));
1061	return rc;
1062	}
1063
1064	/** @copydoc VDIMAGEBACKEND::pfnSetParentModificationUuid */
1065	static DECLCALLBACK(int) parallelsSetParentModificationUuid(void *pBackendData, PCRTUUID pUuid)
1066	{
1067	RT_NOREF1(pUuid);
1068	LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
1069	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
1070
1071	AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
1072
1073	int rc;
1074	if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1075	rc = VERR_VD_IMAGE_READ_ONLY;
1076	else
1077	rc = VERR_NOT_SUPPORTED;
1078
1079	LogFlowFunc(("returns %Rrc\n", rc));
1080	return rc;
1081	}
1082
1083	/** @copydoc VDIMAGEBACKEND::pfnDump */
1084	static DECLCALLBACK(void) parallelsDump(void *pBackendData)
1085	{
1086	PPARALLELSIMAGE pImage = (PPARALLELSIMAGE)pBackendData;
1087
1088	AssertPtrReturnVoid(pImage);
1089	vdIfErrorMessage(pImage->pIfError, "Header: Geometry PCHS=%u/%u/%u LCHS=%u/%u/%u\n",
1090	pImage->PCHSGeometry.cCylinders, pImage->PCHSGeometry.cHeads, pImage->PCHSGeometry.cSectors,
1091	pImage->LCHSGeometry.cCylinders, pImage->LCHSGeometry.cHeads, pImage->LCHSGeometry.cSectors);
1092	}
1093
1094
1095
1096	const VDIMAGEBACKEND g_ParallelsBackend =
1097	{
1098	/* u32Version */
1099	VD_IMGBACKEND_VERSION,
1100	/* pszBackendName */
1101	"Parallels",
1102	/* uBackendCaps */
1103	VD_CAP_FILE \| VD_CAP_ASYNC \| VD_CAP_VFS \| VD_CAP_CREATE_DYNAMIC \| VD_CAP_DIFF,
1104	/* paFileExtensions */
1105	s_aParallelsFileExtensions,
1106	/* paConfigInfo */
1107	NULL,
1108	/* pfnProbe */
1109	parallelsProbe,
1110	/* pfnOpen */
1111	parallelsOpen,
1112	/* pfnCreate */
1113	parallelsCreate,
1114	/* pfnRename */
1115	parallelsRename,
1116	/* pfnClose */
1117	parallelsClose,
1118	/* pfnRead */
1119	parallelsRead,
1120	/* pfnWrite */
1121	parallelsWrite,
1122	/* pfnFlush */
1123	parallelsFlush,
1124	/* pfnDiscard */
1125	NULL,
1126	/* pfnGetVersion */
1127	parallelsGetVersion,
1128	/* pfnGetFileSize */
1129	parallelsGetFileSize,
1130	/* pfnGetPCHSGeometry */
1131	parallelsGetPCHSGeometry,
1132	/* pfnSetPCHSGeometry */
1133	parallelsSetPCHSGeometry,
1134	/* pfnGetLCHSGeometry */
1135	parallelsGetLCHSGeometry,
1136	/* pfnSetLCHSGeometry */
1137	parallelsSetLCHSGeometry,
1138	/* pfnQueryRegions */
1139	parallelsQueryRegions,
1140	/* pfnRegionListRelease */
1141	parallelsRegionListRelease,
1142	/* pfnGetImageFlags */
1143	parallelsGetImageFlags,
1144	/* pfnGetOpenFlags */
1145	parallelsGetOpenFlags,
1146	/* pfnSetOpenFlags */
1147	parallelsSetOpenFlags,
1148	/* pfnGetComment */
1149	parallelsGetComment,
1150	/* pfnSetComment */
1151	parallelsSetComment,
1152	/* pfnGetUuid */
1153	parallelsGetUuid,
1154	/* pfnSetUuid */
1155	parallelsSetUuid,
1156	/* pfnGetModificationUuid */
1157	parallelsGetModificationUuid,
1158	/* pfnSetModificationUuid */
1159	parallelsSetModificationUuid,
1160	/* pfnGetParentUuid */
1161	parallelsGetParentUuid,
1162	/* pfnSetParentUuid */
1163	parallelsSetParentUuid,
1164	/* pfnGetParentModificationUuid */
1165	parallelsGetParentModificationUuid,
1166	/* pfnSetParentModificationUuid */
1167	parallelsSetParentModificationUuid,
1168	/* pfnDump */
1169	parallelsDump,
1170	/* pfnGetTimestamp */
1171	NULL,
1172	/* pfnGetParentTimestamp */
1173	NULL,
1174	/* pfnSetParentTimestamp */
1175	NULL,
1176	/* pfnGetParentFilename */
1177	NULL,
1178	/* pfnSetParentFilename */
1179	NULL,
1180	/* pfnComposeLocation */
1181	genericFileComposeLocation,
1182	/* pfnComposeName */
1183	genericFileComposeName,
1184	/* pfnCompact */
1185	NULL,
1186	/* pfnResize */
1187	NULL,
1188	/* pfnRepair */
1189	NULL,
1190	/* pfnTraverseMetadata */
1191	NULL,
1192	/* u32VersionEnd */
1193	VD_IMGBACKEND_VERSION
1194	};

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source: vbox/trunk/src/VBox/Storage/Parallels.cpp@ 93231

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