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 #include <linux/blkdev.h> 13 #include <linux/buffer_head.h> 14 #include <linux/cleancache.h> 15 #include <linux/fs.h> 16 #include <linux/highmem.h> 17 #include <linux/kernel.h> 18 #include <linux/mm.h> 19 #include <linux/mutex.h> 20 #include <linux/page-flags.h> 21 #include <linux/pagemap.h> 22 #include <linux/rbtree.h> 23 #include <linux/rwsem.h> 24 #include <linux/slab.h> 25 #include <linux/string.h> 26 #include <linux/time64.h> 27 #include <linux/types.h> 28 #include <linux/uidgid.h> 29 #include <asm/div64.h> 30 #include <asm/page.h> 31 32 #include "debug.h" 33 #include "ntfs.h" 34 35 struct dentry; 36 struct fiemap_extent_info; 37 struct user_namespace; 38 struct page; 39 struct writeback_control; 40 enum utf16_endian; 41 42 43 #define MINUS_ONE_T ((size_t)(-1)) 44 /* Biggest MFT / smallest cluster */ 45 #define MAXIMUM_BYTES_PER_MFT 4096 46 #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) 47 48 #define MAXIMUM_BYTES_PER_INDEX 4096 49 #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) 50 51 /* NTFS specific error code when fixup failed. */ 52 #define E_NTFS_FIXUP 555 53 /* NTFS specific error code about resident->nonresident. */ 54 #define E_NTFS_NONRESIDENT 556 55 /* NTFS specific error code about punch hole. */ 56 #define E_NTFS_NOTALIGNED 557 57 58 59 /* sbi->flags */ 60 #define NTFS_FLAGS_NODISCARD 0x00000001 61 /* Set when LogFile is replaying. */ 62 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 63 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 64 #define NTFS_FLAGS_MFTMIRR 0x00001000 65 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 66 67 68 /* ni->ni_flags */ 69 /* 70 * Data attribute is external compressed (LZX/Xpress) 71 * 1 - WOF_COMPRESSION_XPRESS4K 72 * 2 - WOF_COMPRESSION_XPRESS8K 73 * 3 - WOF_COMPRESSION_XPRESS16K 74 * 4 - WOF_COMPRESSION_LZX32K 75 */ 76 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 77 /* Data attribute is deduplicated. */ 78 #define NI_FLAG_DEDUPLICATED 0x00000010 79 #define NI_FLAG_EA 0x00000020 80 #define NI_FLAG_DIR 0x00000040 81 #define NI_FLAG_RESIDENT 0x00000080 82 #define NI_FLAG_UPDATE_PARENT 0x00000100 83 // clang-format on 84 85 struct ntfs_mount_options { 86 char *nls_name; 87 struct nls_table *nls; 88 89 kuid_t fs_uid; 90 kgid_t fs_gid; 91 u16 fs_fmask_inv; 92 u16 fs_dmask_inv; 93 94 unsigned fmask : 1; /* fmask was set. */ 95 unsigned dmask : 1; /*dmask was set. */ 96 unsigned sys_immutable : 1; /* Immutable system files. */ 97 unsigned discard : 1; /* Issue discard requests on deletions. */ 98 unsigned sparse : 1; /* Create sparse files. */ 99 unsigned showmeta : 1; /* Show meta files. */ 100 unsigned nohidden : 1; /* Do not show hidden files. */ 101 unsigned force : 1; /* RW mount dirty volume. */ 102 unsigned noacsrules : 1; /* Exclude acs rules. */ 103 unsigned prealloc : 1; /* Preallocate space when file is growing. */ 104 }; 105 106 /* Special value to unpack and deallocate. */ 107 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 108 109 /* TODO: Use rb tree instead of array. */ 110 struct runs_tree { 111 struct ntfs_run *runs; 112 size_t count; /* Currently used size a ntfs_run storage. */ 113 size_t allocated; /* Currently allocated ntfs_run storage size. */ 114 }; 115 116 struct ntfs_buffers { 117 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 118 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 119 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 120 u32 bytes; 121 u32 nbufs; 122 u32 off; 123 }; 124 125 enum ALLOCATE_OPT { 126 ALLOCATE_DEF = 0, // Allocate all clusters. 127 ALLOCATE_MFT = 1, // Allocate for MFT. 128 }; 129 130 enum bitmap_mutex_classes { 131 BITMAP_MUTEX_CLUSTERS = 0, 132 BITMAP_MUTEX_MFT = 1, 133 }; 134 135 struct wnd_bitmap { 136 struct super_block *sb; 137 struct rw_semaphore rw_lock; 138 139 struct runs_tree run; 140 size_t nbits; 141 142 size_t total_zeroes; // Total number of free bits. 143 u16 *free_bits; // Free bits in each window. 144 size_t nwnd; 145 u32 bits_last; // Bits in last window. 146 147 struct rb_root start_tree; // Extents, sorted by 'start'. 148 struct rb_root count_tree; // Extents, sorted by 'count + start'. 149 size_t count; // Extents count. 150 151 /* 152 * -1 Tree is activated but not updated (too many fragments). 153 * 0 - Tree is not activated. 154 * 1 - Tree is activated and updated. 155 */ 156 int uptodated; 157 size_t extent_min; // Minimal extent used while building. 158 size_t extent_max; // Upper estimate of biggest free block. 159 160 /* Zone [bit, end) */ 161 size_t zone_bit; 162 size_t zone_end; 163 164 bool set_tail; // Not necessary in driver. 165 bool inited; 166 }; 167 168 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, 169 size_t len2, const void *param); 170 171 enum index_mutex_classed { 172 INDEX_MUTEX_I30 = 0, 173 INDEX_MUTEX_SII = 1, 174 INDEX_MUTEX_SDH = 2, 175 INDEX_MUTEX_SO = 3, 176 INDEX_MUTEX_SQ = 4, 177 INDEX_MUTEX_SR = 5, 178 INDEX_MUTEX_TOTAL 179 }; 180 181 /* ntfs_index - Allocation unit inside directory. */ 182 struct ntfs_index { 183 struct runs_tree bitmap_run; 184 struct runs_tree alloc_run; 185 /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ 186 struct rw_semaphore run_lock; 187 188 /*TODO: Remove 'cmp'. */ 189 NTFS_CMP_FUNC cmp; 190 191 u8 index_bits; // log2(root->index_block_size) 192 u8 idx2vbn_bits; // log2(root->index_block_clst) 193 u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits 194 u8 type; // index_mutex_classed 195 }; 196 197 /* Minimum MFT zone. */ 198 #define NTFS_MIN_MFT_ZONE 100 199 200 /* Ntfs file system in-core superblock data. */ 201 struct ntfs_sb_info { 202 struct super_block *sb; 203 204 u32 discard_granularity; 205 u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) 206 207 u32 cluster_size; // bytes per cluster 208 u32 cluster_mask; // == cluster_size - 1 209 u64 cluster_mask_inv; // ~(cluster_size - 1) 210 u32 block_mask; // sb->s_blocksize - 1 211 u32 blocks_per_cluster; // cluster_size / sb->s_blocksize 212 213 u32 record_size; 214 u32 index_size; 215 216 u8 cluster_bits; 217 u8 record_bits; 218 219 u64 maxbytes; // Maximum size for normal files. 220 u64 maxbytes_sparse; // Maximum size for sparse file. 221 222 u32 flags; // See NTFS_FLAGS_XXX. 223 224 CLST bad_clusters; // The count of marked bad clusters. 225 226 u16 max_bytes_per_attr; // Maximum attribute size in record. 227 u16 attr_size_tr; // Attribute size threshold (320 bytes). 228 229 /* Records in $Extend. */ 230 CLST objid_no; 231 CLST quota_no; 232 CLST reparse_no; 233 CLST usn_jrnl_no; 234 235 struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. 236 u32 def_entries; 237 u32 ea_max_size; 238 239 struct MFT_REC *new_rec; 240 241 u16 *upcase; 242 243 struct { 244 u64 lbo, lbo2; 245 struct ntfs_inode *ni; 246 struct wnd_bitmap bitmap; // $MFT::Bitmap 247 /* 248 * MFT records [11-24) used to expand MFT itself. 249 * They always marked as used in $MFT::Bitmap 250 * 'reserved_bitmap' contains real bitmap of these records. 251 */ 252 ulong reserved_bitmap; // Bitmap of used records [11 - 24) 253 size_t next_free; // The next record to allocate from 254 size_t used; // MFT valid size in records. 255 u32 recs_mirr; // Number of records in MFTMirr 256 u8 next_reserved; 257 u8 reserved_bitmap_inited; 258 } mft; 259 260 struct { 261 struct wnd_bitmap bitmap; // $Bitmap::Data 262 CLST next_free_lcn; 263 } used; 264 265 struct { 266 u64 size; // In bytes. 267 u64 blocks; // In blocks. 268 u64 ser_num; 269 struct ntfs_inode *ni; 270 __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. 271 u8 major_ver; 272 u8 minor_ver; 273 char label[65]; 274 bool real_dirty; // Real fs state. 275 } volume; 276 277 struct { 278 struct ntfs_index index_sii; 279 struct ntfs_index index_sdh; 280 struct ntfs_inode *ni; 281 u32 next_id; 282 u64 next_off; 283 284 __le32 def_security_id; 285 } security; 286 287 struct { 288 struct ntfs_index index_r; 289 struct ntfs_inode *ni; 290 u64 max_size; // 16K 291 } reparse; 292 293 struct { 294 struct ntfs_index index_o; 295 struct ntfs_inode *ni; 296 } objid; 297 298 struct { 299 struct mutex mtx_lznt; 300 struct lznt *lznt; 301 #ifdef CONFIG_NTFS3_LZX_XPRESS 302 struct mutex mtx_xpress; 303 struct xpress_decompressor *xpress; 304 struct mutex mtx_lzx; 305 struct lzx_decompressor *lzx; 306 #endif 307 } compress; 308 309 struct ntfs_mount_options *options; 310 struct ratelimit_state msg_ratelimit; 311 }; 312 313 /* One MFT record(usually 1024 bytes), consists of attributes. */ 314 struct mft_inode { 315 struct rb_node node; 316 struct ntfs_sb_info *sbi; 317 318 struct MFT_REC *mrec; 319 struct ntfs_buffers nb; 320 321 CLST rno; 322 bool dirty; 323 }; 324 325 /* Nested class for ntfs_inode::ni_lock. */ 326 enum ntfs_inode_mutex_lock_class { 327 NTFS_INODE_MUTEX_DIRTY, 328 NTFS_INODE_MUTEX_SECURITY, 329 NTFS_INODE_MUTEX_OBJID, 330 NTFS_INODE_MUTEX_REPARSE, 331 NTFS_INODE_MUTEX_NORMAL, 332 NTFS_INODE_MUTEX_PARENT, 333 }; 334 335 /* 336 * sturct ntfs_inode 337 * 338 * Ntfs inode - extends linux inode. consists of one or more MFT inodes. 339 */ 340 struct ntfs_inode { 341 struct mft_inode mi; // base record 342 343 /* 344 * Valid size: [0 - i_valid) - these range in file contains valid data. 345 * Range [i_valid - inode->i_size) - contains 0. 346 * Usually i_valid <= inode->i_size. 347 */ 348 u64 i_valid; 349 struct timespec64 i_crtime; 350 351 struct mutex ni_lock; 352 353 /* File attributes from std. */ 354 enum FILE_ATTRIBUTE std_fa; 355 __le32 std_security_id; 356 357 /* 358 * Tree of mft_inode. 359 * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes 360 * e.g. file becomes too fragmented or contains a lot of names. 361 */ 362 struct rb_root mi_tree; 363 364 /* 365 * This member is used in ntfs_readdir to ensure that all subrecords are loaded 366 */ 367 u8 mi_loaded; 368 369 union { 370 struct ntfs_index dir; 371 struct { 372 struct rw_semaphore run_lock; 373 struct runs_tree run; 374 #ifdef CONFIG_NTFS3_LZX_XPRESS 375 struct page *offs_page; 376 #endif 377 } file; 378 }; 379 380 struct { 381 struct runs_tree run; 382 struct ATTR_LIST_ENTRY *le; // 1K aligned memory. 383 size_t size; 384 bool dirty; 385 } attr_list; 386 387 size_t ni_flags; // NI_FLAG_XXX 388 389 struct inode vfs_inode; 390 }; 391 392 struct indx_node { 393 struct ntfs_buffers nb; 394 struct INDEX_BUFFER *index; 395 }; 396 397 struct ntfs_fnd { 398 int level; 399 struct indx_node *nodes[20]; 400 struct NTFS_DE *de[20]; 401 struct NTFS_DE *root_de; 402 }; 403 404 enum REPARSE_SIGN { 405 REPARSE_NONE = 0, 406 REPARSE_COMPRESSED = 1, 407 REPARSE_DEDUPLICATED = 2, 408 REPARSE_LINK = 3 409 }; 410 411 /* Functions from attrib.c */ 412 int attr_load_runs(struct ATTRIB *attr, struct ntfs_inode *ni, 413 struct runs_tree *run, const CLST *vcn); 414 int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, 415 CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, 416 enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, 417 CLST *new_lcn); 418 int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, 419 struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, 420 u64 new_size, struct runs_tree *run, 421 struct ATTRIB **ins_attr, struct page *page); 422 int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, 423 const __le16 *name, u8 name_len, struct runs_tree *run, 424 u64 new_size, const u64 *new_valid, bool keep_prealloc, 425 struct ATTRIB **ret); 426 int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, 427 CLST *len, bool *new); 428 int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); 429 int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); 430 int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, 431 const __le16 *name, u8 name_len, struct runs_tree *run, 432 CLST vcn); 433 int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, 434 const __le16 *name, u8 name_len, struct runs_tree *run, 435 u64 from, u64 to); 436 int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, 437 struct runs_tree *run, u64 frame, u64 frames, 438 u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); 439 int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, 440 CLST frame, CLST *clst_data); 441 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, 442 u64 new_valid); 443 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 444 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); 445 446 /* Functions from attrlist.c */ 447 void al_destroy(struct ntfs_inode *ni); 448 bool al_verify(struct ntfs_inode *ni); 449 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); 450 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, 451 struct ATTR_LIST_ENTRY *le); 452 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, 453 struct ATTR_LIST_ENTRY *le, 454 const struct ATTRIB *attr); 455 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, 456 struct ATTR_LIST_ENTRY *le, 457 enum ATTR_TYPE type, const __le16 *name, 458 u8 name_len, const CLST *vcn); 459 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, 460 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, 461 struct ATTR_LIST_ENTRY **new_le); 462 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); 463 bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, 464 const __le16 *name, size_t name_len, 465 const struct MFT_REF *ref); 466 int al_update(struct ntfs_inode *ni, int sync); 467 static inline size_t al_aligned(size_t size) 468 { 469 return (size + 1023) & ~(size_t)1023; 470 } 471 472 /* Globals from bitfunc.c */ 473 bool are_bits_clear(const ulong *map, size_t bit, size_t nbits); 474 bool are_bits_set(const ulong *map, size_t bit, size_t nbits); 475 size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits); 476 477 /* Globals from dir.c */ 478 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, 479 u8 *buf, int buf_len); 480 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 481 struct cpu_str *uni, u32 max_ulen, 482 enum utf16_endian endian); 483 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 484 struct ntfs_fnd *fnd); 485 bool dir_is_empty(struct inode *dir); 486 extern const struct file_operations ntfs_dir_operations; 487 488 /* Globals from file.c */ 489 int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path, 490 struct kstat *stat, u32 request_mask, u32 flags); 491 void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, 492 CLST len); 493 int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 494 struct iattr *attr); 495 int ntfs_file_open(struct inode *inode, struct file *file); 496 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 497 __u64 start, __u64 len); 498 extern const struct inode_operations ntfs_special_inode_operations; 499 extern const struct inode_operations ntfs_file_inode_operations; 500 extern const struct file_operations ntfs_file_operations; 501 502 /* Globals from frecord.c */ 503 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 504 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 505 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 506 void ni_clear(struct ntfs_inode *ni); 507 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 508 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 509 struct mft_inode **mi); 510 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 511 struct ATTR_LIST_ENTRY **entry_o, 512 enum ATTR_TYPE type, const __le16 *name, 513 u8 name_len, const CLST *vcn, 514 struct mft_inode **mi); 515 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 516 struct ATTR_LIST_ENTRY **le, 517 struct mft_inode **mi); 518 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 519 const __le16 *name, u8 name_len, CLST vcn, 520 struct mft_inode **pmi); 521 int ni_load_all_mi(struct ntfs_inode *ni); 522 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 523 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 524 const __le16 *name, size_t name_len, bool base_only, 525 const __le16 *id); 526 int ni_create_attr_list(struct ntfs_inode *ni); 527 int ni_expand_list(struct ntfs_inode *ni); 528 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 529 const __le16 *name, u8 name_len, 530 const struct runs_tree *run, CLST svcn, CLST len, 531 __le16 flags, struct ATTRIB **new_attr, 532 struct mft_inode **mi); 533 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 534 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 535 struct ATTRIB **new_attr, struct mft_inode **mi, 536 struct ATTR_LIST_ENTRY **le); 537 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 538 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 539 int ni_delete_all(struct ntfs_inode *ni); 540 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 541 const struct cpu_str *uni, 542 const struct MFT_REF *home, 543 struct mft_inode **mi, 544 struct ATTR_LIST_ENTRY **entry); 545 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 546 struct mft_inode **mi, 547 struct ATTR_LIST_ENTRY **entry); 548 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 549 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 550 struct REPARSE_DATA_BUFFER *buffer); 551 int ni_write_inode(struct inode *inode, int sync, const char *hint); 552 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 553 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 554 __u64 vbo, __u64 len); 555 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); 556 int ni_decompress_file(struct ntfs_inode *ni); 557 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 558 u32 pages_per_frame); 559 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 560 u32 pages_per_frame); 561 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 562 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 563 564 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 565 struct NTFS_DE *de, struct NTFS_DE *de2, 566 int undo_step); 567 568 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 569 struct NTFS_DE *de); 570 571 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 572 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 573 bool *is_bad); 574 575 bool ni_is_dirty(struct inode *inode); 576 577 /* Globals from fslog.c */ 578 int log_replay(struct ntfs_inode *ni, bool *initialized); 579 580 /* Globals from fsntfs.c */ 581 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 582 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 583 bool simple); 584 int ntfs_extend_init(struct ntfs_sb_info *sbi); 585 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 586 const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi, 587 enum ATTR_TYPE Type); 588 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 589 CLST *new_lcn, CLST *new_len, 590 enum ALLOCATE_OPT opt); 591 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 592 struct ntfs_inode *ni, struct mft_inode **mi); 593 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno); 594 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 595 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 596 int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 597 enum NTFS_DIRTY_FLAGS { 598 NTFS_DIRTY_CLEAR = 0, 599 NTFS_DIRTY_DIRTY = 1, 600 NTFS_DIRTY_ERROR = 2, 601 }; 602 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 603 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); 604 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 605 const void *buffer, int wait); 606 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 607 u64 vbo, const void *buf, size_t bytes, int sync); 608 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 609 const struct runs_tree *run, u64 vbo); 610 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 611 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 612 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 613 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 614 struct ntfs_buffers *nb); 615 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 616 u32 bytes, struct ntfs_buffers *nb); 617 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 618 struct ntfs_buffers *nb, int sync); 619 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, 620 struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, 621 u32 op); 622 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 623 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 624 u64 vbo, u64 *lbo, u64 *bytes); 625 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 626 bool dir); 627 extern const u8 s_default_security[0x50]; 628 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 629 int ntfs_security_init(struct ntfs_sb_info *sbi); 630 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 631 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 632 size_t *size); 633 int ntfs_insert_security(struct ntfs_sb_info *sbi, 634 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 635 u32 size, __le32 *security_id, bool *inserted); 636 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 637 int ntfs_objid_init(struct ntfs_sb_info *sbi); 638 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 639 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 640 const struct MFT_REF *ref); 641 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 642 const struct MFT_REF *ref); 643 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 644 int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim); 645 646 /* Globals from index.c */ 647 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 648 void fnd_clear(struct ntfs_fnd *fnd); 649 static inline struct ntfs_fnd *fnd_get(void) 650 { 651 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 652 } 653 static inline void fnd_put(struct ntfs_fnd *fnd) 654 { 655 if (fnd) { 656 fnd_clear(fnd); 657 kfree(fnd); 658 } 659 } 660 void indx_clear(struct ntfs_index *idx); 661 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 662 const struct ATTRIB *attr, enum index_mutex_classed type); 663 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 664 struct ATTRIB **attr, struct mft_inode **mi); 665 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 666 struct indx_node **node); 667 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 668 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 669 const void *param, int *diff, struct NTFS_DE **entry, 670 struct ntfs_fnd *fnd); 671 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 672 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 673 struct ntfs_fnd *fnd); 674 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 675 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 676 size_t *off, struct ntfs_fnd *fnd); 677 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 678 const struct NTFS_DE *new_de, const void *param, 679 struct ntfs_fnd *fnd, bool undo); 680 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 681 const void *key, u32 key_len, const void *param); 682 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 683 const struct ATTR_FILE_NAME *fname, 684 const struct NTFS_DUP_INFO *dup, int sync); 685 686 /* Globals from inode.c */ 687 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 688 const struct cpu_str *name); 689 int ntfs_set_size(struct inode *inode, u64 new_size); 690 int reset_log_file(struct inode *inode); 691 int ntfs_get_block(struct inode *inode, sector_t vbn, 692 struct buffer_head *bh_result, int create); 693 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 694 int ntfs_sync_inode(struct inode *inode); 695 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, 696 struct inode *i2); 697 int inode_write_data(struct inode *inode, const void *data, size_t bytes); 698 struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, 699 struct inode *dir, struct dentry *dentry, 700 const struct cpu_str *uni, umode_t mode, 701 dev_t dev, const char *symname, u32 size, 702 struct ntfs_fnd *fnd); 703 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 704 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 705 void ntfs_evict_inode(struct inode *inode); 706 extern const struct inode_operations ntfs_link_inode_operations; 707 extern const struct address_space_operations ntfs_aops; 708 extern const struct address_space_operations ntfs_aops_cmpr; 709 710 /* Globals from name_i.c */ 711 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 712 const struct cpu_str *uni); 713 struct dentry *ntfs3_get_parent(struct dentry *child); 714 715 extern const struct inode_operations ntfs_dir_inode_operations; 716 extern const struct inode_operations ntfs_special_inode_operations; 717 718 /* Globals from record.c */ 719 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 720 void mi_put(struct mft_inode *mi); 721 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 722 int mi_read(struct mft_inode *mi, bool is_mft); 723 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); 724 // TODO: id? 725 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, 726 enum ATTR_TYPE type, const __le16 *name, 727 size_t name_len, const __le16 *id); 728 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, 729 struct ATTR_LIST_ENTRY *le) 730 { 731 return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, 732 &le->id); 733 } 734 int mi_write(struct mft_inode *mi, int wait); 735 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 736 __le16 flags, bool is_mft); 737 void mi_mark_free(struct mft_inode *mi); 738 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, 739 const __le16 *name, u8 name_len, u32 asize, 740 u16 name_off); 741 742 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 743 struct ATTRIB *attr); 744 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 745 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 746 struct runs_tree *run, CLST len); 747 static inline bool mi_is_ref(const struct mft_inode *mi, 748 const struct MFT_REF *ref) 749 { 750 if (le32_to_cpu(ref->low) != mi->rno) 751 return false; 752 if (ref->seq != mi->mrec->seq) 753 return false; 754 755 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 756 return le16_to_cpu(ref->high) == (mi->rno >> 32); 757 #else 758 return !ref->high; 759 #endif 760 } 761 762 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 763 { 764 ref->low = cpu_to_le32(mi->rno); 765 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 766 ref->high = cpu_to_le16(mi->rno >> 32); 767 #else 768 ref->high = 0; 769 #endif 770 ref->seq = mi->mrec->seq; 771 } 772 773 /* Globals from run.c */ 774 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 775 CLST *len, size_t *index); 776 void run_truncate(struct runs_tree *run, CLST vcn); 777 void run_truncate_head(struct runs_tree *run, CLST vcn); 778 void run_truncate_around(struct runs_tree *run, CLST vcn); 779 bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *Index); 780 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 781 bool is_mft); 782 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); 783 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 784 CLST *lcn, CLST *len); 785 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 786 787 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 788 u32 run_buf_size, CLST *packed_vcns); 789 int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 790 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 791 u32 run_buf_size); 792 793 #ifdef NTFS3_CHECK_FREE_CLST 794 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 795 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 796 u32 run_buf_size); 797 #else 798 #define run_unpack_ex run_unpack 799 #endif 800 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 801 802 /* Globals from super.c */ 803 void *ntfs_set_shared(void *ptr, u32 bytes); 804 void *ntfs_put_shared(void *ptr); 805 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 806 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 807 808 /* Globals from bitmap.c*/ 809 int __init ntfs3_init_bitmap(void); 810 void ntfs3_exit_bitmap(void); 811 void wnd_close(struct wnd_bitmap *wnd); 812 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 813 { 814 return wnd->total_zeroes; 815 } 816 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 817 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 818 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 819 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 820 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 821 822 /* Possible values for 'flags' 'wnd_find'. */ 823 #define BITMAP_FIND_MARK_AS_USED 0x01 824 #define BITMAP_FIND_FULL 0x02 825 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 826 size_t flags, size_t *allocated); 827 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 828 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 829 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 830 831 /* Globals from upcase.c */ 832 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 833 const u16 *upcase, bool bothcase); 834 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 835 const u16 *upcase, bool bothcase); 836 837 /* globals from xattr.c */ 838 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 839 struct posix_acl *ntfs_get_acl(struct inode *inode, int type, bool rcu); 840 int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, 841 struct posix_acl *acl, int type); 842 int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, 843 struct inode *dir); 844 #else 845 #define ntfs_get_acl NULL 846 #define ntfs_set_acl NULL 847 #endif 848 849 int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode); 850 int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode, 851 int mask); 852 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 853 extern const struct xattr_handler *ntfs_xattr_handlers[]; 854 855 int ntfs_save_wsl_perm(struct inode *inode); 856 void ntfs_get_wsl_perm(struct inode *inode); 857 858 /* globals from lznt.c */ 859 struct lznt *get_lznt_ctx(int level); 860 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 861 void *compressed, size_t compressed_size, 862 struct lznt *ctx); 863 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 864 void *uncompressed, size_t uncompressed_size); 865 866 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 867 { 868 return sbi->volume.major_ver >= 3; 869 } 870 871 /* (sb->s_flags & SB_ACTIVE) */ 872 static inline bool is_mounted(struct ntfs_sb_info *sbi) 873 { 874 return !!sbi->sb->s_root; 875 } 876 877 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 878 { 879 return rno < MFT_REC_FREE || rno == sbi->objid_no || 880 rno == sbi->quota_no || rno == sbi->reparse_no || 881 rno == sbi->usn_jrnl_no; 882 } 883 884 static inline void ntfs_unmap_page(struct page *page) 885 { 886 kunmap(page); 887 put_page(page); 888 } 889 890 static inline struct page *ntfs_map_page(struct address_space *mapping, 891 unsigned long index) 892 { 893 struct page *page = read_mapping_page(mapping, index, NULL); 894 895 if (!IS_ERR(page)) { 896 kmap(page); 897 if (!PageError(page)) 898 return page; 899 ntfs_unmap_page(page); 900 return ERR_PTR(-EIO); 901 } 902 return page; 903 } 904 905 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 906 { 907 return wnd->zone_bit; 908 } 909 910 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 911 { 912 return wnd->zone_end - wnd->zone_bit; 913 } 914 915 static inline void run_init(struct runs_tree *run) 916 { 917 run->runs = NULL; 918 run->count = 0; 919 run->allocated = 0; 920 } 921 922 static inline struct runs_tree *run_alloc(void) 923 { 924 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 925 } 926 927 static inline void run_close(struct runs_tree *run) 928 { 929 kvfree(run->runs); 930 memset(run, 0, sizeof(*run)); 931 } 932 933 static inline void run_free(struct runs_tree *run) 934 { 935 if (run) { 936 kvfree(run->runs); 937 kfree(run); 938 } 939 } 940 941 static inline bool run_is_empty(struct runs_tree *run) 942 { 943 return !run->count; 944 } 945 946 /* NTFS uses quad aligned bitmaps. */ 947 static inline size_t bitmap_size(size_t bits) 948 { 949 return ALIGN((bits + 7) >> 3, 8); 950 } 951 952 #define _100ns2seconds 10000000 953 #define SecondsToStartOf1970 0x00000002B6109100 954 955 #define NTFS_TIME_GRAN 100 956 957 /* 958 * kernel2nt - Converts in-memory kernel timestamp into nt time. 959 */ 960 static inline __le64 kernel2nt(const struct timespec64 *ts) 961 { 962 // 10^7 units of 100 nanoseconds one second 963 return cpu_to_le64(_100ns2seconds * 964 (ts->tv_sec + SecondsToStartOf1970) + 965 ts->tv_nsec / NTFS_TIME_GRAN); 966 } 967 968 /* 969 * nt2kernel - Converts on-disk nt time into kernel timestamp. 970 */ 971 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 972 { 973 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 974 975 // WARNING: do_div changes its first argument(!) 976 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 977 ts->tv_sec = t; 978 } 979 980 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 981 { 982 return sb->s_fs_info; 983 } 984 985 /* 986 * ntfs_up_cluster - Align up on cluster boundary. 987 */ 988 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 989 { 990 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 991 } 992 993 /* 994 * ntfs_up_block - Align up on cluster boundary. 995 */ 996 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 997 { 998 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 999 } 1000 1001 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 1002 { 1003 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 1004 } 1005 1006 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 1007 { 1008 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 1009 } 1010 1011 static inline struct buffer_head *ntfs_bread(struct super_block *sb, 1012 sector_t block) 1013 { 1014 struct buffer_head *bh = sb_bread(sb, block); 1015 1016 if (bh) 1017 return bh; 1018 1019 ntfs_err(sb, "failed to read volume at offset 0x%llx", 1020 (u64)block << sb->s_blocksize_bits); 1021 return NULL; 1022 } 1023 1024 static inline struct ntfs_inode *ntfs_i(struct inode *inode) 1025 { 1026 return container_of(inode, struct ntfs_inode, vfs_inode); 1027 } 1028 1029 static inline bool is_compressed(const struct ntfs_inode *ni) 1030 { 1031 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1032 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1033 } 1034 1035 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1036 { 1037 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1038 } 1039 1040 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1041 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1042 { 1043 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1044 } 1045 1046 static inline bool is_dedup(const struct ntfs_inode *ni) 1047 { 1048 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1049 } 1050 1051 static inline bool is_encrypted(const struct ntfs_inode *ni) 1052 { 1053 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1054 } 1055 1056 static inline bool is_sparsed(const struct ntfs_inode *ni) 1057 { 1058 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1059 } 1060 1061 static inline int is_resident(struct ntfs_inode *ni) 1062 { 1063 return ni->ni_flags & NI_FLAG_RESIDENT; 1064 } 1065 1066 static inline void le16_sub_cpu(__le16 *var, u16 val) 1067 { 1068 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1069 } 1070 1071 static inline void le32_sub_cpu(__le32 *var, u32 val) 1072 { 1073 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1074 } 1075 1076 static inline void nb_put(struct ntfs_buffers *nb) 1077 { 1078 u32 i, nbufs = nb->nbufs; 1079 1080 if (!nbufs) 1081 return; 1082 1083 for (i = 0; i < nbufs; i++) 1084 put_bh(nb->bh[i]); 1085 nb->nbufs = 0; 1086 } 1087 1088 static inline void put_indx_node(struct indx_node *in) 1089 { 1090 if (!in) 1091 return; 1092 1093 kfree(in->index); 1094 nb_put(&in->nb); 1095 kfree(in); 1096 } 1097 1098 static inline void mi_clear(struct mft_inode *mi) 1099 { 1100 nb_put(&mi->nb); 1101 kfree(mi->mrec); 1102 mi->mrec = NULL; 1103 } 1104 1105 static inline void ni_lock(struct ntfs_inode *ni) 1106 { 1107 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1108 } 1109 1110 static inline void ni_lock_dir(struct ntfs_inode *ni) 1111 { 1112 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1113 } 1114 1115 static inline void ni_unlock(struct ntfs_inode *ni) 1116 { 1117 mutex_unlock(&ni->ni_lock); 1118 } 1119 1120 static inline int ni_trylock(struct ntfs_inode *ni) 1121 { 1122 return mutex_trylock(&ni->ni_lock); 1123 } 1124 1125 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1126 struct ATTRIB *attr, 1127 struct runs_tree *run, CLST vcn) 1128 { 1129 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1130 attr->name_len, run, vcn); 1131 } 1132 1133 static inline void le64_sub_cpu(__le64 *var, u64 val) 1134 { 1135 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1136 } 1137 1138 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1139