VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/dvm/dvmgpt.cpp@ 74525

Last change on this file since 74525 was 73156, checked in by vboxsync, 6 years ago

IPRT/DVM: Added more GUID and partition types. The VFS directory enum now returns symlink objects with the partition name linking to volXX when a name is present (there can be duplicates).

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1/* $Id: dvmgpt.cpp 73156 2018-07-16 12:37:19Z vboxsync $ */
2/** @file
3 * IPRT Disk Volume Management API (DVM) - GPT format backend.
4 */
5
6/*
7 * Copyright (C) 2011-2017 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include <iprt/types.h>
32#include <iprt/assert.h>
33#include <iprt/mem.h>
34#include <iprt/dvm.h>
35#include <iprt/string.h>
36#include <iprt/uuid.h>
37#include <iprt/asm.h>
38#include "internal/dvm.h"
39
40
41/*********************************************************************************************************************************
42* Structures and Typedefs *
43*********************************************************************************************************************************/
44/** The GPT signature. */
45#define RTDVM_GPT_SIGNATURE "EFI PART"
46
47/**
48 * GPT on disk header.
49 */
50typedef struct GPTHDR
51{
52 /** 0x00: Signature ("EFI PART"). */
53 char abSignature[8];
54 /** 0x08: Revision. */
55 uint32_t u32Revision;
56 /** 0x0c: Header size. */
57 uint32_t cbHeader;
58 /** 0x10: CRC of header. */
59 uint32_t u32Crc;
60} GPTHDR;
61/** Pointer to a GPT header. */
62typedef struct GPTHDR *PGPTHDR;
63AssertCompileSize(GPTHDR, 20);
64
65/**
66 * Complete GPT table header for revision 1.0.
67 */
68#pragma pack(1)
69typedef struct GPTHDRREV1
70{
71 /** 0x00: Header. */
72 GPTHDR Hdr;
73 /** 0x14: Reserved. */
74 uint32_t u32Reserved;
75 /** 0x18: Current LBA. */
76 uint64_t u64LbaCurrent;
77 /** 0x20: Backup LBA. */
78 uint64_t u64LbaBackup;
79 /** 0x28:First usable LBA for partitions. */
80 uint64_t u64LbaFirstPartition;
81 /** 0x30: Last usable LBA for partitions. */
82 uint64_t u64LbaLastPartition;
83 /** 0x38: Disk UUID. */
84 RTUUID DiskUuid;
85 /** 0x48: LBA of first partition entry. */
86 uint64_t u64LbaPartitionEntries;
87 /** 0x50: Number of partition entries. */
88 uint32_t cPartitionEntries;
89 /** 0x54: Partition entry size. */
90 uint32_t cbPartitionEntry;
91 /** 0x58: CRC of partition entries. */
92 uint32_t u32CrcPartitionEntries;
93} GPTHDRREV1;
94/** Pointer to a revision 1.0 GPT header. */
95typedef GPTHDRREV1 *PGPTHDRREV1;
96#pragma pack()
97AssertCompileSize(GPTHDRREV1, 92);
98
99/**
100 * GPT partition table entry.
101 */
102typedef struct GPTENTRY
103{
104 /** 0x00: Partition type UUID. */
105 RTUUID UuidType;
106 /** 0x10: Partition UUID. */
107 RTUUID UuidPartition;
108 /** 0x20: First LBA. */
109 uint64_t u64LbaFirst;
110 /** 0x28: Last LBA. */
111 uint64_t u64LbaLast;
112 /** 0x30: Attribute flags. */
113 uint64_t u64Flags;
114 /** 0x38: Partition name (UTF-16LE code units). */
115 RTUTF16 aPartitionName[36];
116} GPTENTRY;
117/** Pointer to a GPT entry. */
118typedef struct GPTENTRY *PGPTENTRY;
119AssertCompileSize(GPTENTRY, 128);
120
121/** Partition flags - System partition. */
122#define RTDVM_GPT_ENTRY_SYSTEM RT_BIT_64(0)
123/** Partition flags - Partition is readonly. */
124#define RTDVM_GPT_ENTRY_READONLY RT_BIT_64(60)
125/** Partition flags - Partition is hidden. */
126#define RTDVM_GPT_ENTRY_HIDDEN RT_BIT_64(62)
127/** Partition flags - Don't automount this partition. */
128#define RTDVM_GPT_ENTRY_NO_AUTOMOUNT RT_BIT_64(63)
129
130/**
131 * GPT volume manager data.
132 */
133typedef struct RTDVMFMTINTERNAL
134{
135 /** Pointer to the underlying disk. */
136 PCRTDVMDISK pDisk;
137 /** GPT header. */
138 GPTHDRREV1 HdrRev1;
139 /** GPT array. */
140 PGPTENTRY paGptEntries;
141 /** Number of occupied partition entries. */
142 uint32_t cPartitions;
143} RTDVMFMTINTERNAL;
144/** Pointer to the MBR volume manager. */
145typedef RTDVMFMTINTERNAL *PRTDVMFMTINTERNAL;
146
147/**
148 * GPT volume data.
149 */
150typedef struct RTDVMVOLUMEFMTINTERNAL
151{
152 /** Pointer to the volume manager. */
153 PRTDVMFMTINTERNAL pVolMgr;
154 /** Partition table entry index. */
155 uint32_t idxEntry;
156 /** Start offset of the volume. */
157 uint64_t offStart;
158 /** Size of the volume. */
159 uint64_t cbVolume;
160 /** Pointer to the GPT entry in the array. */
161 PGPTENTRY pGptEntry;
162} RTDVMVOLUMEFMTINTERNAL;
163/** Pointer to an MBR volume. */
164typedef RTDVMVOLUMEFMTINTERNAL *PRTDVMVOLUMEFMTINTERNAL;
165
166/**
167 * GPT partition type to DVM volume type mapping entry.
168 */
169
170typedef struct RTDVMGPTPARTTYPE2VOLTYPE
171{
172 /** Type UUID. */
173 const char *pcszUuid;
174 /** DVM volume type. */
175 RTDVMVOLTYPE enmVolType;
176} RTDVMGPTPARTTYPE2VOLTYPE;
177/** Pointer to a MBR FS Type to volume type mapping entry. */
178typedef RTDVMGPTPARTTYPE2VOLTYPE *PRTDVMGPTPARTTYPE2VOLTYPE;
179
180/** Converts a LBA number to the byte offset. */
181#define RTDVM_GPT_LBA2BYTE(lba, disk) ((lba) * (disk)->cbSector)
182/** Converts a Byte offset to the LBA number. */
183#define RTDVM_GPT_BYTE2LBA(lba, disk) ((lba) / (disk)->cbSector)
184
185
186/*********************************************************************************************************************************
187* Global Variables *
188*********************************************************************************************************************************/
189/**
190 * Mapping of partition types to DVM volume types.
191 *
192 * From http://en.wikipedia.org/wiki/GUID_Partition_Table
193 */
194static const RTDVMGPTPARTTYPE2VOLTYPE g_aPartType2DvmVolTypes[] =
195{
196 { "C12A7328-F81F-11D2-BA4B-00A0C93EC93B", RTDVMVOLTYPE_EFI_SYSTEM },
197
198 { "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", RTDVMVOLTYPE_WIN_BASIC },
199 { "E3C9E316-0B5C-4DB8-817D-F92DF00215AE", RTDVMVOLTYPE_WIN_MSR },
200 { "5808C8AA-7E8F-42E0-85D2-E1E90434CFB3", RTDVMVOLTYPE_WIN_LDM_META },
201 { "AF9B60A0-1431-4F62-BC68-3311714A69AD", RTDVMVOLTYPE_WIN_LDM_DATA },
202 { "DE94BBA4-06D1-4D40-A16A-BFD50179D6AC", RTDVMVOLTYPE_WIN_RECOVERY },
203 { "E75CAF8F-F680-4CEE-AFA3-B001E56EFC2D", RTDVMVOLTYPE_WIN_STORAGE_SPACES },
204
205 { "0657FD6D-A4AB-43C4-84E5-0933C84B4F4F", RTDVMVOLTYPE_LINUX_SWAP },
206 { "0FC63DAF-8483-4772-8E79-3D69D8477DE4", RTDVMVOLTYPE_LINUX_NATIVE },
207 { "44479540-F297-41B2-9AF7-D131D5F0458A", RTDVMVOLTYPE_LINUX_NATIVE }, /* x86 root */
208 { "4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709", RTDVMVOLTYPE_LINUX_NATIVE }, /* AMD64 root */
209 { "69DAD710-2CE4-4E3C-B16C-21A1D49ABED3", RTDVMVOLTYPE_LINUX_NATIVE }, /* ARM32 root */
210 { "B921B045-1DF0-41C3-AF44-4C6F280D3FAE", RTDVMVOLTYPE_LINUX_NATIVE }, /* ARM64 root */
211 { "E6D6D379-F507-44C2-A23C-238F2A3DF928", RTDVMVOLTYPE_LINUX_LVM },
212 { "A19D880F-05FC-4D3B-A006-743F0F84911E", RTDVMVOLTYPE_LINUX_SOFTRAID },
213
214 { "83BD6B9D-7F41-11DC-BE0B-001560B84F0F", RTDVMVOLTYPE_FREEBSD }, /* Boot */
215 { "516E7CB4-6ECF-11D6-8FF8-00022D09712B", RTDVMVOLTYPE_FREEBSD }, /* Data */
216 { "516E7CB5-6ECF-11D6-8FF8-00022D09712B", RTDVMVOLTYPE_FREEBSD }, /* Swap */
217 { "516E7CB6-6ECF-11D6-8FF8-00022D09712B", RTDVMVOLTYPE_FREEBSD }, /* UFS */
218 { "516E7CB8-6ECF-11D6-8FF8-00022D09712B", RTDVMVOLTYPE_FREEBSD }, /* Vinum */
219 { "516E7CBA-6ECF-11D6-8FF8-00022D09712B", RTDVMVOLTYPE_FREEBSD }, /* ZFS */
220
221 { "49F48D32-B10E-11DC-B99B-0019D1879648", RTDVMVOLTYPE_NETBSD }, /* Swap */
222 { "49F48D5A-B10E-11DC-B99B-0019D1879648", RTDVMVOLTYPE_NETBSD }, /* FFS */
223 { "49F48D82-B10E-11DC-B99B-0019D1879648", RTDVMVOLTYPE_NETBSD }, /* LFS */
224 { "49F48DAA-B10E-11DC-B99B-0019D1879648", RTDVMVOLTYPE_NETBSD }, /* Raid */
225 { "2DB519C4-B10F-11DC-B99B-0019D1879648", RTDVMVOLTYPE_NETBSD }, /* Concatenated */
226 { "2DB519EC-B10F-11DC-B99B-0019D1879648", RTDVMVOLTYPE_NETBSD }, /* Encrypted */
227
228 { "48465300-0000-11AA-AA11-00306543ECAC", RTDVMVOLTYPE_DARWIN_HFS },
229 { "7C3457EF-0000-11AA-AA11-00306543ECAC", RTDVMVOLTYPE_DARWIN_APFS },
230
231 { "6A82CB45-1DD2-11B2-99A6-080020736631", RTDVMVOLTYPE_SOLARIS }, /* Boot */
232 { "6A85CF4D-1DD2-11B2-99A6-080020736631", RTDVMVOLTYPE_SOLARIS }, /* Root */
233 { "6A87C46F-1DD2-11B2-99A6-080020736631", RTDVMVOLTYPE_SOLARIS }, /* Swap */
234 { "6A8B642B-1DD2-11B2-99A6-080020736631", RTDVMVOLTYPE_SOLARIS }, /* Backup */
235 { "6A898CC3-1DD2-11B2-99A6-080020736631", RTDVMVOLTYPE_SOLARIS }, /* /usr */
236 { "6A8EF2E9-1DD2-11B2-99A6-080020736631", RTDVMVOLTYPE_SOLARIS }, /* /var */
237 { "6A90BA39-1DD2-11B2-99A6-080020736631", RTDVMVOLTYPE_SOLARIS }, /* /home */
238 { "6A9283A5-1DD2-11B2-99A6-080020736631", RTDVMVOLTYPE_SOLARIS }, /* Alternate sector */
239
240 { "37AFFC90-EF7D-4E96-91C3-2D7AE055B174", RTDVMVOLTYPE_IBM_GPFS },
241};
242
243static DECLCALLBACK(int) rtDvmFmtGptProbe(PCRTDVMDISK pDisk, uint32_t *puScore)
244{
245 int rc = VINF_SUCCESS;
246 GPTHDR Hdr;
247
248 *puScore = RTDVM_MATCH_SCORE_UNSUPPORTED;
249
250 if (rtDvmDiskGetSectors(pDisk) >= 2)
251 {
252 /* Read from the disk and check for the signature. */
253 rc = rtDvmDiskRead(pDisk, RTDVM_GPT_LBA2BYTE(1, pDisk), &Hdr, sizeof(GPTHDR));
254 if ( RT_SUCCESS(rc)
255 && !strncmp(&Hdr.abSignature[0], RTDVM_GPT_SIGNATURE, RT_ELEMENTS(Hdr.abSignature))
256 && RT_LE2H_U32(Hdr.u32Revision) == 0x00010000
257 && RT_LE2H_U32(Hdr.cbHeader) == sizeof(GPTHDRREV1))
258 *puScore = RTDVM_MATCH_SCORE_PERFECT;
259 }
260
261 return rc;
262}
263
264static DECLCALLBACK(int) rtDvmFmtGptOpen(PCRTDVMDISK pDisk, PRTDVMFMT phVolMgrFmt)
265{
266 int rc = VINF_SUCCESS;
267 PRTDVMFMTINTERNAL pThis = NULL;
268
269 pThis = (PRTDVMFMTINTERNAL)RTMemAllocZ(sizeof(RTDVMFMTINTERNAL));
270 if (pThis)
271 {
272 pThis->pDisk = pDisk;
273 pThis->cPartitions = 0;
274
275 /* Read the complete GPT header and convert to host endianess. */
276 rc = rtDvmDiskRead(pDisk, RTDVM_GPT_LBA2BYTE(1, pDisk), &pThis->HdrRev1, sizeof(pThis->HdrRev1));
277 if (RT_SUCCESS(rc))
278 {
279 pThis->HdrRev1.Hdr.u32Revision = RT_LE2H_U32(pThis->HdrRev1.Hdr.u32Revision);
280 pThis->HdrRev1.Hdr.cbHeader = RT_LE2H_U32(pThis->HdrRev1.Hdr.cbHeader);
281 pThis->HdrRev1.Hdr.u32Crc = RT_LE2H_U32(pThis->HdrRev1.Hdr.u32Crc);
282 pThis->HdrRev1.u64LbaCurrent = RT_LE2H_U64(pThis->HdrRev1.u64LbaCurrent);
283 pThis->HdrRev1.u64LbaBackup = RT_LE2H_U64(pThis->HdrRev1.u64LbaBackup);
284 pThis->HdrRev1.u64LbaFirstPartition = RT_LE2H_U64(pThis->HdrRev1.u64LbaFirstPartition);
285 pThis->HdrRev1.u64LbaLastPartition = RT_LE2H_U64(pThis->HdrRev1.u64LbaLastPartition);
286 /** @todo Disk UUID */
287 pThis->HdrRev1.u64LbaPartitionEntries = RT_LE2H_U64(pThis->HdrRev1.u64LbaPartitionEntries);
288 pThis->HdrRev1.cPartitionEntries = RT_LE2H_U32(pThis->HdrRev1.cPartitionEntries);
289 pThis->HdrRev1.cbPartitionEntry = RT_LE2H_U32(pThis->HdrRev1.cbPartitionEntry);
290 pThis->HdrRev1.u32CrcPartitionEntries = RT_LE2H_U32(pThis->HdrRev1.u32CrcPartitionEntries);
291
292 if (pThis->HdrRev1.cbPartitionEntry == sizeof(GPTENTRY))
293 {
294 pThis->paGptEntries = (PGPTENTRY)RTMemAllocZ(pThis->HdrRev1.cPartitionEntries * pThis->HdrRev1.cbPartitionEntry);
295 if (pThis->paGptEntries)
296 {
297 rc = rtDvmDiskRead(pDisk, RTDVM_GPT_LBA2BYTE(pThis->HdrRev1.u64LbaPartitionEntries, pDisk),
298 pThis->paGptEntries, pThis->HdrRev1.cPartitionEntries * pThis->HdrRev1.cbPartitionEntry);
299 if (RT_SUCCESS(rc))
300 {
301 /* Count the occupied entries. */
302 for (unsigned i = 0; i < pThis->HdrRev1.cPartitionEntries; i++)
303 if (!RTUuidIsNull(&pThis->paGptEntries[i].UuidType))
304 {
305 /* Convert to host endianess. */
306 /** @todo Uuids */
307 pThis->paGptEntries[i].u64LbaFirst = RT_LE2H_U64(pThis->paGptEntries[i].u64LbaFirst);
308 pThis->paGptEntries[i].u64LbaLast = RT_LE2H_U64(pThis->paGptEntries[i].u64LbaLast);
309 pThis->paGptEntries[i].u64Flags = RT_LE2H_U64(pThis->paGptEntries[i].u64Flags);
310 for (unsigned cwc = 0; cwc < RT_ELEMENTS(pThis->paGptEntries[i].aPartitionName); cwc++)
311 pThis->paGptEntries[i].aPartitionName[cwc] = RT_LE2H_U16(pThis->paGptEntries[i].aPartitionName[cwc]);
312
313 pThis->cPartitions++;
314 }
315 }
316
317 if (RT_FAILURE(rc))
318 RTMemFree(pThis->paGptEntries);
319 }
320 else
321 rc = VERR_NO_MEMORY;
322 }
323 else
324 rc = VERR_NOT_SUPPORTED;
325
326 if (RT_SUCCESS(rc))
327 *phVolMgrFmt = pThis;
328 else
329 RTMemFree(pThis);
330 }
331 }
332 else
333 rc = VERR_NO_MEMORY;
334
335 return rc;
336}
337
338static DECLCALLBACK(int) rtDvmFmtGptInitialize(PCRTDVMDISK pDisk, PRTDVMFMT phVolMgrFmt)
339{
340 NOREF(pDisk); NOREF(phVolMgrFmt);
341 return VERR_NOT_IMPLEMENTED;
342}
343
344static DECLCALLBACK(void) rtDvmFmtGptClose(RTDVMFMT hVolMgrFmt)
345{
346 PRTDVMFMTINTERNAL pThis = hVolMgrFmt;
347
348 pThis->pDisk = NULL;
349 memset(&pThis->HdrRev1, 0, sizeof(pThis->HdrRev1));
350 RTMemFree(pThis->paGptEntries);
351
352 pThis->paGptEntries = NULL;
353 RTMemFree(pThis);
354}
355
356static DECLCALLBACK(int) rtDvmFmtGptQueryRangeUse(RTDVMFMT hVolMgrFmt,
357 uint64_t off, uint64_t cbRange,
358 bool *pfUsed)
359{
360 PRTDVMFMTINTERNAL pThis = hVolMgrFmt;
361
362 NOREF(cbRange);
363
364 if (off < 33*pThis->pDisk->cbSector)
365 *pfUsed = true;
366 else
367 *pfUsed = false;
368
369 return VINF_SUCCESS;
370}
371
372static DECLCALLBACK(uint32_t) rtDvmFmtGptGetValidVolumes(RTDVMFMT hVolMgrFmt)
373{
374 PRTDVMFMTINTERNAL pThis = hVolMgrFmt;
375
376 return pThis->cPartitions;
377}
378
379static DECLCALLBACK(uint32_t) rtDvmFmtGptGetMaxVolumes(RTDVMFMT hVolMgrFmt)
380{
381 PRTDVMFMTINTERNAL pThis = hVolMgrFmt;
382
383 return pThis->HdrRev1.cPartitionEntries;
384}
385
386/**
387 * Creates a new volume.
388 *
389 * @returns IPRT status code.
390 * @param pThis The MBR volume manager data.
391 * @param pGptEntry The GPT entry.
392 * @param idx The index in the partition array.
393 * @param phVolFmt Where to store the volume data on success.
394 */
395static int rtDvmFmtMbrVolumeCreate(PRTDVMFMTINTERNAL pThis, PGPTENTRY pGptEntry,
396 uint32_t idx, PRTDVMVOLUMEFMT phVolFmt)
397{
398 int rc = VINF_SUCCESS;
399 PRTDVMVOLUMEFMTINTERNAL pVol = (PRTDVMVOLUMEFMTINTERNAL)RTMemAllocZ(sizeof(RTDVMVOLUMEFMTINTERNAL));
400
401 if (pVol)
402 {
403 pVol->pVolMgr = pThis;
404 pVol->idxEntry = idx;
405 pVol->pGptEntry = pGptEntry;
406 pVol->offStart = RTDVM_GPT_LBA2BYTE(pGptEntry->u64LbaFirst, pThis->pDisk);
407 pVol->cbVolume = RTDVM_GPT_LBA2BYTE(pGptEntry->u64LbaLast - pGptEntry->u64LbaFirst + 1, pThis->pDisk);
408
409 *phVolFmt = pVol;
410 }
411 else
412 rc = VERR_NO_MEMORY;
413
414 return rc;
415}
416
417static DECLCALLBACK(int) rtDvmFmtGptQueryFirstVolume(RTDVMFMT hVolMgrFmt, PRTDVMVOLUMEFMT phVolFmt)
418{
419 PRTDVMFMTINTERNAL pThis = hVolMgrFmt;
420
421 if (pThis->cPartitions != 0)
422 {
423 PGPTENTRY pGptEntry = &pThis->paGptEntries[0];
424
425 /* Search for the first non empty entry. */
426 for (unsigned i = 0; i < pThis->HdrRev1.cPartitionEntries; i++)
427 {
428 if (!RTUuidIsNull(&pGptEntry->UuidType))
429 return rtDvmFmtMbrVolumeCreate(pThis, pGptEntry, i, phVolFmt);
430 pGptEntry++;
431 }
432 AssertFailed();
433 }
434 return VERR_DVM_MAP_EMPTY;
435}
436
437static DECLCALLBACK(int) rtDvmFmtGptQueryNextVolume(RTDVMFMT hVolMgrFmt, RTDVMVOLUMEFMT hVolFmt, PRTDVMVOLUMEFMT phVolFmtNext)
438{
439 PRTDVMFMTINTERNAL pThis = hVolMgrFmt;
440 PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
441 PGPTENTRY pGptEntry = pVol->pGptEntry + 1;
442
443 for (unsigned i = pVol->idxEntry + 1; i < pThis->HdrRev1.cPartitionEntries; i++)
444 {
445 if (!RTUuidIsNull(&pGptEntry->UuidType))
446 return rtDvmFmtMbrVolumeCreate(pThis, pGptEntry, i, phVolFmtNext);
447 pGptEntry++;
448 }
449
450 return VERR_DVM_MAP_NO_VOLUME;
451}
452
453static DECLCALLBACK(void) rtDvmFmtGptVolumeClose(RTDVMVOLUMEFMT hVolFmt)
454{
455 PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
456
457 pVol->pVolMgr = NULL;
458 pVol->offStart = 0;
459 pVol->cbVolume = 0;
460 pVol->pGptEntry = NULL;
461
462 RTMemFree(pVol);
463}
464
465static DECLCALLBACK(uint64_t) rtDvmFmtGptVolumeGetSize(RTDVMVOLUMEFMT hVolFmt)
466{
467 PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
468
469 return pVol->cbVolume;
470}
471
472static DECLCALLBACK(int) rtDvmFmtGptVolumeQueryName(RTDVMVOLUMEFMT hVolFmt, char **ppszVolName)
473{
474 PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
475
476 *ppszVolName = NULL;
477 return RTUtf16ToUtf8Ex(&pVol->pGptEntry->aPartitionName[0], RT_ELEMENTS(pVol->pGptEntry->aPartitionName),
478 ppszVolName, 0, NULL);
479}
480
481static DECLCALLBACK(RTDVMVOLTYPE) rtDvmFmtGptVolumeGetType(RTDVMVOLUMEFMT hVolFmt)
482{
483 PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
484
485 for (unsigned i = 0; i < RT_ELEMENTS(g_aPartType2DvmVolTypes); i++)
486 if (!RTUuidCompareStr(&pVol->pGptEntry->UuidType, g_aPartType2DvmVolTypes[i].pcszUuid))
487 return g_aPartType2DvmVolTypes[i].enmVolType;
488
489 return RTDVMVOLTYPE_UNKNOWN;
490}
491
492static DECLCALLBACK(uint64_t) rtDvmFmtGptVolumeGetFlags(RTDVMVOLUMEFMT hVolFmt)
493{
494 NOREF(hVolFmt); /* No supported flags for now. */
495 return 0;
496}
497
498static DECLCALLBACK(bool) rtDvmFmtGptVolumeIsRangeIntersecting(RTDVMVOLUMEFMT hVolFmt,
499 uint64_t offStart, size_t cbRange,
500 uint64_t *poffVol,
501 uint64_t *pcbIntersect)
502{
503 PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
504
505 if (RTDVM_RANGE_IS_INTERSECTING(pVol->offStart, pVol->cbVolume, offStart))
506 {
507 *poffVol = offStart - pVol->offStart;
508 *pcbIntersect = RT_MIN(cbRange, pVol->offStart + pVol->cbVolume - offStart);
509 return true;
510 }
511 return false;
512}
513
514static DECLCALLBACK(int) rtDvmFmtGptVolumeRead(RTDVMVOLUMEFMT hVolFmt, uint64_t off, void *pvBuf, size_t cbRead)
515{
516 PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
517 AssertReturn(off + cbRead <= pVol->cbVolume, VERR_INVALID_PARAMETER);
518
519 return rtDvmDiskRead(pVol->pVolMgr->pDisk, pVol->offStart + off, pvBuf, cbRead);
520}
521
522static DECLCALLBACK(int) rtDvmFmtGptVolumeWrite(RTDVMVOLUMEFMT hVolFmt, uint64_t off, const void *pvBuf, size_t cbWrite)
523{
524 PRTDVMVOLUMEFMTINTERNAL pVol = hVolFmt;
525 AssertReturn(off + cbWrite <= pVol->cbVolume, VERR_INVALID_PARAMETER);
526
527 return rtDvmDiskWrite(pVol->pVolMgr->pDisk, pVol->offStart + off, pvBuf, cbWrite);
528}
529
530RTDVMFMTOPS g_rtDvmFmtGpt =
531{
532 /* pszFmt */
533 "GPT",
534 /* enmFormat, */
535 RTDVMFORMATTYPE_GPT,
536 /* pfnProbe */
537 rtDvmFmtGptProbe,
538 /* pfnOpen */
539 rtDvmFmtGptOpen,
540 /* pfnInitialize */
541 rtDvmFmtGptInitialize,
542 /* pfnClose */
543 rtDvmFmtGptClose,
544 /* pfnQueryRangeUse */
545 rtDvmFmtGptQueryRangeUse,
546 /* pfnGetValidVolumes */
547 rtDvmFmtGptGetValidVolumes,
548 /* pfnGetMaxVolumes */
549 rtDvmFmtGptGetMaxVolumes,
550 /* pfnQueryFirstVolume */
551 rtDvmFmtGptQueryFirstVolume,
552 /* pfnQueryNextVolume */
553 rtDvmFmtGptQueryNextVolume,
554 /* pfnVolumeClose */
555 rtDvmFmtGptVolumeClose,
556 /* pfnVolumeGetSize */
557 rtDvmFmtGptVolumeGetSize,
558 /* pfnVolumeQueryName */
559 rtDvmFmtGptVolumeQueryName,
560 /* pfnVolumeGetType */
561 rtDvmFmtGptVolumeGetType,
562 /* pfnVolumeGetFlags */
563 rtDvmFmtGptVolumeGetFlags,
564 /* pfnVolumeIsRangeIntersecting */
565 rtDvmFmtGptVolumeIsRangeIntersecting,
566 /* pfnVolumeRead */
567 rtDvmFmtGptVolumeRead,
568 /* pfnVolumeWrite */
569 rtDvmFmtGptVolumeWrite
570};
571
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