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ntfs.h
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linux-6.19.14/fs/ntfs3/ntfs.h
1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * 4 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. 5 * 6 * on-disk ntfs structs 7 */ 8 9// clang-format off 10#ifndef _LINUX_NTFS3_NTFS_H 11#define _LINUX_NTFS3_NTFS_H 12 13#include <linux/blkdev.h> 14#include <linux/build_bug.h> 15#include <linux/kernel.h> 16#include <linux/stddef.h> 17#include <linux/string.h> 18#include <linux/types.h> 19 20#include "debug.h" 21 22/* TODO: Check 4K MFT record and 512 bytes cluster. */ 23 24/* Check each run for marked clusters. */ 25#define NTFS3_CHECK_FREE_CLST 26 27#define NTFS_NAME_LEN 255 28 29/* 30 * ntfs.sys used 500 maximum links on-disk struct allows up to 0xffff. 31 * xfstest generic/041 creates 3003 hardlinks. 32 */ 33#define NTFS_LINK_MAX 4000 34 35/* 36 * Activate to use 64 bit clusters instead of 32 bits in ntfs.sys. 37 * Logical and virtual cluster number if needed, may be 38 * redefined to use 64 bit value. 39 */ 40//#define CONFIG_NTFS3_64BIT_CLUSTER 41 42#define NTFS_LZNT_MAX_CLUSTER 4096 43#define NTFS_LZNT_CUNIT 4 44#define NTFS_LZNT_CLUSTERS (1u<<NTFS_LZNT_CUNIT) 45 46struct GUID { 47 __le32 Data1; 48 __le16 Data2; 49 __le16 Data3; 50 u8 Data4[8]; 51}; 52 53/* 54 * This struct repeats layout of ATTR_FILE_NAME 55 * at offset 0x40. 56 * It used to store global constants NAME_MFT/NAME_MIRROR... 57 * most constant names are shorter than 10. 58 */ 59struct cpu_str { 60 u8 len; 61 u8 unused; 62 u16 name[]; 63}; 64 65struct le_str { 66 u8 len; 67 u8 unused; 68 __le16 name[]; 69}; 70 71static_assert(SECTOR_SHIFT == 9); 72 73#ifdef CONFIG_NTFS3_64BIT_CLUSTER 74typedef u64 CLST; 75static_assert(sizeof(size_t) == 8); 76#else 77typedef u32 CLST; 78#endif 79 80#define SPARSE_LCN64 ((u64)-1) 81#define SPARSE_LCN ((CLST)-1) 82#define RESIDENT_LCN ((CLST)-2) 83#define COMPRESSED_LCN ((CLST)-3) 84 85enum RECORD_NUM { 86 MFT_REC_MFT = 0, 87 MFT_REC_MIRR = 1, 88 MFT_REC_LOG = 2, 89 MFT_REC_VOL = 3, 90 MFT_REC_ATTR = 4, 91 MFT_REC_ROOT = 5, 92 MFT_REC_BITMAP = 6, 93 MFT_REC_BOOT = 7, 94 MFT_REC_BADCLUST = 8, 95 MFT_REC_SECURE = 9, 96 MFT_REC_UPCASE = 10, 97 MFT_REC_EXTEND = 11, 98 MFT_REC_RESERVED = 12, 99 MFT_REC_FREE = 16, 100 MFT_REC_USER = 24, 101}; 102 103enum ATTR_TYPE { 104 ATTR_ZERO = cpu_to_le32(0x00), 105 ATTR_STD = cpu_to_le32(0x10), 106 ATTR_LIST = cpu_to_le32(0x20), 107 ATTR_NAME = cpu_to_le32(0x30), 108 ATTR_ID = cpu_to_le32(0x40), 109 ATTR_SECURE = cpu_to_le32(0x50), 110 ATTR_LABEL = cpu_to_le32(0x60), 111 ATTR_VOL_INFO = cpu_to_le32(0x70), 112 ATTR_DATA = cpu_to_le32(0x80), 113 ATTR_ROOT = cpu_to_le32(0x90), 114 ATTR_ALLOC = cpu_to_le32(0xA0), 115 ATTR_BITMAP = cpu_to_le32(0xB0), 116 ATTR_REPARSE = cpu_to_le32(0xC0), 117 ATTR_EA_INFO = cpu_to_le32(0xD0), 118 ATTR_EA = cpu_to_le32(0xE0), 119 ATTR_PROPERTYSET = cpu_to_le32(0xF0), 120 ATTR_LOGGED_UTILITY_STREAM = cpu_to_le32(0x100), 121 ATTR_END = cpu_to_le32(0xFFFFFFFF) 122}; 123 124static_assert(sizeof(enum ATTR_TYPE) == 4); 125 126enum FILE_ATTRIBUTE { 127 FILE_ATTRIBUTE_READONLY = cpu_to_le32(0x00000001), 128 FILE_ATTRIBUTE_HIDDEN = cpu_to_le32(0x00000002), 129 FILE_ATTRIBUTE_SYSTEM = cpu_to_le32(0x00000004), 130 FILE_ATTRIBUTE_ARCHIVE = cpu_to_le32(0x00000020), 131 FILE_ATTRIBUTE_DEVICE = cpu_to_le32(0x00000040), 132 FILE_ATTRIBUTE_TEMPORARY = cpu_to_le32(0x00000100), 133 FILE_ATTRIBUTE_SPARSE_FILE = cpu_to_le32(0x00000200), 134 FILE_ATTRIBUTE_REPARSE_POINT = cpu_to_le32(0x00000400), 135 FILE_ATTRIBUTE_COMPRESSED = cpu_to_le32(0x00000800), 136 FILE_ATTRIBUTE_OFFLINE = cpu_to_le32(0x00001000), 137 FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = cpu_to_le32(0x00002000), 138 FILE_ATTRIBUTE_ENCRYPTED = cpu_to_le32(0x00004000), 139 FILE_ATTRIBUTE_VALID_FLAGS = cpu_to_le32(0x00007fb7), 140 FILE_ATTRIBUTE_DIRECTORY = cpu_to_le32(0x10000000), 141 FILE_ATTRIBUTE_INDEX = cpu_to_le32(0x20000000) 142}; 143 144static_assert(sizeof(enum FILE_ATTRIBUTE) == 4); 145 146extern const struct cpu_str NAME_MFT; 147extern const struct cpu_str NAME_MIRROR; 148extern const struct cpu_str NAME_LOGFILE; 149extern const struct cpu_str NAME_VOLUME; 150extern const struct cpu_str NAME_ATTRDEF; 151extern const struct cpu_str NAME_ROOT; 152extern const struct cpu_str NAME_BITMAP; 153extern const struct cpu_str NAME_BOOT; 154extern const struct cpu_str NAME_BADCLUS; 155extern const struct cpu_str NAME_QUOTA; 156extern const struct cpu_str NAME_SECURE; 157extern const struct cpu_str NAME_UPCASE; 158extern const struct cpu_str NAME_EXTEND; 159extern const struct cpu_str NAME_OBJID; 160extern const struct cpu_str NAME_REPARSE; 161extern const struct cpu_str NAME_USNJRNL; 162 163extern const __le16 I30_NAME[4]; 164extern const __le16 SII_NAME[4]; 165extern const __le16 SDH_NAME[4]; 166extern const __le16 SO_NAME[2]; 167extern const __le16 SQ_NAME[2]; 168extern const __le16 SR_NAME[2]; 169 170extern const __le16 BAD_NAME[4]; 171extern const __le16 SDS_NAME[4]; 172extern const __le16 WOF_NAME[17]; /* WofCompressedData */ 173 174/* MFT record number structure. */ 175struct MFT_REF { 176 __le32 low; // The low part of the number. 177 __le16 high; // The high part of the number. 178 __le16 seq; // The sequence number of MFT record. 179}; 180 181static_assert(sizeof(__le64) == sizeof(struct MFT_REF)); 182 183static inline CLST ino_get(const struct MFT_REF *ref) 184{ 185#ifdef CONFIG_NTFS3_64BIT_CLUSTER 186 return le32_to_cpu(ref->low) | ((u64)le16_to_cpu(ref->high) << 32); 187#else 188 return le32_to_cpu(ref->low); 189#endif 190} 191 192struct NTFS_BOOT { 193 u8 jump_code[3]; // 0x00: Jump to boot code. 194 u8 system_id[8]; // 0x03: System ID, equals "NTFS " 195 196 // NOTE: This member is not aligned(!) 197 // bytes_per_sector[0] must be 0. 198 // bytes_per_sector[1] must be multiplied by 256. 199 u8 bytes_per_sector[2]; // 0x0B: Bytes per sector. 200 201 u8 sectors_per_clusters;// 0x0D: Sectors per cluster. 202 u8 unused1[7]; 203 u8 media_type; // 0x15: Media type (0xF8 - harddisk) 204 u8 unused2[2]; 205 __le16 sct_per_track; // 0x18: number of sectors per track. 206 __le16 heads; // 0x1A: number of heads per cylinder. 207 __le32 hidden_sectors; // 0x1C: number of 'hidden' sectors. 208 u8 unused3[4]; 209 u8 bios_drive_num; // 0x24: BIOS drive number =0x80. 210 u8 unused4; 211 u8 signature_ex; // 0x26: Extended BOOT signature =0x80. 212 u8 unused5; 213 __le64 sectors_per_volume;// 0x28: Size of volume in sectors. 214 __le64 mft_clst; // 0x30: First cluster of $MFT 215 __le64 mft2_clst; // 0x38: First cluster of $MFTMirr 216 s8 record_size; // 0x40: Size of MFT record in clusters(sectors). 217 u8 unused6[3]; 218 s8 index_size; // 0x44: Size of INDX record in clusters(sectors). 219 u8 unused7[3]; 220 __le64 serial_num; // 0x48: Volume serial number 221 __le32 check_sum; // 0x50: Simple additive checksum of all 222 // of the u32's which precede the 'check_sum'. 223 224 u8 boot_code[0x200 - 0x50 - 2 - 4]; // 0x54: 225 u8 boot_magic[2]; // 0x1FE: Boot signature =0x55 + 0xAA 226}; 227 228static_assert(sizeof(struct NTFS_BOOT) == 0x200); 229 230enum NTFS_SIGNATURE { 231 NTFS_FILE_SIGNATURE = cpu_to_le32(0x454C4946), // 'FILE' 232 NTFS_INDX_SIGNATURE = cpu_to_le32(0x58444E49), // 'INDX' 233 NTFS_CHKD_SIGNATURE = cpu_to_le32(0x444B4843), // 'CHKD' 234 NTFS_RSTR_SIGNATURE = cpu_to_le32(0x52545352), // 'RSTR' 235 NTFS_RCRD_SIGNATURE = cpu_to_le32(0x44524352), // 'RCRD' 236 NTFS_BAAD_SIGNATURE = cpu_to_le32(0x44414142), // 'BAAD' 237 NTFS_HOLE_SIGNATURE = cpu_to_le32(0x454C4F48), // 'HOLE' 238 NTFS_FFFF_SIGNATURE = cpu_to_le32(0xffffffff), 239}; 240 241static_assert(sizeof(enum NTFS_SIGNATURE) == 4); 242 243/* MFT Record header structure. */ 244struct NTFS_RECORD_HEADER { 245 /* Record magic number, equals 'FILE'/'INDX'/'RSTR'/'RCRD'. */ 246 enum NTFS_SIGNATURE sign; // 0x00: 247 __le16 fix_off; // 0x04: 248 __le16 fix_num; // 0x06: 249 __le64 lsn; // 0x08: Log file sequence number, 250}; 251 252static_assert(sizeof(struct NTFS_RECORD_HEADER) == 0x10); 253 254static inline int is_baad(const struct NTFS_RECORD_HEADER *hdr) 255{ 256 return hdr->sign == NTFS_BAAD_SIGNATURE; 257} 258 259/* Possible bits in struct MFT_REC.flags. */ 260enum RECORD_FLAG { 261 RECORD_FLAG_IN_USE = cpu_to_le16(0x0001), 262 RECORD_FLAG_DIR = cpu_to_le16(0x0002), 263 RECORD_FLAG_SYSTEM = cpu_to_le16(0x0004), 264 RECORD_FLAG_INDEX = cpu_to_le16(0x0008), 265}; 266 267/* MFT Record structure. */ 268struct MFT_REC { 269 struct NTFS_RECORD_HEADER rhdr; // 'FILE' 270 271 __le16 seq; // 0x10: Sequence number for this record. 272 __le16 hard_links; // 0x12: The number of hard links to record. 273 __le16 attr_off; // 0x14: Offset to attributes. 274 __le16 flags; // 0x16: See RECORD_FLAG. 275 __le32 used; // 0x18: The size of used part. 276 __le32 total; // 0x1C: Total record size. 277 278 struct MFT_REF parent_ref; // 0x20: Parent MFT record. 279 __le16 next_attr_id; // 0x28: The next attribute Id. 280 281 __le16 res; // 0x2A: High part of MFT record? 282 __le32 mft_record; // 0x2C: Current MFT record number. 283 __le16 fixups[]; // 0x30: 284}; 285 286#define MFTRECORD_FIXUP_OFFSET_1 offsetof(struct MFT_REC, res) 287#define MFTRECORD_FIXUP_OFFSET_3 offsetof(struct MFT_REC, fixups) 288/* 289 * define MFTRECORD_FIXUP_OFFSET as MFTRECORD_FIXUP_OFFSET_3 (0x30) 290 * to format new mft records with bigger header (as current ntfs.sys does) 291 * 292 * define MFTRECORD_FIXUP_OFFSET as MFTRECORD_FIXUP_OFFSET_1 (0x2A) 293 * to format new mft records with smaller header (as old ntfs.sys did) 294 * Both variants are valid. 295 */ 296#define MFTRECORD_FIXUP_OFFSET MFTRECORD_FIXUP_OFFSET_1 297 298static_assert(MFTRECORD_FIXUP_OFFSET_1 == 0x2A); 299static_assert(MFTRECORD_FIXUP_OFFSET_3 == 0x30); 300 301static inline bool is_rec_base(const struct MFT_REC *rec) 302{ 303 const struct MFT_REF *r = &rec->parent_ref; 304 305 return !r->low && !r->high && !r->seq; 306} 307 308static inline bool is_mft_rec5(const struct MFT_REC *rec) 309{ 310 return le16_to_cpu(rec->rhdr.fix_off) >= 311 offsetof(struct MFT_REC, fixups); 312} 313 314static inline bool is_rec_inuse(const struct MFT_REC *rec) 315{ 316 return rec->flags & RECORD_FLAG_IN_USE; 317} 318 319static inline bool clear_rec_inuse(struct MFT_REC *rec) 320{ 321 return rec->flags &= ~RECORD_FLAG_IN_USE; 322} 323 324/* Possible values of ATTR_RESIDENT.flags */ 325#define RESIDENT_FLAG_INDEXED 0x01 326 327struct ATTR_RESIDENT { 328 __le32 data_size; // 0x10: The size of data. 329 __le16 data_off; // 0x14: Offset to data. 330 u8 flags; // 0x16: Resident flags ( 1 - indexed ). 331 u8 res; // 0x17: 332}; // sizeof() = 0x18 333 334struct ATTR_NONRESIDENT { 335 __le64 svcn; // 0x10: Starting VCN of this segment. 336 __le64 evcn; // 0x18: End VCN of this segment. 337 __le16 run_off; // 0x20: Offset to packed runs. 338 // Unit of Compression size for this stream, expressed 339 // as a log of the cluster size. 340 // 341 // 0 means file is not compressed 342 // 1, 2, 3, and 4 are potentially legal values if the 343 // stream is compressed, however the implementation 344 // may only choose to use 4, or possibly 3. 345 // Note that 4 means cluster size time 16. 346 // If convenient the implementation may wish to accept a 347 // reasonable range of legal values here (1-5?), 348 // even if the implementation only generates 349 // a smaller set of values itself. 350 u8 c_unit; // 0x22: 351 u8 res1[5]; // 0x23: 352 __le64 alloc_size; // 0x28: The allocated size of attribute in bytes. 353 // (multiple of cluster size) 354 __le64 data_size; // 0x30: The size of attribute in bytes <= alloc_size. 355 __le64 valid_size; // 0x38: The size of valid part in bytes <= data_size. 356 __le64 total_size; // 0x40: The sum of the allocated clusters for a file. 357 // (present only for the first segment (0 == vcn) 358 // of compressed attribute) 359 360}; // sizeof()=0x40 or 0x48 (if compressed) 361 362/* Possible values of ATTRIB.flags: */ 363#define ATTR_FLAG_COMPRESSED cpu_to_le16(0x0001) 364#define ATTR_FLAG_COMPRESSED_MASK cpu_to_le16(0x00FF) 365#define ATTR_FLAG_ENCRYPTED cpu_to_le16(0x4000) 366#define ATTR_FLAG_SPARSED cpu_to_le16(0x8000) 367 368struct ATTRIB { 369 enum ATTR_TYPE type; // 0x00: The type of this attribute. 370 __le32 size; // 0x04: The size of this attribute. 371 u8 non_res; // 0x08: Is this attribute non-resident? 372 u8 name_len; // 0x09: This attribute name length. 373 __le16 name_off; // 0x0A: Offset to the attribute name. 374 __le16 flags; // 0x0C: See ATTR_FLAG_XXX. 375 __le16 id; // 0x0E: Unique id (per record). 376 377 union { 378 struct ATTR_RESIDENT res; // 0x10 379 struct ATTR_NONRESIDENT nres; // 0x10 380 }; 381}; 382 383/* Define attribute sizes. */ 384#define SIZEOF_RESIDENT 0x18 385#define SIZEOF_NONRESIDENT_EX 0x48 386#define SIZEOF_NONRESIDENT 0x40 387 388#define SIZEOF_RESIDENT_LE cpu_to_le16(0x18) 389#define SIZEOF_NONRESIDENT_EX_LE cpu_to_le16(0x48) 390#define SIZEOF_NONRESIDENT_LE cpu_to_le16(0x40) 391 392static inline u64 attr_ondisk_size(const struct ATTRIB *attr) 393{ 394 return attr->non_res ? ((attr->flags & 395 (ATTR_FLAG_COMPRESSED | ATTR_FLAG_SPARSED)) ? 396 le64_to_cpu(attr->nres.total_size) : 397 le64_to_cpu(attr->nres.alloc_size)) 398 : ALIGN(le32_to_cpu(attr->res.data_size), 8); 399} 400 401static inline u64 attr_size(const struct ATTRIB *attr) 402{ 403 return attr->non_res ? le64_to_cpu(attr->nres.data_size) : 404 le32_to_cpu(attr->res.data_size); 405} 406 407static inline bool is_attr_encrypted(const struct ATTRIB *attr) 408{ 409 return attr->flags & ATTR_FLAG_ENCRYPTED; 410} 411 412static inline bool is_attr_sparsed(const struct ATTRIB *attr) 413{ 414 return attr->flags & ATTR_FLAG_SPARSED; 415} 416 417static inline bool is_attr_compressed(const struct ATTRIB *attr) 418{ 419 return attr->flags & ATTR_FLAG_COMPRESSED; 420} 421 422static inline bool is_attr_ext(const struct ATTRIB *attr) 423{ 424 return attr->flags & (ATTR_FLAG_SPARSED | ATTR_FLAG_COMPRESSED); 425} 426 427static inline bool is_attr_indexed(const struct ATTRIB *attr) 428{ 429 return !attr->non_res && (attr->res.flags & RESIDENT_FLAG_INDEXED); 430} 431 432static inline __le16 const *attr_name(const struct ATTRIB *attr) 433{ 434 return Add2Ptr(attr, le16_to_cpu(attr->name_off)); 435} 436 437static inline u64 attr_svcn(const struct ATTRIB *attr) 438{ 439 return attr->non_res ? le64_to_cpu(attr->nres.svcn) : 0; 440} 441 442static_assert(sizeof(struct ATTRIB) == 0x48); 443static_assert(sizeof(((struct ATTRIB *)NULL)->res) == 0x08); 444static_assert(sizeof(((struct ATTRIB *)NULL)->nres) == 0x38); 445 446static inline void *resident_data_ex(const struct ATTRIB *attr, u32 datasize) 447{ 448 u32 asize, rsize; 449 u16 off; 450 451 if (attr->non_res) 452 return NULL; 453 454 asize = le32_to_cpu(attr->size); 455 off = le16_to_cpu(attr->res.data_off); 456 457 if (asize < datasize + off) 458 return NULL; 459 460 rsize = le32_to_cpu(attr->res.data_size); 461 if (rsize < datasize) 462 return NULL; 463 464 return Add2Ptr(attr, off); 465} 466 467static inline void *resident_data(const struct ATTRIB *attr) 468{ 469 return Add2Ptr(attr, le16_to_cpu(attr->res.data_off)); 470} 471 472static inline void *attr_run(const struct ATTRIB *attr) 473{ 474 return Add2Ptr(attr, le16_to_cpu(attr->nres.run_off)); 475} 476 477/* Standard information attribute (0x10). */ 478struct ATTR_STD_INFO { 479 __le64 cr_time; // 0x00: File creation file. 480 __le64 m_time; // 0x08: File modification time. 481 __le64 c_time; // 0x10: Last time any attribute was modified. 482 __le64 a_time; // 0x18: File last access time. 483 enum FILE_ATTRIBUTE fa; // 0x20: Standard DOS attributes & more. 484 __le32 max_ver_num; // 0x24: Maximum Number of Versions. 485 __le32 ver_num; // 0x28: Version Number. 486 __le32 class_id; // 0x2C: Class Id from bidirectional Class Id index. 487}; 488 489static_assert(sizeof(struct ATTR_STD_INFO) == 0x30); 490 491#define SECURITY_ID_INVALID 0x00000000 492#define SECURITY_ID_FIRST 0x00000100 493 494struct ATTR_STD_INFO5 { 495 __le64 cr_time; // 0x00: File creation file. 496 __le64 m_time; // 0x08: File modification time. 497 __le64 c_time; // 0x10: Last time any attribute was modified. 498 __le64 a_time; // 0x18: File last access time. 499 enum FILE_ATTRIBUTE fa; // 0x20: Standard DOS attributes & more. 500 __le32 max_ver_num; // 0x24: Maximum Number of Versions. 501 __le32 ver_num; // 0x28: Version Number. 502 __le32 class_id; // 0x2C: Class Id from bidirectional Class Id index. 503 504 __le32 owner_id; // 0x30: Owner Id of the user owning the file. 505 __le32 security_id; // 0x34: The Security Id is a key in the $SII Index and $SDS. 506 __le64 quota_charge; // 0x38: 507 __le64 usn; // 0x40: Last Update Sequence Number of the file. This is a direct 508 // index into the file $UsnJrnl. If zero, the USN Journal is 509 // disabled. 510}; 511 512static_assert(sizeof(struct ATTR_STD_INFO5) == 0x48); 513 514/* Attribute list entry structure (0x20) */ 515struct ATTR_LIST_ENTRY { 516 enum ATTR_TYPE type; // 0x00: The type of attribute. 517 __le16 size; // 0x04: The size of this record. 518 u8 name_len; // 0x06: The length of attribute name. 519 u8 name_off; // 0x07: The offset to attribute name. 520 __le64 vcn; // 0x08: Starting VCN of this attribute. 521 struct MFT_REF ref; // 0x10: MFT record number with attribute. 522 __le16 id; // 0x18: struct ATTRIB ID. 523 __le16 name[]; // 0x1A: To get real name use name_off. 524 525}; // sizeof(0x20) 526 527static inline u32 le_size(u8 name_len) 528{ 529 return ALIGN(offsetof(struct ATTR_LIST_ENTRY, name) + 530 name_len * sizeof(short), 8); 531} 532 533/* Returns 0 if 'attr' has the same type and name. */ 534static inline int le_cmp(const struct ATTR_LIST_ENTRY *le, 535 const struct ATTRIB *attr) 536{ 537 return le->type != attr->type || le->name_len != attr->name_len || 538 (!le->name_len && 539 memcmp(Add2Ptr(le, le->name_off), 540 Add2Ptr(attr, le16_to_cpu(attr->name_off)), 541 le->name_len * sizeof(short))); 542} 543 544static inline __le16 const *le_name(const struct ATTR_LIST_ENTRY *le) 545{ 546 return Add2Ptr(le, le->name_off); 547} 548 549/* File name types (the field type in struct ATTR_FILE_NAME). */ 550#define FILE_NAME_POSIX 0 551#define FILE_NAME_UNICODE 1 552#define FILE_NAME_DOS 2 553#define FILE_NAME_UNICODE_AND_DOS (FILE_NAME_DOS | FILE_NAME_UNICODE) 554 555/* Filename attribute structure (0x30). */ 556struct NTFS_DUP_INFO { 557 __le64 cr_time; // 0x00: File creation file. 558 __le64 m_time; // 0x08: File modification time. 559 __le64 c_time; // 0x10: Last time any attribute was modified. 560 __le64 a_time; // 0x18: File last access time. 561 __le64 alloc_size; // 0x20: Data attribute allocated size, multiple of cluster size. 562 __le64 data_size; // 0x28: Data attribute size <= Dataalloc_size. 563 enum FILE_ATTRIBUTE fa; // 0x30: Standard DOS attributes & more. 564 __le32 extend_data; // 0x34: Extended data. 565 566}; // 0x38 567 568struct ATTR_FILE_NAME { 569 struct MFT_REF home; // 0x00: MFT record for directory. 570 struct NTFS_DUP_INFO dup;// 0x08: 571 u8 name_len; // 0x40: File name length in words. 572 u8 type; // 0x41: File name type. 573 __le16 name[]; // 0x42: File name. 574}; 575 576static_assert(sizeof(((struct ATTR_FILE_NAME *)NULL)->dup) == 0x38); 577static_assert(offsetof(struct ATTR_FILE_NAME, name) == 0x42); 578#define SIZEOF_ATTRIBUTE_FILENAME 0x44 579#define SIZEOF_ATTRIBUTE_FILENAME_MAX (0x42 + 255 * 2) 580 581static inline struct ATTRIB *attr_from_name(struct ATTR_FILE_NAME *fname) 582{ 583 return (struct ATTRIB *)((char *)fname - SIZEOF_RESIDENT); 584} 585 586static inline u16 fname_full_size(const struct ATTR_FILE_NAME *fname) 587{ 588 /* Don't return struct_size(fname, name, fname->name_len); */ 589 return offsetof(struct ATTR_FILE_NAME, name) + 590 fname->name_len * sizeof(short); 591} 592 593static inline u8 paired_name(u8 type) 594{ 595 if (type == FILE_NAME_UNICODE) 596 return FILE_NAME_DOS; 597 if (type == FILE_NAME_DOS) 598 return FILE_NAME_UNICODE; 599 return FILE_NAME_POSIX; 600} 601 602/* Index entry defines ( the field flags in NtfsDirEntry ). */ 603#define NTFS_IE_HAS_SUBNODES cpu_to_le16(1) 604#define NTFS_IE_LAST cpu_to_le16(2) 605 606/* Directory entry structure. */ 607struct NTFS_DE { 608 union { 609 struct MFT_REF ref; // 0x00: MFT record number with this file. 610 struct { 611 __le16 data_off; // 0x00: 612 __le16 data_size; // 0x02: 613 __le32 res; // 0x04: Must be 0. 614 } view; 615 }; 616 __le16 size; // 0x08: The size of this entry. 617 __le16 key_size; // 0x0A: The size of File name length in bytes + 0x42. 618 __le16 flags; // 0x0C: Entry flags: NTFS_IE_XXX. 619 __le16 res; // 0x0E: 620 621 // Here any indexed attribute can be placed. 622 // One of them is: 623 // struct ATTR_FILE_NAME AttrFileName; 624 // 625 626 // The last 8 bytes of this structure contains 627 // the VBN of subnode. 628 // !!! Note !!! 629 // This field is presented only if (flags & NTFS_IE_HAS_SUBNODES) 630 // __le64 vbn; 631}; 632 633static_assert(sizeof(struct NTFS_DE) == 0x10); 634 635static inline void de_set_vbn_le(struct NTFS_DE *e, __le64 vcn) 636{ 637 __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64)); 638 639 *v = vcn; 640} 641 642static inline void de_set_vbn(struct NTFS_DE *e, CLST vcn) 643{ 644 __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64)); 645 646 *v = cpu_to_le64(vcn); 647} 648 649static inline __le64 de_get_vbn_le(const struct NTFS_DE *e) 650{ 651 return *(__le64 *)Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64)); 652} 653 654static inline CLST de_get_vbn(const struct NTFS_DE *e) 655{ 656 __le64 *v = Add2Ptr(e, le16_to_cpu(e->size) - sizeof(__le64)); 657 658 return le64_to_cpu(*v); 659} 660 661static inline struct NTFS_DE *de_get_next(const struct NTFS_DE *e) 662{ 663 return Add2Ptr(e, le16_to_cpu(e->size)); 664} 665 666static inline struct ATTR_FILE_NAME *de_get_fname(const struct NTFS_DE *e) 667{ 668 return le16_to_cpu(e->key_size) >= SIZEOF_ATTRIBUTE_FILENAME ? 669 Add2Ptr(e, sizeof(struct NTFS_DE)) : 670 NULL; 671} 672 673static inline bool de_is_last(const struct NTFS_DE *e) 674{ 675 return e->flags & NTFS_IE_LAST; 676} 677 678static inline bool de_has_vcn(const struct NTFS_DE *e) 679{ 680 return e->flags & NTFS_IE_HAS_SUBNODES; 681} 682 683static inline bool de_has_vcn_ex(const struct NTFS_DE *e) 684{ 685 return (e->flags & NTFS_IE_HAS_SUBNODES) && 686 (u64)(-1) != *((u64 *)Add2Ptr(e, le16_to_cpu(e->size) - 687 sizeof(__le64))); 688} 689 690#define MAX_BYTES_PER_NAME_ENTRY \ 691 ALIGN(sizeof(struct NTFS_DE) + \ 692 offsetof(struct ATTR_FILE_NAME, name) + \ 693 NTFS_NAME_LEN * sizeof(short), 8) 694 695#define NTFS_INDEX_HDR_HAS_SUBNODES cpu_to_le32(1) 696 697struct INDEX_HDR { 698 __le32 de_off; // 0x00: The offset from the start of this structure 699 // to the first NTFS_DE. 700 __le32 used; // 0x04: The size of this structure plus all 701 // entries (quad-word aligned). 702 __le32 total; // 0x08: The allocated size of for this structure plus all entries. 703 __le32 flags; // 0x0C: 0x00 = Small directory, 0x01 = Large directory. 704 705 // 706 // de_off + used <= total 707 // 708}; 709 710static_assert(sizeof(struct INDEX_HDR) == 0x10); 711 712static inline struct NTFS_DE *hdr_first_de(const struct INDEX_HDR *hdr) 713{ 714 u32 de_off = le32_to_cpu(hdr->de_off); 715 u32 used = le32_to_cpu(hdr->used); 716 struct NTFS_DE *e; 717 u16 esize; 718 719 if (de_off >= used || size_add(de_off, sizeof(struct NTFS_DE)) > used) 720 return NULL; 721 722 e = Add2Ptr(hdr, de_off); 723 esize = le16_to_cpu(e->size); 724 if (esize < sizeof(struct NTFS_DE) || de_off + esize > used) 725 return NULL; 726 727 return e; 728} 729 730static inline struct NTFS_DE *hdr_next_de(const struct INDEX_HDR *hdr, 731 const struct NTFS_DE *e) 732{ 733 size_t off = PtrOffset(hdr, e); 734 u32 used = le32_to_cpu(hdr->used); 735 u16 esize; 736 737 if (off >= used) 738 return NULL; 739 740 esize = le16_to_cpu(e->size); 741 742 if (esize < sizeof(struct NTFS_DE) || 743 off + esize + sizeof(struct NTFS_DE) > used) 744 return NULL; 745 746 return Add2Ptr(e, esize); 747} 748 749static inline bool hdr_has_subnode(const struct INDEX_HDR *hdr) 750{ 751 return hdr->flags & NTFS_INDEX_HDR_HAS_SUBNODES; 752} 753 754struct INDEX_BUFFER { 755 struct NTFS_RECORD_HEADER rhdr; // 'INDX' 756 __le64 vbn; // 0x10: vcn if index >= cluster or vsn id index < cluster 757 struct INDEX_HDR ihdr; // 0x18: 758}; 759 760static_assert(sizeof(struct INDEX_BUFFER) == 0x28); 761 762static inline bool ib_is_empty(const struct INDEX_BUFFER *ib) 763{ 764 const struct NTFS_DE *first = hdr_first_de(&ib->ihdr); 765 766 return !first || de_is_last(first); 767} 768 769static inline bool ib_is_leaf(const struct INDEX_BUFFER *ib) 770{ 771 return !(ib->ihdr.flags & NTFS_INDEX_HDR_HAS_SUBNODES); 772} 773 774/* Index root structure ( 0x90 ). */ 775enum COLLATION_RULE { 776 NTFS_COLLATION_TYPE_BINARY = cpu_to_le32(0), 777 // $I30 778 NTFS_COLLATION_TYPE_FILENAME = cpu_to_le32(0x01), 779 // $SII of $Secure and $Q of Quota 780 NTFS_COLLATION_TYPE_UINT = cpu_to_le32(0x10), 781 // $O of Quota 782 NTFS_COLLATION_TYPE_SID = cpu_to_le32(0x11), 783 // $SDH of $Secure 784 NTFS_COLLATION_TYPE_SECURITY_HASH = cpu_to_le32(0x12), 785 // $O of ObjId and "$R" for Reparse 786 NTFS_COLLATION_TYPE_UINTS = cpu_to_le32(0x13) 787}; 788 789static_assert(sizeof(enum COLLATION_RULE) == 4); 790 791// 792struct INDEX_ROOT { 793 enum ATTR_TYPE type; // 0x00: The type of attribute to index on. 794 enum COLLATION_RULE rule; // 0x04: The rule. 795 __le32 index_block_size;// 0x08: The size of index record. 796 u8 index_block_clst; // 0x0C: The number of clusters or sectors per index. 797 u8 res[3]; 798 struct INDEX_HDR ihdr; // 0x10: 799}; 800 801static_assert(sizeof(struct INDEX_ROOT) == 0x20); 802static_assert(offsetof(struct INDEX_ROOT, ihdr) == 0x10); 803 804#define VOLUME_FLAG_DIRTY cpu_to_le16(0x0001) 805#define VOLUME_FLAG_RESIZE_LOG_FILE cpu_to_le16(0x0002) 806 807struct VOLUME_INFO { 808 __le64 res1; // 0x00 809 u8 major_ver; // 0x08: NTFS major version number (before .) 810 u8 minor_ver; // 0x09: NTFS minor version number (after .) 811 __le16 flags; // 0x0A: Volume flags, see VOLUME_FLAG_XXX 812 813}; // sizeof=0xC 814 815#define SIZEOF_ATTRIBUTE_VOLUME_INFO 0xc 816 817#define NTFS_LABEL_MAX_LENGTH (0x100 / sizeof(short)) 818#define NTFS_ATTR_INDEXABLE cpu_to_le32(0x00000002) 819#define NTFS_ATTR_DUPALLOWED cpu_to_le32(0x00000004) 820#define NTFS_ATTR_MUST_BE_INDEXED cpu_to_le32(0x00000010) 821#define NTFS_ATTR_MUST_BE_NAMED cpu_to_le32(0x00000020) 822#define NTFS_ATTR_MUST_BE_RESIDENT cpu_to_le32(0x00000040) 823#define NTFS_ATTR_LOG_ALWAYS cpu_to_le32(0x00000080) 824 825/* $AttrDef file entry. */ 826struct ATTR_DEF_ENTRY { 827 __le16 name[0x40]; // 0x00: Attr name. 828 enum ATTR_TYPE type; // 0x80: struct ATTRIB type. 829 __le32 res; // 0x84: 830 enum COLLATION_RULE rule; // 0x88: 831 __le32 flags; // 0x8C: NTFS_ATTR_XXX (see above). 832 __le64 min_sz; // 0x90: Minimum attribute data size. 833 __le64 max_sz; // 0x98: Maximum attribute data size. 834}; 835 836static_assert(sizeof(struct ATTR_DEF_ENTRY) == 0xa0); 837 838/* Object ID (0x40) */ 839struct OBJECT_ID { 840 struct GUID ObjId; // 0x00: Unique Id assigned to file. 841 842 // Birth Volume Id is the Object Id of the Volume on. 843 // which the Object Id was allocated. It never changes. 844 struct GUID BirthVolumeId; //0x10: 845 846 // Birth Object Id is the first Object Id that was 847 // ever assigned to this MFT Record. I.e. If the Object Id 848 // is changed for some reason, this field will reflect the 849 // original value of the Object Id. 850 struct GUID BirthObjectId; // 0x20: 851 852 // Domain Id is currently unused but it is intended to be 853 // used in a network environment where the local machine is 854 // part of a Windows 2000 Domain. This may be used in a Windows 855 // 2000 Advanced Server managed domain. 856 struct GUID DomainId; // 0x30: 857}; 858 859static_assert(sizeof(struct OBJECT_ID) == 0x40); 860 861/* O Directory entry structure ( rule = 0x13 ) */ 862struct NTFS_DE_O { 863 struct NTFS_DE de; 864 struct GUID ObjId; // 0x10: Unique Id assigned to file. 865 struct MFT_REF ref; // 0x20: MFT record number with this file. 866 867 // Birth Volume Id is the Object Id of the Volume on 868 // which the Object Id was allocated. It never changes. 869 struct GUID BirthVolumeId; // 0x28: 870 871 // Birth Object Id is the first Object Id that was 872 // ever assigned to this MFT Record. I.e. If the Object Id 873 // is changed for some reason, this field will reflect the 874 // original value of the Object Id. 875 // This field is valid if data_size == 0x48. 876 struct GUID BirthObjectId; // 0x38: 877 878 // Domain Id is currently unused but it is intended 879 // to be used in a network environment where the local 880 // machine is part of a Windows 2000 Domain. This may be 881 // used in a Windows 2000 Advanced Server managed domain. 882 struct GUID BirthDomainId; // 0x48: 883}; 884 885static_assert(sizeof(struct NTFS_DE_O) == 0x58); 886 887/* Q Directory entry structure ( rule = 0x11 ) */ 888struct NTFS_DE_Q { 889 struct NTFS_DE de; 890 __le32 owner_id; // 0x10: Unique Id assigned to file 891 892 /* here is 0x30 bytes of user quota. NOTE: 4 byte aligned! */ 893 __le32 Version; // 0x14: 0x02 894 __le32 Flags; // 0x18: Quota flags, see above 895 __le64 BytesUsed; // 0x1C: 896 __le64 ChangeTime; // 0x24: 897 __le64 WarningLimit; // 0x28: 898 __le64 HardLimit; // 0x34: 899 __le64 ExceededTime; // 0x3C: 900 901 // SID is placed here 902}__packed; // sizeof() = 0x44 903 904static_assert(sizeof(struct NTFS_DE_Q) == 0x44); 905 906#define SecurityDescriptorsBlockSize 0x40000 // 256K 907#define SecurityDescriptorMaxSize 0x20000 // 128K 908#define Log2OfSecurityDescriptorsBlockSize 18 909 910struct SECURITY_KEY { 911 __le32 hash; // Hash value for descriptor 912 __le32 sec_id; // Security Id (guaranteed unique) 913}; 914 915/* Security descriptors (the content of $Secure::SDS data stream) */ 916struct SECURITY_HDR { 917 struct SECURITY_KEY key; // 0x00: Security Key. 918 __le64 off; // 0x08: Offset of this entry in the file. 919 __le32 size; // 0x10: Size of this entry, 8 byte aligned. 920 /* 921 * Security descriptor itself is placed here. 922 * Total size is 16 byte aligned. 923 */ 924} __packed; 925 926static_assert(sizeof(struct SECURITY_HDR) == 0x14); 927 928/* SII Directory entry structure */ 929struct NTFS_DE_SII { 930 struct NTFS_DE de; 931 __le32 sec_id; // 0x10: Key: sizeof(security_id) = wKeySize 932 struct SECURITY_HDR sec_hdr; // 0x14: 933} __packed; 934 935static_assert(offsetof(struct NTFS_DE_SII, sec_hdr) == 0x14); 936static_assert(sizeof(struct NTFS_DE_SII) == 0x28); 937 938/* SDH Directory entry structure */ 939struct NTFS_DE_SDH { 940 struct NTFS_DE de; 941 struct SECURITY_KEY key; // 0x10: Key 942 struct SECURITY_HDR sec_hdr; // 0x18: Data 943 __le16 magic[2]; // 0x2C: 0x00490049 "I I" 944}; 945 946#define SIZEOF_SDH_DIRENTRY 0x30 947 948struct REPARSE_KEY { 949 __le32 ReparseTag; // 0x00: Reparse Tag 950 struct MFT_REF ref; // 0x04: MFT record number with this file 951}; // sizeof() = 0x0C 952 953static_assert(offsetof(struct REPARSE_KEY, ref) == 0x04); 954#define SIZEOF_REPARSE_KEY 0x0C 955 956/* Reparse Directory entry structure */ 957struct NTFS_DE_R { 958 struct NTFS_DE de; 959 struct REPARSE_KEY key; // 0x10: Reparse Key. 960 u32 zero; // 0x1c: 961}; // sizeof() = 0x20 962 963static_assert(sizeof(struct NTFS_DE_R) == 0x20); 964 965/* CompressReparseBuffer.WofVersion */ 966#define WOF_CURRENT_VERSION cpu_to_le32(1) 967/* CompressReparseBuffer.WofProvider */ 968#define WOF_PROVIDER_WIM cpu_to_le32(1) 969/* CompressReparseBuffer.WofProvider */ 970#define WOF_PROVIDER_SYSTEM cpu_to_le32(2) 971/* CompressReparseBuffer.ProviderVer */ 972#define WOF_PROVIDER_CURRENT_VERSION cpu_to_le32(1) 973 974#define WOF_COMPRESSION_XPRESS4K cpu_to_le32(0) // 4k 975#define WOF_COMPRESSION_LZX32K cpu_to_le32(1) // 32k 976#define WOF_COMPRESSION_XPRESS8K cpu_to_le32(2) // 8k 977#define WOF_COMPRESSION_XPRESS16K cpu_to_le32(3) // 16k 978 979/* 980 * ATTR_REPARSE (0xC0) 981 * 982 * The reparse struct GUID structure is used by all 3rd party layered drivers to 983 * store data in a reparse point. For non-Microsoft tags, The struct GUID field 984 * cannot be GUID_NULL. 985 * The constraints on reparse tags are defined below. 986 * Microsoft tags can also be used with this format of the reparse point buffer. 987 */ 988struct REPARSE_POINT { 989 __le32 ReparseTag; // 0x00: 990 __le16 ReparseDataLength;// 0x04: 991 __le16 Reserved; 992 993 struct GUID Guid; // 0x08: 994 995 // 996 // Here GenericReparseBuffer is placed 997 // 998}; 999 1000static_assert(sizeof(struct REPARSE_POINT) == 0x18); 1001 1002/* 1003 * The value of the following constant needs to satisfy the following 1004 * conditions: 1005 * (1) Be at least as large as the largest of the reserved tags. 1006 * (2) Be strictly smaller than all the tags in use. 1007 */ 1008#define IO_REPARSE_TAG_RESERVED_RANGE 1 1009 1010/* 1011 * The reparse tags are a ULONG. The 32 bits are laid out as follows: 1012 * 1013 * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1014 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 1015 * +-+-+-+-+-----------------------+-------------------------------+ 1016 * |M|R|N|R| Reserved bits | Reparse Tag Value | 1017 * +-+-+-+-+-----------------------+-------------------------------+ 1018 * 1019 * M is the Microsoft bit. When set to 1, it denotes a tag owned by Microsoft. 1020 * All ISVs must use a tag with a 0 in this position. 1021 * Note: If a Microsoft tag is used by non-Microsoft software, the 1022 * behavior is not defined. 1023 * 1024 * R is reserved. Must be zero for non-Microsoft tags. 1025 * 1026 * N is name surrogate. When set to 1, the file represents another named 1027 * entity in the system. 1028 * 1029 * The M and N bits are OR-able. 1030 * The following macros check for the M and N bit values: 1031 */ 1032 1033/* 1034 * Macro to determine whether a reparse point tag corresponds to a tag 1035 * owned by Microsoft. 1036 */ 1037#define IsReparseTagMicrosoft(_tag) (((_tag)&IO_REPARSE_TAG_MICROSOFT)) 1038 1039/* Macro to determine whether a reparse point tag is a name surrogate. */ 1040#define IsReparseTagNameSurrogate(_tag) (((_tag)&IO_REPARSE_TAG_NAME_SURROGATE)) 1041 1042/* 1043 * The following constant represents the bits that are valid to use in 1044 * reparse tags. 1045 */ 1046#define IO_REPARSE_TAG_VALID_VALUES 0xF000FFFF 1047 1048/* 1049 * Macro to determine whether a reparse tag is a valid tag. 1050 */ 1051#define IsReparseTagValid(_tag) \ 1052 (!((_tag) & ~IO_REPARSE_TAG_VALID_VALUES) && \ 1053 ((_tag) > IO_REPARSE_TAG_RESERVED_RANGE)) 1054 1055/* Microsoft tags for reparse points. */ 1056 1057enum IO_REPARSE_TAG { 1058 IO_REPARSE_TAG_SYMBOLIC_LINK = cpu_to_le32(0), 1059 IO_REPARSE_TAG_NAME_SURROGATE = cpu_to_le32(0x20000000), 1060 IO_REPARSE_TAG_MICROSOFT = cpu_to_le32(0x80000000), 1061 IO_REPARSE_TAG_MOUNT_POINT = cpu_to_le32(0xA0000003), 1062 IO_REPARSE_TAG_SYMLINK = cpu_to_le32(0xA000000C), 1063 IO_REPARSE_TAG_HSM = cpu_to_le32(0xC0000004), 1064 IO_REPARSE_TAG_SIS = cpu_to_le32(0x80000007), 1065 IO_REPARSE_TAG_DEDUP = cpu_to_le32(0x80000013), 1066 IO_REPARSE_TAG_COMPRESS = cpu_to_le32(0x80000017), 1067 1068 /* 1069 * The reparse tag 0x80000008 is reserved for Microsoft internal use. 1070 * May be published in the future. 1071 */ 1072 1073 /* Microsoft reparse tag reserved for DFS */ 1074 IO_REPARSE_TAG_DFS = cpu_to_le32(0x8000000A), 1075 1076 /* Microsoft reparse tag reserved for the file system filter manager. */ 1077 IO_REPARSE_TAG_FILTER_MANAGER = cpu_to_le32(0x8000000B), 1078 1079 /* Non-Microsoft tags for reparse points */ 1080 1081 /* Tag allocated to CONGRUENT, May 2000. Used by IFSTEST. */ 1082 IO_REPARSE_TAG_IFSTEST_CONGRUENT = cpu_to_le32(0x00000009), 1083 1084 /* Tag allocated to ARKIVIO. */ 1085 IO_REPARSE_TAG_ARKIVIO = cpu_to_le32(0x0000000C), 1086 1087 /* Tag allocated to SOLUTIONSOFT. */ 1088 IO_REPARSE_TAG_SOLUTIONSOFT = cpu_to_le32(0x2000000D), 1089 1090 /* Tag allocated to COMMVAULT. */ 1091 IO_REPARSE_TAG_COMMVAULT = cpu_to_le32(0x0000000E), 1092 1093 /* OneDrive?? */ 1094 IO_REPARSE_TAG_CLOUD = cpu_to_le32(0x9000001A), 1095 IO_REPARSE_TAG_CLOUD_1 = cpu_to_le32(0x9000101A), 1096 IO_REPARSE_TAG_CLOUD_2 = cpu_to_le32(0x9000201A), 1097 IO_REPARSE_TAG_CLOUD_3 = cpu_to_le32(0x9000301A), 1098 IO_REPARSE_TAG_CLOUD_4 = cpu_to_le32(0x9000401A), 1099 IO_REPARSE_TAG_CLOUD_5 = cpu_to_le32(0x9000501A), 1100 IO_REPARSE_TAG_CLOUD_6 = cpu_to_le32(0x9000601A), 1101 IO_REPARSE_TAG_CLOUD_7 = cpu_to_le32(0x9000701A), 1102 IO_REPARSE_TAG_CLOUD_8 = cpu_to_le32(0x9000801A), 1103 IO_REPARSE_TAG_CLOUD_9 = cpu_to_le32(0x9000901A), 1104 IO_REPARSE_TAG_CLOUD_A = cpu_to_le32(0x9000A01A), 1105 IO_REPARSE_TAG_CLOUD_B = cpu_to_le32(0x9000B01A), 1106 IO_REPARSE_TAG_CLOUD_C = cpu_to_le32(0x9000C01A), 1107 IO_REPARSE_TAG_CLOUD_D = cpu_to_le32(0x9000D01A), 1108 IO_REPARSE_TAG_CLOUD_E = cpu_to_le32(0x9000E01A), 1109 IO_REPARSE_TAG_CLOUD_F = cpu_to_le32(0x9000F01A), 1110 1111}; 1112 1113#define SYMLINK_FLAG_RELATIVE 1 1114 1115/* Microsoft reparse buffer. (see DDK for details) */ 1116struct REPARSE_DATA_BUFFER { 1117 __le32 ReparseTag; // 0x00: 1118 __le16 ReparseDataLength; // 0x04: 1119 __le16 Reserved; 1120 1121 union { 1122 /* If ReparseTag == 0xA0000003 (IO_REPARSE_TAG_MOUNT_POINT) */ 1123 struct { 1124 __le16 SubstituteNameOffset; // 0x08 1125 __le16 SubstituteNameLength; // 0x0A 1126 __le16 PrintNameOffset; // 0x0C 1127 __le16 PrintNameLength; // 0x0E 1128 __le16 PathBuffer[]; // 0x10 1129 } MountPointReparseBuffer; 1130 1131 /* 1132 * If ReparseTag == 0xA000000C (IO_REPARSE_TAG_SYMLINK) 1133 * https://msdn.microsoft.com/en-us/library/cc232006.aspx 1134 */ 1135 struct { 1136 __le16 SubstituteNameOffset; // 0x08 1137 __le16 SubstituteNameLength; // 0x0A 1138 __le16 PrintNameOffset; // 0x0C 1139 __le16 PrintNameLength; // 0x0E 1140 // 0-absolute path 1- relative path, SYMLINK_FLAG_RELATIVE 1141 __le32 Flags; // 0x10 1142 __le16 PathBuffer[]; // 0x14 1143 } SymbolicLinkReparseBuffer; 1144 1145 /* If ReparseTag == 0x80000017U */ 1146 struct { 1147 __le32 WofVersion; // 0x08 == 1 1148 /* 1149 * 1 - WIM backing provider ("WIMBoot"), 1150 * 2 - System compressed file provider 1151 */ 1152 __le32 WofProvider; // 0x0C: 1153 __le32 ProviderVer; // 0x10: == 1 WOF_FILE_PROVIDER_CURRENT_VERSION == 1 1154 __le32 CompressionFormat; // 0x14: 0, 1, 2, 3. See WOF_COMPRESSION_XXX 1155 } CompressReparseBuffer; 1156 1157 struct { 1158 u8 DataBuffer[1]; // 0x08: 1159 } GenericReparseBuffer; 1160 }; 1161}; 1162 1163/* ATTR_EA_INFO (0xD0) */ 1164 1165#define FILE_NEED_EA 0x80 // See ntifs.h 1166/* 1167 * FILE_NEED_EA, indicates that the file to which the EA belongs cannot be 1168 * interpreted without understanding the associated extended attributes. 1169 */ 1170struct EA_INFO { 1171 __le16 size_pack; // 0x00: Size of buffer to hold in packed form. 1172 __le16 count; // 0x02: Count of EA's with FILE_NEED_EA bit set. 1173 __le32 size; // 0x04: Size of buffer to hold in unpacked form. 1174}; 1175 1176static_assert(sizeof(struct EA_INFO) == 8); 1177 1178/* ATTR_EA (0xE0) */ 1179struct EA_FULL { 1180 __le32 size; // 0x00: (not in packed) 1181 u8 flags; // 0x04: 1182 u8 name_len; // 0x05: 1183 __le16 elength; // 0x06: 1184 u8 name[]; // 0x08: 1185}; 1186 1187static_assert(offsetof(struct EA_FULL, name) == 8); 1188 1189#define ACL_REVISION 2 1190#define ACL_REVISION_DS 4 1191 1192#define SE_SELF_RELATIVE cpu_to_le16(0x8000) 1193 1194struct SECURITY_DESCRIPTOR_RELATIVE { 1195 u8 Revision; 1196 u8 Sbz1; 1197 __le16 Control; 1198 __le32 Owner; 1199 __le32 Group; 1200 __le32 Sacl; 1201 __le32 Dacl; 1202}; 1203static_assert(sizeof(struct SECURITY_DESCRIPTOR_RELATIVE) == 0x14); 1204 1205struct ACE_HEADER { 1206 u8 AceType; 1207 u8 AceFlags; 1208 __le16 AceSize; 1209}; 1210static_assert(sizeof(struct ACE_HEADER) == 4); 1211 1212struct ACL { 1213 u8 AclRevision; 1214 u8 Sbz1; 1215 __le16 AclSize; 1216 __le16 AceCount; 1217 __le16 Sbz2; 1218}; 1219static_assert(sizeof(struct ACL) == 8); 1220 1221struct SID { 1222 u8 Revision; 1223 u8 SubAuthorityCount; 1224 u8 IdentifierAuthority[6]; 1225 __le32 SubAuthority[]; 1226}; 1227static_assert(offsetof(struct SID, SubAuthority) == 8); 1228 1229#endif /* _LINUX_NTFS3_NTFS_H */ 1230// clang-format on
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