ntfs.h@ 83941

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1	/* $Id: ntfs.h 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* IPRT, NT File System (NTFS).
4	*/
5
6	/*
7	* Copyright (C) 2017-2020 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	#ifndef IPRT_INCLUDED_formats_ntfs_h
28	#define IPRT_INCLUDED_formats_ntfs_h
29	#ifndef RT_WITHOUT_PRAGMA_ONCE
30	# pragma once
31	#endif
32
33	#include <iprt/formats/fat.h>
34
35
36	/** @defgroup grp_rt_formats_ntfs NT File System (NTFS) structures and definitions
37	* @ingroup grp_rt_formats
38	* @{
39	*/
40
41	/** Value of the FATBOOTSECTOR::achOemName for an NTFS file system. */
42	#define NTFS_OEM_ID_MAGIC "NTFS "
43
44
45	/** @name NTFS_MFT_IDX_XXX - Predefined MFT indexes.
46	* @{ */
47	#define NTFS_MFT_IDX_MFT 0 /*< The MFT itself. /
48	#define NTFS_MFT_IDX_MFT_MIRROR 1 /*< Mirror MFT (partial?). /
49	#define NTFS_MFT_IDX_LOG_FILE 2 /*< Journalling log. /
50	#define NTFS_MFT_IDX_VOLUME 3 /*< Volume attributes. /
51	#define NTFS_MFT_IDX_ATTRIB_DEF 4 /*< Attribute definitions. /
52	#define NTFS_MFT_IDX_ROOT 5 /*< The root directory. /
53	#define NTFS_MFT_IDX_BITMAP 6 /*< Allocation bitmap. /
54	#define NTFS_MFT_IDX_BOOT 7 /*< The boot sector. /
55	#define NTFS_MFT_IDX_BAD_CLUSTER 8 /*< Bad cluster table. /
56	#define NTFS_MFT_IDX_SECURITY 9 /*< Shared security descriptors (w2k and later). /
57	#define NTFS_MFT_IDX_UP_CASE 10 /*< Unicode upper case table. /
58	#define NTFS_MFT_IDX_EXTEND 11 /*< Directory containing further system files. /
59	#define NTFS_MFT_IDX_FIRST_USER 16 /*< The first user file. /
60	/** @} */
61
62	/**
63	* NTFS MFT record reference.
64	*/
65	typedef union NTFSMFTREF
66	{
67	/** unsigned 64-bit view. */
68	uint64_t u64;
69	/** unsigned 32-bit view. */
70	uint32_t au32[2];
71	/** unsigned 16-bit view. */
72	uint16_t au16[4];
73
74	/** Structured view. */
75	struct
76	{
77	/** Index of the master file table record. */
78	RT_GCC_EXTENSION uint64_t idxMft : 48;
79	/** MFT record reuse sequence number (for catching dangling references). */
80	RT_GCC_EXTENSION uint64_t uRecReuseSeqNo : 16;
81	} s;
82	} NTFSMFTREF;
83	AssertCompileSize(NTFSMFTREF, 8);
84	/** Pointer to a NTFS MFT record reference. */
85	typedef NTFSMFTREF *PNTFSMFTREF;
86	/** Pointer to a const NTFS MFT record reference. */
87	typedef NTFSMFTREF const *PCNTFSMFTREF;
88
89	/** @name NTFSMFTREF_GET_IDX
90	* Gets the MFT index number (host endian) from a MFT reference. */
91	/** @name NTFSMFTREF_GET_SEQ
92	* Gets the MFT reuse sequence number (host endian) from a MFT reference. */
93	/** @name NTFSMFTREF_SET_IDX
94	* Sets the MFT index number of a MFT reference. */
95	/** @name NTFSMFTREF_SET_SEQ
96	* Sets the MFT reuse sequence number of a MFT reference. */
97	/** @name NTFSMFTREF_SET
98	* Sets the values of a MFT reference. */
99	#ifdef RT_LITTLE_ENDIAN
100	# define NTFSMFTREF_GET_IDX(a_pMftRef) ((a_pMftRef)->s.idxMft)
101	# define NTFSMFTREF_GET_SEQ(a_pMftRef) ((a_pMftRef)->s.uRecReuseSeqNo)
102	# define NTFSMFTREF_SET_SEQ(a_pMftRef, a_uValue) do { (a_pMftRef)->s.uRecReuseSeqNo = (a_uValue); } while (0)
103	# define NTFSMFTREF_SET_IDX(a_pMftRef, a_uValue) do { (a_pMftRef)->s.idxMft = (a_uValue); } while (0)
104	# define NTFSMFTREF_SET(a_pMftRef, a_idx, a_uSeq) \
105	do { \
106	(a_pMftRef)->s.idxMft = (a_idx); \
107	(a_pMftRef)->s.uRecReuseSeqNo = (a_uSeq); \
108	} while (0)
109	#else
110	# define NTFSMFTREF_GET_IDX(a_pMftRef) (RT_LE2H_U64((a_pMftRef)->u64) & UINT64_C(0x0000ffffffffffff))
111	# define NTFSMFTREF_GET_SEQ(a_pMftRef) RT_LE2H_U16((uint16_t)(a_pMftRef)->u64)
112	# define NTFSMFTREF_SET_SEQ(a_pMftRef, a_uValue) do { (a_pMftRef)->au16[3] = RT_H2LE_U16(a_uValue); } while (0)
113	# define NTFSMFTREF_SET_IDX(a_pMftRef, a_uValue) \
114	do { \
115	(a_pMftRef)->au32[0] = RT_H2LE_U32((uint32_t)(a_uValue)); \
116	(a_pMftRef)->au16[2] = RT_H2LE_U16((uint16_t)((a_uValue) >> 32)); \
117	} while (0)
118	# define NTFSMFTREF_SET(a_pMftRef, a_idx, a_uSeq) \
119	do { \
120	(a_pMftRef)->au32[0] = RT_H2LE_U32((uint32_t)(a_idx)); \
121	(a_pMftRef)->au16[2] = RT_H2LE_U16((uint16_t)((a_idx) >> 32)); \
122	(a_pMftRef)->au16[3] = RT_H2LE_U16((uint16_t)(a_uSeq)); \
123	} while (0)
124	#endif
125	/** Check that the reference is zero. */
126	#define NTFSMFTREF_IS_ZERO(a_pMftRef) ((a_pMftRef)->u64 == 0)
127
128
129	/**
130	* NTFS record header.
131	*/
132	typedef struct NTFSRECHDR
133	{
134	/** Magic number (usually ASCII). */
135	uint32_t uMagic;
136	/** Offset of the update sequence array from the start of the record. */
137	uint16_t offUpdateSeqArray;
138	/** Number of entries in the update sequence array. (uint16_t sized entries) */
139	uint16_t cUpdateSeqEntries;
140	} NTFSRECHDR;
141	AssertCompileSize(NTFSRECHDR, 8);
142	/** Pointer to a NTFS record header. */
143	typedef NTFSRECHDR *PNTFSRECHDR;
144	/** Pointer to a const NTFS record header. */
145	typedef NTFSRECHDR const *PCNTFSRECHDR;
146
147	/** The multi-sector update sequence stride.
148	* @see https://msdn.microsoft.com/en-us/library/bb470212%28v=vs.85%29.aspx
149	* @see NTFSRECHDR::offUpdateSeqArray, NTFSRECHDR::cUpdateSeqEntries
150	*/
151	#define NTFS_MULTI_SECTOR_STRIDE 512
152
153
154	/**
155	* NTFS file record (in the MFT).
156	*/
157	typedef struct NTFSRECFILE
158	{
159	/** 0x00: Header with NTFSREC_MAGIC_FILE. */
160	NTFSRECHDR Hdr;
161	/** 0x08: Log file sequence number. */
162	uint64_t uLsn;
163	/** 0x10: MFT record reuse sequence number (for dangling MFT references). */
164	uint16_t uRecReuseSeqNo;
165	/** 0x12: Number of hard links. */
166	uint16_t cLinks;
167	/** 0x14: Offset of the first attribute (relative to start of record). */
168	uint16_t offFirstAttrib;
169	/** 0x16: Record flags (NTFSRECFILE_F_XXX). */
170	uint16_t fFlags;
171	/** 0x18: Number of byte in use in this MFT record. */
172	uint32_t cbRecUsed;
173	/** 0x1c: The MFT record size. */
174	uint32_t cbRecSize;
175	/** 0x20: Reference to the base MFT record. */
176	NTFSMFTREF BaseMftRec;
177	/** 0x28: Next attribute instance number. */
178	uint16_t idNextAttrib;
179	/** 0x2a: Padding if NTFS 3.1+, update sequence array if older. */
180	uint16_t uPaddingOrUsa;
181	/** 0x2c: MFT index of this record. */
182	uint32_t idxMftSelf;
183	} NTFSRECFILE;
184	AssertCompileSize(NTFSRECFILE, 0x30);
185	/** Pointer to a NTFS file record. */
186	typedef NTFSRECFILE *PNTFSRECFILE;
187	/** Pointer to a const NTFS file record. */
188	typedef NTFSRECFILE const *PCNTFSRECFILE;
189
190
191	/** NTFS 'FILE' record magic value. */
192	#define NTFSREC_MAGIC_FILE RT_H2LE_U32_C(UINT32_C(0x454c4946))
193
194	/** @name NTFSRECFILE_F_XXX - NTFSRECFILE::fFlags.
195	* @{ */
196	/** MFT record is in use. */
197	#define NTFSRECFILE_F_IN_USE RT_H2LE_U16_C(UINT16_C(0x0001))
198	/** Directory record. */
199	#define NTFSRECFILE_F_DIRECTORY RT_H2LE_U16_C(UINT16_C(0x0002))
200	/** @} */
201
202
203	/** @name NTFS_AT_XXX - Attribute types
204	* @{ */
205	#define NTFS_AT_UNUSED RT_H2LE_U32_C(UINT32_C(0x00000000))
206	/** NTFSATSTDINFO */
207	#define NTFS_AT_STANDARD_INFORMATION RT_H2LE_U32_C(UINT32_C(0x00000010))
208	/** NTFSATLISTENTRY */
209	#define NTFS_AT_ATTRIBUTE_LIST RT_H2LE_U32_C(UINT32_C(0x00000020))
210	/** NTFSATFILENAME */
211	#define NTFS_AT_FILENAME RT_H2LE_U32_C(UINT32_C(0x00000030))
212	#define NTFS_AT_OBJECT_ID RT_H2LE_U32_C(UINT32_C(0x00000040))
213	#define NTFS_AT_SECURITY_DESCRIPTOR RT_H2LE_U32_C(UINT32_C(0x00000050))
214	#define NTFS_AT_VOLUME_NAME RT_H2LE_U32_C(UINT32_C(0x00000060))
215	/** NTFSATVOLUMEINFO */
216	#define NTFS_AT_VOLUME_INFORMATION RT_H2LE_U32_C(UINT32_C(0x00000070))
217	#define NTFS_AT_DATA RT_H2LE_U32_C(UINT32_C(0x00000080))
218	/** NTFSATINDEXROOT */
219	#define NTFS_AT_INDEX_ROOT RT_H2LE_U32_C(UINT32_C(0x00000090))
220	#define NTFS_AT_INDEX_ALLOCATION RT_H2LE_U32_C(UINT32_C(0x000000a0))
221	#define NTFS_AT_BITMAP RT_H2LE_U32_C(UINT32_C(0x000000b0))
222	#define NTFS_AT_REPARSE_POINT RT_H2LE_U32_C(UINT32_C(0x000000c0))
223	#define NTFS_AT_EA_INFORMATION RT_H2LE_U32_C(UINT32_C(0x000000d0))
224	#define NTFS_AT_EA RT_H2LE_U32_C(UINT32_C(0x000000e0))
225	#define NTFS_AT_PROPERTY_SET RT_H2LE_U32_C(UINT32_C(0x000000f0))
226	#define NTFS_AT_LOGGED_UTILITY_STREAM RT_H2LE_U32_C(UINT32_C(0x00000100))
227	#define NTFS_AT_FIRST_USER_DEFINED RT_H2LE_U32_C(UINT32_C(0x00001000))
228	#define NTFS_AT_END RT_H2LE_U32_C(UINT32_C(0xffffffff))
229	/** @} */
230
231	/** @name NTFS_AF_XXX - Attribute flags.
232	* @{ */
233	#define NTFS_AF_COMPR_FMT_NONE RT_H2LE_U16_C(UINT16_C(0x0000))
234	/** See RtlCompressBuffer / COMPRESSION_FORMAT_LZNT1. */
235	#define NTFS_AF_COMPR_FMT_LZNT1 RT_H2LE_U16_C(UINT16_C(0x0001))
236	/** See RtlCompressBuffer / COMPRESSION_FORMAT_XPRESS_HUFF. */
237	#define NTFS_AF_COMPR_FMT_XPRESS RT_H2LE_U16_C(UINT16_C(0x0002))
238	/** See RtlCompressBuffer / COMPRESSION_FORMAT_XPRESS_HUFF. */
239	#define NTFS_AF_COMPR_FMT_XPRESS_HUFF RT_H2LE_U16_C(UINT16_C(0x0003))
240	#define NTFS_AF_COMPR_FMT_MASK RT_H2LE_U16_C(UINT16_C(0x00ff))
241	#define NTFS_AF_ENCRYPTED RT_H2LE_U16_C(UINT16_C(0x4000))
242	#define NTFS_AF_SPARSE RT_H2LE_U16_C(UINT16_C(0x8000))
243	/** @} */
244
245	/**
246	* NTFS attribute header.
247	*
248	* This has three forms:
249	* - Resident
250	* - Non-resident, no compression
251	* - Non-resident, compressed.
252	*
253	* Each form translates to a different header size.
254	*/
255	typedef struct NTFSATTRIBHDR
256	{
257	/** 0x00: Attribute type (NTFS_AT_XXX). */
258	uint32_t uAttrType;
259	/** 0x04: Length of this attribute (resident part). */
260	uint32_t cbAttrib;
261	/** 0x08: Set (1) if non-resident attribute, 0 if resident. */
262	uint8_t fNonResident;
263	/** 0x09: Attribute name length (can be zero). */
264	uint8_t cwcName;
265	/** 0x0a: Offset of the name string (relative to the start of this header). */
266	uint16_t offName;
267	/** 0x0c: NTFS_AF_XXX. */
268	uint16_t fFlags;
269	/** 0x0e: Attribute instance number. Unique within the MFT record. */
270	uint16_t idAttrib;
271	/** 0x10: Data depending on the fNonResident member value. */
272	union
273	{
274	/** Resident attributes. */
275	struct
276	{
277	/** 0x10: Attribute value length. */
278	uint32_t cbValue;
279	/** 0x14: Offset of the value (relative to the start of this header). */
280	uint16_t offValue;
281	/** 0x16: NTFS_RES_AF_XXX. */
282	uint8_t fFlags;
283	/** 0x17: Reserved. */
284	uint8_t bReserved;
285	} Res;
286
287	/** Non-resident attributes. */
288	struct
289	{
290	/** 0x10: The first virtual cluster containing data.
291	*
292	* This is mainly for internal checking when the run list doesn't fit in one
293	* MFT record. It can also be used to avoid recording a sparse run at the
294	* beginning of the data covered by this attribute record. */
295	int64_t iVcnFirst;
296	/** 0x18: The last virtual cluster containing data (inclusive). */
297	int64_t iVcnLast;
298	/** 0x20: Offset of the mapping pair program. This program gives us a mapping
299	* between VNC and LCN for the attribute value. */
300	uint16_t offMappingPairs;
301	/** 0x22: Power of two compression unit size in clusters (cbCluster << uCompessionUnit).
302	* Zero means uncompressed. */
303	uint8_t uCompressionUnit;
304	/** 0x23: Reserved */
305	uint8_t abReserved[5];
306	/** 0x28: Allocated size (rouneded to cluster).
307	* @note Only set in the first attribute record (iVcnFirst == 0). */
308	int64_t cbAllocated;
309	/** 0x30: The exact length of the data.
310	* @note Only set in the first attribute record (iVcnFirst == 0). */
311	int64_t cbData;
312	/** 0x38: The length of the initialized data. (Not necessarily
313	* rounded up to cluster size.)
314	* @note Only set in the first attribute record (iVcnFirst == 0). */
315	int64_t cbInitialized;
316	/** 0x40: Compressed size if compressed, otherwise absent. */
317	int64_t cbCompressed;
318	} NonRes;
319	} u;
320	} NTFSATTRIBHDR;
321	AssertCompileSize(NTFSATTRIBHDR, 0x48);
322	AssertCompileMemberOffset(NTFSATTRIBHDR, u.Res, 0x10);
323	AssertCompileMemberOffset(NTFSATTRIBHDR, u.Res.bReserved, 0x17);
324	AssertCompileMemberOffset(NTFSATTRIBHDR, u.NonRes, 0x10);
325	AssertCompileMemberOffset(NTFSATTRIBHDR, u.NonRes.cbCompressed, 0x40);
326	/** Pointer to a NTFS attribute header. */
327	typedef NTFSATTRIBHDR *PNTFSATTRIBHDR;
328	/** Pointer to a const NTFS attribute header. */
329	typedef NTFSATTRIBHDR const *PCNTFSATTRIBHDR;
330
331	/** @name NTFSATTRIBHDR_SIZE_XXX - Attribute header sizes.
332	* @{ */
333	/** Attribute header size for resident values. */
334	#define NTFSATTRIBHDR_SIZE_RESIDENT (0x18)
335	/** Attribute header size for uncompressed non-resident values. */
336	#define NTFSATTRIBHDR_SIZE_NONRES_UNCOMPRESSED (0x40)
337	/** Attribute header size for compressed non-resident values. */
338	#define NTFSATTRIBHDR_SIZE_NONRES_COMPRESSED (0x48)
339	/** @} */
340
341	/** Get the pointer to the embedded name from an attribute.
342	* @note ASSUMES the caller check that there is a name. */
343	#define NTFSATTRIBHDR_GET_NAME(a_pAttrHdr) ( (PRTUTF16)((uintptr_t)(a_pAttrHdr) + (a_pAttrHdr)->offName) )
344
345	/** Get the pointer to resident value.
346	* @note ASSUMES the caller checks that it's resident and valid. */
347	#define NTFSATTRIBHDR_GET_RES_VALUE_PTR(a_pAttrHdr) ( (uint8_t *)(a_pAttrHdr) + (a_pAttrHdr)->u.Res.offValue )
348
349
350	/** @name NTFS_RES_AF_XXX
351	* @{ */
352	/** Attribute is referenced in an index. */
353	#define NTFS_RES_AF_INDEXED UINT8_C(0x01)
354	/** @} */
355
356	/**
357	* Attribute list entry (NTFS_AT_ATTRIBUTE_LIST).
358	*
359	* This is used to deal with a file having attributes in more than one MFT
360	* record. A prominent example is an fragment file (unnamed data attribute)
361	* which mapping pairs doesn't fit in a single MFT record.
362	*
363	* This attribute can be non-resident, however it's mapping pair program must
364	* fit in the base MFT record.
365	*/
366	typedef struct NTFSATLISTENTRY
367	{
368	/** 0x00: Attribute type (NTFS_AT_XXX). */
369	uint32_t uAttrType;
370	/** 0x04: Length of this entry. */
371	uint16_t cbEntry;
372	/** 0x06: Attribute name length (zero if none). */
373	uint8_t cwcName;
374	/** 0x07: Name offset. */
375	uint8_t offName;
376	/** 0x08: The first VNC for this part of the attribute value. */
377	int64_t iVcnFirst;
378	/** 0x10: The MFT record holding the actual attribute. */
379	NTFSMFTREF InMftRec;
380	/** 0x18: Attribute instance number. Unique within the MFT record. */
381	uint16_t idAttrib;
382	/** 0x1a: Maybe where the attribute name starts. */
383	RTUTF16 wszName[RT_FLEXIBLE_ARRAY];
384	} NTFSATLISTENTRY;
385	AssertCompileMemberOffset(NTFSATLISTENTRY, idAttrib, 0x18);
386	/** Pointer to a NTFS attribute list entry. */
387	typedef NTFSATLISTENTRY *PNTFSATLISTENTRY;
388	/** Pointer to a const NTFS attribute list entry. */
389	typedef NTFSATLISTENTRY const *PCNTFSATLISTENTRY;
390
391	/** Unaligned minimum entry size (no name). */
392	#define NTFSATLISTENTRY_SIZE_MINIMAL 0x1a
393
394
395
396	/**
397	* NTFS standard file info attribute (NTFS_AT_STANDARD_INFORMATION).
398	*/
399	typedef struct NTFSATSTDINFO
400	{
401	/** 0x00: Creation timestamp. */
402	int64_t iCreationTime;
403	/** 0x08: Last data modification timestamp. */
404	int64_t iLastDataModTime;
405	/** 0x10: Last MFT record modification timestamp. */
406	int64_t iLastMftModTime;
407	/** 0x18: Last access timestamp. */
408	int64_t iLastAccessTime;
409	/** 0x20: File attributes. */
410	uint32_t fFileAttribs;
411	/** 0x24: Maximum number of file versions allowed.
412	* @note NTFS 3.x, padding in 1.2 */
413	uint32_t cMaxFileVersions;
414	/** 0x28: Current file version number.
415	* @note NTFS 3.x, padding in 1.2 */
416	uint32_t uFileVersion;
417	/** 0x2c: Class ID (whatever that is).
418	* @note NTFS 3.x, padding in 1.2 */
419	uint32_t idClass;
420	/** 0x30: Owner ID.
421	* Translated via $Q index in NTFS_MFT_IDX_EXTENDED/$Quota.
422	* @note NTFS 3.x, not present in 1.2 */
423	uint32_t idOwner;
424	/** 0x34: Security ID. Translated via $SII index and $SDS data stream in
425	* NTFS_MFT_IDX_SECURITY.
426	* @note NTFS 3.x, not present in 1.2 */
427	uint32_t idSecurity;
428	/** 0x38: Total quota charged for this file.
429	* @note NTFS 3.x, not present in 1.2 */
430	uint64_t cbQuotaChared;
431	/** 0x40: Last update sequence number, index into $UsnJrnl.
432	* @note NTFS 3.x, not present in 1.2 */
433	uint64_t idxUpdateSequence;
434	} NTFSATSTDINFO;
435	AssertCompileSize(NTFSATSTDINFO, 0x48);
436	/** Pointer to NTFS standard file info. */
437	typedef NTFSATSTDINFO *PNTFSATSTDINFO;
438	/** Pointer to const NTFS standard file info. */
439	typedef NTFSATSTDINFO const *PCNTFSATSTDINFO;
440
441	/** The size of NTFSATSTDINFO in NTFS v1.2 and earlier. */
442	#define NTFSATSTDINFO_SIZE_NTFS_V12 (0x30)
443
444	/** @name NTFS_FA_XXX - NTFS file attributes (host endian).
445	* @{ */
446	#define NTFS_FA_READONLY UINT32_C(0x00000001)
447	#define NTFS_FA_HIDDEN UINT32_C(0x00000002)
448	#define NTFS_FA_SYSTEM UINT32_C(0x00000004)
449	#define NTFS_FA_DIRECTORY UINT32_C(0x00000010)
450	#define NTFS_FA_ARCHIVE UINT32_C(0x00000020)
451	#define NTFS_FA_DEVICE UINT32_C(0x00000040)
452	#define NTFS_FA_NORMAL UINT32_C(0x00000080)
453	#define NTFS_FA_TEMPORARY UINT32_C(0x00000100)
454	#define NTFS_FA_SPARSE_FILE UINT32_C(0x00000200)
455	#define NTFS_FA_REPARSE_POINT UINT32_C(0x00000400)
456	#define NTFS_FA_COMPRESSED UINT32_C(0x00000800)
457	#define NTFS_FA_OFFLINE UINT32_C(0x00001000)
458	#define NTFS_FA_NOT_CONTENT_INDEXED UINT32_C(0x00002000)
459	#define NTFS_FA_ENCRYPTED UINT32_C(0x00004000)
460	#define NTFS_FA_VALID_FLAGS UINT32_C(0x00007fb7)
461	#define NTFS_FA_VALID_SET_FLAGS UINT32_C(0x000031a7)
462	#define NTFS_FA_DUP_FILE_NAME_INDEX_PRESENT UINT32_C(0x10000000) /*< This means directory apparently. /
463	#define NTFS_FA_DUP_VIEW_INDEX_PRESENT UINT32_C(0x20000000) /*< ?? /
464	/** @} */
465
466
467
468	/**
469	* NTFS filename attribute (NTFS_AT_FILENAME).
470	*/
471	typedef struct NTFSATFILENAME
472	{
473	/** 0x00: The parent directory MFT record. */
474	NTFSMFTREF ParentDirMftRec;
475	/** 0x08: Creation timestamp. */
476	int64_t iCreationTime;
477	/** 0x10: Last data modification timestamp. */
478	int64_t iLastDataModTime;
479	/** 0x18: Last MFT record modification timestamp. */
480	int64_t iLastMftModTime;
481	/** 0x20: Last access timestamp. */
482	int64_t iLastAccessTime;
483	/** 0x28: Allocated disk space for the unnamed data attribute. */
484	int64_t cbAllocated;
485	/** 0x30: Actual size of unnamed data attribute. */
486	int64_t cbData;
487	/** 0x38: File attributes (NTFS_FA_XXX). */
488	uint32_t fFileAttribs;
489	union
490	{
491	/** 0x3c: Packed EA length. */
492	uint16_t cbPackedEas;
493	/** 0x3c: Reparse tag, if no EAs. */
494	uint32_t uReparseTag;
495	} u;
496	/** 0x40: Filename length in unicode chars. */
497	uint8_t cwcFilename;
498	/** 0x41: Filename type (NTFS_FILENAME_T_XXX). */
499	uint8_t fFilenameType;
500	/** 0x42: The filename. */
501	RTUTF16 wszFilename[RT_FLEXIBLE_ARRAY];
502	} NTFSATFILENAME;
503	AssertCompileMemberOffset(NTFSATFILENAME, cbData, 0x30);
504	AssertCompileMemberOffset(NTFSATFILENAME, u.cbPackedEas, 0x3c);
505	AssertCompileMemberOffset(NTFSATFILENAME, u.uReparseTag, 0x3c);
506	AssertCompileMemberOffset(NTFSATFILENAME, wszFilename, 0x42);
507	/** Pointer to a NTFS filename attribute. */
508	typedef NTFSATFILENAME *PNTFSATFILENAME;
509	/** Pointer to a const NTFS filename attribute. */
510	typedef NTFSATFILENAME const *PCNTFSATFILENAME;
511
512	/** @name NTFS_FILENAME_T_XXX - filename types
513	* @{ */
514	#define NTFS_FILENAME_T_POSIX 0
515	#define NTFS_FILENAME_T_WINDOWS 1
516	#define NTFS_FILENAME_T_DOS 2
517	#define NTFS_FILENAME_T_WINDOWS_AND_DSO 3
518	/** @} */
519
520
521	/**
522	* NTFS volume information (NTFS_AT_VOLUME_INFORMATION).
523	*
524	* This is found in the special NTFS_MFT_IDX_VOLUME file.
525	*/
526	typedef struct NTFSATVOLUMEINFO
527	{
528	/** 0x00: Reserved bytes. */
529	uint8_t abReserved[8];
530	/** 0x08: Major NTFS version number. */
531	uint8_t uMajorVersion;
532	/** 0x09: Minor NTFS version number. */
533	uint8_t uMinorVersion;
534	/** 0x0a: Volume flags (NTFS_VOLUME_F_XXX) */
535	uint16_t fFlags;
536	} NTFSATVOLUMEINFO;
537	AssertCompileSize(NTFSATVOLUMEINFO, 12);
538	/** Pointer to NTFS volume information. */
539	typedef NTFSATVOLUMEINFO *PNTFSATVOLUMEINFO;
540	/** Pointer to const NTFS volume information. */
541	typedef NTFSATVOLUMEINFO const *PCNTFSATVOLUMEINFO;
542
543	/** @name NTFS_VOLUME_F_XXX
544	* @{ */
545	#define NTFS_VOLUME_F_DIRTY RT_H2LE_U16_C(0x0001) /*< Volume is dirty. /
546	#define NTFS_VOLUME_F_RESIZE_LOG_FILE RT_H2LE_U16_C(0x0002) /*< /
547	#define NTFS_VOLUME_F_UPGRADE_ON_MOUNT RT_H2LE_U16_C(0x0004) /*< /
548	#define NTFS_VOLUME_F_MOUNTED_ON_NT4 RT_H2LE_U16_C(0x0008) /*< /
549	#define NTFS_VOLUME_F_DELETE_USN_UNDERWAY RT_H2LE_U16_C(0x0010) /*< /
550	#define NTFS_VOLUME_F_REPAIR_OBJECT_ID RT_H2LE_U16_C(0x0020) /*< /
551	#define NTFS_VOLUME_F_CHKDSK_UNDERWAY RT_H2LE_U16_C(0x4000) /*< /
552	#define NTFS_VOLUME_F_MODIFIED_BY_CHKDSK RT_H2LE_U16_C(0x8000) /*< /
553
554	#define NTFS_VOLUME_F_KNOWN_MASK RT_H2LE_U16_C(0xc03f)
555	#define NTFS_VOLUME_F_MOUNT_READONLY_MASK RT_H2LE_U16_C(0xc027)
556	/** @} */
557
558
559	/** The attribute name used by the index attributes on NTFS directories,
560	* ASCII stirng variant. */
561	#define NTFS_DIR_ATTRIBUTE_NAME "$I30"
562
563	/**
564	* NTFS index header.
565	*
566	* This is used by NTFSATINDEXROOT and NTFSATINDEXALLOC as a prelude to the
567	* sequence of entries in a node.
568	*/
569	typedef struct NTFSINDEXHDR
570	{
571	/** 0x00: Offset of the first entry relative to this header. */
572	uint32_t offFirstEntry;
573	/** 0x04: Current index size in bytes, including this header. */
574	uint32_t cbUsed;
575	/** 0x08: Number of bytes allocated for the index (including this header). */
576	uint32_t cbAllocated;
577	/** 0x0c: Flags (NTFSINDEXHDR_F_XXX). */
578	uint8_t fFlags;
579	/** 0x0d: Reserved bytes. */
580	uint8_t abReserved[3];
581	/* NTFSIDXENTRYHDR sequence typically follows here */
582	} NTFSINDEXHDR;
583	AssertCompileSize(NTFSINDEXHDR, 16);
584	/** Pointer to a NTFS index header. */
585	typedef NTFSINDEXHDR *PNTFSINDEXHDR;
586	/** Pointer to a const NTFS index header. */
587	typedef NTFSINDEXHDR const *PCNTFSINDEXHDR;
588
589	/** @name NTFSINDEXHDR_F_XXX
590	* @{ */
591	/** An internal node (as opposed to a leaf node if clear).
592	* This means that the entries will have trailing node references (VCN). */
593	#define NTFSINDEXHDR_F_INTERNAL UINT8_C(0x01)
594	/** @} */
595
596	/** Gets the pointer to the first entry header for an index. */
597	#define NTFSINDEXHDR_GET_FIRST_ENTRY(a_pIndexHdr) \
598	( (PNTFSIDXENTRYHDR)((uint8_t *)(a_pIndexHdr) + RT_LE2H_U32((a_pIndexHdr)->offFirstEntry)) )
599
600
601	/**
602	* NTFS index root node (NTFS_AT_INDEX_ROOT).
603	*
604	* This is a generic index structure, but is most prominently used for
605	* implementating directories. The index is structured like B-tree, meaning
606	* each node contains multiple entries, and each entry contains data regardless
607	* of whether it's a leaf node or not.
608	*
609	* The index is sorted in ascending order according to the collation rules
610	* defined by the root node (NTFSATINDEXROOT::uCollationRules, see also (see
611	* NTFS_COLLATION_XXX).
612	*
613	* @note The root directory contains a '.' entry, others don't.
614	*/
615	typedef struct NTFSATINDEXROOT
616	{
617	/** 0x00: The index type (NTFSATINDEXROOT_TYPE_XXX). */
618	uint32_t uType;
619	/** 0x04: The sorting rules to use (NTFS_COLLATION_XXX). */
620	uint32_t uCollationRules;
621	/** 0x08: Number of bytes in
622	* Index node size (in bytes). */
623	uint32_t cbIndexNode;
624	/** 0x0c: Number of node addresses per node.
625	* This sounds weird right? A subnode is generally addressed as a virtual
626	* cluster when cbIndexNode >= cbCluster, but when clusters are large NTFS uses
627	* 512 bytes chunks.
628	*
629	* (You would've thought it would be simpler to just use cbIndexNode as the
630	* addressing unit, maybe storing the log2 here to avoid a ffs call.) */
631	uint8_t cAddressesPerIndexNode;
632	/** 0x0d: Reserved padding or something. */
633	uint8_t abReserved[3];
634	/** 0x10: Index header detailing the entries that follows. */
635	NTFSINDEXHDR Hdr;
636	/* 0x20: NTFSIDXENTRYHDR sequence typically follows here */
637	} NTFSATINDEXROOT;
638	AssertCompileSize(NTFSATINDEXROOT, 32);
639	/** Pointer to a NTFS index root. */
640	typedef NTFSATINDEXROOT *PNTFSATINDEXROOT;
641	/** Pointer to a const NTFS index root. */
642	typedef NTFSATINDEXROOT const *PCNTFSATINDEXROOT;
643
644	/** @name NTFSATINDEXROOT_TYPE_XXX
645	* @{ */
646	/** View index. */
647	#define NTFSATINDEXROOT_TYPE_VIEW RT_H2LE_U32_C(UINT32_C(0x00000000))
648	/** Directory index, NTFSATFILENAME follows NTFSINDEXENTRY. */
649	#define NTFSATINDEXROOT_TYPE_DIR RT_H2LE_U32_C(UINT32_C(0x00000030))
650	/** @} */
651
652	/** @name NTFS_COLLATION_XXX - index sorting rules
653	* @{ */
654	/** Little endian binary compare (or plain byte compare if you like). */
655	#define NTFS_COLLATION_BINARY RT_H2LE_U32_C(UINT32_C(0x00000000))
656	/** Same as NTFS_COLLATION_UNICODE_STRING. */
657	#define NTFS_COLLATION_FILENAME RT_H2LE_U32_C(UINT32_C(0x00000001))
658	/** Compare the uppercased unicode characters. */
659	#define NTFS_COLLATION_UNICODE_STRING RT_H2LE_U32_C(UINT32_C(0x00000002))
660
661	/** Single little endian 32-bit unsigned integer value as sort key. */
662	#define NTFS_COLLATION_UINT32 RT_H2LE_U32_C(UINT32_C(0x00000010))
663	/** Little endian SID value as sort key. */
664	#define NTFS_COLLATION_SID RT_H2LE_U32_C(UINT32_C(0x00000011))
665	/** Two little endian 32-bit unsigned integer values used as sorting key. */
666	#define NTFS_COLLATION_UINT32_PAIR RT_H2LE_U32_C(UINT32_C(0x00000012))
667	/** Sequence of little endian 32-bit unsigned integer values used as sorting key. */
668	#define NTFS_COLLATION_UINT32_SEQ RT_H2LE_U32_C(UINT32_C(0x00000013))
669	/** @} */
670
671
672	/**
673	* NTFS index non-root node.
674	*/
675	typedef struct NTFSATINDEXALLOC
676	{
677	/** 0x00: Header with NTFSREC_MAGIC_INDEX_ALLOC. */
678	NTFSRECHDR RecHdr;
679	/** 0x08: Log file sequence number. */
680	uint64_t uLsn;
681	/** 0x10: The node address of this node (for consistency checking and
682	* perhaps data reconstruction).
683	* @see NTFSATINDEXROOT::cAddressesPerIndexNode for node addressing. */
684	int64_t iSelfAddress;
685	/** 0x18: Index header detailing the entries that follows. */
686	NTFSINDEXHDR Hdr;
687	/* 0x28: NTFSIDXENTRYHDR sequence typically follows here */
688	} NTFSATINDEXALLOC;
689	AssertCompileSize(NTFSATINDEXALLOC, 40);
690	/** Pointer to a NTFS index non-root node. */
691	typedef NTFSATINDEXALLOC *PNTFSATINDEXALLOC;
692	/** Pointer to a const NTFS index non-root node. */
693	typedef NTFSATINDEXALLOC const *PCNTFSATINDEXALLOC;
694
695	/** NTFS 'INDX' attribute magic value (NTFSATINDEXALLOC).
696	* @todo sort out the record / attribute name clash here. */
697	#define NTFSREC_MAGIC_INDEX_ALLOC RT_H2LE_U32_C(UINT32_C(0x58444e49))
698
699
700	/**
701	* NTFS index entry header.
702	*
703	* Each entry in a node starts with this header. It is immediately followed by
704	* the key data (NTFSIDXENTRYHDR::cbKey). When
705	*
706	*/
707	typedef struct NTFSIDXENTRYHDR
708	{
709	union
710	{
711	/** 0x00: NTFSATINDEXROOT_TYPE_DIR: Reference to the MFT record being indexed here.
712	* @note This is invalid if NTFSIDXENTRYHDR_F_END is set (no key data). */
713	NTFSMFTREF FileMftRec;
714	/** 0x00: NTFSATINDEXROOT_TYPE_VIEW: Go figure later if necessary. */
715	struct
716	{
717	/** 0x00: Offset to the data relative to this header.
718	* @note This is invalid if NTFSIDXENTRYHDR_F_END is set (no key data). */
719	uint16_t offData;
720	/** 0x02: Size of data at offData.
721	* @note This is invalid if NTFSIDXENTRYHDR_F_END is set (no key data). */
722	uint16_t cbData;
723	/** 0x04: Reserved. */
724	uint32_t uReserved;
725	} View;
726	} u;
727
728	/** 0x08: Size of this entry, 8-byte aligned. */
729	uint16_t cbEntry;
730	/** 0x0a: Key length (unaligned). */
731	uint16_t cbKey;
732	/** 0x0c: Entry flags, NTFSIDXENTRYHDR_F_XXX. */
733	uint16_t fFlags;
734	/** 0x0e: Reserved. */
735	uint16_t uReserved;
736	} NTFSIDXENTRYHDR;
737	AssertCompileSize(NTFSIDXENTRYHDR, 16);
738	/** Pointer to a NTFS index entry header. */
739	typedef NTFSIDXENTRYHDR *PNTFSIDXENTRYHDR;
740	/** Pointer to a const NTFS index entry header. */
741	typedef NTFSIDXENTRYHDR const *PCNTFSIDXENTRYHDR;
742
743	/** @name NTFSIDXENTRYHDR_F_XXX - NTFSIDXENTRYHDR::fFlags
744	* @{ */
745	/** Indicates an internal node (as opposed to a leaf node).
746	* This indicates that there is a 64-bit integer value at the very end of the
747	* entry (NTFSIDXENTRYHDR::cbEntry - 8) giving the virtual cluster number of the
748	* subnode. The subnode and all its decendants contain keys that are lower than
749	* the key in this entry.
750	*/
751	#define NTFSIDXENTRYHDR_F_INTERNAL RT_H2LE_U16_C(UINT16_C(0x0001))
752	/** Set if special end entry in a node.
753	* This does not have any key data, but can point to a subnode with
754	* higher keys. */
755	#define NTFSIDXENTRYHDR_F_END RT_H2LE_U16_C(UINT16_C(0x0002))
756	/** @} */
757
758	/** Gets the pointer to the next index entry header. */
759	#define NTFSIDXENTRYHDR_GET_NEXT(a_pEntryHdr) \
760	( (PNTFSIDXENTRYHDR)((uintptr_t)(a_pEntryHdr) + RT_LE2H_U16((a_pEntryHdr)->cbEntry)) )
761	/** Gets the subnode address from an index entry.
762	* @see NTFSATINDEXROOT::cAddressesPerIndexNode for node addressing.
763	* @note Only invoke when NTFSIDXENTRYHDR_F_INTERNAL is set! */
764	#define NTFSIDXENTRYHDR_GET_SUBNODE(a_pEntryHdr) \
765	( (int64_t )((uintptr_t)(a_pEntryHdr) + RT_LE2H_U16((a_pEntryHdr)->cbEntry) - sizeof(int64_t)) )
766
767	/** @} */
768
769	#endif /* !IPRT_INCLUDED_formats_ntfs_h */
770

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