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/fs.h> 15 #include <linux/highmem.h> 16 #include <linux/kernel.h> 17 #include <linux/mm.h> 18 #include <linux/mutex.h> 19 #include <linux/page-flags.h> 20 #include <linux/pagemap.h> 21 #include <linux/rbtree.h> 22 #include <linux/rwsem.h> 23 #include <linux/slab.h> 24 #include <linux/string.h> 25 #include <linux/time64.h> 26 #include <linux/types.h> 27 #include <linux/uidgid.h> 28 #include <asm/div64.h> 29 #include <asm/page.h> 30 31 #include "debug.h" 32 #include "ntfs.h" 33 34 struct dentry; 35 struct fiemap_extent_info; 36 struct user_namespace; 37 struct page; 38 struct writeback_control; 39 enum utf16_endian; 40 41 42 #define MINUS_ONE_T ((size_t)(-1)) 43 /* Biggest MFT / smallest cluster */ 44 #define MAXIMUM_BYTES_PER_MFT 4096 45 #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) 46 47 #define MAXIMUM_BYTES_PER_INDEX 4096 48 #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) 49 50 /* NTFS specific error code when fixup failed. */ 51 #define E_NTFS_FIXUP 555 52 /* NTFS specific error code about resident->nonresident. */ 53 #define E_NTFS_NONRESIDENT 556 54 /* NTFS specific error code about punch hole. */ 55 #define E_NTFS_NOTALIGNED 557 56 57 58 /* sbi->flags */ 59 #define NTFS_FLAGS_NODISCARD 0x00000001 60 /* Set when LogFile is replaying. */ 61 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 62 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 63 #define NTFS_FLAGS_MFTMIRR 0x00001000 64 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 65 66 67 /* ni->ni_flags */ 68 /* 69 * Data attribute is external compressed (LZX/Xpress) 70 * 1 - WOF_COMPRESSION_XPRESS4K 71 * 2 - WOF_COMPRESSION_XPRESS8K 72 * 3 - WOF_COMPRESSION_XPRESS16K 73 * 4 - WOF_COMPRESSION_LZX32K 74 */ 75 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 76 /* Data attribute is deduplicated. */ 77 #define NI_FLAG_DEDUPLICATED 0x00000010 78 #define NI_FLAG_EA 0x00000020 79 #define NI_FLAG_DIR 0x00000040 80 #define NI_FLAG_RESIDENT 0x00000080 81 #define NI_FLAG_UPDATE_PARENT 0x00000100 82 // clang-format on 83 84 struct ntfs_mount_options { 85 char *nls_name; 86 struct nls_table *nls; 87 88 kuid_t fs_uid; 89 kgid_t fs_gid; 90 u16 fs_fmask_inv; 91 u16 fs_dmask_inv; 92 93 unsigned fmask : 1; /* fmask was set. */ 94 unsigned dmask : 1; /*dmask was set. */ 95 unsigned sys_immutable : 1; /* Immutable system files. */ 96 unsigned discard : 1; /* Issue discard requests on deletions. */ 97 unsigned sparse : 1; /* Create sparse files. */ 98 unsigned showmeta : 1; /* Show meta files. */ 99 unsigned nohidden : 1; /* Do not show hidden files. */ 100 unsigned force : 1; /* RW mount dirty volume. */ 101 unsigned noacsrules : 1; /* Exclude acs rules. */ 102 unsigned prealloc : 1; /* Preallocate space when file is growing. */ 103 }; 104 105 /* Special value to unpack and deallocate. */ 106 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 107 108 /* TODO: Use rb tree instead of array. */ 109 struct runs_tree { 110 struct ntfs_run *runs; 111 size_t count; /* Currently used size a ntfs_run storage. */ 112 size_t allocated; /* Currently allocated ntfs_run storage size. */ 113 }; 114 115 struct ntfs_buffers { 116 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 117 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 118 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 119 u32 bytes; 120 u32 nbufs; 121 u32 off; 122 }; 123 124 enum ALLOCATE_OPT { 125 ALLOCATE_DEF = 0, // Allocate all clusters. 126 ALLOCATE_MFT = 1, // Allocate for MFT. 127 }; 128 129 enum bitmap_mutex_classes { 130 BITMAP_MUTEX_CLUSTERS = 0, 131 BITMAP_MUTEX_MFT = 1, 132 }; 133 134 struct wnd_bitmap { 135 struct super_block *sb; 136 struct rw_semaphore rw_lock; 137 138 struct runs_tree run; 139 size_t nbits; 140 141 size_t total_zeroes; // Total number of free bits. 142 u16 *free_bits; // Free bits in each window. 143 size_t nwnd; 144 u32 bits_last; // Bits in last window. 145 146 struct rb_root start_tree; // Extents, sorted by 'start'. 147 struct rb_root count_tree; // Extents, sorted by 'count + start'. 148 size_t count; // Extents count. 149 150 /* 151 * -1 Tree is activated but not updated (too many fragments). 152 * 0 - Tree is not activated. 153 * 1 - Tree is activated and updated. 154 */ 155 int uptodated; 156 size_t extent_min; // Minimal extent used while building. 157 size_t extent_max; // Upper estimate of biggest free block. 158 159 /* Zone [bit, end) */ 160 size_t zone_bit; 161 size_t zone_end; 162 163 bool set_tail; // Not necessary in driver. 164 bool inited; 165 }; 166 167 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, 168 size_t len2, const void *param); 169 170 enum index_mutex_classed { 171 INDEX_MUTEX_I30 = 0, 172 INDEX_MUTEX_SII = 1, 173 INDEX_MUTEX_SDH = 2, 174 INDEX_MUTEX_SO = 3, 175 INDEX_MUTEX_SQ = 4, 176 INDEX_MUTEX_SR = 5, 177 INDEX_MUTEX_TOTAL 178 }; 179 180 /* ntfs_index - Allocation unit inside directory. */ 181 struct ntfs_index { 182 struct runs_tree bitmap_run; 183 struct runs_tree alloc_run; 184 /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ 185 struct rw_semaphore run_lock; 186 187 /*TODO: Remove 'cmp'. */ 188 NTFS_CMP_FUNC cmp; 189 190 u8 index_bits; // log2(root->index_block_size) 191 u8 idx2vbn_bits; // log2(root->index_block_clst) 192 u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits 193 u8 type; // index_mutex_classed 194 }; 195 196 /* Minimum MFT zone. */ 197 #define NTFS_MIN_MFT_ZONE 100 198 199 /* Ntfs file system in-core superblock data. */ 200 struct ntfs_sb_info { 201 struct super_block *sb; 202 203 u32 discard_granularity; 204 u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) 205 206 u32 cluster_size; // bytes per cluster 207 u32 cluster_mask; // == cluster_size - 1 208 u64 cluster_mask_inv; // ~(cluster_size - 1) 209 u32 block_mask; // sb->s_blocksize - 1 210 u32 blocks_per_cluster; // cluster_size / sb->s_blocksize 211 212 u32 record_size; 213 u32 index_size; 214 215 u8 cluster_bits; 216 u8 record_bits; 217 218 u64 maxbytes; // Maximum size for normal files. 219 u64 maxbytes_sparse; // Maximum size for sparse file. 220 221 u32 flags; // See NTFS_FLAGS_XXX. 222 223 CLST zone_max; // Maximum MFT zone length in clusters 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_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, 413 CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, 414 enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, 415 CLST *new_lcn); 416 int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, 417 struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, 418 u64 new_size, struct runs_tree *run, 419 struct ATTRIB **ins_attr, struct page *page); 420 int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, 421 const __le16 *name, u8 name_len, struct runs_tree *run, 422 u64 new_size, const u64 *new_valid, bool keep_prealloc, 423 struct ATTRIB **ret); 424 int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, 425 CLST *len, bool *new); 426 int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); 427 int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); 428 int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, 429 const __le16 *name, u8 name_len, struct runs_tree *run, 430 CLST vcn); 431 int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, 432 const __le16 *name, u8 name_len, struct runs_tree *run, 433 u64 from, u64 to); 434 int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, 435 struct runs_tree *run, u64 frame, u64 frames, 436 u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); 437 int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, 438 CLST frame, CLST *clst_data); 439 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, 440 u64 new_valid); 441 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 442 int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 443 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); 444 445 /* Functions from attrlist.c */ 446 void al_destroy(struct ntfs_inode *ni); 447 bool al_verify(struct ntfs_inode *ni); 448 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); 449 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, 450 struct ATTR_LIST_ENTRY *le); 451 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, 452 struct ATTR_LIST_ENTRY *le, 453 const struct ATTRIB *attr); 454 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, 455 struct ATTR_LIST_ENTRY *le, 456 enum ATTR_TYPE type, const __le16 *name, 457 u8 name_len, const CLST *vcn); 458 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, 459 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, 460 struct ATTR_LIST_ENTRY **new_le); 461 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); 462 bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, 463 const __le16 *name, size_t name_len, 464 const struct MFT_REF *ref); 465 int al_update(struct ntfs_inode *ni, int sync); 466 static inline size_t al_aligned(size_t size) 467 { 468 return (size + 1023) & ~(size_t)1023; 469 } 470 471 /* Globals from bitfunc.c */ 472 bool are_bits_clear(const ulong *map, size_t bit, size_t nbits); 473 bool are_bits_set(const ulong *map, size_t bit, size_t nbits); 474 size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits); 475 476 /* Globals from dir.c */ 477 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, 478 u8 *buf, int buf_len); 479 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 480 struct cpu_str *uni, u32 max_ulen, 481 enum utf16_endian endian); 482 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 483 struct ntfs_fnd *fnd); 484 bool dir_is_empty(struct inode *dir); 485 extern const struct file_operations ntfs_dir_operations; 486 487 /* Globals from file.c */ 488 int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path, 489 struct kstat *stat, u32 request_mask, u32 flags); 490 void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, 491 CLST len); 492 int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 493 struct iattr *attr); 494 int ntfs_file_open(struct inode *inode, struct file *file); 495 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 496 __u64 start, __u64 len); 497 extern const struct inode_operations ntfs_special_inode_operations; 498 extern const struct inode_operations ntfs_file_inode_operations; 499 extern const struct file_operations ntfs_file_operations; 500 501 /* Globals from frecord.c */ 502 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 503 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 504 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 505 void ni_clear(struct ntfs_inode *ni); 506 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 507 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 508 struct mft_inode **mi); 509 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 510 struct ATTR_LIST_ENTRY **entry_o, 511 enum ATTR_TYPE type, const __le16 *name, 512 u8 name_len, const CLST *vcn, 513 struct mft_inode **mi); 514 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 515 struct ATTR_LIST_ENTRY **le, 516 struct mft_inode **mi); 517 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 518 const __le16 *name, u8 name_len, CLST vcn, 519 struct mft_inode **pmi); 520 int ni_load_all_mi(struct ntfs_inode *ni); 521 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 522 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 523 const __le16 *name, size_t name_len, bool base_only, 524 const __le16 *id); 525 int ni_create_attr_list(struct ntfs_inode *ni); 526 int ni_expand_list(struct ntfs_inode *ni); 527 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 528 const __le16 *name, u8 name_len, 529 const struct runs_tree *run, CLST svcn, CLST len, 530 __le16 flags, struct ATTRIB **new_attr, 531 struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); 532 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 533 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 534 struct ATTRIB **new_attr, struct mft_inode **mi, 535 struct ATTR_LIST_ENTRY **le); 536 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 537 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 538 int ni_delete_all(struct ntfs_inode *ni); 539 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 540 const struct cpu_str *uni, 541 const struct MFT_REF *home, 542 struct mft_inode **mi, 543 struct ATTR_LIST_ENTRY **entry); 544 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 545 struct mft_inode **mi, 546 struct ATTR_LIST_ENTRY **entry); 547 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 548 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 549 struct REPARSE_DATA_BUFFER *buffer); 550 int ni_write_inode(struct inode *inode, int sync, const char *hint); 551 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 552 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 553 __u64 vbo, __u64 len); 554 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); 555 int ni_decompress_file(struct ntfs_inode *ni); 556 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 557 u32 pages_per_frame); 558 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 559 u32 pages_per_frame); 560 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 561 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 562 563 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 564 struct NTFS_DE *de, struct NTFS_DE *de2, 565 int undo_step); 566 567 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 568 struct NTFS_DE *de); 569 570 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 571 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 572 bool *is_bad); 573 574 bool ni_is_dirty(struct inode *inode); 575 576 /* Globals from fslog.c */ 577 int log_replay(struct ntfs_inode *ni, bool *initialized); 578 579 /* Globals from fsntfs.c */ 580 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 581 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 582 bool simple); 583 int ntfs_extend_init(struct ntfs_sb_info *sbi); 584 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 585 const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi, 586 enum ATTR_TYPE Type); 587 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 588 CLST *new_lcn, CLST *new_len, 589 enum ALLOCATE_OPT opt); 590 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 591 struct ntfs_inode *ni, struct mft_inode **mi); 592 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); 593 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 594 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 595 void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 596 void ntfs_bad_inode(struct inode *inode, const char *hint); 597 #define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) 598 enum NTFS_DIRTY_FLAGS { 599 NTFS_DIRTY_CLEAR = 0, 600 NTFS_DIRTY_DIRTY = 1, 601 NTFS_DIRTY_ERROR = 2, 602 }; 603 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 604 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); 605 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 606 const void *buffer, int wait); 607 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 608 u64 vbo, const void *buf, size_t bytes, int sync); 609 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 610 const struct runs_tree *run, u64 vbo); 611 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 612 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 613 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 614 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 615 struct ntfs_buffers *nb); 616 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 617 u32 bytes, struct ntfs_buffers *nb); 618 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 619 struct ntfs_buffers *nb, int sync); 620 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, 621 struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, 622 enum req_op op); 623 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 624 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 625 u64 vbo, u64 *lbo, u64 *bytes); 626 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 627 bool dir); 628 extern const u8 s_default_security[0x50]; 629 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 630 int ntfs_security_init(struct ntfs_sb_info *sbi); 631 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 632 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 633 size_t *size); 634 int ntfs_insert_security(struct ntfs_sb_info *sbi, 635 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 636 u32 size, __le32 *security_id, bool *inserted); 637 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 638 int ntfs_objid_init(struct ntfs_sb_info *sbi); 639 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 640 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 641 const struct MFT_REF *ref); 642 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 643 const struct MFT_REF *ref); 644 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 645 int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim); 646 647 /* Globals from index.c */ 648 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 649 void fnd_clear(struct ntfs_fnd *fnd); 650 static inline struct ntfs_fnd *fnd_get(void) 651 { 652 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 653 } 654 static inline void fnd_put(struct ntfs_fnd *fnd) 655 { 656 if (fnd) { 657 fnd_clear(fnd); 658 kfree(fnd); 659 } 660 } 661 void indx_clear(struct ntfs_index *idx); 662 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 663 const struct ATTRIB *attr, enum index_mutex_classed type); 664 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 665 struct ATTRIB **attr, struct mft_inode **mi); 666 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 667 struct indx_node **node); 668 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 669 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 670 const void *param, int *diff, struct NTFS_DE **entry, 671 struct ntfs_fnd *fnd); 672 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 673 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 674 struct ntfs_fnd *fnd); 675 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 676 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 677 size_t *off, struct ntfs_fnd *fnd); 678 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 679 const struct NTFS_DE *new_de, const void *param, 680 struct ntfs_fnd *fnd, bool undo); 681 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 682 const void *key, u32 key_len, const void *param); 683 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 684 const struct ATTR_FILE_NAME *fname, 685 const struct NTFS_DUP_INFO *dup, int sync); 686 687 /* Globals from inode.c */ 688 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 689 const struct cpu_str *name); 690 int ntfs_set_size(struct inode *inode, u64 new_size); 691 int reset_log_file(struct inode *inode); 692 int ntfs_get_block(struct inode *inode, sector_t vbn, 693 struct buffer_head *bh_result, int create); 694 int ntfs_write_begin(struct file *file, struct address_space *mapping, 695 loff_t pos, u32 len, struct page **pagep, void **fsdata); 696 int ntfs_write_end(struct file *file, struct address_space *mapping, 697 loff_t pos, u32 len, u32 copied, struct page *page, 698 void *fsdata); 699 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 700 int ntfs_sync_inode(struct inode *inode); 701 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, 702 struct inode *i2); 703 int inode_write_data(struct inode *inode, const void *data, size_t bytes); 704 struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, 705 struct inode *dir, struct dentry *dentry, 706 const struct cpu_str *uni, umode_t mode, 707 dev_t dev, const char *symname, u32 size, 708 struct ntfs_fnd *fnd); 709 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 710 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 711 void ntfs_evict_inode(struct inode *inode); 712 extern const struct inode_operations ntfs_link_inode_operations; 713 extern const struct address_space_operations ntfs_aops; 714 extern const struct address_space_operations ntfs_aops_cmpr; 715 716 /* Globals from name_i.c */ 717 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 718 const struct cpu_str *uni); 719 struct dentry *ntfs3_get_parent(struct dentry *child); 720 721 extern const struct inode_operations ntfs_dir_inode_operations; 722 extern const struct inode_operations ntfs_special_inode_operations; 723 724 /* Globals from record.c */ 725 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 726 void mi_put(struct mft_inode *mi); 727 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 728 int mi_read(struct mft_inode *mi, bool is_mft); 729 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); 730 // TODO: id? 731 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, 732 enum ATTR_TYPE type, const __le16 *name, 733 size_t name_len, const __le16 *id); 734 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, 735 struct ATTR_LIST_ENTRY *le) 736 { 737 return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, 738 &le->id); 739 } 740 int mi_write(struct mft_inode *mi, int wait); 741 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 742 __le16 flags, bool is_mft); 743 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, 744 const __le16 *name, u8 name_len, u32 asize, 745 u16 name_off); 746 747 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 748 struct ATTRIB *attr); 749 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 750 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 751 struct runs_tree *run, CLST len); 752 static inline bool mi_is_ref(const struct mft_inode *mi, 753 const struct MFT_REF *ref) 754 { 755 if (le32_to_cpu(ref->low) != mi->rno) 756 return false; 757 if (ref->seq != mi->mrec->seq) 758 return false; 759 760 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 761 return le16_to_cpu(ref->high) == (mi->rno >> 32); 762 #else 763 return !ref->high; 764 #endif 765 } 766 767 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 768 { 769 ref->low = cpu_to_le32(mi->rno); 770 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 771 ref->high = cpu_to_le16(mi->rno >> 32); 772 #else 773 ref->high = 0; 774 #endif 775 ref->seq = mi->mrec->seq; 776 } 777 778 /* Globals from run.c */ 779 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 780 CLST *len, size_t *index); 781 void run_truncate(struct runs_tree *run, CLST vcn); 782 void run_truncate_head(struct runs_tree *run, CLST vcn); 783 void run_truncate_around(struct runs_tree *run, CLST vcn); 784 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 785 bool is_mft); 786 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); 787 bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); 788 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 789 CLST *lcn, CLST *len); 790 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 791 792 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 793 u32 run_buf_size, CLST *packed_vcns); 794 int run_unpack(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); 797 798 #ifdef NTFS3_CHECK_FREE_CLST 799 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 800 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 801 u32 run_buf_size); 802 #else 803 #define run_unpack_ex run_unpack 804 #endif 805 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 806 int run_clone(const struct runs_tree *run, struct runs_tree *new_run); 807 808 /* Globals from super.c */ 809 void *ntfs_set_shared(void *ptr, u32 bytes); 810 void *ntfs_put_shared(void *ptr); 811 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 812 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 813 814 /* Globals from bitmap.c*/ 815 int __init ntfs3_init_bitmap(void); 816 void ntfs3_exit_bitmap(void); 817 void wnd_close(struct wnd_bitmap *wnd); 818 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 819 { 820 return wnd->total_zeroes; 821 } 822 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 823 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 824 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 825 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 826 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 827 828 /* Possible values for 'flags' 'wnd_find'. */ 829 #define BITMAP_FIND_MARK_AS_USED 0x01 830 #define BITMAP_FIND_FULL 0x02 831 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 832 size_t flags, size_t *allocated); 833 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 834 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 835 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 836 837 /* Globals from upcase.c */ 838 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 839 const u16 *upcase, bool bothcase); 840 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 841 const u16 *upcase, bool bothcase); 842 843 /* globals from xattr.c */ 844 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 845 struct posix_acl *ntfs_get_acl(struct inode *inode, int type, bool rcu); 846 int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, 847 struct posix_acl *acl, int type); 848 int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, 849 struct inode *dir); 850 #else 851 #define ntfs_get_acl NULL 852 #define ntfs_set_acl NULL 853 #endif 854 855 int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode); 856 int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode, 857 int mask); 858 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 859 extern const struct xattr_handler *ntfs_xattr_handlers[]; 860 861 int ntfs_save_wsl_perm(struct inode *inode); 862 void ntfs_get_wsl_perm(struct inode *inode); 863 864 /* globals from lznt.c */ 865 struct lznt *get_lznt_ctx(int level); 866 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 867 void *compressed, size_t compressed_size, 868 struct lznt *ctx); 869 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 870 void *uncompressed, size_t uncompressed_size); 871 872 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 873 { 874 return sbi->volume.major_ver >= 3; 875 } 876 877 /* (sb->s_flags & SB_ACTIVE) */ 878 static inline bool is_mounted(struct ntfs_sb_info *sbi) 879 { 880 return !!sbi->sb->s_root; 881 } 882 883 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 884 { 885 return rno < MFT_REC_FREE || rno == sbi->objid_no || 886 rno == sbi->quota_no || rno == sbi->reparse_no || 887 rno == sbi->usn_jrnl_no; 888 } 889 890 static inline void ntfs_unmap_page(struct page *page) 891 { 892 kunmap(page); 893 put_page(page); 894 } 895 896 static inline struct page *ntfs_map_page(struct address_space *mapping, 897 unsigned long index) 898 { 899 struct page *page = read_mapping_page(mapping, index, NULL); 900 901 if (!IS_ERR(page)) 902 kmap(page); 903 return page; 904 } 905 906 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 907 { 908 return wnd->zone_bit; 909 } 910 911 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 912 { 913 return wnd->zone_end - wnd->zone_bit; 914 } 915 916 static inline void run_init(struct runs_tree *run) 917 { 918 run->runs = NULL; 919 run->count = 0; 920 run->allocated = 0; 921 } 922 923 static inline struct runs_tree *run_alloc(void) 924 { 925 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 926 } 927 928 static inline void run_close(struct runs_tree *run) 929 { 930 kvfree(run->runs); 931 memset(run, 0, sizeof(*run)); 932 } 933 934 static inline void run_free(struct runs_tree *run) 935 { 936 if (run) { 937 kvfree(run->runs); 938 kfree(run); 939 } 940 } 941 942 static inline bool run_is_empty(struct runs_tree *run) 943 { 944 return !run->count; 945 } 946 947 /* NTFS uses quad aligned bitmaps. */ 948 static inline size_t bitmap_size(size_t bits) 949 { 950 return ALIGN((bits + 7) >> 3, 8); 951 } 952 953 #define _100ns2seconds 10000000 954 #define SecondsToStartOf1970 0x00000002B6109100 955 956 #define NTFS_TIME_GRAN 100 957 958 /* 959 * kernel2nt - Converts in-memory kernel timestamp into nt time. 960 */ 961 static inline __le64 kernel2nt(const struct timespec64 *ts) 962 { 963 // 10^7 units of 100 nanoseconds one second 964 return cpu_to_le64(_100ns2seconds * 965 (ts->tv_sec + SecondsToStartOf1970) + 966 ts->tv_nsec / NTFS_TIME_GRAN); 967 } 968 969 /* 970 * nt2kernel - Converts on-disk nt time into kernel timestamp. 971 */ 972 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 973 { 974 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 975 976 // WARNING: do_div changes its first argument(!) 977 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 978 ts->tv_sec = t; 979 } 980 981 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 982 { 983 return sb->s_fs_info; 984 } 985 986 /* 987 * ntfs_up_cluster - Align up on cluster boundary. 988 */ 989 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 990 { 991 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 992 } 993 994 /* 995 * ntfs_up_block - Align up on cluster boundary. 996 */ 997 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 998 { 999 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 1000 } 1001 1002 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 1003 { 1004 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 1005 } 1006 1007 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 1008 { 1009 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 1010 } 1011 1012 static inline struct buffer_head *ntfs_bread(struct super_block *sb, 1013 sector_t block) 1014 { 1015 struct buffer_head *bh = sb_bread(sb, block); 1016 1017 if (bh) 1018 return bh; 1019 1020 ntfs_err(sb, "failed to read volume at offset 0x%llx", 1021 (u64)block << sb->s_blocksize_bits); 1022 return NULL; 1023 } 1024 1025 static inline struct ntfs_inode *ntfs_i(struct inode *inode) 1026 { 1027 return container_of(inode, struct ntfs_inode, vfs_inode); 1028 } 1029 1030 static inline bool is_compressed(const struct ntfs_inode *ni) 1031 { 1032 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1033 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1034 } 1035 1036 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1037 { 1038 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1039 } 1040 1041 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1042 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1043 { 1044 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1045 } 1046 1047 static inline bool is_dedup(const struct ntfs_inode *ni) 1048 { 1049 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1050 } 1051 1052 static inline bool is_encrypted(const struct ntfs_inode *ni) 1053 { 1054 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1055 } 1056 1057 static inline bool is_sparsed(const struct ntfs_inode *ni) 1058 { 1059 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1060 } 1061 1062 static inline int is_resident(struct ntfs_inode *ni) 1063 { 1064 return ni->ni_flags & NI_FLAG_RESIDENT; 1065 } 1066 1067 static inline void le16_sub_cpu(__le16 *var, u16 val) 1068 { 1069 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1070 } 1071 1072 static inline void le32_sub_cpu(__le32 *var, u32 val) 1073 { 1074 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1075 } 1076 1077 static inline void nb_put(struct ntfs_buffers *nb) 1078 { 1079 u32 i, nbufs = nb->nbufs; 1080 1081 if (!nbufs) 1082 return; 1083 1084 for (i = 0; i < nbufs; i++) 1085 put_bh(nb->bh[i]); 1086 nb->nbufs = 0; 1087 } 1088 1089 static inline void put_indx_node(struct indx_node *in) 1090 { 1091 if (!in) 1092 return; 1093 1094 kfree(in->index); 1095 nb_put(&in->nb); 1096 kfree(in); 1097 } 1098 1099 static inline void mi_clear(struct mft_inode *mi) 1100 { 1101 nb_put(&mi->nb); 1102 kfree(mi->mrec); 1103 mi->mrec = NULL; 1104 } 1105 1106 static inline void ni_lock(struct ntfs_inode *ni) 1107 { 1108 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1109 } 1110 1111 static inline void ni_lock_dir(struct ntfs_inode *ni) 1112 { 1113 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1114 } 1115 1116 static inline void ni_unlock(struct ntfs_inode *ni) 1117 { 1118 mutex_unlock(&ni->ni_lock); 1119 } 1120 1121 static inline int ni_trylock(struct ntfs_inode *ni) 1122 { 1123 return mutex_trylock(&ni->ni_lock); 1124 } 1125 1126 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1127 struct ATTRIB *attr, 1128 struct runs_tree *run, CLST vcn) 1129 { 1130 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1131 attr->name_len, run, vcn); 1132 } 1133 1134 static inline void le64_sub_cpu(__le64 *var, u64 val) 1135 { 1136 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1137 } 1138 1139 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1140