1 | /* $Id: VDI.cpp 103524 2024-02-22 11:17:44Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * Virtual Disk Image (VDI), Core Code.
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
|
---|
8 | *
|
---|
9 | * This file is part of VirtualBox base platform packages, as
|
---|
10 | * available from https://www.virtualbox.org.
|
---|
11 | *
|
---|
12 | * This program is free software; you can redistribute it and/or
|
---|
13 | * modify it under the terms of the GNU General Public License
|
---|
14 | * as published by the Free Software Foundation, in version 3 of the
|
---|
15 | * License.
|
---|
16 | *
|
---|
17 | * This program is distributed in the hope that it will be useful, but
|
---|
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
20 | * General Public License for more details.
|
---|
21 | *
|
---|
22 | * You should have received a copy of the GNU General Public License
|
---|
23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
---|
24 | *
|
---|
25 | * SPDX-License-Identifier: GPL-3.0-only
|
---|
26 | */
|
---|
27 |
|
---|
28 |
|
---|
29 | /*********************************************************************************************************************************
|
---|
30 | * Header Files *
|
---|
31 | *********************************************************************************************************************************/
|
---|
32 | #define LOG_GROUP LOG_GROUP_VD_VDI
|
---|
33 | #include <VBox/vd-plugin.h>
|
---|
34 | #include "VDICore.h"
|
---|
35 | #include <VBox/err.h>
|
---|
36 |
|
---|
37 | #include <VBox/log.h>
|
---|
38 | #include <iprt/alloc.h>
|
---|
39 | #include <iprt/assert.h>
|
---|
40 | #include <iprt/uuid.h>
|
---|
41 | #include <iprt/string.h>
|
---|
42 | #include <iprt/asm.h>
|
---|
43 |
|
---|
44 | #include "VDBackends.h"
|
---|
45 |
|
---|
46 | #define VDI_IMAGE_DEFAULT_BLOCK_SIZE _1M
|
---|
47 |
|
---|
48 | /** Macros for endianess conversion. */
|
---|
49 | #define SET_ENDIAN_U32(conv, u32) (conv == VDIECONV_H2F ? RT_H2LE_U32(u32) : RT_LE2H_U32(u32))
|
---|
50 | #define SET_ENDIAN_U64(conv, u64) (conv == VDIECONV_H2F ? RT_H2LE_U64(u64) : RT_LE2H_U64(u64))
|
---|
51 |
|
---|
52 | static const char *vdiAllocationBlockSize = "1048576";
|
---|
53 |
|
---|
54 | static const VDCONFIGINFO vdiConfigInfo[] =
|
---|
55 | {
|
---|
56 | { "AllocationBlockSize", vdiAllocationBlockSize, VDCFGVALUETYPE_INTEGER, VD_CFGKEY_CREATEONLY },
|
---|
57 | { NULL, NULL, VDCFGVALUETYPE_INTEGER, 0 }
|
---|
58 | };
|
---|
59 |
|
---|
60 |
|
---|
61 | /*********************************************************************************************************************************
|
---|
62 | * Static Variables *
|
---|
63 | *********************************************************************************************************************************/
|
---|
64 |
|
---|
65 | /** NULL-terminated array of supported file extensions. */
|
---|
66 | static const VDFILEEXTENSION s_aVdiFileExtensions[] =
|
---|
67 | {
|
---|
68 | {"vdi", VDTYPE_HDD},
|
---|
69 | {NULL, VDTYPE_INVALID}
|
---|
70 | };
|
---|
71 |
|
---|
72 |
|
---|
73 | /*********************************************************************************************************************************
|
---|
74 | * Internal Functions *
|
---|
75 | *********************************************************************************************************************************/
|
---|
76 | static unsigned getPowerOfTwo(unsigned uNumber);
|
---|
77 | static void vdiInitPreHeader(PVDIPREHEADER pPreHdr);
|
---|
78 | static int vdiValidatePreHeader(PVDIPREHEADER pPreHdr);
|
---|
79 | static int vdiValidateHeader(PVDIHEADER pHeader);
|
---|
80 | static void vdiSetupImageDesc(PVDIIMAGEDESC pImage);
|
---|
81 | static int vdiUpdateHeader(PVDIIMAGEDESC pImage);
|
---|
82 | static int vdiUpdateBlockInfo(PVDIIMAGEDESC pImage, unsigned uBlock);
|
---|
83 | static int vdiUpdateHeaderAsync(PVDIIMAGEDESC pImage, PVDIOCTX pIoCtx);
|
---|
84 | static int vdiUpdateBlockInfoAsync(PVDIIMAGEDESC pImage, unsigned uBlock, PVDIOCTX pIoCtx,
|
---|
85 | bool fUpdateHdr);
|
---|
86 |
|
---|
87 | /**
|
---|
88 | * Internal: Convert the PreHeader fields to the appropriate endianess.
|
---|
89 | * @param enmConv Direction of the conversion.
|
---|
90 | * @param pPreHdrConv Where to store the converted pre header.
|
---|
91 | * @param pPreHdr PreHeader pointer.
|
---|
92 | */
|
---|
93 | static void vdiConvPreHeaderEndianess(VDIECONV enmConv, PVDIPREHEADER pPreHdrConv,
|
---|
94 | PVDIPREHEADER pPreHdr)
|
---|
95 | {
|
---|
96 | memcpy(pPreHdrConv->szFileInfo, pPreHdr->szFileInfo, sizeof(pPreHdr->szFileInfo));
|
---|
97 | pPreHdrConv->u32Signature = SET_ENDIAN_U32(enmConv, pPreHdr->u32Signature);
|
---|
98 | pPreHdrConv->u32Version = SET_ENDIAN_U32(enmConv, pPreHdr->u32Version);
|
---|
99 | }
|
---|
100 |
|
---|
101 | /**
|
---|
102 | * Internal: Convert the VDIDISKGEOMETRY fields to the appropriate endianess.
|
---|
103 | * @param enmConv Direction of the conversion.
|
---|
104 | * @param pDiskGeoConv Where to store the converted geometry.
|
---|
105 | * @param pDiskGeo Pointer to the disk geometry to convert.
|
---|
106 | */
|
---|
107 | static void vdiConvGeometryEndianess(VDIECONV enmConv, PVDIDISKGEOMETRY pDiskGeoConv,
|
---|
108 | PVDIDISKGEOMETRY pDiskGeo)
|
---|
109 | {
|
---|
110 | pDiskGeoConv->cCylinders = SET_ENDIAN_U32(enmConv, pDiskGeo->cCylinders);
|
---|
111 | pDiskGeoConv->cHeads = SET_ENDIAN_U32(enmConv, pDiskGeo->cHeads);
|
---|
112 | pDiskGeoConv->cSectors = SET_ENDIAN_U32(enmConv, pDiskGeo->cSectors);
|
---|
113 | pDiskGeoConv->cbSector = SET_ENDIAN_U32(enmConv, pDiskGeo->cbSector);
|
---|
114 | }
|
---|
115 |
|
---|
116 | /**
|
---|
117 | * Internal: Convert the Header - version 0 fields to the appropriate endianess.
|
---|
118 | * @param enmConv Direction of the conversion.
|
---|
119 | * @param pHdrConv Where to store the converted header.
|
---|
120 | * @param pHdr Pointer to the version 0 header.
|
---|
121 | */
|
---|
122 | static void vdiConvHeaderEndianessV0(VDIECONV enmConv, PVDIHEADER0 pHdrConv,
|
---|
123 | PVDIHEADER0 pHdr)
|
---|
124 | {
|
---|
125 | memmove(pHdrConv->szComment, pHdr->szComment, sizeof(pHdr->szComment));
|
---|
126 | pHdrConv->u32Type = SET_ENDIAN_U32(enmConv, pHdr->u32Type);
|
---|
127 | pHdrConv->fFlags = SET_ENDIAN_U32(enmConv, pHdr->fFlags);
|
---|
128 | vdiConvGeometryEndianess(enmConv, &pHdrConv->LegacyGeometry, &pHdr->LegacyGeometry);
|
---|
129 | pHdrConv->cbDisk = SET_ENDIAN_U64(enmConv, pHdr->cbDisk);
|
---|
130 | pHdrConv->cbBlock = SET_ENDIAN_U32(enmConv, pHdr->cbBlock);
|
---|
131 | pHdrConv->cBlocks = SET_ENDIAN_U32(enmConv, pHdr->cBlocks);
|
---|
132 | pHdrConv->cBlocksAllocated = SET_ENDIAN_U32(enmConv, pHdr->cBlocksAllocated);
|
---|
133 | /* Don't convert the RTUUID fields. */
|
---|
134 | pHdrConv->uuidCreate = pHdr->uuidCreate;
|
---|
135 | pHdrConv->uuidModify = pHdr->uuidModify;
|
---|
136 | pHdrConv->uuidLinkage = pHdr->uuidLinkage;
|
---|
137 | }
|
---|
138 |
|
---|
139 | /**
|
---|
140 | * Internal: Set the Header - version 1 fields to the appropriate endianess.
|
---|
141 | * @param enmConv Direction of the conversion.
|
---|
142 | * @param pHdrConv Where to store the converted header.
|
---|
143 | * @param pHdr Version 1 Header pointer.
|
---|
144 | */
|
---|
145 | static void vdiConvHeaderEndianessV1(VDIECONV enmConv, PVDIHEADER1 pHdrConv,
|
---|
146 | PVDIHEADER1 pHdr)
|
---|
147 | {
|
---|
148 | memmove(pHdrConv->szComment, pHdr->szComment, sizeof(pHdr->szComment));
|
---|
149 | pHdrConv->cbHeader = SET_ENDIAN_U32(enmConv, pHdr->cbHeader);
|
---|
150 | pHdrConv->u32Type = SET_ENDIAN_U32(enmConv, pHdr->u32Type);
|
---|
151 | pHdrConv->fFlags = SET_ENDIAN_U32(enmConv, pHdr->fFlags);
|
---|
152 | pHdrConv->offBlocks = SET_ENDIAN_U32(enmConv, pHdr->offBlocks);
|
---|
153 | pHdrConv->offData = SET_ENDIAN_U32(enmConv, pHdr->offData);
|
---|
154 | vdiConvGeometryEndianess(enmConv, &pHdrConv->LegacyGeometry, &pHdr->LegacyGeometry);
|
---|
155 | pHdrConv->u32Dummy = SET_ENDIAN_U32(enmConv, pHdr->u32Dummy);
|
---|
156 | pHdrConv->cbDisk = SET_ENDIAN_U64(enmConv, pHdr->cbDisk);
|
---|
157 | pHdrConv->cbBlock = SET_ENDIAN_U32(enmConv, pHdr->cbBlock);
|
---|
158 | pHdrConv->cbBlockExtra = SET_ENDIAN_U32(enmConv, pHdr->cbBlockExtra);
|
---|
159 | pHdrConv->cBlocks = SET_ENDIAN_U32(enmConv, pHdr->cBlocks);
|
---|
160 | pHdrConv->cBlocksAllocated = SET_ENDIAN_U32(enmConv, pHdr->cBlocksAllocated);
|
---|
161 | /* Don't convert the RTUUID fields. */
|
---|
162 | pHdrConv->uuidCreate = pHdr->uuidCreate;
|
---|
163 | pHdrConv->uuidModify = pHdr->uuidModify;
|
---|
164 | pHdrConv->uuidLinkage = pHdr->uuidLinkage;
|
---|
165 | pHdrConv->uuidParentModify = pHdr->uuidParentModify;
|
---|
166 | }
|
---|
167 |
|
---|
168 | /**
|
---|
169 | * Internal: Set the Header - version 1plus fields to the appropriate endianess.
|
---|
170 | * @param enmConv Direction of the conversion.
|
---|
171 | * @param pHdrConv Where to store the converted header.
|
---|
172 | * @param pHdr Version 1+ Header pointer.
|
---|
173 | */
|
---|
174 | static void vdiConvHeaderEndianessV1p(VDIECONV enmConv, PVDIHEADER1PLUS pHdrConv,
|
---|
175 | PVDIHEADER1PLUS pHdr)
|
---|
176 | {
|
---|
177 | memmove(pHdrConv->szComment, pHdr->szComment, sizeof(pHdr->szComment));
|
---|
178 | pHdrConv->cbHeader = SET_ENDIAN_U32(enmConv, pHdr->cbHeader);
|
---|
179 | pHdrConv->u32Type = SET_ENDIAN_U32(enmConv, pHdr->u32Type);
|
---|
180 | pHdrConv->fFlags = SET_ENDIAN_U32(enmConv, pHdr->fFlags);
|
---|
181 | pHdrConv->offBlocks = SET_ENDIAN_U32(enmConv, pHdr->offBlocks);
|
---|
182 | pHdrConv->offData = SET_ENDIAN_U32(enmConv, pHdr->offData);
|
---|
183 | vdiConvGeometryEndianess(enmConv, &pHdrConv->LegacyGeometry, &pHdr->LegacyGeometry);
|
---|
184 | pHdrConv->u32Dummy = SET_ENDIAN_U32(enmConv, pHdr->u32Dummy);
|
---|
185 | pHdrConv->cbDisk = SET_ENDIAN_U64(enmConv, pHdr->cbDisk);
|
---|
186 | pHdrConv->cbBlock = SET_ENDIAN_U32(enmConv, pHdr->cbBlock);
|
---|
187 | pHdrConv->cbBlockExtra = SET_ENDIAN_U32(enmConv, pHdr->cbBlockExtra);
|
---|
188 | pHdrConv->cBlocks = SET_ENDIAN_U32(enmConv, pHdr->cBlocks);
|
---|
189 | pHdrConv->cBlocksAllocated = SET_ENDIAN_U32(enmConv, pHdr->cBlocksAllocated);
|
---|
190 | /* Don't convert the RTUUID fields. */
|
---|
191 | pHdrConv->uuidCreate = pHdr->uuidCreate;
|
---|
192 | pHdrConv->uuidModify = pHdr->uuidModify;
|
---|
193 | pHdrConv->uuidLinkage = pHdr->uuidLinkage;
|
---|
194 | pHdrConv->uuidParentModify = pHdr->uuidParentModify;
|
---|
195 | vdiConvGeometryEndianess(enmConv, &pHdrConv->LCHSGeometry, &pHdr->LCHSGeometry);
|
---|
196 | }
|
---|
197 |
|
---|
198 |
|
---|
199 | /**
|
---|
200 | * Internal: Set the appropriate endianess on all the Blocks pointed.
|
---|
201 | * @param enmConv Direction of the conversion.
|
---|
202 | * @param paBlocks Pointer to the block array.
|
---|
203 | * @param cEntries Number of entries in the block array.
|
---|
204 | *
|
---|
205 | * @note Unlike the other conversion functions this method does an in place conversion
|
---|
206 | * to avoid temporary memory allocations when writing the block array.
|
---|
207 | */
|
---|
208 | static void vdiConvBlocksEndianess(VDIECONV enmConv, PVDIIMAGEBLOCKPOINTER paBlocks,
|
---|
209 | unsigned cEntries)
|
---|
210 | {
|
---|
211 | for (unsigned i = 0; i < cEntries; i++)
|
---|
212 | paBlocks[i] = SET_ENDIAN_U32(enmConv, paBlocks[i]);
|
---|
213 | }
|
---|
214 |
|
---|
215 | /**
|
---|
216 | * Internal: Flush the image file to disk.
|
---|
217 | */
|
---|
218 | static void vdiFlushImage(PVDIIMAGEDESC pImage)
|
---|
219 | {
|
---|
220 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
221 | {
|
---|
222 | /* Save header. */
|
---|
223 | int rc = vdiUpdateHeader(pImage);
|
---|
224 | AssertMsgRC(rc, ("vdiUpdateHeader() failed, filename=\"%s\", rc=%Rrc\n",
|
---|
225 | pImage->pszFilename, rc));
|
---|
226 | vdIfIoIntFileFlushSync(pImage->pIfIo, pImage->pStorage);
|
---|
227 | }
|
---|
228 | }
|
---|
229 |
|
---|
230 | /**
|
---|
231 | * Internal: Free all allocated space for representing an image, and optionally
|
---|
232 | * delete the image from disk.
|
---|
233 | */
|
---|
234 | static int vdiFreeImage(PVDIIMAGEDESC pImage, bool fDelete)
|
---|
235 | {
|
---|
236 | int rc = VINF_SUCCESS;
|
---|
237 |
|
---|
238 | /* Freeing a never allocated image (e.g. because the open failed) is
|
---|
239 | * not signalled as an error. After all nothing bad happens. */
|
---|
240 | if (pImage)
|
---|
241 | {
|
---|
242 | if (pImage->pStorage)
|
---|
243 | {
|
---|
244 | /* No point updating the file that is deleted anyway. */
|
---|
245 | if (!fDelete)
|
---|
246 | vdiFlushImage(pImage);
|
---|
247 |
|
---|
248 | rc = vdIfIoIntFileClose(pImage->pIfIo, pImage->pStorage);
|
---|
249 | pImage->pStorage = NULL;
|
---|
250 | }
|
---|
251 |
|
---|
252 | if (pImage->paBlocks)
|
---|
253 | {
|
---|
254 | RTMemFree(pImage->paBlocks);
|
---|
255 | pImage->paBlocks = NULL;
|
---|
256 | }
|
---|
257 |
|
---|
258 | if (pImage->paBlocksRev)
|
---|
259 | {
|
---|
260 | RTMemFree(pImage->paBlocksRev);
|
---|
261 | pImage->paBlocksRev = NULL;
|
---|
262 | }
|
---|
263 |
|
---|
264 | if (fDelete && pImage->pszFilename)
|
---|
265 | {
|
---|
266 | int rc2 = vdIfIoIntFileDelete(pImage->pIfIo, pImage->pszFilename);
|
---|
267 | if (RT_SUCCESS(rc))
|
---|
268 | rc = rc2;
|
---|
269 | }
|
---|
270 | }
|
---|
271 |
|
---|
272 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
273 | return rc;
|
---|
274 | }
|
---|
275 |
|
---|
276 | /**
|
---|
277 | * internal: return power of 2 or 0 if num error.
|
---|
278 | */
|
---|
279 | static unsigned getPowerOfTwo(unsigned uNumber)
|
---|
280 | {
|
---|
281 | if (uNumber == 0)
|
---|
282 | return 0;
|
---|
283 | unsigned uPower2 = 0;
|
---|
284 | while ((uNumber & 1) == 0)
|
---|
285 | {
|
---|
286 | uNumber >>= 1;
|
---|
287 | uPower2++;
|
---|
288 | }
|
---|
289 | return uNumber == 1 ? uPower2 : 0;
|
---|
290 | }
|
---|
291 |
|
---|
292 | /**
|
---|
293 | * Internal: Init VDI preheader.
|
---|
294 | */
|
---|
295 | static void vdiInitPreHeader(PVDIPREHEADER pPreHdr)
|
---|
296 | {
|
---|
297 | pPreHdr->u32Signature = VDI_IMAGE_SIGNATURE;
|
---|
298 | pPreHdr->u32Version = VDI_IMAGE_VERSION;
|
---|
299 | memset(pPreHdr->szFileInfo, 0, sizeof(pPreHdr->szFileInfo));
|
---|
300 | strncat(pPreHdr->szFileInfo, VDI_IMAGE_FILE_INFO, sizeof(pPreHdr->szFileInfo)-1);
|
---|
301 | }
|
---|
302 |
|
---|
303 | /**
|
---|
304 | * Internal: check VDI preheader.
|
---|
305 | */
|
---|
306 | static int vdiValidatePreHeader(PVDIPREHEADER pPreHdr)
|
---|
307 | {
|
---|
308 | if (pPreHdr->u32Signature != VDI_IMAGE_SIGNATURE)
|
---|
309 | return VERR_VD_VDI_INVALID_HEADER;
|
---|
310 |
|
---|
311 | if ( VDI_GET_VERSION_MAJOR(pPreHdr->u32Version) != VDI_IMAGE_VERSION_MAJOR
|
---|
312 | && pPreHdr->u32Version != 0x00000002) /* old version. */
|
---|
313 | return VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
314 |
|
---|
315 | return VINF_SUCCESS;
|
---|
316 | }
|
---|
317 |
|
---|
318 | /**
|
---|
319 | * Internal: translate VD image flags to VDI image type enum.
|
---|
320 | */
|
---|
321 | static VDIIMAGETYPE vdiTranslateImageFlags2VDI(unsigned uImageFlags)
|
---|
322 | {
|
---|
323 | if (uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
324 | return VDI_IMAGE_TYPE_FIXED;
|
---|
325 | else if (uImageFlags & VD_IMAGE_FLAGS_DIFF)
|
---|
326 | return VDI_IMAGE_TYPE_DIFF;
|
---|
327 | else
|
---|
328 | return VDI_IMAGE_TYPE_NORMAL;
|
---|
329 | }
|
---|
330 |
|
---|
331 | /**
|
---|
332 | * Internal: translate VDI image type enum to VD image type enum.
|
---|
333 | */
|
---|
334 | static unsigned vdiTranslateVDI2ImageFlags(VDIIMAGETYPE enmType)
|
---|
335 | {
|
---|
336 | switch (enmType)
|
---|
337 | {
|
---|
338 | case VDI_IMAGE_TYPE_NORMAL:
|
---|
339 | return VD_IMAGE_FLAGS_NONE;
|
---|
340 | case VDI_IMAGE_TYPE_FIXED:
|
---|
341 | return VD_IMAGE_FLAGS_FIXED;
|
---|
342 | case VDI_IMAGE_TYPE_DIFF:
|
---|
343 | return VD_IMAGE_FLAGS_DIFF;
|
---|
344 | default:
|
---|
345 | AssertMsgFailed(("invalid VDIIMAGETYPE enmType=%d\n", (int)enmType));
|
---|
346 | return VD_IMAGE_FLAGS_NONE;
|
---|
347 | }
|
---|
348 | }
|
---|
349 |
|
---|
350 | /**
|
---|
351 | * Internal: Init VDI header. Always use latest header version.
|
---|
352 | *
|
---|
353 | * @param pHeader Assumes it was initially initialized to all zeros.
|
---|
354 | * @param uImageFlags Flags for this image.
|
---|
355 | * @param pszComment Optional comment to set for the image.
|
---|
356 | * @param cbDisk Size of the disk in bytes.
|
---|
357 | * @param cbBlock Size of one block in the image.
|
---|
358 | * @param cbBlockExtra Extra data for one block private to the image.
|
---|
359 | * @param cbDataAlign The alignment for all data structures.
|
---|
360 | */
|
---|
361 | static void vdiInitHeader(PVDIHEADER pHeader, uint32_t uImageFlags,
|
---|
362 | const char *pszComment, uint64_t cbDisk,
|
---|
363 | uint32_t cbBlock, uint32_t cbBlockExtra,
|
---|
364 | uint32_t cbDataAlign)
|
---|
365 | {
|
---|
366 | pHeader->uVersion = VDI_IMAGE_VERSION;
|
---|
367 | pHeader->u.v1plus.cbHeader = sizeof(VDIHEADER1PLUS);
|
---|
368 | pHeader->u.v1plus.u32Type = (uint32_t)vdiTranslateImageFlags2VDI(uImageFlags);
|
---|
369 | pHeader->u.v1plus.fFlags = (uImageFlags & VD_VDI_IMAGE_FLAGS_ZERO_EXPAND) ? 1 : 0;
|
---|
370 | #ifdef VBOX_STRICT
|
---|
371 | char achZero[VDI_IMAGE_COMMENT_SIZE] = {0};
|
---|
372 | Assert(!memcmp(pHeader->u.v1plus.szComment, achZero, VDI_IMAGE_COMMENT_SIZE));
|
---|
373 | #endif
|
---|
374 | pHeader->u.v1plus.szComment[0] = '\0';
|
---|
375 | if (pszComment)
|
---|
376 | {
|
---|
377 | AssertMsg(strlen(pszComment) < sizeof(pHeader->u.v1plus.szComment),
|
---|
378 | ("HDD Comment is too long, cb=%d\n", strlen(pszComment)));
|
---|
379 | strncat(pHeader->u.v1plus.szComment, pszComment, sizeof(pHeader->u.v1plus.szComment)-1);
|
---|
380 | }
|
---|
381 |
|
---|
382 | /* Mark the legacy geometry not-calculated. */
|
---|
383 | pHeader->u.v1plus.LegacyGeometry.cCylinders = 0;
|
---|
384 | pHeader->u.v1plus.LegacyGeometry.cHeads = 0;
|
---|
385 | pHeader->u.v1plus.LegacyGeometry.cSectors = 0;
|
---|
386 | pHeader->u.v1plus.LegacyGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
387 | pHeader->u.v1plus.u32Dummy = 0; /* used to be the translation value */
|
---|
388 |
|
---|
389 | pHeader->u.v1plus.cbDisk = cbDisk;
|
---|
390 | pHeader->u.v1plus.cbBlock = cbBlock;
|
---|
391 | pHeader->u.v1plus.cBlocks = (uint32_t)(cbDisk / cbBlock);
|
---|
392 | if (cbDisk % cbBlock)
|
---|
393 | pHeader->u.v1plus.cBlocks++;
|
---|
394 | pHeader->u.v1plus.cbBlockExtra = cbBlockExtra;
|
---|
395 | pHeader->u.v1plus.cBlocksAllocated = 0;
|
---|
396 |
|
---|
397 | /* Init offsets. */
|
---|
398 | pHeader->u.v1plus.offBlocks = RT_ALIGN_32(sizeof(VDIPREHEADER) + sizeof(VDIHEADER1PLUS), cbDataAlign);
|
---|
399 | pHeader->u.v1plus.offData = RT_ALIGN_32(pHeader->u.v1plus.offBlocks + (pHeader->u.v1plus.cBlocks * sizeof(VDIIMAGEBLOCKPOINTER)), cbDataAlign);
|
---|
400 |
|
---|
401 | /* Init uuids. */
|
---|
402 | #ifdef _MSC_VER
|
---|
403 | # pragma warning(disable:4366) /* (harmless "misalignment") */
|
---|
404 | #endif
|
---|
405 | RTUuidCreate(&pHeader->u.v1plus.uuidCreate);
|
---|
406 | RTUuidClear(&pHeader->u.v1plus.uuidModify);
|
---|
407 | RTUuidClear(&pHeader->u.v1plus.uuidLinkage);
|
---|
408 | RTUuidClear(&pHeader->u.v1plus.uuidParentModify);
|
---|
409 | #ifdef _MSC_VER
|
---|
410 | # pragma warning(default:4366)
|
---|
411 | #endif
|
---|
412 |
|
---|
413 | /* Mark LCHS geometry not-calculated. */
|
---|
414 | pHeader->u.v1plus.LCHSGeometry.cCylinders = 0;
|
---|
415 | pHeader->u.v1plus.LCHSGeometry.cHeads = 0;
|
---|
416 | pHeader->u.v1plus.LCHSGeometry.cSectors = 0;
|
---|
417 | pHeader->u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
418 | }
|
---|
419 |
|
---|
420 | /**
|
---|
421 | * Internal: Check VDI header.
|
---|
422 | */
|
---|
423 | static int vdiValidateHeader(PVDIHEADER pHeader)
|
---|
424 | {
|
---|
425 | /* Check version-dependent header parameters. */
|
---|
426 | switch (GET_MAJOR_HEADER_VERSION(pHeader))
|
---|
427 | {
|
---|
428 | case 0:
|
---|
429 | {
|
---|
430 | /* Old header version. */
|
---|
431 | break;
|
---|
432 | }
|
---|
433 | case 1:
|
---|
434 | {
|
---|
435 | /* Current header version. */
|
---|
436 |
|
---|
437 | if (pHeader->u.v1.cbHeader < sizeof(VDIHEADER1))
|
---|
438 | {
|
---|
439 | LogRel(("VDI: v1 header size wrong (%d < %d)\n",
|
---|
440 | pHeader->u.v1.cbHeader, sizeof(VDIHEADER1)));
|
---|
441 | return VERR_VD_VDI_INVALID_HEADER;
|
---|
442 | }
|
---|
443 |
|
---|
444 | if (getImageBlocksOffset(pHeader) < (sizeof(VDIPREHEADER) + sizeof(VDIHEADER1)))
|
---|
445 | {
|
---|
446 | LogRel(("VDI: v1 blocks offset wrong (%d < %d)\n",
|
---|
447 | getImageBlocksOffset(pHeader), sizeof(VDIPREHEADER) + sizeof(VDIHEADER1)));
|
---|
448 | return VERR_VD_VDI_INVALID_HEADER;
|
---|
449 | }
|
---|
450 |
|
---|
451 | if (getImageDataOffset(pHeader) < (getImageBlocksOffset(pHeader) + getImageBlocks(pHeader) * sizeof(VDIIMAGEBLOCKPOINTER)))
|
---|
452 | {
|
---|
453 | LogRel(("VDI: v1 image data offset wrong (%d < %d)\n",
|
---|
454 | getImageDataOffset(pHeader), getImageBlocksOffset(pHeader) + getImageBlocks(pHeader) * sizeof(VDIIMAGEBLOCKPOINTER)));
|
---|
455 | return VERR_VD_VDI_INVALID_HEADER;
|
---|
456 | }
|
---|
457 |
|
---|
458 | break;
|
---|
459 | }
|
---|
460 | default:
|
---|
461 | /* Unsupported. */
|
---|
462 | return VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
463 | }
|
---|
464 |
|
---|
465 | /* Check common header parameters. */
|
---|
466 |
|
---|
467 | bool fFailed = false;
|
---|
468 |
|
---|
469 | if ( getImageType(pHeader) < VDI_IMAGE_TYPE_FIRST
|
---|
470 | || getImageType(pHeader) > VDI_IMAGE_TYPE_LAST)
|
---|
471 | {
|
---|
472 | LogRel(("VDI: bad image type %d\n", getImageType(pHeader)));
|
---|
473 | fFailed = true;
|
---|
474 | }
|
---|
475 |
|
---|
476 | if (getImageFlags(pHeader) & ~VD_VDI_IMAGE_FLAGS_MASK)
|
---|
477 | {
|
---|
478 | LogRel(("VDI: bad image flags %08x\n", getImageFlags(pHeader)));
|
---|
479 | fFailed = true;
|
---|
480 | }
|
---|
481 |
|
---|
482 | PVDIDISKGEOMETRY pLCHSGeom = getImageLCHSGeometry(pHeader);
|
---|
483 | if ( pLCHSGeom
|
---|
484 | && pLCHSGeom->cbSector != VDI_GEOMETRY_SECTOR_SIZE)
|
---|
485 | {
|
---|
486 | LogRel(("VDI: wrong sector size (%d != %d)\n", pLCHSGeom->cbSector, VDI_GEOMETRY_SECTOR_SIZE));
|
---|
487 | fFailed = true;
|
---|
488 | }
|
---|
489 |
|
---|
490 | if ( getImageDiskSize(pHeader) == 0
|
---|
491 | || getImageBlockSize(pHeader) == 0
|
---|
492 | || getImageBlocks(pHeader) == 0
|
---|
493 | || getPowerOfTwo(getImageBlockSize(pHeader)) == 0)
|
---|
494 | {
|
---|
495 | LogRel(("VDI: wrong size (%lld, %d, %d, %d)\n",
|
---|
496 | getImageDiskSize(pHeader), getImageBlockSize(pHeader),
|
---|
497 | getImageBlocks(pHeader), getPowerOfTwo(getImageBlockSize(pHeader))));
|
---|
498 | fFailed = true;
|
---|
499 | }
|
---|
500 |
|
---|
501 | if (getImageBlocksAllocated(pHeader) > getImageBlocks(pHeader))
|
---|
502 | {
|
---|
503 | LogRel(("VDI: too many blocks allocated (%d > %d)\n"
|
---|
504 | " blocksize=%d disksize=%lld\n",
|
---|
505 | getImageBlocksAllocated(pHeader), getImageBlocks(pHeader),
|
---|
506 | getImageBlockSize(pHeader), getImageDiskSize(pHeader)));
|
---|
507 | fFailed = true;
|
---|
508 | }
|
---|
509 |
|
---|
510 | if ( getImageExtraBlockSize(pHeader) != 0
|
---|
511 | && getPowerOfTwo(getImageExtraBlockSize(pHeader)) == 0)
|
---|
512 | {
|
---|
513 | LogRel(("VDI: wrong extra size (%d, %d)\n",
|
---|
514 | getImageExtraBlockSize(pHeader), getPowerOfTwo(getImageExtraBlockSize(pHeader))));
|
---|
515 | fFailed = true;
|
---|
516 | }
|
---|
517 |
|
---|
518 | if ((uint64_t)getImageBlockSize(pHeader) * getImageBlocks(pHeader) < getImageDiskSize(pHeader))
|
---|
519 | {
|
---|
520 | LogRel(("VDI: wrong disk size (%d, %d, %lld)\n",
|
---|
521 | getImageBlockSize(pHeader), getImageBlocks(pHeader), getImageDiskSize(pHeader)));
|
---|
522 | fFailed = true;
|
---|
523 | }
|
---|
524 |
|
---|
525 | if (RTUuidIsNull(getImageCreationUUID(pHeader)))
|
---|
526 | {
|
---|
527 | LogRel(("VDI: uuid of creator is 0\n"));
|
---|
528 | fFailed = true;
|
---|
529 | }
|
---|
530 |
|
---|
531 | if (RTUuidIsNull(getImageModificationUUID(pHeader)))
|
---|
532 | {
|
---|
533 | LogRel(("VDI: uuid of modifier is 0\n"));
|
---|
534 | fFailed = true;
|
---|
535 | }
|
---|
536 |
|
---|
537 | return fFailed ? VERR_VD_VDI_INVALID_HEADER : VINF_SUCCESS;
|
---|
538 | }
|
---|
539 |
|
---|
540 | /**
|
---|
541 | * Internal: Set up VDIIMAGEDESC structure by image header.
|
---|
542 | */
|
---|
543 | static void vdiSetupImageDesc(PVDIIMAGEDESC pImage)
|
---|
544 | {
|
---|
545 | pImage->uImageFlags = getImageFlags(&pImage->Header);
|
---|
546 | pImage->uImageFlags |= vdiTranslateVDI2ImageFlags(getImageType(&pImage->Header));
|
---|
547 | pImage->offStartBlocks = getImageBlocksOffset(&pImage->Header);
|
---|
548 | pImage->offStartData = getImageDataOffset(&pImage->Header);
|
---|
549 | pImage->uBlockMask = getImageBlockSize(&pImage->Header) - 1;
|
---|
550 | pImage->uShiftOffset2Index = getPowerOfTwo(getImageBlockSize(&pImage->Header));
|
---|
551 | pImage->offStartBlockData = getImageExtraBlockSize(&pImage->Header);
|
---|
552 | pImage->cbAllocationBlock = getImageBlockSize(&pImage->Header);
|
---|
553 | pImage->cbTotalBlockData = pImage->offStartBlockData
|
---|
554 | + getImageBlockSize(&pImage->Header);
|
---|
555 | }
|
---|
556 |
|
---|
557 | /**
|
---|
558 | * Sets up the complete image state from the given parameters.
|
---|
559 | *
|
---|
560 | * @returns VBox status code.
|
---|
561 | * @param pImage The VDI image descriptor.
|
---|
562 | * @param uImageFlags Image flags.
|
---|
563 | * @param pszComment The comment for the image (optional).
|
---|
564 | * @param cbSize Size of the resulting image in bytes.
|
---|
565 | * @param cbAllocationBlock Size of blocks allocated
|
---|
566 | * @param cbDataAlign Data alignment in bytes.
|
---|
567 | * @param pPCHSGeometry Physical CHS geometry for the image.
|
---|
568 | * @param pLCHSGeometry Logical CHS geometry for the image.
|
---|
569 | */
|
---|
570 | static int vdiSetupImageState(PVDIIMAGEDESC pImage, unsigned uImageFlags, const char *pszComment,
|
---|
571 | uint64_t cbSize, uint32_t cbAllocationBlock, uint32_t cbDataAlign, PCVDGEOMETRY pPCHSGeometry,
|
---|
572 | PCVDGEOMETRY pLCHSGeometry)
|
---|
573 | {
|
---|
574 | int rc = VINF_SUCCESS;
|
---|
575 |
|
---|
576 | vdiInitPreHeader(&pImage->PreHeader);
|
---|
577 | vdiInitHeader(&pImage->Header, uImageFlags, pszComment, cbSize, cbAllocationBlock, 0,
|
---|
578 | cbDataAlign);
|
---|
579 | /* Save PCHS geometry. Not much work, and makes the flow of information
|
---|
580 | * quite a bit clearer - relying on the higher level isn't obvious. */
|
---|
581 | pImage->PCHSGeometry = *pPCHSGeometry;
|
---|
582 | /* Set LCHS geometry (legacy geometry is ignored for the current 1.1+). */
|
---|
583 | pImage->Header.u.v1plus.LCHSGeometry.cCylinders = pLCHSGeometry->cCylinders;
|
---|
584 | pImage->Header.u.v1plus.LCHSGeometry.cHeads = pLCHSGeometry->cHeads;
|
---|
585 | pImage->Header.u.v1plus.LCHSGeometry.cSectors = pLCHSGeometry->cSectors;
|
---|
586 | pImage->Header.u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
587 |
|
---|
588 | pImage->paBlocks = (PVDIIMAGEBLOCKPOINTER)RTMemAlloc(sizeof(VDIIMAGEBLOCKPOINTER) * getImageBlocks(&pImage->Header));
|
---|
589 | if (RT_LIKELY(pImage->paBlocks))
|
---|
590 | {
|
---|
591 | if (!(uImageFlags & VD_IMAGE_FLAGS_FIXED))
|
---|
592 | {
|
---|
593 | /* for growing images mark all blocks in paBlocks as free. */
|
---|
594 | for (unsigned i = 0; i < pImage->Header.u.v1.cBlocks; i++)
|
---|
595 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
596 | }
|
---|
597 | else
|
---|
598 | {
|
---|
599 | /* for fixed images mark all blocks in paBlocks as allocated */
|
---|
600 | for (unsigned i = 0; i < pImage->Header.u.v1.cBlocks; i++)
|
---|
601 | pImage->paBlocks[i] = i;
|
---|
602 | pImage->Header.u.v1.cBlocksAllocated = pImage->Header.u.v1.cBlocks;
|
---|
603 | }
|
---|
604 |
|
---|
605 | /* Setup image parameters. */
|
---|
606 | vdiSetupImageDesc(pImage);
|
---|
607 | }
|
---|
608 | else
|
---|
609 | rc = VERR_NO_MEMORY;
|
---|
610 |
|
---|
611 | return rc;
|
---|
612 | }
|
---|
613 |
|
---|
614 | /**
|
---|
615 | * Creates the image file from the given descriptor.
|
---|
616 | *
|
---|
617 | * @returns VBox status code.
|
---|
618 | * @param pImage The VDI image descriptor.
|
---|
619 | * @param uOpenFlags Open flags.
|
---|
620 | * @param pIfProgress The progress interface.
|
---|
621 | * @param uPercentStart Progress starting point.
|
---|
622 | * @param uPercentSpan How many percent for this part of the operation is used.
|
---|
623 | */
|
---|
624 | static int vdiImageCreateFile(PVDIIMAGEDESC pImage, unsigned uOpenFlags,
|
---|
625 | PVDINTERFACEPROGRESS pIfProgress, unsigned uPercentStart,
|
---|
626 | unsigned uPercentSpan)
|
---|
627 | {
|
---|
628 | int rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
|
---|
629 | VDOpenFlagsToFileOpenFlags(uOpenFlags & ~VD_OPEN_FLAGS_READONLY,
|
---|
630 | true /* fCreate */),
|
---|
631 | &pImage->pStorage);
|
---|
632 | if (RT_SUCCESS(rc))
|
---|
633 | {
|
---|
634 | if (pImage->uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
635 | {
|
---|
636 | uint64_t cbTotal = pImage->offStartData
|
---|
637 | + (uint64_t)getImageBlocks(&pImage->Header) * pImage->cbTotalBlockData;
|
---|
638 |
|
---|
639 | /* Check the free space on the disk and leave early if there is not
|
---|
640 | * sufficient space available. */
|
---|
641 | int64_t cbFree = 0;
|
---|
642 | rc = vdIfIoIntFileGetFreeSpace(pImage->pIfIo, pImage->pszFilename, &cbFree);
|
---|
643 | if (RT_SUCCESS(rc) /* ignore errors */ && ((uint64_t)cbFree < cbTotal))
|
---|
644 | rc = vdIfError(pImage->pIfError, VERR_DISK_FULL, RT_SRC_POS,
|
---|
645 | N_("VDI: disk would overflow creating image '%s'"), pImage->pszFilename);
|
---|
646 | else
|
---|
647 | {
|
---|
648 | /*
|
---|
649 | * Allocate & commit whole file if fixed image, it must be more
|
---|
650 | * effective than expanding file by write operations.
|
---|
651 | */
|
---|
652 | rc = vdIfIoIntFileSetAllocationSize(pImage->pIfIo, pImage->pStorage, cbTotal, 0 /* fFlags */,
|
---|
653 | pIfProgress, uPercentStart, uPercentSpan);
|
---|
654 | pImage->cbImage = cbTotal;
|
---|
655 | }
|
---|
656 | }
|
---|
657 | else
|
---|
658 | {
|
---|
659 | /* Set file size to hold header and blocks array. */
|
---|
660 | rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, pImage->offStartData);
|
---|
661 | pImage->cbImage = pImage->offStartData;
|
---|
662 | }
|
---|
663 | if (RT_SUCCESS(rc))
|
---|
664 | {
|
---|
665 | /* Write pre-header. */
|
---|
666 | VDIPREHEADER PreHeader;
|
---|
667 | vdiConvPreHeaderEndianess(VDIECONV_H2F, &PreHeader, &pImage->PreHeader);
|
---|
668 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, 0,
|
---|
669 | &PreHeader, sizeof(PreHeader));
|
---|
670 | if (RT_SUCCESS(rc))
|
---|
671 | {
|
---|
672 | /* Write header. */
|
---|
673 | VDIHEADER1PLUS Hdr;
|
---|
674 | vdiConvHeaderEndianessV1p(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1plus);
|
---|
675 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, sizeof(pImage->PreHeader),
|
---|
676 | &Hdr, sizeof(Hdr));
|
---|
677 | if (RT_SUCCESS(rc))
|
---|
678 | {
|
---|
679 | vdiConvBlocksEndianess(VDIECONV_H2F, pImage->paBlocks, getImageBlocks(&pImage->Header));
|
---|
680 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, pImage->offStartBlocks, pImage->paBlocks,
|
---|
681 | getImageBlocks(&pImage->Header) * sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
682 | vdiConvBlocksEndianess(VDIECONV_F2H, pImage->paBlocks, getImageBlocks(&pImage->Header));
|
---|
683 | if (RT_FAILURE(rc))
|
---|
684 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: writing block pointers failed for '%s'"),
|
---|
685 | pImage->pszFilename);
|
---|
686 | }
|
---|
687 | else
|
---|
688 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: writing header failed for '%s'"),
|
---|
689 | pImage->pszFilename);
|
---|
690 | }
|
---|
691 | else
|
---|
692 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: writing pre-header failed for '%s'"),
|
---|
693 | pImage->pszFilename);
|
---|
694 | }
|
---|
695 | else
|
---|
696 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: setting image size failed for '%s'"),
|
---|
697 | pImage->pszFilename);
|
---|
698 | }
|
---|
699 | else
|
---|
700 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: cannot create image '%s'"),
|
---|
701 | pImage->pszFilename);
|
---|
702 |
|
---|
703 | return rc;
|
---|
704 | }
|
---|
705 |
|
---|
706 | /**
|
---|
707 | * Internal: Create VDI image file.
|
---|
708 | */
|
---|
709 | static int vdiCreateImage(PVDIIMAGEDESC pImage, uint64_t cbSize,
|
---|
710 | unsigned uImageFlags, const char *pszComment,
|
---|
711 | PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
|
---|
712 | PCRTUUID pUuid, unsigned uOpenFlags,
|
---|
713 | PVDINTERFACEPROGRESS pIfProgress, unsigned uPercentStart,
|
---|
714 | unsigned uPercentSpan, PVDINTERFACECONFIG pIfCfg)
|
---|
715 | {
|
---|
716 | int rc = VINF_SUCCESS;
|
---|
717 | uint32_t cbDataAlign = VDI_DATA_ALIGN;
|
---|
718 | AssertPtr(pPCHSGeometry);
|
---|
719 | AssertPtr(pLCHSGeometry);
|
---|
720 |
|
---|
721 | pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
|
---|
722 | pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
|
---|
723 | AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
|
---|
724 |
|
---|
725 | /* Special check for comment length. */
|
---|
726 | if ( RT_VALID_PTR(pszComment)
|
---|
727 | && strlen(pszComment) >= VDI_IMAGE_COMMENT_SIZE)
|
---|
728 | rc = vdIfError(pImage->pIfError, VERR_VD_VDI_COMMENT_TOO_LONG, RT_SRC_POS,
|
---|
729 | N_("VDI: comment is too long for '%s'"), pImage->pszFilename);
|
---|
730 |
|
---|
731 | PVDINTERFACECONFIG pImgCfg = VDIfConfigGet(pImage->pVDIfsImage);
|
---|
732 | if (pImgCfg)
|
---|
733 | {
|
---|
734 | rc = VDCFGQueryU32Def(pImgCfg, "AllocationBlockSize",
|
---|
735 | &pImage->cbAllocationBlock, VDI_IMAGE_DEFAULT_BLOCK_SIZE);
|
---|
736 | if (RT_FAILURE(rc))
|
---|
737 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
738 | N_("VDI: Getting AllocationBlockSize for '%s' failed (%Rrc)"), pImage->pszFilename, rc);
|
---|
739 | } else
|
---|
740 | pImage->cbAllocationBlock = VDI_IMAGE_DEFAULT_BLOCK_SIZE;
|
---|
741 |
|
---|
742 | if (pIfCfg)
|
---|
743 | {
|
---|
744 | rc = VDCFGQueryU32Def(pIfCfg, "DataAlignment", &cbDataAlign, VDI_DATA_ALIGN);
|
---|
745 | if (RT_FAILURE(rc))
|
---|
746 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS,
|
---|
747 | N_("VDI: Getting data alignment for '%s' failed (%Rrc)"), pImage->pszFilename, rc);
|
---|
748 | }
|
---|
749 |
|
---|
750 | if (RT_SUCCESS(rc))
|
---|
751 | {
|
---|
752 |
|
---|
753 | rc = vdiSetupImageState(pImage, uImageFlags, pszComment, cbSize,
|
---|
754 | pImage->cbAllocationBlock, cbDataAlign, pPCHSGeometry, pLCHSGeometry);
|
---|
755 |
|
---|
756 | if (RT_SUCCESS(rc))
|
---|
757 | {
|
---|
758 | /* Use specified image uuid */
|
---|
759 | *getImageCreationUUID(&pImage->Header) = *pUuid;
|
---|
760 | /* Generate image last-modify uuid */
|
---|
761 | RTUuidCreate(getImageModificationUUID(&pImage->Header));
|
---|
762 |
|
---|
763 | rc = vdiImageCreateFile(pImage, uOpenFlags, pIfProgress,
|
---|
764 | uPercentStart, uPercentSpan);
|
---|
765 | }
|
---|
766 | }
|
---|
767 |
|
---|
768 | if (RT_SUCCESS(rc))
|
---|
769 | {
|
---|
770 | PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
|
---|
771 | pImage->RegionList.fFlags = 0;
|
---|
772 | pImage->RegionList.cRegions = 1;
|
---|
773 |
|
---|
774 | pRegion->offRegion = 0; /* Disk start. */
|
---|
775 | pRegion->cbBlock = 512;
|
---|
776 | pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
|
---|
777 | pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
|
---|
778 | pRegion->cbData = 512;
|
---|
779 | pRegion->cbMetadata = 0;
|
---|
780 | pRegion->cRegionBlocksOrBytes = getImageDiskSize(&pImage->Header);
|
---|
781 |
|
---|
782 | vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);
|
---|
783 | }
|
---|
784 |
|
---|
785 | if (RT_FAILURE(rc))
|
---|
786 | vdiFreeImage(pImage, rc != VERR_ALREADY_EXISTS);
|
---|
787 | return rc;
|
---|
788 | }
|
---|
789 |
|
---|
790 | /**
|
---|
791 | * Reads and validates the header for the given image descriptor.
|
---|
792 | *
|
---|
793 | * @returns VBox status code.
|
---|
794 | * @param pImage The VDI image descriptor.
|
---|
795 | */
|
---|
796 | static int vdiImageReadHeader(PVDIIMAGEDESC pImage)
|
---|
797 | {
|
---|
798 | /* Get file size. */
|
---|
799 | int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage,
|
---|
800 | &pImage->cbImage);
|
---|
801 | if (RT_SUCCESS(rc))
|
---|
802 | {
|
---|
803 | /* Read pre-header. */
|
---|
804 | VDIPREHEADER PreHeader;
|
---|
805 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, 0,
|
---|
806 | &PreHeader, sizeof(PreHeader));
|
---|
807 | if (RT_SUCCESS(rc))
|
---|
808 | {
|
---|
809 | vdiConvPreHeaderEndianess(VDIECONV_F2H, &pImage->PreHeader, &PreHeader);
|
---|
810 | rc = vdiValidatePreHeader(&pImage->PreHeader);
|
---|
811 | if (RT_SUCCESS(rc))
|
---|
812 | {
|
---|
813 | /* Read header. */
|
---|
814 | pImage->Header.uVersion = pImage->PreHeader.u32Version;
|
---|
815 | switch (GET_MAJOR_HEADER_VERSION(&pImage->Header))
|
---|
816 | {
|
---|
817 | case 0:
|
---|
818 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, sizeof(pImage->PreHeader),
|
---|
819 | &pImage->Header.u.v0, sizeof(pImage->Header.u.v0));
|
---|
820 | if (RT_SUCCESS(rc))
|
---|
821 | vdiConvHeaderEndianessV0(VDIECONV_F2H, &pImage->Header.u.v0, &pImage->Header.u.v0);
|
---|
822 | else
|
---|
823 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error reading v0 header in '%s'"), pImage->pszFilename);
|
---|
824 | break;
|
---|
825 | case 1:
|
---|
826 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, sizeof(pImage->PreHeader),
|
---|
827 | &pImage->Header.u.v1, sizeof(pImage->Header.u.v1));
|
---|
828 | if (RT_SUCCESS(rc))
|
---|
829 | {
|
---|
830 | vdiConvHeaderEndianessV1(VDIECONV_F2H, &pImage->Header.u.v1, &pImage->Header.u.v1);
|
---|
831 | /* Convert VDI 1.1 images to VDI 1.1+ on open in read/write mode.
|
---|
832 | * Conversion is harmless, as any VirtualBox version supporting VDI
|
---|
833 | * 1.1 doesn't touch fields it doesn't know about. */
|
---|
834 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
835 | && GET_MINOR_HEADER_VERSION(&pImage->Header) == 1
|
---|
836 | && pImage->Header.u.v1.cbHeader < sizeof(pImage->Header.u.v1plus))
|
---|
837 | {
|
---|
838 | pImage->Header.u.v1plus.cbHeader = sizeof(pImage->Header.u.v1plus);
|
---|
839 | /* Mark LCHS geometry not-calculated. */
|
---|
840 | pImage->Header.u.v1plus.LCHSGeometry.cCylinders = 0;
|
---|
841 | pImage->Header.u.v1plus.LCHSGeometry.cHeads = 0;
|
---|
842 | pImage->Header.u.v1plus.LCHSGeometry.cSectors = 0;
|
---|
843 | pImage->Header.u.v1plus.LCHSGeometry.cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
844 | }
|
---|
845 | else if (pImage->Header.u.v1.cbHeader >= sizeof(pImage->Header.u.v1plus))
|
---|
846 | {
|
---|
847 | /* Read the actual VDI 1.1+ header completely. */
|
---|
848 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, sizeof(pImage->PreHeader),
|
---|
849 | &pImage->Header.u.v1plus,
|
---|
850 | sizeof(pImage->Header.u.v1plus));
|
---|
851 | if (RT_SUCCESS(rc))
|
---|
852 | vdiConvHeaderEndianessV1p(VDIECONV_F2H, &pImage->Header.u.v1plus, &pImage->Header.u.v1plus);
|
---|
853 | else
|
---|
854 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error reading v1.1+ header in '%s'"), pImage->pszFilename);
|
---|
855 | }
|
---|
856 | }
|
---|
857 | else
|
---|
858 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error reading v1 header in '%s'"), pImage->pszFilename);
|
---|
859 | break;
|
---|
860 | default:
|
---|
861 | rc = vdIfError(pImage->pIfError, VERR_VD_VDI_UNSUPPORTED_VERSION, RT_SRC_POS,
|
---|
862 | N_("VDI: unsupported major version %u in '%s'"), GET_MAJOR_HEADER_VERSION(&pImage->Header), pImage->pszFilename);
|
---|
863 | }
|
---|
864 |
|
---|
865 | if (RT_SUCCESS(rc))
|
---|
866 | {
|
---|
867 | rc = vdiValidateHeader(&pImage->Header);
|
---|
868 | if (RT_SUCCESS(rc))
|
---|
869 | {
|
---|
870 | /* Setup image parameters by header. */
|
---|
871 | vdiSetupImageDesc(pImage);
|
---|
872 |
|
---|
873 | /*
|
---|
874 | * Until revision r111992 there was no check that the size was sector aligned
|
---|
875 | * when creating a new image and a bug in the VirtualBox GUI on OS X resulted
|
---|
876 | * in such images being created which caused issues when writing to the
|
---|
877 | * end of the image.
|
---|
878 | *
|
---|
879 | * Detect such images and repair the small damage by rounding down to the next
|
---|
880 | * aligned size. This is no problem as the guest would see a sector count
|
---|
881 | * only anyway from the device emulations so it already sees only the smaller
|
---|
882 | * size as result of the integer division of the size and sector size.
|
---|
883 | *
|
---|
884 | * This might not be written to the image if it is opened readonly
|
---|
885 | * which is not much of a problem because only writing to the last block
|
---|
886 | * causes trouble.
|
---|
887 | */
|
---|
888 | uint64_t cbDisk = getImageDiskSize(&pImage->Header);
|
---|
889 | if (cbDisk & 0x1ff)
|
---|
890 | setImageDiskSize(&pImage->Header, cbDisk & ~UINT64_C(0x1ff));
|
---|
891 | }
|
---|
892 | else
|
---|
893 | rc = vdIfError(pImage->pIfError, VERR_VD_VDI_INVALID_HEADER, RT_SRC_POS,
|
---|
894 | N_("VDI: invalid header in '%s'"), pImage->pszFilename);
|
---|
895 | }
|
---|
896 | }
|
---|
897 | else
|
---|
898 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: invalid pre-header in '%s'"), pImage->pszFilename);
|
---|
899 | }
|
---|
900 | else
|
---|
901 | {
|
---|
902 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error reading pre-header in '%s'"), pImage->pszFilename);
|
---|
903 | rc = VERR_VD_VDI_INVALID_HEADER;
|
---|
904 | }
|
---|
905 | }
|
---|
906 | else
|
---|
907 | {
|
---|
908 | vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: error getting the image size in '%s'"), pImage->pszFilename);
|
---|
909 | rc = VERR_VD_VDI_INVALID_HEADER;
|
---|
910 | }
|
---|
911 |
|
---|
912 | return rc;
|
---|
913 | }
|
---|
914 |
|
---|
915 | /**
|
---|
916 | * Creates the back resolving table for the image for the discard operation.
|
---|
917 | *
|
---|
918 | * @returns VBox status code.
|
---|
919 | * @param pImage The VDI image descriptor.
|
---|
920 | */
|
---|
921 | static int vdiImageBackResolvTblCreate(PVDIIMAGEDESC pImage)
|
---|
922 | {
|
---|
923 | int rc = VINF_SUCCESS;
|
---|
924 |
|
---|
925 | /*
|
---|
926 | * Any error or inconsistency results in a fail because this might
|
---|
927 | * get us into trouble later on.
|
---|
928 | */
|
---|
929 | pImage->paBlocksRev = (unsigned *)RTMemAllocZ(sizeof(unsigned) * getImageBlocks(&pImage->Header));
|
---|
930 | if (pImage->paBlocksRev)
|
---|
931 | {
|
---|
932 | unsigned cBlocksAllocated = getImageBlocksAllocated(&pImage->Header);
|
---|
933 | unsigned cBlocks = getImageBlocks(&pImage->Header);
|
---|
934 |
|
---|
935 | for (unsigned i = 0; i < cBlocks; i++)
|
---|
936 | pImage->paBlocksRev[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
937 |
|
---|
938 | for (unsigned i = 0; i < cBlocks; i++)
|
---|
939 | {
|
---|
940 | VDIIMAGEBLOCKPOINTER ptrBlock = pImage->paBlocks[i];
|
---|
941 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(ptrBlock))
|
---|
942 | {
|
---|
943 | if (ptrBlock < cBlocksAllocated)
|
---|
944 | {
|
---|
945 | if (pImage->paBlocksRev[ptrBlock] == VDI_IMAGE_BLOCK_FREE)
|
---|
946 | pImage->paBlocksRev[ptrBlock] = i;
|
---|
947 | else
|
---|
948 | {
|
---|
949 | rc = VERR_VD_VDI_INVALID_HEADER;
|
---|
950 | break;
|
---|
951 | }
|
---|
952 | }
|
---|
953 | else
|
---|
954 | {
|
---|
955 | rc = VERR_VD_VDI_INVALID_HEADER;
|
---|
956 | break;
|
---|
957 | }
|
---|
958 | }
|
---|
959 | }
|
---|
960 | }
|
---|
961 | else
|
---|
962 | rc = VERR_NO_MEMORY;
|
---|
963 |
|
---|
964 | return rc;
|
---|
965 | }
|
---|
966 |
|
---|
967 | /**
|
---|
968 | * Internal: Open a VDI image.
|
---|
969 | */
|
---|
970 | static int vdiOpenImage(PVDIIMAGEDESC pImage, unsigned uOpenFlags)
|
---|
971 | {
|
---|
972 | pImage->uOpenFlags = uOpenFlags;
|
---|
973 |
|
---|
974 | pImage->pIfError = VDIfErrorGet(pImage->pVDIfsDisk);
|
---|
975 | pImage->pIfIo = VDIfIoIntGet(pImage->pVDIfsImage);
|
---|
976 | AssertPtrReturn(pImage->pIfIo, VERR_INVALID_PARAMETER);
|
---|
977 |
|
---|
978 | /*
|
---|
979 | * Open the image.
|
---|
980 | */
|
---|
981 | int rc = vdIfIoIntFileOpen(pImage->pIfIo, pImage->pszFilename,
|
---|
982 | VDOpenFlagsToFileOpenFlags(uOpenFlags, false /* fCreate */),
|
---|
983 | &pImage->pStorage);
|
---|
984 | if (RT_SUCCESS(rc))
|
---|
985 | {
|
---|
986 | rc = vdiImageReadHeader(pImage);
|
---|
987 | if (RT_SUCCESS(rc))
|
---|
988 | {
|
---|
989 | /* Allocate memory for blocks array. */
|
---|
990 | pImage->paBlocks = (PVDIIMAGEBLOCKPOINTER)RTMemAlloc(sizeof(VDIIMAGEBLOCKPOINTER) * getImageBlocks(&pImage->Header));
|
---|
991 | if (RT_LIKELY(pImage->paBlocks))
|
---|
992 | {
|
---|
993 | /* Read blocks array. */
|
---|
994 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, pImage->offStartBlocks, pImage->paBlocks,
|
---|
995 | getImageBlocks(&pImage->Header) * sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
996 | if (RT_SUCCESS(rc))
|
---|
997 | {
|
---|
998 | vdiConvBlocksEndianess(VDIECONV_F2H, pImage->paBlocks, getImageBlocks(&pImage->Header));
|
---|
999 |
|
---|
1000 | if (uOpenFlags & VD_OPEN_FLAGS_DISCARD)
|
---|
1001 | rc = vdiImageBackResolvTblCreate(pImage);
|
---|
1002 | }
|
---|
1003 | else
|
---|
1004 | rc = vdIfError(pImage->pIfError, rc, RT_SRC_POS, N_("VDI: Error reading the block table in '%s'"), pImage->pszFilename);
|
---|
1005 | }
|
---|
1006 | else
|
---|
1007 | rc = vdIfError(pImage->pIfError, VERR_NO_MEMORY, RT_SRC_POS,
|
---|
1008 | N_("VDI: Error allocating memory for the block table in '%s'"), pImage->pszFilename);;
|
---|
1009 | }
|
---|
1010 | }
|
---|
1011 | /* else: Do NOT signal an appropriate error here, as the VD layer has the
|
---|
1012 | * choice of retrying the open if it failed. */
|
---|
1013 |
|
---|
1014 | if (RT_SUCCESS(rc))
|
---|
1015 | {
|
---|
1016 | PVDREGIONDESC pRegion = &pImage->RegionList.aRegions[0];
|
---|
1017 | pImage->RegionList.fFlags = 0;
|
---|
1018 | pImage->RegionList.cRegions = 1;
|
---|
1019 |
|
---|
1020 | pRegion->offRegion = 0; /* Disk start. */
|
---|
1021 | pRegion->cbBlock = 512;
|
---|
1022 | pRegion->enmDataForm = VDREGIONDATAFORM_RAW;
|
---|
1023 | pRegion->enmMetadataForm = VDREGIONMETADATAFORM_NONE;
|
---|
1024 | pRegion->cbData = 512;
|
---|
1025 | pRegion->cbMetadata = 0;
|
---|
1026 | pRegion->cRegionBlocksOrBytes = getImageDiskSize(&pImage->Header);
|
---|
1027 | if (uOpenFlags & VD_OPEN_FLAGS_INFO)
|
---|
1028 | {
|
---|
1029 | PVDINTERFACECONFIG pImgCfg = VDIfConfigGet(pImage->pVDIfsImage);
|
---|
1030 | if (pImgCfg)
|
---|
1031 | {
|
---|
1032 | rc = VDCFGUpdateU64(pImgCfg, true, "AllocationBlockSize", pImage->cbAllocationBlock);
|
---|
1033 | if (RT_FAILURE(rc))
|
---|
1034 | return rc;
|
---|
1035 | }
|
---|
1036 | }
|
---|
1037 | }
|
---|
1038 | else
|
---|
1039 | vdiFreeImage(pImage, false);
|
---|
1040 | return rc;
|
---|
1041 | }
|
---|
1042 |
|
---|
1043 | /**
|
---|
1044 | * Internal: Save header to file.
|
---|
1045 | */
|
---|
1046 | static int vdiUpdateHeader(PVDIIMAGEDESC pImage)
|
---|
1047 | {
|
---|
1048 | int rc;
|
---|
1049 | switch (GET_MAJOR_HEADER_VERSION(&pImage->Header))
|
---|
1050 | {
|
---|
1051 | case 0:
|
---|
1052 | {
|
---|
1053 | VDIHEADER0 Hdr;
|
---|
1054 | vdiConvHeaderEndianessV0(VDIECONV_H2F, &Hdr, &pImage->Header.u.v0);
|
---|
1055 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, sizeof(VDIPREHEADER),
|
---|
1056 | &Hdr, sizeof(Hdr));
|
---|
1057 | break;
|
---|
1058 | }
|
---|
1059 | case 1:
|
---|
1060 | if (pImage->Header.u.v1plus.cbHeader < sizeof(pImage->Header.u.v1plus))
|
---|
1061 | {
|
---|
1062 | VDIHEADER1 Hdr;
|
---|
1063 | vdiConvHeaderEndianessV1(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1);
|
---|
1064 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, sizeof(VDIPREHEADER),
|
---|
1065 | &Hdr, sizeof(Hdr));
|
---|
1066 | }
|
---|
1067 | else
|
---|
1068 | {
|
---|
1069 | VDIHEADER1PLUS Hdr;
|
---|
1070 | vdiConvHeaderEndianessV1p(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1plus);
|
---|
1071 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, sizeof(VDIPREHEADER),
|
---|
1072 | &Hdr, sizeof(Hdr));
|
---|
1073 | }
|
---|
1074 | break;
|
---|
1075 | default:
|
---|
1076 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
1077 | break;
|
---|
1078 | }
|
---|
1079 | AssertMsgRC(rc, ("vdiUpdateHeader failed, filename=\"%s\" rc=%Rrc\n", pImage->pszFilename, rc));
|
---|
1080 | return rc;
|
---|
1081 | }
|
---|
1082 |
|
---|
1083 | /**
|
---|
1084 | * Internal: Save header to file - async version.
|
---|
1085 | */
|
---|
1086 | static int vdiUpdateHeaderAsync(PVDIIMAGEDESC pImage, PVDIOCTX pIoCtx)
|
---|
1087 | {
|
---|
1088 | int rc;
|
---|
1089 | switch (GET_MAJOR_HEADER_VERSION(&pImage->Header))
|
---|
1090 | {
|
---|
1091 | case 0:
|
---|
1092 | {
|
---|
1093 | VDIHEADER0 Hdr;
|
---|
1094 | vdiConvHeaderEndianessV0(VDIECONV_H2F, &Hdr, &pImage->Header.u.v0);
|
---|
1095 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
1096 | sizeof(VDIPREHEADER), &Hdr, sizeof(Hdr),
|
---|
1097 | pIoCtx, NULL, NULL);
|
---|
1098 | break;
|
---|
1099 | }
|
---|
1100 | case 1:
|
---|
1101 | if (pImage->Header.u.v1plus.cbHeader < sizeof(pImage->Header.u.v1plus))
|
---|
1102 | {
|
---|
1103 | VDIHEADER1 Hdr;
|
---|
1104 | vdiConvHeaderEndianessV1(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1);
|
---|
1105 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
1106 | sizeof(VDIPREHEADER), &Hdr, sizeof(Hdr),
|
---|
1107 | pIoCtx, NULL, NULL);
|
---|
1108 | }
|
---|
1109 | else
|
---|
1110 | {
|
---|
1111 | VDIHEADER1PLUS Hdr;
|
---|
1112 | vdiConvHeaderEndianessV1p(VDIECONV_H2F, &Hdr, &pImage->Header.u.v1plus);
|
---|
1113 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
1114 | sizeof(VDIPREHEADER), &Hdr, sizeof(Hdr),
|
---|
1115 | pIoCtx, NULL, NULL);
|
---|
1116 | }
|
---|
1117 | break;
|
---|
1118 | default:
|
---|
1119 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
1120 | break;
|
---|
1121 | }
|
---|
1122 | AssertMsg(RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS,
|
---|
1123 | ("vdiUpdateHeader failed, filename=\"%s\" rc=%Rrc\n", pImage->pszFilename, rc));
|
---|
1124 | return rc;
|
---|
1125 | }
|
---|
1126 |
|
---|
1127 | /**
|
---|
1128 | * Internal: Save block pointer to file, save header to file.
|
---|
1129 | */
|
---|
1130 | static int vdiUpdateBlockInfo(PVDIIMAGEDESC pImage, unsigned uBlock)
|
---|
1131 | {
|
---|
1132 | /* Update image header. */
|
---|
1133 | int rc = vdiUpdateHeader(pImage);
|
---|
1134 | if (RT_SUCCESS(rc))
|
---|
1135 | {
|
---|
1136 | /* write only one block pointer. */
|
---|
1137 | VDIIMAGEBLOCKPOINTER ptrBlock = RT_H2LE_U32(pImage->paBlocks[uBlock]);
|
---|
1138 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
|
---|
1139 | pImage->offStartBlocks + uBlock * sizeof(VDIIMAGEBLOCKPOINTER),
|
---|
1140 | &ptrBlock, sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
1141 | AssertMsgRC(rc, ("vdiUpdateBlockInfo failed to update block=%u, filename=\"%s\", rc=%Rrc\n",
|
---|
1142 | uBlock, pImage->pszFilename, rc));
|
---|
1143 | }
|
---|
1144 | return rc;
|
---|
1145 | }
|
---|
1146 |
|
---|
1147 | /**
|
---|
1148 | * Internal: Save block pointer to file, save header to file - async version.
|
---|
1149 | */
|
---|
1150 | static int vdiUpdateBlockInfoAsync(PVDIIMAGEDESC pImage, unsigned uBlock,
|
---|
1151 | PVDIOCTX pIoCtx, bool fUpdateHdr)
|
---|
1152 | {
|
---|
1153 | int rc = VINF_SUCCESS;
|
---|
1154 |
|
---|
1155 | /* Update image header. */
|
---|
1156 | if (fUpdateHdr)
|
---|
1157 | rc = vdiUpdateHeaderAsync(pImage, pIoCtx);
|
---|
1158 |
|
---|
1159 | if (RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
1160 | {
|
---|
1161 | /* write only one block pointer. */
|
---|
1162 | VDIIMAGEBLOCKPOINTER ptrBlock = RT_H2LE_U32(pImage->paBlocks[uBlock]);
|
---|
1163 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
1164 | pImage->offStartBlocks + uBlock * sizeof(VDIIMAGEBLOCKPOINTER),
|
---|
1165 | &ptrBlock, sizeof(VDIIMAGEBLOCKPOINTER),
|
---|
1166 | pIoCtx, NULL, NULL);
|
---|
1167 | AssertMsg(RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS,
|
---|
1168 | ("vdiUpdateBlockInfo failed to update block=%u, filename=\"%s\", rc=%Rrc\n",
|
---|
1169 | uBlock, pImage->pszFilename, rc));
|
---|
1170 | }
|
---|
1171 | return rc;
|
---|
1172 | }
|
---|
1173 |
|
---|
1174 | /**
|
---|
1175 | * Internal: Flush the image file to disk - async version.
|
---|
1176 | */
|
---|
1177 | static int vdiFlushImageIoCtx(PVDIIMAGEDESC pImage, PVDIOCTX pIoCtx)
|
---|
1178 | {
|
---|
1179 | int rc = VINF_SUCCESS;
|
---|
1180 |
|
---|
1181 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
1182 | {
|
---|
1183 | /* Save header. */
|
---|
1184 | rc = vdiUpdateHeaderAsync(pImage, pIoCtx);
|
---|
1185 | AssertMsg(RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS,
|
---|
1186 | ("vdiUpdateHeaderAsync() failed, filename=\"%s\", rc=%Rrc\n",
|
---|
1187 | pImage->pszFilename, rc));
|
---|
1188 | rc = vdIfIoIntFileFlush(pImage->pIfIo, pImage->pStorage, pIoCtx, NULL, NULL);
|
---|
1189 | AssertMsg(RT_SUCCESS(rc) || rc == VERR_VD_ASYNC_IO_IN_PROGRESS,
|
---|
1190 | ("Flushing data to disk failed rc=%Rrc\n", rc));
|
---|
1191 | }
|
---|
1192 |
|
---|
1193 | return rc;
|
---|
1194 | }
|
---|
1195 |
|
---|
1196 | /**
|
---|
1197 | * Completion callback for meta/userdata reads or writes.
|
---|
1198 | *
|
---|
1199 | * @return VBox status code.
|
---|
1200 | * VINF_SUCCESS if everything was successful and the transfer can continue.
|
---|
1201 | * VERR_VD_ASYNC_IO_IN_PROGRESS if there is another data transfer pending.
|
---|
1202 | * @param pBackendData The opaque backend data.
|
---|
1203 | * @param pIoCtx I/O context associated with this request.
|
---|
1204 | * @param pvUser Opaque user data passed during a read/write request.
|
---|
1205 | * @param rcReq Status code for the completed request.
|
---|
1206 | */
|
---|
1207 | static DECLCALLBACK(int) vdiDiscardBlockAsyncUpdate(void *pBackendData, PVDIOCTX pIoCtx, void *pvUser, int rcReq)
|
---|
1208 | {
|
---|
1209 | RT_NOREF1(rcReq);
|
---|
1210 | int rc = VINF_SUCCESS;
|
---|
1211 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1212 | PVDIBLOCKDISCARDASYNC pDiscardAsync = (PVDIBLOCKDISCARDASYNC)pvUser;
|
---|
1213 |
|
---|
1214 | switch (pDiscardAsync->enmState)
|
---|
1215 | {
|
---|
1216 | case VDIBLOCKDISCARDSTATE_READ_BLOCK:
|
---|
1217 | {
|
---|
1218 | PVDMETAXFER pMetaXfer;
|
---|
1219 | uint64_t u64Offset = (uint64_t)pDiscardAsync->idxLastBlock * pImage->cbTotalBlockData + pImage->offStartData;
|
---|
1220 | rc = vdIfIoIntFileReadMeta(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
1221 | pDiscardAsync->pvBlock, pImage->cbTotalBlockData, pIoCtx,
|
---|
1222 | &pMetaXfer, vdiDiscardBlockAsyncUpdate, pDiscardAsync);
|
---|
1223 | if (RT_FAILURE(rc))
|
---|
1224 | break;
|
---|
1225 |
|
---|
1226 | /* Release immediately and go to next step. */
|
---|
1227 | vdIfIoIntMetaXferRelease(pImage->pIfIo, pMetaXfer);
|
---|
1228 | pDiscardAsync->enmState = VDIBLOCKDISCARDSTATE_WRITE_BLOCK;
|
---|
1229 | }
|
---|
1230 | RT_FALL_THRU();
|
---|
1231 | case VDIBLOCKDISCARDSTATE_WRITE_BLOCK:
|
---|
1232 | {
|
---|
1233 | /* Block read complete. Write to the new location (discarded block). */
|
---|
1234 | uint64_t u64Offset = (uint64_t)pDiscardAsync->ptrBlockDiscard * pImage->cbTotalBlockData + pImage->offStartData;
|
---|
1235 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
1236 | pDiscardAsync->pvBlock, pImage->cbTotalBlockData, pIoCtx,
|
---|
1237 | vdiDiscardBlockAsyncUpdate, pDiscardAsync);
|
---|
1238 |
|
---|
1239 | pDiscardAsync->enmState = VDIBLOCKDISCARDSTATE_UPDATE_METADATA;
|
---|
1240 | if (RT_FAILURE(rc))
|
---|
1241 | break;
|
---|
1242 | }
|
---|
1243 | RT_FALL_THRU();
|
---|
1244 | case VDIBLOCKDISCARDSTATE_UPDATE_METADATA:
|
---|
1245 | {
|
---|
1246 | int rc2;
|
---|
1247 |
|
---|
1248 | /* Block write complete. Update metadata. */
|
---|
1249 | pImage->paBlocksRev[pDiscardAsync->idxLastBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
1250 | pImage->paBlocks[pDiscardAsync->uBlock] = VDI_IMAGE_BLOCK_ZERO;
|
---|
1251 |
|
---|
1252 | if (pDiscardAsync->idxLastBlock != pDiscardAsync->ptrBlockDiscard)
|
---|
1253 | {
|
---|
1254 | pImage->paBlocks[pDiscardAsync->uBlockLast] = pDiscardAsync->ptrBlockDiscard;
|
---|
1255 | pImage->paBlocksRev[pDiscardAsync->ptrBlockDiscard] = pDiscardAsync->uBlockLast;
|
---|
1256 |
|
---|
1257 | rc = vdiUpdateBlockInfoAsync(pImage, pDiscardAsync->uBlockLast, pIoCtx, false /* fUpdateHdr */);
|
---|
1258 | if ( RT_FAILURE(rc)
|
---|
1259 | && rc != VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
1260 | break;
|
---|
1261 | }
|
---|
1262 |
|
---|
1263 | setImageBlocksAllocated(&pImage->Header, pDiscardAsync->idxLastBlock);
|
---|
1264 | rc = vdiUpdateBlockInfoAsync(pImage, pDiscardAsync->uBlock, pIoCtx, true /* fUpdateHdr */);
|
---|
1265 | if ( RT_FAILURE(rc)
|
---|
1266 | && rc != VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
1267 | break;
|
---|
1268 |
|
---|
1269 | pImage->cbImage -= pImage->cbTotalBlockData;
|
---|
1270 | LogFlowFunc(("Set new size %llu\n", pImage->cbImage));
|
---|
1271 | rc2 = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage, pImage->cbImage);
|
---|
1272 | if (RT_FAILURE(rc2))
|
---|
1273 | rc = rc2;
|
---|
1274 |
|
---|
1275 | /* Free discard state. */
|
---|
1276 | RTMemFree(pDiscardAsync->pvBlock);
|
---|
1277 | RTMemFree(pDiscardAsync);
|
---|
1278 | break;
|
---|
1279 | }
|
---|
1280 | default:
|
---|
1281 | AssertMsgFailed(("Invalid state %d\n", pDiscardAsync->enmState));
|
---|
1282 | }
|
---|
1283 |
|
---|
1284 | if (rc == VERR_VD_NOT_ENOUGH_METADATA)
|
---|
1285 | rc = VERR_VD_ASYNC_IO_IN_PROGRESS;
|
---|
1286 |
|
---|
1287 | return rc;
|
---|
1288 | }
|
---|
1289 |
|
---|
1290 | /**
|
---|
1291 | * Internal: Discard a whole block from the image filling the created hole with
|
---|
1292 | * data from another block - async I/O version.
|
---|
1293 | *
|
---|
1294 | * @returns VBox status code.
|
---|
1295 | * @param pImage VDI image instance data.
|
---|
1296 | * @param pIoCtx I/O context associated with this request.
|
---|
1297 | * @param uBlock The block to discard.
|
---|
1298 | * @param pvBlock Memory to use for the I/O.
|
---|
1299 | */
|
---|
1300 | static int vdiDiscardBlockAsync(PVDIIMAGEDESC pImage, PVDIOCTX pIoCtx,
|
---|
1301 | unsigned uBlock, void *pvBlock)
|
---|
1302 | {
|
---|
1303 | int rc = VINF_SUCCESS;
|
---|
1304 | PVDIBLOCKDISCARDASYNC pDiscardAsync = NULL;
|
---|
1305 |
|
---|
1306 | LogFlowFunc(("pImage=%#p uBlock=%u pvBlock=%#p\n",
|
---|
1307 | pImage, uBlock, pvBlock));
|
---|
1308 |
|
---|
1309 | pDiscardAsync = (PVDIBLOCKDISCARDASYNC)RTMemAllocZ(sizeof(VDIBLOCKDISCARDASYNC));
|
---|
1310 | if (RT_UNLIKELY(!pDiscardAsync))
|
---|
1311 | return VERR_NO_MEMORY;
|
---|
1312 |
|
---|
1313 | /* Init block discard state. */
|
---|
1314 | pDiscardAsync->uBlock = uBlock;
|
---|
1315 | pDiscardAsync->pvBlock = pvBlock;
|
---|
1316 | pDiscardAsync->ptrBlockDiscard = pImage->paBlocks[uBlock];
|
---|
1317 | pDiscardAsync->idxLastBlock = getImageBlocksAllocated(&pImage->Header) - 1;
|
---|
1318 | pDiscardAsync->uBlockLast = pImage->paBlocksRev[pDiscardAsync->idxLastBlock];
|
---|
1319 |
|
---|
1320 | /*
|
---|
1321 | * The block is empty, remove it.
|
---|
1322 | * Read the last block of the image first.
|
---|
1323 | */
|
---|
1324 | if (pDiscardAsync->idxLastBlock != pDiscardAsync->ptrBlockDiscard)
|
---|
1325 | {
|
---|
1326 | LogFlowFunc(("Moving block [%u]=%u into [%u]=%u\n",
|
---|
1327 | pDiscardAsync->uBlockLast, pDiscardAsync->idxLastBlock,
|
---|
1328 | uBlock, pImage->paBlocks[uBlock]));
|
---|
1329 | pDiscardAsync->enmState = VDIBLOCKDISCARDSTATE_READ_BLOCK;
|
---|
1330 | }
|
---|
1331 | else
|
---|
1332 | {
|
---|
1333 | pDiscardAsync->enmState = VDIBLOCKDISCARDSTATE_UPDATE_METADATA; /* Start immediately to shrink the image. */
|
---|
1334 | LogFlowFunc(("Discard last block [%u]=%u\n", uBlock, pImage->paBlocks[uBlock]));
|
---|
1335 | }
|
---|
1336 |
|
---|
1337 | /* Call the update callback directly. */
|
---|
1338 | rc = vdiDiscardBlockAsyncUpdate(pImage, pIoCtx, pDiscardAsync, VINF_SUCCESS);
|
---|
1339 |
|
---|
1340 | LogFlowFunc(("returns rc=%Rrc\n", rc));
|
---|
1341 | return rc;
|
---|
1342 | }
|
---|
1343 |
|
---|
1344 | /**
|
---|
1345 | * Internal: Creates a allocation bitmap from the given data.
|
---|
1346 | * Sectors which contain only 0 are marked as unallocated and sectors with
|
---|
1347 | * other data as allocated.
|
---|
1348 | *
|
---|
1349 | * @returns Pointer to the allocation bitmap or NULL on failure.
|
---|
1350 | * @param pvData The data to create the allocation bitmap for.
|
---|
1351 | * @param cbData Number of bytes in the buffer.
|
---|
1352 | */
|
---|
1353 | static void *vdiAllocationBitmapCreate(void *pvData, size_t cbData)
|
---|
1354 | {
|
---|
1355 | Assert(cbData <= UINT32_MAX / 8);
|
---|
1356 | uint32_t cSectors = (uint32_t)(cbData / 512);
|
---|
1357 | uint32_t uSectorCur = 0;
|
---|
1358 | void *pbmAllocationBitmap = NULL;
|
---|
1359 |
|
---|
1360 | Assert(!(cbData % 512));
|
---|
1361 | Assert(!(cSectors % 8));
|
---|
1362 |
|
---|
1363 | pbmAllocationBitmap = RTMemAllocZ(cSectors / 8);
|
---|
1364 | if (!pbmAllocationBitmap)
|
---|
1365 | return NULL;
|
---|
1366 |
|
---|
1367 | while (uSectorCur < cSectors)
|
---|
1368 | {
|
---|
1369 | int idxSet = ASMBitFirstSet((uint8_t *)pvData + uSectorCur * 512, (uint32_t)cbData * 8);
|
---|
1370 |
|
---|
1371 | if (idxSet != -1)
|
---|
1372 | {
|
---|
1373 | unsigned idxSectorAlloc = idxSet / 8 / 512;
|
---|
1374 | ASMBitSet(pbmAllocationBitmap, uSectorCur + idxSectorAlloc);
|
---|
1375 |
|
---|
1376 | uSectorCur += idxSectorAlloc + 1;
|
---|
1377 | cbData -= (idxSectorAlloc + 1) * 512;
|
---|
1378 | }
|
---|
1379 | else
|
---|
1380 | break;
|
---|
1381 | }
|
---|
1382 |
|
---|
1383 | return pbmAllocationBitmap;
|
---|
1384 | }
|
---|
1385 |
|
---|
1386 |
|
---|
1387 | /**
|
---|
1388 | * Updates the state of the async cluster allocation.
|
---|
1389 | *
|
---|
1390 | * @returns VBox status code.
|
---|
1391 | * @param pBackendData The opaque backend data.
|
---|
1392 | * @param pIoCtx I/O context associated with this request.
|
---|
1393 | * @param pvUser Opaque user data passed during a read/write request.
|
---|
1394 | * @param rcReq Status code for the completed request.
|
---|
1395 | */
|
---|
1396 | static DECLCALLBACK(int) vdiBlockAllocUpdate(void *pBackendData, PVDIOCTX pIoCtx, void *pvUser, int rcReq)
|
---|
1397 | {
|
---|
1398 | int rc = VINF_SUCCESS;
|
---|
1399 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1400 | PVDIASYNCBLOCKALLOC pBlockAlloc = (PVDIASYNCBLOCKALLOC)pvUser;
|
---|
1401 |
|
---|
1402 | if (RT_SUCCESS(rcReq))
|
---|
1403 | {
|
---|
1404 | pImage->cbImage += pImage->cbTotalBlockData;
|
---|
1405 | pImage->paBlocks[pBlockAlloc->uBlock] = pBlockAlloc->cBlocksAllocated;
|
---|
1406 |
|
---|
1407 | if (pImage->paBlocksRev)
|
---|
1408 | pImage->paBlocksRev[pBlockAlloc->cBlocksAllocated] = pBlockAlloc->uBlock;
|
---|
1409 |
|
---|
1410 | setImageBlocksAllocated(&pImage->Header, pBlockAlloc->cBlocksAllocated + 1);
|
---|
1411 | rc = vdiUpdateBlockInfoAsync(pImage, pBlockAlloc->uBlock, pIoCtx,
|
---|
1412 | true /* fUpdateHdr */);
|
---|
1413 | }
|
---|
1414 | /* else: I/O error don't update the block table. */
|
---|
1415 |
|
---|
1416 | RTMemFree(pBlockAlloc);
|
---|
1417 | return rc;
|
---|
1418 | }
|
---|
1419 |
|
---|
1420 | /** @copydoc VDIMAGEBACKEND::pfnProbe */
|
---|
1421 | static DECLCALLBACK(int) vdiProbe(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
|
---|
1422 | PVDINTERFACE pVDIfsImage, VDTYPE enmDesiredType, VDTYPE *penmType)
|
---|
1423 | {
|
---|
1424 | RT_NOREF(enmDesiredType);
|
---|
1425 | LogFlowFunc(("pszFilename=\"%s\"\n", pszFilename));
|
---|
1426 | int rc = VINF_SUCCESS;
|
---|
1427 |
|
---|
1428 | AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
|
---|
1429 | AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
|
---|
1430 |
|
---|
1431 |
|
---|
1432 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)RTMemAllocZ(RT_UOFFSETOF(VDIIMAGEDESC, RegionList.aRegions[1]));
|
---|
1433 | if (RT_LIKELY(pImage))
|
---|
1434 | {
|
---|
1435 | pImage->pszFilename = pszFilename;
|
---|
1436 | pImage->pStorage = NULL;
|
---|
1437 | pImage->paBlocks = NULL;
|
---|
1438 | pImage->pVDIfsDisk = pVDIfsDisk;
|
---|
1439 | pImage->pVDIfsImage = pVDIfsImage;
|
---|
1440 |
|
---|
1441 | rc = vdiOpenImage(pImage, VD_OPEN_FLAGS_INFO | VD_OPEN_FLAGS_READONLY);
|
---|
1442 | vdiFreeImage(pImage, false);
|
---|
1443 | RTMemFree(pImage);
|
---|
1444 |
|
---|
1445 | if (RT_SUCCESS(rc))
|
---|
1446 | *penmType = VDTYPE_HDD;
|
---|
1447 | }
|
---|
1448 | else
|
---|
1449 | rc = VERR_NO_MEMORY;
|
---|
1450 |
|
---|
1451 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1452 | return rc;
|
---|
1453 | }
|
---|
1454 |
|
---|
1455 | /** @copydoc VDIMAGEBACKEND::pfnOpen */
|
---|
1456 | static DECLCALLBACK(int) vdiOpen(const char *pszFilename, unsigned uOpenFlags,
|
---|
1457 | PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
|
---|
1458 | VDTYPE enmType, void **ppBackendData)
|
---|
1459 | {
|
---|
1460 | RT_NOREF1(enmType); /**< @todo r=klaus make use of the type info. */
|
---|
1461 |
|
---|
1462 | LogFlowFunc(("pszFilename=\"%s\" uOpenFlags=%#x pVDIfsDisk=%#p pVDIfsImage=%#p enmType=%u ppBackendData=%#p\n",
|
---|
1463 | pszFilename, uOpenFlags, pVDIfsDisk, pVDIfsImage, enmType, ppBackendData));
|
---|
1464 | int rc;
|
---|
1465 |
|
---|
1466 | /* Check open flags. All valid flags are supported. */
|
---|
1467 | AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
|
---|
1468 | AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
|
---|
1469 | AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
|
---|
1470 |
|
---|
1471 |
|
---|
1472 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)RTMemAllocZ(RT_UOFFSETOF(VDIIMAGEDESC, RegionList.aRegions[1]));
|
---|
1473 | if (RT_LIKELY(pImage))
|
---|
1474 | {
|
---|
1475 | pImage->pszFilename = pszFilename;
|
---|
1476 | pImage->pStorage = NULL;
|
---|
1477 | pImage->paBlocks = NULL;
|
---|
1478 | pImage->pVDIfsDisk = pVDIfsDisk;
|
---|
1479 | pImage->pVDIfsImage = pVDIfsImage;
|
---|
1480 |
|
---|
1481 | rc = vdiOpenImage(pImage, uOpenFlags);
|
---|
1482 | if (RT_SUCCESS(rc))
|
---|
1483 | *ppBackendData = pImage;
|
---|
1484 | else
|
---|
1485 | RTMemFree(pImage);
|
---|
1486 | }
|
---|
1487 | else
|
---|
1488 | rc = VERR_NO_MEMORY;
|
---|
1489 |
|
---|
1490 | LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
|
---|
1491 | return rc;
|
---|
1492 | }
|
---|
1493 |
|
---|
1494 | /** @copydoc VDIMAGEBACKEND::pfnCreate */
|
---|
1495 | static DECLCALLBACK(int) vdiCreate(const char *pszFilename, uint64_t cbSize,
|
---|
1496 | unsigned uImageFlags, const char *pszComment,
|
---|
1497 | PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
|
---|
1498 | PCRTUUID pUuid, unsigned uOpenFlags,
|
---|
1499 | unsigned uPercentStart, unsigned uPercentSpan,
|
---|
1500 | PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
|
---|
1501 | PVDINTERFACE pVDIfsOperation, VDTYPE enmType,
|
---|
1502 | void **ppBackendData)
|
---|
1503 | {
|
---|
1504 | 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",
|
---|
1505 | pszFilename, cbSize, uImageFlags, pszComment, pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags, uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation, enmType, ppBackendData));
|
---|
1506 | int rc;
|
---|
1507 |
|
---|
1508 | /* Check the VD container type and image flags. */
|
---|
1509 | if ( enmType != VDTYPE_HDD
|
---|
1510 | || (uImageFlags & ~VD_VDI_IMAGE_FLAGS_MASK) != 0)
|
---|
1511 | return VERR_VD_INVALID_TYPE;
|
---|
1512 |
|
---|
1513 | /* Check size. Maximum 4PB-3M. No tricks with adjusting the 1M block size
|
---|
1514 | * so far, which would extend the size. */
|
---|
1515 | if ( cbSize >= _1P * 4 - _1M * 3
|
---|
1516 | || cbSize < VDI_IMAGE_DEFAULT_BLOCK_SIZE
|
---|
1517 | || (cbSize % 512))
|
---|
1518 | return VERR_VD_INVALID_SIZE;
|
---|
1519 |
|
---|
1520 | /* Check open flags. All valid flags are supported. */
|
---|
1521 | AssertReturn(!(uOpenFlags & ~VD_OPEN_FLAGS_MASK), VERR_INVALID_PARAMETER);
|
---|
1522 | AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
|
---|
1523 | AssertReturn(*pszFilename != '\0', VERR_INVALID_PARAMETER);
|
---|
1524 | AssertPtrReturn(pPCHSGeometry, VERR_INVALID_POINTER);
|
---|
1525 | AssertPtrReturn(pLCHSGeometry, VERR_INVALID_POINTER);
|
---|
1526 |
|
---|
1527 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)RTMemAllocZ(RT_UOFFSETOF(VDIIMAGEDESC, RegionList.aRegions[1]));
|
---|
1528 | if (RT_LIKELY(pImage))
|
---|
1529 | {
|
---|
1530 | PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation);
|
---|
1531 | PVDINTERFACECONFIG pIfCfg = VDIfConfigGet(pVDIfsOperation);
|
---|
1532 | pImage->pszFilename = pszFilename;
|
---|
1533 | pImage->pStorage = NULL;
|
---|
1534 | pImage->paBlocks = NULL;
|
---|
1535 | pImage->pVDIfsDisk = pVDIfsDisk;
|
---|
1536 | pImage->pVDIfsImage = pVDIfsImage;
|
---|
1537 |
|
---|
1538 | rc = vdiCreateImage(pImage, cbSize, uImageFlags, pszComment,
|
---|
1539 | pPCHSGeometry, pLCHSGeometry, pUuid, uOpenFlags,
|
---|
1540 | pIfProgress, uPercentStart, uPercentSpan, pIfCfg);
|
---|
1541 | if (RT_SUCCESS(rc))
|
---|
1542 | {
|
---|
1543 | /* So far the image is opened in read/write mode. Make sure the
|
---|
1544 | * image is opened in read-only mode if the caller requested that. */
|
---|
1545 | if (uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
1546 | {
|
---|
1547 | vdiFreeImage(pImage, false);
|
---|
1548 | rc = vdiOpenImage(pImage, uOpenFlags);
|
---|
1549 | }
|
---|
1550 |
|
---|
1551 | if (RT_SUCCESS(rc))
|
---|
1552 | *ppBackendData = pImage;
|
---|
1553 | }
|
---|
1554 |
|
---|
1555 | if (RT_FAILURE(rc))
|
---|
1556 | RTMemFree(pImage);
|
---|
1557 | }
|
---|
1558 | else
|
---|
1559 | rc = VERR_NO_MEMORY;
|
---|
1560 |
|
---|
1561 | LogFlowFunc(("returns %Rrc (pBackendData=%#p)\n", rc, *ppBackendData));
|
---|
1562 | return rc;
|
---|
1563 | }
|
---|
1564 |
|
---|
1565 | /** @copydoc VDIMAGEBACKEND::pfnRename */
|
---|
1566 | static DECLCALLBACK(int) vdiRename(void *pBackendData, const char *pszFilename)
|
---|
1567 | {
|
---|
1568 | LogFlowFunc(("pBackendData=%#p pszFilename=%#p\n", pBackendData, pszFilename));
|
---|
1569 | int rc = VINF_SUCCESS;
|
---|
1570 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1571 |
|
---|
1572 | /* Check arguments. */
|
---|
1573 | AssertReturn((pImage && pszFilename && *pszFilename), VERR_INVALID_PARAMETER);
|
---|
1574 |
|
---|
1575 | /* Close the image. */
|
---|
1576 | rc = vdiFreeImage(pImage, false);
|
---|
1577 | if (RT_SUCCESS(rc))
|
---|
1578 | {
|
---|
1579 | /* Rename the file. */
|
---|
1580 | rc = vdIfIoIntFileMove(pImage->pIfIo, pImage->pszFilename, pszFilename, 0);
|
---|
1581 | if (RT_SUCCESS(rc))
|
---|
1582 | {
|
---|
1583 | /* Update pImage with the new information. */
|
---|
1584 | pImage->pszFilename = pszFilename;
|
---|
1585 |
|
---|
1586 | /* Open the new image. */
|
---|
1587 | rc = vdiOpenImage(pImage, pImage->uOpenFlags);
|
---|
1588 | }
|
---|
1589 | else
|
---|
1590 | {
|
---|
1591 | /* The move failed, try to reopen the original image. */
|
---|
1592 | int rc2 = vdiOpenImage(pImage, pImage->uOpenFlags);
|
---|
1593 | if (RT_FAILURE(rc2))
|
---|
1594 | rc = rc2;
|
---|
1595 | }
|
---|
1596 | }
|
---|
1597 |
|
---|
1598 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1599 | return rc;
|
---|
1600 | }
|
---|
1601 |
|
---|
1602 | /** @copydoc VDIMAGEBACKEND::pfnClose */
|
---|
1603 | static DECLCALLBACK(int) vdiClose(void *pBackendData, bool fDelete)
|
---|
1604 | {
|
---|
1605 | LogFlowFunc(("pBackendData=%#p fDelete=%d\n", pBackendData, fDelete));
|
---|
1606 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1607 |
|
---|
1608 | int rc = vdiFreeImage(pImage, fDelete);
|
---|
1609 | RTMemFree(pImage);
|
---|
1610 |
|
---|
1611 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1612 | return rc;
|
---|
1613 | }
|
---|
1614 |
|
---|
1615 | static DECLCALLBACK(int) vdiRead(void *pBackendData, uint64_t uOffset, size_t cbToRead,
|
---|
1616 | PVDIOCTX pIoCtx, size_t *pcbActuallyRead)
|
---|
1617 | {
|
---|
1618 | LogFlowFunc(("pBackendData=%#p uOffset=%llu pIoCtx=%#p cbToRead=%zu pcbActuallyRead=%#p\n",
|
---|
1619 | pBackendData, uOffset, pIoCtx, cbToRead, pcbActuallyRead));
|
---|
1620 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1621 | unsigned uBlock;
|
---|
1622 | unsigned offRead;
|
---|
1623 | int rc = VINF_SUCCESS;
|
---|
1624 |
|
---|
1625 | AssertPtr(pImage);
|
---|
1626 | Assert(!(uOffset % 512));
|
---|
1627 | Assert(!(cbToRead % 512));
|
---|
1628 | AssertPtrReturn(pIoCtx, VERR_INVALID_POINTER);
|
---|
1629 | AssertReturn(cbToRead, VERR_INVALID_PARAMETER);
|
---|
1630 | AssertReturn(uOffset + cbToRead <= getImageDiskSize(&pImage->Header), VERR_INVALID_PARAMETER);
|
---|
1631 |
|
---|
1632 | /* Calculate starting block number and offset inside it. */
|
---|
1633 | uBlock = (unsigned)(uOffset >> pImage->uShiftOffset2Index);
|
---|
1634 | offRead = (unsigned)uOffset & pImage->uBlockMask;
|
---|
1635 |
|
---|
1636 | /* Clip read range to at most the rest of the block. */
|
---|
1637 | size_t cbBlockRem = getImageBlockSize(&pImage->Header) - offRead;
|
---|
1638 | cbToRead = RT_MIN(cbToRead, cbBlockRem);
|
---|
1639 | Assert(!(cbToRead % 512));
|
---|
1640 |
|
---|
1641 | if (pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_FREE)
|
---|
1642 | rc = VERR_VD_BLOCK_FREE;
|
---|
1643 | else if (pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_ZERO)
|
---|
1644 | {
|
---|
1645 | size_t cbSet;
|
---|
1646 |
|
---|
1647 | cbSet = vdIfIoIntIoCtxSet(pImage->pIfIo, pIoCtx, 0, cbToRead);
|
---|
1648 | Assert(cbSet == cbToRead); RT_NOREF(cbSet);
|
---|
1649 | }
|
---|
1650 | else
|
---|
1651 | {
|
---|
1652 | /* Block present in image file, read relevant data. */
|
---|
1653 | uint64_t u64Offset = (uint64_t)pImage->paBlocks[uBlock] * pImage->cbTotalBlockData
|
---|
1654 | + (pImage->offStartData + pImage->offStartBlockData + offRead);
|
---|
1655 |
|
---|
1656 | if (u64Offset + cbToRead <= pImage->cbImage)
|
---|
1657 | rc = vdIfIoIntFileReadUser(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
1658 | pIoCtx, cbToRead);
|
---|
1659 | else
|
---|
1660 | {
|
---|
1661 | LogRel(("VDI: Out of range access (%llu) in image %s, image size %llu\n",
|
---|
1662 | u64Offset, pImage->pszFilename, pImage->cbImage));
|
---|
1663 | vdIfIoIntIoCtxSet(pImage->pIfIo, pIoCtx, 0, cbToRead);
|
---|
1664 | rc = VERR_VD_READ_OUT_OF_RANGE;
|
---|
1665 | }
|
---|
1666 | }
|
---|
1667 |
|
---|
1668 | if (pcbActuallyRead)
|
---|
1669 | *pcbActuallyRead = cbToRead;
|
---|
1670 |
|
---|
1671 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1672 | return rc;
|
---|
1673 | }
|
---|
1674 |
|
---|
1675 | static DECLCALLBACK(int) vdiWrite(void *pBackendData, uint64_t uOffset, size_t cbToWrite,
|
---|
1676 | PVDIOCTX pIoCtx, size_t *pcbWriteProcess, size_t *pcbPreRead,
|
---|
1677 | size_t *pcbPostRead, unsigned fWrite)
|
---|
1678 | {
|
---|
1679 | LogFlowFunc(("pBackendData=%#p uOffset=%llu pIoCtx=%#p cbToWrite=%zu pcbWriteProcess=%#p pcbPreRead=%#p pcbPostRead=%#p\n",
|
---|
1680 | pBackendData, uOffset, pIoCtx, cbToWrite, pcbWriteProcess, pcbPreRead, pcbPostRead));
|
---|
1681 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1682 | unsigned uBlock;
|
---|
1683 | unsigned offWrite;
|
---|
1684 | int rc = VINF_SUCCESS;
|
---|
1685 |
|
---|
1686 | AssertPtr(pImage);
|
---|
1687 | Assert(!(uOffset % 512));
|
---|
1688 | Assert(!(cbToWrite % 512));
|
---|
1689 | AssertPtrReturn(pIoCtx, VERR_INVALID_POINTER);
|
---|
1690 | AssertReturn(cbToWrite, VERR_INVALID_PARAMETER);
|
---|
1691 |
|
---|
1692 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
1693 | {
|
---|
1694 | /* No size check here, will do that later. For dynamic images which are
|
---|
1695 | * not multiples of the block size in length, this would prevent writing to
|
---|
1696 | * the last block. */
|
---|
1697 |
|
---|
1698 | /* Calculate starting block number and offset inside it. */
|
---|
1699 | uBlock = (unsigned)(uOffset >> pImage->uShiftOffset2Index);
|
---|
1700 | offWrite = (unsigned)uOffset & pImage->uBlockMask;
|
---|
1701 |
|
---|
1702 | /* Clip write range to at most the rest of the block. */
|
---|
1703 | size_t cbBlockRem = getImageBlockSize(&pImage->Header) - offWrite;
|
---|
1704 | cbToWrite = RT_MIN(cbToWrite, cbBlockRem);
|
---|
1705 | Assert(!(cbToWrite % 512));
|
---|
1706 |
|
---|
1707 | do
|
---|
1708 | {
|
---|
1709 | if (!IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[uBlock]))
|
---|
1710 | {
|
---|
1711 | /* Block is either free or zero. */
|
---|
1712 | if ( !(pImage->uOpenFlags & VD_OPEN_FLAGS_HONOR_ZEROES)
|
---|
1713 | && ( pImage->paBlocks[uBlock] == VDI_IMAGE_BLOCK_ZERO
|
---|
1714 | || cbToWrite == getImageBlockSize(&pImage->Header)))
|
---|
1715 | {
|
---|
1716 | /* If the destination block is unallocated at this point, it's
|
---|
1717 | * either a zero block or a block which hasn't been used so far
|
---|
1718 | * (which also means that it's a zero block. Don't need to write
|
---|
1719 | * anything to this block if the data consists of just zeroes. */
|
---|
1720 | if (vdIfIoIntIoCtxIsZero(pImage->pIfIo, pIoCtx, cbToWrite, true))
|
---|
1721 | {
|
---|
1722 | pImage->paBlocks[uBlock] = VDI_IMAGE_BLOCK_ZERO;
|
---|
1723 | *pcbPreRead = 0;
|
---|
1724 | *pcbPostRead = 0;
|
---|
1725 | break;
|
---|
1726 | }
|
---|
1727 | }
|
---|
1728 |
|
---|
1729 | if ( cbToWrite == getImageBlockSize(&pImage->Header)
|
---|
1730 | && !(fWrite & VD_WRITE_NO_ALLOC))
|
---|
1731 | {
|
---|
1732 | /* Full block write to previously unallocated block.
|
---|
1733 | * Allocate block and write data. */
|
---|
1734 | Assert(!offWrite);
|
---|
1735 | PVDIASYNCBLOCKALLOC pBlockAlloc = (PVDIASYNCBLOCKALLOC)RTMemAllocZ(sizeof(VDIASYNCBLOCKALLOC));
|
---|
1736 | if (!pBlockAlloc)
|
---|
1737 | {
|
---|
1738 | rc = VERR_NO_MEMORY;
|
---|
1739 | break;
|
---|
1740 | }
|
---|
1741 |
|
---|
1742 | unsigned cBlocksAllocated = getImageBlocksAllocated(&pImage->Header);
|
---|
1743 | uint64_t u64Offset = (uint64_t)cBlocksAllocated * pImage->cbTotalBlockData
|
---|
1744 | + (pImage->offStartData + pImage->offStartBlockData);
|
---|
1745 |
|
---|
1746 | pBlockAlloc->cBlocksAllocated = cBlocksAllocated;
|
---|
1747 | pBlockAlloc->uBlock = uBlock;
|
---|
1748 |
|
---|
1749 | *pcbPreRead = 0;
|
---|
1750 | *pcbPostRead = 0;
|
---|
1751 |
|
---|
1752 | rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage,
|
---|
1753 | u64Offset, pIoCtx, cbToWrite,
|
---|
1754 | vdiBlockAllocUpdate, pBlockAlloc);
|
---|
1755 | if (rc == VERR_VD_ASYNC_IO_IN_PROGRESS)
|
---|
1756 | break;
|
---|
1757 | else if (RT_FAILURE(rc))
|
---|
1758 | {
|
---|
1759 | RTMemFree(pBlockAlloc);
|
---|
1760 | break;
|
---|
1761 | }
|
---|
1762 |
|
---|
1763 | rc = vdiBlockAllocUpdate(pImage, pIoCtx, pBlockAlloc, rc);
|
---|
1764 | }
|
---|
1765 | else
|
---|
1766 | {
|
---|
1767 | /* Trying to do a partial write to an unallocated block. Don't do
|
---|
1768 | * anything except letting the upper layer know what to do. */
|
---|
1769 | *pcbPreRead = offWrite % getImageBlockSize(&pImage->Header);
|
---|
1770 | *pcbPostRead = getImageBlockSize(&pImage->Header) - cbToWrite - *pcbPreRead;
|
---|
1771 | rc = VERR_VD_BLOCK_FREE;
|
---|
1772 | }
|
---|
1773 | }
|
---|
1774 | else
|
---|
1775 | {
|
---|
1776 | /* Block present in image file, write relevant data. */
|
---|
1777 | uint64_t u64Offset = (uint64_t)pImage->paBlocks[uBlock] * pImage->cbTotalBlockData
|
---|
1778 | + (pImage->offStartData + pImage->offStartBlockData + offWrite);
|
---|
1779 | rc = vdIfIoIntFileWriteUser(pImage->pIfIo, pImage->pStorage,
|
---|
1780 | u64Offset, pIoCtx, cbToWrite, NULL, NULL);
|
---|
1781 | }
|
---|
1782 | } while (0);
|
---|
1783 |
|
---|
1784 | if (pcbWriteProcess)
|
---|
1785 | *pcbWriteProcess = cbToWrite;
|
---|
1786 | }
|
---|
1787 | else
|
---|
1788 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
1789 |
|
---|
1790 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1791 | return rc;
|
---|
1792 | }
|
---|
1793 |
|
---|
1794 | static DECLCALLBACK(int) vdiFlush(void *pBackendData, PVDIOCTX pIoCtx)
|
---|
1795 | {
|
---|
1796 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1797 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1798 | int rc = VINF_SUCCESS;
|
---|
1799 |
|
---|
1800 | Assert(pImage);
|
---|
1801 |
|
---|
1802 | rc = vdiFlushImageIoCtx(pImage, pIoCtx);
|
---|
1803 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1804 | return rc;
|
---|
1805 | }
|
---|
1806 |
|
---|
1807 | /** @copydoc VDIMAGEBACKEND::pfnGetVersion */
|
---|
1808 | static DECLCALLBACK(unsigned) vdiGetVersion(void *pBackendData)
|
---|
1809 | {
|
---|
1810 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1811 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1812 |
|
---|
1813 | AssertPtrReturn(pImage, 0);
|
---|
1814 |
|
---|
1815 | LogFlowFunc(("returns %#x\n", pImage->PreHeader.u32Version));
|
---|
1816 | return pImage->PreHeader.u32Version;
|
---|
1817 | }
|
---|
1818 |
|
---|
1819 | /** @copydoc VDIMAGEBACKEND::pfnGetFileSize */
|
---|
1820 | static DECLCALLBACK(uint64_t) vdiGetFileSize(void *pBackendData)
|
---|
1821 | {
|
---|
1822 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1823 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1824 | uint64_t cb = 0;
|
---|
1825 |
|
---|
1826 | AssertPtrReturn(pImage, 0);
|
---|
1827 |
|
---|
1828 | if (pImage->pStorage)
|
---|
1829 | {
|
---|
1830 | uint64_t cbFile;
|
---|
1831 | int rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
|
---|
1832 | if (RT_SUCCESS(rc))
|
---|
1833 | cb += cbFile;
|
---|
1834 | }
|
---|
1835 |
|
---|
1836 | LogFlowFunc(("returns %lld\n", cb));
|
---|
1837 | return cb;
|
---|
1838 | }
|
---|
1839 |
|
---|
1840 | /** @copydoc VDIMAGEBACKEND::pfnGetPCHSGeometry */
|
---|
1841 | static DECLCALLBACK(int) vdiGetPCHSGeometry(void *pBackendData, PVDGEOMETRY pPCHSGeometry)
|
---|
1842 | {
|
---|
1843 | LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p\n", pBackendData, pPCHSGeometry));
|
---|
1844 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1845 | int rc = VINF_SUCCESS;
|
---|
1846 |
|
---|
1847 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1848 |
|
---|
1849 | if (pImage->PCHSGeometry.cCylinders)
|
---|
1850 | *pPCHSGeometry = pImage->PCHSGeometry;
|
---|
1851 | else
|
---|
1852 | rc = VERR_VD_GEOMETRY_NOT_SET;
|
---|
1853 |
|
---|
1854 | LogFlowFunc(("returns %Rrc (PCHS=%u/%u/%u)\n", rc, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
|
---|
1855 | return rc;
|
---|
1856 | }
|
---|
1857 |
|
---|
1858 | /** @copydoc VDIMAGEBACKEND::pfnSetPCHSGeometry */
|
---|
1859 | static DECLCALLBACK(int) vdiSetPCHSGeometry(void *pBackendData, PCVDGEOMETRY pPCHSGeometry)
|
---|
1860 | {
|
---|
1861 | LogFlowFunc(("pBackendData=%#p pPCHSGeometry=%#p PCHS=%u/%u/%u\n",
|
---|
1862 | pBackendData, pPCHSGeometry, pPCHSGeometry->cCylinders, pPCHSGeometry->cHeads, pPCHSGeometry->cSectors));
|
---|
1863 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1864 | int rc = VINF_SUCCESS;
|
---|
1865 |
|
---|
1866 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1867 |
|
---|
1868 | if (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY)
|
---|
1869 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
1870 | else
|
---|
1871 | pImage->PCHSGeometry = *pPCHSGeometry;
|
---|
1872 |
|
---|
1873 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1874 | return rc;
|
---|
1875 | }
|
---|
1876 |
|
---|
1877 | /** @copydoc VDIMAGEBACKEND::pfnGetLCHSGeometry */
|
---|
1878 | static DECLCALLBACK(int) vdiGetLCHSGeometry(void *pBackendData, PVDGEOMETRY pLCHSGeometry)
|
---|
1879 | {
|
---|
1880 | LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p\n", pBackendData, pLCHSGeometry));
|
---|
1881 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1882 |
|
---|
1883 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1884 |
|
---|
1885 | int rc = VINF_SUCCESS;
|
---|
1886 | VDIDISKGEOMETRY DummyGeo = { 0, 0, 0, VDI_GEOMETRY_SECTOR_SIZE };
|
---|
1887 | PVDIDISKGEOMETRY pGeometry = getImageLCHSGeometry(&pImage->Header);
|
---|
1888 | if (!pGeometry)
|
---|
1889 | pGeometry = &DummyGeo;
|
---|
1890 |
|
---|
1891 | if ( pGeometry->cCylinders > 0
|
---|
1892 | && pGeometry->cHeads > 0
|
---|
1893 | && pGeometry->cSectors > 0)
|
---|
1894 | {
|
---|
1895 | pLCHSGeometry->cCylinders = pGeometry->cCylinders;
|
---|
1896 | pLCHSGeometry->cHeads = pGeometry->cHeads;
|
---|
1897 | pLCHSGeometry->cSectors = pGeometry->cSectors;
|
---|
1898 | }
|
---|
1899 | else
|
---|
1900 | rc = VERR_VD_GEOMETRY_NOT_SET;
|
---|
1901 |
|
---|
1902 | LogFlowFunc(("returns %Rrc (LCHS=%u/%u/%u)\n", rc, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
|
---|
1903 | return rc;
|
---|
1904 | }
|
---|
1905 |
|
---|
1906 | /** @copydoc VDIMAGEBACKEND::pfnSetLCHSGeometry */
|
---|
1907 | static DECLCALLBACK(int) vdiSetLCHSGeometry(void *pBackendData, PCVDGEOMETRY pLCHSGeometry)
|
---|
1908 | {
|
---|
1909 | LogFlowFunc(("pBackendData=%#p pLCHSGeometry=%#p LCHS=%u/%u/%u\n",
|
---|
1910 | pBackendData, pLCHSGeometry, pLCHSGeometry->cCylinders, pLCHSGeometry->cHeads, pLCHSGeometry->cSectors));
|
---|
1911 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1912 | PVDIDISKGEOMETRY pGeometry;
|
---|
1913 | int rc = VINF_SUCCESS;
|
---|
1914 |
|
---|
1915 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
1916 |
|
---|
1917 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
1918 | {
|
---|
1919 | pGeometry = getImageLCHSGeometry(&pImage->Header);
|
---|
1920 | if (pGeometry)
|
---|
1921 | {
|
---|
1922 | pGeometry->cCylinders = pLCHSGeometry->cCylinders;
|
---|
1923 | pGeometry->cHeads = pLCHSGeometry->cHeads;
|
---|
1924 | pGeometry->cSectors = pLCHSGeometry->cSectors;
|
---|
1925 | pGeometry->cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
1926 |
|
---|
1927 | /* Update header information in base image file. */
|
---|
1928 | vdiFlushImage(pImage);
|
---|
1929 | }
|
---|
1930 | }
|
---|
1931 | else
|
---|
1932 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
1933 |
|
---|
1934 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
1935 | return rc;
|
---|
1936 | }
|
---|
1937 |
|
---|
1938 | /** @copydoc VDIMAGEBACKEND::pfnQueryRegions */
|
---|
1939 | static DECLCALLBACK(int) vdiQueryRegions(void *pBackendData, PCVDREGIONLIST *ppRegionList)
|
---|
1940 | {
|
---|
1941 | LogFlowFunc(("pBackendData=%#p ppRegionList=%#p\n", pBackendData, ppRegionList));
|
---|
1942 | PVDIIMAGEDESC pThis = (PVDIIMAGEDESC)pBackendData;
|
---|
1943 |
|
---|
1944 | AssertPtrReturn(pThis, VERR_VD_NOT_OPENED);
|
---|
1945 |
|
---|
1946 | *ppRegionList = &pThis->RegionList;
|
---|
1947 | LogFlowFunc(("returns %Rrc\n", VINF_SUCCESS));
|
---|
1948 | return VINF_SUCCESS;
|
---|
1949 | }
|
---|
1950 |
|
---|
1951 | /** @copydoc VDIMAGEBACKEND::pfnRegionListRelease */
|
---|
1952 | static DECLCALLBACK(void) vdiRegionListRelease(void *pBackendData, PCVDREGIONLIST pRegionList)
|
---|
1953 | {
|
---|
1954 | RT_NOREF1(pRegionList);
|
---|
1955 | LogFlowFunc(("pBackendData=%#p pRegionList=%#p\n", pBackendData, pRegionList));
|
---|
1956 | PVDIIMAGEDESC pThis = (PVDIIMAGEDESC)pBackendData;
|
---|
1957 | AssertPtr(pThis); RT_NOREF(pThis);
|
---|
1958 |
|
---|
1959 | /* Nothing to do here. */
|
---|
1960 | }
|
---|
1961 |
|
---|
1962 | /** @copydoc VDIMAGEBACKEND::pfnGetImageFlags */
|
---|
1963 | static DECLCALLBACK(unsigned) vdiGetImageFlags(void *pBackendData)
|
---|
1964 | {
|
---|
1965 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1966 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1967 |
|
---|
1968 | AssertPtrReturn(pImage, 0);
|
---|
1969 |
|
---|
1970 | LogFlowFunc(("returns %#x\n", pImage->uImageFlags));
|
---|
1971 | return pImage->uImageFlags;
|
---|
1972 | }
|
---|
1973 |
|
---|
1974 | /** @copydoc VDIMAGEBACKEND::pfnGetOpenFlags */
|
---|
1975 | static DECLCALLBACK(unsigned) vdiGetOpenFlags(void *pBackendData)
|
---|
1976 | {
|
---|
1977 | LogFlowFunc(("pBackendData=%#p\n", pBackendData));
|
---|
1978 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1979 |
|
---|
1980 | AssertPtrReturn(pImage, 0);
|
---|
1981 |
|
---|
1982 | LogFlowFunc(("returns %#x\n", pImage->uOpenFlags));
|
---|
1983 | return pImage->uOpenFlags;
|
---|
1984 | }
|
---|
1985 |
|
---|
1986 | /** @copydoc VDIMAGEBACKEND::pfnSetOpenFlags */
|
---|
1987 | static DECLCALLBACK(int) vdiSetOpenFlags(void *pBackendData, unsigned uOpenFlags)
|
---|
1988 | {
|
---|
1989 | LogFlowFunc(("pBackendData=%#p uOpenFlags=%#x\n", pBackendData, uOpenFlags));
|
---|
1990 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
1991 | int rc;
|
---|
1992 |
|
---|
1993 | /* Image must be opened and the new flags must be valid. */
|
---|
1994 | if (!pImage || (uOpenFlags & ~( VD_OPEN_FLAGS_READONLY | VD_OPEN_FLAGS_INFO
|
---|
1995 | | VD_OPEN_FLAGS_ASYNC_IO | VD_OPEN_FLAGS_SHAREABLE
|
---|
1996 | | VD_OPEN_FLAGS_SEQUENTIAL | VD_OPEN_FLAGS_DISCARD
|
---|
1997 | | VD_OPEN_FLAGS_SKIP_CONSISTENCY_CHECKS)))
|
---|
1998 | rc = VERR_INVALID_PARAMETER;
|
---|
1999 | else
|
---|
2000 | {
|
---|
2001 | /* Implement this operation via reopening the image. */
|
---|
2002 | rc = vdiFreeImage(pImage, false);
|
---|
2003 | if (RT_SUCCESS(rc))
|
---|
2004 | rc = vdiOpenImage(pImage, uOpenFlags);
|
---|
2005 | }
|
---|
2006 |
|
---|
2007 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2008 | return rc;
|
---|
2009 | }
|
---|
2010 |
|
---|
2011 | /** @copydoc VDIMAGEBACKEND::pfnGetComment */
|
---|
2012 | static DECLCALLBACK(int) vdiGetComment(void *pBackendData, char *pszComment,
|
---|
2013 | size_t cbComment)
|
---|
2014 | {
|
---|
2015 | LogFlowFunc(("pBackendData=%#p pszComment=%#p cbComment=%zu\n", pBackendData, pszComment, cbComment));
|
---|
2016 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2017 |
|
---|
2018 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2019 |
|
---|
2020 | int rc = VINF_SUCCESS;
|
---|
2021 | char *pszTmp = getImageComment(&pImage->Header);
|
---|
2022 | /* Make this foolproof even if the image doesn't have the zero
|
---|
2023 | * termination. With some luck the repaired header will be saved. */
|
---|
2024 | size_t cb = RTStrNLen(pszTmp, VDI_IMAGE_COMMENT_SIZE);
|
---|
2025 | if (cb == VDI_IMAGE_COMMENT_SIZE)
|
---|
2026 | {
|
---|
2027 | pszTmp[VDI_IMAGE_COMMENT_SIZE-1] = '\0';
|
---|
2028 | cb--;
|
---|
2029 | }
|
---|
2030 | if (cb < cbComment)
|
---|
2031 | {
|
---|
2032 | /* memcpy is much better than strncpy. */
|
---|
2033 | memcpy(pszComment, pszTmp, cb + 1);
|
---|
2034 | }
|
---|
2035 | else
|
---|
2036 | rc = VERR_BUFFER_OVERFLOW;
|
---|
2037 |
|
---|
2038 | LogFlowFunc(("returns %Rrc comment=\"%s\"\n", rc, pszComment));
|
---|
2039 | return rc;
|
---|
2040 | }
|
---|
2041 |
|
---|
2042 | /** @copydoc VDIMAGEBACKEND::pfnSetComment */
|
---|
2043 | static DECLCALLBACK(int) vdiSetComment(void *pBackendData, const char *pszComment)
|
---|
2044 | {
|
---|
2045 | LogFlowFunc(("pBackendData=%#p pszComment=\"%s\"\n", pBackendData, pszComment));
|
---|
2046 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2047 | int rc;
|
---|
2048 |
|
---|
2049 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2050 |
|
---|
2051 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2052 | {
|
---|
2053 | size_t cchComment = pszComment ? strlen(pszComment) : 0;
|
---|
2054 | if (cchComment < VDI_IMAGE_COMMENT_SIZE)
|
---|
2055 | {
|
---|
2056 | /* we don't support old style images */
|
---|
2057 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2058 | {
|
---|
2059 | /*
|
---|
2060 | * Update the comment field, making sure to zero out all of the previous comment.
|
---|
2061 | */
|
---|
2062 | memset(pImage->Header.u.v1.szComment, '\0', VDI_IMAGE_COMMENT_SIZE);
|
---|
2063 | memcpy(pImage->Header.u.v1.szComment, pszComment, cchComment);
|
---|
2064 |
|
---|
2065 | /* write out new the header */
|
---|
2066 | rc = vdiUpdateHeader(pImage);
|
---|
2067 | }
|
---|
2068 | else
|
---|
2069 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2070 | }
|
---|
2071 | else
|
---|
2072 | {
|
---|
2073 | LogFunc(("pszComment is too long, %d bytes!\n", cchComment));
|
---|
2074 | rc = VERR_VD_VDI_COMMENT_TOO_LONG;
|
---|
2075 | }
|
---|
2076 | }
|
---|
2077 | else
|
---|
2078 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2079 |
|
---|
2080 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2081 | return rc;
|
---|
2082 | }
|
---|
2083 |
|
---|
2084 | /** @copydoc VDIMAGEBACKEND::pfnGetUuid */
|
---|
2085 | static DECLCALLBACK(int) vdiGetUuid(void *pBackendData, PRTUUID pUuid)
|
---|
2086 | {
|
---|
2087 | LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
|
---|
2088 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2089 |
|
---|
2090 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2091 |
|
---|
2092 | *pUuid = *getImageCreationUUID(&pImage->Header);
|
---|
2093 |
|
---|
2094 | LogFlowFunc(("returns %Rrc (%RTuuid)\n", VINF_SUCCESS, pUuid));
|
---|
2095 | return VINF_SUCCESS;
|
---|
2096 | }
|
---|
2097 |
|
---|
2098 | /** @copydoc VDIMAGEBACKEND::pfnSetUuid */
|
---|
2099 | static DECLCALLBACK(int) vdiSetUuid(void *pBackendData, PCRTUUID pUuid)
|
---|
2100 | {
|
---|
2101 | LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
|
---|
2102 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2103 |
|
---|
2104 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2105 |
|
---|
2106 | int rc = VINF_SUCCESS;
|
---|
2107 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2108 | {
|
---|
2109 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2110 | pImage->Header.u.v1.uuidCreate = *pUuid;
|
---|
2111 | /* Make it possible to clone old VDIs. */
|
---|
2112 | else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
|
---|
2113 | pImage->Header.u.v0.uuidCreate = *pUuid;
|
---|
2114 | else
|
---|
2115 | {
|
---|
2116 | LogFunc(("Version is not supported!\n"));
|
---|
2117 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2118 | }
|
---|
2119 | }
|
---|
2120 | else
|
---|
2121 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2122 |
|
---|
2123 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2124 | return rc;
|
---|
2125 | }
|
---|
2126 |
|
---|
2127 | /** @copydoc VDIMAGEBACKEND::pfnGetModificationUuid */
|
---|
2128 | static DECLCALLBACK(int) vdiGetModificationUuid(void *pBackendData, PRTUUID pUuid)
|
---|
2129 | {
|
---|
2130 | LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
|
---|
2131 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2132 |
|
---|
2133 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2134 |
|
---|
2135 | *pUuid = *getImageModificationUUID(&pImage->Header);
|
---|
2136 |
|
---|
2137 | LogFlowFunc(("returns %Rrc (%RTuuid)\n", VINF_SUCCESS, pUuid));
|
---|
2138 | return VINF_SUCCESS;
|
---|
2139 | }
|
---|
2140 |
|
---|
2141 | /** @copydoc VDIMAGEBACKEND::pfnSetModificationUuid */
|
---|
2142 | static DECLCALLBACK(int) vdiSetModificationUuid(void *pBackendData, PCRTUUID pUuid)
|
---|
2143 | {
|
---|
2144 | LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
|
---|
2145 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2146 |
|
---|
2147 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2148 |
|
---|
2149 | int rc = VINF_SUCCESS;
|
---|
2150 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2151 | {
|
---|
2152 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2153 | pImage->Header.u.v1.uuidModify = *pUuid;
|
---|
2154 | /* Make it possible to clone old VDIs. */
|
---|
2155 | else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
|
---|
2156 | pImage->Header.u.v0.uuidModify = *pUuid;
|
---|
2157 | else
|
---|
2158 | {
|
---|
2159 | LogFunc(("Version is not supported!\n"));
|
---|
2160 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2161 | }
|
---|
2162 | }
|
---|
2163 | else
|
---|
2164 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2165 |
|
---|
2166 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2167 | return rc;
|
---|
2168 | }
|
---|
2169 |
|
---|
2170 | /** @copydoc VDIMAGEBACKEND::pfnGetParentUuid */
|
---|
2171 | static DECLCALLBACK(int) vdiGetParentUuid(void *pBackendData, PRTUUID pUuid)
|
---|
2172 | {
|
---|
2173 | LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
|
---|
2174 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2175 |
|
---|
2176 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2177 |
|
---|
2178 | *pUuid = *getImageParentUUID(&pImage->Header);
|
---|
2179 |
|
---|
2180 | LogFlowFunc(("returns %Rrc (%RTuuid)\n", VINF_SUCCESS, pUuid));
|
---|
2181 | return VINF_SUCCESS;
|
---|
2182 | }
|
---|
2183 |
|
---|
2184 | /** @copydoc VDIMAGEBACKEND::pfnSetParentUuid */
|
---|
2185 | static DECLCALLBACK(int) vdiSetParentUuid(void *pBackendData, PCRTUUID pUuid)
|
---|
2186 | {
|
---|
2187 | LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
|
---|
2188 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2189 |
|
---|
2190 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2191 |
|
---|
2192 | int rc = VINF_SUCCESS;
|
---|
2193 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2194 | {
|
---|
2195 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2196 | pImage->Header.u.v1.uuidLinkage = *pUuid;
|
---|
2197 | /* Make it possible to clone old VDIs. */
|
---|
2198 | else if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0)
|
---|
2199 | pImage->Header.u.v0.uuidLinkage = *pUuid;
|
---|
2200 | else
|
---|
2201 | {
|
---|
2202 | LogFunc(("Version is not supported!\n"));
|
---|
2203 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2204 | }
|
---|
2205 | }
|
---|
2206 | else
|
---|
2207 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2208 |
|
---|
2209 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2210 | return rc;
|
---|
2211 | }
|
---|
2212 |
|
---|
2213 | /** @copydoc VDIMAGEBACKEND::pfnGetParentModificationUuid */
|
---|
2214 | static DECLCALLBACK(int) vdiGetParentModificationUuid(void *pBackendData, PRTUUID pUuid)
|
---|
2215 | {
|
---|
2216 | LogFlowFunc(("pBackendData=%#p pUuid=%#p\n", pBackendData, pUuid));
|
---|
2217 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2218 |
|
---|
2219 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2220 |
|
---|
2221 | *pUuid = *getImageParentModificationUUID(&pImage->Header);
|
---|
2222 |
|
---|
2223 | LogFlowFunc(("returns %Rrc (%RTuuid)\n", VINF_SUCCESS, pUuid));
|
---|
2224 | return VINF_SUCCESS;
|
---|
2225 | }
|
---|
2226 |
|
---|
2227 | /** @copydoc VDIMAGEBACKEND::pfnSetParentModificationUuid */
|
---|
2228 | static DECLCALLBACK(int) vdiSetParentModificationUuid(void *pBackendData, PCRTUUID pUuid)
|
---|
2229 | {
|
---|
2230 | LogFlowFunc(("pBackendData=%#p Uuid=%RTuuid\n", pBackendData, pUuid));
|
---|
2231 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2232 |
|
---|
2233 | AssertPtrReturn(pImage, VERR_VD_NOT_OPENED);
|
---|
2234 |
|
---|
2235 | int rc = VINF_SUCCESS;
|
---|
2236 | if (!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY))
|
---|
2237 | {
|
---|
2238 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) == 1)
|
---|
2239 | pImage->Header.u.v1.uuidParentModify = *pUuid;
|
---|
2240 | else
|
---|
2241 | {
|
---|
2242 | LogFunc(("Version is not supported!\n"));
|
---|
2243 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
2244 | }
|
---|
2245 | }
|
---|
2246 | else
|
---|
2247 | rc = VERR_VD_IMAGE_READ_ONLY;
|
---|
2248 |
|
---|
2249 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2250 | return rc;
|
---|
2251 | }
|
---|
2252 |
|
---|
2253 | /** @copydoc VDIMAGEBACKEND::pfnDump */
|
---|
2254 | static DECLCALLBACK(void) vdiDump(void *pBackendData)
|
---|
2255 | {
|
---|
2256 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2257 |
|
---|
2258 | AssertPtrReturnVoid(pImage);
|
---|
2259 | vdIfErrorMessage(pImage->pIfError, "Dumping VDI image \"%s\" mode=%s uOpenFlags=%X File=%#p\n",
|
---|
2260 | pImage->pszFilename,
|
---|
2261 | (pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY) ? "r/o" : "r/w",
|
---|
2262 | pImage->uOpenFlags,
|
---|
2263 | pImage->pStorage);
|
---|
2264 | vdIfErrorMessage(pImage->pIfError, "Header: Version=%08X Type=%X Flags=%X Size=%llu\n",
|
---|
2265 | pImage->PreHeader.u32Version,
|
---|
2266 | getImageType(&pImage->Header),
|
---|
2267 | getImageFlags(&pImage->Header),
|
---|
2268 | getImageDiskSize(&pImage->Header));
|
---|
2269 | vdIfErrorMessage(pImage->pIfError, "Header: cbBlock=%u cbBlockExtra=%u cBlocks=%u cBlocksAllocated=%u\n",
|
---|
2270 | getImageBlockSize(&pImage->Header),
|
---|
2271 | getImageExtraBlockSize(&pImage->Header),
|
---|
2272 | getImageBlocks(&pImage->Header),
|
---|
2273 | getImageBlocksAllocated(&pImage->Header));
|
---|
2274 | vdIfErrorMessage(pImage->pIfError, "Header: offBlocks=%u offData=%u\n",
|
---|
2275 | getImageBlocksOffset(&pImage->Header),
|
---|
2276 | getImageDataOffset(&pImage->Header));
|
---|
2277 | PVDIDISKGEOMETRY pg = getImageLCHSGeometry(&pImage->Header);
|
---|
2278 | if (pg)
|
---|
2279 | vdIfErrorMessage(pImage->pIfError, "Header: Geometry: C/H/S=%u/%u/%u cbSector=%u\n",
|
---|
2280 | pg->cCylinders, pg->cHeads, pg->cSectors, pg->cbSector);
|
---|
2281 | vdIfErrorMessage(pImage->pIfError, "Header: uuidCreation={%RTuuid}\n", getImageCreationUUID(&pImage->Header));
|
---|
2282 | vdIfErrorMessage(pImage->pIfError, "Header: uuidModification={%RTuuid}\n", getImageModificationUUID(&pImage->Header));
|
---|
2283 | vdIfErrorMessage(pImage->pIfError, "Header: uuidParent={%RTuuid}\n", getImageParentUUID(&pImage->Header));
|
---|
2284 | if (GET_MAJOR_HEADER_VERSION(&pImage->Header) >= 1)
|
---|
2285 | vdIfErrorMessage(pImage->pIfError, "Header: uuidParentModification={%RTuuid}\n", getImageParentModificationUUID(&pImage->Header));
|
---|
2286 | vdIfErrorMessage(pImage->pIfError, "Image: fFlags=%08X offStartBlocks=%u offStartData=%u\n",
|
---|
2287 | pImage->uImageFlags, pImage->offStartBlocks, pImage->offStartData);
|
---|
2288 | vdIfErrorMessage(pImage->pIfError, "Image: uBlockMask=%08X cbTotalBlockData=%u uShiftOffset2Index=%u offStartBlockData=%u\n",
|
---|
2289 | pImage->uBlockMask,
|
---|
2290 | pImage->cbTotalBlockData,
|
---|
2291 | pImage->uShiftOffset2Index,
|
---|
2292 | pImage->offStartBlockData);
|
---|
2293 |
|
---|
2294 | unsigned uBlock, cBlocksNotFree, cBadBlocks, cBlocks = getImageBlocks(&pImage->Header);
|
---|
2295 | for (uBlock=0, cBlocksNotFree=0, cBadBlocks=0; uBlock<cBlocks; uBlock++)
|
---|
2296 | {
|
---|
2297 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[uBlock]))
|
---|
2298 | {
|
---|
2299 | cBlocksNotFree++;
|
---|
2300 | if (pImage->paBlocks[uBlock] >= cBlocks)
|
---|
2301 | cBadBlocks++;
|
---|
2302 | }
|
---|
2303 | }
|
---|
2304 | if (cBlocksNotFree != getImageBlocksAllocated(&pImage->Header))
|
---|
2305 | {
|
---|
2306 | vdIfErrorMessage(pImage->pIfError, "!! WARNING: %u blocks actually allocated (cBlocksAllocated=%u) !!\n",
|
---|
2307 | cBlocksNotFree, getImageBlocksAllocated(&pImage->Header));
|
---|
2308 | }
|
---|
2309 | if (cBadBlocks)
|
---|
2310 | {
|
---|
2311 | vdIfErrorMessage(pImage->pIfError, "!! WARNING: %u bad blocks found !!\n",
|
---|
2312 | cBadBlocks);
|
---|
2313 | }
|
---|
2314 | }
|
---|
2315 |
|
---|
2316 | /** @copydoc VDIMAGEBACKEND::pfnCompact */
|
---|
2317 | static DECLCALLBACK(int) vdiCompact(void *pBackendData, unsigned uPercentStart,
|
---|
2318 | unsigned uPercentSpan, PVDINTERFACE pVDIfsDisk,
|
---|
2319 | PVDINTERFACE pVDIfsImage, PVDINTERFACE pVDIfsOperation)
|
---|
2320 | {
|
---|
2321 | RT_NOREF2(pVDIfsDisk, pVDIfsImage);
|
---|
2322 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2323 | int rc = VINF_SUCCESS;
|
---|
2324 | void *pvBuf = NULL, *pvTmp = NULL;
|
---|
2325 | unsigned *paBlocks2 = NULL;
|
---|
2326 |
|
---|
2327 | PFNVDPARENTREAD pfnParentRead = NULL;
|
---|
2328 | void *pvParent = NULL;
|
---|
2329 | PVDINTERFACEPARENTSTATE pIfParentState = VDIfParentStateGet(pVDIfsOperation);
|
---|
2330 | if (pIfParentState)
|
---|
2331 | {
|
---|
2332 | pfnParentRead = pIfParentState->pfnParentRead;
|
---|
2333 | pvParent = pIfParentState->Core.pvUser;
|
---|
2334 | }
|
---|
2335 |
|
---|
2336 | PVDINTERFACEPROGRESS pIfProgress = VDIfProgressGet(pVDIfsOperation);
|
---|
2337 | PVDINTERFACEQUERYRANGEUSE pIfQueryRangeUse = VDIfQueryRangeUseGet(pVDIfsOperation);
|
---|
2338 |
|
---|
2339 | do
|
---|
2340 | {
|
---|
2341 | AssertBreakStmt(pImage, rc = VERR_INVALID_PARAMETER);
|
---|
2342 |
|
---|
2343 | AssertBreakStmt(!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY),
|
---|
2344 | rc = VERR_VD_IMAGE_READ_ONLY);
|
---|
2345 |
|
---|
2346 | unsigned cBlocks;
|
---|
2347 | unsigned cBlocksToMove = 0;
|
---|
2348 | size_t cbBlock;
|
---|
2349 | cBlocks = getImageBlocks(&pImage->Header);
|
---|
2350 | cbBlock = getImageBlockSize(&pImage->Header);
|
---|
2351 | if (pfnParentRead)
|
---|
2352 | {
|
---|
2353 | pvBuf = RTMemTmpAlloc(cbBlock);
|
---|
2354 | AssertBreakStmt(pvBuf, rc = VERR_NO_MEMORY);
|
---|
2355 | }
|
---|
2356 | pvTmp = RTMemTmpAlloc(cbBlock);
|
---|
2357 | AssertBreakStmt(pvTmp, rc = VERR_NO_MEMORY);
|
---|
2358 |
|
---|
2359 | uint64_t cbFile;
|
---|
2360 | rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &cbFile);
|
---|
2361 | AssertRCBreak(rc);
|
---|
2362 | unsigned cBlocksAllocated = (unsigned)((cbFile - pImage->offStartData - pImage->offStartBlockData) >> pImage->uShiftOffset2Index);
|
---|
2363 | if (cBlocksAllocated == 0)
|
---|
2364 | {
|
---|
2365 | /* No data blocks in this image, no need to compact. */
|
---|
2366 | rc = VINF_SUCCESS;
|
---|
2367 | break;
|
---|
2368 | }
|
---|
2369 |
|
---|
2370 | /* Allocate block array for back resolving. */
|
---|
2371 | paBlocks2 = (unsigned *)RTMemAlloc(sizeof(unsigned *) * cBlocksAllocated);
|
---|
2372 | AssertBreakStmt(paBlocks2, rc = VERR_NO_MEMORY);
|
---|
2373 | /* Fill out back resolving, check/fix allocation errors before
|
---|
2374 | * compacting the image, just to be on the safe side. Update the
|
---|
2375 | * image contents straight away, as this enables cancelling. */
|
---|
2376 | for (unsigned i = 0; i < cBlocksAllocated; i++)
|
---|
2377 | paBlocks2[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
2378 | rc = VINF_SUCCESS;
|
---|
2379 | for (unsigned i = 0; i < cBlocks; i++)
|
---|
2380 | {
|
---|
2381 | VDIIMAGEBLOCKPOINTER ptrBlock = pImage->paBlocks[i];
|
---|
2382 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(ptrBlock))
|
---|
2383 | {
|
---|
2384 | if (ptrBlock < cBlocksAllocated)
|
---|
2385 | {
|
---|
2386 | if (paBlocks2[ptrBlock] == VDI_IMAGE_BLOCK_FREE)
|
---|
2387 | paBlocks2[ptrBlock] = i;
|
---|
2388 | else
|
---|
2389 | {
|
---|
2390 | LogFunc(("Freed cross-linked block %u in file \"%s\"\n",
|
---|
2391 | i, pImage->pszFilename));
|
---|
2392 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
2393 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2394 | if (RT_FAILURE(rc))
|
---|
2395 | break;
|
---|
2396 | }
|
---|
2397 | }
|
---|
2398 | else
|
---|
2399 | {
|
---|
2400 | LogFunc(("Freed out of bounds reference for block %u in file \"%s\"\n",
|
---|
2401 | i, pImage->pszFilename));
|
---|
2402 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
2403 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2404 | if (RT_FAILURE(rc))
|
---|
2405 | break;
|
---|
2406 | }
|
---|
2407 | }
|
---|
2408 | }
|
---|
2409 | if (RT_FAILURE(rc))
|
---|
2410 | break;
|
---|
2411 |
|
---|
2412 | /* Find redundant information and update the block pointers
|
---|
2413 | * accordingly, creating bubbles. Keep disk up to date, as this
|
---|
2414 | * enables cancelling. */
|
---|
2415 | for (unsigned i = 0; i < cBlocks; i++)
|
---|
2416 | {
|
---|
2417 | VDIIMAGEBLOCKPOINTER ptrBlock = pImage->paBlocks[i];
|
---|
2418 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(ptrBlock))
|
---|
2419 | {
|
---|
2420 | /* Block present in image file, read relevant data. */
|
---|
2421 | uint64_t u64Offset = (uint64_t)ptrBlock * pImage->cbTotalBlockData
|
---|
2422 | + (pImage->offStartData + pImage->offStartBlockData);
|
---|
2423 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, u64Offset, pvTmp, cbBlock);
|
---|
2424 | if (RT_FAILURE(rc))
|
---|
2425 | break;
|
---|
2426 |
|
---|
2427 | if (ASMBitFirstSet((volatile void *)pvTmp, (uint32_t)cbBlock * 8) == -1)
|
---|
2428 | {
|
---|
2429 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_ZERO;
|
---|
2430 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2431 | if (RT_FAILURE(rc))
|
---|
2432 | break;
|
---|
2433 | paBlocks2[ptrBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
2434 | /* Adjust progress info, one block to be relocated. */
|
---|
2435 | cBlocksToMove++;
|
---|
2436 | }
|
---|
2437 | else if (pfnParentRead)
|
---|
2438 | {
|
---|
2439 | rc = pfnParentRead(pvParent, (uint64_t)i * cbBlock, pvBuf, cbBlock);
|
---|
2440 | if (RT_FAILURE(rc))
|
---|
2441 | break;
|
---|
2442 | if (!memcmp(pvTmp, pvBuf, cbBlock))
|
---|
2443 | {
|
---|
2444 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
2445 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2446 | if (RT_FAILURE(rc))
|
---|
2447 | break;
|
---|
2448 | paBlocks2[ptrBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
2449 | /* Adjust progress info, one block to be relocated. */
|
---|
2450 | cBlocksToMove++;
|
---|
2451 | }
|
---|
2452 | }
|
---|
2453 | }
|
---|
2454 |
|
---|
2455 | /* Check if the range is in use if the block is still allocated. */
|
---|
2456 | ptrBlock = pImage->paBlocks[i];
|
---|
2457 | if ( IS_VDI_IMAGE_BLOCK_ALLOCATED(ptrBlock)
|
---|
2458 | && pIfQueryRangeUse)
|
---|
2459 | {
|
---|
2460 | bool fUsed = true;
|
---|
2461 |
|
---|
2462 | rc = vdIfQueryRangeUse(pIfQueryRangeUse, (uint64_t)i * cbBlock, cbBlock, &fUsed);
|
---|
2463 | if (RT_FAILURE(rc))
|
---|
2464 | break;
|
---|
2465 | if (!fUsed)
|
---|
2466 | {
|
---|
2467 | pImage->paBlocks[i] = VDI_IMAGE_BLOCK_ZERO;
|
---|
2468 | rc = vdiUpdateBlockInfo(pImage, i);
|
---|
2469 | if (RT_FAILURE(rc))
|
---|
2470 | break;
|
---|
2471 | paBlocks2[ptrBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
2472 | /* Adjust progress info, one block to be relocated. */
|
---|
2473 | cBlocksToMove++;
|
---|
2474 | }
|
---|
2475 | }
|
---|
2476 |
|
---|
2477 | vdIfProgress(pIfProgress, (uint64_t)i * uPercentSpan / (cBlocks + cBlocksToMove) + uPercentStart);
|
---|
2478 | if (RT_FAILURE(rc))
|
---|
2479 | break;
|
---|
2480 | }
|
---|
2481 | if (RT_FAILURE(rc))
|
---|
2482 | break;
|
---|
2483 |
|
---|
2484 | /* Fill bubbles with other data (if available). */
|
---|
2485 | unsigned cBlocksMoved = 0;
|
---|
2486 | unsigned uBlockUsedPos = cBlocksAllocated;
|
---|
2487 | for (unsigned i = 0; i < cBlocksAllocated; i++)
|
---|
2488 | {
|
---|
2489 | unsigned uBlock = paBlocks2[i];
|
---|
2490 | if (uBlock == VDI_IMAGE_BLOCK_FREE)
|
---|
2491 | {
|
---|
2492 | unsigned uBlockData = VDI_IMAGE_BLOCK_FREE;
|
---|
2493 | while (uBlockUsedPos > i && uBlockData == VDI_IMAGE_BLOCK_FREE)
|
---|
2494 | {
|
---|
2495 | uBlockUsedPos--;
|
---|
2496 | uBlockData = paBlocks2[uBlockUsedPos];
|
---|
2497 | }
|
---|
2498 | /* Terminate early if there is no block which needs copying. */
|
---|
2499 | if (uBlockUsedPos == i)
|
---|
2500 | break;
|
---|
2501 | uint64_t u64Offset = (uint64_t)uBlockUsedPos * pImage->cbTotalBlockData
|
---|
2502 | + (pImage->offStartData + pImage->offStartBlockData);
|
---|
2503 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
2504 | pvTmp, cbBlock);
|
---|
2505 | if (RT_FAILURE(rc))
|
---|
2506 | break;
|
---|
2507 |
|
---|
2508 | u64Offset = (uint64_t)i * pImage->cbTotalBlockData
|
---|
2509 | + (pImage->offStartData + pImage->offStartBlockData);
|
---|
2510 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
2511 | pvTmp, cbBlock);
|
---|
2512 | if (RT_FAILURE(rc))
|
---|
2513 | break;
|
---|
2514 |
|
---|
2515 | pImage->paBlocks[uBlockData] = i;
|
---|
2516 | setImageBlocksAllocated(&pImage->Header, cBlocksAllocated - cBlocksMoved);
|
---|
2517 | rc = vdiUpdateBlockInfo(pImage, uBlockData);
|
---|
2518 | if (RT_FAILURE(rc))
|
---|
2519 | break;
|
---|
2520 | paBlocks2[i] = uBlockData;
|
---|
2521 | paBlocks2[uBlockUsedPos] = VDI_IMAGE_BLOCK_FREE;
|
---|
2522 | cBlocksMoved++;
|
---|
2523 | }
|
---|
2524 |
|
---|
2525 | rc = vdIfProgress(pIfProgress, (uint64_t)(cBlocks + cBlocksMoved) * uPercentSpan / (cBlocks + cBlocksToMove) + uPercentStart);
|
---|
2526 | if (RT_FAILURE(rc))
|
---|
2527 | break;
|
---|
2528 | }
|
---|
2529 | if (RT_FAILURE(rc))
|
---|
2530 | break;
|
---|
2531 |
|
---|
2532 | /* Update image header. */
|
---|
2533 | setImageBlocksAllocated(&pImage->Header, uBlockUsedPos);
|
---|
2534 | vdiUpdateHeader(pImage);
|
---|
2535 |
|
---|
2536 | /* Truncate the image to the proper size to finish compacting. */
|
---|
2537 | rc = vdIfIoIntFileSetSize(pImage->pIfIo, pImage->pStorage,
|
---|
2538 | (uint64_t)uBlockUsedPos * pImage->cbTotalBlockData
|
---|
2539 | + pImage->offStartData + pImage->offStartBlockData);
|
---|
2540 | } while (0);
|
---|
2541 |
|
---|
2542 | if (paBlocks2)
|
---|
2543 | RTMemTmpFree(paBlocks2);
|
---|
2544 | if (pvTmp)
|
---|
2545 | RTMemTmpFree(pvTmp);
|
---|
2546 | if (pvBuf)
|
---|
2547 | RTMemTmpFree(pvBuf);
|
---|
2548 |
|
---|
2549 | if (RT_SUCCESS(rc))
|
---|
2550 | vdIfProgress(pIfProgress, uPercentStart + uPercentSpan);
|
---|
2551 |
|
---|
2552 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2553 | return rc;
|
---|
2554 | }
|
---|
2555 |
|
---|
2556 |
|
---|
2557 | /** @copydoc VDIMAGEBACKEND::pfnResize */
|
---|
2558 | static DECLCALLBACK(int) vdiResize(void *pBackendData, uint64_t cbSize,
|
---|
2559 | PCVDGEOMETRY pPCHSGeometry, PCVDGEOMETRY pLCHSGeometry,
|
---|
2560 | unsigned uPercentStart, unsigned uPercentSpan,
|
---|
2561 | PVDINTERFACE pVDIfsDisk, PVDINTERFACE pVDIfsImage,
|
---|
2562 | PVDINTERFACE pVDIfsOperation)
|
---|
2563 | {
|
---|
2564 | RT_NOREF5(uPercentStart, uPercentSpan, pVDIfsDisk, pVDIfsImage, pVDIfsOperation);
|
---|
2565 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2566 | int rc = VINF_SUCCESS;
|
---|
2567 |
|
---|
2568 | /* Check size. Maximum 4PB-3M. No tricks with adjusting the 1M block size
|
---|
2569 | * so far, which would extend the size. */
|
---|
2570 | if ( cbSize >= _1P * 4 - _1M * 3
|
---|
2571 | || cbSize < VDI_IMAGE_DEFAULT_BLOCK_SIZE)
|
---|
2572 | return VERR_VD_INVALID_SIZE;
|
---|
2573 |
|
---|
2574 | /*
|
---|
2575 | * Making the image smaller is not supported at the moment.
|
---|
2576 | * Resizing is also not supported for fixed size images and
|
---|
2577 | * very old images.
|
---|
2578 | */
|
---|
2579 | /** @todo implement making the image smaller, it is the responsibility of
|
---|
2580 | * the user to know what he's doing. */
|
---|
2581 | if (cbSize < getImageDiskSize(&pImage->Header))
|
---|
2582 | rc = VERR_VD_SHRINK_NOT_SUPPORTED;
|
---|
2583 | else if ( GET_MAJOR_HEADER_VERSION(&pImage->Header) == 0
|
---|
2584 | || pImage->uImageFlags & VD_IMAGE_FLAGS_FIXED)
|
---|
2585 | rc = VERR_NOT_SUPPORTED;
|
---|
2586 | else if (cbSize > getImageDiskSize(&pImage->Header))
|
---|
2587 | {
|
---|
2588 | unsigned cBlocksAllocated = getImageBlocksAllocated(&pImage->Header); /** < Blocks currently allocated, doesn't change during resize */
|
---|
2589 | unsigned const cbBlock = getImageBlockSize(&pImage->Header);
|
---|
2590 | uint32_t cBlocksNew = cbSize / cbBlock; /** < New number of blocks in the image after the resize */
|
---|
2591 | if (cbSize % cbBlock)
|
---|
2592 | cBlocksNew++;
|
---|
2593 |
|
---|
2594 | uint32_t cBlocksOld = getImageBlocks(&pImage->Header); /** < Number of blocks before the resize. */
|
---|
2595 | uint64_t cbBlockspaceNew = cBlocksNew * sizeof(VDIIMAGEBLOCKPOINTER); /** < Required space for the block array after the resize. */
|
---|
2596 | uint64_t offStartDataNew = RT_ALIGN_32(pImage->offStartBlocks + cbBlockspaceNew, VDI_DATA_ALIGN); /** < New start offset for block data after the resize */
|
---|
2597 |
|
---|
2598 | if (pImage->offStartData < offStartDataNew)
|
---|
2599 | {
|
---|
2600 | if (cBlocksAllocated > 0)
|
---|
2601 | {
|
---|
2602 | /* Calculate how many sectors need to be relocated. */
|
---|
2603 | uint64_t cbOverlapping = offStartDataNew - pImage->offStartData;
|
---|
2604 | unsigned cBlocksReloc = cbOverlapping / cbBlock;
|
---|
2605 | if (cbOverlapping % cbBlock)
|
---|
2606 | cBlocksReloc++;
|
---|
2607 |
|
---|
2608 | /* Since only full blocks can be relocated the new data start is
|
---|
2609 | * determined by moving it block by block. */
|
---|
2610 | cBlocksReloc = RT_MIN(cBlocksReloc, cBlocksAllocated);
|
---|
2611 | offStartDataNew = pImage->offStartData;
|
---|
2612 |
|
---|
2613 | /* Do the relocation. */
|
---|
2614 | LogFlow(("Relocating %u blocks\n", cBlocksReloc));
|
---|
2615 |
|
---|
2616 | /*
|
---|
2617 | * Get the blocks we need to relocate first, they are appended to the end
|
---|
2618 | * of the image.
|
---|
2619 | */
|
---|
2620 | void *pvBuf = NULL, *pvZero = NULL;
|
---|
2621 | do
|
---|
2622 | {
|
---|
2623 | /* Allocate data buffer. */
|
---|
2624 | pvBuf = RTMemAllocZ(pImage->cbTotalBlockData);
|
---|
2625 | if (!pvBuf)
|
---|
2626 | {
|
---|
2627 | rc = VERR_NO_MEMORY;
|
---|
2628 | break;
|
---|
2629 | }
|
---|
2630 |
|
---|
2631 | /* Allocate buffer for overwriting with zeroes. */
|
---|
2632 | pvZero = RTMemAllocZ(pImage->cbTotalBlockData);
|
---|
2633 | if (!pvZero)
|
---|
2634 | {
|
---|
2635 | rc = VERR_NO_MEMORY;
|
---|
2636 | break;
|
---|
2637 | }
|
---|
2638 |
|
---|
2639 | for (unsigned i = 0; i < cBlocksReloc; i++)
|
---|
2640 | {
|
---|
2641 | /* Search the index in the block table. */
|
---|
2642 | for (unsigned idxBlock = 0; idxBlock < cBlocksOld; idxBlock++)
|
---|
2643 | {
|
---|
2644 | if (!pImage->paBlocks[idxBlock])
|
---|
2645 | {
|
---|
2646 | /* Read data and append to the end of the image. */
|
---|
2647 | rc = vdIfIoIntFileReadSync(pImage->pIfIo, pImage->pStorage,
|
---|
2648 | offStartDataNew, pvBuf,
|
---|
2649 | pImage->cbTotalBlockData);
|
---|
2650 | if (RT_FAILURE(rc))
|
---|
2651 | break;
|
---|
2652 |
|
---|
2653 | uint64_t offBlockAppend;
|
---|
2654 | rc = vdIfIoIntFileGetSize(pImage->pIfIo, pImage->pStorage, &offBlockAppend);
|
---|
2655 | if (RT_FAILURE(rc))
|
---|
2656 | break;
|
---|
2657 |
|
---|
2658 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
|
---|
2659 | offBlockAppend, pvBuf,
|
---|
2660 | pImage->cbTotalBlockData);
|
---|
2661 | if (RT_FAILURE(rc))
|
---|
2662 | break;
|
---|
2663 |
|
---|
2664 | /* Zero out the old block area. */
|
---|
2665 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage,
|
---|
2666 | offStartDataNew, pvZero,
|
---|
2667 | pImage->cbTotalBlockData);
|
---|
2668 | if (RT_FAILURE(rc))
|
---|
2669 | break;
|
---|
2670 |
|
---|
2671 | /* Update block counter. */
|
---|
2672 | pImage->paBlocks[idxBlock] = cBlocksAllocated - 1;
|
---|
2673 |
|
---|
2674 | /*
|
---|
2675 | * Decrease the block number of all other entries in the array.
|
---|
2676 | * They were moved one block to the front.
|
---|
2677 | * Doing it as a separate step iterating over the array again
|
---|
2678 | * because an error while relocating the block might end up
|
---|
2679 | * in a corrupted image otherwise.
|
---|
2680 | */
|
---|
2681 | for (unsigned idxBlock2 = 0; idxBlock2 < cBlocksOld; idxBlock2++)
|
---|
2682 | {
|
---|
2683 | if ( idxBlock2 != idxBlock
|
---|
2684 | && IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[idxBlock2]))
|
---|
2685 | pImage->paBlocks[idxBlock2]--;
|
---|
2686 | }
|
---|
2687 |
|
---|
2688 | /* Continue with the next block. */
|
---|
2689 | break;
|
---|
2690 | }
|
---|
2691 | }
|
---|
2692 |
|
---|
2693 | if (RT_FAILURE(rc))
|
---|
2694 | break;
|
---|
2695 |
|
---|
2696 | offStartDataNew += pImage->cbTotalBlockData;
|
---|
2697 | }
|
---|
2698 | } while (0);
|
---|
2699 |
|
---|
2700 | if (pvBuf)
|
---|
2701 | RTMemFree(pvBuf);
|
---|
2702 | if (pvZero)
|
---|
2703 | RTMemFree(pvZero);
|
---|
2704 | }
|
---|
2705 |
|
---|
2706 | /*
|
---|
2707 | * We need to update the new offsets for the image data in the out of memory
|
---|
2708 | * case too because we relocated the blocks already.
|
---|
2709 | */
|
---|
2710 | pImage->offStartData = offStartDataNew;
|
---|
2711 | setImageDataOffset(&pImage->Header, offStartDataNew);
|
---|
2712 | }
|
---|
2713 |
|
---|
2714 | /*
|
---|
2715 | * Relocation done, expand the block array and update the header with
|
---|
2716 | * the new data.
|
---|
2717 | */
|
---|
2718 | if (RT_SUCCESS(rc))
|
---|
2719 | {
|
---|
2720 | PVDIIMAGEBLOCKPOINTER paBlocksNew = (PVDIIMAGEBLOCKPOINTER)RTMemRealloc(pImage->paBlocks, cbBlockspaceNew);
|
---|
2721 | if (paBlocksNew)
|
---|
2722 | {
|
---|
2723 | pImage->paBlocks = paBlocksNew;
|
---|
2724 |
|
---|
2725 | /* Mark the new blocks as unallocated. */
|
---|
2726 | for (unsigned idxBlock = cBlocksOld; idxBlock < cBlocksNew; idxBlock++)
|
---|
2727 | pImage->paBlocks[idxBlock] = VDI_IMAGE_BLOCK_FREE;
|
---|
2728 |
|
---|
2729 | /* Write the block array before updating the rest. */
|
---|
2730 | vdiConvBlocksEndianess(VDIECONV_H2F, pImage->paBlocks, cBlocksNew);
|
---|
2731 | rc = vdIfIoIntFileWriteSync(pImage->pIfIo, pImage->pStorage, pImage->offStartBlocks,
|
---|
2732 | pImage->paBlocks, cbBlockspaceNew);
|
---|
2733 | vdiConvBlocksEndianess(VDIECONV_F2H, pImage->paBlocks, cBlocksNew);
|
---|
2734 |
|
---|
2735 | if (RT_SUCCESS(rc))
|
---|
2736 | {
|
---|
2737 | /* Update size and new block count. */
|
---|
2738 | setImageDiskSize(&pImage->Header, cbSize);
|
---|
2739 | setImageBlocks(&pImage->Header, cBlocksNew);
|
---|
2740 | /* Update geometry. */
|
---|
2741 | pImage->PCHSGeometry = *pPCHSGeometry;
|
---|
2742 | pImage->cbImage = cbSize;
|
---|
2743 |
|
---|
2744 | PVDIDISKGEOMETRY pGeometry = getImageLCHSGeometry(&pImage->Header);
|
---|
2745 | if (pGeometry)
|
---|
2746 | {
|
---|
2747 | pGeometry->cCylinders = pLCHSGeometry->cCylinders;
|
---|
2748 | pGeometry->cHeads = pLCHSGeometry->cHeads;
|
---|
2749 | pGeometry->cSectors = pLCHSGeometry->cSectors;
|
---|
2750 | pGeometry->cbSector = VDI_GEOMETRY_SECTOR_SIZE;
|
---|
2751 | }
|
---|
2752 | }
|
---|
2753 | }
|
---|
2754 | else
|
---|
2755 | rc = VERR_NO_MEMORY;
|
---|
2756 | }
|
---|
2757 |
|
---|
2758 | /* Update header information in base image file. */
|
---|
2759 | vdiFlushImage(pImage);
|
---|
2760 | }
|
---|
2761 | /* Same size doesn't change the image at all. */
|
---|
2762 |
|
---|
2763 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2764 | return rc;
|
---|
2765 | }
|
---|
2766 |
|
---|
2767 | /** @copydoc VDIMAGEBACKEND::pfnDiscard */
|
---|
2768 | static DECLCALLBACK(int) vdiDiscard(void *pBackendData, PVDIOCTX pIoCtx,
|
---|
2769 | uint64_t uOffset, size_t cbDiscard,
|
---|
2770 | size_t *pcbPreAllocated, size_t *pcbPostAllocated,
|
---|
2771 | size_t *pcbActuallyDiscarded, void **ppbmAllocationBitmap,
|
---|
2772 | unsigned fDiscard)
|
---|
2773 | {
|
---|
2774 | PVDIIMAGEDESC pImage = (PVDIIMAGEDESC)pBackendData;
|
---|
2775 | unsigned uBlock;
|
---|
2776 | unsigned offDiscard;
|
---|
2777 | int rc = VINF_SUCCESS;
|
---|
2778 | void *pvBlock = NULL;
|
---|
2779 |
|
---|
2780 | LogFlowFunc(("pBackendData=%#p pIoCtx=%#p uOffset=%llu cbDiscard=%zu pcbPreAllocated=%#p pcbPostAllocated=%#p pcbActuallyDiscarded=%#p ppbmAllocationBitmap=%#p fDiscard=%#x\n",
|
---|
2781 | pBackendData, pIoCtx, uOffset, cbDiscard, pcbPreAllocated, pcbPostAllocated, pcbActuallyDiscarded, ppbmAllocationBitmap, fDiscard));
|
---|
2782 |
|
---|
2783 | AssertPtr(pImage);
|
---|
2784 | Assert(!(uOffset % 512));
|
---|
2785 | Assert(!(cbDiscard % 512));
|
---|
2786 |
|
---|
2787 | AssertMsgReturn(!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY),
|
---|
2788 | ("Image is readonly\n"), VERR_VD_IMAGE_READ_ONLY);
|
---|
2789 | AssertMsgReturn( uOffset + cbDiscard <= getImageDiskSize(&pImage->Header)
|
---|
2790 | && cbDiscard,
|
---|
2791 | ("Invalid parameters uOffset=%llu cbDiscard=%zu\n",
|
---|
2792 | uOffset, cbDiscard),
|
---|
2793 | VERR_INVALID_PARAMETER);
|
---|
2794 |
|
---|
2795 | do
|
---|
2796 | {
|
---|
2797 | AssertMsgBreakStmt(!(pImage->uOpenFlags & VD_OPEN_FLAGS_READONLY),
|
---|
2798 | ("Image is opened readonly\n"),
|
---|
2799 | rc = VERR_VD_IMAGE_READ_ONLY);
|
---|
2800 |
|
---|
2801 | AssertMsgBreakStmt(cbDiscard,
|
---|
2802 | ("cbDiscard=%u\n", cbDiscard),
|
---|
2803 | rc = VERR_INVALID_PARAMETER);
|
---|
2804 |
|
---|
2805 | /* Calculate starting block number and offset inside it. */
|
---|
2806 | uBlock = (unsigned)(uOffset >> pImage->uShiftOffset2Index);
|
---|
2807 | offDiscard = (unsigned)uOffset & pImage->uBlockMask;
|
---|
2808 |
|
---|
2809 | /* Clip range to at most the rest of the block. */
|
---|
2810 | size_t cbBlockRem = getImageBlockSize(&pImage->Header) - offDiscard;
|
---|
2811 | cbDiscard = RT_MIN(cbDiscard, cbBlockRem);
|
---|
2812 | Assert(!(cbDiscard % 512));
|
---|
2813 |
|
---|
2814 | if (pcbPreAllocated)
|
---|
2815 | *pcbPreAllocated = 0;
|
---|
2816 |
|
---|
2817 | if (pcbPostAllocated)
|
---|
2818 | *pcbPostAllocated = 0;
|
---|
2819 |
|
---|
2820 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(pImage->paBlocks[uBlock]))
|
---|
2821 | {
|
---|
2822 | unsigned const cbBlock = getImageBlockSize(&pImage->Header);
|
---|
2823 | size_t const cbPreAllocated = offDiscard % cbBlock;
|
---|
2824 | size_t const cbPostAllocated = getImageBlockSize(&pImage->Header) - cbDiscard - cbPreAllocated;
|
---|
2825 | uint8_t *pbBlockData;
|
---|
2826 |
|
---|
2827 | /* Read the block data. */
|
---|
2828 | pvBlock = RTMemAlloc(pImage->cbTotalBlockData);
|
---|
2829 | if (!pvBlock)
|
---|
2830 | {
|
---|
2831 | rc = VERR_NO_MEMORY;
|
---|
2832 | break;
|
---|
2833 | }
|
---|
2834 |
|
---|
2835 | if (!cbPreAllocated && !cbPostAllocated)
|
---|
2836 | {
|
---|
2837 | /*
|
---|
2838 | * Discarding a whole block, don't check for allocated sectors.
|
---|
2839 | * It is possible to just remove the whole block which avoids
|
---|
2840 | * one read and checking the whole block for data.
|
---|
2841 | */
|
---|
2842 | rc = vdiDiscardBlockAsync(pImage, pIoCtx, uBlock, pvBlock);
|
---|
2843 | }
|
---|
2844 | else if (fDiscard & VD_DISCARD_MARK_UNUSED)
|
---|
2845 | {
|
---|
2846 | /* Just zero out the given range. */
|
---|
2847 | memset(pvBlock, 0, cbDiscard);
|
---|
2848 |
|
---|
2849 | uint64_t u64Offset = (uint64_t)pImage->paBlocks[uBlock] * pImage->cbTotalBlockData + pImage->offStartData + offDiscard;
|
---|
2850 | rc = vdIfIoIntFileWriteMeta(pImage->pIfIo, pImage->pStorage,
|
---|
2851 | u64Offset, pvBlock, cbDiscard, pIoCtx,
|
---|
2852 | NULL, NULL);
|
---|
2853 | RTMemFree(pvBlock);
|
---|
2854 | }
|
---|
2855 | else
|
---|
2856 | {
|
---|
2857 | /*
|
---|
2858 | * Read complete block as metadata, the I/O context has no memory buffer
|
---|
2859 | * and we need to access the content directly anyway.
|
---|
2860 | */
|
---|
2861 | PVDMETAXFER pMetaXfer;
|
---|
2862 | pbBlockData = (uint8_t *)pvBlock + pImage->offStartBlockData;
|
---|
2863 |
|
---|
2864 | uint64_t u64Offset = (uint64_t)pImage->paBlocks[uBlock] * pImage->cbTotalBlockData + pImage->offStartData;
|
---|
2865 | rc = vdIfIoIntFileReadMeta(pImage->pIfIo, pImage->pStorage, u64Offset,
|
---|
2866 | pbBlockData, pImage->cbTotalBlockData,
|
---|
2867 | pIoCtx, &pMetaXfer, NULL, NULL);
|
---|
2868 | if (RT_FAILURE(rc))
|
---|
2869 | {
|
---|
2870 | RTMemFree(pvBlock);
|
---|
2871 | break;
|
---|
2872 | }
|
---|
2873 |
|
---|
2874 | vdIfIoIntMetaXferRelease(pImage->pIfIo, pMetaXfer);
|
---|
2875 |
|
---|
2876 | /* Clear data. */
|
---|
2877 | memset(pbBlockData + offDiscard , 0, cbDiscard);
|
---|
2878 |
|
---|
2879 | Assert(!(cbDiscard % 4));
|
---|
2880 | Assert(getImageBlockSize(&pImage->Header) * 8 <= UINT32_MAX);
|
---|
2881 | if (ASMBitFirstSet((volatile void *)pbBlockData, getImageBlockSize(&pImage->Header) * 8) == -1)
|
---|
2882 | rc = vdiDiscardBlockAsync(pImage, pIoCtx, uBlock, pvBlock);
|
---|
2883 | else
|
---|
2884 | {
|
---|
2885 | /* Block has data, create allocation bitmap. */
|
---|
2886 | *pcbPreAllocated = cbPreAllocated;
|
---|
2887 | *pcbPostAllocated = cbPostAllocated;
|
---|
2888 | *ppbmAllocationBitmap = vdiAllocationBitmapCreate(pbBlockData, getImageBlockSize(&pImage->Header));
|
---|
2889 | if (RT_UNLIKELY(!*ppbmAllocationBitmap))
|
---|
2890 | rc = VERR_NO_MEMORY;
|
---|
2891 | else
|
---|
2892 | rc = VERR_VD_DISCARD_ALIGNMENT_NOT_MET;
|
---|
2893 |
|
---|
2894 | RTMemFree(pvBlock);
|
---|
2895 | }
|
---|
2896 | } /* if: no complete block discarded */
|
---|
2897 | } /* if: Block is allocated. */
|
---|
2898 | /* else: nothing to do. */
|
---|
2899 | } while (0);
|
---|
2900 |
|
---|
2901 | if (pcbActuallyDiscarded)
|
---|
2902 | *pcbActuallyDiscarded = cbDiscard;
|
---|
2903 |
|
---|
2904 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
2905 | return rc;
|
---|
2906 | }
|
---|
2907 |
|
---|
2908 | /** @copydoc VDIMAGEBACKEND::pfnRepair */
|
---|
2909 | static DECLCALLBACK(int) vdiRepair(const char *pszFilename, PVDINTERFACE pVDIfsDisk,
|
---|
2910 | PVDINTERFACE pVDIfsImage, uint32_t fFlags)
|
---|
2911 | {
|
---|
2912 | LogFlowFunc(("pszFilename=\"%s\" pVDIfsDisk=%#p pVDIfsImage=%#p\n", pszFilename, pVDIfsDisk, pVDIfsImage));
|
---|
2913 | int rc;
|
---|
2914 | PVDINTERFACEERROR pIfError;
|
---|
2915 | PVDINTERFACEIOINT pIfIo;
|
---|
2916 | PVDIOSTORAGE pStorage = NULL;
|
---|
2917 | uint64_t cbFile;
|
---|
2918 | PVDIIMAGEBLOCKPOINTER paBlocks = NULL;
|
---|
2919 | uint32_t *pu32BlockBitmap = NULL;
|
---|
2920 | VDIPREHEADER PreHdr;
|
---|
2921 | VDIHEADER Hdr;
|
---|
2922 |
|
---|
2923 | pIfIo = VDIfIoIntGet(pVDIfsImage);
|
---|
2924 | AssertPtrReturn(pIfIo, VERR_INVALID_PARAMETER);
|
---|
2925 |
|
---|
2926 | pIfError = VDIfErrorGet(pVDIfsDisk);
|
---|
2927 |
|
---|
2928 | do
|
---|
2929 | {
|
---|
2930 | bool fRepairBlockArray = false;
|
---|
2931 | bool fRepairHdr = false;
|
---|
2932 |
|
---|
2933 | rc = vdIfIoIntFileOpen(pIfIo, pszFilename,
|
---|
2934 | VDOpenFlagsToFileOpenFlags( fFlags & VD_REPAIR_DRY_RUN
|
---|
2935 | ? VD_OPEN_FLAGS_READONLY
|
---|
2936 | : 0,
|
---|
2937 | false /* fCreate */),
|
---|
2938 | &pStorage);
|
---|
2939 | if (RT_FAILURE(rc))
|
---|
2940 | {
|
---|
2941 | rc = vdIfError(pIfError, rc, RT_SRC_POS, "VDI: Failed to open image \"%s\"", pszFilename);
|
---|
2942 | break;
|
---|
2943 | }
|
---|
2944 |
|
---|
2945 | rc = vdIfIoIntFileGetSize(pIfIo, pStorage, &cbFile);
|
---|
2946 | if (RT_FAILURE(rc))
|
---|
2947 | {
|
---|
2948 | rc = vdIfError(pIfError, rc, RT_SRC_POS, "VDI: Failed to query image size");
|
---|
2949 | break;
|
---|
2950 | }
|
---|
2951 |
|
---|
2952 | /* Read pre-header. */
|
---|
2953 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, 0, &PreHdr, sizeof(PreHdr));
|
---|
2954 | if (RT_FAILURE(rc))
|
---|
2955 | {
|
---|
2956 | rc = vdIfError(pIfError, rc, RT_SRC_POS, N_("VDI: Error reading pre-header in '%s'"), pszFilename);
|
---|
2957 | break;
|
---|
2958 | }
|
---|
2959 | vdiConvPreHeaderEndianess(VDIECONV_F2H, &PreHdr, &PreHdr);
|
---|
2960 | rc = vdiValidatePreHeader(&PreHdr);
|
---|
2961 | if (RT_FAILURE(rc))
|
---|
2962 | {
|
---|
2963 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
2964 | N_("VDI: invalid pre-header in '%s'"), pszFilename);
|
---|
2965 | break;
|
---|
2966 | }
|
---|
2967 |
|
---|
2968 | /* Read header. */
|
---|
2969 | Hdr.uVersion = PreHdr.u32Version;
|
---|
2970 | switch (GET_MAJOR_HEADER_VERSION(&Hdr))
|
---|
2971 | {
|
---|
2972 | case 0:
|
---|
2973 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, sizeof(PreHdr),
|
---|
2974 | &Hdr.u.v0, sizeof(Hdr.u.v0));
|
---|
2975 | if (RT_FAILURE(rc))
|
---|
2976 | rc = vdIfError(pIfError, rc, RT_SRC_POS, N_("VDI: error reading v0 header in '%s'"),
|
---|
2977 | pszFilename);
|
---|
2978 | vdiConvHeaderEndianessV0(VDIECONV_F2H, &Hdr.u.v0, &Hdr.u.v0);
|
---|
2979 | break;
|
---|
2980 | case 1:
|
---|
2981 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, sizeof(PreHdr),
|
---|
2982 | &Hdr.u.v1, sizeof(Hdr.u.v1));
|
---|
2983 | if (RT_FAILURE(rc))
|
---|
2984 | {
|
---|
2985 | rc = vdIfError(pIfError, rc, RT_SRC_POS, N_("VDI: error reading v1 header in '%s'"),
|
---|
2986 | pszFilename);
|
---|
2987 | }
|
---|
2988 | vdiConvHeaderEndianessV1(VDIECONV_F2H, &Hdr.u.v1, &Hdr.u.v1);
|
---|
2989 | if (Hdr.u.v1.cbHeader >= sizeof(Hdr.u.v1plus))
|
---|
2990 | {
|
---|
2991 | /* Read the VDI 1.1+ header completely. */
|
---|
2992 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, sizeof(PreHdr),
|
---|
2993 | &Hdr.u.v1plus, sizeof(Hdr.u.v1plus));
|
---|
2994 | if (RT_FAILURE(rc))
|
---|
2995 | rc = vdIfError(pIfError, rc, RT_SRC_POS, N_("VDI: error reading v1.1+ header in '%s'"),
|
---|
2996 | pszFilename);
|
---|
2997 | vdiConvHeaderEndianessV1p(VDIECONV_F2H, &Hdr.u.v1plus, &Hdr.u.v1plus);
|
---|
2998 | }
|
---|
2999 | break;
|
---|
3000 | default:
|
---|
3001 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
3002 | N_("VDI: unsupported major version %u in '%s'"),
|
---|
3003 | GET_MAJOR_HEADER_VERSION(&Hdr), pszFilename);
|
---|
3004 | break;
|
---|
3005 | }
|
---|
3006 |
|
---|
3007 | if (RT_SUCCESS(rc))
|
---|
3008 | {
|
---|
3009 | rc = vdiValidateHeader(&Hdr);
|
---|
3010 | if (RT_FAILURE(rc))
|
---|
3011 | {
|
---|
3012 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
3013 | N_("VDI: invalid header in '%s'"), pszFilename);
|
---|
3014 | break;
|
---|
3015 | }
|
---|
3016 | }
|
---|
3017 |
|
---|
3018 | /*
|
---|
3019 | * Check that the disk size is correctly aligned,
|
---|
3020 | * see comment above the same check in vdiImageReadHeader().
|
---|
3021 | */
|
---|
3022 | uint64_t cbDisk = getImageDiskSize(&Hdr);
|
---|
3023 | if (cbDisk & 0x1ff)
|
---|
3024 | {
|
---|
3025 | uint64_t cbDiskNew = cbDisk & ~UINT64_C(0x1ff);
|
---|
3026 | vdIfErrorMessage(pIfError, "Disk size in the header is not sector aligned, rounding down (%llu -> %llu)\n",
|
---|
3027 | cbDisk, cbDiskNew);
|
---|
3028 | setImageDiskSize(&Hdr, cbDiskNew);
|
---|
3029 | fRepairHdr = true;
|
---|
3030 | }
|
---|
3031 |
|
---|
3032 | /* Setup image parameters by header. */
|
---|
3033 | uint64_t offStartBlocks, offStartData;
|
---|
3034 | size_t cbTotalBlockData;
|
---|
3035 |
|
---|
3036 | offStartBlocks = getImageBlocksOffset(&Hdr);
|
---|
3037 | offStartData = getImageDataOffset(&Hdr);
|
---|
3038 | cbTotalBlockData = getImageExtraBlockSize(&Hdr) + getImageBlockSize(&Hdr);
|
---|
3039 |
|
---|
3040 | /* Allocate memory for blocks array. */
|
---|
3041 | paBlocks = (PVDIIMAGEBLOCKPOINTER)RTMemAlloc(sizeof(VDIIMAGEBLOCKPOINTER) * getImageBlocks(&Hdr));
|
---|
3042 | if (!paBlocks)
|
---|
3043 | {
|
---|
3044 | rc = vdIfError(pIfError, VERR_NO_MEMORY, RT_SRC_POS,
|
---|
3045 | "Failed to allocate memory for block array");
|
---|
3046 | break;
|
---|
3047 | }
|
---|
3048 |
|
---|
3049 | /* Read blocks array. */
|
---|
3050 | rc = vdIfIoIntFileReadSync(pIfIo, pStorage, offStartBlocks, paBlocks,
|
---|
3051 | getImageBlocks(&Hdr) * sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
3052 | if (RT_FAILURE(rc))
|
---|
3053 | {
|
---|
3054 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
3055 | "Failed to read block array (at %llu), %Rrc",
|
---|
3056 | offStartBlocks, rc);
|
---|
3057 | break;
|
---|
3058 | }
|
---|
3059 | vdiConvBlocksEndianess(VDIECONV_F2H, paBlocks, getImageBlocks(&Hdr));
|
---|
3060 |
|
---|
3061 | pu32BlockBitmap = (uint32_t *)RTMemAllocZ(RT_ALIGN_Z(getImageBlocks(&Hdr) / 8, 4));
|
---|
3062 | if (!pu32BlockBitmap)
|
---|
3063 | {
|
---|
3064 | rc = vdIfError(pIfError, VERR_NO_MEMORY, RT_SRC_POS,
|
---|
3065 | "Failed to allocate memory for block bitmap");
|
---|
3066 | break;
|
---|
3067 | }
|
---|
3068 |
|
---|
3069 | for (uint32_t i = 0; i < getImageBlocks(&Hdr); i++)
|
---|
3070 | {
|
---|
3071 | if (IS_VDI_IMAGE_BLOCK_ALLOCATED(paBlocks[i]))
|
---|
3072 | {
|
---|
3073 | uint64_t offBlock = (uint64_t)paBlocks[i] * cbTotalBlockData
|
---|
3074 | + offStartData;
|
---|
3075 |
|
---|
3076 | /*
|
---|
3077 | * Check that the offsets are valid (inside of the image) and
|
---|
3078 | * that there are no double references.
|
---|
3079 | */
|
---|
3080 | if (offBlock + cbTotalBlockData > cbFile)
|
---|
3081 | {
|
---|
3082 | vdIfErrorMessage(pIfError, "Entry %u points to invalid offset %llu, clearing\n",
|
---|
3083 | i, offBlock);
|
---|
3084 | paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
3085 | fRepairBlockArray = true;
|
---|
3086 | }
|
---|
3087 | else if (ASMBitTestAndSet(pu32BlockBitmap, paBlocks[i]))
|
---|
3088 | {
|
---|
3089 | vdIfErrorMessage(pIfError, "Entry %u points to an already referenced data block, clearing\n",
|
---|
3090 | i);
|
---|
3091 | paBlocks[i] = VDI_IMAGE_BLOCK_FREE;
|
---|
3092 | fRepairBlockArray = true;
|
---|
3093 | }
|
---|
3094 | }
|
---|
3095 | }
|
---|
3096 |
|
---|
3097 | /* Write repaired structures now. */
|
---|
3098 | if (!fRepairBlockArray && !fRepairHdr)
|
---|
3099 | vdIfErrorMessage(pIfError, "VDI image is in a consistent state, no repair required\n");
|
---|
3100 | else if (!(fFlags & VD_REPAIR_DRY_RUN))
|
---|
3101 | {
|
---|
3102 | if (fRepairHdr)
|
---|
3103 | {
|
---|
3104 | switch (GET_MAJOR_HEADER_VERSION(&Hdr))
|
---|
3105 | {
|
---|
3106 | case 0:
|
---|
3107 | {
|
---|
3108 | VDIHEADER0 Hdr0;
|
---|
3109 | vdiConvHeaderEndianessV0(VDIECONV_H2F, &Hdr0, &Hdr.u.v0);
|
---|
3110 | rc = vdIfIoIntFileWriteSync(pIfIo, pStorage, sizeof(VDIPREHEADER),
|
---|
3111 | &Hdr0, sizeof(Hdr0));
|
---|
3112 | break;
|
---|
3113 | }
|
---|
3114 | case 1:
|
---|
3115 | if (Hdr.u.v1plus.cbHeader < sizeof(Hdr.u.v1plus))
|
---|
3116 | {
|
---|
3117 | VDIHEADER1 Hdr1;
|
---|
3118 | vdiConvHeaderEndianessV1(VDIECONV_H2F, &Hdr1, &Hdr.u.v1);
|
---|
3119 | rc = vdIfIoIntFileWriteSync(pIfIo, pStorage, sizeof(VDIPREHEADER),
|
---|
3120 | &Hdr1, sizeof(Hdr1));
|
---|
3121 | }
|
---|
3122 | else
|
---|
3123 | {
|
---|
3124 | VDIHEADER1PLUS Hdr1plus;
|
---|
3125 | vdiConvHeaderEndianessV1p(VDIECONV_H2F, &Hdr1plus, &Hdr.u.v1plus);
|
---|
3126 | rc = vdIfIoIntFileWriteSync(pIfIo, pStorage, sizeof(VDIPREHEADER),
|
---|
3127 | &Hdr1plus, sizeof(Hdr1plus));
|
---|
3128 | }
|
---|
3129 | break;
|
---|
3130 | default:
|
---|
3131 | AssertMsgFailed(("Header indicates unsupported version which should not happen here!\n"));
|
---|
3132 | rc = VERR_VD_VDI_UNSUPPORTED_VERSION;
|
---|
3133 | break;
|
---|
3134 | }
|
---|
3135 | }
|
---|
3136 |
|
---|
3137 | if (fRepairBlockArray)
|
---|
3138 | {
|
---|
3139 | vdIfErrorMessage(pIfError, "Writing repaired block allocation table...\n");
|
---|
3140 |
|
---|
3141 | vdiConvBlocksEndianess(VDIECONV_H2F, paBlocks, getImageBlocks(&Hdr));
|
---|
3142 | rc = vdIfIoIntFileWriteSync(pIfIo, pStorage, offStartBlocks, paBlocks,
|
---|
3143 | getImageBlocks(&Hdr) * sizeof(VDIIMAGEBLOCKPOINTER));
|
---|
3144 | if (RT_FAILURE(rc))
|
---|
3145 | {
|
---|
3146 | rc = vdIfError(pIfError, VERR_VD_IMAGE_REPAIR_IMPOSSIBLE, RT_SRC_POS,
|
---|
3147 | "Could not write repaired block allocation table (at %llu), %Rrc",
|
---|
3148 | offStartBlocks, rc);
|
---|
3149 | break;
|
---|
3150 | }
|
---|
3151 | }
|
---|
3152 | }
|
---|
3153 |
|
---|
3154 | vdIfErrorMessage(pIfError, "Corrupted VDI image repaired successfully\n");
|
---|
3155 | } while(0);
|
---|
3156 |
|
---|
3157 | if (paBlocks)
|
---|
3158 | RTMemFree(paBlocks);
|
---|
3159 |
|
---|
3160 | if (pu32BlockBitmap)
|
---|
3161 | RTMemFree(pu32BlockBitmap);
|
---|
3162 |
|
---|
3163 | if (pStorage)
|
---|
3164 | {
|
---|
3165 | int rc2 = vdIfIoIntFileClose(pIfIo, pStorage);
|
---|
3166 | if (RT_SUCCESS(rc))
|
---|
3167 | rc = rc2; /* Propagate error code only if repairing was successful. */
|
---|
3168 | }
|
---|
3169 |
|
---|
3170 | LogFlowFunc(("returns %Rrc\n", rc));
|
---|
3171 | return rc;
|
---|
3172 | }
|
---|
3173 |
|
---|
3174 | const VDIMAGEBACKEND g_VDIBackend =
|
---|
3175 | {
|
---|
3176 | /* u32Version */
|
---|
3177 | VD_IMGBACKEND_VERSION,
|
---|
3178 | /* pszBackendName */
|
---|
3179 | "VDI",
|
---|
3180 | /* uBackendCaps */
|
---|
3181 | VD_CAP_UUID | VD_CAP_CREATE_FIXED | VD_CAP_CREATE_DYNAMIC
|
---|
3182 | | VD_CAP_DIFF | VD_CAP_FILE | VD_CAP_ASYNC | VD_CAP_VFS | VD_CAP_DISCARD
|
---|
3183 | | VD_CAP_PREFERRED,
|
---|
3184 | /* paFileExtensions */
|
---|
3185 | s_aVdiFileExtensions,
|
---|
3186 | /* paConfigInfo */
|
---|
3187 | vdiConfigInfo,
|
---|
3188 | /* pfnProbe */
|
---|
3189 | vdiProbe,
|
---|
3190 | /* pfnOpen */
|
---|
3191 | vdiOpen,
|
---|
3192 | /* pfnCreate */
|
---|
3193 | vdiCreate,
|
---|
3194 | /* pfnRename */
|
---|
3195 | vdiRename,
|
---|
3196 | /* pfnClose */
|
---|
3197 | vdiClose,
|
---|
3198 | /* pfnRead */
|
---|
3199 | vdiRead,
|
---|
3200 | /* pfnWrite */
|
---|
3201 | vdiWrite,
|
---|
3202 | /* pfnFlush */
|
---|
3203 | vdiFlush,
|
---|
3204 | /* pfnDiscard */
|
---|
3205 | vdiDiscard,
|
---|
3206 | /* pfnGetVersion */
|
---|
3207 | vdiGetVersion,
|
---|
3208 | /* pfnGetFileSize */
|
---|
3209 | vdiGetFileSize,
|
---|
3210 | /* pfnGetPCHSGeometry */
|
---|
3211 | vdiGetPCHSGeometry,
|
---|
3212 | /* pfnSetPCHSGeometry */
|
---|
3213 | vdiSetPCHSGeometry,
|
---|
3214 | /* pfnGetLCHSGeometry */
|
---|
3215 | vdiGetLCHSGeometry,
|
---|
3216 | /* pfnSetLCHSGeometry */
|
---|
3217 | vdiSetLCHSGeometry,
|
---|
3218 | /* pfnQueryRegions */
|
---|
3219 | vdiQueryRegions,
|
---|
3220 | /* pfnRegionListRelease */
|
---|
3221 | vdiRegionListRelease,
|
---|
3222 | /* pfnGetImageFlags */
|
---|
3223 | vdiGetImageFlags,
|
---|
3224 | /* pfnGetOpenFlags */
|
---|
3225 | vdiGetOpenFlags,
|
---|
3226 | /* pfnSetOpenFlags */
|
---|
3227 | vdiSetOpenFlags,
|
---|
3228 | /* pfnGetComment */
|
---|
3229 | vdiGetComment,
|
---|
3230 | /* pfnSetComment */
|
---|
3231 | vdiSetComment,
|
---|
3232 | /* pfnGetUuid */
|
---|
3233 | vdiGetUuid,
|
---|
3234 | /* pfnSetUuid */
|
---|
3235 | vdiSetUuid,
|
---|
3236 | /* pfnGetModificationUuid */
|
---|
3237 | vdiGetModificationUuid,
|
---|
3238 | /* pfnSetModificationUuid */
|
---|
3239 | vdiSetModificationUuid,
|
---|
3240 | /* pfnGetParentUuid */
|
---|
3241 | vdiGetParentUuid,
|
---|
3242 | /* pfnSetParentUuid */
|
---|
3243 | vdiSetParentUuid,
|
---|
3244 | /* pfnGetParentModificationUuid */
|
---|
3245 | vdiGetParentModificationUuid,
|
---|
3246 | /* pfnSetParentModificationUuid */
|
---|
3247 | vdiSetParentModificationUuid,
|
---|
3248 | /* pfnDump */
|
---|
3249 | vdiDump,
|
---|
3250 | /* pfnGetTimestamp */
|
---|
3251 | NULL,
|
---|
3252 | /* pfnGetParentTimestamp */
|
---|
3253 | NULL,
|
---|
3254 | /* pfnSetParentTimestamp */
|
---|
3255 | NULL,
|
---|
3256 | /* pfnGetParentFilename */
|
---|
3257 | NULL,
|
---|
3258 | /* pfnSetParentFilename */
|
---|
3259 | NULL,
|
---|
3260 | /* pfnComposeLocation */
|
---|
3261 | genericFileComposeLocation,
|
---|
3262 | /* pfnComposeName */
|
---|
3263 | genericFileComposeName,
|
---|
3264 | /* pfnCompact */
|
---|
3265 | vdiCompact,
|
---|
3266 | /* pfnResize */
|
---|
3267 | vdiResize,
|
---|
3268 | /* pfnRepair */
|
---|
3269 | vdiRepair,
|
---|
3270 | /* pfnTraverseMetadata */
|
---|
3271 | NULL,
|
---|
3272 | /* u32VersionEnd */
|
---|
3273 | VD_IMGBACKEND_VERSION
|
---|
3274 | };
|
---|