1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * 4 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. 5 * 6 */ 7 8 // clang-format off 9 #ifndef _LINUX_NTFS3_NTFS_FS_H 10 #define _LINUX_NTFS3_NTFS_FS_H 11 12 #define MINUS_ONE_T ((size_t)(-1)) 13 /* Biggest MFT / smallest cluster */ 14 #define MAXIMUM_BYTES_PER_MFT 4096 15 #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) 16 17 #define MAXIMUM_BYTES_PER_INDEX 4096 18 #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) 19 20 /* NTFS specific error code when fixup failed. */ 21 #define E_NTFS_FIXUP 555 22 /* NTFS specific error code about resident->nonresident. */ 23 #define E_NTFS_NONRESIDENT 556 24 /* NTFS specific error code about punch hole. */ 25 #define E_NTFS_NOTALIGNED 557 26 27 28 /* sbi->flags */ 29 #define NTFS_FLAGS_NODISCARD 0x00000001 30 /* Set when LogFile is replaying. */ 31 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 32 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 33 #define NTFS_FLAGS_MFTMIRR 0x00001000 34 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 35 36 37 /* ni->ni_flags */ 38 /* 39 * Data attribute is external compressed (LZX/Xpress) 40 * 1 - WOF_COMPRESSION_XPRESS4K 41 * 2 - WOF_COMPRESSION_XPRESS8K 42 * 3 - WOF_COMPRESSION_XPRESS16K 43 * 4 - WOF_COMPRESSION_LZX32K 44 */ 45 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 46 /* Data attribute is deduplicated. */ 47 #define NI_FLAG_DEDUPLICATED 0x00000010 48 #define NI_FLAG_EA 0x00000020 49 #define NI_FLAG_DIR 0x00000040 50 #define NI_FLAG_RESIDENT 0x00000080 51 #define NI_FLAG_UPDATE_PARENT 0x00000100 52 // clang-format on 53 54 struct ntfs_mount_options { 55 struct nls_table *nls; 56 57 kuid_t fs_uid; 58 kgid_t fs_gid; 59 u16 fs_fmask_inv; 60 u16 fs_dmask_inv; 61 62 unsigned uid : 1, /* uid was set. */ 63 gid : 1, /* gid was set. */ 64 fmask : 1, /* fmask was set. */ 65 dmask : 1, /* dmask was set. */ 66 sys_immutable : 1, /* Immutable system files. */ 67 discard : 1, /* Issue discard requests on deletions. */ 68 sparse : 1, /* Create sparse files. */ 69 showmeta : 1, /* Show meta files. */ 70 nohidden : 1, /* Do not show hidden files. */ 71 force : 1, /* Rw mount dirty volume. */ 72 no_acs_rules : 1, /*Exclude acs rules. */ 73 prealloc : 1 /* Preallocate space when file is growing. */ 74 ; 75 }; 76 77 /* Special value to unpack and deallocate. */ 78 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 79 80 /* TODO: Use rb tree instead of array. */ 81 struct runs_tree { 82 struct ntfs_run *runs; 83 size_t count; /* Currently used size a ntfs_run storage. */ 84 size_t allocated; /* Currently allocated ntfs_run storage size. */ 85 }; 86 87 struct ntfs_buffers { 88 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 89 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 90 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 91 u32 bytes; 92 u32 nbufs; 93 u32 off; 94 }; 95 96 enum ALLOCATE_OPT { 97 ALLOCATE_DEF = 0, // Allocate all clusters. 98 ALLOCATE_MFT = 1, // Allocate for MFT. 99 }; 100 101 enum bitmap_mutex_classes { 102 BITMAP_MUTEX_CLUSTERS = 0, 103 BITMAP_MUTEX_MFT = 1, 104 }; 105 106 struct wnd_bitmap { 107 struct super_block *sb; 108 struct rw_semaphore rw_lock; 109 110 struct runs_tree run; 111 size_t nbits; 112 113 size_t total_zeroes; // Total number of free bits. 114 u16 *free_bits; // Free bits in each window. 115 size_t nwnd; 116 u32 bits_last; // Bits in last window. 117 118 struct rb_root start_tree; // Extents, sorted by 'start'. 119 struct rb_root count_tree; // Extents, sorted by 'count + start'. 120 size_t count; // Extents count. 121 122 /* 123 * -1 Tree is activated but not updated (too many fragments). 124 * 0 - Tree is not activated. 125 * 1 - Tree is activated and updated. 126 */ 127 int uptodated; 128 size_t extent_min; // Minimal extent used while building. 129 size_t extent_max; // Upper estimate of biggest free block. 130 131 /* Zone [bit, end) */ 132 size_t zone_bit; 133 size_t zone_end; 134 135 bool set_tail; // Not necessary in driver. 136 bool inited; 137 }; 138 139 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, 140 size_t len2, const void *param); 141 142 enum index_mutex_classed { 143 INDEX_MUTEX_I30 = 0, 144 INDEX_MUTEX_SII = 1, 145 INDEX_MUTEX_SDH = 2, 146 INDEX_MUTEX_SO = 3, 147 INDEX_MUTEX_SQ = 4, 148 INDEX_MUTEX_SR = 5, 149 INDEX_MUTEX_TOTAL 150 }; 151 152 /* ntfs_index - Allocation unit inside directory. */ 153 struct ntfs_index { 154 struct runs_tree bitmap_run; 155 struct runs_tree alloc_run; 156 /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ 157 struct rw_semaphore run_lock; 158 159 /*TODO: Remove 'cmp'. */ 160 NTFS_CMP_FUNC cmp; 161 162 u8 index_bits; // log2(root->index_block_size) 163 u8 idx2vbn_bits; // log2(root->index_block_clst) 164 u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits 165 u8 type; // index_mutex_classed 166 }; 167 168 /* Minimum MFT zone. */ 169 #define NTFS_MIN_MFT_ZONE 100 170 171 /* Ntfs file system in-core superblock data. */ 172 struct ntfs_sb_info { 173 struct super_block *sb; 174 175 u32 discard_granularity; 176 u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) 177 178 u32 cluster_size; // bytes per cluster 179 u32 cluster_mask; // == cluster_size - 1 180 u64 cluster_mask_inv; // ~(cluster_size - 1) 181 u32 block_mask; // sb->s_blocksize - 1 182 u32 blocks_per_cluster; // cluster_size / sb->s_blocksize 183 184 u32 record_size; 185 u32 sector_size; 186 u32 index_size; 187 188 u8 sector_bits; 189 u8 cluster_bits; 190 u8 record_bits; 191 192 u64 maxbytes; // Maximum size for normal files. 193 u64 maxbytes_sparse; // Maximum size for sparse file. 194 195 u32 flags; // See NTFS_FLAGS_XXX. 196 197 CLST bad_clusters; // The count of marked bad clusters. 198 199 u16 max_bytes_per_attr; // Maximum attribute size in record. 200 u16 attr_size_tr; // Attribute size threshold (320 bytes). 201 202 /* Records in $Extend. */ 203 CLST objid_no; 204 CLST quota_no; 205 CLST reparse_no; 206 CLST usn_jrnl_no; 207 208 struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. 209 u32 def_entries; 210 u32 ea_max_size; 211 212 struct MFT_REC *new_rec; 213 214 u16 *upcase; 215 216 struct { 217 u64 lbo, lbo2; 218 struct ntfs_inode *ni; 219 struct wnd_bitmap bitmap; // $MFT::Bitmap 220 /* 221 * MFT records [11-24) used to expand MFT itself. 222 * They always marked as used in $MFT::Bitmap 223 * 'reserved_bitmap' contains real bitmap of these records. 224 */ 225 ulong reserved_bitmap; // Bitmap of used records [11 - 24) 226 size_t next_free; // The next record to allocate from 227 size_t used; // MFT valid size in records. 228 u32 recs_mirr; // Number of records in MFTMirr 229 u8 next_reserved; 230 u8 reserved_bitmap_inited; 231 } mft; 232 233 struct { 234 struct wnd_bitmap bitmap; // $Bitmap::Data 235 CLST next_free_lcn; 236 } used; 237 238 struct { 239 u64 size; // In bytes. 240 u64 blocks; // In blocks. 241 u64 ser_num; 242 struct ntfs_inode *ni; 243 __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. 244 u8 major_ver; 245 u8 minor_ver; 246 char label[65]; 247 bool real_dirty; // Real fs state. 248 } volume; 249 250 struct { 251 struct ntfs_index index_sii; 252 struct ntfs_index index_sdh; 253 struct ntfs_inode *ni; 254 u32 next_id; 255 u64 next_off; 256 257 __le32 def_security_id; 258 } security; 259 260 struct { 261 struct ntfs_index index_r; 262 struct ntfs_inode *ni; 263 u64 max_size; // 16K 264 } reparse; 265 266 struct { 267 struct ntfs_index index_o; 268 struct ntfs_inode *ni; 269 } objid; 270 271 struct { 272 struct mutex mtx_lznt; 273 struct lznt *lznt; 274 #ifdef CONFIG_NTFS3_LZX_XPRESS 275 struct mutex mtx_xpress; 276 struct xpress_decompressor *xpress; 277 struct mutex mtx_lzx; 278 struct lzx_decompressor *lzx; 279 #endif 280 } compress; 281 282 struct ntfs_mount_options options; 283 struct ratelimit_state msg_ratelimit; 284 }; 285 286 /* One MFT record(usually 1024 bytes), consists of attributes. */ 287 struct mft_inode { 288 struct rb_node node; 289 struct ntfs_sb_info *sbi; 290 291 struct MFT_REC *mrec; 292 struct ntfs_buffers nb; 293 294 CLST rno; 295 bool dirty; 296 }; 297 298 /* Nested class for ntfs_inode::ni_lock. */ 299 enum ntfs_inode_mutex_lock_class { 300 NTFS_INODE_MUTEX_DIRTY, 301 NTFS_INODE_MUTEX_SECURITY, 302 NTFS_INODE_MUTEX_OBJID, 303 NTFS_INODE_MUTEX_REPARSE, 304 NTFS_INODE_MUTEX_NORMAL, 305 NTFS_INODE_MUTEX_PARENT, 306 }; 307 308 /* 309 * sturct ntfs_inode 310 * 311 * Ntfs inode - extends linux inode. consists of one or more MFT inodes. 312 */ 313 struct ntfs_inode { 314 struct mft_inode mi; // base record 315 316 /* 317 * Valid size: [0 - i_valid) - these range in file contains valid data. 318 * Range [i_valid - inode->i_size) - contains 0. 319 * Usually i_valid <= inode->i_size. 320 */ 321 u64 i_valid; 322 struct timespec64 i_crtime; 323 324 struct mutex ni_lock; 325 326 /* File attributes from std. */ 327 enum FILE_ATTRIBUTE std_fa; 328 __le32 std_security_id; 329 330 /* 331 * Tree of mft_inode. 332 * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes 333 * e.g. file becomes too fragmented or contains a lot of names. 334 */ 335 struct rb_root mi_tree; 336 337 /* 338 * This member is used in ntfs_readdir to ensure that all subrecords are loaded 339 */ 340 u8 mi_loaded; 341 342 union { 343 struct ntfs_index dir; 344 struct { 345 struct rw_semaphore run_lock; 346 struct runs_tree run; 347 #ifdef CONFIG_NTFS3_LZX_XPRESS 348 struct page *offs_page; 349 #endif 350 } file; 351 }; 352 353 struct { 354 struct runs_tree run; 355 struct ATTR_LIST_ENTRY *le; // 1K aligned memory. 356 size_t size; 357 bool dirty; 358 } attr_list; 359 360 size_t ni_flags; // NI_FLAG_XXX 361 362 struct inode vfs_inode; 363 }; 364 365 struct indx_node { 366 struct ntfs_buffers nb; 367 struct INDEX_BUFFER *index; 368 }; 369 370 struct ntfs_fnd { 371 int level; 372 struct indx_node *nodes[20]; 373 struct NTFS_DE *de[20]; 374 struct NTFS_DE *root_de; 375 }; 376 377 enum REPARSE_SIGN { 378 REPARSE_NONE = 0, 379 REPARSE_COMPRESSED = 1, 380 REPARSE_DEDUPLICATED = 2, 381 REPARSE_LINK = 3 382 }; 383 384 /* Functions from attrib.c */ 385 int attr_load_runs(struct ATTRIB *attr, struct ntfs_inode *ni, 386 struct runs_tree *run, const CLST *vcn); 387 int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, 388 CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, 389 enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, 390 CLST *new_lcn); 391 int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, 392 struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, 393 u64 new_size, struct runs_tree *run, 394 struct ATTRIB **ins_attr, struct page *page); 395 int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, 396 const __le16 *name, u8 name_len, struct runs_tree *run, 397 u64 new_size, const u64 *new_valid, bool keep_prealloc, 398 struct ATTRIB **ret); 399 int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, 400 CLST *len, bool *new); 401 int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); 402 int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); 403 int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, 404 const __le16 *name, u8 name_len, struct runs_tree *run, 405 CLST vcn); 406 int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, 407 const __le16 *name, u8 name_len, struct runs_tree *run, 408 u64 from, u64 to); 409 int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, 410 struct runs_tree *run, u64 frame, u64 frames, 411 u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); 412 int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, 413 CLST frame, CLST *clst_data); 414 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, 415 u64 new_valid); 416 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 417 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); 418 419 /* Functions from attrlist.c */ 420 void al_destroy(struct ntfs_inode *ni); 421 bool al_verify(struct ntfs_inode *ni); 422 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); 423 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, 424 struct ATTR_LIST_ENTRY *le); 425 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, 426 struct ATTR_LIST_ENTRY *le, 427 const struct ATTRIB *attr); 428 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, 429 struct ATTR_LIST_ENTRY *le, 430 enum ATTR_TYPE type, const __le16 *name, 431 u8 name_len, const CLST *vcn); 432 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, 433 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, 434 struct ATTR_LIST_ENTRY **new_le); 435 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); 436 bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, 437 const __le16 *name, size_t name_len, 438 const struct MFT_REF *ref); 439 int al_update(struct ntfs_inode *ni); 440 static inline size_t al_aligned(size_t size) 441 { 442 return (size + 1023) & ~(size_t)1023; 443 } 444 445 /* Globals from bitfunc.c */ 446 bool are_bits_clear(const ulong *map, size_t bit, size_t nbits); 447 bool are_bits_set(const ulong *map, size_t bit, size_t nbits); 448 size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits); 449 450 /* Globals from dir.c */ 451 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const struct le_str *uni, 452 u8 *buf, int buf_len); 453 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 454 struct cpu_str *uni, u32 max_ulen, 455 enum utf16_endian endian); 456 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 457 struct ntfs_fnd *fnd); 458 bool dir_is_empty(struct inode *dir); 459 extern const struct file_operations ntfs_dir_operations; 460 461 /* Globals from file.c */ 462 int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path, 463 struct kstat *stat, u32 request_mask, u32 flags); 464 void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, 465 CLST len); 466 int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 467 struct iattr *attr); 468 int ntfs_file_open(struct inode *inode, struct file *file); 469 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 470 __u64 start, __u64 len); 471 extern const struct inode_operations ntfs_special_inode_operations; 472 extern const struct inode_operations ntfs_file_inode_operations; 473 extern const struct file_operations ntfs_file_operations; 474 475 /* Globals from frecord.c */ 476 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 477 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 478 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 479 void ni_clear(struct ntfs_inode *ni); 480 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 481 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 482 struct mft_inode **mi); 483 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 484 struct ATTR_LIST_ENTRY **entry_o, 485 enum ATTR_TYPE type, const __le16 *name, 486 u8 name_len, const CLST *vcn, 487 struct mft_inode **mi); 488 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 489 struct ATTR_LIST_ENTRY **le, 490 struct mft_inode **mi); 491 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 492 const __le16 *name, u8 name_len, CLST vcn, 493 struct mft_inode **pmi); 494 int ni_load_all_mi(struct ntfs_inode *ni); 495 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 496 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 497 const __le16 *name, size_t name_len, bool base_only, 498 const __le16 *id); 499 int ni_create_attr_list(struct ntfs_inode *ni); 500 int ni_expand_list(struct ntfs_inode *ni); 501 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 502 const __le16 *name, u8 name_len, 503 const struct runs_tree *run, CLST svcn, CLST len, 504 __le16 flags, struct ATTRIB **new_attr, 505 struct mft_inode **mi); 506 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 507 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 508 struct ATTRIB **new_attr, struct mft_inode **mi, 509 struct ATTR_LIST_ENTRY **le); 510 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 511 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 512 int ni_delete_all(struct ntfs_inode *ni); 513 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 514 const struct cpu_str *uni, 515 const struct MFT_REF *home, 516 struct mft_inode **mi, 517 struct ATTR_LIST_ENTRY **entry); 518 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 519 struct mft_inode **mi, 520 struct ATTR_LIST_ENTRY **entry); 521 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 522 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 523 void *buffer); 524 int ni_write_inode(struct inode *inode, int sync, const char *hint); 525 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 526 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 527 __u64 vbo, __u64 len); 528 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); 529 int ni_decompress_file(struct ntfs_inode *ni); 530 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 531 u32 pages_per_frame); 532 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 533 u32 pages_per_frame); 534 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 535 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 536 537 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 538 struct NTFS_DE *de, struct NTFS_DE *de2, 539 int undo_step); 540 541 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 542 struct NTFS_DE *de); 543 544 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 545 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 546 bool *is_bad); 547 548 bool ni_is_dirty(struct inode *inode); 549 550 /* Globals from fslog.c */ 551 int log_replay(struct ntfs_inode *ni, bool *initialized); 552 553 /* Globals from fsntfs.c */ 554 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 555 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 556 bool simple); 557 int ntfs_extend_init(struct ntfs_sb_info *sbi); 558 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 559 const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi, 560 enum ATTR_TYPE Type); 561 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 562 CLST *new_lcn, CLST *new_len, 563 enum ALLOCATE_OPT opt); 564 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 565 struct ntfs_inode *ni, struct mft_inode **mi); 566 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno); 567 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 568 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 569 int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 570 enum NTFS_DIRTY_FLAGS { 571 NTFS_DIRTY_CLEAR = 0, 572 NTFS_DIRTY_DIRTY = 1, 573 NTFS_DIRTY_ERROR = 2, 574 }; 575 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 576 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); 577 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 578 const void *buffer, int wait); 579 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 580 u64 vbo, const void *buf, size_t bytes); 581 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 582 const struct runs_tree *run, u64 vbo); 583 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 584 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 585 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 586 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 587 struct ntfs_buffers *nb); 588 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 589 u32 bytes, struct ntfs_buffers *nb); 590 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 591 struct ntfs_buffers *nb, int sync); 592 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, 593 struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, 594 u32 op); 595 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 596 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 597 u64 vbo, u64 *lbo, u64 *bytes); 598 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 599 bool dir); 600 extern const u8 s_default_security[0x50]; 601 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 602 int ntfs_security_init(struct ntfs_sb_info *sbi); 603 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 604 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 605 size_t *size); 606 int ntfs_insert_security(struct ntfs_sb_info *sbi, 607 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 608 u32 size, __le32 *security_id, bool *inserted); 609 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 610 int ntfs_objid_init(struct ntfs_sb_info *sbi); 611 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 612 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 613 const struct MFT_REF *ref); 614 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 615 const struct MFT_REF *ref); 616 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 617 int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim); 618 619 /* Globals from index.c */ 620 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 621 void fnd_clear(struct ntfs_fnd *fnd); 622 static inline struct ntfs_fnd *fnd_get(void) 623 { 624 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 625 } 626 static inline void fnd_put(struct ntfs_fnd *fnd) 627 { 628 if (fnd) { 629 fnd_clear(fnd); 630 kfree(fnd); 631 } 632 } 633 void indx_clear(struct ntfs_index *idx); 634 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 635 const struct ATTRIB *attr, enum index_mutex_classed type); 636 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 637 struct ATTRIB **attr, struct mft_inode **mi); 638 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 639 struct indx_node **node); 640 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 641 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 642 const void *param, int *diff, struct NTFS_DE **entry, 643 struct ntfs_fnd *fnd); 644 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 645 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 646 struct ntfs_fnd *fnd); 647 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 648 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 649 size_t *off, struct ntfs_fnd *fnd); 650 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 651 const struct NTFS_DE *new_de, const void *param, 652 struct ntfs_fnd *fnd, bool undo); 653 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 654 const void *key, u32 key_len, const void *param); 655 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 656 const struct ATTR_FILE_NAME *fname, 657 const struct NTFS_DUP_INFO *dup, int sync); 658 659 /* Globals from inode.c */ 660 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 661 const struct cpu_str *name); 662 int ntfs_set_size(struct inode *inode, u64 new_size); 663 int reset_log_file(struct inode *inode); 664 int ntfs_get_block(struct inode *inode, sector_t vbn, 665 struct buffer_head *bh_result, int create); 666 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 667 int ntfs_sync_inode(struct inode *inode); 668 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, 669 struct inode *i2); 670 int inode_write_data(struct inode *inode, const void *data, size_t bytes); 671 struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, 672 struct inode *dir, struct dentry *dentry, 673 const struct cpu_str *uni, umode_t mode, 674 dev_t dev, const char *symname, u32 size, 675 struct ntfs_fnd *fnd); 676 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 677 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 678 void ntfs_evict_inode(struct inode *inode); 679 extern const struct inode_operations ntfs_link_inode_operations; 680 extern const struct address_space_operations ntfs_aops; 681 extern const struct address_space_operations ntfs_aops_cmpr; 682 683 /* Globals from name_i.c */ 684 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 685 const struct cpu_str *uni); 686 struct dentry *ntfs3_get_parent(struct dentry *child); 687 688 extern const struct inode_operations ntfs_dir_inode_operations; 689 extern const struct inode_operations ntfs_special_inode_operations; 690 691 /* Globals from record.c */ 692 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 693 void mi_put(struct mft_inode *mi); 694 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 695 int mi_read(struct mft_inode *mi, bool is_mft); 696 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); 697 // TODO: id? 698 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, 699 enum ATTR_TYPE type, const __le16 *name, 700 size_t name_len, const __le16 *id); 701 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, 702 struct ATTR_LIST_ENTRY *le) 703 { 704 return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, 705 &le->id); 706 } 707 int mi_write(struct mft_inode *mi, int wait); 708 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 709 __le16 flags, bool is_mft); 710 void mi_mark_free(struct mft_inode *mi); 711 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, 712 const __le16 *name, u8 name_len, u32 asize, 713 u16 name_off); 714 715 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 716 struct ATTRIB *attr); 717 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 718 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 719 struct runs_tree *run, CLST len); 720 static inline bool mi_is_ref(const struct mft_inode *mi, 721 const struct MFT_REF *ref) 722 { 723 if (le32_to_cpu(ref->low) != mi->rno) 724 return false; 725 if (ref->seq != mi->mrec->seq) 726 return false; 727 728 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 729 return le16_to_cpu(ref->high) == (mi->rno >> 32); 730 #else 731 return !ref->high; 732 #endif 733 } 734 735 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 736 { 737 ref->low = cpu_to_le32(mi->rno); 738 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 739 ref->high = cpu_to_le16(mi->rno >> 32); 740 #else 741 ref->high = 0; 742 #endif 743 ref->seq = mi->mrec->seq; 744 } 745 746 /* Globals from run.c */ 747 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 748 CLST *len, size_t *index); 749 void run_truncate(struct runs_tree *run, CLST vcn); 750 void run_truncate_head(struct runs_tree *run, CLST vcn); 751 void run_truncate_around(struct runs_tree *run, CLST vcn); 752 bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *Index); 753 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 754 bool is_mft); 755 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); 756 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 757 CLST *lcn, CLST *len); 758 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 759 760 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 761 u32 run_buf_size, CLST *packed_vcns); 762 int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 763 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 764 u32 run_buf_size); 765 766 #ifdef NTFS3_CHECK_FREE_CLST 767 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 768 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 769 u32 run_buf_size); 770 #else 771 #define run_unpack_ex run_unpack 772 #endif 773 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 774 775 /* Globals from super.c */ 776 void *ntfs_set_shared(void *ptr, u32 bytes); 777 void *ntfs_put_shared(void *ptr); 778 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 779 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 780 781 /* Globals from bitmap.c*/ 782 int __init ntfs3_init_bitmap(void); 783 void ntfs3_exit_bitmap(void); 784 void wnd_close(struct wnd_bitmap *wnd); 785 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 786 { 787 return wnd->total_zeroes; 788 } 789 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 790 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 791 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 792 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 793 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 794 795 /* Possible values for 'flags' 'wnd_find'. */ 796 #define BITMAP_FIND_MARK_AS_USED 0x01 797 #define BITMAP_FIND_FULL 0x02 798 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 799 size_t flags, size_t *allocated); 800 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 801 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 802 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 803 804 /* Globals from upcase.c */ 805 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 806 const u16 *upcase, bool bothcase); 807 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 808 const u16 *upcase, bool bothcase); 809 810 /* globals from xattr.c */ 811 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 812 struct posix_acl *ntfs_get_acl(struct inode *inode, int type, bool rcu); 813 int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, 814 struct posix_acl *acl, int type); 815 int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, 816 struct inode *dir); 817 #else 818 #define ntfs_get_acl NULL 819 #define ntfs_set_acl NULL 820 #endif 821 822 int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode); 823 int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode, 824 int mask); 825 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 826 extern const struct xattr_handler *ntfs_xattr_handlers[]; 827 828 int ntfs_save_wsl_perm(struct inode *inode); 829 void ntfs_get_wsl_perm(struct inode *inode); 830 831 /* globals from lznt.c */ 832 struct lznt *get_lznt_ctx(int level); 833 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 834 void *compressed, size_t compressed_size, 835 struct lznt *ctx); 836 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 837 void *uncompressed, size_t uncompressed_size); 838 839 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 840 { 841 return sbi->volume.major_ver >= 3; 842 } 843 844 /* (sb->s_flags & SB_ACTIVE) */ 845 static inline bool is_mounted(struct ntfs_sb_info *sbi) 846 { 847 return !!sbi->sb->s_root; 848 } 849 850 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 851 { 852 return rno < MFT_REC_FREE || rno == sbi->objid_no || 853 rno == sbi->quota_no || rno == sbi->reparse_no || 854 rno == sbi->usn_jrnl_no; 855 } 856 857 static inline void ntfs_unmap_page(struct page *page) 858 { 859 kunmap(page); 860 put_page(page); 861 } 862 863 static inline struct page *ntfs_map_page(struct address_space *mapping, 864 unsigned long index) 865 { 866 struct page *page = read_mapping_page(mapping, index, NULL); 867 868 if (!IS_ERR(page)) { 869 kmap(page); 870 if (!PageError(page)) 871 return page; 872 ntfs_unmap_page(page); 873 return ERR_PTR(-EIO); 874 } 875 return page; 876 } 877 878 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 879 { 880 return wnd->zone_bit; 881 } 882 883 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 884 { 885 return wnd->zone_end - wnd->zone_bit; 886 } 887 888 static inline void run_init(struct runs_tree *run) 889 { 890 run->runs = NULL; 891 run->count = 0; 892 run->allocated = 0; 893 } 894 895 static inline struct runs_tree *run_alloc(void) 896 { 897 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 898 } 899 900 static inline void run_close(struct runs_tree *run) 901 { 902 kvfree(run->runs); 903 memset(run, 0, sizeof(*run)); 904 } 905 906 static inline void run_free(struct runs_tree *run) 907 { 908 if (run) { 909 kvfree(run->runs); 910 kfree(run); 911 } 912 } 913 914 static inline bool run_is_empty(struct runs_tree *run) 915 { 916 return !run->count; 917 } 918 919 /* NTFS uses quad aligned bitmaps. */ 920 static inline size_t bitmap_size(size_t bits) 921 { 922 return ALIGN((bits + 7) >> 3, 8); 923 } 924 925 #define _100ns2seconds 10000000 926 #define SecondsToStartOf1970 0x00000002B6109100 927 928 #define NTFS_TIME_GRAN 100 929 930 /* 931 * kernel2nt - Converts in-memory kernel timestamp into nt time. 932 */ 933 static inline __le64 kernel2nt(const struct timespec64 *ts) 934 { 935 // 10^7 units of 100 nanoseconds one second 936 return cpu_to_le64(_100ns2seconds * 937 (ts->tv_sec + SecondsToStartOf1970) + 938 ts->tv_nsec / NTFS_TIME_GRAN); 939 } 940 941 /* 942 * nt2kernel - Converts on-disk nt time into kernel timestamp. 943 */ 944 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 945 { 946 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 947 948 // WARNING: do_div changes its first argument(!) 949 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 950 ts->tv_sec = t; 951 } 952 953 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 954 { 955 return sb->s_fs_info; 956 } 957 958 /* 959 * ntfs_up_cluster - Align up on cluster boundary. 960 */ 961 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 962 { 963 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 964 } 965 966 /* 967 * ntfs_up_block - Align up on cluster boundary. 968 */ 969 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 970 { 971 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 972 } 973 974 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 975 { 976 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 977 } 978 979 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 980 { 981 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 982 } 983 984 static inline struct buffer_head *ntfs_bread(struct super_block *sb, 985 sector_t block) 986 { 987 struct buffer_head *bh = sb_bread(sb, block); 988 989 if (bh) 990 return bh; 991 992 ntfs_err(sb, "failed to read volume at offset 0x%llx", 993 (u64)block << sb->s_blocksize_bits); 994 return NULL; 995 } 996 997 static inline struct ntfs_inode *ntfs_i(struct inode *inode) 998 { 999 return container_of(inode, struct ntfs_inode, vfs_inode); 1000 } 1001 1002 static inline bool is_compressed(const struct ntfs_inode *ni) 1003 { 1004 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1005 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1006 } 1007 1008 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1009 { 1010 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1011 } 1012 1013 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1014 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1015 { 1016 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1017 } 1018 1019 static inline bool is_dedup(const struct ntfs_inode *ni) 1020 { 1021 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1022 } 1023 1024 static inline bool is_encrypted(const struct ntfs_inode *ni) 1025 { 1026 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1027 } 1028 1029 static inline bool is_sparsed(const struct ntfs_inode *ni) 1030 { 1031 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1032 } 1033 1034 static inline int is_resident(struct ntfs_inode *ni) 1035 { 1036 return ni->ni_flags & NI_FLAG_RESIDENT; 1037 } 1038 1039 static inline void le16_sub_cpu(__le16 *var, u16 val) 1040 { 1041 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1042 } 1043 1044 static inline void le32_sub_cpu(__le32 *var, u32 val) 1045 { 1046 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1047 } 1048 1049 static inline void nb_put(struct ntfs_buffers *nb) 1050 { 1051 u32 i, nbufs = nb->nbufs; 1052 1053 if (!nbufs) 1054 return; 1055 1056 for (i = 0; i < nbufs; i++) 1057 put_bh(nb->bh[i]); 1058 nb->nbufs = 0; 1059 } 1060 1061 static inline void put_indx_node(struct indx_node *in) 1062 { 1063 if (!in) 1064 return; 1065 1066 kfree(in->index); 1067 nb_put(&in->nb); 1068 kfree(in); 1069 } 1070 1071 static inline void mi_clear(struct mft_inode *mi) 1072 { 1073 nb_put(&mi->nb); 1074 kfree(mi->mrec); 1075 mi->mrec = NULL; 1076 } 1077 1078 static inline void ni_lock(struct ntfs_inode *ni) 1079 { 1080 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1081 } 1082 1083 static inline void ni_lock_dir(struct ntfs_inode *ni) 1084 { 1085 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1086 } 1087 1088 static inline void ni_unlock(struct ntfs_inode *ni) 1089 { 1090 mutex_unlock(&ni->ni_lock); 1091 } 1092 1093 static inline int ni_trylock(struct ntfs_inode *ni) 1094 { 1095 return mutex_trylock(&ni->ni_lock); 1096 } 1097 1098 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1099 struct ATTRIB *attr, 1100 struct runs_tree *run, CLST vcn) 1101 { 1102 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1103 attr->name_len, run, vcn); 1104 } 1105 1106 static inline void le64_sub_cpu(__le64 *var, u64 val) 1107 { 1108 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1109 } 1110 1111 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1112