1 | /* $Id: VDI.cpp 66486 2017-04-10 07:23:59Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * Virtual Disk Image (VDI), Core Code.
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2016 Oracle Corporation
|
---|
8 | *
|
---|
9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
---|
10 | * available from http://www.virtualbox.org. This file is free software;
|
---|
11 | * you can redistribute it and/or modify it under the terms of the GNU
|
---|
12 | * General Public License (GPL) as published by the Free Software
|
---|
13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
---|
14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
---|
15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
---|
16 | */
|
---|
17 |
|
---|
18 |
|
---|
19 | /*********************************************************************************************************************************
|
---|
20 | * Header Files *
|
---|
21 | *********************************************************************************************************************************/
|
---|
22 | #define LOG_GROUP LOG_GROUP_VD_VDI
|
---|
23 | #include <VBox/vd-plugin.h>
|
---|
24 | #include "VDICore.h"
|
---|
25 | #include <VBox/err.h>
|
---|
26 |
|
---|
27 | #include <VBox/log.h>
|
---|
28 | #include <iprt/alloc.h>
|
---|
29 | #include <iprt/assert.h>
|
---|
30 | #include <iprt/uuid.h>
|
---|
31 | #include <iprt/string.h>
|
---|
32 | #include <iprt/asm.h>
|
---|
33 |
|
---|
34 | #include "VDBackends.h"
|
---|
35 |
|
---|
36 | #define VDI_IMAGE_DEFAULT_BLOCK_SIZE _1M
|
---|
37 |
|
---|
38 | /** Macros for endianess conversion. */
|
---|
39 | #define SET_ENDIAN_U32(conv, u32) (conv == VDIECONV_H2F ? RT_H2LE_U32(u32) : RT_LE2H_U32(u32))
|
---|
40 | #define SET_ENDIAN_U64(conv, u64) (conv == VDIECONV_H2F ? RT_H2LE_U64(u64) : RT_LE2H_U64(u64))
|
---|
41 |
|
---|
42 |
|
---|
43 | /*********************************************************************************************************************************
|
---|
44 | * Static Variables *
|
---|
45 | *********************************************************************************************************************************/
|
---|
46 |
|
---|
47 | /** NULL-terminated array of supported file extensions. */
|
---|
48 | static const VDFILEEXTENSION s_aVdiFileExtensions[] =
|
---|
49 | {
|
---|
50 | {"vdi", VDTYPE_HDD},
|
---|
51 | {NULL, VDTYPE_INVALID}
|
---|
52 | };
|
---|
53 |
|
---|
54 |
|
---|
55 | /*********************************************************************************************************************************
|
---|
56 | * Internal Functions *
|
---|
57 | *********************************************************************************************************************************/
|
---|
58 | static unsigned getPowerOfTwo(unsigned uNumber);
|
---|
59 | static void vdiInitPreHeader(PVDIPREHEADER pPreHdr);
|
---|
60 | static int vdiValidatePreHeader(PVDIPREHEADER pPreHdr);
|
---|
61 | static int vdiValidateHeader(PVDIHEADER pHeader);
|
---|
62 | static void vdiSetupImageDesc(PVDIIMAGEDESC pImage);
|
---|
63 | static int vdiUpdateHeader(PVDIIMAGEDESC pImage);
|
---|
64 | static int vdiUpdateBlockInfo(PVDIIMAGEDESC pImage, unsigned uBlock);
|
---|
65 | static int vdiUpdateHeaderAsync(PVDIIMAGEDESC pImage, PVDIOCTX pIoCtx);
|
---|
66 | static int vdiUpdateBlockInfoAsync(PVDIIMAGEDESC pImage, unsigned uBlock, PVDIOCTX pIoCtx,
|
---|
67 | bool fUpdateHdr);
|
---|
68 |
|
---|
69 | /**
|
---|
70 | * Internal: Convert the PreHeader fields to the appropriate endianess.
|
---|
71 | * @param enmConv Direction of the conversion.
|
---|
72 | * @param pPreHdrConv Where to store the converted pre header.
|
---|
73 | * @param pPreHdr PreHeader pointer.
|
---|
74 | */
|
---|
75 | static void vdiConvPreHeaderEndianess(VDIECONV enmConv, PVDIPREHEADER pPreHdrConv,
|
---|
76 | PVDIPREHEADER pPreHdr)
|
---|
77 | {
|
---|
78 | memcpy(pPreHdrConv->szFileInfo, pPreHdr->szFileInfo, sizeof(pPreHdr->szFileInfo));
|
---|
79 | pPreHdrConv->u32Signature = SET_ENDIAN_U32(enmConv, pPreHdr->u32Signature);
|
---|
80 | pPreHdrConv->u32Version = SET_ENDIAN_U32(enmConv, pPreHdr->u32Version);
|
---|
81 | }
|
---|
82 |
|
---|
83 | /**
|
---|
84 | * Internal: Convert the VDIDISKGEOMETRY fields to the appropriate endianess.
|
---|
85 | * @param enmConv Direction of the conversion.
|
---|
86 | * @param pDiskGeoConv Where to store the converted geometry.
|
---|
87 | * @param pDiskGeo Pointer to the disk geometry to convert.
|
---|
88 | */
|
---|
89 | static void vdiConvGeometryEndianess(VDIECONV enmConv, PVDIDISKGEOMETRY pDiskGeoConv,
|
---|
90 | PVDIDISKGEOMETRY pDiskGeo)
|
---|
91 | {
|
---|
92 | pDiskGeoConv->cCylinders = SET_ENDIAN_U32(enmConv, pDiskGeo->cCylinders);
|
---|
93 | pDiskGeoConv->cHeads = SET_ENDIAN_U32(enmConv, pDiskGeo->cHeads);
|
---|
94 | pDiskGeoConv->cSectors = SET_ENDIAN_U32(enmConv, pDiskGeo->cSectors);
|
---|
95 | pDiskGeoConv->cbSector = SET_ENDIAN_U32(enmConv, pDiskGeo->cbSector);
|
---|
96 | }
|
---|
97 |
|
---|
98 | /**
|
---|
99 | * Internal: Convert the Header - version 0 fields to the appropriate endianess.
|
---|
100 | * @param enmConv Direction of the conversion.
|
---|
101 | * @param pHdrConv Where to store the converted header.
|
---|
102 | * @param pHdr Pointer to the version 0 header.
|
---|
103 | */
|
---|
104 | static void vdiConvHeaderEndianessV0(VDIECONV enmConv, PVDIHEADER0 pHdrConv,
|
---|
105 | PVDIHEADER0 pHdr)
|
---|
106 | {
|
---|
107 | memmove(pHdrConv->szComment, pHdr->szComment, sizeof(pHdr->szComment));
|
---|
108 | pHdrConv->u32Type = SET_ENDIAN_U32(enmConv, pHdr->u32Type);
|
---|
109 | pHdrConv->fFlags = SET_ENDIAN_U32(enmConv, pHdr->fFlags);
|
---|
110 | vdiConvGeometryEndianess(enmConv, &pHdrConv->LegacyGeometry, &pHdr->LegacyGeometry);
|
---|
111 | pHdrConv->cbDisk = SET_ENDIAN_U64(enmConv, pHdr->cbDisk);
|
---|
112 | pHdrConv->cbBlock = SET_ENDIAN_U32(enmConv, pHdr->cbBlock);
|
---|
113 | pHdrConv->cBlocks = SET_ENDIAN_U32(enmConv, pHdr->cBlocks);
|
---|
114 | pHdrConv->cBlocksAllocated = SET_ENDIAN_U32(enmConv, pHdr->cBlocksAllocated);
|
---|
115 | /* Don't convert the RTUUID fields. */
|
---|
116 | pHdrConv->uuidCreate = pHdr->uuidCreate;
|
---|
117 | pHdrConv->uuidModify = pHdr->uuidModify;
|
---|
118 | pHdrConv->uuidLinkage = pHdr->uuidLinkage;
|
---|
119 | }
|
---|
120 |
|
---|
121 | /**
|
---|
122 | * Internal: Set the Header - version 1 fields to the appropriate endianess.
|
---|
123 | * @param enmConv Direction of the conversion.
|
---|
124 | * @param pHdrConv Where to store the converted header.
|
---|
125 | * @param pHdr Version 1 Header pointer.
|
---|
126 | */
|
---|
127 | static void vdiConvHeaderEndianessV1(VDIECONV enmConv, PVDIHEADER1 pHdrConv,
|
---|
128 | PVDIHEADER1 pHdr)
|
---|
129 | {
|
---|
130 | memmove(pHdrConv->szComment, pHdr->szComment, sizeof(pHdr->szComment));
|
---|
131 | pHdrConv->cbHeader = SET_ENDIAN_U32(enmConv, pHdr->cbHeader);
|
---|
132 | pHdrConv->u32Type = SET_ENDIAN_U32(enmConv, pHdr->u32Type);
|
---|
133 | pHdrConv->fFlags = SET_ENDIAN_U32(enmConv, pHdr->fFlags);
|
---|
134 | pHdrConv->offBlocks = SET_ENDIAN_U32(enmConv, pHdr->offBlocks);
|
---|
135 | pHdrConv->offData = SET_ENDIAN_U32(enmConv, pHdr->offData);
|
---|
136 | vdiConvGeometryEndianess(enmConv, &pHdrConv->LegacyGeometry, &pHdr->LegacyGeometry);
|
---|
137 | pHdrConv->u32Dummy = SET_ENDIAN_U32(enmConv, pHdr->u32Dummy);
|
---|
138 | pHdrConv->cbDisk = SET_ENDIAN_U64(enmConv, pHdr->cbDisk);
|
---|
139 | pHdrConv->cbBlock = SET_ENDIAN_U32(enmConv, pHdr->cbBlock);
|
---|
140 | pHdrConv->cbBlockExtra = SET_ENDIAN_U32(enmConv, pHdr->cbBlockExtra);
|
---|
141 | pHdrConv->cBlocks = SET_ENDIAN_U32(enmConv, pHdr->cBlocks);
|
---|
142 | pHdrConv->cBlocksAllocated = SET_ENDIAN_U32(enmConv, pHdr->cBlocksAllocated);
|
---|
143 | /* Don't convert the RTUUID fields. */
|
---|
144 | pHdrConv->uuidCreate = pHdr->uuidCreate;
|
---|
145 | pHdrConv->uuidModify = pHdr->uuidModify;
|
---|
146 | pHdrConv->uuidLinkage = pHdr->uuidLinkage;
|
---|
147 | pHdrConv->uuidParentModify = pHdr->uuidParentModify;
|
---|
148 | }
|
---|
149 |
|
---|
150 | /**
|
---|
151 | * Internal: Set the Header - version 1plus fields to the appropriate endianess.
|
---|
152 | * @param enmConv Direction of the conversion.
|
---|
153 | * @param pHdrConv Where to store the converted header.
|
---|
154 | * @param pHdr Version 1+ Header pointer.
|
---|
155 | */
|
---|
156 | static void vdiConvHeaderEndianessV1p(VDIECONV enmConv, PVDIHEADER1PLUS pHdrConv,
|
---|
157 | PVDIHEADER1PLUS pHdr)
|
---|
158 | {
|
---|
159 | memmove(pHdrConv->szComment, pHdr->szComment, sizeof(pHdr->szComment));
|
---|
160 | pHdrConv->cbHeader = SET_ENDIAN_U32(enmConv, pHdr->cbHeader);
|
---|
161 | pHdrConv->u32Type = SET_ENDIAN_U32(enmConv, pHdr->u32Type);
|
---|
162 | pHdrConv->fFlags = SET_ENDIAN_U32(enmConv, pHdr->fFlags);
|
---|
163 | pHdrConv->offBlocks = SET_ENDIAN_U32(enmConv, pHdr->offBlocks);
|
---|
164 | pHdrConv->offData = SET_ENDIAN_U32(enmConv, pHdr->offData);
|
---|
165 | vdiConvGeometryEndianess(enmConv, &pHdrConv->LegacyGeometry, &pHdr->LegacyGeometry);
|
---|
166 | pHdrConv->u32Dummy = SET_ENDIAN_U32(enmConv, pHdr->u32Dummy);
|
---|
167 | pHdrConv->cbDisk = SET_ENDIAN_U64(enmConv, pHdr->cbDisk);
|
---|
168 | pHdrConv->cbBlock = SET_ENDIAN_U32(enmConv, pHdr->cbBlock);
|
---|
169 | pHdrConv->cbBlockExtra = SET_ENDIAN_U32(enmConv, pHdr->cbBlockExtra);
|
---|
170 | pHdrConv->cBlocks = SET_ENDIAN_U32(enmConv, pHdr->cBlocks);
|
---|
171 | pHdrConv->cBlocksAllocated = SET_ENDIAN_U32(enmConv, pHdr->cBlocksAllocated);
|
---|
172 | /* Don't convert the RTUUID fields. */
|
---|
173 | pHdrConv->uuidCreate = pHdr->uuidCreate;
|
---|
174 | pHdrConv->uuidModify = pHdr->uuidModify;
|
---|
175 | pHdrConv->uuidLinkage = pHdr->uuidLinkage;
|
---|
176 | pHdrConv->uuidParentModify = pHdr->uuidParentModify;
|
---|
177 | vdiConvGeometryEndianess(enmConv, &pHdrConv->LCHSGeometry, &pHdr->LCHSGeometry);
|
---|
178 | }
|
---|
179 |
|
---|
180 | /**
|
---|
181 | * Internal: Set the appropriate endianess on all the Blocks pointed.
|
---|
182 | * @param enmConv Direction of the conversion.
|
---|
183 | * @param paBlocks Pointer to the block array.
|
---|
184 | * @param cEntries Number of entries in the block array.
|
---|
185 | *
|
---|
186 | * @note Unlike the other conversion functions this method does an in place conversion
|
---|
187 | * to avoid temporary memory allocations when writing the block array.
|
---|
188 | */
|
---|
189 | static void vdiConvBlocksEndianess(VDIECONV enmConv, PVDIIMAGEBLOCKPOINTER paBlocks,
|
---|
190 | unsigned cEntries)
|
---|
191 | {
|
---|
192 | for (unsigned i = 0; i < cEntries; i++)
|
---|
193 | paBlocks[i] = SET_ENDIAN_U32(enmConv, paBlocks[i]);
|
---|
194 | }
|
---|
195 |
|
---|
196 | /**
|
---|
197 | * Internal: Flush the image file to disk.
|
---|
198 | */
|
---|
199 | static void vdiFlushImage(PVDIIMAGEDESC pImage)
|
---|
200 | {
|
---|
201 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
202 | {
|
---|
203 | /* Save header. */
|
---|
204 | int rc = vdiUpdateHeader(pImage);
|
---|
205 | AssertMsgRC(rc, ("vdiUpdateHeader() failed, filename=\"%s\", rc=%Rrc\n",
|
---|
206 | pImage->pszFilename, rc));
|
---|
207 | vdIfIoIntFileFlushSync(pImage->pIfIo, pImage->pStorage);
|
---|
208 | }
|
---|
209 | }
|
---|
210 |
|
---|
211 | /**
|
---|
212 | * Internal: Free all allocated space for representing an image, and optionally
|
---|
213 | * delete the image from disk.
|
---|
214 | */
|
---|
215 | static int vdiFreeImage(PVDIIMAGEDESC pImage, bool fDelete)
|
---|
216 | {
|
---|
217 | int rc = VINF_SUCCESS;
|
---|
218 |
|
---|
219 | /* Freeing a never allocated image (e.g. because the open failed) is
|
---|
220 | * not signalled as an error. After all nothing bad happens. */
|
---|
221 | if (pImage)
|
---|
222 | {
|
---|
223 | if (pImage->pStorage)
|
---|
224 | {
|
---|
225 | /* No point updating the file that is deleted anyway. */
|
---|
226 | if (!fDelete)
|
---|
227 | vdiFlushImage(pImage);
|
---|
228 |
|
---|
229 | rc = vdIfIoIntFileClose(pImage->pIfIo, pImage->pStorage);
|
---|
230 | pImage->pStorage = NULL;
|
---|
231 | }
|
---|
232 |
|
---|
233 | if (pImage->paBlocks)
|
---|
234 | {
|
---|
235 | RTMemFree(pImage->paBlocks);
|
---|
236 | pImage->paBlocks = NULL;
|
---|
237 | }
|
---|
238 |
|
---|
239 | if (pImage->paBlocksRev)
|
---|
240 | {
|
---|
241 | RTMemFree(pImage->paBlocksRev);
|
---|
242 | pImage->paBlocksRev = NULL;
|
---|
243 | }
|
---|
244 |
|
---|
245 | if (fDelete && pImage->pszFilename)
|
---|
246 | vdIfIoIntFileDelete(pImage->pIfIo, pImage->pszFilename);
|
---|
247 | }
|
---|
248 |
|
---|
249 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
250 | return rc;
|
---|
251 | }
|
---|
252 |
|
---|
253 | /**
|
---|
254 | * internal: return power of 2 or 0 if num error.
|
---|
255 | */
|
---|
256 | static unsigned getPowerOfTwo(unsigned uNumber)
|
---|
257 | {
|
---|
258 | if (uNumber == 0)
|
---|
259 | return 0;
|
---|
260 | unsigned uPower2 = 0;
|
---|
261 | while ((uNumber & 1) == 0)
|
---|
262 | {
|
---|
263 | uNumber >>= 1;
|
---|
264 | uPower2++;
|
---|
265 | }
|
---|
266 | return uNumber == 1 ? uPower2 : 0;
|
---|
267 | }
|
---|
268 |
|
---|
269 | /**
|
---|
270 | * Internal: Init VDI preheader.
|
---|
271 | */
|
---|
272 | static void vdiInitPreHeader(PVDIPREHEADER pPreHdr)
|
---|
273 | {
|
---|
274 | pPreHdr->u32Signature = VDI_IMAGE_SIGNATURE;
|
---|
275 | pPreHdr->u32Version = VDI_IMAGE_VERSION;
|
---|
276 | memset(pPreHdr->szFileInfo, 0, sizeof(pPreHdr->szFileInfo));
|
---|
277 | strncat(pPreHdr->szFileInfo, VDI_IMAGE_FILE_INFO, sizeof(pPreHdr->szFileInfo)-1);
|
---|
278 | }
|
---|
279 |
|
---|
280 | /**
|
---|
281 | * Internal: check VDI preheader.
|
---|
282 | */
|
---|
283 | static int vdiValidatePreHeader(PVDIPREHEADER pPreHdr)
|
---|
284 | {
|
---|
285 | if (pPreHdr->u32Signature != VDI_IMAGE_SIGNATURE)
|
---|
286 | return VERR_VD_VDI_INVALID_HEADER;
|
---|
287 |
|
---|
288 | if ( VDI_GET_VERSION_MAJOR(pPreHdr->u32Version) != VDI_IMAGE_VERSION_MAJOR
|
---|
289 | && pPreHdr->u32Version != 0x00000002) /* old version. */
|
---|
290 | return VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
291 |
|
---|
292 | return VINF_SUCCESS;
|
---|
293 | }
|
---|
294 |
|
---|
295 | /**
|
---|
296 | * Internal: translate VD image flags to VDI image type enum.
|
---|
297 | */
|
---|
298 | static VDIIMAGETYPE vdiTranslateImageFlags2VDI(unsigned uImageFlags)
|
---|
299 | {
|
---|
300 | if (uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
301 | return VDI_IMAGE_TYPE_FIXED;
|
---|
302 | else if (uImageFlags & VD_IMAGE_FLAGS_DIFF)
|
---|
303 | return VDI_IMAGE_TYPE_DIFF;
|
---|
304 | else
|
---|
305 | return VDI_IMAGE_TYPE_NORMAL;
|
---|
306 | }
|
---|
307 |
|
---|
308 | /**
|
---|
309 | * Internal: translate VDI image type enum to VD image type enum.
|
---|
310 | */
|
---|
311 | static unsigned vdiTranslateVDI2ImageFlags(VDIIMAGETYPE enmType)
|
---|
312 | {
|
---|
313 | switch (enmType)
|
---|
314 | {
|
---|
315 | case VDI_IMAGE_TYPE_NORMAL:
|
---|
316 | return VD_IMAGE_FLAGS_NONE;
|
---|
317 | case VDI_IMAGE_TYPE_FIXED:
|
---|
318 | return VD_IMAGE_FLAGS_FIXED;
|
---|
319 | case VDI_IMAGE_TYPE_DIFF:
|
---|
320 | return VD_IMAGE_FLAGS_DIFF;
|
---|
321 | default:
|
---|
322 | AssertMsgFailed(("invalid VDIIMAGETYPE enmType=%d\n", (int)enmType));
|
---|
323 | return VD_IMAGE_FLAGS_NONE;
|
---|
324 | }
|
---|
325 | }
|
---|
326 |
|
---|
327 | /**
|
---|
328 | * Internal: Init VDI header. Always use latest header version.
|
---|
329 | *
|
---|
330 | * @returns nothing.
|
---|
331 | * @param pHeader Assumes it was initially initialized to all zeros.
|
---|
332 | * @param uImageFlags Flags for this image.
|
---|
333 | * @param pszComment Optional comment to set for the image.
|
---|
334 | * @param cbDisk Size of the disk in bytes.
|
---|
335 | * @param cbBlock Size of one block in the image.
|
---|
336 | * @param cbBlockExtra Extra data for one block private to the image.
|
---|
337 | * @param cbDataAlign The alignment for all data structures.
|
---|
338 | */
|
---|
339 | static void vdiInitHeader(PVDIHEADER pHeader, uint32_t uImageFlags,
|
---|
340 | const char *pszComment, uint64_t cbDisk,
|
---|
341 | uint32_t cbBlock, uint32_t cbBlockExtra,
|
---|
342 | uint32_t cbDataAlign)
|
---|
343 | {
|
---|
344 | pHeader->uVersion = VDI_IMAGE_VERSION;
|
---|
345 | pHeader->u.v1plus.cbHeader = sizeof(VDIHEADER1PLUS);
|
---|
346 | pHeader->u.v1plus.u32Type = (uint32_t)vdiTranslateImageFlags2VDI(uImageFlags);
|
---|
347 | pHeader->u.v1plus.fFlags = (uImageFlags & VD_VDI_IMAGE_FLAGS_ZERO_EXPAND) ? 1 : 0;
|
---|
348 | #ifdef VBOX_STRICT
|
---|
349 | char achZero[VDI_IMAGE_COMMENT_SIZE] = {0};
|
---|
350 | Assert(!memcmp(pHeader->u.v1plus.szComment, achZero, VDI_IMAGE_COMMENT_SIZE));
|
---|
351 | #endif
|
---|
352 | pHeader->u.v1plus.szComment[0] = '\0';
|
---|
353 | if (pszComment)
|
---|
354 | {
|
---|
355 | AssertMsg(strlen(pszComment) < sizeof(pHeader->u.v1plus.szComment),
|
---|
356 | ("HDD Comment is too long, cb=%d\n", strlen(pszComment)));
|
---|
357 | strncat(pHeader->u.v1plus.szComment, pszComment, sizeof(pHeader->u.v1plus.szComment)-1);
|
---|
358 | }
|
---|
359 |
|
---|
360 | /* Mark the legacy geometry not-calculated. */
|
---|
361 | pHeader->u.v1plus.LegacyGeometry.cCylinders = 0;
|
---|
362 | pHeader->u.v1plus.LegacyGeometry.cHeads = 0;
|
---|
363 | pHeader->u.v1plus.LegacyGeometry.cSectors = 0;
|
---|
364 | pHeader->u.v1plus.LegacyGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
365 | pHeader->u.v1plus.u32Dummy = 0; /* used to be the translation value */
|
---|
366 |
|
---|
367 | pHeader->u.v1plus.cbDisk = cbDisk;
|
---|
368 | pHeader->u.v1plus.cbBlock = cbBlock;
|
---|
369 | pHeader->u.v1plus.cBlocks = (uint32_t)(cbDisk / cbBlock);
|
---|
370 | if (cbDisk % cbBlock)
|
---|
371 | pHeader->u.v1plus.cBlocks++;
|
---|
372 | pHeader->u.v1plus.cbBlockExtra = cbBlockExtra;
|
---|
373 | pHeader->u.v1plus.cBlocksAllocated = 0;
|
---|
374 |
|
---|
375 | /* Init offsets. */
|
---|
376 | pHeader->u.v1plus.offBlocks = RT_ALIGN_32(sizeof(VDIPREHEADER) + sizeof(VDIHEADER1PLUS), cbDataAlign);
|
---|
377 | pHeader->u.v1plus.offData = RT_ALIGN_32(pHeader->u.v1plus.offBlocks + (pHeader->u.v1plus.cBlocks * sizeof(VDIIMAGEBLOCKPOINTER)), cbDataAlign);
|
---|
378 |
|
---|
379 | /* Init uuids. */
|
---|
380 | #ifdef _MSC_VER
|
---|
381 | # pragma warning(disable:4366) /* (harmless "misalignment") */
|
---|
382 | #endif
|
---|
383 | RTUuidCreate(&pHeader->u.v1plus.uuidCreate);
|
---|
384 | RTUuidClear(&pHeader->u.v1plus.uuidModify);
|
---|
385 | RTUuidClear(&pHeader->u.v1plus.uuidLinkage);
|
---|
386 | RTUuidClear(&pHeader->u.v1plus.uuidParentModify);
|
---|
387 | #ifdef _MSC_VER
|
---|
388 | # pragma warning(default:4366)
|
---|
389 | #endif
|
---|
390 |
|
---|
391 | /* Mark LCHS geometry not-calculated. */
|
---|
392 | pHeader->u.v1plus.LCHSGeometry.cCylinders = 0;
|
---|
393 | pHeader->u.v1plus.LCHSGeometry.cHeads = 0;
|
---|
394 | pHeader->u.v1plus.LCHSGeometry.cSectors = 0;
|
---|
395 | pHeader->u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
396 | }
|
---|
397 |
|
---|
398 | /**
|
---|
399 | * Internal: Check VDI header.
|
---|
400 | */
|
---|
401 | static int vdiValidateHeader(PVDIHEADER pHeader)
|
---|
402 | {
|
---|
403 | /* Check version-dependent header parameters. */
|
---|
404 | switch (GET_MAJOR_HEADER_VERSION(pHeader))
|
---|
405 | {
|
---|
406 | case 0:
|
---|
407 | {
|
---|
408 | /* Old header version. */
|
---|
409 | break;
|
---|
410 | }
|
---|
411 | case 1:
|
---|
412 | {
|
---|
413 | /* Current header version. */
|
---|
414 |
|
---|
415 | if (pHeader->u.v1.cbHeader < sizeof(VDIHEADER1))
|
---|
416 | {
|
---|
417 | LogRel(("VDI: v1 header size wrong (%d < %d)\n",
|
---|
418 | pHeader->u.v1.cbHeader, sizeof(VDIHEADER1)));
|
---|
419 | return VERR_VD_VDI_INVALID_HEADER;
|
---|
420 | }
|
---|
421 |
|
---|
422 | if (getImageBlocksOffset(pHeader) < (sizeof(VDIPREHEADER) + sizeof(VDIHEADER1)))
|
---|
423 | {
|
---|
424 | LogRel(("VDI: v1 blocks offset wrong (%d < %d)\n",
|
---|
425 | getImageBlocksOffset(pHeader), sizeof(VDIPREHEADER) + sizeof(VDIHEADER1)));
|
---|
426 | return VERR_VD_VDI_INVALID_HEADER;
|
---|
427 | }
|
---|
428 |
|
---|
429 | if (getImageDataOffset(pHeader) < (getImageBlocksOffset(pHeader) + getImageBlocks(pHeader) * sizeof(VDIIMAGEBLOCKPOINTER)))
|
---|
430 | {
|
---|
431 | LogRel(("VDI: v1 image data offset wrong (%d < %d)\n",
|
---|
432 | getImageDataOffset(pHeader), getImageBlocksOffset(pHeader) + getImageBlocks(pHeader) * sizeof(VDIIMAGEBLOCKPOINTER)));
|
---|
433 | return VERR_VD_VDI_INVALID_HEADER;
|
---|
434 | }
|
---|
435 |
|
---|
436 | break;
|
---|
437 | }
|
---|
438 | default:
|
---|
439 | /* Unsupported. */
|
---|
440 | return VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
441 | }
|
---|
442 |
|
---|
443 | /* Check common header parameters. */
|
---|
444 |
|
---|
445 | bool fFailed = false;
|
---|
446 |
|
---|
447 | if ( getImageType(pHeader) < VDI_IMAGE_TYPE_FIRST
|
---|
448 | || getImageType(pHeader) > VDI_IMAGE_TYPE_LAST)
|
---|
449 | {
|
---|
450 | LogRel(("VDI: bad image type %d\n", getImageType(pHeader)));
|
---|
451 | fFailed = true;
|
---|
452 | }
|
---|
453 |
|
---|
454 | if (getImageFlags(pHeader) & ~VD_VDI_IMAGE_FLAGS_MASK)
|
---|
455 | {
|
---|
456 | LogRel(("VDI: bad image flags %08x\n", getImageFlags(pHeader)));
|
---|
457 | fFailed = true;
|
---|
458 | }
|
---|
459 |
|
---|
460 | if ( getImageLCHSGeometry(pHeader)
|
---|
461 | && (getImageLCHSGeometry(pHeader))->cbSector != VDI_GEOMETRY_SECTOR_SIZE)
|
---|
462 | {
|
---|
463 | LogRel(("VDI: wrong sector size (%d != %d)\n",
|
---|
464 | (getImageLCHSGeometry(pHeader))->cbSector, VDI_GEOMETRY_SECTOR_SIZE));
|
---|
465 | fFailed = true;
|
---|
466 | }
|
---|
467 |
|
---|
468 | if ( getImageDiskSize(pHeader) == 0
|
---|
469 | || getImageBlockSize(pHeader) == 0
|
---|
470 | || getImageBlocks(pHeader) == 0
|
---|
471 | || getPowerOfTwo(getImageBlockSize(pHeader)) == 0)
|
---|
472 | {
|
---|
473 | LogRel(("VDI: wrong size (%lld, %d, %d, %d)\n",
|
---|
474 | getImageDiskSize(pHeader), getImageBlockSize(pHeader),
|
---|
475 | getImageBlocks(pHeader), getPowerOfTwo(getImageBlockSize(pHeader))));
|
---|
476 | fFailed = true;
|
---|
477 | }
|
---|
478 |
|
---|
479 | if (getImageBlocksAllocated(pHeader) > getImageBlocks(pHeader))
|
---|
480 | {
|
---|
481 | LogRel(("VDI: too many blocks allocated (%d > %d)\n"
|
---|
482 | " blocksize=%d disksize=%lld\n",
|
---|
483 | getImageBlocksAllocated(pHeader), getImageBlocks(pHeader),
|
---|
484 | getImageBlockSize(pHeader), getImageDiskSize(pHeader)));
|
---|
485 | fFailed = true;
|
---|
486 | }
|
---|
487 |
|
---|
488 | if ( getImageExtraBlockSize(pHeader) != 0
|
---|
489 | && getPowerOfTwo(getImageExtraBlockSize(pHeader)) == 0)
|
---|
490 | {
|
---|
491 | LogRel(("VDI: wrong extra size (%d, %d)\n",
|
---|
492 | getImageExtraBlockSize(pHeader), getPowerOfTwo(getImageExtraBlockSize(pHeader))));
|
---|
493 | fFailed = true;
|
---|
494 | }
|
---|
495 |
|
---|
496 | if ((uint64_t)getImageBlockSize(pHeader) * getImageBlocks(pHeader) < getImageDiskSize(pHeader))
|
---|
497 | {
|
---|
498 | LogRel(("VDI: wrong disk size (%d, %d, %lld)\n",
|
---|
499 | getImageBlockSize(pHeader), getImageBlocks(pHeader), getImageDiskSize(pHeader)));
|
---|
500 | fFailed = true;
|
---|
501 | }
|
---|
502 |
|
---|
503 | if (RTUuidIsNull(getImageCreationUUID(pHeader)))
|
---|
504 | {
|
---|
505 | LogRel(("VDI: uuid of creator is 0\n"));
|
---|
506 | fFailed = true;
|
---|
507 | }
|
---|
508 |
|
---|
509 | if (RTUuidIsNull(getImageModificationUUID(pHeader)))
|
---|
510 | {
|
---|
511 | LogRel(("VDI: uuid of modifier is 0\n"));
|
---|
512 | fFailed = true;
|
---|
513 | }
|
---|
514 |
|
---|
515 | return fFailed ? VERR_VD_VDI_INVALID_HEADER : VINF_SUCCESS;
|
---|
516 | }
|
---|
517 |
|
---|
518 | /**
|
---|
519 | * Internal: Set up VDIIMAGEDESC structure by image header.
|
---|
520 | */
|
---|
521 | static void vdiSetupImageDesc(PVDIIMAGEDESC pImage)
|
---|
522 | {
|
---|
523 | pImage->uImageFlags = getImageFlags(&pImage->Header);
|
---|
524 | pImage->uImageFlags |= vdiTranslateVDI2ImageFlags(getImageType(&pImage->Header));
|
---|
525 | pImage->offStartBlocks = getImageBlocksOffset(&pImage->Header);
|
---|
526 | pImage->offStartData = getImageDataOffset(&pImage->Header);
|
---|
527 | pImage->uBlockMask = getImageBlockSize(&pImage->Header) - 1;
|
---|
528 | pImage->uShiftOffset2Index = getPowerOfTwo(getImageBlockSize(&pImage->Header));
|
---|
529 | pImage->offStartBlockData = getImageExtraBlockSize(&pImage->Header);
|
---|
530 | pImage->cbTotalBlockData = pImage->offStartBlockData
|
---|
531 | + getImageBlockSize(&pImage->Header);
|
---|
532 | }
|
---|
533 |
|
---|
534 | /**
|
---|
535 | * Sets up the complete image state from the given parameters.
|
---|
536 | *
|
---|
537 | * @returns VBox status code.
|
---|
538 | * @param pImage The VDI image descriptor.
|
---|
539 | * @param uImageFlags Image flags.
|
---|
540 | * @param pszComment The comment for the image (optional).
|
---|
541 | * @param cbSize Size of the resulting image in bytes.
|
---|
542 | * @param cbDataAlign Data alignment in bytes.
|
---|
543 | * @param pPCHSGeometry Physical CHS geometry for the image.
|
---|
544 | * @param pLCHSGeometry Logical CHS geometry for the image.
|
---|
545 | */
|
---|
546 | static int vdiSetupImageState(PVDIIMAGEDESC pImage, unsigned uImageFlags, const char *pszComment,
|
---|
547 | uint64_t cbSize, uint32_t cbDataAlign, PCVDGEOMETRY pPCHSGeometry,
|
---|
548 | PCVDGEOMETRY pLCHSGeometry)
|
---|
549 | {
|
---|
550 | int rc = VINF_SUCCESS;
|
---|
551 |
|
---|
552 | vdiInitPreHeader(&pImage->PreHeader);
|
---|
553 | vdiInitHeader(&pImage->Header, uImageFlags, pszComment, cbSize, VDI_IMAGE_DEFAULT_BLOCK_SIZE, 0,
|
---|
554 | cbDataAlign);
|
---|
555 | /* Save PCHS geometry. Not much work, and makes the flow of information
|
---|
556 | * quite a bit clearer - relying on the higher level isn't obvious. */
|
---|
557 | pImage->PCHSGeometry = *pPCHSGeometry;
|
---|
558 | /* Set LCHS geometry (legacy geometry is ignored for the current 1.1+). */
|
---|
559 | pImage->Header.u.v1plus.LCHSGeometry.cCylinders = pLCHSGeometry->cCylinders;
|
---|
560 | pImage->Header.u.v1plus.LCHSGeometry.cHeads = pLCHSGeometry->cHeads;
|
---|
561 | pImage->Header.u.v1plus.LCHSGeometry.cSectors = pLCHSGeometry->cSectors;
|
---|
562 | pImage->Header.u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
563 |
|
---|
564 | pImage->paBlocks = (PVDIIMAGEBLOCKPOINTER)RTMemAlloc(sizeof(VDIIMAGEBLOCKPOINTER) * getImageBlocks(&pImage->Header));
|
---|
565 | if (RT_LIKELY(pImage->paBlocks))
|
---|
566 | {
|
---|
567 | if (!(uImageFlags & VD_IMAGE_FLAGS_FIXED))
|
---|
568 | {
|
---|
569 | /* for growing images mark all blocks in paBlocks as free. */
|
---|
570 | for (unsigned i = 0; i < pImage->Header.u.v1.cBlocks; i++)
|
---|
571 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
572 | }
|
---|
573 | else
|
---|
574 | {
|
---|
575 | /* for fixed images mark all blocks in paBlocks as allocated */
|
---|
576 | for (unsigned i = 0; i < pImage->Header.u.v1.cBlocks; i++)
|
---|
577 | pImage->paBlocks[i] = i;
|
---|
578 | pImage->Header.u.v1.cBlocksAllocated = pImage->Header.u.v1.cBlocks;
|
---|
579 | }
|
---|
580 |
|
---|
581 | /* Setup image parameters. */
|
---|
582 | vdiSetupImageDesc(pImage);
|
---|
583 | }
|
---|
584 | else
|
---|
585 | rc = VERR_NO_MEMORY;
|
---|
586 |
|
---|
587 | return rc;
|
---|
588 | }
|
---|
589 |
|
---|
590 | /**
|
---|
591 | * Creates the image file from the given descriptor.
|
---|
592 | *
|
---|
593 | * @returns VBox status code.
|
---|
594 | * @param pImage The VDI image descriptor.
|
---|
595 | * @param uOpenFlags Open flags.
|
---|
596 | * @param pIfProgress The progress interface.
|
---|
597 | * @param uPercentStart Progress starting point.
|
---|
598 | * @param uPercentSpan How many percent for this part of the operation is used.
|
---|
599 | */
|
---|
600 | static int vdiImageCreateFile(PVDIIMAGEDESC pImage, unsigned uOpenFlags,
|
---|
601 | PVDINTERFACEPROGRESS pIfProgress, unsigned uPercentStart,
|
---|
602 | unsigned uPercentSpan)
|
---|
603 | {
|
---|
604 | int rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
|
---|
605 | VDOpenFlagsToFileOpenFlags(uOpenFlags & ~VD_OPEN_FLAGS_READONLY,
|
---|
606 | true /* fCreate */),
|
---|
607 | &pImage->pStorage);
|
---|
608 | if (RT_SUCCESS(rc))
|
---|
609 | {
|
---|
610 | if (pImage->uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
611 | {
|
---|
612 | uint64_t cbTotal = pImage->offStartData
|
---|
613 | + (uint64_t)getImageBlocks(&pImage->Header) * pImage->cbTotalBlockData;
|
---|
614 |
|
---|
615 | /* Check the free space on the disk and leave early if there is not
|
---|
616 | * sufficient space available. */
|
---|
617 | int64_t cbFree = 0;
|
---|
618 | rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
|
---|
619 | if (RT_SUCCESS(rc) /* ignore errors */ && ((uint64_t)cbFree < cbTotal))
|
---|
620 | rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS,
|
---|
621 | N_("VDI: disk would overflow creating image '%s'"), pImage->pszFilename);
|
---|
622 | else
|
---|
623 | {
|
---|
624 | /*
|
---|
625 | * Allocate & commit whole file if fixed image, it must be more
|
---|
626 | * effective than expanding file by write operations.
|
---|
627 | */
|
---|
628 | rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pImage->pStorage, cbTotal, 0 /* fFlags */,
|
---|
629 | pIfProgress, uPercentStart, uPercentSpan);
|
---|
630 | pImage->cbImage = cbTotal;
|
---|
631 | }
|
---|
632 | }
|
---|
633 | else
|
---|
634 | {
|
---|
635 | /* Set file size to hold header and blocks array. */
|
---|
636 | rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, pImage->offStartData);
|
---|
637 | pImage->cbImage = pImage->offStartData;
|
---|
638 | }
|
---|
639 | if (RT_SUCCESS(rc))
|
---|
640 | {
|
---|
641 | /* Write pre-header. */
|
---|
642 | VDIPREHEADER PreHeader;
|
---|
643 | vdiConvPreHeaderEndianess(VDIECONV_H2F, &PreHeader, &pImage->PreHeader);
|
---|
644 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, 0,
|
---|
645 | &PreHeader, sizeof(PreHeader));
|
---|
646 | if (RT_SUCCESS(rc))
|
---|
647 | {
|
---|
648 | /* Write header. */
|
---|
649 | VDIHEADER1PLUS Hdr;
|
---|
650 | vdiConvHeaderEndianessV1p(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1plus);
|
---|
651 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, sizeof(pImage->PreHeader),
|
---|
652 | &Hdr, sizeof(Hdr));
|
---|
653 | if (RT_SUCCESS(rc))
|
---|
654 | {
|
---|
655 | vdiConvBlocksEndianess(VDIECONV_H2F, pImage->paBlocks, getImageBlocks(&pImage->Header));
|
---|
656 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, pImage->offStartBlocks, pImage->paBlocks,
|
---|
657 | getImageBlocks(&pImage->Header) * sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
658 | vdiConvBlocksEndianess(VDIECONV_F2H, pImage->paBlocks, getImageBlocks(&pImage->Header));
|
---|
659 | if (RT_FAILURE(rc))
|
---|
660 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: writing block pointers failed for '%s'"),
|
---|
661 | pImage->pszFilename);
|
---|
662 | }
|
---|
663 | else
|
---|
664 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: writing header failed for '%s'"),
|
---|
665 | pImage->pszFilename);
|
---|
666 | }
|
---|
667 | else
|
---|
668 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: writing pre-header failed for '%s'"),
|
---|
669 | pImage->pszFilename);
|
---|
670 | }
|
---|
671 | else
|
---|
672 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: setting image size failed for '%s'"),
|
---|
673 | pImage->pszFilename);
|
---|
674 | }
|
---|
675 | else
|
---|
676 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: cannot create image '%s'"),
|
---|
677 | pImage->pszFilename);
|
---|
678 |
|
---|
679 | return rc;
|
---|
680 | }
|
---|
681 |
|
---|
682 | /**
|
---|
683 | * Internal: Create VDI image file.
|
---|
684 | */
|
---|
685 | static int vdiCreateImage(PVDIIMAGEDESC pImage, uint64_t cbSize,
|
---|
686 | unsigned uImageFlags, const char *pszComment,
|
---|
687 | PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
|
---|
688 | PCRTUUID pUuid, unsigned uOpenFlags,
|
---|
689 | PVDINTERFACEPROGRESS pIfProgress, unsigned uPercentStart,
|
---|
690 | unsigned uPercentSpan, PVDINTERFACECONFIG pIfCfg)
|
---|
691 | {
|
---|
692 | int rc = VINF_SUCCESS;
|
---|
693 | uint32_t cbDataAlign = VDI_DATA_ALIGN;
|
---|
694 |
|
---|
695 | AssertPtr(pPCHSGeometry);
|
---|
696 | AssertPtr(pLCHSGeometry);
|
---|
697 |
|
---|
698 | pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
|
---|
699 | pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
|
---|
700 | AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
|
---|
701 |
|
---|
702 | /* Special check for comment length. */
|
---|
703 | if ( VALID_PTR(pszComment)
|
---|
704 | && strlen(pszComment) >= VDI_IMAGE_COMMENT_SIZE)
|
---|
705 | rc = vdIfError(pImage->pIfError, VERR_VD_VDI_COMMENT_TOO_LONG, RT_SRC_POS,
|
---|
706 | N_("VDI: comment is too long for '%s'"), pImage->pszFilename);
|
---|
707 |
|
---|
708 | if (pIfCfg)
|
---|
709 | {
|
---|
710 | rc = VDCFGQueryU32Def(pIfCfg, "DataAlignment", &cbDataAlign, VDI_DATA_ALIGN);
|
---|
711 | if (RT_FAILURE(rc))
|
---|
712 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
713 | N_("VDI: Getting data alignment for '%s' failed (%Rrc)"), pImage->pszFilename, rc);
|
---|
714 | }
|
---|
715 |
|
---|
716 | if (RT_SUCCESS(rc))
|
---|
717 | {
|
---|
718 | rc = vdiSetupImageState(pImage, uImageFlags, pszComment, cbSize, cbDataAlign,
|
---|
719 | pPCHSGeometry, pLCHSGeometry);
|
---|
720 | if (RT_SUCCESS(rc))
|
---|
721 | {
|
---|
722 | /* Use specified image uuid */
|
---|
723 | *getImageCreationUUID(&pImage->Header) = *pUuid;
|
---|
724 | /* Generate image last-modify uuid */
|
---|
725 | RTUuidCreate(getImageModificationUUID(&pImage->Header));
|
---|
726 |
|
---|
727 | rc = vdiImageCreateFile(pImage, uOpenFlags, pIfProgress,
|
---|
728 | uPercentStart, uPercentSpan);
|
---|
729 | }
|
---|
730 | }
|
---|
731 |
|
---|
732 | if (RT_SUCCESS(rc))
|
---|
733 | {
|
---|
734 | PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
|
---|
735 | pImage->RegionList.fFlags = 0;
|
---|
736 | pImage->RegionList.cRegions = 1;
|
---|
737 |
|
---|
738 | pRegion->offRegion = 0; /* Disk start. */
|
---|
739 | pRegion->cbBlock = 512;
|
---|
740 | pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
|
---|
741 | pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
|
---|
742 | pRegion->cbData = 512;
|
---|
743 | pRegion->cbMetadata = 0;
|
---|
744 | pRegion->cRegionBlocksOrBytes = getImageDiskSize(&pImage->Header);
|
---|
745 |
|
---|
746 | vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);
|
---|
747 | }
|
---|
748 |
|
---|
749 | if (RT_FAILURE(rc))
|
---|
750 | vdiFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
|
---|
751 | return rc;
|
---|
752 | }
|
---|
753 |
|
---|
754 | /**
|
---|
755 | * Reads and validates the header for the given image descriptor.
|
---|
756 | *
|
---|
757 | * @returns VBox status code.
|
---|
758 | * @param pImage The VDI image descriptor.
|
---|
759 | */
|
---|
760 | static int vdiImageReadHeader(PVDIIMAGEDESC pImage)
|
---|
761 | {
|
---|
762 | /* Get file size. */
|
---|
763 | int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage,
|
---|
764 | &pImage->cbImage);
|
---|
765 | if (RT_SUCCESS(rc))
|
---|
766 | {
|
---|
767 | /* Read pre-header. */
|
---|
768 | VDIPREHEADER PreHeader;
|
---|
769 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, 0,
|
---|
770 | &PreHeader, sizeof(PreHeader));
|
---|
771 | if (RT_SUCCESS(rc))
|
---|
772 | {
|
---|
773 | vdiConvPreHeaderEndianess(VDIECONV_F2H, &pImage->PreHeader, &PreHeader);
|
---|
774 | rc = vdiValidatePreHeader(&pImage->PreHeader);
|
---|
775 | if (RT_SUCCESS(rc))
|
---|
776 | {
|
---|
777 | /* Read header. */
|
---|
778 | pImage->Header.uVersion = pImage->PreHeader.u32Version;
|
---|
779 | switch (GET_MAJOR_HEADER_VERSION(&pImage->Header))
|
---|
780 | {
|
---|
781 | case 0:
|
---|
782 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, sizeof(pImage->PreHeader),
|
---|
783 | &pImage->Header.u.v0, sizeof(pImage->Header.u.v0));
|
---|
784 | if (RT_SUCCESS(rc))
|
---|
785 | vdiConvHeaderEndianessV0(VDIECONV_F2H, &pImage->Header.u.v0, &pImage->Header.u.v0);
|
---|
786 | else
|
---|
787 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error reading v0 header in '%s'"), pImage->pszFilename);
|
---|
788 | break;
|
---|
789 | case 1:
|
---|
790 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, sizeof(pImage->PreHeader),
|
---|
791 | &pImage->Header.u.v1, sizeof(pImage->Header.u.v1));
|
---|
792 | if (RT_SUCCESS(rc))
|
---|
793 | {
|
---|
794 | vdiConvHeaderEndianessV1(VDIECONV_F2H, &pImage->Header.u.v1, &pImage->Header.u.v1);
|
---|
795 | /* Convert VDI 1.1 images to VDI 1.1+ on open in read/write mode.
|
---|
796 | * Conversion is harmless, as any VirtualBox version supporting VDI
|
---|
797 | * 1.1 doesn't touch fields it doesn't know about. */
|
---|
798 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
799 | && GET_MINOR_HEADER_VERSION(&pImage->Header) == 1
|
---|
800 | && pImage->Header.u.v1.cbHeader < sizeof(pImage->Header.u.v1plus))
|
---|
801 | {
|
---|
802 | pImage->Header.u.v1plus.cbHeader = sizeof(pImage->Header.u.v1plus);
|
---|
803 | /* Mark LCHS geometry not-calculated. */
|
---|
804 | pImage->Header.u.v1plus.LCHSGeometry.cCylinders = 0;
|
---|
805 | pImage->Header.u.v1plus.LCHSGeometry.cHeads = 0;
|
---|
806 | pImage->Header.u.v1plus.LCHSGeometry.cSectors = 0;
|
---|
807 | pImage->Header.u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
808 | }
|
---|
809 | else if (pImage->Header.u.v1.cbHeader >= sizeof(pImage->Header.u.v1plus))
|
---|
810 | {
|
---|
811 | /* Read the actual VDI 1.1+ header completely. */
|
---|
812 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, sizeof(pImage->PreHeader),
|
---|
813 | &pImage->Header.u.v1plus,
|
---|
814 | sizeof(pImage->Header.u.v1plus));
|
---|
815 | if (RT_SUCCESS(rc))
|
---|
816 | vdiConvHeaderEndianessV1p(VDIECONV_F2H, &pImage->Header.u.v1plus, &pImage->Header.u.v1plus);
|
---|
817 | else
|
---|
818 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error reading v1.1+ header in '%s'"), pImage->pszFilename);
|
---|
819 | }
|
---|
820 | }
|
---|
821 | else
|
---|
822 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error reading v1 header in '%s'"), pImage->pszFilename);
|
---|
823 | break;
|
---|
824 | default:
|
---|
825 | rc = vdIfError(pImage->pIfError, VERR_VD_VDI_UNSUPPORTED_VERSION, RT_SRC_POS,
|
---|
826 | N_("VDI: unsupported major version %u in '%s'"), GET_MAJOR_HEADER_VERSION(&pImage->Header), pImage->pszFilename);
|
---|
827 | }
|
---|
828 |
|
---|
829 | if (RT_SUCCESS(rc))
|
---|
830 | {
|
---|
831 | rc = vdiValidateHeader(&pImage->Header);
|
---|
832 | if (RT_SUCCESS(rc))
|
---|
833 | {
|
---|
834 | /* Setup image parameters by header. */
|
---|
835 | vdiSetupImageDesc(pImage);
|
---|
836 |
|
---|
837 | /*
|
---|
838 | * Until revision r111992 there was no check that the size was sector aligned
|
---|
839 | * when creating a new image and a bug in the VirtualBox GUI on OS X resulted
|
---|
840 | * in such images being created which caused issues when writing to the
|
---|
841 | * end of the image.
|
---|
842 | *
|
---|
843 | * Detect such images and repair the small damage by rounding down to the next
|
---|
844 | * aligned size. This is no problem as the guest would see a sector count
|
---|
845 | * only anyway from the device emulations so it already sees only the smaller
|
---|
846 | * size as result of the integer division of the size and sector size.
|
---|
847 | *
|
---|
848 | * This might not be written to the image if it is opened readonly
|
---|
849 | * which is not much of a problem because only writing to the last block
|
---|
850 | * causes trouble.
|
---|
851 | */
|
---|
852 | uint64_t cbDisk = getImageDiskSize(&pImage->Header);
|
---|
853 | if (cbDisk & 0x1ff)
|
---|
854 | setImageDiskSize(&pImage->Header, cbDisk & ~UINT64_C(0x1ff));
|
---|
855 | }
|
---|
856 | else
|
---|
857 | rc = vdIfError(pImage->pIfError, VERR_VD_VDI_INVALID_HEADER, RT_SRC_POS,
|
---|
858 | N_("VDI: invalid header in '%s'"), pImage->pszFilename);
|
---|
859 | }
|
---|
860 | }
|
---|
861 | else
|
---|
862 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: invalid pre-header in '%s'"), pImage->pszFilename);
|
---|
863 | }
|
---|
864 | else
|
---|
865 | {
|
---|
866 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error reading pre-header in '%s'"), pImage->pszFilename);
|
---|
867 | rc = VERR_VD_VDI_INVALID_HEADER;
|
---|
868 | }
|
---|
869 | }
|
---|
870 | else
|
---|
871 | {
|
---|
872 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error getting the image size in '%s'"), pImage->pszFilename);
|
---|
873 | rc = VERR_VD_VDI_INVALID_HEADER;
|
---|
874 | }
|
---|
875 |
|
---|
876 | return rc;
|
---|
877 | }
|
---|
878 |
|
---|
879 | /**
|
---|
880 | * Creates the back resolving table for the image for the discard operation.
|
---|
881 | *
|
---|
882 | * @returns VBox status code.
|
---|
883 | * @param pImage The VDI image descriptor.
|
---|
884 | */
|
---|
885 | static int vdiImageBackResolvTblCreate(PVDIIMAGEDESC pImage)
|
---|
886 | {
|
---|
887 | int rc = VINF_SUCCESS;
|
---|
888 |
|
---|
889 | /*
|
---|
890 | * Any error or inconsistency results in a fail because this might
|
---|
891 | * get us into trouble later on.
|
---|
892 | */
|
---|
893 | pImage->paBlocksRev = (unsigned *)RTMemAllocZ(sizeof(unsigned) * getImageBlocks(&pImage->Header));
|
---|
894 | if (pImage->paBlocksRev)
|
---|
895 | {
|
---|
896 | unsigned cBlocksAllocated = getImageBlocksAllocated(&pImage->Header);
|
---|
897 | unsigned cBlocks = getImageBlocks(&pImage->Header);
|
---|
898 |
|
---|
899 | for (unsigned i = 0; i < cBlocks; i++)
|
---|
900 | pImage->paBlocksRev[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
901 |
|
---|
902 | for (unsigned i = 0; i < cBlocks; i++)
|
---|
903 | {
|
---|
904 | VDIIMAGEBLOCKPOINTER ptrBlock = pImage->paBlocks[i];
|
---|
905 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(ptrBlock))
|
---|
906 | {
|
---|
907 | if (ptrBlock < cBlocksAllocated)
|
---|
908 | {
|
---|
909 | if (pImage->paBlocksRev[ptrBlock] == VDI_IMAGE_BLOCK_FREE)
|
---|
910 | pImage->paBlocksRev[ptrBlock] = i;
|
---|
911 | else
|
---|
912 | {
|
---|
913 | rc = VERR_VD_VDI_INVALID_HEADER;
|
---|
914 | break;
|
---|
915 | }
|
---|
916 | }
|
---|
917 | else
|
---|
918 | {
|
---|
919 | rc = VERR_VD_VDI_INVALID_HEADER;
|
---|
920 | break;
|
---|
921 | }
|
---|
922 | }
|
---|
923 | }
|
---|
924 | }
|
---|
925 | else
|
---|
926 | rc = VERR_NO_MEMORY;
|
---|
927 |
|
---|
928 | return rc;
|
---|
929 | }
|
---|
930 |
|
---|
931 | /**
|
---|
932 | * Internal: Open a VDI image.
|
---|
933 | */
|
---|
934 | static int vdiOpenImage(PVDIIMAGEDESC pImage, unsigned uOpenFlags)
|
---|
935 | {
|
---|
936 | pImage->uOpenFlags = uOpenFlags;
|
---|
937 |
|
---|
938 | pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
|
---|
939 | pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
|
---|
940 | AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
|
---|
941 |
|
---|
942 | /*
|
---|
943 | * Open the image.
|
---|
944 | */
|
---|
945 | int rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
|
---|
946 | VDOpenFlagsToFileOpenFlags(uOpenFlags, false /* fCreate */),
|
---|
947 | &pImage->pStorage);
|
---|
948 | if (RT_SUCCESS(rc))
|
---|
949 | {
|
---|
950 | rc = vdiImageReadHeader(pImage);
|
---|
951 | if (RT_SUCCESS(rc))
|
---|
952 | {
|
---|
953 | /* Allocate memory for blocks array. */
|
---|
954 | pImage->paBlocks = (PVDIIMAGEBLOCKPOINTER)RTMemAlloc(sizeof(VDIIMAGEBLOCKPOINTER) * getImageBlocks(&pImage->Header));
|
---|
955 | if (RT_LIKELY(pImage->paBlocks))
|
---|
956 | {
|
---|
957 | /* Read blocks array. */
|
---|
958 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, pImage->offStartBlocks, pImage->paBlocks,
|
---|
959 | getImageBlocks(&pImage->Header) * sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
960 | if (RT_SUCCESS(rc))
|
---|
961 | {
|
---|
962 | vdiConvBlocksEndianess(VDIECONV_F2H, pImage->paBlocks, getImageBlocks(&pImage->Header));
|
---|
963 |
|
---|
964 | if (uOpenFlags & VD_OPEN_FLAGS_DISCARD)
|
---|
965 | rc = vdiImageBackResolvTblCreate(pImage);
|
---|
966 | }
|
---|
967 | else
|
---|
968 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: Error reading the block table in '%s'"), pImage->pszFilename);
|
---|
969 | }
|
---|
970 | else
|
---|
971 | rc = vdIfError(pImage->pIfError, VERR_NO_MEMORY, RT_SRC_POS,
|
---|
972 | N_("VDI: Error allocating memory for the block table in '%s'"), pImage->pszFilename);;
|
---|
973 | }
|
---|
974 | }
|
---|
975 | /* else: Do NOT signal an appropriate error here, as the VD layer has the
|
---|
976 | * choice of retrying the open if it failed. */
|
---|
977 |
|
---|
978 | if (RT_SUCCESS(rc))
|
---|
979 | {
|
---|
980 | PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
|
---|
981 | pImage->RegionList.fFlags = 0;
|
---|
982 | pImage->RegionList.cRegions = 1;
|
---|
983 |
|
---|
984 | pRegion->offRegion = 0; /* Disk start. */
|
---|
985 | pRegion->cbBlock = 512;
|
---|
986 | pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
|
---|
987 | pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
|
---|
988 | pRegion->cbData = 512;
|
---|
989 | pRegion->cbMetadata = 0;
|
---|
990 | pRegion->cRegionBlocksOrBytes = getImageDiskSize(&pImage->Header);
|
---|
991 | }
|
---|
992 | else
|
---|
993 | vdiFreeImage(pImage, false);
|
---|
994 | return rc;
|
---|
995 | }
|
---|
996 |
|
---|
997 | /**
|
---|
998 | * Internal: Save header to file.
|
---|
999 | */
|
---|
1000 | static int vdiUpdateHeader(PVDIIMAGEDESC pImage)
|
---|
1001 | {
|
---|
1002 | int rc;
|
---|
1003 | switch (GET_MAJOR_HEADER_VERSION(&pImage->Header))
|
---|
1004 | {
|
---|
1005 | case 0:
|
---|
1006 | {
|
---|
1007 | VDIHEADER0 Hdr;
|
---|
1008 | vdiConvHeaderEndianessV0(VDIECONV_H2F, &Hdr, &pImage->Header.u.v0);
|
---|
1009 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, sizeof(VDIPREHEADER),
|
---|
1010 | &Hdr, sizeof(Hdr));
|
---|
1011 | break;
|
---|
1012 | }
|
---|
1013 | case 1:
|
---|
1014 | if (pImage->Header.u.v1plus.cbHeader < sizeof(pImage->Header.u.v1plus))
|
---|
1015 | {
|
---|
1016 | VDIHEADER1 Hdr;
|
---|
1017 | vdiConvHeaderEndianessV1(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1);
|
---|
1018 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, sizeof(VDIPREHEADER),
|
---|
1019 | &Hdr, sizeof(Hdr));
|
---|
1020 | }
|
---|
1021 | else
|
---|
1022 | {
|
---|
1023 | VDIHEADER1PLUS Hdr;
|
---|
1024 | vdiConvHeaderEndianessV1p(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1plus);
|
---|
1025 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, sizeof(VDIPREHEADER),
|
---|
1026 | &Hdr, sizeof(Hdr));
|
---|
1027 | }
|
---|
1028 | break;
|
---|
1029 | default:
|
---|
1030 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
1031 | break;
|
---|
1032 | }
|
---|
1033 | AssertMsgRC(rc, ("vdiUpdateHeader failed, filename=\"%s\" rc=%Rrc\n", pImage->pszFilename, rc));
|
---|
1034 | return rc;
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | /**
|
---|
1038 | * Internal: Save header to file - async version.
|
---|
1039 | */
|
---|
1040 | static int vdiUpdateHeaderAsync(PVDIIMAGEDESC pImage, PVDIOCTX pIoCtx)
|
---|
1041 | {
|
---|
1042 | int rc;
|
---|
1043 | switch (GET_MAJOR_HEADER_VERSION(&pImage->Header))
|
---|
1044 | {
|
---|
1045 | case 0:
|
---|
1046 | {
|
---|
1047 | VDIHEADER0 Hdr;
|
---|
1048 | vdiConvHeaderEndianessV0(VDIECONV_H2F, &Hdr, &pImage->Header.u.v0);
|
---|
1049 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
1050 | sizeof(VDIPREHEADER), &Hdr, sizeof(Hdr),
|
---|
1051 | pIoCtx, NULL, NULL);
|
---|
1052 | break;
|
---|
1053 | }
|
---|
1054 | case 1:
|
---|
1055 | if (pImage->Header.u.v1plus.cbHeader < sizeof(pImage->Header.u.v1plus))
|
---|
1056 | {
|
---|
1057 | VDIHEADER1 Hdr;
|
---|
1058 | vdiConvHeaderEndianessV1(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1);
|
---|
1059 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
1060 | sizeof(VDIPREHEADER), &Hdr, sizeof(Hdr),
|
---|
1061 | pIoCtx, NULL, NULL);
|
---|
1062 | }
|
---|
1063 | else
|
---|
1064 | {
|
---|
1065 | VDIHEADER1PLUS Hdr;
|
---|
1066 | vdiConvHeaderEndianessV1p(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1plus);
|
---|
1067 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
1068 | sizeof(VDIPREHEADER), &Hdr, sizeof(Hdr),
|
---|
1069 | pIoCtx, NULL, NULL);
|
---|
1070 | }
|
---|
1071 | break;
|
---|
1072 | default:
|
---|
1073 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
1074 | break;
|
---|
1075 | }
|
---|
1076 | AssertMsg(RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS,
|
---|
1077 | ("vdiUpdateHeader failed, filename=\"%s\" rc=%Rrc\n", pImage->pszFilename, rc));
|
---|
1078 | return rc;
|
---|
1079 | }
|
---|
1080 |
|
---|
1081 | /**
|
---|
1082 | * Internal: Save block pointer to file, save header to file.
|
---|
1083 | */
|
---|
1084 | static int vdiUpdateBlockInfo(PVDIIMAGEDESC pImage, unsigned uBlock)
|
---|
1085 | {
|
---|
1086 | /* Update image header. */
|
---|
1087 | int rc = vdiUpdateHeader(pImage);
|
---|
1088 | if (RT_SUCCESS(rc))
|
---|
1089 | {
|
---|
1090 | /* write only one block pointer. */
|
---|
1091 | VDIIMAGEBLOCKPOINTER ptrBlock = RT_H2LE_U32(pImage->paBlocks[uBlock]);
|
---|
1092 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
|
---|
1093 | pImage->offStartBlocks + uBlock * sizeof(VDIIMAGEBLOCKPOINTER),
|
---|
1094 | &ptrBlock, sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
1095 | AssertMsgRC(rc, ("vdiUpdateBlockInfo failed to update block=%u, filename=\"%s\", rc=%Rrc\n",
|
---|
1096 | uBlock, pImage->pszFilename, rc));
|
---|
1097 | }
|
---|
1098 | return rc;
|
---|
1099 | }
|
---|
1100 |
|
---|
1101 | /**
|
---|
1102 | * Internal: Save block pointer to file, save header to file - async version.
|
---|
1103 | */
|
---|
1104 | static int vdiUpdateBlockInfoAsync(PVDIIMAGEDESC pImage, unsigned uBlock,
|
---|
1105 | PVDIOCTX pIoCtx, bool fUpdateHdr)
|
---|
1106 | {
|
---|
1107 | int rc = VINF_SUCCESS;
|
---|
1108 |
|
---|
1109 | /* Update image header. */
|
---|
1110 | if (fUpdateHdr)
|
---|
1111 | rc = vdiUpdateHeaderAsync(pImage, pIoCtx);
|
---|
1112 |
|
---|
1113 | if (RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
1114 | {
|
---|
1115 | /* write only one block pointer. */
|
---|
1116 | VDIIMAGEBLOCKPOINTER ptrBlock = RT_H2LE_U32(pImage->paBlocks[uBlock]);
|
---|
1117 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
1118 | pImage->offStartBlocks + uBlock * sizeof(VDIIMAGEBLOCKPOINTER),
|
---|
1119 | &ptrBlock, sizeof(VDIIMAGEBLOCKPOINTER),
|
---|
1120 | pIoCtx, NULL, NULL);
|
---|
1121 | AssertMsg(RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS,
|
---|
1122 | ("vdiUpdateBlockInfo failed to update block=%u, filename=\"%s\", rc=%Rrc\n",
|
---|
1123 | uBlock, pImage->pszFilename, rc));
|
---|
1124 | }
|
---|
1125 | return rc;
|
---|
1126 | }
|
---|
1127 |
|
---|
1128 | /**
|
---|
1129 | * Internal: Flush the image file to disk - async version.
|
---|
1130 | */
|
---|
1131 | static int vdiFlushImageIoCtx(PVDIIMAGEDESC pImage, PVDIOCTX pIoCtx)
|
---|
1132 | {
|
---|
1133 | int rc = VINF_SUCCESS;
|
---|
1134 |
|
---|
1135 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
1136 | {
|
---|
1137 | /* Save header. */
|
---|
1138 | rc = vdiUpdateHeaderAsync(pImage, pIoCtx);
|
---|
1139 | AssertMsg(RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS,
|
---|
1140 | ("vdiUpdateHeaderAsync() failed, filename=\"%s\", rc=%Rrc\n",
|
---|
1141 | pImage->pszFilename, rc));
|
---|
1142 | rc = vdIfIoIntFileFlush(pImage->pIfIo, pImage->pStorage, pIoCtx, NULL, NULL);
|
---|
1143 | AssertMsg(RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS,
|
---|
1144 | ("Flushing data to disk failed rc=%Rrc\n", rc));
|
---|
1145 | }
|
---|
1146 |
|
---|
1147 | return rc;
|
---|
1148 | }
|
---|
1149 |
|
---|
1150 | /**
|
---|
1151 | * Completion callback for meta/userdata reads or writes.
|
---|
1152 | *
|
---|
1153 | * @return VBox status code.
|
---|
1154 | * VINF_SUCCESS if everything was successful and the transfer can continue.
|
---|
1155 | * VERR_VD_ASYNC_IO_IN_PROGRESS if there is another data transfer pending.
|
---|
1156 | * @param pBackendData The opaque backend data.
|
---|
1157 | * @param pIoCtx I/O context associated with this request.
|
---|
1158 | * @param pvUser Opaque user data passed during a read/write request.
|
---|
1159 | * @param rcReq Status code for the completed request.
|
---|
1160 | */
|
---|
1161 | static DECLCALLBACK(int) vdiDiscardBlockAsyncUpdate(void *pBackendData, PVDIOCTX pIoCtx, void *pvUser, int rcReq)
|
---|
1162 | {
|
---|
1163 | RT_NOREF1(rcReq);
|
---|
1164 | int rc = VINF_SUCCESS;
|
---|
1165 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1166 | PVDIBLOCKDISCARDASYNC pDiscardAsync = (PVDIBLOCKDISCARDASYNC)pvUser;
|
---|
1167 |
|
---|
1168 | switch (pDiscardAsync->enmState)
|
---|
1169 | {
|
---|
1170 | case VDIBLOCKDISCARDSTATE_READ_BLOCK:
|
---|
1171 | {
|
---|
1172 | PVDMETAXFER pMetaXfer;
|
---|
1173 | uint64_t u64Offset = (uint64_t)pDiscardAsync->idxLastBlock * pImage->cbTotalBlockData + pImage->offStartData;
|
---|
1174 | rc = vdIfIoIntFileReadMeta(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
1175 | pDiscardAsync->pvBlock, pImage->cbTotalBlockData, pIoCtx,
|
---|
1176 | &pMetaXfer, vdiDiscardBlockAsyncUpdate, pDiscardAsync);
|
---|
1177 | if (RT_FAILURE(rc))
|
---|
1178 | break;
|
---|
1179 |
|
---|
1180 | /* Release immediately and go to next step. */
|
---|
1181 | vdIfIoIntMetaXferRelease(pImage->pIfIo, pMetaXfer);
|
---|
1182 | pDiscardAsync->enmState = VDIBLOCKDISCARDSTATE_WRITE_BLOCK;
|
---|
1183 | }
|
---|
1184 | /* fall thru */
|
---|
1185 | case VDIBLOCKDISCARDSTATE_WRITE_BLOCK:
|
---|
1186 | {
|
---|
1187 | /* Block read complete. Write to the new location (discarded block). */
|
---|
1188 | uint64_t u64Offset = (uint64_t)pDiscardAsync->ptrBlockDiscard * pImage->cbTotalBlockData + pImage->offStartData;
|
---|
1189 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
1190 | pDiscardAsync->pvBlock, pImage->cbTotalBlockData, pIoCtx,
|
---|
1191 | vdiDiscardBlockAsyncUpdate, pDiscardAsync);
|
---|
1192 |
|
---|
1193 | pDiscardAsync->enmState = VDIBLOCKDISCARDSTATE_UPDATE_METADATA;
|
---|
1194 | if (RT_FAILURE(rc))
|
---|
1195 | break;
|
---|
1196 | }
|
---|
1197 | /* fall thru */
|
---|
1198 | case VDIBLOCKDISCARDSTATE_UPDATE_METADATA:
|
---|
1199 | {
|
---|
1200 | int rc2;
|
---|
1201 |
|
---|
1202 | /* Block write complete. Update metadata. */
|
---|
1203 | pImage->paBlocksRev[pDiscardAsync->idxLastBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
1204 | pImage->paBlocks[pDiscardAsync->uBlock] = VDI_IMAGE_BLOCK_ZERO;
|
---|
1205 |
|
---|
1206 | if (pDiscardAsync->idxLastBlock != pDiscardAsync->ptrBlockDiscard)
|
---|
1207 | {
|
---|
1208 | pImage->paBlocks[pDiscardAsync->uBlockLast] = pDiscardAsync->ptrBlockDiscard;
|
---|
1209 | pImage->paBlocksRev[pDiscardAsync->ptrBlockDiscard] = pDiscardAsync->uBlockLast;
|
---|
1210 |
|
---|
1211 | rc = vdiUpdateBlockInfoAsync(pImage, pDiscardAsync->uBlockLast, pIoCtx, false /* fUpdateHdr */);
|
---|
1212 | if ( RT_FAILURE(rc)
|
---|
1213 | && rc != VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
1214 | break;
|
---|
1215 | }
|
---|
1216 |
|
---|
1217 | setImageBlocksAllocated(&pImage->Header, pDiscardAsync->idxLastBlock);
|
---|
1218 | rc = vdiUpdateBlockInfoAsync(pImage, pDiscardAsync->uBlock, pIoCtx, true /* fUpdateHdr */);
|
---|
1219 | if ( RT_FAILURE(rc)
|
---|
1220 | && rc != VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
1221 | break;
|
---|
1222 |
|
---|
1223 | pImage->cbImage -= pImage->cbTotalBlockData;
|
---|
1224 | LogFlowFunc(("Set new size %llu\n", pImage->cbImage));
|
---|
1225 | rc2 = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, pImage->cbImage);
|
---|
1226 | if (RT_FAILURE(rc2))
|
---|
1227 | rc = rc2;
|
---|
1228 |
|
---|
1229 | /* Free discard state. */
|
---|
1230 | RTMemFree(pDiscardAsync->pvBlock);
|
---|
1231 | RTMemFree(pDiscardAsync);
|
---|
1232 | break;
|
---|
1233 | }
|
---|
1234 | default:
|
---|
1235 | AssertMsgFailed(("Invalid state %d\n", pDiscardAsync->enmState));
|
---|
1236 | }
|
---|
1237 |
|
---|
1238 | if (rc == VERR_VD_NOT_ENOUGH_METADATA)
|
---|
1239 | rc = VERR_VD_ASYNC_IO_IN_PROGRESS;
|
---|
1240 |
|
---|
1241 | return rc;
|
---|
1242 | }
|
---|
1243 |
|
---|
1244 | /**
|
---|
1245 | * Internal: Discard a whole block from the image filling the created hole with
|
---|
1246 | * data from another block - async I/O version.
|
---|
1247 | *
|
---|
1248 | * @returns VBox status code.
|
---|
1249 | * @param pImage VDI image instance data.
|
---|
1250 | * @param pIoCtx I/O context associated with this request.
|
---|
1251 | * @param uBlock The block to discard.
|
---|
1252 | * @param pvBlock Memory to use for the I/O.
|
---|
1253 | */
|
---|
1254 | static int vdiDiscardBlockAsync(PVDIIMAGEDESC pImage, PVDIOCTX pIoCtx,
|
---|
1255 | unsigned uBlock, void *pvBlock)
|
---|
1256 | {
|
---|
1257 | int rc = VINF_SUCCESS;
|
---|
1258 | PVDIBLOCKDISCARDASYNC pDiscardAsync = NULL;
|
---|
1259 |
|
---|
1260 | LogFlowFunc(("pImage=%#p uBlock=%u pvBlock=%#p\n",
|
---|
1261 | pImage, uBlock, pvBlock));
|
---|
1262 |
|
---|
1263 | pDiscardAsync = (PVDIBLOCKDISCARDASYNC)RTMemAllocZ(sizeof(VDIBLOCKDISCARDASYNC));
|
---|
1264 | if (RT_UNLIKELY(!pDiscardAsync))
|
---|
1265 | return VERR_NO_MEMORY;
|
---|
1266 |
|
---|
1267 | /* Init block discard state. */
|
---|
1268 | pDiscardAsync->uBlock = uBlock;
|
---|
1269 | pDiscardAsync->pvBlock = pvBlock;
|
---|
1270 | pDiscardAsync->ptrBlockDiscard = pImage->paBlocks[uBlock];
|
---|
1271 | pDiscardAsync->idxLastBlock = getImageBlocksAllocated(&pImage->Header) - 1;
|
---|
1272 | pDiscardAsync->uBlockLast = pImage->paBlocksRev[pDiscardAsync->idxLastBlock];
|
---|
1273 |
|
---|
1274 | /*
|
---|
1275 | * The block is empty, remove it.
|
---|
1276 | * Read the last block of the image first.
|
---|
1277 | */
|
---|
1278 | if (pDiscardAsync->idxLastBlock != pDiscardAsync->ptrBlockDiscard)
|
---|
1279 | {
|
---|
1280 | LogFlowFunc(("Moving block [%u]=%u into [%u]=%u\n",
|
---|
1281 | pDiscardAsync->uBlockLast, pDiscardAsync->idxLastBlock,
|
---|
1282 | uBlock, pImage->paBlocks[uBlock]));
|
---|
1283 | pDiscardAsync->enmState = VDIBLOCKDISCARDSTATE_READ_BLOCK;
|
---|
1284 | }
|
---|
1285 | else
|
---|
1286 | {
|
---|
1287 | pDiscardAsync->enmState = VDIBLOCKDISCARDSTATE_UPDATE_METADATA; /* Start immediately to shrink the image. */
|
---|
1288 | LogFlowFunc(("Discard last block [%u]=%u\n", uBlock, pImage->paBlocks[uBlock]));
|
---|
1289 | }
|
---|
1290 |
|
---|
1291 | /* Call the update callback directly. */
|
---|
1292 | rc = vdiDiscardBlockAsyncUpdate(pImage, pIoCtx, pDiscardAsync, VINF_SUCCESS);
|
---|
1293 |
|
---|
1294 | LogFlowFunc(("returns rc=%Rrc\n", rc));
|
---|
1295 | return rc;
|
---|
1296 | }
|
---|
1297 |
|
---|
1298 | /**
|
---|
1299 | * Internal: Creates a allocation bitmap from the given data.
|
---|
1300 | * Sectors which contain only 0 are marked as unallocated and sectors with
|
---|
1301 | * other data as allocated.
|
---|
1302 | *
|
---|
1303 | * @returns Pointer to the allocation bitmap or NULL on failure.
|
---|
1304 | * @param pvData The data to create the allocation bitmap for.
|
---|
1305 | * @param cbData Number of bytes in the buffer.
|
---|
1306 | */
|
---|
1307 | static void *vdiAllocationBitmapCreate(void *pvData, size_t cbData)
|
---|
1308 | {
|
---|
1309 | Assert(cbData <= UINT32_MAX / 8);
|
---|
1310 | uint32_t cSectors = (uint32_t)(cbData / 512);
|
---|
1311 | uint32_t uSectorCur = 0;
|
---|
1312 | void *pbmAllocationBitmap = NULL;
|
---|
1313 |
|
---|
1314 | Assert(!(cbData % 512));
|
---|
1315 | Assert(!(cSectors % 8));
|
---|
1316 |
|
---|
1317 | pbmAllocationBitmap = RTMemAllocZ(cSectors / 8);
|
---|
1318 | if (!pbmAllocationBitmap)
|
---|
1319 | return NULL;
|
---|
1320 |
|
---|
1321 | while (uSectorCur < cSectors)
|
---|
1322 | {
|
---|
1323 | int idxSet = ASMBitFirstSet((uint8_t *)pvData + uSectorCur * 512, (uint32_t)cbData * 8);
|
---|
1324 |
|
---|
1325 | if (idxSet != -1)
|
---|
1326 | {
|
---|
1327 | unsigned idxSectorAlloc = idxSet / 8 / 512;
|
---|
1328 | ASMBitSet(pbmAllocationBitmap, uSectorCur + idxSectorAlloc);
|
---|
1329 |
|
---|
1330 | uSectorCur += idxSectorAlloc + 1;
|
---|
1331 | cbData -= (idxSectorAlloc + 1) * 512;
|
---|
1332 | }
|
---|
1333 | else
|
---|
1334 | break;
|
---|
1335 | }
|
---|
1336 |
|
---|
1337 | return pbmAllocationBitmap;
|
---|
1338 | }
|
---|
1339 |
|
---|
1340 |
|
---|
1341 | /**
|
---|
1342 | * Updates the state of the async cluster allocation.
|
---|
1343 | *
|
---|
1344 | * @returns VBox status code.
|
---|
1345 | * @param pBackendData The opaque backend data.
|
---|
1346 | * @param pIoCtx I/O context associated with this request.
|
---|
1347 | * @param pvUser Opaque user data passed during a read/write request.
|
---|
1348 | * @param rcReq Status code for the completed request.
|
---|
1349 | */
|
---|
1350 | static DECLCALLBACK(int) vdiBlockAllocUpdate(void *pBackendData, PVDIOCTX pIoCtx, void *pvUser, int rcReq)
|
---|
1351 | {
|
---|
1352 | int rc = VINF_SUCCESS;
|
---|
1353 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1354 | PVDIASYNCBLOCKALLOC pBlockAlloc = (PVDIASYNCBLOCKALLOC)pvUser;
|
---|
1355 |
|
---|
1356 | if (RT_SUCCESS(rcReq))
|
---|
1357 | {
|
---|
1358 | pImage->cbImage += pImage->cbTotalBlockData;
|
---|
1359 | pImage->paBlocks[pBlockAlloc->uBlock] = pBlockAlloc->cBlocksAllocated;
|
---|
1360 |
|
---|
1361 | if (pImage->paBlocksRev)
|
---|
1362 | pImage->paBlocksRev[pBlockAlloc->cBlocksAllocated] = pBlockAlloc->uBlock;
|
---|
1363 |
|
---|
1364 | setImageBlocksAllocated(&pImage->Header, pBlockAlloc->cBlocksAllocated + 1);
|
---|
1365 | rc = vdiUpdateBlockInfoAsync(pImage, pBlockAlloc->uBlock, pIoCtx,
|
---|
1366 | true /* fUpdateHdr */);
|
---|
1367 | }
|
---|
1368 | /* else: I/O error don't update the block table. */
|
---|
1369 |
|
---|
1370 | RTMemFree(pBlockAlloc);
|
---|
1371 | return rc;
|
---|
1372 | }
|
---|
1373 |
|
---|
1374 | /** @copydoc VDIMAGEBACKEND::pfnProbe */
|
---|
1375 | static DECLCALLBACK(int) vdiProbe(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
|
---|
1376 | PVDINTERFACE pVDIfsImage, VDTYPE *penmType)
|
---|
1377 | {
|
---|
1378 | LogFlowFunc(("pszFilename=\"%s\"\n", pszFilename));
|
---|
1379 | int rc = VINF_SUCCESS;
|
---|
1380 |
|
---|
1381 | AssertReturn((VALID_PTR(pszFilename) && *pszFilename), VERR_INVALID_PARAMETER);
|
---|
1382 |
|
---|
1383 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)RTMemAllocZ(sizeof(VDIIMAGEDESC));
|
---|
1384 | if (RT_LIKELY(pImage))
|
---|
1385 | {
|
---|
1386 | pImage->pszFilename = pszFilename;
|
---|
1387 | pImage->pStorage = NULL;
|
---|
1388 | pImage->paBlocks = NULL;
|
---|
1389 | pImage->pVDIfsDisk = pVDIfsDisk;
|
---|
1390 | pImage->pVDIfsImage = pVDIfsImage;
|
---|
1391 |
|
---|
1392 | rc = vdiOpenImage(pImage, VD_OPEN_FLAGS_INFO | VD_OPEN_FLAGS_READONLY);
|
---|
1393 | vdiFreeImage(pImage, false);
|
---|
1394 | RTMemFree(pImage);
|
---|
1395 |
|
---|
1396 | if (RT_SUCCESS(rc))
|
---|
1397 | *penmType = VDTYPE_HDD;
|
---|
1398 | }
|
---|
1399 | else
|
---|
1400 | rc = VERR_NO_MEMORY;
|
---|
1401 |
|
---|
1402 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1403 | return rc;
|
---|
1404 | }
|
---|
1405 |
|
---|
1406 | /** @copydoc VDIMAGEBACKEND::pfnOpen */
|
---|
1407 | static DECLCALLBACK(int) vdiOpen(const char *pszFilename, unsigned uOpenFlags,
|
---|
1408 | PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
|
---|
1409 | VDTYPE enmType, void **ppBackendData)
|
---|
1410 | {
|
---|
1411 | RT_NOREF1(enmType); /**< @todo r=klaus make use of the type info. */
|
---|
1412 |
|
---|
1413 | LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x pVDIfsDisk=%#p pVDIfsImage=%#p enmType=%u ppBackendData=%#p\n",
|
---|
1414 | pszFilename, uOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData));
|
---|
1415 | int rc;
|
---|
1416 |
|
---|
1417 | /* Check open flags. All valid flags are supported. */
|
---|
1418 | AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
|
---|
1419 | AssertReturn((VALID_PTR(pszFilename) && *pszFilename), VERR_INVALID_PARAMETER);
|
---|
1420 |
|
---|
1421 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)RTMemAllocZ(RT_UOFFSETOF(VDIIMAGEDESC, RegionList.aRegions[1]));
|
---|
1422 | if (RT_LIKELY(pImage))
|
---|
1423 | {
|
---|
1424 | pImage->pszFilename = pszFilename;
|
---|
1425 | pImage->pStorage = NULL;
|
---|
1426 | pImage->paBlocks = NULL;
|
---|
1427 | pImage->pVDIfsDisk = pVDIfsDisk;
|
---|
1428 | pImage->pVDIfsImage = pVDIfsImage;
|
---|
1429 |
|
---|
1430 | rc = vdiOpenImage(pImage, uOpenFlags);
|
---|
1431 | if (RT_SUCCESS(rc))
|
---|
1432 | *ppBackendData = pImage;
|
---|
1433 | else
|
---|
1434 | RTMemFree(pImage);
|
---|
1435 | }
|
---|
1436 | else
|
---|
1437 | rc = VERR_NO_MEMORY;
|
---|
1438 |
|
---|
1439 | LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
|
---|
1440 | return rc;
|
---|
1441 | }
|
---|
1442 |
|
---|
1443 | /** @copydoc VDIMAGEBACKEND::pfnCreate */
|
---|
1444 | static DECLCALLBACK(int) vdiCreate(const char *pszFilename, uint64_t cbSize,
|
---|
1445 | unsigned uImageFlags, const char *pszComment,
|
---|
1446 | PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
|
---|
1447 | PCRTUUID pUuid, unsigned uOpenFlags,
|
---|
1448 | unsigned uPercentStart, unsigned uPercentSpan,
|
---|
1449 | PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
|
---|
1450 | PVDINTERFACE pVDIfsOperation, VDTYPE enmType,
|
---|
1451 | void **ppBackendData)
|
---|
1452 | {
|
---|
1453 | 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\n",
|
---|
1454 | pszFilename, cbSize, uImageFlags, pszComment, pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags, uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation, enmType, ppBackendData));
|
---|
1455 | int rc;
|
---|
1456 |
|
---|
1457 | /* Check the VD container type and image flags. */
|
---|
1458 | if ( enmType != VDTYPE_HDD
|
---|
1459 | || (uImageFlags & ~VD_VDI_IMAGE_FLAGS_MASK) != 0)
|
---|
1460 | return VERR_VD_INVALID_TYPE;
|
---|
1461 |
|
---|
1462 | /* Check size. Maximum 4PB-3M. No tricks with adjusting the 1M block size
|
---|
1463 | * so far, which would extend the size. */
|
---|
1464 | if ( !cbSize
|
---|
1465 | || cbSize >= _1P * 4 - _1M * 3
|
---|
1466 | || cbSize < VDI_IMAGE_DEFAULT_BLOCK_SIZE
|
---|
1467 | || (cbSize % 512))
|
---|
1468 | return VERR_VD_INVALID_SIZE;
|
---|
1469 |
|
---|
1470 | /* Check open flags. All valid flags are supported. */
|
---|
1471 | AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
|
---|
1472 | AssertReturn( VALID_PTR(pszFilename)
|
---|
1473 | && *pszFilename
|
---|
1474 | && VALID_PTR(pPCHSGeometry)
|
---|
1475 | && VALID_PTR(pLCHSGeometry), VERR_INVALID_PARAMETER);
|
---|
1476 |
|
---|
1477 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)RTMemAllocZ(RT_UOFFSETOF(VDIIMAGEDESC, RegionList.aRegions[1]));
|
---|
1478 | if (RT_LIKELY(pImage))
|
---|
1479 | {
|
---|
1480 | PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation);
|
---|
1481 | PVDINTERFACECONFIG pIfCfg = VDIfConfigGet(pVDIfsOperation);
|
---|
1482 |
|
---|
1483 | pImage->pszFilename = pszFilename;
|
---|
1484 | pImage->pStorage = NULL;
|
---|
1485 | pImage->paBlocks = NULL;
|
---|
1486 | pImage->pVDIfsDisk = pVDIfsDisk;
|
---|
1487 | pImage->pVDIfsImage = pVDIfsImage;
|
---|
1488 |
|
---|
1489 | rc = vdiCreateImage(pImage, cbSize, uImageFlags, pszComment,
|
---|
1490 | pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags,
|
---|
1491 | pIfProgress, uPercentStart, uPercentSpan, pIfCfg);
|
---|
1492 | if (RT_SUCCESS(rc))
|
---|
1493 | {
|
---|
1494 | /* So far the image is opened in read/write mode. Make sure the
|
---|
1495 | * image is opened in read-only mode if the caller requested that. */
|
---|
1496 | if (uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
1497 | {
|
---|
1498 | vdiFreeImage(pImage, false);
|
---|
1499 | rc = vdiOpenImage(pImage, uOpenFlags);
|
---|
1500 | }
|
---|
1501 |
|
---|
1502 | if (RT_SUCCESS(rc))
|
---|
1503 | *ppBackendData = pImage;
|
---|
1504 | }
|
---|
1505 |
|
---|
1506 | if (RT_FAILURE(rc))
|
---|
1507 | RTMemFree(pImage);
|
---|
1508 | }
|
---|
1509 | else
|
---|
1510 | rc = VERR_NO_MEMORY;
|
---|
1511 |
|
---|
1512 | LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
|
---|
1513 | return rc;
|
---|
1514 | }
|
---|
1515 |
|
---|
1516 | /** @copydoc VDIMAGEBACKEND::pfnRename */
|
---|
1517 | static DECLCALLBACK(int) vdiRename(void *pBackendData, const char *pszFilename)
|
---|
1518 | {
|
---|
1519 | LogFlowFunc(("pBackendData=%#p pszFilename=%#p\n", pBackendData, pszFilename));
|
---|
1520 | int rc = VINF_SUCCESS;
|
---|
1521 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1522 |
|
---|
1523 | /* Check arguments. */
|
---|
1524 | AssertReturn((pImage && pszFilename && *pszFilename), VERR_INVALID_PARAMETER);
|
---|
1525 |
|
---|
1526 | /* Close the image. */
|
---|
1527 | rc = vdiFreeImage(pImage, false);
|
---|
1528 | if (RT_SUCCESS(rc))
|
---|
1529 | {
|
---|
1530 | /* Rename the file. */
|
---|
1531 | rc = vdIfIoIntFileMove(pImage->pIfIo, pImage->pszFilename, pszFilename, 0);
|
---|
1532 | if (RT_SUCCESS(rc))
|
---|
1533 | {
|
---|
1534 | /* Update pImage with the new information. */
|
---|
1535 | pImage->pszFilename = pszFilename;
|
---|
1536 |
|
---|
1537 | /* Open the new image. */
|
---|
1538 | rc = vdiOpenImage(pImage, pImage->uOpenFlags);
|
---|
1539 | }
|
---|
1540 | else
|
---|
1541 | {
|
---|
1542 | /* The move failed, try to reopen the original image. */
|
---|
1543 | int rc2 = vdiOpenImage(pImage, pImage->uOpenFlags);
|
---|
1544 | if (RT_FAILURE(rc2))
|
---|
1545 | rc = rc2;
|
---|
1546 | }
|
---|
1547 | }
|
---|
1548 |
|
---|
1549 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1550 | return rc;
|
---|
1551 | }
|
---|
1552 |
|
---|
1553 | /** @copydoc VDIMAGEBACKEND::pfnClose */
|
---|
1554 | static DECLCALLBACK(int) vdiClose(void *pBackendData, bool fDelete)
|
---|
1555 | {
|
---|
1556 | LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete));
|
---|
1557 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1558 |
|
---|
1559 | int rc = vdiFreeImage(pImage, fDelete);
|
---|
1560 | RTMemFree(pImage);
|
---|
1561 |
|
---|
1562 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1563 | return rc;
|
---|
1564 | }
|
---|
1565 |
|
---|
1566 | static DECLCALLBACK(int) vdiRead(void *pBackendData, uint64_t uOffset, size_t cbToRead,
|
---|
1567 | PVDIOCTX pIoCtx, size_t *pcbActuallyRead)
|
---|
1568 | {
|
---|
1569 | LogFlowFunc(("pBackendData=%#p uOffset=%llu pIoCtx=%#p cbToRead=%zu pcbActuallyRead=%#p\n",
|
---|
1570 | pBackendData, uOffset, pIoCtx, cbToRead, pcbActuallyRead));
|
---|
1571 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1572 | unsigned uBlock;
|
---|
1573 | unsigned offRead;
|
---|
1574 | int rc = VINF_SUCCESS;
|
---|
1575 |
|
---|
1576 | AssertPtr(pImage);
|
---|
1577 | Assert(!(uOffset % 512));
|
---|
1578 | Assert(!(cbToRead % 512));
|
---|
1579 | AssertReturn((VALID_PTR(pIoCtx) && cbToRead), VERR_INVALID_PARAMETER);
|
---|
1580 | AssertReturn(uOffset + cbToRead <= getImageDiskSize(&pImage->Header), VERR_INVALID_PARAMETER);
|
---|
1581 |
|
---|
1582 | /* Calculate starting block number and offset inside it. */
|
---|
1583 | uBlock = (unsigned)(uOffset >> pImage->uShiftOffset2Index);
|
---|
1584 | offRead = (unsigned)uOffset & pImage->uBlockMask;
|
---|
1585 |
|
---|
1586 | /* Clip read range to at most the rest of the block. */
|
---|
1587 | cbToRead = RT_MIN(cbToRead, getImageBlockSize(&pImage->Header) - offRead);
|
---|
1588 | Assert(!(cbToRead % 512));
|
---|
1589 |
|
---|
1590 | if (pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_FREE)
|
---|
1591 | rc = VERR_VD_BLOCK_FREE;
|
---|
1592 | else if (pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_ZERO)
|
---|
1593 | {
|
---|
1594 | size_t cbSet;
|
---|
1595 |
|
---|
1596 | cbSet = vdIfIoIntIoCtxSet(pImage->pIfIo, pIoCtx, 0, cbToRead);
|
---|
1597 | Assert(cbSet == cbToRead);
|
---|
1598 | }
|
---|
1599 | else
|
---|
1600 | {
|
---|
1601 | /* Block present in image file, read relevant data. */
|
---|
1602 | uint64_t u64Offset = (uint64_t)pImage->paBlocks[uBlock] * pImage->cbTotalBlockData
|
---|
1603 | + (pImage->offStartData + pImage->offStartBlockData + offRead);
|
---|
1604 |
|
---|
1605 | if (u64Offset + cbToRead <= pImage->cbImage)
|
---|
1606 | rc = vdIfIoIntFileReadUser(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
1607 | pIoCtx, cbToRead);
|
---|
1608 | else
|
---|
1609 | {
|
---|
1610 | LogRel(("VDI: Out of range access (%llu) in image %s, image size %llu\n",
|
---|
1611 | u64Offset, pImage->pszFilename, pImage->cbImage));
|
---|
1612 | vdIfIoIntIoCtxSet(pImage->pIfIo, pIoCtx, 0, cbToRead);
|
---|
1613 | rc = VERR_VD_READ_OUT_OF_RANGE;
|
---|
1614 | }
|
---|
1615 | }
|
---|
1616 |
|
---|
1617 | if (pcbActuallyRead)
|
---|
1618 | *pcbActuallyRead = cbToRead;
|
---|
1619 |
|
---|
1620 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1621 | return rc;
|
---|
1622 | }
|
---|
1623 |
|
---|
1624 | static DECLCALLBACK(int) vdiWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite,
|
---|
1625 | PVDIOCTX pIoCtx, size_t *pcbWriteProcess, size_t *pcbPreRead,
|
---|
1626 | size_t *pcbPostRead, unsigned fWrite)
|
---|
1627 | {
|
---|
1628 | LogFlowFunc(("pBackendData=%#p uOffset=%llu pIoCtx=%#p cbToWrite=%zu pcbWriteProcess=%#p pcbPreRead=%#p pcbPostRead=%#p\n",
|
---|
1629 | pBackendData, uOffset, pIoCtx, cbToWrite, pcbWriteProcess, pcbPreRead, pcbPostRead));
|
---|
1630 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1631 | unsigned uBlock;
|
---|
1632 | unsigned offWrite;
|
---|
1633 | int rc = VINF_SUCCESS;
|
---|
1634 |
|
---|
1635 | AssertPtr(pImage);
|
---|
1636 | Assert(!(uOffset % 512));
|
---|
1637 | Assert(!(cbToWrite % 512));
|
---|
1638 | AssertReturn((VALID_PTR(pIoCtx) && cbToWrite), VERR_INVALID_PARAMETER);
|
---|
1639 |
|
---|
1640 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
1641 | {
|
---|
1642 | /* No size check here, will do that later. For dynamic images which are
|
---|
1643 | * not multiples of the block size in length, this would prevent writing to
|
---|
1644 | * the last block. */
|
---|
1645 |
|
---|
1646 | /* Calculate starting block number and offset inside it. */
|
---|
1647 | uBlock = (unsigned)(uOffset >> pImage->uShiftOffset2Index);
|
---|
1648 | offWrite = (unsigned)uOffset & pImage->uBlockMask;
|
---|
1649 |
|
---|
1650 | /* Clip write range to at most the rest of the block. */
|
---|
1651 | cbToWrite = RT_MIN(cbToWrite, getImageBlockSize(&pImage->Header) - offWrite);
|
---|
1652 | Assert(!(cbToWrite % 512));
|
---|
1653 |
|
---|
1654 | do
|
---|
1655 | {
|
---|
1656 | if (!IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[uBlock]))
|
---|
1657 | {
|
---|
1658 | /* Block is either free or zero. */
|
---|
1659 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_HONOR_ZEROES)
|
---|
1660 | && ( pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_ZERO
|
---|
1661 | || cbToWrite == getImageBlockSize(&pImage->Header)))
|
---|
1662 | {
|
---|
1663 | /* If the destination block is unallocated at this point, it's
|
---|
1664 | * either a zero block or a block which hasn't been used so far
|
---|
1665 | * (which also means that it's a zero block. Don't need to write
|
---|
1666 | * anything to this block if the data consists of just zeroes. */
|
---|
1667 | if (vdIfIoIntIoCtxIsZero(pImage->pIfIo, pIoCtx, cbToWrite, true))
|
---|
1668 | {
|
---|
1669 | pImage->paBlocks[uBlock] = VDI_IMAGE_BLOCK_ZERO;
|
---|
1670 | *pcbPreRead = 0;
|
---|
1671 | *pcbPostRead = 0;
|
---|
1672 | break;
|
---|
1673 | }
|
---|
1674 | }
|
---|
1675 |
|
---|
1676 | if ( cbToWrite == getImageBlockSize(&pImage->Header)
|
---|
1677 | && !(fWrite & VD_WRITE_NO_ALLOC))
|
---|
1678 | {
|
---|
1679 | /* Full block write to previously unallocated block.
|
---|
1680 | * Allocate block and write data. */
|
---|
1681 | Assert(!offWrite);
|
---|
1682 | PVDIASYNCBLOCKALLOC pBlockAlloc = (PVDIASYNCBLOCKALLOC)RTMemAllocZ(sizeof(VDIASYNCBLOCKALLOC));
|
---|
1683 | if (!pBlockAlloc)
|
---|
1684 | {
|
---|
1685 | rc = VERR_NO_MEMORY;
|
---|
1686 | break;
|
---|
1687 | }
|
---|
1688 |
|
---|
1689 | unsigned cBlocksAllocated = getImageBlocksAllocated(&pImage->Header);
|
---|
1690 | uint64_t u64Offset = (uint64_t)cBlocksAllocated * pImage->cbTotalBlockData
|
---|
1691 | + (pImage->offStartData + pImage->offStartBlockData);
|
---|
1692 |
|
---|
1693 | pBlockAlloc->cBlocksAllocated = cBlocksAllocated;
|
---|
1694 | pBlockAlloc->uBlock = uBlock;
|
---|
1695 |
|
---|
1696 | *pcbPreRead = 0;
|
---|
1697 | *pcbPostRead = 0;
|
---|
1698 |
|
---|
1699 | rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage,
|
---|
1700 | u64Offset, pIoCtx, cbToWrite,
|
---|
1701 | vdiBlockAllocUpdate, pBlockAlloc);
|
---|
1702 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
1703 | break;
|
---|
1704 | else if (RT_FAILURE(rc))
|
---|
1705 | {
|
---|
1706 | RTMemFree(pBlockAlloc);
|
---|
1707 | break;
|
---|
1708 | }
|
---|
1709 |
|
---|
1710 | rc = vdiBlockAllocUpdate(pImage, pIoCtx, pBlockAlloc, rc);
|
---|
1711 | }
|
---|
1712 | else
|
---|
1713 | {
|
---|
1714 | /* Trying to do a partial write to an unallocated block. Don't do
|
---|
1715 | * anything except letting the upper layer know what to do. */
|
---|
1716 | *pcbPreRead = offWrite % getImageBlockSize(&pImage->Header);
|
---|
1717 | *pcbPostRead = getImageBlockSize(&pImage->Header) - cbToWrite - *pcbPreRead;
|
---|
1718 | rc = VERR_VD_BLOCK_FREE;
|
---|
1719 | }
|
---|
1720 | }
|
---|
1721 | else
|
---|
1722 | {
|
---|
1723 | /* Block present in image file, write relevant data. */
|
---|
1724 | uint64_t u64Offset = (uint64_t)pImage->paBlocks[uBlock] * pImage->cbTotalBlockData
|
---|
1725 | + (pImage->offStartData + pImage->offStartBlockData + offWrite);
|
---|
1726 | rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage,
|
---|
1727 | u64Offset, pIoCtx, cbToWrite, NULL, NULL);
|
---|
1728 | }
|
---|
1729 | } while (0);
|
---|
1730 |
|
---|
1731 | if (pcbWriteProcess)
|
---|
1732 | *pcbWriteProcess = cbToWrite;
|
---|
1733 | }
|
---|
1734 | else
|
---|
1735 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
1736 |
|
---|
1737 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1738 | return rc;
|
---|
1739 | }
|
---|
1740 |
|
---|
1741 | static DECLCALLBACK(int) vdiFlush(void *pBackendData, PVDIOCTX pIoCtx)
|
---|
1742 | {
|
---|
1743 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1744 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1745 | int rc = VINF_SUCCESS;
|
---|
1746 |
|
---|
1747 | Assert(pImage);
|
---|
1748 |
|
---|
1749 | rc = vdiFlushImageIoCtx(pImage, pIoCtx);
|
---|
1750 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1751 | return rc;
|
---|
1752 | }
|
---|
1753 |
|
---|
1754 | /** @copydoc VDIMAGEBACKEND::pfnGetVersion */
|
---|
1755 | static DECLCALLBACK(unsigned) vdiGetVersion(void *pBackendData)
|
---|
1756 | {
|
---|
1757 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1758 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1759 |
|
---|
1760 | AssertPtrReturn(pImage, 0);
|
---|
1761 |
|
---|
1762 | LogFlowFunc(("returns %#x\n", pImage->PreHeader.u32Version));
|
---|
1763 | return pImage->PreHeader.u32Version;
|
---|
1764 | }
|
---|
1765 |
|
---|
1766 | /** @copydoc VDIMAGEBACKEND::pfnGetFileSize */
|
---|
1767 | static DECLCALLBACK(uint64_t) vdiGetFileSize(void *pBackendData)
|
---|
1768 | {
|
---|
1769 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1770 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1771 | uint64_t cb = 0;
|
---|
1772 |
|
---|
1773 | AssertPtrReturn(pImage, 0);
|
---|
1774 |
|
---|
1775 | if (pImage->pStorage)
|
---|
1776 | {
|
---|
1777 | uint64_t cbFile;
|
---|
1778 | int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
|
---|
1779 | if (RT_SUCCESS(rc))
|
---|
1780 | cb += cbFile;
|
---|
1781 | }
|
---|
1782 |
|
---|
1783 | LogFlowFunc(("returns %lld\n", cb));
|
---|
1784 | return cb;
|
---|
1785 | }
|
---|
1786 |
|
---|
1787 | /** @copydoc VDIMAGEBACKEND::pfnGetPCHSGeometry */
|
---|
1788 | static DECLCALLBACK(int) vdiGetPCHSGeometry(void *pBackendData, PVDGEOMETRY pPCHSGeometry)
|
---|
1789 | {
|
---|
1790 | LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry));
|
---|
1791 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1792 | int rc = VINF_SUCCESS;
|
---|
1793 |
|
---|
1794 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1795 |
|
---|
1796 | if (pImage->PCHSGeometry.cCylinders)
|
---|
1797 | *pPCHSGeometry = pImage->PCHSGeometry;
|
---|
1798 | else
|
---|
1799 | rc = VERR_VD_GEOMETRY_NOT_SET;
|
---|
1800 |
|
---|
1801 | LogFlowFunc(("returns %Rrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
|
---|
1802 | return rc;
|
---|
1803 | }
|
---|
1804 |
|
---|
1805 | /** @copydoc VDIMAGEBACKEND::pfnSetPCHSGeometry */
|
---|
1806 | static DECLCALLBACK(int) vdiSetPCHSGeometry(void *pBackendData, PCVDGEOMETRY pPCHSGeometry)
|
---|
1807 | {
|
---|
1808 | LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n",
|
---|
1809 | pBackendData, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
|
---|
1810 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1811 | int rc = VINF_SUCCESS;
|
---|
1812 |
|
---|
1813 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1814 |
|
---|
1815 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
1816 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
1817 | else
|
---|
1818 | pImage->PCHSGeometry = *pPCHSGeometry;
|
---|
1819 |
|
---|
1820 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1821 | return rc;
|
---|
1822 | }
|
---|
1823 |
|
---|
1824 | /** @copydoc VDIMAGEBACKEND::pfnGetLCHSGeometry */
|
---|
1825 | static DECLCALLBACK(int) vdiGetLCHSGeometry(void *pBackendData, PVDGEOMETRY pLCHSGeometry)
|
---|
1826 | {
|
---|
1827 | LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry));
|
---|
1828 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1829 |
|
---|
1830 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1831 |
|
---|
1832 | int rc = VINF_SUCCESS;
|
---|
1833 | VDIDISKGEOMETRY DummyGeo = { 0, 0, 0, VDI_GEOMETRY_SECTOR_SIZE };
|
---|
1834 | PVDIDISKGEOMETRY pGeometry = getImageLCHSGeometry(&pImage->Header);
|
---|
1835 | if (!pGeometry)
|
---|
1836 | pGeometry = &DummyGeo;
|
---|
1837 |
|
---|
1838 | if ( pGeometry->cCylinders > 0
|
---|
1839 | && pGeometry->cHeads > 0
|
---|
1840 | && pGeometry->cSectors > 0)
|
---|
1841 | {
|
---|
1842 | pLCHSGeometry->cCylinders = pGeometry->cCylinders;
|
---|
1843 | pLCHSGeometry->cHeads = pGeometry->cHeads;
|
---|
1844 | pLCHSGeometry->cSectors = pGeometry->cSectors;
|
---|
1845 | }
|
---|
1846 | else
|
---|
1847 | rc = VERR_VD_GEOMETRY_NOT_SET;
|
---|
1848 |
|
---|
1849 | LogFlowFunc(("returns %Rrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
|
---|
1850 | return rc;
|
---|
1851 | }
|
---|
1852 |
|
---|
1853 | /** @copydoc VDIMAGEBACKEND::pfnSetLCHSGeometry */
|
---|
1854 | static DECLCALLBACK(int) vdiSetLCHSGeometry(void *pBackendData, PCVDGEOMETRY pLCHSGeometry)
|
---|
1855 | {
|
---|
1856 | LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n",
|
---|
1857 | pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
|
---|
1858 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1859 | PVDIDISKGEOMETRY pGeometry;
|
---|
1860 | int rc = VINF_SUCCESS;
|
---|
1861 |
|
---|
1862 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1863 |
|
---|
1864 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
1865 | {
|
---|
1866 | pGeometry = getImageLCHSGeometry(&pImage->Header);
|
---|
1867 | if (pGeometry)
|
---|
1868 | {
|
---|
1869 | pGeometry->cCylinders = pLCHSGeometry->cCylinders;
|
---|
1870 | pGeometry->cHeads = pLCHSGeometry->cHeads;
|
---|
1871 | pGeometry->cSectors = pLCHSGeometry->cSectors;
|
---|
1872 | pGeometry->cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
1873 |
|
---|
1874 | /* Update header information in base image file. */
|
---|
1875 | vdiFlushImage(pImage);
|
---|
1876 | }
|
---|
1877 | }
|
---|
1878 | else
|
---|
1879 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
1880 |
|
---|
1881 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1882 | return rc;
|
---|
1883 | }
|
---|
1884 |
|
---|
1885 | /** @copydoc VDIMAGEBACKEND::pfnQueryRegions */
|
---|
1886 | static DECLCALLBACK(int) vdiQueryRegions(void *pBackendData, PCVDREGIONLIST *ppRegionList)
|
---|
1887 | {
|
---|
1888 | LogFlowFunc(("pBackendData=%#p ppRegionList=%#p\n", pBackendData, ppRegionList));
|
---|
1889 | PVDIIMAGEDESC pThis = (PVDIIMAGEDESC)pBackendData;
|
---|
1890 |
|
---|
1891 | AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
|
---|
1892 |
|
---|
1893 | *ppRegionList = &pThis->RegionList;
|
---|
1894 | LogFlowFunc(("returns %Rrc\n", VINF_SUCCESS));
|
---|
1895 | return VINF_SUCCESS;
|
---|
1896 | }
|
---|
1897 |
|
---|
1898 | /** @copydoc VDIMAGEBACKEND::pfnRegionListRelease */
|
---|
1899 | static DECLCALLBACK(void) vdiRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList)
|
---|
1900 | {
|
---|
1901 | RT_NOREF1(pRegionList);
|
---|
1902 | LogFlowFunc(("pBackendData=%#p pRegionList=%#p\n", pBackendData, pRegionList));
|
---|
1903 | PVDIIMAGEDESC pThis = (PVDIIMAGEDESC)pBackendData;
|
---|
1904 | AssertPtr(pThis); RT_NOREF(pThis);
|
---|
1905 |
|
---|
1906 | /* Nothing to do here. */
|
---|
1907 | }
|
---|
1908 |
|
---|
1909 | /** @copydoc VDIMAGEBACKEND::pfnGetImageFlags */
|
---|
1910 | static DECLCALLBACK(unsigned) vdiGetImageFlags(void *pBackendData)
|
---|
1911 | {
|
---|
1912 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1913 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1914 |
|
---|
1915 | AssertPtrReturn(pImage, 0);
|
---|
1916 |
|
---|
1917 | LogFlowFunc(("returns %#x\n", pImage->uImageFlags));
|
---|
1918 | return pImage->uImageFlags;
|
---|
1919 | }
|
---|
1920 |
|
---|
1921 | /** @copydoc VDIMAGEBACKEND::pfnGetOpenFlags */
|
---|
1922 | static DECLCALLBACK(unsigned) vdiGetOpenFlags(void *pBackendData)
|
---|
1923 | {
|
---|
1924 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1925 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1926 |
|
---|
1927 | AssertPtrReturn(pImage, 0);
|
---|
1928 |
|
---|
1929 | LogFlowFunc(("returns %#x\n", pImage->uOpenFlags));
|
---|
1930 | return pImage->uOpenFlags;
|
---|
1931 | }
|
---|
1932 |
|
---|
1933 | /** @copydoc VDIMAGEBACKEND::pfnSetOpenFlags */
|
---|
1934 | static DECLCALLBACK(int) vdiSetOpenFlags(void *pBackendData, unsigned uOpenFlags)
|
---|
1935 | {
|
---|
1936 | LogFlowFunc(("pBackendData=%#p uOpenFlags=%#x\n", pBackendData, uOpenFlags));
|
---|
1937 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1938 | int rc;
|
---|
1939 | const char *pszFilename;
|
---|
1940 |
|
---|
1941 | /* Image must be opened and the new flags must be valid. */
|
---|
1942 | if (!pImage || (uOpenFlags & ~( VD_OPEN_FLAGS_READONLY | VD_OPEN_FLAGS_INFO
|
---|
1943 | | VD_OPEN_FLAGS_ASYNC_IO | VD_OPEN_FLAGS_SHAREABLE
|
---|
1944 | | VD_OPEN_FLAGS_SEQUENTIAL | VD_OPEN_FLAGS_DISCARD
|
---|
1945 | | VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS)))
|
---|
1946 | rc = VERR_INVALID_PARAMETER;
|
---|
1947 | else
|
---|
1948 | {
|
---|
1949 | /* Implement this operation via reopening the image. */
|
---|
1950 | pszFilename = pImage->pszFilename;
|
---|
1951 | rc = vdiFreeImage(pImage, false);
|
---|
1952 | if (RT_SUCCESS(rc))
|
---|
1953 | rc = vdiOpenImage(pImage, uOpenFlags);
|
---|
1954 | }
|
---|
1955 |
|
---|
1956 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1957 | return rc;
|
---|
1958 | }
|
---|
1959 |
|
---|
1960 | /** @copydoc VDIMAGEBACKEND::pfnGetComment */
|
---|
1961 | static DECLCALLBACK(int) vdiGetComment(void *pBackendData, char *pszComment,
|
---|
1962 | size_t cbComment)
|
---|
1963 | {
|
---|
1964 | LogFlowFunc(("pBackendData=%#p pszComment=%#p cbComment=%zu\n", pBackendData, pszComment, cbComment));
|
---|
1965 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1966 |
|
---|
1967 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1968 |
|
---|
1969 | int rc = VINF_SUCCESS;
|
---|
1970 | char *pszTmp = getImageComment(&pImage->Header);
|
---|
1971 | /* Make this foolproof even if the image doesn't have the zero
|
---|
1972 | * termination. With some luck the repaired header will be saved. */
|
---|
1973 | size_t cb = RTStrNLen(pszTmp, VDI_IMAGE_COMMENT_SIZE);
|
---|
1974 | if (cb == VDI_IMAGE_COMMENT_SIZE)
|
---|
1975 | {
|
---|
1976 | pszTmp[VDI_IMAGE_COMMENT_SIZE-1] = '\0';
|
---|
1977 | cb--;
|
---|
1978 | }
|
---|
1979 | if (cb < cbComment)
|
---|
1980 | {
|
---|
1981 | /* memcpy is much better than strncpy. */
|
---|
1982 | memcpy(pszComment, pszTmp, cb + 1);
|
---|
1983 | }
|
---|
1984 | else
|
---|
1985 | rc = VERR_BUFFER_OVERFLOW;
|
---|
1986 |
|
---|
1987 | LogFlowFunc(("returns %Rrc comment=\"%s\"\n", rc, pszComment));
|
---|
1988 | return rc;
|
---|
1989 | }
|
---|
1990 |
|
---|
1991 | /** @copydoc VDIMAGEBACKEND::pfnSetComment */
|
---|
1992 | static DECLCALLBACK(int) vdiSetComment(void *pBackendData, const char *pszComment)
|
---|
1993 | {
|
---|
1994 | LogFlowFunc(("pBackendData=%#p pszComment=\"%s\"\n", pBackendData, pszComment));
|
---|
1995 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1996 | int rc;
|
---|
1997 |
|
---|
1998 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1999 |
|
---|
2000 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2001 | {
|
---|
2002 | size_t cchComment = pszComment ? strlen(pszComment) : 0;
|
---|
2003 | if (cchComment < VDI_IMAGE_COMMENT_SIZE)
|
---|
2004 | {
|
---|
2005 | /* we don't support old style images */
|
---|
2006 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2007 | {
|
---|
2008 | /*
|
---|
2009 | * Update the comment field, making sure to zero out all of the previous comment.
|
---|
2010 | */
|
---|
2011 | memset(pImage->Header.u.v1.szComment, '\0', VDI_IMAGE_COMMENT_SIZE);
|
---|
2012 | memcpy(pImage->Header.u.v1.szComment, pszComment, cchComment);
|
---|
2013 |
|
---|
2014 | /* write out new the header */
|
---|
2015 | rc = vdiUpdateHeader(pImage);
|
---|
2016 | }
|
---|
2017 | else
|
---|
2018 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2019 | }
|
---|
2020 | else
|
---|
2021 | {
|
---|
2022 | LogFunc(("pszComment is too long, %d bytes!\n", cchComment));
|
---|
2023 | rc = VERR_VD_VDI_COMMENT_TOO_LONG;
|
---|
2024 | }
|
---|
2025 | }
|
---|
2026 | else
|
---|
2027 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2028 |
|
---|
2029 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2030 | return rc;
|
---|
2031 | }
|
---|
2032 |
|
---|
2033 | /** @copydoc VDIMAGEBACKEND::pfnGetUuid */
|
---|
2034 | static DECLCALLBACK(int) vdiGetUuid(void *pBackendData, PRTUUID pUuid)
|
---|
2035 | {
|
---|
2036 | LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
|
---|
2037 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2038 |
|
---|
2039 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2040 |
|
---|
2041 | *pUuid = *getImageCreationUUID(&pImage->Header);
|
---|
2042 |
|
---|
2043 | LogFlowFunc(("returns %Rrc (%RTuuid)\n", VINF_SUCCESS, pUuid));
|
---|
2044 | return VINF_SUCCESS;
|
---|
2045 | }
|
---|
2046 |
|
---|
2047 | /** @copydoc VDIMAGEBACKEND::pfnSetUuid */
|
---|
2048 | static DECLCALLBACK(int) vdiSetUuid(void *pBackendData, PCRTUUID pUuid)
|
---|
2049 | {
|
---|
2050 | LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
|
---|
2051 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2052 |
|
---|
2053 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2054 |
|
---|
2055 | int rc = VINF_SUCCESS;
|
---|
2056 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2057 | {
|
---|
2058 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2059 | pImage->Header.u.v1.uuidCreate = *pUuid;
|
---|
2060 | /* Make it possible to clone old VDIs. */
|
---|
2061 | else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
|
---|
2062 | pImage->Header.u.v0.uuidCreate = *pUuid;
|
---|
2063 | else
|
---|
2064 | {
|
---|
2065 | LogFunc(("Version is not supported!\n"));
|
---|
2066 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2067 | }
|
---|
2068 | }
|
---|
2069 | else
|
---|
2070 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2071 |
|
---|
2072 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2073 | return rc;
|
---|
2074 | }
|
---|
2075 |
|
---|
2076 | /** @copydoc VDIMAGEBACKEND::pfnGetModificationUuid */
|
---|
2077 | static DECLCALLBACK(int) vdiGetModificationUuid(void *pBackendData, PRTUUID pUuid)
|
---|
2078 | {
|
---|
2079 | LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
|
---|
2080 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2081 |
|
---|
2082 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2083 |
|
---|
2084 | *pUuid = *getImageModificationUUID(&pImage->Header);
|
---|
2085 |
|
---|
2086 | LogFlowFunc(("returns %Rrc (%RTuuid)\n", VINF_SUCCESS, pUuid));
|
---|
2087 | return VINF_SUCCESS;
|
---|
2088 | }
|
---|
2089 |
|
---|
2090 | /** @copydoc VDIMAGEBACKEND::pfnSetModificationUuid */
|
---|
2091 | static DECLCALLBACK(int) vdiSetModificationUuid(void *pBackendData, PCRTUUID pUuid)
|
---|
2092 | {
|
---|
2093 | LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
|
---|
2094 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2095 |
|
---|
2096 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2097 |
|
---|
2098 | int rc = VINF_SUCCESS;
|
---|
2099 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2100 | {
|
---|
2101 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2102 | pImage->Header.u.v1.uuidModify = *pUuid;
|
---|
2103 | /* Make it possible to clone old VDIs. */
|
---|
2104 | else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
|
---|
2105 | pImage->Header.u.v0.uuidModify = *pUuid;
|
---|
2106 | else
|
---|
2107 | {
|
---|
2108 | LogFunc(("Version is not supported!\n"));
|
---|
2109 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2110 | }
|
---|
2111 | }
|
---|
2112 | else
|
---|
2113 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2114 |
|
---|
2115 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2116 | return rc;
|
---|
2117 | }
|
---|
2118 |
|
---|
2119 | /** @copydoc VDIMAGEBACKEND::pfnGetParentUuid */
|
---|
2120 | static DECLCALLBACK(int) vdiGetParentUuid(void *pBackendData, PRTUUID pUuid)
|
---|
2121 | {
|
---|
2122 | LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
|
---|
2123 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2124 |
|
---|
2125 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2126 |
|
---|
2127 | *pUuid = *getImageParentUUID(&pImage->Header);
|
---|
2128 |
|
---|
2129 | LogFlowFunc(("returns %Rrc (%RTuuid)\n", VINF_SUCCESS, pUuid));
|
---|
2130 | return VINF_SUCCESS;
|
---|
2131 | }
|
---|
2132 |
|
---|
2133 | /** @copydoc VDIMAGEBACKEND::pfnSetParentUuid */
|
---|
2134 | static DECLCALLBACK(int) vdiSetParentUuid(void *pBackendData, PCRTUUID pUuid)
|
---|
2135 | {
|
---|
2136 | LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
|
---|
2137 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2138 |
|
---|
2139 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2140 |
|
---|
2141 | int rc = VINF_SUCCESS;
|
---|
2142 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2143 | {
|
---|
2144 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2145 | pImage->Header.u.v1.uuidLinkage = *pUuid;
|
---|
2146 | /* Make it possible to clone old VDIs. */
|
---|
2147 | else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
|
---|
2148 | pImage->Header.u.v0.uuidLinkage = *pUuid;
|
---|
2149 | else
|
---|
2150 | {
|
---|
2151 | LogFunc(("Version is not supported!\n"));
|
---|
2152 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2153 | }
|
---|
2154 | }
|
---|
2155 | else
|
---|
2156 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2157 |
|
---|
2158 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2159 | return rc;
|
---|
2160 | }
|
---|
2161 |
|
---|
2162 | /** @copydoc VDIMAGEBACKEND::pfnGetParentModificationUuid */
|
---|
2163 | static DECLCALLBACK(int) vdiGetParentModificationUuid(void *pBackendData, PRTUUID pUuid)
|
---|
2164 | {
|
---|
2165 | LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
|
---|
2166 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2167 |
|
---|
2168 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2169 |
|
---|
2170 | *pUuid = *getImageParentModificationUUID(&pImage->Header);
|
---|
2171 |
|
---|
2172 | LogFlowFunc(("returns %Rrc (%RTuuid)\n", VINF_SUCCESS, pUuid));
|
---|
2173 | return VINF_SUCCESS;
|
---|
2174 | }
|
---|
2175 |
|
---|
2176 | /** @copydoc VDIMAGEBACKEND::pfnSetParentModificationUuid */
|
---|
2177 | static DECLCALLBACK(int) vdiSetParentModificationUuid(void *pBackendData, PCRTUUID pUuid)
|
---|
2178 | {
|
---|
2179 | LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
|
---|
2180 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2181 |
|
---|
2182 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2183 |
|
---|
2184 | int rc = VINF_SUCCESS;
|
---|
2185 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2186 | {
|
---|
2187 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2188 | pImage->Header.u.v1.uuidParentModify = *pUuid;
|
---|
2189 | else
|
---|
2190 | {
|
---|
2191 | LogFunc(("Version is not supported!\n"));
|
---|
2192 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2193 | }
|
---|
2194 | }
|
---|
2195 | else
|
---|
2196 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2197 |
|
---|
2198 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2199 | return rc;
|
---|
2200 | }
|
---|
2201 |
|
---|
2202 | /** @copydoc VDIMAGEBACKEND::pfnDump */
|
---|
2203 | static DECLCALLBACK(void) vdiDump(void *pBackendData)
|
---|
2204 | {
|
---|
2205 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2206 |
|
---|
2207 | AssertPtrReturnVoid(pImage);
|
---|
2208 | vdIfErrorMessage(pImage->pIfError, "Dumping VDI image \"%s\" mode=%s uOpenFlags=%X File=%#p\n",
|
---|
2209 | pImage->pszFilename,
|
---|
2210 | (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY) ? "r/o" : "r/w",
|
---|
2211 | pImage->uOpenFlags,
|
---|
2212 | pImage->pStorage);
|
---|
2213 | vdIfErrorMessage(pImage->pIfError, "Header: Version=%08X Type=%X Flags=%X Size=%llu\n",
|
---|
2214 | pImage->PreHeader.u32Version,
|
---|
2215 | getImageType(&pImage->Header),
|
---|
2216 | getImageFlags(&pImage->Header),
|
---|
2217 | getImageDiskSize(&pImage->Header));
|
---|
2218 | vdIfErrorMessage(pImage->pIfError, "Header: cbBlock=%u cbBlockExtra=%u cBlocks=%u cBlocksAllocated=%u\n",
|
---|
2219 | getImageBlockSize(&pImage->Header),
|
---|
2220 | getImageExtraBlockSize(&pImage->Header),
|
---|
2221 | getImageBlocks(&pImage->Header),
|
---|
2222 | getImageBlocksAllocated(&pImage->Header));
|
---|
2223 | vdIfErrorMessage(pImage->pIfError, "Header: offBlocks=%u offData=%u\n",
|
---|
2224 | getImageBlocksOffset(&pImage->Header),
|
---|
2225 | getImageDataOffset(&pImage->Header));
|
---|
2226 | PVDIDISKGEOMETRY pg = getImageLCHSGeometry(&pImage->Header);
|
---|
2227 | if (pg)
|
---|
2228 | vdIfErrorMessage(pImage->pIfError, "Header: Geometry: C/H/S=%u/%u/%u cbSector=%u\n",
|
---|
2229 | pg->cCylinders, pg->cHeads, pg->cSectors, pg->cbSector);
|
---|
2230 | vdIfErrorMessage(pImage->pIfError, "Header: uuidCreation={%RTuuid}\n", getImageCreationUUID(&pImage->Header));
|
---|
2231 | vdIfErrorMessage(pImage->pIfError, "Header: uuidModification={%RTuuid}\n", getImageModificationUUID(&pImage->Header));
|
---|
2232 | vdIfErrorMessage(pImage->pIfError, "Header: uuidParent={%RTuuid}\n", getImageParentUUID(&pImage->Header));
|
---|
2233 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) >= 1)
|
---|
2234 | vdIfErrorMessage(pImage->pIfError, "Header: uuidParentModification={%RTuuid}\n", getImageParentModificationUUID(&pImage->Header));
|
---|
2235 | vdIfErrorMessage(pImage->pIfError, "Image: fFlags=%08X offStartBlocks=%u offStartData=%u\n",
|
---|
2236 | pImage->uImageFlags, pImage->offStartBlocks, pImage->offStartData);
|
---|
2237 | vdIfErrorMessage(pImage->pIfError, "Image: uBlockMask=%08X cbTotalBlockData=%u uShiftOffset2Index=%u offStartBlockData=%u\n",
|
---|
2238 | pImage->uBlockMask,
|
---|
2239 | pImage->cbTotalBlockData,
|
---|
2240 | pImage->uShiftOffset2Index,
|
---|
2241 | pImage->offStartBlockData);
|
---|
2242 |
|
---|
2243 | unsigned uBlock, cBlocksNotFree, cBadBlocks, cBlocks = getImageBlocks(&pImage->Header);
|
---|
2244 | for (uBlock=0, cBlocksNotFree=0, cBadBlocks=0; uBlock<cBlocks; uBlock++)
|
---|
2245 | {
|
---|
2246 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[uBlock]))
|
---|
2247 | {
|
---|
2248 | cBlocksNotFree++;
|
---|
2249 | if (pImage->paBlocks[uBlock] >= cBlocks)
|
---|
2250 | cBadBlocks++;
|
---|
2251 | }
|
---|
2252 | }
|
---|
2253 | if (cBlocksNotFree != getImageBlocksAllocated(&pImage->Header))
|
---|
2254 | {
|
---|
2255 | vdIfErrorMessage(pImage->pIfError, "!! WARNING: %u blocks actually allocated (cBlocksAllocated=%u) !!\n",
|
---|
2256 | cBlocksNotFree, getImageBlocksAllocated(&pImage->Header));
|
---|
2257 | }
|
---|
2258 | if (cBadBlocks)
|
---|
2259 | {
|
---|
2260 | vdIfErrorMessage(pImage->pIfError, "!! WARNING: %u bad blocks found !!\n",
|
---|
2261 | cBadBlocks);
|
---|
2262 | }
|
---|
2263 | }
|
---|
2264 |
|
---|
2265 | /** @copydoc VDIMAGEBACKEND::pfnCompact */
|
---|
2266 | static DECLCALLBACK(int) vdiCompact(void *pBackendData, unsigned uPercentStart,
|
---|
2267 | unsigned uPercentSpan, PVDINTERFACE pVDIfsDisk,
|
---|
2268 | PVDINTERFACE pVDIfsImage, PVDINTERFACE pVDIfsOperation)
|
---|
2269 | {
|
---|
2270 | RT_NOREF2(pVDIfsDisk, pVDIfsImage);
|
---|
2271 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2272 | int rc = VINF_SUCCESS;
|
---|
2273 | void *pvBuf = NULL, *pvTmp = NULL;
|
---|
2274 | unsigned *paBlocks2 = NULL;
|
---|
2275 |
|
---|
2276 | DECLCALLBACKMEMBER(int, pfnParentRead)(void *, uint64_t, void *, size_t) = NULL;
|
---|
2277 | void *pvParent = NULL;
|
---|
2278 | PVDINTERFACEPARENTSTATE pIfParentState = VDIfParentStateGet(pVDIfsOperation);
|
---|
2279 | if (pIfParentState)
|
---|
2280 | {
|
---|
2281 | pfnParentRead = pIfParentState->pfnParentRead;
|
---|
2282 | pvParent = pIfParentState->Core.pvUser;
|
---|
2283 | }
|
---|
2284 |
|
---|
2285 | PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation);
|
---|
2286 | PVDINTERFACEQUERYRANGEUSE pIfQueryRangeUse = VDIfQueryRangeUseGet(pVDIfsOperation);
|
---|
2287 |
|
---|
2288 | do
|
---|
2289 | {
|
---|
2290 | AssertBreakStmt(pImage, rc = VERR_INVALID_PARAMETER);
|
---|
2291 |
|
---|
2292 | AssertBreakStmt(!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY),
|
---|
2293 | rc = VERR_VD_IMAGE_READ_ONLY);
|
---|
2294 |
|
---|
2295 | unsigned cBlocks;
|
---|
2296 | unsigned cBlocksToMove = 0;
|
---|
2297 | size_t cbBlock;
|
---|
2298 | cBlocks = getImageBlocks(&pImage->Header);
|
---|
2299 | cbBlock = getImageBlockSize(&pImage->Header);
|
---|
2300 | if (pfnParentRead)
|
---|
2301 | {
|
---|
2302 | pvBuf = RTMemTmpAlloc(cbBlock);
|
---|
2303 | AssertBreakStmt(pvBuf, rc = VERR_NO_MEMORY);
|
---|
2304 | }
|
---|
2305 | pvTmp = RTMemTmpAlloc(cbBlock);
|
---|
2306 | AssertBreakStmt(pvTmp, rc = VERR_NO_MEMORY);
|
---|
2307 |
|
---|
2308 | uint64_t cbFile;
|
---|
2309 | rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
|
---|
2310 | AssertRCBreak(rc);
|
---|
2311 | unsigned cBlocksAllocated = (unsigned)((cbFile - pImage->offStartData - pImage->offStartBlockData) >> pImage->uShiftOffset2Index);
|
---|
2312 | if (cBlocksAllocated == 0)
|
---|
2313 | {
|
---|
2314 | /* No data blocks in this image, no need to compact. */
|
---|
2315 | rc = VINF_SUCCESS;
|
---|
2316 | break;
|
---|
2317 | }
|
---|
2318 |
|
---|
2319 | /* Allocate block array for back resolving. */
|
---|
2320 | paBlocks2 = (unsigned *)RTMemAlloc(sizeof(unsigned *) * cBlocksAllocated);
|
---|
2321 | AssertBreakStmt(paBlocks2, rc = VERR_NO_MEMORY);
|
---|
2322 | /* Fill out back resolving, check/fix allocation errors before
|
---|
2323 | * compacting the image, just to be on the safe side. Update the
|
---|
2324 | * image contents straight away, as this enables cancelling. */
|
---|
2325 | for (unsigned i = 0; i < cBlocksAllocated; i++)
|
---|
2326 | paBlocks2[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
2327 | rc = VINF_SUCCESS;
|
---|
2328 | for (unsigned i = 0; i < cBlocks; i++)
|
---|
2329 | {
|
---|
2330 | VDIIMAGEBLOCKPOINTER ptrBlock = pImage->paBlocks[i];
|
---|
2331 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(ptrBlock))
|
---|
2332 | {
|
---|
2333 | if (ptrBlock < cBlocksAllocated)
|
---|
2334 | {
|
---|
2335 | if (paBlocks2[ptrBlock] == VDI_IMAGE_BLOCK_FREE)
|
---|
2336 | paBlocks2[ptrBlock] = i;
|
---|
2337 | else
|
---|
2338 | {
|
---|
2339 | LogFunc(("Freed cross-linked block %u in file \"%s\"\n",
|
---|
2340 | i, pImage->pszFilename));
|
---|
2341 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
2342 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2343 | if (RT_FAILURE(rc))
|
---|
2344 | break;
|
---|
2345 | }
|
---|
2346 | }
|
---|
2347 | else
|
---|
2348 | {
|
---|
2349 | LogFunc(("Freed out of bounds reference for block %u in file \"%s\"\n",
|
---|
2350 | i, pImage->pszFilename));
|
---|
2351 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
2352 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2353 | if (RT_FAILURE(rc))
|
---|
2354 | break;
|
---|
2355 | }
|
---|
2356 | }
|
---|
2357 | }
|
---|
2358 | if (RT_FAILURE(rc))
|
---|
2359 | break;
|
---|
2360 |
|
---|
2361 | /* Find redundant information and update the block pointers
|
---|
2362 | * accordingly, creating bubbles. Keep disk up to date, as this
|
---|
2363 | * enables cancelling. */
|
---|
2364 | for (unsigned i = 0; i < cBlocks; i++)
|
---|
2365 | {
|
---|
2366 | VDIIMAGEBLOCKPOINTER ptrBlock = pImage->paBlocks[i];
|
---|
2367 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(ptrBlock))
|
---|
2368 | {
|
---|
2369 | /* Block present in image file, read relevant data. */
|
---|
2370 | uint64_t u64Offset = (uint64_t)ptrBlock * pImage->cbTotalBlockData
|
---|
2371 | + (pImage->offStartData + pImage->offStartBlockData);
|
---|
2372 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, u64Offset, pvTmp, cbBlock);
|
---|
2373 | if (RT_FAILURE(rc))
|
---|
2374 | break;
|
---|
2375 |
|
---|
2376 | if (ASMBitFirstSet((volatile void *)pvTmp, (uint32_t)cbBlock * 8) == -1)
|
---|
2377 | {
|
---|
2378 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_ZERO;
|
---|
2379 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2380 | if (RT_FAILURE(rc))
|
---|
2381 | break;
|
---|
2382 | paBlocks2[ptrBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
2383 | /* Adjust progress info, one block to be relocated. */
|
---|
2384 | cBlocksToMove++;
|
---|
2385 | }
|
---|
2386 | else if (pfnParentRead)
|
---|
2387 | {
|
---|
2388 | rc = pfnParentRead(pvParent, (uint64_t)i * cbBlock, pvBuf, cbBlock);
|
---|
2389 | if (RT_FAILURE(rc))
|
---|
2390 | break;
|
---|
2391 | if (!memcmp(pvTmp, pvBuf, cbBlock))
|
---|
2392 | {
|
---|
2393 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
2394 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2395 | if (RT_FAILURE(rc))
|
---|
2396 | break;
|
---|
2397 | paBlocks2[ptrBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
2398 | /* Adjust progress info, one block to be relocated. */
|
---|
2399 | cBlocksToMove++;
|
---|
2400 | }
|
---|
2401 | }
|
---|
2402 | }
|
---|
2403 |
|
---|
2404 | /* Check if the range is in use if the block is still allocated. */
|
---|
2405 | ptrBlock = pImage->paBlocks[i];
|
---|
2406 | if ( IS_VDI_IMAGE_BLOCK_ALLOCATED(ptrBlock)
|
---|
2407 | && pIfQueryRangeUse)
|
---|
2408 | {
|
---|
2409 | bool fUsed = true;
|
---|
2410 |
|
---|
2411 | rc = vdIfQueryRangeUse(pIfQueryRangeUse, (uint64_t)i * cbBlock, cbBlock, &fUsed);
|
---|
2412 | if (RT_FAILURE(rc))
|
---|
2413 | break;
|
---|
2414 | if (!fUsed)
|
---|
2415 | {
|
---|
2416 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_ZERO;
|
---|
2417 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2418 | if (RT_FAILURE(rc))
|
---|
2419 | break;
|
---|
2420 | paBlocks2[ptrBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
2421 | /* Adjust progress info, one block to be relocated. */
|
---|
2422 | cBlocksToMove++;
|
---|
2423 | }
|
---|
2424 | }
|
---|
2425 |
|
---|
2426 | vdIfProgress(pIfProgress, (uint64_t)i * uPercentSpan / (cBlocks + cBlocksToMove) + uPercentStart);
|
---|
2427 | if (RT_FAILURE(rc))
|
---|
2428 | break;
|
---|
2429 | }
|
---|
2430 | if (RT_FAILURE(rc))
|
---|
2431 | break;
|
---|
2432 |
|
---|
2433 | /* Fill bubbles with other data (if available). */
|
---|
2434 | unsigned cBlocksMoved = 0;
|
---|
2435 | unsigned uBlockUsedPos = cBlocksAllocated;
|
---|
2436 | for (unsigned i = 0; i < cBlocksAllocated; i++)
|
---|
2437 | {
|
---|
2438 | unsigned uBlock = paBlocks2[i];
|
---|
2439 | if (uBlock == VDI_IMAGE_BLOCK_FREE)
|
---|
2440 | {
|
---|
2441 | unsigned uBlockData = VDI_IMAGE_BLOCK_FREE;
|
---|
2442 | while (uBlockUsedPos > i && uBlockData == VDI_IMAGE_BLOCK_FREE)
|
---|
2443 | {
|
---|
2444 | uBlockUsedPos--;
|
---|
2445 | uBlockData = paBlocks2[uBlockUsedPos];
|
---|
2446 | }
|
---|
2447 | /* Terminate early if there is no block which needs copying. */
|
---|
2448 | if (uBlockUsedPos == i)
|
---|
2449 | break;
|
---|
2450 | uint64_t u64Offset = (uint64_t)uBlockUsedPos * pImage->cbTotalBlockData
|
---|
2451 | + (pImage->offStartData + pImage->offStartBlockData);
|
---|
2452 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
2453 | pvTmp, cbBlock);
|
---|
2454 | u64Offset = (uint64_t)i * pImage->cbTotalBlockData
|
---|
2455 | + (pImage->offStartData + pImage->offStartBlockData);
|
---|
2456 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
2457 | pvTmp, cbBlock);
|
---|
2458 | pImage->paBlocks[uBlockData] = i;
|
---|
2459 | setImageBlocksAllocated(&pImage->Header, cBlocksAllocated - cBlocksMoved);
|
---|
2460 | rc = vdiUpdateBlockInfo(pImage, uBlockData);
|
---|
2461 | if (RT_FAILURE(rc))
|
---|
2462 | break;
|
---|
2463 | paBlocks2[i] = uBlockData;
|
---|
2464 | paBlocks2[uBlockUsedPos] = VDI_IMAGE_BLOCK_FREE;
|
---|
2465 | cBlocksMoved++;
|
---|
2466 | }
|
---|
2467 |
|
---|
2468 | rc = vdIfProgress(pIfProgress, (uint64_t)(cBlocks + cBlocksMoved) * uPercentSpan / (cBlocks + cBlocksToMove) + uPercentStart);
|
---|
2469 | if (RT_FAILURE(rc))
|
---|
2470 | break;
|
---|
2471 | }
|
---|
2472 | if (RT_FAILURE(rc))
|
---|
2473 | break;
|
---|
2474 |
|
---|
2475 | /* Update image header. */
|
---|
2476 | setImageBlocksAllocated(&pImage->Header, uBlockUsedPos);
|
---|
2477 | vdiUpdateHeader(pImage);
|
---|
2478 |
|
---|
2479 | /* Truncate the image to the proper size to finish compacting. */
|
---|
2480 | rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage,
|
---|
2481 | (uint64_t)uBlockUsedPos * pImage->cbTotalBlockData
|
---|
2482 | + pImage->offStartData + pImage->offStartBlockData);
|
---|
2483 | } while (0);
|
---|
2484 |
|
---|
2485 | if (paBlocks2)
|
---|
2486 | RTMemTmpFree(paBlocks2);
|
---|
2487 | if (pvTmp)
|
---|
2488 | RTMemTmpFree(pvTmp);
|
---|
2489 | if (pvBuf)
|
---|
2490 | RTMemTmpFree(pvBuf);
|
---|
2491 |
|
---|
2492 | if (RT_SUCCESS(rc))
|
---|
2493 | vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);
|
---|
2494 |
|
---|
2495 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2496 | return rc;
|
---|
2497 | }
|
---|
2498 |
|
---|
2499 |
|
---|
2500 | /** @copydoc VDIMAGEBACKEND::pfnResize */
|
---|
2501 | static DECLCALLBACK(int) vdiResize(void *pBackendData, uint64_t cbSize,
|
---|
2502 | PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
|
---|
2503 | unsigned uPercentStart, unsigned uPercentSpan,
|
---|
2504 | PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
|
---|
2505 | PVDINTERFACE pVDIfsOperation)
|
---|
2506 | {
|
---|
2507 | RT_NOREF5(uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation);
|
---|
2508 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2509 | int rc = VINF_SUCCESS;
|
---|
2510 |
|
---|
2511 | /* Check size. Maximum 4PB-3M. No tricks with adjusting the 1M block size
|
---|
2512 | * so far, which would extend the size. */
|
---|
2513 | if ( !cbSize
|
---|
2514 | || cbSize >= _1P * 4 - _1M * 3
|
---|
2515 | || cbSize < VDI_IMAGE_DEFAULT_BLOCK_SIZE)
|
---|
2516 | return VERR_VD_INVALID_SIZE;
|
---|
2517 |
|
---|
2518 | /*
|
---|
2519 | * Making the image smaller is not supported at the moment.
|
---|
2520 | * Resizing is also not supported for fixed size images and
|
---|
2521 | * very old images.
|
---|
2522 | */
|
---|
2523 | /** @todo implement making the image smaller, it is the responsibility of
|
---|
2524 | * the user to know what he's doing. */
|
---|
2525 | if ( cbSize < getImageDiskSize(&pImage->Header)
|
---|
2526 | || GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0
|
---|
2527 | || pImage->uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
2528 | rc = VERR_NOT_SUPPORTED;
|
---|
2529 | else if (cbSize > getImageDiskSize(&pImage->Header))
|
---|
2530 | {
|
---|
2531 | unsigned cBlocksAllocated = getImageBlocksAllocated(&pImage->Header); /** < Blocks currently allocated, doesn't change during resize */
|
---|
2532 | uint32_t cBlocksNew = cbSize / getImageBlockSize(&pImage->Header); /** < New number of blocks in the image after the resize */
|
---|
2533 | if (cbSize % getImageBlockSize(&pImage->Header))
|
---|
2534 | cBlocksNew++;
|
---|
2535 |
|
---|
2536 | uint32_t cBlocksOld = getImageBlocks(&pImage->Header); /** < Number of blocks before the resize. */
|
---|
2537 | uint64_t cbBlockspaceNew = cBlocksNew * sizeof(VDIIMAGEBLOCKPOINTER); /** < Required space for the block array after the resize. */
|
---|
2538 | uint64_t offStartDataNew = RT_ALIGN_32(pImage->offStartBlocks + cbBlockspaceNew, VDI_DATA_ALIGN); /** < New start offset for block data after the resize */
|
---|
2539 |
|
---|
2540 | if (pImage->offStartData < offStartDataNew)
|
---|
2541 | {
|
---|
2542 | if (cBlocksAllocated > 0)
|
---|
2543 | {
|
---|
2544 | /* Calculate how many sectors need to be relocated. */
|
---|
2545 | uint64_t cbOverlapping = offStartDataNew - pImage->offStartData;
|
---|
2546 | unsigned cBlocksReloc = cbOverlapping / getImageBlockSize(&pImage->Header);
|
---|
2547 | if (cbOverlapping % getImageBlockSize(&pImage->Header))
|
---|
2548 | cBlocksReloc++;
|
---|
2549 |
|
---|
2550 | /* Since only full blocks can be relocated the new data start is
|
---|
2551 | * determined by moving it block by block. */
|
---|
2552 | cBlocksReloc = RT_MIN(cBlocksReloc, cBlocksAllocated);
|
---|
2553 | offStartDataNew = pImage->offStartData;
|
---|
2554 |
|
---|
2555 | /* Do the relocation. */
|
---|
2556 | LogFlow(("Relocating %u blocks\n", cBlocksReloc));
|
---|
2557 |
|
---|
2558 | /*
|
---|
2559 | * Get the blocks we need to relocate first, they are appended to the end
|
---|
2560 | * of the image.
|
---|
2561 | */
|
---|
2562 | void *pvBuf = NULL, *pvZero = NULL;
|
---|
2563 | do
|
---|
2564 | {
|
---|
2565 | /* Allocate data buffer. */
|
---|
2566 | pvBuf = RTMemAllocZ(pImage->cbTotalBlockData);
|
---|
2567 | if (!pvBuf)
|
---|
2568 | {
|
---|
2569 | rc = VERR_NO_MEMORY;
|
---|
2570 | break;
|
---|
2571 | }
|
---|
2572 |
|
---|
2573 | /* Allocate buffer for overwriting with zeroes. */
|
---|
2574 | pvZero = RTMemAllocZ(pImage->cbTotalBlockData);
|
---|
2575 | if (!pvZero)
|
---|
2576 | {
|
---|
2577 | rc = VERR_NO_MEMORY;
|
---|
2578 | break;
|
---|
2579 | }
|
---|
2580 |
|
---|
2581 | for (unsigned i = 0; i < cBlocksReloc; i++)
|
---|
2582 | {
|
---|
2583 | /* Search the index in the block table. */
|
---|
2584 | for (unsigned idxBlock = 0; idxBlock < cBlocksOld; idxBlock++)
|
---|
2585 | {
|
---|
2586 | if (!pImage->paBlocks[idxBlock])
|
---|
2587 | {
|
---|
2588 | /* Read data and append to the end of the image. */
|
---|
2589 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage,
|
---|
2590 | offStartDataNew, pvBuf,
|
---|
2591 | pImage->cbTotalBlockData);
|
---|
2592 | if (RT_FAILURE(rc))
|
---|
2593 | break;
|
---|
2594 |
|
---|
2595 | uint64_t offBlockAppend;
|
---|
2596 | rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &offBlockAppend);
|
---|
2597 | if (RT_FAILURE(rc))
|
---|
2598 | break;
|
---|
2599 |
|
---|
2600 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
|
---|
2601 | offBlockAppend, pvBuf,
|
---|
2602 | pImage->cbTotalBlockData);
|
---|
2603 | if (RT_FAILURE(rc))
|
---|
2604 | break;
|
---|
2605 |
|
---|
2606 | /* Zero out the old block area. */
|
---|
2607 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
|
---|
2608 | offStartDataNew, pvZero,
|
---|
2609 | pImage->cbTotalBlockData);
|
---|
2610 | if (RT_FAILURE(rc))
|
---|
2611 | break;
|
---|
2612 |
|
---|
2613 | /* Update block counter. */
|
---|
2614 | pImage->paBlocks[idxBlock] = cBlocksAllocated - 1;
|
---|
2615 |
|
---|
2616 | /*
|
---|
2617 | * Decrease the block number of all other entries in the array.
|
---|
2618 | * They were moved one block to the front.
|
---|
2619 | * Doing it as a separate step iterating over the array again
|
---|
2620 | * because an error while relocating the block might end up
|
---|
2621 | * in a corrupted image otherwise.
|
---|
2622 | */
|
---|
2623 | for (unsigned idxBlock2 = 0; idxBlock2 < cBlocksOld; idxBlock2++)
|
---|
2624 | {
|
---|
2625 | if ( idxBlock2 != idxBlock
|
---|
2626 | && IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[idxBlock2]))
|
---|
2627 | pImage->paBlocks[idxBlock2]--;
|
---|
2628 | }
|
---|
2629 |
|
---|
2630 | /* Continue with the next block. */
|
---|
2631 | break;
|
---|
2632 | }
|
---|
2633 | }
|
---|
2634 |
|
---|
2635 | if (RT_FAILURE(rc))
|
---|
2636 | break;
|
---|
2637 |
|
---|
2638 | offStartDataNew += pImage->cbTotalBlockData;
|
---|
2639 | }
|
---|
2640 | } while (0);
|
---|
2641 |
|
---|
2642 | if (pvBuf)
|
---|
2643 | RTMemFree(pvBuf);
|
---|
2644 | if (pvZero)
|
---|
2645 | RTMemFree(pvZero);
|
---|
2646 | }
|
---|
2647 |
|
---|
2648 | /*
|
---|
2649 | * We need to update the new offsets for the image data in the out of memory
|
---|
2650 | * case too because we relocated the blocks already.
|
---|
2651 | */
|
---|
2652 | pImage->offStartData = offStartDataNew;
|
---|
2653 | setImageDataOffset(&pImage->Header, offStartDataNew);
|
---|
2654 | }
|
---|
2655 |
|
---|
2656 | /*
|
---|
2657 | * Relocation done, expand the block array and update the header with
|
---|
2658 | * the new data.
|
---|
2659 | */
|
---|
2660 | if (RT_SUCCESS(rc))
|
---|
2661 | {
|
---|
2662 | PVDIIMAGEBLOCKPOINTER paBlocksNew = (PVDIIMAGEBLOCKPOINTER)RTMemRealloc(pImage->paBlocks, cbBlockspaceNew);
|
---|
2663 | if (paBlocksNew)
|
---|
2664 | {
|
---|
2665 | pImage->paBlocks = paBlocksNew;
|
---|
2666 |
|
---|
2667 | /* Mark the new blocks as unallocated. */
|
---|
2668 | for (unsigned idxBlock = cBlocksOld; idxBlock < cBlocksNew; idxBlock++)
|
---|
2669 | pImage->paBlocks[idxBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
2670 | }
|
---|
2671 | else
|
---|
2672 | rc = VERR_NO_MEMORY;
|
---|
2673 |
|
---|
2674 | /* Write the block array before updating the rest. */
|
---|
2675 | vdiConvBlocksEndianess(VDIECONV_H2F, pImage->paBlocks, cBlocksNew);
|
---|
2676 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, pImage->offStartBlocks,
|
---|
2677 | pImage->paBlocks, cbBlockspaceNew);
|
---|
2678 | vdiConvBlocksEndianess(VDIECONV_F2H, pImage->paBlocks, cBlocksNew);
|
---|
2679 |
|
---|
2680 | if (RT_SUCCESS(rc))
|
---|
2681 | {
|
---|
2682 | /* Update size and new block count. */
|
---|
2683 | setImageDiskSize(&pImage->Header, cbSize);
|
---|
2684 | setImageBlocks(&pImage->Header, cBlocksNew);
|
---|
2685 | /* Update geometry. */
|
---|
2686 | pImage->PCHSGeometry = *pPCHSGeometry;
|
---|
2687 | pImage->cbImage = cbSize;
|
---|
2688 |
|
---|
2689 | PVDIDISKGEOMETRY pGeometry = getImageLCHSGeometry(&pImage->Header);
|
---|
2690 | if (pGeometry)
|
---|
2691 | {
|
---|
2692 | pGeometry->cCylinders = pLCHSGeometry->cCylinders;
|
---|
2693 | pGeometry->cHeads = pLCHSGeometry->cHeads;
|
---|
2694 | pGeometry->cSectors = pLCHSGeometry->cSectors;
|
---|
2695 | pGeometry->cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
2696 | }
|
---|
2697 | }
|
---|
2698 | }
|
---|
2699 |
|
---|
2700 | /* Update header information in base image file. */
|
---|
2701 | vdiFlushImage(pImage);
|
---|
2702 | }
|
---|
2703 | /* Same size doesn't change the image at all. */
|
---|
2704 |
|
---|
2705 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2706 | return rc;
|
---|
2707 | }
|
---|
2708 |
|
---|
2709 | /** @copydoc VDIMAGEBACKEND::pfnDiscard */
|
---|
2710 | static DECLCALLBACK(int) vdiDiscard(void *pBackendData, PVDIOCTX pIoCtx,
|
---|
2711 | uint64_t uOffset, size_t cbDiscard,
|
---|
2712 | size_t *pcbPreAllocated, size_t *pcbPostAllocated,
|
---|
2713 | size_t *pcbActuallyDiscarded, void **ppbmAllocationBitmap,
|
---|
2714 | unsigned fDiscard)
|
---|
2715 | {
|
---|
2716 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2717 | unsigned uBlock;
|
---|
2718 | unsigned offDiscard;
|
---|
2719 | int rc = VINF_SUCCESS;
|
---|
2720 | void *pvBlock = NULL;
|
---|
2721 |
|
---|
2722 | LogFlowFunc(("pBackendData=%#p pIoCtx=%#p uOffset=%llu cbDiscard=%zu pcbPreAllocated=%#p pcbPostAllocated=%#p pcbActuallyDiscarded=%#p ppbmAllocationBitmap=%#p fDiscard=%#x\n",
|
---|
2723 | pBackendData, pIoCtx, uOffset, cbDiscard, pcbPreAllocated, pcbPostAllocated, pcbActuallyDiscarded, ppbmAllocationBitmap, fDiscard));
|
---|
2724 |
|
---|
2725 | AssertPtr(pImage);
|
---|
2726 | Assert(!(uOffset % 512));
|
---|
2727 | Assert(!(cbDiscard % 512));
|
---|
2728 |
|
---|
2729 | AssertMsgReturn(!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY),
|
---|
2730 | ("Image is readonly\n"), VERR_VD_IMAGE_READ_ONLY);
|
---|
2731 | AssertMsgReturn( uOffset + cbDiscard <= getImageDiskSize(&pImage->Header)
|
---|
2732 | && cbDiscard,
|
---|
2733 | ("Invalid parameters uOffset=%llu cbDiscard=%zu\n",
|
---|
2734 | uOffset, cbDiscard),
|
---|
2735 | VERR_INVALID_PARAMETER);
|
---|
2736 |
|
---|
2737 | do
|
---|
2738 | {
|
---|
2739 | AssertMsgBreakStmt(!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY),
|
---|
2740 | ("Image is opened readonly\n"),
|
---|
2741 | rc = VERR_VD_IMAGE_READ_ONLY);
|
---|
2742 |
|
---|
2743 | AssertMsgBreakStmt(cbDiscard,
|
---|
2744 | ("cbDiscard=%u\n", cbDiscard),
|
---|
2745 | rc = VERR_INVALID_PARAMETER);
|
---|
2746 |
|
---|
2747 | /* Calculate starting block number and offset inside it. */
|
---|
2748 | uBlock = (unsigned)(uOffset >> pImage->uShiftOffset2Index);
|
---|
2749 | offDiscard = (unsigned)uOffset & pImage->uBlockMask;
|
---|
2750 |
|
---|
2751 | /* Clip range to at most the rest of the block. */
|
---|
2752 | cbDiscard = RT_MIN(cbDiscard, getImageBlockSize(&pImage->Header) - offDiscard);
|
---|
2753 | Assert(!(cbDiscard % 512));
|
---|
2754 |
|
---|
2755 | if (pcbPreAllocated)
|
---|
2756 | *pcbPreAllocated = 0;
|
---|
2757 |
|
---|
2758 | if (pcbPostAllocated)
|
---|
2759 | *pcbPostAllocated = 0;
|
---|
2760 |
|
---|
2761 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[uBlock]))
|
---|
2762 | {
|
---|
2763 | uint8_t *pbBlockData;
|
---|
2764 | size_t cbPreAllocated, cbPostAllocated;
|
---|
2765 |
|
---|
2766 | cbPreAllocated = offDiscard % getImageBlockSize(&pImage->Header);
|
---|
2767 | cbPostAllocated = getImageBlockSize(&pImage->Header) - cbDiscard - cbPreAllocated;
|
---|
2768 |
|
---|
2769 | /* Read the block data. */
|
---|
2770 | pvBlock = RTMemAlloc(pImage->cbTotalBlockData);
|
---|
2771 | if (!pvBlock)
|
---|
2772 | {
|
---|
2773 | rc = VERR_NO_MEMORY;
|
---|
2774 | break;
|
---|
2775 | }
|
---|
2776 |
|
---|
2777 | if (!cbPreAllocated && !cbPostAllocated)
|
---|
2778 | {
|
---|
2779 | /*
|
---|
2780 | * Discarding a whole block, don't check for allocated sectors.
|
---|
2781 | * It is possible to just remove the whole block which avoids
|
---|
2782 | * one read and checking the whole block for data.
|
---|
2783 | */
|
---|
2784 | rc = vdiDiscardBlockAsync(pImage, pIoCtx, uBlock, pvBlock);
|
---|
2785 | }
|
---|
2786 | else if (fDiscard & VD_DISCARD_MARK_UNUSED)
|
---|
2787 | {
|
---|
2788 | /* Just zero out the given range. */
|
---|
2789 | memset(pvBlock, 0, cbDiscard);
|
---|
2790 |
|
---|
2791 | uint64_t u64Offset = (uint64_t)pImage->paBlocks[uBlock] * pImage->cbTotalBlockData + pImage->offStartData + offDiscard;
|
---|
2792 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
2793 | u64Offset, pvBlock, cbDiscard, pIoCtx,
|
---|
2794 | NULL, NULL);
|
---|
2795 | RTMemFree(pvBlock);
|
---|
2796 | }
|
---|
2797 | else
|
---|
2798 | {
|
---|
2799 | /*
|
---|
2800 | * Read complete block as metadata, the I/O context has no memory buffer
|
---|
2801 | * and we need to access the content directly anyway.
|
---|
2802 | */
|
---|
2803 | PVDMETAXFER pMetaXfer;
|
---|
2804 | pbBlockData = (uint8_t *)pvBlock + pImage->offStartBlockData;
|
---|
2805 |
|
---|
2806 | uint64_t u64Offset = (uint64_t)pImage->paBlocks[uBlock] * pImage->cbTotalBlockData + pImage->offStartData;
|
---|
2807 | rc = vdIfIoIntFileReadMeta(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
2808 | pbBlockData, pImage->cbTotalBlockData,
|
---|
2809 | pIoCtx, &pMetaXfer, NULL, NULL);
|
---|
2810 | if (RT_FAILURE(rc))
|
---|
2811 | {
|
---|
2812 | RTMemFree(pvBlock);
|
---|
2813 | break;
|
---|
2814 | }
|
---|
2815 |
|
---|
2816 | vdIfIoIntMetaXferRelease(pImage->pIfIo, pMetaXfer);
|
---|
2817 |
|
---|
2818 | /* Clear data. */
|
---|
2819 | memset(pbBlockData + offDiscard , 0, cbDiscard);
|
---|
2820 |
|
---|
2821 | Assert(!(cbDiscard % 4));
|
---|
2822 | Assert(getImageBlockSize(&pImage->Header) * 8 <= UINT32_MAX);
|
---|
2823 | if (ASMBitFirstSet((volatile void *)pbBlockData, getImageBlockSize(&pImage->Header) * 8) == -1)
|
---|
2824 | rc = vdiDiscardBlockAsync(pImage, pIoCtx, uBlock, pvBlock);
|
---|
2825 | else
|
---|
2826 | {
|
---|
2827 | /* Block has data, create allocation bitmap. */
|
---|
2828 | *pcbPreAllocated = cbPreAllocated;
|
---|
2829 | *pcbPostAllocated = cbPostAllocated;
|
---|
2830 | *ppbmAllocationBitmap = vdiAllocationBitmapCreate(pbBlockData, getImageBlockSize(&pImage->Header));
|
---|
2831 | if (RT_UNLIKELY(!*ppbmAllocationBitmap))
|
---|
2832 | rc = VERR_NO_MEMORY;
|
---|
2833 | else
|
---|
2834 | rc = VERR_VD_DISCARD_ALIGNMENT_NOT_MET;
|
---|
2835 |
|
---|
2836 | RTMemFree(pvBlock);
|
---|
2837 | }
|
---|
2838 | } /* if: no complete block discarded */
|
---|
2839 | } /* if: Block is allocated. */
|
---|
2840 | /* else: nothing to do. */
|
---|
2841 | } while (0);
|
---|
2842 |
|
---|
2843 | if (pcbActuallyDiscarded)
|
---|
2844 | *pcbActuallyDiscarded = cbDiscard;
|
---|
2845 |
|
---|
2846 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2847 | return rc;
|
---|
2848 | }
|
---|
2849 |
|
---|
2850 | /** @copydoc VDIMAGEBACKEND::pfnRepair */
|
---|
2851 | static DECLCALLBACK(int) vdiRepair(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
|
---|
2852 | PVDINTERFACE pVDIfsImage, uint32_t fFlags)
|
---|
2853 | {
|
---|
2854 | LogFlowFunc(("pszFilename=\"%s\" pVDIfsDisk=%#p pVDIfsImage=%#p\n", pszFilename, pVDIfsDisk, pVDIfsImage));
|
---|
2855 | int rc;
|
---|
2856 | PVDINTERFACEERROR pIfError;
|
---|
2857 | PVDINTERFACEIOINT pIfIo;
|
---|
2858 | PVDIOSTORAGE pStorage;
|
---|
2859 | uint64_t cbFile;
|
---|
2860 | PVDIIMAGEBLOCKPOINTER paBlocks = NULL;
|
---|
2861 | uint32_t *pu32BlockBitmap = NULL;
|
---|
2862 | VDIPREHEADER PreHdr;
|
---|
2863 | VDIHEADER Hdr;
|
---|
2864 |
|
---|
2865 | pIfIo = VDIfIoIntGet(pVDIfsImage);
|
---|
2866 | AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER);
|
---|
2867 |
|
---|
2868 | pIfError = VDIfErrorGet(pVDIfsDisk);
|
---|
2869 |
|
---|
2870 | do
|
---|
2871 | {
|
---|
2872 | bool fRepairBlockArray = false;
|
---|
2873 | bool fRepairHdr = false;
|
---|
2874 |
|
---|
2875 | rc = vdIfIoIntFileOpen(pIfIo, pszFilename,
|
---|
2876 | VDOpenFlagsToFileOpenFlags( fFlags & VD_REPAIR_DRY_RUN
|
---|
2877 | ? VD_OPEN_FLAGS_READONLY
|
---|
2878 | : 0,
|
---|
2879 | false /* fCreate */),
|
---|
2880 | &pStorage);
|
---|
2881 | if (RT_FAILURE(rc))
|
---|
2882 | {
|
---|
2883 | rc = vdIfError(pIfError, rc, RT_SRC_POS, "VDI: Failed to open image \"%s\"", pszFilename);
|
---|
2884 | break;
|
---|
2885 | }
|
---|
2886 |
|
---|
2887 | rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile);
|
---|
2888 | if (RT_FAILURE(rc))
|
---|
2889 | {
|
---|
2890 | rc = vdIfError(pIfError, rc, RT_SRC_POS, "VDI: Failed to query image size");
|
---|
2891 | break;
|
---|
2892 | }
|
---|
2893 |
|
---|
2894 | /* Read pre-header. */
|
---|
2895 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, 0, &PreHdr, sizeof(PreHdr));
|
---|
2896 | if (RT_FAILURE(rc))
|
---|
2897 | {
|
---|
2898 | rc = vdIfError(pIfError, rc, RT_SRC_POS, N_("VDI: Error reading pre-header in '%s'"), pszFilename);
|
---|
2899 | break;
|
---|
2900 | }
|
---|
2901 | vdiConvPreHeaderEndianess(VDIECONV_F2H, &PreHdr, &PreHdr);
|
---|
2902 | rc = vdiValidatePreHeader(&PreHdr);
|
---|
2903 | if (RT_FAILURE(rc))
|
---|
2904 | {
|
---|
2905 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
2906 | N_("VDI: invalid pre-header in '%s'"), pszFilename);
|
---|
2907 | break;
|
---|
2908 | }
|
---|
2909 |
|
---|
2910 | /* Read header. */
|
---|
2911 | Hdr.uVersion = PreHdr.u32Version;
|
---|
2912 | switch (GET_MAJOR_HEADER_VERSION(&Hdr))
|
---|
2913 | {
|
---|
2914 | case 0:
|
---|
2915 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, sizeof(PreHdr),
|
---|
2916 | &Hdr.u.v0, sizeof(Hdr.u.v0));
|
---|
2917 | if (RT_FAILURE(rc))
|
---|
2918 | rc = vdIfError(pIfError, rc, RT_SRC_POS, N_("VDI: error reading v0 header in '%s'"),
|
---|
2919 | pszFilename);
|
---|
2920 | vdiConvHeaderEndianessV0(VDIECONV_F2H, &Hdr.u.v0, &Hdr.u.v0);
|
---|
2921 | break;
|
---|
2922 | case 1:
|
---|
2923 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, sizeof(PreHdr),
|
---|
2924 | &Hdr.u.v1, sizeof(Hdr.u.v1));
|
---|
2925 | if (RT_FAILURE(rc))
|
---|
2926 | {
|
---|
2927 | rc = vdIfError(pIfError, rc, RT_SRC_POS, N_("VDI: error reading v1 header in '%s'"),
|
---|
2928 | pszFilename);
|
---|
2929 | }
|
---|
2930 | vdiConvHeaderEndianessV1(VDIECONV_F2H, &Hdr.u.v1, &Hdr.u.v1);
|
---|
2931 | if (Hdr.u.v1.cbHeader >= sizeof(Hdr.u.v1plus))
|
---|
2932 | {
|
---|
2933 | /* Read the VDI 1.1+ header completely. */
|
---|
2934 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, sizeof(PreHdr),
|
---|
2935 | &Hdr.u.v1plus, sizeof(Hdr.u.v1plus));
|
---|
2936 | if (RT_FAILURE(rc))
|
---|
2937 | rc = vdIfError(pIfError, rc, RT_SRC_POS, N_("VDI: error reading v1.1+ header in '%s'"),
|
---|
2938 | pszFilename);
|
---|
2939 | vdiConvHeaderEndianessV1p(VDIECONV_F2H, &Hdr.u.v1plus, &Hdr.u.v1plus);
|
---|
2940 | }
|
---|
2941 | break;
|
---|
2942 | default:
|
---|
2943 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
2944 | N_("VDI: unsupported major version %u in '%s'"),
|
---|
2945 | GET_MAJOR_HEADER_VERSION(&Hdr), pszFilename);
|
---|
2946 | break;
|
---|
2947 | }
|
---|
2948 |
|
---|
2949 | if (RT_SUCCESS(rc))
|
---|
2950 | {
|
---|
2951 | rc = vdiValidateHeader(&Hdr);
|
---|
2952 | if (RT_FAILURE(rc))
|
---|
2953 | {
|
---|
2954 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
2955 | N_("VDI: invalid header in '%s'"), pszFilename);
|
---|
2956 | break;
|
---|
2957 | }
|
---|
2958 | }
|
---|
2959 |
|
---|
2960 | /*
|
---|
2961 | * Check that the disk size is correctly aligned,
|
---|
2962 | * see comment above the same check in vdiImageReadHeader().
|
---|
2963 | */
|
---|
2964 | uint64_t cbDisk = getImageDiskSize(&Hdr);
|
---|
2965 | if (cbDisk & 0x1ff)
|
---|
2966 | {
|
---|
2967 | uint64_t cbDiskNew = cbDisk & ~UINT64_C(0x1ff);
|
---|
2968 | vdIfErrorMessage(pIfError, "Disk size in the header is not sector aligned, rounding down (%llu -> %llu)\n",
|
---|
2969 | cbDisk, cbDiskNew);
|
---|
2970 | setImageDiskSize(&Hdr, cbDiskNew);
|
---|
2971 | fRepairHdr = true;
|
---|
2972 | }
|
---|
2973 |
|
---|
2974 | /* Setup image parameters by header. */
|
---|
2975 | uint64_t offStartBlocks, offStartData;
|
---|
2976 | size_t cbTotalBlockData;
|
---|
2977 |
|
---|
2978 | offStartBlocks = getImageBlocksOffset(&Hdr);
|
---|
2979 | offStartData = getImageDataOffset(&Hdr);
|
---|
2980 | cbTotalBlockData = getImageExtraBlockSize(&Hdr) + getImageBlockSize(&Hdr);
|
---|
2981 |
|
---|
2982 | /* Allocate memory for blocks array. */
|
---|
2983 | paBlocks = (PVDIIMAGEBLOCKPOINTER)RTMemAlloc(sizeof(VDIIMAGEBLOCKPOINTER) * getImageBlocks(&Hdr));
|
---|
2984 | if (!paBlocks)
|
---|
2985 | {
|
---|
2986 | rc = vdIfError(pIfError, VERR_NO_MEMORY, RT_SRC_POS,
|
---|
2987 | "Failed to allocate memory for block array");
|
---|
2988 | break;
|
---|
2989 | }
|
---|
2990 |
|
---|
2991 | /* Read blocks array. */
|
---|
2992 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, offStartBlocks, paBlocks,
|
---|
2993 | getImageBlocks(&Hdr) * sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
2994 | if (RT_FAILURE(rc))
|
---|
2995 | {
|
---|
2996 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
2997 | "Failed to read block array (at %llu), %Rrc",
|
---|
2998 | offStartBlocks, rc);
|
---|
2999 | break;
|
---|
3000 | }
|
---|
3001 | vdiConvBlocksEndianess(VDIECONV_F2H, paBlocks, getImageBlocks(&Hdr));
|
---|
3002 |
|
---|
3003 | pu32BlockBitmap = (uint32_t *)RTMemAllocZ(RT_ALIGN_Z(getImageBlocks(&Hdr) / 8, 4));
|
---|
3004 | if (!pu32BlockBitmap)
|
---|
3005 | {
|
---|
3006 | rc = vdIfError(pIfError, VERR_NO_MEMORY, RT_SRC_POS,
|
---|
3007 | "Failed to allocate memory for block bitmap");
|
---|
3008 | break;
|
---|
3009 | }
|
---|
3010 |
|
---|
3011 | for (uint32_t i = 0; i < getImageBlocks(&Hdr); i++)
|
---|
3012 | {
|
---|
3013 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(paBlocks[i]))
|
---|
3014 | {
|
---|
3015 | uint64_t offBlock = (uint64_t)paBlocks[i] * cbTotalBlockData
|
---|
3016 | + offStartData;
|
---|
3017 |
|
---|
3018 | /*
|
---|
3019 | * Check that the offsets are valid (inside of the image) and
|
---|
3020 | * that there are no double references.
|
---|
3021 | */
|
---|
3022 | if (offBlock + cbTotalBlockData > cbFile)
|
---|
3023 | {
|
---|
3024 | vdIfErrorMessage(pIfError, "Entry %u points to invalid offset %llu, clearing\n",
|
---|
3025 | i, offBlock);
|
---|
3026 | paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
3027 | fRepairBlockArray = true;
|
---|
3028 | }
|
---|
3029 | else if (ASMBitTestAndSet(pu32BlockBitmap, paBlocks[i]))
|
---|
3030 | {
|
---|
3031 | vdIfErrorMessage(pIfError, "Entry %u points to an already referenced data block, clearing\n",
|
---|
3032 | i);
|
---|
3033 | paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
3034 | fRepairBlockArray = true;
|
---|
3035 | }
|
---|
3036 | }
|
---|
3037 | }
|
---|
3038 |
|
---|
3039 | /* Write repaired structures now. */
|
---|
3040 | if (!fRepairBlockArray && !fRepairHdr)
|
---|
3041 | vdIfErrorMessage(pIfError, "VDI image is in a consistent state, no repair required\n");
|
---|
3042 | else if (!(fFlags & VD_REPAIR_DRY_RUN))
|
---|
3043 | {
|
---|
3044 | if (fRepairHdr)
|
---|
3045 | {
|
---|
3046 | switch (GET_MAJOR_HEADER_VERSION(&Hdr))
|
---|
3047 | {
|
---|
3048 | case 0:
|
---|
3049 | {
|
---|
3050 | VDIHEADER0 Hdr0;
|
---|
3051 | vdiConvHeaderEndianessV0(VDIECONV_H2F, &Hdr0, &Hdr.u.v0);
|
---|
3052 | rc = vdIfIoIntFileWriteSync(pIfIo, pStorage, sizeof(VDIPREHEADER),
|
---|
3053 | &Hdr0, sizeof(Hdr0));
|
---|
3054 | break;
|
---|
3055 | }
|
---|
3056 | case 1:
|
---|
3057 | if (Hdr.u.v1plus.cbHeader < sizeof(Hdr.u.v1plus))
|
---|
3058 | {
|
---|
3059 | VDIHEADER1 Hdr1;
|
---|
3060 | vdiConvHeaderEndianessV1(VDIECONV_H2F, &Hdr1, &Hdr.u.v1);
|
---|
3061 | rc = vdIfIoIntFileWriteSync(pIfIo, pStorage, sizeof(VDIPREHEADER),
|
---|
3062 | &Hdr1, sizeof(Hdr1));
|
---|
3063 | }
|
---|
3064 | else
|
---|
3065 | {
|
---|
3066 | VDIHEADER1PLUS Hdr1plus;
|
---|
3067 | vdiConvHeaderEndianessV1p(VDIECONV_H2F, &Hdr1plus, &Hdr.u.v1plus);
|
---|
3068 | rc = vdIfIoIntFileWriteSync(pIfIo, pStorage, sizeof(VDIPREHEADER),
|
---|
3069 | &Hdr1plus, sizeof(Hdr1plus));
|
---|
3070 | }
|
---|
3071 | break;
|
---|
3072 | default:
|
---|
3073 | AssertMsgFailed(("Header indicates unsupported version which should not happen here!\n"));
|
---|
3074 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
3075 | break;
|
---|
3076 | }
|
---|
3077 | }
|
---|
3078 |
|
---|
3079 | if (fRepairBlockArray)
|
---|
3080 | {
|
---|
3081 | vdIfErrorMessage(pIfError, "Writing repaired block allocation table...\n");
|
---|
3082 |
|
---|
3083 | vdiConvBlocksEndianess(VDIECONV_H2F, paBlocks, getImageBlocks(&Hdr));
|
---|
3084 | rc = vdIfIoIntFileWriteSync(pIfIo, pStorage, offStartBlocks, paBlocks,
|
---|
3085 | getImageBlocks(&Hdr) * sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
3086 | if (RT_FAILURE(rc))
|
---|
3087 | {
|
---|
3088 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
3089 | "Could not write repaired block allocation table (at %llu), %Rrc",
|
---|
3090 | offStartBlocks, rc);
|
---|
3091 | break;
|
---|
3092 | }
|
---|
3093 | }
|
---|
3094 | }
|
---|
3095 |
|
---|
3096 | vdIfErrorMessage(pIfError, "Corrupted VDI image repaired successfully\n");
|
---|
3097 | } while(0);
|
---|
3098 |
|
---|
3099 | if (paBlocks)
|
---|
3100 | RTMemFree(paBlocks);
|
---|
3101 |
|
---|
3102 | if (pu32BlockBitmap)
|
---|
3103 | RTMemFree(pu32BlockBitmap);
|
---|
3104 |
|
---|
3105 | if (pStorage)
|
---|
3106 | {
|
---|
3107 | int rc2 = vdIfIoIntFileClose(pIfIo, pStorage);
|
---|
3108 | if (RT_SUCCESS(rc))
|
---|
3109 | rc = rc2; /* Propagate error code only if repairing was successful. */
|
---|
3110 | }
|
---|
3111 |
|
---|
3112 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
3113 | return rc;
|
---|
3114 | }
|
---|
3115 |
|
---|
3116 | const VDIMAGEBACKEND g_VDIBackend =
|
---|
3117 | {
|
---|
3118 | /* u32Version */
|
---|
3119 | VD_IMGBACKEND_VERSION,
|
---|
3120 | /* pszBackendName */
|
---|
3121 | "VDI",
|
---|
3122 | /* uBackendCaps */
|
---|
3123 | VD_CAP_UUID | VD_CAP_CREATE_FIXED | VD_CAP_CREATE_DYNAMIC
|
---|
3124 | | VD_CAP_DIFF | VD_CAP_FILE | VD_CAP_ASYNC | VD_CAP_VFS | VD_CAP_DISCARD
|
---|
3125 | | VD_CAP_PREFERRED,
|
---|
3126 | /* paFileExtensions */
|
---|
3127 | s_aVdiFileExtensions,
|
---|
3128 | /* paConfigInfo */
|
---|
3129 | NULL,
|
---|
3130 | /* pfnProbe */
|
---|
3131 | vdiProbe,
|
---|
3132 | /* pfnOpen */
|
---|
3133 | vdiOpen,
|
---|
3134 | /* pfnCreate */
|
---|
3135 | vdiCreate,
|
---|
3136 | /* pfnRename */
|
---|
3137 | vdiRename,
|
---|
3138 | /* pfnClose */
|
---|
3139 | vdiClose,
|
---|
3140 | /* pfnRead */
|
---|
3141 | vdiRead,
|
---|
3142 | /* pfnWrite */
|
---|
3143 | vdiWrite,
|
---|
3144 | /* pfnFlush */
|
---|
3145 | vdiFlush,
|
---|
3146 | /* pfnDiscard */
|
---|
3147 | vdiDiscard,
|
---|
3148 | /* pfnGetVersion */
|
---|
3149 | vdiGetVersion,
|
---|
3150 | /* pfnGetFileSize */
|
---|
3151 | vdiGetFileSize,
|
---|
3152 | /* pfnGetPCHSGeometry */
|
---|
3153 | vdiGetPCHSGeometry,
|
---|
3154 | /* pfnSetPCHSGeometry */
|
---|
3155 | vdiSetPCHSGeometry,
|
---|
3156 | /* pfnGetLCHSGeometry */
|
---|
3157 | vdiGetLCHSGeometry,
|
---|
3158 | /* pfnSetLCHSGeometry */
|
---|
3159 | vdiSetLCHSGeometry,
|
---|
3160 | /* pfnQueryRegions */
|
---|
3161 | vdiQueryRegions,
|
---|
3162 | /* pfnRegionListRelease */
|
---|
3163 | vdiRegionListRelease,
|
---|
3164 | /* pfnGetImageFlags */
|
---|
3165 | vdiGetImageFlags,
|
---|
3166 | /* pfnGetOpenFlags */
|
---|
3167 | vdiGetOpenFlags,
|
---|
3168 | /* pfnSetOpenFlags */
|
---|
3169 | vdiSetOpenFlags,
|
---|
3170 | /* pfnGetComment */
|
---|
3171 | vdiGetComment,
|
---|
3172 | /* pfnSetComment */
|
---|
3173 | vdiSetComment,
|
---|
3174 | /* pfnGetUuid */
|
---|
3175 | vdiGetUuid,
|
---|
3176 | /* pfnSetUuid */
|
---|
3177 | vdiSetUuid,
|
---|
3178 | /* pfnGetModificationUuid */
|
---|
3179 | vdiGetModificationUuid,
|
---|
3180 | /* pfnSetModificationUuid */
|
---|
3181 | vdiSetModificationUuid,
|
---|
3182 | /* pfnGetParentUuid */
|
---|
3183 | vdiGetParentUuid,
|
---|
3184 | /* pfnSetParentUuid */
|
---|
3185 | vdiSetParentUuid,
|
---|
3186 | /* pfnGetParentModificationUuid */
|
---|
3187 | vdiGetParentModificationUuid,
|
---|
3188 | /* pfnSetParentModificationUuid */
|
---|
3189 | vdiSetParentModificationUuid,
|
---|
3190 | /* pfnDump */
|
---|
3191 | vdiDump,
|
---|
3192 | /* pfnGetTimestamp */
|
---|
3193 | NULL,
|
---|
3194 | /* pfnGetParentTimestamp */
|
---|
3195 | NULL,
|
---|
3196 | /* pfnSetParentTimestamp */
|
---|
3197 | NULL,
|
---|
3198 | /* pfnGetParentFilename */
|
---|
3199 | NULL,
|
---|
3200 | /* pfnSetParentFilename */
|
---|
3201 | NULL,
|
---|
3202 | /* pfnComposeLocation */
|
---|
3203 | genericFileComposeLocation,
|
---|
3204 | /* pfnComposeName */
|
---|
3205 | genericFileComposeName,
|
---|
3206 | /* pfnCompact */
|
---|
3207 | vdiCompact,
|
---|
3208 | /* pfnResize */
|
---|
3209 | vdiResize,
|
---|
3210 | /* pfnRepair */
|
---|
3211 | vdiRepair,
|
---|
3212 | /* pfnTraverseMetadata */
|
---|
3213 | NULL,
|
---|
3214 | /* u32VersionEnd */
|
---|
3215 | VD_IMGBACKEND_VERSION
|
---|
3216 | };
|
---|