VirtualBox

source: vbox/trunk/src/VBox/Devices/Storage/VDIHDDCore.cpp@ 7159

Last change on this file since 7159 was 7159, checked in by vboxsync, 17 years ago

Added VBoxHDD-new VDI backend. Untested, but harmless as the code won't be used without further changes.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 55.7 KB
Line 
1/** @file
2 * Virtual Disk Image (VDI), Core Code.
3 */
4
5/*
6 * Copyright (C) 2006-2007 innotek GmbH
7 *
8 * This file is part of VirtualBox Open Source Edition (OSE), as
9 * available from http://www.virtualbox.org. This file is free software;
10 * you can redistribute it and/or modify it under the terms of the GNU
11 * General Public License (GPL) as published by the Free Software
12 * Foundation, in version 2 as it comes in the "COPYING" file of the
13 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15 */
16
17/*******************************************************************************
18* Header Files *
19*******************************************************************************/
20#define LOG_GROUP LOG_GROUP_VD_VDI
21#include "VBoxHDD-newInternal.h"
22#define VBOX_VDICORE_VD /* Signal that the header is included from here. */
23#include "VDICore.h"
24#include <VBox/err.h>
25
26#include <VBox/log.h>
27#include <iprt/alloc.h>
28#include <iprt/assert.h>
29#include <iprt/uuid.h>
30#include <iprt/file.h>
31#include <iprt/string.h>
32#include <iprt/asm.h>
33
34#define VDI_IMAGE_DEFAULT_BLOCK_SIZE _1M
35
36/*******************************************************************************
37* Internal Functions *
38*******************************************************************************/
39static unsigned getPowerOfTwo(unsigned uNumber);
40static void vdiInitPreHeader(PVDIPREHEADER pPreHdr);
41static int vdiValidatePreHeader(PVDIPREHEADER pPreHdr);
42static void vdiInitHeader(PVDIHEADER pHeader, VDIMAGETYPE enmType, uint32_t uImageFlags,
43 const char *pszComment, uint64_t cbDisk, uint32_t cbBlock,
44 uint32_t cbBlockExtra);
45static int vdiValidateHeader(PVDIHEADER pHeader);
46static void vdiSetupImageDesc(PVDIIMAGEDESC pImage);
47static int vdiUpdateHeader(PVDIIMAGEDESC pImage);
48static int vdiUpdateBlockInfo(PVDIIMAGEDESC pImage, unsigned uBlock);
49static void vdiFreeImage(PVDIIMAGEDESC pImage, bool fDelete);
50
51
52/**
53 * Internal: signal an error to the frontend.
54 */
55DECLINLINE(int) vdiError(PVDIIMAGEDESC pImage, int rc, RT_SRC_POS_DECL,
56 const char *pszFormat, ...)
57{
58 va_list va;
59 va_start(va, pszFormat);
60 if (pImage->pfnError)
61 pImage->pfnError(pImage->pvErrorUser, rc, RT_SRC_POS_ARGS,
62 pszFormat, va);
63 va_end(va);
64 return rc;
65}
66
67
68/**
69 * internal: return power of 2 or 0 if num error.
70 */
71static unsigned getPowerOfTwo(unsigned uNumber)
72{
73 if (uNumber == 0)
74 return 0;
75 unsigned uPower2 = 0;
76 while ((uNumber & 1) == 0)
77 {
78 uNumber >>= 1;
79 uPower2++;
80 }
81 return uNumber == 1 ? uPower2 : 0;
82}
83
84
85/**
86 * Internal: Init VDI preheader.
87 */
88static void vdiInitPreHeader(PVDIPREHEADER pPreHdr)
89{
90 pPreHdr->u32Signature = VDI_IMAGE_SIGNATURE;
91 pPreHdr->u32Version = VDI_IMAGE_VERSION;
92 memset(pPreHdr->szFileInfo, 0, sizeof(pPreHdr->szFileInfo));
93 strncat(pPreHdr->szFileInfo, VDI_IMAGE_FILE_INFO, sizeof(pPreHdr->szFileInfo));
94}
95
96/**
97 * Internal: check VDI preheader.
98 */
99static int vdiValidatePreHeader(PVDIPREHEADER pPreHdr)
100{
101 if (pPreHdr->u32Signature != VDI_IMAGE_SIGNATURE)
102 return VERR_VDI_INVALID_SIGNATURE;
103
104 if ( VDI_GET_VERSION_MAJOR(pPreHdr->u32Version) != VDI_IMAGE_VERSION_MAJOR
105 && pPreHdr->u32Version != 0x00000002) /* old version. */
106 return VERR_VDI_UNSUPPORTED_VERSION;
107
108 return VINF_SUCCESS;
109}
110
111/**
112 * Internal: Init VDI header. Always use latest header version.
113 * @param pHeader Assumes it was initially initialized to all zeros.
114 */
115static void vdiInitHeader(PVDIHEADER pHeader, VDIMAGETYPE enmType, uint32_t uImageFlags,
116 const char *pszComment, uint64_t cbDisk, uint32_t cbBlock,
117 uint32_t cbBlockExtra)
118{
119 pHeader->uVersion = VDI_IMAGE_VERSION;
120 pHeader->u.v1.cbHeader = sizeof(VDIHEADER1);
121 pHeader->u.v1.u32Type = (uint32_t)( enmType == VD_IMAGE_TYPE_NORMAL
122 ? VDI_IMAGE_TYPE_NORMAL
123 : VDI_IMAGE_TYPE_DIFF);
124 pHeader->u.v1.fFlags = uImageFlags;
125#ifdef VBOX_STRICT
126 char achZero[VDI_IMAGE_COMMENT_SIZE] = {0};
127 Assert(!memcmp(pHeader->u.v1.szComment, achZero, VDI_IMAGE_COMMENT_SIZE));
128#endif
129 pHeader->u.v1.szComment[0] = '\0';
130 if (pszComment)
131 {
132 AssertMsg(strlen(pszComment) < sizeof(pHeader->u.v1.szComment),
133 ("HDD Comment is too long, cb=%d\n", strlen(pszComment)));
134 strncat(pHeader->u.v1.szComment, pszComment, sizeof(pHeader->u.v1.szComment));
135 }
136
137 /* Mark the legacy geometry not-calculated. */
138 pHeader->u.v1.LegacyGeometry.cCylinders = 0;
139 pHeader->u.v1.LegacyGeometry.cHeads = 0;
140 pHeader->u.v1.LegacyGeometry.cSectors = 0;
141 pHeader->u.v1.LegacyGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
142 pHeader->u.v1.u32Dummy = 0; /* used to be the translation value */
143
144 pHeader->u.v1.cbDisk = cbDisk;
145 pHeader->u.v1.cbBlock = cbBlock;
146 pHeader->u.v1.cBlocks = (uint32_t)(cbDisk / cbBlock);
147 if (cbDisk % cbBlock)
148 pHeader->u.v1.cBlocks++;
149 pHeader->u.v1.cbBlockExtra = cbBlockExtra;
150 pHeader->u.v1.cBlocksAllocated = 0;
151
152 /* Init offsets. */
153 pHeader->u.v1.offBlocks = RT_ALIGN_32(sizeof(VDIPREHEADER) + sizeof(VDIHEADER1), VDI_GEOMETRY_SECTOR_SIZE);
154 pHeader->u.v1.offData = RT_ALIGN_32(pHeader->u.v1.offBlocks + (pHeader->u.v1.cBlocks * sizeof(VDIIMAGEBLOCKPOINTER)), VDI_GEOMETRY_SECTOR_SIZE);
155
156 /* Init uuids. */
157 RTUuidCreate(&pHeader->u.v1.uuidCreate);
158 RTUuidClear(&pHeader->u.v1.uuidModify);
159 RTUuidClear(&pHeader->u.v1.uuidLinkage);
160 RTUuidClear(&pHeader->u.v1.uuidParentModify);
161
162 /* Mark LCHS geometry not-calculated. */
163 pHeader->u.v1plus.LCHSGeometry.cCylinders = 0;
164 pHeader->u.v1plus.LCHSGeometry.cHeads = 0;
165 pHeader->u.v1plus.LCHSGeometry.cSectors = 0;
166 pHeader->u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
167}
168
169/**
170 * Internal: Check VDI header.
171 */
172static int vdiValidateHeader(PVDIHEADER pHeader)
173{
174 /* Check version-dependend header parameters. */
175 switch (GET_MAJOR_HEADER_VERSION(pHeader))
176 {
177 case 0:
178 {
179 /* Old header version. */
180 break;
181 }
182 case 1:
183 {
184 /* Current header version. */
185
186 if (pHeader->u.v1.cbHeader < sizeof(VDIHEADER1))
187 {
188 LogRel(("VDI: v1 header size wrong (%d < %d)\n",
189 pHeader->u.v1.cbHeader, sizeof(VDIHEADER1)));
190 return VERR_VDI_INVALID_HEADER;
191 }
192
193 if (getImageBlocksOffset(pHeader) < (sizeof(VDIPREHEADER) + sizeof(VDIHEADER1)))
194 {
195 LogRel(("VDI: v1 blocks offset wrong (%d < %d)\n",
196 getImageBlocksOffset(pHeader), sizeof(VDIPREHEADER) + sizeof(VDIHEADER1)));
197 return VERR_VDI_INVALID_HEADER;
198 }
199
200 if (getImageDataOffset(pHeader) < (getImageBlocksOffset(pHeader) + getImageBlocks(pHeader) * sizeof(VDIIMAGEBLOCKPOINTER)))
201 {
202 LogRel(("VDI: v1 image data offset wrong (%d < %d)\n",
203 getImageDataOffset(pHeader), getImageBlocksOffset(pHeader) + getImageBlocks(pHeader) * sizeof(VDIIMAGEBLOCKPOINTER)));
204 return VERR_VDI_INVALID_HEADER;
205 }
206
207 break;
208 }
209 default:
210 /* Unsupported. */
211 return VERR_VDI_UNSUPPORTED_VERSION;
212 }
213
214 /* Check common header parameters. */
215
216 bool fFailed = false;
217
218 if ( getImageType(pHeader) < VDI_IMAGE_TYPE_FIRST
219 || getImageType(pHeader) > VDI_IMAGE_TYPE_LAST)
220 {
221 LogRel(("VDI: bad image type %d\n", getImageType(pHeader)));
222 fFailed = true;
223 }
224
225 if (getImageFlags(pHeader) & ~VD_VDI_IMAGE_FLAGS_MASK)
226 {
227 LogRel(("VDI: bad image flags %08x\n", getImageFlags(pHeader)));
228 fFailed = true;
229 }
230
231 if ( getImageLCHSGeometry(pHeader)
232 && (getImageLCHSGeometry(pHeader))->cbSector != VDI_GEOMETRY_SECTOR_SIZE)
233 {
234 LogRel(("VDI: wrong sector size (%d != %d)\n",
235 (getImageLCHSGeometry(pHeader))->cbSector, VDI_GEOMETRY_SECTOR_SIZE));
236 fFailed = true;
237 }
238
239 if ( getImageDiskSize(pHeader) == 0
240 || getImageBlockSize(pHeader) == 0
241 || getImageBlocks(pHeader) == 0
242 || getPowerOfTwo(getImageBlockSize(pHeader)) == 0)
243 {
244 LogRel(("VDI: wrong size (%lld, %d, %d, %d)\n",
245 getImageDiskSize(pHeader), getImageBlockSize(pHeader),
246 getImageBlocks(pHeader), getPowerOfTwo(getImageBlockSize(pHeader))));
247 fFailed = true;
248 }
249
250 if (getImageBlocksAllocated(pHeader) > getImageBlocks(pHeader))
251 {
252 LogRel(("VDI: too many blocks allocated (%d > %d)\n"
253 " blocksize=%d disksize=%lld\n",
254 getImageBlocksAllocated(pHeader), getImageBlocks(pHeader),
255 getImageBlockSize(pHeader), getImageDiskSize(pHeader)));
256 fFailed = true;
257 }
258
259 if ( getImageExtraBlockSize(pHeader) != 0
260 && getPowerOfTwo(getImageExtraBlockSize(pHeader)) == 0)
261 {
262 LogRel(("VDI: wrong extra size (%d, %d)\n",
263 getImageExtraBlockSize(pHeader), getPowerOfTwo(getImageExtraBlockSize(pHeader))));
264 fFailed = true;
265 }
266
267 if ((uint64_t)getImageBlockSize(pHeader) * getImageBlocks(pHeader) < getImageDiskSize(pHeader))
268 {
269 LogRel(("VDI: wrong disk size (%d, %d, %lld)\n",
270 getImageBlockSize(pHeader), getImageBlocks(pHeader), getImageDiskSize(pHeader)));
271 fFailed = true;
272 }
273
274 if (RTUuidIsNull(getImageCreationUUID(pHeader)))
275 {
276 LogRel(("VDI: uuid of creator is 0\n"));
277 fFailed = true;
278 }
279
280 if (RTUuidIsNull(getImageModificationUUID(pHeader)))
281 {
282 LogRel(("VDI: uuid of modificator is 0\n"));
283 fFailed = true;
284 }
285
286 return fFailed ? VERR_VDI_INVALID_HEADER : VINF_SUCCESS;
287}
288
289/**
290 * Internal: Set up VDIIMAGEDESC structure by image header.
291 */
292static void vdiSetupImageDesc(PVDIIMAGEDESC pImage)
293{
294 pImage->uImageFlags = getImageFlags(&pImage->Header);
295 pImage->offStartBlocks = getImageBlocksOffset(&pImage->Header);
296 pImage->offStartData = getImageDataOffset(&pImage->Header);
297 pImage->uBlockMask = getImageBlockSize(&pImage->Header) - 1;
298 pImage->uShiftIndex2Offset =
299 pImage->uShiftOffset2Index = getPowerOfTwo(getImageBlockSize(&pImage->Header));
300 pImage->offStartBlockData = getImageExtraBlockSize(&pImage->Header);
301 if (pImage->offStartBlockData != 0)
302 pImage->uShiftIndex2Offset += getPowerOfTwo(pImage->offStartBlockData);
303}
304
305/**
306 * Internal: Create VDI image file.
307 */
308static int vdiCreateImage(PVDIIMAGEDESC pImage, VDIMAGETYPE enmType,
309 uint64_t cbSize, unsigned uImageFlags,
310 const char *pszComment,
311 PCPDMMEDIAGEOMETRY pPCHSGeometry,
312 PCPDMMEDIAGEOMETRY pLCHSGeometry,
313 PFNVMPROGRESS pfnProgress, void *pvUser,
314 unsigned uPercentStart, unsigned uPercentSpan)
315{
316 int rc;
317 RTFILE File;
318 uint64_t cbTotal;
319 uint64_t cbFill;
320 uint64_t uOff;
321
322 /* Special check for comment length. */
323 if ( VALID_PTR(pszComment)
324 && strlen(pszComment) >= VDI_IMAGE_COMMENT_SIZE)
325 {
326 rc = vdiError(pImage, VERR_VDI_COMMENT_TOO_LONG, RT_SRC_POS, N_("VDI: comment is too long for '%s'"), pImage->pszFilename);
327 goto out;
328 }
329 Assert(VALID_PTR(pPCHSGeometry));
330 Assert(VALID_PTR(pLCHSGeometry));
331
332 vdiInitPreHeader(&pImage->PreHeader);
333 vdiInitHeader(&pImage->Header, enmType, uImageFlags, pszComment, cbSize, VDI_IMAGE_DEFAULT_BLOCK_SIZE, 0);
334 /* Save PCHS geometry. Not much work, and makes the flow of information
335 * quite a bit clearer - relying on the higher level isn't obvious. */
336 pImage->PCHSGeometry = *pPCHSGeometry;
337 /* Set LCHS geometry (legacy geometry is ignored for the current 1.1+). */
338 pImage->Header.u.v1plus.LCHSGeometry.cCylinders = pLCHSGeometry->cCylinders;
339 pImage->Header.u.v1plus.LCHSGeometry.cHeads = pLCHSGeometry->cHeads;
340 pImage->Header.u.v1plus.LCHSGeometry.cSectors = pLCHSGeometry->cSectors;
341 pImage->Header.u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
342
343 pImage->paBlocks = (PVDIIMAGEBLOCKPOINTER)RTMemAlloc(sizeof(VDIIMAGEBLOCKPOINTER) * getImageBlocks(&pImage->Header));
344 if (!pImage->paBlocks)
345 {
346 rc = VERR_NO_MEMORY;
347 goto out;
348 }
349
350 if (enmType != VD_IMAGE_TYPE_FIXED)
351 {
352 /* for growing images mark all blocks in paBlocks as free. */
353 for (unsigned i = 0; i < pImage->Header.u.v1.cBlocks; i++)
354 pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
355 }
356 else
357 {
358 /* for fixed images mark all blocks in paBlocks as allocated */
359 for (unsigned i = 0; i < pImage->Header.u.v1.cBlocks; i++)
360 pImage->paBlocks[i] = i;
361 pImage->Header.u.v1.cBlocksAllocated = pImage->Header.u.v1.cBlocks;
362 }
363
364 /* Setup image parameters. */
365 vdiSetupImageDesc(pImage);
366
367 /* create file */
368 rc = RTFileOpen(&File, pImage->pszFilename,
369 RTFILE_O_READWRITE | RTFILE_O_CREATE | RTFILE_O_DENY_ALL);
370 if (VBOX_FAILURE(rc))
371 {
372 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: cannot create image '%s'"), pImage->pszFilename);
373 goto out;
374 }
375
376 cbTotal = pImage->offStartData
377 + ((uint64_t)getImageBlocks(&pImage->Header) << pImage->uShiftIndex2Offset);
378
379 if (enmType == VD_IMAGE_TYPE_FIXED)
380 {
381 /* check the free space on the disk and leave early if there is not
382 * sufficient space available */
383 RTFOFF cbFree = 0;
384 rc = RTFsQuerySizes(pImage->pszFilename, NULL, &cbFree, NULL, NULL);
385 if (VBOX_SUCCESS(rc) /* ignore errors */ && ((uint64_t)cbFree < cbTotal))
386 {
387 rc = vdiError(pImage, VERR_DISK_FULL, RT_SRC_POS, N_("VDI: disk would overflow creating image '%s'"), pImage->pszFilename);
388 goto out;
389 }
390 }
391
392 if (enmType == VD_IMAGE_TYPE_FIXED)
393 {
394 /*
395 * Allocate & commit whole file if fixed image, it must be more
396 * effective than expanding file by write operations.
397 */
398 rc = RTFileSetSize(pImage->File, cbTotal);
399 }
400 else
401 {
402 /* Set file size to hold header and blocks array. */
403 rc = RTFileSetSize(pImage->File, pImage->offStartData);
404 }
405 if (VBOX_FAILURE(rc))
406 {
407 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: setting image size failed for '%s'"), pImage->pszFilename);
408 goto out;
409 }
410
411 /* Generate image last-modify uuid */
412 RTUuidCreate(getImageModificationUUID(&pImage->Header));
413
414 /* Write pre-header. */
415 rc = RTFileWriteAt(pImage->File, 0, &pImage->PreHeader, sizeof(pImage->PreHeader), NULL);
416 if (VBOX_FAILURE(rc))
417 {
418 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: writing pre-header failed for '%s'"), pImage->pszFilename);
419 goto out;
420 }
421
422 /* Write header. */
423 rc = RTFileWriteAt(pImage->File, sizeof(pImage->PreHeader), &pImage->Header.u.v1plus, sizeof(pImage->Header.u.v1plus), NULL);
424 if (VBOX_FAILURE(rc))
425 {
426 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: writing header failed for '%s'"), pImage->pszFilename);
427 goto out;
428 }
429
430 rc = RTFileWriteAt(pImage->File, pImage->offStartBlocks,
431 pImage->paBlocks,
432 getImageBlocks(&pImage->Header) * sizeof(VDIIMAGEBLOCKPOINTER),
433 NULL);
434 if (VBOX_FAILURE(rc))
435 {
436 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: writing block pointers failed for '%s'"), pImage->pszFilename);
437 goto out;
438 }
439
440 if (enmType == VD_IMAGE_TYPE_FIXED)
441 {
442 /* Fill image with zeroes. We do this for every fixed-size image since on some systems
443 * (for example Windows Vista), it takes ages to write a block near the end of a sparse
444 * file and the guest could complain about an ATA timeout. */
445
446 /** @todo Starting with Linux 2.6.23, there is an fallocate() system call.
447 * Currently supported file systems are ext4 and ocfs2. */
448
449 /* Allocate a temporary zero-filled buffer. Use a bigger block size to optimize writing */
450 const size_t cbBuf = 128 * _1K;
451 void *pvBuf = RTMemTmpAllocZ(cbBuf);
452 if (!pvBuf)
453 {
454 rc = VERR_NO_MEMORY;
455 goto out;
456 }
457
458 cbFill = (uint64_t)getImageBlocks(&pImage->Header) << pImage->uShiftIndex2Offset;
459 uOff = 0;
460 /* do loop to fill all image. */
461 while (uOff < cbFill)
462 {
463 unsigned cbChunk = (unsigned)RT_MIN(cbFill, cbBuf);
464
465 rc = RTFileWriteAt(pImage->File, pImage->offStartData + uOff,
466 pvBuf, cbChunk, NULL);
467 if (VBOX_FAILURE(rc))
468 {
469 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: writing block failed for '%s'"), pImage->pszFilename);
470 goto out;
471 }
472
473 uOff += cbChunk;
474
475 if (pfnProgress)
476 {
477 rc = pfnProgress(NULL /* WARNING! pVM=NULL */,
478 uPercentStart + uOff * uPercentSpan / cbFill,
479 pvUser);
480 if (VBOX_FAILURE(rc))
481 goto out;
482 }
483 }
484 RTMemTmpFree(pvBuf);
485 }
486
487out:
488 if (VBOX_SUCCESS(rc) && pfnProgress)
489 pfnProgress(NULL /* WARNING! pVM=NULL */,
490 uPercentStart + uPercentSpan, pvUser);
491
492 if (VBOX_FAILURE(rc))
493 vdiFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
494 return rc;
495}
496
497/**
498 * Internal: Open a VDI image.
499 */
500static int vdiOpenImage(PVDIIMAGEDESC pImage, unsigned uOpenFlags)
501{
502 int rc;
503 RTFILE File;
504
505 pImage->uOpenFlags = uOpenFlags;
506
507 /*
508 * Open the image.
509 */
510 rc = RTFileOpen(&File, pImage->pszFilename,
511 uOpenFlags & VD_OPEN_FLAGS_READONLY
512 ? RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE
513 : RTFILE_O_READWRITE | RTFILE_O_OPEN | RTFILE_O_DENY_NONE);
514 if (VBOX_FAILURE(rc))
515 {
516 /* Do NOT signal an appropriate error here, as the VD layer has the
517 * choice of retrying the open if it failed. */
518 goto out;
519 }
520 pImage->File = File;
521
522 /* Read pre-header. */
523 rc = RTFileReadAt(File, 0, &pImage->PreHeader, sizeof(pImage->PreHeader),
524 NULL);
525 if (VBOX_FAILURE(rc))
526 {
527 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: error reading pre-header in '%s'"), pImage->pszFilename);
528 goto out;
529 }
530 rc = vdiValidatePreHeader(&pImage->PreHeader);
531 if (VBOX_FAILURE(rc))
532 {
533 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: invalid pre-header in '%s'"), pImage->pszFilename);
534 goto out;
535 }
536
537 /* Read header. */
538 pImage->Header.uVersion = pImage->PreHeader.u32Version;
539 switch (GET_MAJOR_HEADER_VERSION(&pImage->Header))
540 {
541 case 0:
542 rc = RTFileReadAt(File, sizeof(pImage->PreHeader),
543 &pImage->Header.u.v0, sizeof(pImage->Header.u.v0),
544 NULL);
545 if (VBOX_FAILURE(rc))
546 {
547 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: error reading v0 header in '%s'"), pImage->pszFilename);
548 goto out;
549 }
550 break;
551 case 1:
552 rc = RTFileReadAt(File, sizeof(pImage->PreHeader),
553 &pImage->Header.u.v1, sizeof(pImage->Header.u.v1),
554 NULL);
555 if (VBOX_FAILURE(rc))
556 {
557 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: error reading v1 header in '%s'"), pImage->pszFilename);
558 goto out;
559 }
560 /* Convert VDI 1.1 images to VDI 1.1+ on open in read/write mode.
561 * Conversion is harmless, as any VirtualBox version supporting VDI
562 * 1.1 doesn't touch fields it doesn't know about. */
563 if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
564 && GET_MINOR_HEADER_VERSION(&pImage->Header) == 1
565 && pImage->Header.u.v1.cbHeader < sizeof(pImage->Header.u.v1plus))
566 {
567 pImage->Header.u.v1plus.cbHeader = sizeof(pImage->Header.u.v1plus);
568 /* Mark LCHS geometry not-calculated. */
569 pImage->Header.u.v1plus.LCHSGeometry.cCylinders = 0;
570 pImage->Header.u.v1plus.LCHSGeometry.cHeads = 0;
571 pImage->Header.u.v1plus.LCHSGeometry.cSectors = 0;
572 pImage->Header.u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
573 }
574 else if (pImage->Header.u.v1.cbHeader >= sizeof(pImage->Header.u.v1plus))
575 {
576 /* Read the actual VDI 1.1+ header completely. */
577 rc = RTFileReadAt(File, sizeof(pImage->PreHeader), &pImage->Header.u.v1plus, sizeof(pImage->Header.u.v1plus), NULL);
578 if (VBOX_FAILURE(rc))
579 {
580 rc = vdiError(pImage, rc, RT_SRC_POS, N_("VDI: error reading v1.1+ header in '%s'"), pImage->pszFilename);
581 goto out;
582 }
583 }
584 break;
585 default:
586 rc = vdiError(pImage, VERR_VDI_UNSUPPORTED_VERSION, RT_SRC_POS, N_("VDI: unsupported major version %u in '%s'"), GET_MAJOR_HEADER_VERSION(&pImage->Header), pImage->pszFilename);
587 goto out;
588 }
589
590 rc = vdiValidateHeader(&pImage->Header);
591 if (VBOX_FAILURE(rc))
592 {
593 rc = vdiError(pImage, VERR_VDI_UNSUPPORTED_VERSION, RT_SRC_POS, N_("VDI: invalid header in '%s'"), pImage->pszFilename);
594 goto out;
595 }
596
597 /* Setup image parameters by header. */
598 vdiSetupImageDesc(pImage);
599
600 /* Allocate memory for blocks array. */
601 pImage->paBlocks = (PVDIIMAGEBLOCKPOINTER)RTMemAlloc(sizeof(VDIIMAGEBLOCKPOINTER) * getImageBlocks(&pImage->Header));
602 if (!pImage->paBlocks)
603 {
604 rc = VERR_NO_MEMORY;
605 goto out;
606 }
607
608 /* Read blocks array. */
609 rc = RTFileReadAt(pImage->File, pImage->offStartBlocks, pImage->paBlocks,
610 getImageBlocks(&pImage->Header) * sizeof(VDIIMAGEBLOCKPOINTER),
611 NULL);
612
613out:
614 if (VBOX_FAILURE(rc))
615 vdiFreeImage(pImage, false);
616 return rc;
617}
618
619/**
620 * Internal: Save header to file.
621 */
622static int vdiUpdateHeader(PVDIIMAGEDESC pImage)
623{
624 int rc;
625 switch (GET_MAJOR_HEADER_VERSION(&pImage->Header))
626 {
627 case 0:
628 rc = RTFileWriteAt(pImage->File, sizeof(VDIPREHEADER), &pImage->Header.u.v0, sizeof(pImage->Header.u.v0), NULL);
629 break;
630 case 1:
631 if (pImage->Header.u.v1plus.cbHeader < sizeof(pImage->Header.u.v1plus))
632 rc = RTFileWriteAt(pImage->File, sizeof(VDIPREHEADER), &pImage->Header.u.v1, sizeof(pImage->Header.u.v1), NULL);
633 else
634 rc = RTFileWriteAt(pImage->File, sizeof(VDIPREHEADER), &pImage->Header.u.v1plus, sizeof(pImage->Header.u.v1plus), NULL);
635 break;
636 default:
637 rc = VERR_VDI_UNSUPPORTED_VERSION;
638 break;
639 }
640 AssertMsgRC(rc, ("vdiUpdateHeader failed, filename=\"%s\" rc=%Vrc\n", pImage->pszFilename, rc));
641 return rc;
642}
643
644/**
645 * Internal: Save block pointer to file, save header to file.
646 */
647static int vdiUpdateBlockInfo(PVDIIMAGEDESC pImage, unsigned uBlock)
648{
649 /* Update image header. */
650 int rc = vdiUpdateHeader(pImage);
651 if (VBOX_SUCCESS(rc))
652 {
653 /* write only one block pointer. */
654 rc = RTFileWriteAt(pImage->File,
655 pImage->offStartBlocks + uBlock * sizeof(VDIIMAGEBLOCKPOINTER),
656 &pImage->paBlocks[uBlock],
657 sizeof(VDIIMAGEBLOCKPOINTER),
658 NULL);
659 AssertMsgRC(rc, ("vdiUpdateBlockInfo failed to update block=%u, filename=\"%s\", rc=%Vrc\n",
660 uBlock, pImage->pszFilename, rc));
661 }
662 return rc;
663}
664
665/**
666 * Internal: Flush the image file to disk.
667 */
668static void vdiFlushImage(PVDIIMAGEDESC pImage)
669{
670 if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
671 {
672 /* Save header. */
673 int rc = vdiUpdateHeader(pImage);
674 AssertMsgRC(rc, ("vdiUpdateHeader() failed, filename=\"%s\", rc=%Vrc\n",
675 pImage->pszFilename, rc));
676 RTFileFlush(pImage->File);
677 }
678}
679
680/**
681 * Internal: Free all allocated space for representing an image, and optionally
682 * delete the image from disk.
683 */
684static void vdiFreeImage(PVDIIMAGEDESC pImage, bool fDelete)
685{
686 Assert(pImage);
687
688 vdiFlushImage(pImage);
689 if (pImage->File != NIL_RTFILE)
690 {
691 RTFileClose(pImage->File);
692 pImage->File = NIL_RTFILE;
693 }
694 if (pImage->paBlocks)
695 {
696 RTMemFree(pImage->paBlocks);
697 pImage->paBlocks = NULL;
698 }
699 if (fDelete && pImage->pszFilename)
700 RTFileDelete(pImage->pszFilename);
701}
702
703
704/** @copydoc VBOXHDDBACKEND::pfnCheckIfValid */
705static int vdiCheckIfValid(const char *pszFilename)
706{
707 LogFlowFunc(("pszFilename=\"%s\"\n", pszFilename));
708 int rc = VINF_SUCCESS;
709 PVDIIMAGEDESC pImage;
710
711 if ( !pszFilename
712 || !*pszFilename)
713 {
714 rc = VERR_INVALID_PARAMETER;
715 goto out;
716 }
717
718 pImage = (PVDIIMAGEDESC)RTMemAllocZ(sizeof(VDIIMAGEDESC));
719 if (!pImage)
720 {
721 rc = VERR_NO_MEMORY;
722 goto out;
723 }
724 pImage->pszFilename = pszFilename;
725
726 rc = vdiOpenImage(pImage, VD_OPEN_FLAGS_INFO | VD_OPEN_FLAGS_READONLY);
727 vdiFreeImage(pImage, false);
728
729out:
730 LogFlowFunc(("returns %Vrc\n", rc));
731 return rc;
732}
733
734/** @copydoc VBOXHDDBACKEND::pfnOpen */
735static int vdiOpen(const char *pszFilename, unsigned uOpenFlags,
736 PFNVDERROR pfnError, void *pvErrorUser,
737 void **ppBackendData)
738{
739 LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x ppBackendData=%#p\n", pszFilename, uOpenFlags, ppBackendData));
740 int rc;
741 PVDIIMAGEDESC pImage;
742
743 /* Check open flags. All valid flags are supported. */
744 if (uOpenFlags & ~VD_OPEN_FLAGS_MASK)
745 {
746 rc = VERR_INVALID_PARAMETER;
747 goto out;
748 }
749
750 /* Check remaining arguments. */
751 if ( !VALID_PTR(pszFilename)
752 || !*pszFilename)
753 {
754 rc = VERR_INVALID_PARAMETER;
755 goto out;
756 }
757
758 pImage = (PVDIIMAGEDESC)RTMemAllocZ(sizeof(VDIIMAGEDESC));
759 if (!pImage)
760 {
761 rc = VERR_NO_MEMORY;
762 goto out;
763 }
764 pImage->pszFilename = pszFilename;
765 pImage->paBlocks = NULL;
766 pImage->pfnError = pfnError;
767 pImage->pvErrorUser = pvErrorUser;
768
769 rc = vdiOpenImage(pImage, uOpenFlags);
770 if (VBOX_SUCCESS(rc))
771 *ppBackendData = pImage;
772
773out:
774 LogFlowFunc(("returns %Vrc (pBackendData=%#p)\n", rc, *ppBackendData));
775 return rc;
776}
777
778/** @copydoc VBOXHDDBACKEND::pfnCreate */
779static int vdiCreate(const char *pszFilename, VDIMAGETYPE enmType,
780 uint64_t cbSize, unsigned uImageFlags,
781 const char *pszComment,
782 PCPDMMEDIAGEOMETRY pPCHSGeometry,
783 PCPDMMEDIAGEOMETRY pLCHSGeometry,
784 unsigned uOpenFlags, PFNVMPROGRESS pfnProgress,
785 void *pvUser, unsigned uPercentStart,
786 unsigned uPercentSpan, PFNVDERROR pfnError,
787 void *pvErrorUser, void **ppBackendData)
788{
789 LogFlowFunc(("pszFilename=\"%s\" enmType=%d cbSize=%llu uImageFlags=%#x pszComment=\"%s\" pPCHSGeometry=%#p pLCHSGeometry=%#p uOpenFlags=%#x pfnProgress=%#p pvUser=%#p uPercentStart=%u uPercentSpan=%u pfnError=%#p pvErrorUser=%#p ppBackendData=%#p", pszFilename, enmType, cbSize, uImageFlags, pszComment, pPCHSGeometry, pLCHSGeometry, uOpenFlags, pfnProgress, pvUser, uPercentStart, uPercentSpan, pfnError, pvErrorUser, ppBackendData));
790 int rc;
791 PVDIIMAGEDESC pImage;
792
793 /* Check open flags. All valid flags are supported. */
794 if (uOpenFlags & ~VD_OPEN_FLAGS_MASK)
795 {
796 rc = VERR_INVALID_PARAMETER;
797 goto out;
798 }
799
800 /* Check remaining arguments. */
801 if ( !pszFilename
802 || !*pszFilename
803 || (enmType != VD_IMAGE_TYPE_NORMAL && enmType != VD_IMAGE_TYPE_FIXED)
804 || cbSize < VDI_IMAGE_DEFAULT_BLOCK_SIZE
805 || !VALID_PTR(pPCHSGeometry)
806 || !VALID_PTR(pLCHSGeometry))
807 {
808 rc = VERR_INVALID_PARAMETER;
809 goto out;
810 }
811
812 pImage = (PVDIIMAGEDESC)RTMemAllocZ(sizeof(VDIIMAGEDESC));
813 if (!pImage)
814 {
815 rc = VERR_NO_MEMORY;
816 goto out;
817 }
818 pImage->pszFilename = pszFilename;
819 pImage->paBlocks = NULL;
820 pImage->pfnError = pfnError;
821 pImage->pvErrorUser = pvErrorUser;
822
823 rc = vdiCreateImage(pImage, enmType, cbSize, uImageFlags, pszComment,
824 pPCHSGeometry, pLCHSGeometry,
825 pfnProgress, pvUser, uPercentStart, uPercentSpan);
826 if (VBOX_SUCCESS(rc))
827 {
828 /* So far the image is opened in read/write mode. Make sure the
829 * image is opened in read-only mode if the caller requested that. */
830 if (uOpenFlags & VD_OPEN_FLAGS_READONLY)
831 {
832 vdiFreeImage(pImage, false);
833 rc = vdiOpenImage(pImage, uOpenFlags);
834 if (VBOX_FAILURE(rc))
835 goto out;
836 }
837 *ppBackendData = pImage;
838 }
839
840out:
841 LogFlowFunc(("returns %Vrc (pBackendData=%#p)\n", rc, *ppBackendData));
842 return rc;
843}
844
845/** @copydoc VBOXHDDBACKEND::pfnRename */
846static int vdiRename(void *pBackendData, const char *pszFilename)
847{
848 LogFlowFunc(("pBackendData=%#p pszFilename=%#p\n", pBackendData, pszFilename));
849 int rc = VERR_NOT_IMPLEMENTED;
850
851 LogFlowFunc(("returns %Vrc\n", rc));
852 return rc;
853}
854
855/** @copydoc VBOXHDDBACKEND::pfnClose */
856static int vdiClose(void *pBackendData, bool fDelete)
857{
858 LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete));
859 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
860 int rc = VINF_SUCCESS;
861
862 /* Freeing a never allocated image (e.g. because the open failed) is
863 * not signalled as an error. After all nothing bad happens. */
864 if (pImage)
865 vdiFreeImage(pImage, fDelete);
866
867 LogFlowFunc(("returns %Vrc\n", rc));
868 return rc;
869}
870
871/** @copydoc VBOXHDDBACKEND::pfnRead */
872static int vdiRead(void *pBackendData, uint64_t uOffset, void *pvBuf,
873 size_t cbToRead, size_t *pcbActuallyRead)
874{
875 LogFlowFunc(("pBackendData=%#p uOffset=%llu pvBuf=%#p cbToRead=%zu pcbActuallyRead=%#p\n", pBackendData, uOffset, pvBuf, cbToRead, pcbActuallyRead));
876 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
877 unsigned uBlock;
878 unsigned offRead;
879 int rc;
880
881 Assert(pImage);
882 Assert(uOffset % 512 == 0);
883 Assert(cbToRead % 512 == 0);
884
885 if ( uOffset + cbToRead > getImageDiskSize(&pImage->Header)
886 || cbToRead == 0)
887 {
888 rc = VERR_INVALID_PARAMETER;
889 goto out;
890 }
891
892 /* Calculate starting block number and offset inside it. */
893 uBlock = (unsigned)(uOffset >> pImage->uShiftOffset2Index);
894 offRead = (unsigned)uOffset & pImage->uBlockMask;
895
896 /* Clip read range to at most the rest of the block. */
897 cbToRead = RT_MIN(cbToRead, getImageBlockSize(&pImage->Header) - offRead);
898 Assert(!(cbToRead % 512));
899
900 if (pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_FREE)
901 rc = VERR_VDI_BLOCK_FREE;
902 else if (pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_ZERO)
903 {
904 memset(pvBuf, 0, cbToRead);
905 rc = VINF_SUCCESS;
906 }
907 else
908 {
909 /* block present in image file */
910 uint64_t u64Offset = ((uint64_t)pImage->paBlocks[uBlock] << pImage->uShiftIndex2Offset)
911 + (pImage->offStartData + pImage->offStartBlockData + offRead);
912 rc = RTFileReadAt(pImage->File, u64Offset, pvBuf, cbToRead, NULL);
913 }
914
915 if (VBOX_SUCCESS(rc))
916 *pcbActuallyRead = cbToRead;
917
918out:
919 LogFlowFunc(("returns %Vrc\n", rc));
920 return rc;
921}
922
923/**@copydoc VBOXHDDBACKEND::pfnWrite */
924static int vdiWrite(void *pBackendData, uint64_t uOffset, const void *pvBuf,
925 size_t cbToWrite, size_t *pcbWriteProcess,
926 size_t *pcbPreRead, size_t *pcbPostRead)
927{
928 LogFlowFunc(("pBackendData=%#p uOffset=%llu pvBuf=%#p cbToWrite=%zu pcbWriteProcess=%#p pcbPreRead=%#p pcbPostRead=%#p\n", pBackendData, uOffset, pvBuf, cbToWrite, pcbWriteProcess, pcbPreRead, pcbPostRead));
929 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
930 unsigned uBlock;
931 unsigned offWrite;
932 int rc = VINF_SUCCESS;
933
934 Assert(pImage);
935 Assert(uOffset % 512 == 0);
936 Assert(cbToWrite % 512 == 0);
937
938 if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
939 {
940 rc = VERR_VDI_IMAGE_READ_ONLY;
941 goto out;
942 }
943
944 if (cbToWrite == 0)
945 {
946 rc = VERR_INVALID_PARAMETER;
947 goto out;
948 }
949
950 /* No size check here, will do that later. For dynamic images which are
951 * not multiples of the block size in length, this would prevent writing to
952 * the last grain. */
953
954 /* Calculate starting block number and offset inside it. */
955 uBlock = (unsigned)(uOffset >> pImage->uShiftOffset2Index);
956 offWrite = (unsigned)uOffset & pImage->uBlockMask;
957
958 /* Clip write range to at most the rest of the block. */
959 cbToWrite = RT_MIN(cbToWrite, getImageBlockSize(&pImage->Header) - offWrite);
960 Assert(!(cbToWrite % 512));
961
962 if (!IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[uBlock]))
963 {
964 /* Block is either free or zero. */
965 if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_HONOR_ZEROES)
966 && ( pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_ZERO
967 || cbToWrite == getImageBlockSize(&pImage->Header)))
968 {
969 /* If the destination block is unallocated at this point, it's
970 * either a zero block or a block which hasn't been used so far
971 * (which also means that it's a zero block. Don't need to write
972 * anything to this block if the data consists of just zeroes. */
973 Assert(cbToWrite % 4 == 0);
974 Assert(cbToWrite * 8 <= UINT32_MAX);
975 if (ASMBitFirstSet((volatile void *)pvBuf, (uint32_t)cbToWrite * 8) == -1)
976 {
977 pImage->paBlocks[uBlock] = VDI_IMAGE_BLOCK_ZERO;
978 goto out;
979 }
980 }
981
982 if (cbToWrite == getImageBlockSize(&pImage->Header))
983 {
984 /* Full block write to previously unallocated block.
985 * Allocate block and write data. */
986 unsigned cBlocksAllocated = getImageBlocksAllocated(&pImage->Header);
987 rc = RTFileWriteAt(pImage->File,
988 ((uint64_t)cBlocksAllocated << pImage->uShiftIndex2Offset)
989 + pImage->offStartData,
990 pvBuf, cbToWrite, NULL);
991 if (VBOX_FAILURE(rc))
992 goto out;
993 pImage->paBlocks[uBlock] = cBlocksAllocated;
994 setImageBlocksAllocated(&pImage->Header, cBlocksAllocated + 1);
995
996 rc = vdiUpdateBlockInfo(pImage, uBlock);
997 if (VBOX_FAILURE(rc))
998 goto out;
999
1000 *pcbPreRead = 0;
1001 *pcbPostRead = 0;
1002 }
1003 else
1004 {
1005 /* Trying to do a partial write to an unallocated block. Don't do
1006 * anything except letting the upper layer know what to do. */
1007 *pcbPreRead = offWrite % getImageBlockSize(&pImage->Header);
1008 *pcbPostRead = getImageBlockSize(&pImage->Header) - cbToWrite - *pcbPreRead;
1009 rc = VERR_VDI_BLOCK_FREE;
1010 }
1011 }
1012 else
1013 rc = RTFileWriteAt(pImage->File,
1014 ((uint64_t)pImage->paBlocks[uBlock] << pImage->uShiftIndex2Offset)
1015 + pImage->offStartData + pImage->offStartBlockData + offWrite,
1016 pvBuf, cbToWrite, NULL);
1017
1018out:
1019 LogFlowFunc(("returns %Vrc\n", rc));
1020 return rc;
1021}
1022
1023/** @copydoc VBOXHDDBACKEND::pfnFlush */
1024static int vdiFlush(void *pBackendData)
1025{
1026 LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1027 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1028 int rc = VINF_SUCCESS;
1029
1030 vdiFlushImage(pImage);
1031 LogFlowFunc(("returns %Vrc\n", rc));
1032 return rc;
1033}
1034
1035/** @copydoc VBOXHDDBACKEND::pfnGetVersion */
1036static unsigned vdiGetVersion(void *pBackendData)
1037{
1038 LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1039 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1040 unsigned uVersion;
1041
1042 Assert(pImage);
1043
1044 if (pImage)
1045 uVersion = pImage->PreHeader.u32Version;
1046 else
1047 uVersion = 0;
1048
1049 LogFlowFunc(("returns %#x\n", uVersion));
1050 return uVersion;
1051}
1052
1053/** @copydoc VBOXHDDBACKEND::pfnGetImageType */
1054static int vdiGetImageType(void *pBackendData, PVDIMAGETYPE penmImageType)
1055{
1056 LogFlowFunc(("pBackendData=%#p penmImageType=%#p\n", pBackendData, penmImageType));
1057 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1058 int rc = VINF_SUCCESS;
1059
1060 Assert(pImage);
1061 Assert(penmImageType);
1062
1063 if (pImage)
1064 *penmImageType = getImageType(&pImage->Header) == VDI_IMAGE_TYPE_NORMAL
1065 ? VD_IMAGE_TYPE_NORMAL
1066 : VD_IMAGE_TYPE_DIFF;
1067 else
1068 rc = VERR_VDI_NOT_OPENED;
1069
1070 LogFlowFunc(("returns %Vrc enmImageType=%u\n", rc, *penmImageType));
1071 return rc;
1072}
1073
1074/** @copydoc VBOXHDDBACKEND::pfnGetSize */
1075static uint64_t vdiGetSize(void *pBackendData)
1076{
1077 LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1078 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1079 uint64_t cbSize;
1080
1081 Assert(pImage);
1082
1083 if (pImage)
1084 cbSize = getImageDiskSize(&pImage->Header);
1085 else
1086 cbSize = 0;
1087
1088 LogFlowFunc(("returns %llu\n", cbSize));
1089 return cbSize;
1090}
1091
1092/** @copydoc VBOXHDDBACKEND::pfnGetFileSize */
1093static uint64_t vdiGetFileSize(void *pBackendData)
1094{
1095 LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1096 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1097 uint64_t cb = 0;
1098
1099 Assert(pImage);
1100
1101 if (pImage)
1102 {
1103 uint64_t cbFile;
1104 if (pImage->File != NIL_RTFILE)
1105 {
1106 int rc = RTFileGetSize(pImage->File, &cbFile);
1107 if (VBOX_SUCCESS(rc))
1108 cb += cbFile;
1109 }
1110 }
1111
1112 LogFlowFunc(("returns %lld\n", cb));
1113 return cb;
1114}
1115
1116/** @copydoc VBOXHDDBACKEND::pfnGetPCHSGeometry */
1117static int vdiGetPCHSGeometry(void *pBackendData,
1118 PPDMMEDIAGEOMETRY pPCHSGeometry)
1119{
1120 LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry));
1121 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1122 int rc;
1123
1124 Assert(pImage);
1125
1126 if (pImage)
1127 {
1128 if (pImage->PCHSGeometry.cCylinders)
1129 {
1130 *pPCHSGeometry = pImage->PCHSGeometry;
1131 rc = VINF_SUCCESS;
1132 }
1133 else
1134 rc = VERR_VDI_GEOMETRY_NOT_SET;
1135 }
1136 else
1137 rc = VERR_VDI_NOT_OPENED;
1138
1139 LogFlowFunc(("returns %Vrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
1140 return rc;
1141}
1142
1143/** @copydoc VBOXHDDBACKEND::pfnSetPCHSGeometry */
1144static int vdiSetPCHSGeometry(void *pBackendData,
1145 PCPDMMEDIAGEOMETRY pPCHSGeometry)
1146{
1147 LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n", pBackendData, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
1148 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1149 int rc;
1150
1151 Assert(pImage);
1152
1153 if (pImage)
1154 {
1155 if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1156 {
1157 rc = VERR_VDI_IMAGE_READ_ONLY;
1158 goto out;
1159 }
1160
1161 pImage->PCHSGeometry = *pPCHSGeometry;
1162 rc = VINF_SUCCESS;
1163 }
1164 else
1165 rc = VERR_VDI_NOT_OPENED;
1166
1167out:
1168 LogFlowFunc(("returns %Vrc\n", rc));
1169 return rc;
1170}
1171
1172/** @copydoc VBOXHDDBACKEND::pfnGetLCHSGeometry */
1173static int vdiGetLCHSGeometry(void *pBackendData,
1174 PPDMMEDIAGEOMETRY pLCHSGeometry)
1175{
1176 LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry));
1177 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1178 int rc;
1179
1180 Assert(pImage);
1181
1182 if (pImage)
1183 {
1184 VDIDISKGEOMETRY DummyGeo = { 0, 0, 0, VDI_GEOMETRY_SECTOR_SIZE };
1185 PVDIDISKGEOMETRY pGeometry = getImageLCHSGeometry(&pImage->Header);
1186 if (!pGeometry)
1187 pGeometry = &DummyGeo;
1188
1189 if ( pGeometry->cCylinders > 0
1190 && pGeometry->cHeads > 0
1191 && pGeometry->cSectors > 0)
1192 {
1193 pLCHSGeometry->cCylinders = pGeometry->cCylinders;
1194 pLCHSGeometry->cHeads = pGeometry->cHeads;
1195 pLCHSGeometry->cSectors = pGeometry->cSectors;
1196 rc = VINF_SUCCESS;
1197 }
1198 else
1199 rc = VERR_VDI_GEOMETRY_NOT_SET;
1200 }
1201 else
1202 rc = VERR_VDI_NOT_OPENED;
1203
1204 LogFlowFunc(("returns %Vrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
1205 return rc;
1206}
1207
1208/** @copydoc VBOXHDDBACKEND::pfnSetLCHSGeometry */
1209static int vdiSetLCHSGeometry(void *pBackendData,
1210 PCPDMMEDIAGEOMETRY pLCHSGeometry)
1211{
1212 LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n", pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
1213 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1214 PVDIDISKGEOMETRY pGeometry;
1215 int rc;
1216
1217 Assert(pImage);
1218
1219 if (pImage)
1220 {
1221 if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1222 {
1223 rc = VERR_VDI_IMAGE_READ_ONLY;
1224 goto out;
1225 }
1226
1227 pGeometry = getImageLCHSGeometry(&pImage->Header);
1228 if (pGeometry)
1229 {
1230 pGeometry->cCylinders = pLCHSGeometry->cCylinders;
1231 pGeometry->cHeads = pLCHSGeometry->cHeads;
1232 pGeometry->cSectors = pLCHSGeometry->cSectors;
1233 pGeometry->cbSector = VDI_GEOMETRY_SECTOR_SIZE;
1234
1235 /* Update header information in base image file. */
1236 vdiFlushImage(pImage);
1237 }
1238 rc = VINF_SUCCESS;
1239 }
1240 else
1241 rc = VERR_VDI_NOT_OPENED;
1242
1243out:
1244 LogFlowFunc(("returns %Vrc\n", rc));
1245 return rc;
1246}
1247
1248/** @copydoc VBOXHDDBACKEND::pfnGetImageFlags */
1249static unsigned vdiGetImageFlags(void *pBackendData)
1250{
1251 LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1252 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1253 unsigned uImageFlags;
1254
1255 Assert(pImage);
1256
1257 if (pImage)
1258 uImageFlags = getImageFlags(&pImage->Header);
1259 else
1260 uImageFlags = 0;
1261
1262 LogFlowFunc(("returns %#x\n", uImageFlags));
1263 return uImageFlags;
1264}
1265
1266/** @copydoc VBOXHDDBACKEND::pfnGetOpenFlags */
1267static unsigned vdiGetOpenFlags(void *pBackendData)
1268{
1269 LogFlowFunc(("pBackendData=%#p\n", pBackendData));
1270 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1271 unsigned uOpenFlags;
1272
1273 Assert(pImage);
1274
1275 if (pImage)
1276 uOpenFlags = pImage->uOpenFlags;
1277 else
1278 uOpenFlags = 0;
1279
1280 LogFlowFunc(("returns %#x\n", uOpenFlags));
1281 return uOpenFlags;
1282}
1283
1284/** @copydoc VBOXHDDBACKEND::pfnSetOpenFlags */
1285static int vdiSetOpenFlags(void *pBackendData, unsigned uOpenFlags)
1286{
1287 LogFlowFunc(("pBackendData=%#p\n uOpenFlags=%#x", pBackendData, uOpenFlags));
1288 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1289 int rc;
1290 const char *pszFilename;
1291
1292 /* Image must be opened and the new flags must be valid. Just readonly flag
1293 * is supported. */
1294 if (!pImage || uOpenFlags & ~VD_OPEN_FLAGS_READONLY)
1295 {
1296 rc = VERR_INVALID_PARAMETER;
1297 goto out;
1298 }
1299
1300 /* Implement this operation via reopening the image. */
1301 pszFilename = pImage->pszFilename;
1302 vdiFreeImage(pImage, false);
1303 rc = vdiOpenImage(pImage, uOpenFlags);
1304
1305out:
1306 LogFlowFunc(("returns %Vrc\n", rc));
1307 return rc;
1308}
1309
1310/** @copydoc VBOXHDDBACKEND::pfnGetComment */
1311static int vdiGetComment(void *pBackendData, char *pszComment,
1312 size_t cbComment)
1313{
1314 LogFlowFunc(("pBackendData=%#p pszComment=%#p cbComment=%zu\n", pBackendData, pszComment, cbComment));
1315 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1316 int rc = VINF_SUCCESS;
1317
1318 Assert(pImage);
1319
1320 if (pImage)
1321 {
1322 char *pszTmp = getImageComment(&pImage->Header);
1323 unsigned cb = strlen(pszTmp);
1324 if (cb < cbComment)
1325 {
1326 /* memcpy is much better than strncpy. */
1327 memcpy(pszComment, pszTmp, cb + 1);
1328 }
1329 else
1330 rc = VERR_BUFFER_OVERFLOW;
1331 }
1332 else
1333 rc = VERR_VDI_NOT_OPENED;
1334
1335 LogFlowFunc(("returns %Vrc comment=\"%s\"\n", rc, pszComment));
1336 return rc;
1337}
1338
1339/** @copydoc VBOXHDDBACKEND::pfnGetComment */
1340static int vdiSetComment(void *pBackendData, const char *pszComment)
1341{
1342 LogFlowFunc(("pBackendData=%#p pszComment=\"%s\"\n", pBackendData, pszComment));
1343 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1344 int rc;
1345
1346 Assert(pImage);
1347
1348 if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
1349 {
1350 rc = VERR_VDI_IMAGE_READ_ONLY;
1351 goto out;
1352 }
1353
1354 if (pImage)
1355 {
1356 size_t cchComment = pszComment ? strlen(pszComment) : 0;
1357 if (cchComment >= VDI_IMAGE_COMMENT_SIZE)
1358 {
1359 LogFunc(("pszComment is too long, %d bytes!\n", cchComment));
1360 rc = VERR_VDI_COMMENT_TOO_LONG;
1361 goto out;
1362 }
1363
1364 /* we don't support old style images */
1365 if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
1366 {
1367 /*
1368 * Update the comment field, making sure to zero out all of the previous comment.
1369 */
1370 memset(pImage->Header.u.v1.szComment, '\0', VDI_IMAGE_COMMENT_SIZE);
1371 memcpy(pImage->Header.u.v1.szComment, pszComment, cchComment);
1372
1373 /* write out new the header */
1374 rc = vdiUpdateHeader(pImage);
1375 }
1376 else
1377 rc = VERR_VDI_UNSUPPORTED_VERSION;
1378 }
1379 else
1380 rc = VERR_VDI_NOT_OPENED;
1381
1382out:
1383 LogFlowFunc(("returns %Vrc\n", rc));
1384 return rc;
1385}
1386
1387/** @copydoc VBOXHDDBACKEND::pfnGetUuid */
1388static int vdiGetUuid(void *pBackendData, PRTUUID pUuid)
1389{
1390 LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
1391 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1392 int rc;
1393
1394 Assert(pImage);
1395
1396 if (pImage)
1397 {
1398 *pUuid = *getImageCreationUUID(&pImage->Header);
1399 rc = VINF_SUCCESS;
1400 }
1401 else
1402 rc = VERR_VDI_NOT_OPENED;
1403
1404 LogFlowFunc(("returns %Vrc (%Vuuid)\n", rc, pUuid));
1405 return rc;
1406}
1407
1408/** @copydoc VBOXHDDBACKEND::pfnSetUuid */
1409static int vdiSetUuid(void *pBackendData, PCRTUUID pUuid)
1410{
1411 LogFlowFunc(("pBackendData=%#p Uuid=%Vuuid\n", pBackendData, pUuid));
1412 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1413 int rc = VINF_SUCCESS;
1414
1415 Assert(pImage);
1416
1417 if (pImage)
1418 {
1419 if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
1420 {
1421 if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
1422 pImage->Header.u.v1.uuidCreate = *pUuid;
1423 /* Make it possible to clone old VDIs. */
1424 else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
1425 pImage->Header.u.v0.uuidCreate = *pUuid;
1426 else
1427 {
1428 LogFunc(("Version is not supported!\n"));
1429 rc = VERR_VDI_UNSUPPORTED_VERSION;
1430 }
1431 }
1432 else
1433 rc = VERR_VDI_IMAGE_READ_ONLY;
1434 }
1435 else
1436 rc = VERR_VDI_NOT_OPENED;
1437
1438 LogFlowFunc(("returns %Vrc\n", rc));
1439 return rc;
1440}
1441
1442/** @copydoc VBOXHDDBACKEND::pfnGetModificationUuid */
1443static int vdiGetModificationUuid(void *pBackendData, PRTUUID pUuid)
1444{
1445 LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
1446 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1447 int rc;
1448
1449 Assert(pImage);
1450
1451 if (pImage)
1452 {
1453 *pUuid = *getImageModificationUUID(&pImage->Header);
1454 rc = VINF_SUCCESS;
1455 }
1456 else
1457 rc = VERR_VDI_NOT_OPENED;
1458
1459 LogFlowFunc(("returns %Vrc (%Vuuid)\n", rc, pUuid));
1460 return rc;
1461}
1462
1463/** @copydoc VBOXHDDBACKEND::pfnSetModificationUuid */
1464static int vdiSetModificationUuid(void *pBackendData, PCRTUUID pUuid)
1465{
1466 LogFlowFunc(("pBackendData=%#p Uuid=%Vuuid\n", pBackendData, pUuid));
1467 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1468 int rc = VINF_SUCCESS;
1469
1470 Assert(pImage);
1471
1472 if (pImage)
1473 {
1474 if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
1475 {
1476 if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
1477 pImage->Header.u.v1.uuidModify = *pUuid;
1478 /* Make it possible to clone old VDIs. */
1479 else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
1480 pImage->Header.u.v0.uuidModify = *pUuid;
1481 else
1482 {
1483 LogFunc(("Version is not supported!\n"));
1484 rc = VERR_VDI_UNSUPPORTED_VERSION;
1485 }
1486 }
1487 else
1488 rc = VERR_VDI_IMAGE_READ_ONLY;
1489 }
1490 else
1491 rc = VERR_VDI_NOT_OPENED;
1492
1493 LogFlowFunc(("returns %Vrc\n", rc));
1494 return rc;
1495}
1496
1497/** @copydoc VBOXHDDBACKEND::pfnGetParentUuid */
1498static int vdiGetParentUuid(void *pBackendData, PRTUUID pUuid)
1499{
1500 LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
1501 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1502 int rc;
1503
1504 Assert(pImage);
1505
1506 if (pImage)
1507 {
1508 *pUuid = *getImageParentUUID(&pImage->Header);
1509 rc = VINF_SUCCESS;
1510 }
1511 else
1512 rc = VERR_VDI_NOT_OPENED;
1513
1514 LogFlowFunc(("returns %Vrc (%Vuuid)\n", rc, pUuid));
1515 return rc;
1516}
1517
1518/** @copydoc VBOXHDDBACKEND::pfnSetParentUuid */
1519static int vdiSetParentUuid(void *pBackendData, PCRTUUID pUuid)
1520{
1521 LogFlowFunc(("pBackendData=%#p Uuid=%Vuuid\n", pBackendData, pUuid));
1522 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1523 int rc = VINF_SUCCESS;
1524
1525 Assert(pImage);
1526
1527 if (pImage)
1528 {
1529 if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
1530 {
1531 if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
1532 pImage->Header.u.v1.uuidLinkage = *pUuid;
1533 /* Make it possible to clone old VDIs. */
1534 else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
1535 pImage->Header.u.v0.uuidLinkage = *pUuid;
1536 else
1537 {
1538 LogFunc(("Version is not supported!\n"));
1539 rc = VERR_VDI_UNSUPPORTED_VERSION;
1540 }
1541 }
1542 else
1543 rc = VERR_VDI_IMAGE_READ_ONLY;
1544 }
1545 else
1546 rc = VERR_VDI_NOT_OPENED;
1547
1548 LogFlowFunc(("returns %Vrc\n", rc));
1549 return rc;
1550}
1551
1552/** @copydoc VBOXHDDBACKEND::pfnGetParentModificationUuid */
1553static int vdiGetParentModificationUuid(void *pBackendData, PRTUUID pUuid)
1554{
1555 LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
1556 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1557 int rc;
1558
1559 Assert(pImage);
1560
1561 if (pImage)
1562 {
1563 *pUuid = *getImageParentModificationUUID(&pImage->Header);
1564 rc = VINF_SUCCESS;
1565 }
1566 else
1567 rc = VERR_VDI_NOT_OPENED;
1568
1569 LogFlowFunc(("returns %Vrc (%Vuuid)\n", rc, pUuid));
1570 return rc;
1571}
1572
1573/** @copydoc VBOXHDDBACKEND::pfnSetParentModificationUuid */
1574static int vdiSetParentModificationUuid(void *pBackendData, PCRTUUID pUuid)
1575{
1576 LogFlowFunc(("pBackendData=%#p Uuid=%Vuuid\n", pBackendData, pUuid));
1577 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1578 int rc = VINF_SUCCESS;
1579
1580 Assert(pImage);
1581
1582 if (pImage)
1583 {
1584 if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
1585 {
1586 if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
1587 pImage->Header.u.v1.uuidParentModify = *pUuid;
1588 else
1589 {
1590 LogFunc(("Version is not supported!\n"));
1591 rc = VERR_VDI_UNSUPPORTED_VERSION;
1592 }
1593 }
1594 else
1595 rc = VERR_VDI_IMAGE_READ_ONLY;
1596 }
1597 else
1598 rc = VERR_VDI_NOT_OPENED;
1599
1600 LogFlowFunc(("returns %Vrc\n", rc));
1601 return rc;
1602}
1603
1604/** @copydoc VBOXHDDBACKEND::pfnDump */
1605static void vdiDump(void *pBackendData)
1606{
1607 PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
1608
1609 RTLogPrintf("Dumping VDI image \"%s\" mode=%s uOpenFlags=%X File=%08X\n",
1610 pImage->pszFilename,
1611 (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY) ? "r/o" : "r/w",
1612 pImage->uOpenFlags,
1613 pImage->File);
1614 RTLogPrintf("Header: Version=%08X Type=%X Flags=%X Size=%llu\n",
1615 pImage->PreHeader.u32Version,
1616 getImageType(&pImage->Header),
1617 getImageFlags(&pImage->Header),
1618 getImageDiskSize(&pImage->Header));
1619 RTLogPrintf("Header: cbBlock=%u cbBlockExtra=%u cBlocks=%u cBlocksAllocated=%u\n",
1620 getImageBlockSize(&pImage->Header),
1621 getImageExtraBlockSize(&pImage->Header),
1622 getImageBlocks(&pImage->Header),
1623 getImageBlocksAllocated(&pImage->Header));
1624 RTLogPrintf("Header: offBlocks=%u offData=%u\n",
1625 getImageBlocksOffset(&pImage->Header),
1626 getImageDataOffset(&pImage->Header));
1627 PVDIDISKGEOMETRY pg = getImageLCHSGeometry(&pImage->Header);
1628 if (pg)
1629 RTLogPrintf("Header: Geometry: C/H/S=%u/%u/%u cbSector=%u\n",
1630 pg->cCylinders, pg->cHeads, pg->cSectors, pg->cbSector);
1631 RTLogPrintf("Header: uuidCreation={%Vuuid}\n", getImageCreationUUID(&pImage->Header));
1632 RTLogPrintf("Header: uuidModification={%Vuuid}\n", getImageModificationUUID(&pImage->Header));
1633 RTLogPrintf("Header: uuidParent={%Vuuid}\n", getImageParentUUID(&pImage->Header));
1634 if (GET_MAJOR_HEADER_VERSION(&pImage->Header) >= 1)
1635 RTLogPrintf("Header: uuidParentModification={%Vuuid}\n", getImageParentModificationUUID(&pImage->Header));
1636 RTLogPrintf("Image: fFlags=%08X offStartBlocks=%u offStartData=%u\n",
1637 pImage->uImageFlags, pImage->offStartBlocks, pImage->offStartData);
1638 RTLogPrintf("Image: uBlockMask=%08X uShiftIndex2Offset=%u uShiftOffset2Index=%u offStartBlockData=%u\n",
1639 pImage->uBlockMask,
1640 pImage->uShiftIndex2Offset,
1641 pImage->uShiftOffset2Index,
1642 pImage->offStartBlockData);
1643
1644 unsigned uBlock, cBlocksNotFree, cBadBlocks, cBlocks = getImageBlocks(&pImage->Header);
1645 for (uBlock=0, cBlocksNotFree=0, cBadBlocks=0; uBlock<cBlocks; uBlock++)
1646 {
1647 if (IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[uBlock]))
1648 {
1649 cBlocksNotFree++;
1650 if (pImage->paBlocks[uBlock] >= cBlocks)
1651 cBadBlocks++;
1652 }
1653 }
1654 if (cBlocksNotFree != getImageBlocksAllocated(&pImage->Header))
1655 {
1656 RTLogPrintf("!! WARNING: %u blocks actually allocated (cBlocksAllocated=%u) !!\n",
1657 cBlocksNotFree, getImageBlocksAllocated(&pImage->Header));
1658 }
1659 if (cBadBlocks)
1660 {
1661 RTLogPrintf("!! WARNING: %u bad blocks found !!\n",
1662 cBadBlocks);
1663 }
1664}
1665
1666VBOXHDDBACKEND g_VDIBackend =
1667{
1668 /* pszBackendName */
1669 "VDI",
1670 /* cbSize */
1671 sizeof(VBOXHDDBACKEND),
1672 /* pfnCheckIfValid */
1673 vdiCheckIfValid,
1674 /* pfnOpen */
1675 vdiOpen,
1676 /* pfnCreate */
1677 vdiCreate,
1678 /* pfnRename */
1679 vdiRename,
1680 /* pfnClose */
1681 vdiClose,
1682 /* pfnRead */
1683 vdiRead,
1684 /* pfnWrite */
1685 vdiWrite,
1686 /* pfnFlush */
1687 vdiFlush,
1688 /* pfnGetVersion */
1689 vdiGetVersion,
1690 /* pfnGetImageType */
1691 vdiGetImageType,
1692 /* pfnGetSize */
1693 vdiGetSize,
1694 /* pfnGetFileSize */
1695 vdiGetFileSize,
1696 /* pfnGetPCHSGeometry */
1697 vdiGetPCHSGeometry,
1698 /* pfnSetPCHSGeometry */
1699 vdiSetPCHSGeometry,
1700 /* pfnGetLCHSGeometry */
1701 vdiGetLCHSGeometry,
1702 /* pfnSetLCHSGeometry */
1703 vdiSetLCHSGeometry,
1704 /* pfnGetImageFlags */
1705 vdiGetImageFlags,
1706 /* pfnGetOpenFlags */
1707 vdiGetOpenFlags,
1708 /* pfnSetOpenFlags */
1709 vdiSetOpenFlags,
1710 /* pfnGetComment */
1711 vdiGetComment,
1712 /* pfnSetComment */
1713 vdiSetComment,
1714 /* pfnGetUuid */
1715 vdiGetUuid,
1716 /* pfnSetUuid */
1717 vdiSetUuid,
1718 /* pfnGetModificationUuid */
1719 vdiGetModificationUuid,
1720 /* pfnSetModificationUuid */
1721 vdiSetModificationUuid,
1722 /* pfnGetParentUuid */
1723 vdiGetParentUuid,
1724 /* pfnSetParentUuid */
1725 vdiSetParentUuid,
1726 /* pfnGetParentModificationUuid */
1727 vdiGetParentModificationUuid,
1728 /* pfnSetParentModificationUuid */
1729 vdiSetParentModificationUuid,
1730 /* pfnDump */
1731 vdiDump
1732};
1733
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