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 /* NTFS specific error code when on-disk struct is corrupted. */ 57 #define E_NTFS_CORRUPT 558 58 59 60 /* sbi->flags */ 61 #define NTFS_FLAGS_NODISCARD 0x00000001 62 /* Set when LogFile is replaying. */ 63 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 64 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 65 #define NTFS_FLAGS_MFTMIRR 0x00001000 66 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 67 68 69 /* ni->ni_flags */ 70 /* 71 * Data attribute is external compressed (LZX/Xpress) 72 * 1 - WOF_COMPRESSION_XPRESS4K 73 * 2 - WOF_COMPRESSION_XPRESS8K 74 * 3 - WOF_COMPRESSION_XPRESS16K 75 * 4 - WOF_COMPRESSION_LZX32K 76 */ 77 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 78 /* Data attribute is deduplicated. */ 79 #define NI_FLAG_DEDUPLICATED 0x00000010 80 #define NI_FLAG_EA 0x00000020 81 #define NI_FLAG_DIR 0x00000040 82 #define NI_FLAG_RESIDENT 0x00000080 83 #define NI_FLAG_UPDATE_PARENT 0x00000100 84 // clang-format on 85 86 struct ntfs_mount_options { 87 char *nls_name; 88 struct nls_table *nls; 89 90 kuid_t fs_uid; 91 kgid_t fs_gid; 92 u16 fs_fmask_inv; 93 u16 fs_dmask_inv; 94 95 unsigned fmask : 1; /* fmask was set. */ 96 unsigned dmask : 1; /*dmask was set. */ 97 unsigned sys_immutable : 1; /* Immutable system files. */ 98 unsigned discard : 1; /* Issue discard requests on deletions. */ 99 unsigned sparse : 1; /* Create sparse files. */ 100 unsigned showmeta : 1; /* Show meta files. */ 101 unsigned nohidden : 1; /* Do not show hidden files. */ 102 unsigned hide_dot_files : 1; /* Set hidden flag on dot files. */ 103 unsigned windows_names : 1; /* Disallow names forbidden by Windows. */ 104 unsigned force : 1; /* RW mount dirty volume. */ 105 unsigned prealloc : 1; /* Preallocate space when file is growing. */ 106 unsigned nocase : 1; /* case insensitive. */ 107 }; 108 109 /* Special value to unpack and deallocate. */ 110 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 111 112 /* TODO: Use rb tree instead of array. */ 113 struct runs_tree { 114 struct ntfs_run *runs; 115 size_t count; /* Currently used size a ntfs_run storage. */ 116 size_t allocated; /* Currently allocated ntfs_run storage size. */ 117 }; 118 119 struct ntfs_buffers { 120 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 121 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 122 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 123 u32 bytes; 124 u32 nbufs; 125 u32 off; 126 }; 127 128 enum ALLOCATE_OPT { 129 ALLOCATE_DEF = 0, // Allocate all clusters. 130 ALLOCATE_MFT = 1, // Allocate for MFT. 131 ALLOCATE_ZERO = 2, // Zeroout new allocated clusters 132 }; 133 134 enum bitmap_mutex_classes { 135 BITMAP_MUTEX_CLUSTERS = 0, 136 BITMAP_MUTEX_MFT = 1, 137 }; 138 139 struct wnd_bitmap { 140 struct super_block *sb; 141 struct rw_semaphore rw_lock; 142 143 struct runs_tree run; 144 size_t nbits; 145 146 size_t total_zeroes; // Total number of free bits. 147 u16 *free_bits; // Free bits in each window. 148 size_t nwnd; 149 u32 bits_last; // Bits in last window. 150 151 struct rb_root start_tree; // Extents, sorted by 'start'. 152 struct rb_root count_tree; // Extents, sorted by 'count + start'. 153 size_t count; // Extents count. 154 155 /* 156 * -1 Tree is activated but not updated (too many fragments). 157 * 0 - Tree is not activated. 158 * 1 - Tree is activated and updated. 159 */ 160 int uptodated; 161 size_t extent_min; // Minimal extent used while building. 162 size_t extent_max; // Upper estimate of biggest free block. 163 164 /* Zone [bit, end) */ 165 size_t zone_bit; 166 size_t zone_end; 167 168 bool inited; 169 }; 170 171 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, 172 size_t len2, const void *param); 173 174 enum index_mutex_classed { 175 INDEX_MUTEX_I30 = 0, 176 INDEX_MUTEX_SII = 1, 177 INDEX_MUTEX_SDH = 2, 178 INDEX_MUTEX_SO = 3, 179 INDEX_MUTEX_SQ = 4, 180 INDEX_MUTEX_SR = 5, 181 INDEX_MUTEX_TOTAL 182 }; 183 184 /* ntfs_index - Allocation unit inside directory. */ 185 struct ntfs_index { 186 struct runs_tree bitmap_run; 187 struct runs_tree alloc_run; 188 /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ 189 struct rw_semaphore run_lock; 190 191 /*TODO: Remove 'cmp'. */ 192 NTFS_CMP_FUNC cmp; 193 194 u8 index_bits; // log2(root->index_block_size) 195 u8 idx2vbn_bits; // log2(root->index_block_clst) 196 u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits 197 u8 type; // index_mutex_classed 198 }; 199 200 /* Minimum MFT zone. */ 201 #define NTFS_MIN_MFT_ZONE 100 202 /* Step to increase the MFT. */ 203 #define NTFS_MFT_INCREASE_STEP 1024 204 205 /* Ntfs file system in-core superblock data. */ 206 struct ntfs_sb_info { 207 struct super_block *sb; 208 209 u32 discard_granularity; 210 u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) 211 212 u32 cluster_size; // bytes per cluster 213 u32 cluster_mask; // == cluster_size - 1 214 u64 cluster_mask_inv; // ~(cluster_size - 1) 215 u32 block_mask; // sb->s_blocksize - 1 216 u32 blocks_per_cluster; // cluster_size / sb->s_blocksize 217 218 u32 record_size; 219 u32 index_size; 220 221 u8 cluster_bits; 222 u8 record_bits; 223 224 u64 maxbytes; // Maximum size for normal files. 225 u64 maxbytes_sparse; // Maximum size for sparse file. 226 227 u32 flags; // See NTFS_FLAGS_XXX. 228 229 CLST zone_max; // Maximum MFT zone length in clusters 230 CLST bad_clusters; // The count of marked bad clusters. 231 232 u16 max_bytes_per_attr; // Maximum attribute size in record. 233 u16 attr_size_tr; // Attribute size threshold (320 bytes). 234 235 /* Records in $Extend. */ 236 CLST objid_no; 237 CLST quota_no; 238 CLST reparse_no; 239 CLST usn_jrnl_no; 240 241 struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. 242 u32 def_entries; 243 u32 ea_max_size; 244 245 struct MFT_REC *new_rec; 246 247 u16 *upcase; 248 249 struct { 250 u64 lbo, lbo2; 251 struct ntfs_inode *ni; 252 struct wnd_bitmap bitmap; // $MFT::Bitmap 253 /* 254 * MFT records [11-24) used to expand MFT itself. 255 * They always marked as used in $MFT::Bitmap 256 * 'reserved_bitmap' contains real bitmap of these records. 257 */ 258 ulong reserved_bitmap; // Bitmap of used records [11 - 24) 259 size_t next_free; // The next record to allocate from 260 size_t used; // MFT valid size in records. 261 u32 recs_mirr; // Number of records in MFTMirr 262 u8 next_reserved; 263 u8 reserved_bitmap_inited; 264 } mft; 265 266 struct { 267 struct wnd_bitmap bitmap; // $Bitmap::Data 268 CLST next_free_lcn; 269 } used; 270 271 struct { 272 u64 size; // In bytes. 273 u64 blocks; // In blocks. 274 u64 ser_num; 275 struct ntfs_inode *ni; 276 __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. 277 u8 major_ver; 278 u8 minor_ver; 279 char label[65]; 280 bool real_dirty; // Real fs state. 281 } volume; 282 283 struct { 284 struct ntfs_index index_sii; 285 struct ntfs_index index_sdh; 286 struct ntfs_inode *ni; 287 u32 next_id; 288 u64 next_off; 289 290 __le32 def_security_id; 291 } security; 292 293 struct { 294 struct ntfs_index index_r; 295 struct ntfs_inode *ni; 296 u64 max_size; // 16K 297 } reparse; 298 299 struct { 300 struct ntfs_index index_o; 301 struct ntfs_inode *ni; 302 } objid; 303 304 struct { 305 struct mutex mtx_lznt; 306 struct lznt *lznt; 307 #ifdef CONFIG_NTFS3_LZX_XPRESS 308 struct mutex mtx_xpress; 309 struct xpress_decompressor *xpress; 310 struct mutex mtx_lzx; 311 struct lzx_decompressor *lzx; 312 #endif 313 } compress; 314 315 struct ntfs_mount_options *options; 316 struct ratelimit_state msg_ratelimit; 317 }; 318 319 /* One MFT record(usually 1024 bytes), consists of attributes. */ 320 struct mft_inode { 321 struct rb_node node; 322 struct ntfs_sb_info *sbi; 323 324 struct MFT_REC *mrec; 325 struct ntfs_buffers nb; 326 327 CLST rno; 328 bool dirty; 329 }; 330 331 /* Nested class for ntfs_inode::ni_lock. */ 332 enum ntfs_inode_mutex_lock_class { 333 NTFS_INODE_MUTEX_DIRTY, 334 NTFS_INODE_MUTEX_SECURITY, 335 NTFS_INODE_MUTEX_OBJID, 336 NTFS_INODE_MUTEX_REPARSE, 337 NTFS_INODE_MUTEX_NORMAL, 338 NTFS_INODE_MUTEX_PARENT, 339 NTFS_INODE_MUTEX_PARENT2, 340 }; 341 342 /* 343 * struct ntfs_inode 344 * 345 * Ntfs inode - extends linux inode. consists of one or more MFT inodes. 346 */ 347 struct ntfs_inode { 348 struct mft_inode mi; // base record 349 350 /* 351 * Valid size: [0 - i_valid) - these range in file contains valid data. 352 * Range [i_valid - inode->i_size) - contains 0. 353 * Usually i_valid <= inode->i_size. 354 */ 355 u64 i_valid; 356 struct timespec64 i_crtime; 357 358 struct mutex ni_lock; 359 360 /* File attributes from std. */ 361 enum FILE_ATTRIBUTE std_fa; 362 __le32 std_security_id; 363 364 /* 365 * Tree of mft_inode. 366 * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes 367 * e.g. file becomes too fragmented or contains a lot of names. 368 */ 369 struct rb_root mi_tree; 370 371 /* 372 * This member is used in ntfs_readdir to ensure that all subrecords are loaded 373 */ 374 u8 mi_loaded; 375 376 union { 377 struct ntfs_index dir; 378 struct { 379 struct rw_semaphore run_lock; 380 struct runs_tree run; 381 #ifdef CONFIG_NTFS3_LZX_XPRESS 382 struct page *offs_page; 383 #endif 384 } file; 385 }; 386 387 struct { 388 struct runs_tree run; 389 struct ATTR_LIST_ENTRY *le; // 1K aligned memory. 390 size_t size; 391 bool dirty; 392 } attr_list; 393 394 size_t ni_flags; // NI_FLAG_XXX 395 396 struct inode vfs_inode; 397 }; 398 399 struct indx_node { 400 struct ntfs_buffers nb; 401 struct INDEX_BUFFER *index; 402 }; 403 404 struct ntfs_fnd { 405 int level; 406 struct indx_node *nodes[20]; 407 struct NTFS_DE *de[20]; 408 struct NTFS_DE *root_de; 409 }; 410 411 enum REPARSE_SIGN { 412 REPARSE_NONE = 0, 413 REPARSE_COMPRESSED = 1, 414 REPARSE_DEDUPLICATED = 2, 415 REPARSE_LINK = 3 416 }; 417 418 /* Functions from attrib.c */ 419 int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, 420 CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, 421 enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, 422 CLST *new_lcn, CLST *new_len); 423 int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, 424 struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, 425 u64 new_size, struct runs_tree *run, 426 struct ATTRIB **ins_attr, struct page *page); 427 int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, 428 const __le16 *name, u8 name_len, struct runs_tree *run, 429 u64 new_size, const u64 *new_valid, bool keep_prealloc, 430 struct ATTRIB **ret); 431 int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, 432 CLST *len, bool *new, bool zero); 433 int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); 434 int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); 435 int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, 436 const __le16 *name, u8 name_len, struct runs_tree *run, 437 CLST vcn); 438 int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, 439 const __le16 *name, u8 name_len, struct runs_tree *run, 440 u64 from, u64 to); 441 int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, 442 struct runs_tree *run, u64 frame, u64 frames, 443 u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); 444 int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, 445 CLST frame, CLST *clst_data); 446 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, 447 u64 new_valid); 448 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 449 int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 450 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); 451 452 /* Functions from attrlist.c */ 453 void al_destroy(struct ntfs_inode *ni); 454 bool al_verify(struct ntfs_inode *ni); 455 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); 456 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, 457 struct ATTR_LIST_ENTRY *le); 458 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, 459 struct ATTR_LIST_ENTRY *le, 460 const struct ATTRIB *attr); 461 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, 462 struct ATTR_LIST_ENTRY *le, 463 enum ATTR_TYPE type, const __le16 *name, 464 u8 name_len, const CLST *vcn); 465 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, 466 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, 467 struct ATTR_LIST_ENTRY **new_le); 468 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); 469 bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, 470 const __le16 *name, u8 name_len, const struct MFT_REF *ref); 471 int al_update(struct ntfs_inode *ni, int sync); 472 static inline size_t al_aligned(size_t size) 473 { 474 return (size + 1023) & ~(size_t)1023; 475 } 476 477 /* Globals from bitfunc.c */ 478 bool are_bits_clear(const void *map, size_t bit, size_t nbits); 479 bool are_bits_set(const void *map, size_t bit, size_t nbits); 480 size_t get_set_bits_ex(const void *map, size_t bit, size_t nbits); 481 482 /* Globals from dir.c */ 483 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, 484 u8 *buf, int buf_len); 485 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 486 struct cpu_str *uni, u32 max_ulen, 487 enum utf16_endian endian); 488 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 489 struct ntfs_fnd *fnd); 490 bool dir_is_empty(struct inode *dir); 491 extern const struct file_operations ntfs_dir_operations; 492 493 /* Globals from file.c */ 494 int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, 495 struct kstat *stat, u32 request_mask, u32 flags); 496 int ntfs3_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 497 struct iattr *attr); 498 void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, 499 CLST len); 500 int ntfs_file_open(struct inode *inode, struct file *file); 501 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 502 __u64 start, __u64 len); 503 extern const struct inode_operations ntfs_special_inode_operations; 504 extern const struct inode_operations ntfs_file_inode_operations; 505 extern const struct file_operations ntfs_file_operations; 506 507 /* Globals from frecord.c */ 508 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 509 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 510 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 511 void ni_clear(struct ntfs_inode *ni); 512 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 513 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 514 struct mft_inode **mi); 515 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 516 struct ATTR_LIST_ENTRY **entry_o, 517 enum ATTR_TYPE type, const __le16 *name, 518 u8 name_len, const CLST *vcn, 519 struct mft_inode **mi); 520 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 521 struct ATTR_LIST_ENTRY **le, 522 struct mft_inode **mi); 523 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 524 const __le16 *name, u8 name_len, CLST vcn, 525 struct mft_inode **pmi); 526 int ni_load_all_mi(struct ntfs_inode *ni); 527 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 528 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 529 const __le16 *name, u8 name_len, bool base_only, 530 const __le16 *id); 531 int ni_create_attr_list(struct ntfs_inode *ni); 532 int ni_expand_list(struct ntfs_inode *ni); 533 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 534 const __le16 *name, u8 name_len, 535 const struct runs_tree *run, CLST svcn, CLST len, 536 __le16 flags, struct ATTRIB **new_attr, 537 struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); 538 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 539 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 540 struct ATTRIB **new_attr, struct mft_inode **mi, 541 struct ATTR_LIST_ENTRY **le); 542 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 543 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 544 int ni_delete_all(struct ntfs_inode *ni); 545 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 546 const struct le_str *uni, 547 const struct MFT_REF *home, 548 struct mft_inode **mi, 549 struct ATTR_LIST_ENTRY **entry); 550 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 551 struct mft_inode **mi, 552 struct ATTR_LIST_ENTRY **entry); 553 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 554 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 555 struct REPARSE_DATA_BUFFER *buffer); 556 int ni_write_inode(struct inode *inode, int sync, const char *hint); 557 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 558 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 559 __u64 vbo, __u64 len); 560 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); 561 int ni_decompress_file(struct ntfs_inode *ni); 562 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 563 u32 pages_per_frame); 564 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 565 u32 pages_per_frame); 566 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 567 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 568 569 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 570 struct NTFS_DE *de, struct NTFS_DE *de2, 571 int undo_step); 572 573 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 574 struct NTFS_DE *de); 575 576 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 577 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 578 bool *is_bad); 579 580 bool ni_is_dirty(struct inode *inode); 581 582 /* Globals from fslog.c */ 583 bool check_index_header(const struct INDEX_HDR *hdr, size_t bytes); 584 int log_replay(struct ntfs_inode *ni, bool *initialized); 585 586 /* Globals from fsntfs.c */ 587 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 588 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 589 bool simple); 590 int ntfs_extend_init(struct ntfs_sb_info *sbi); 591 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 592 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 593 CLST *new_lcn, CLST *new_len, 594 enum ALLOCATE_OPT opt); 595 bool ntfs_check_for_free_space(struct ntfs_sb_info *sbi, CLST clen, CLST mlen); 596 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 597 struct ntfs_inode *ni, struct mft_inode **mi); 598 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); 599 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 600 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 601 void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 602 void ntfs_bad_inode(struct inode *inode, const char *hint); 603 #define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) 604 enum NTFS_DIRTY_FLAGS { 605 NTFS_DIRTY_CLEAR = 0, 606 NTFS_DIRTY_DIRTY = 1, 607 NTFS_DIRTY_ERROR = 2, 608 }; 609 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 610 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); 611 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 612 const void *buffer, int wait); 613 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 614 u64 vbo, const void *buf, size_t bytes, int sync); 615 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 616 const struct runs_tree *run, u64 vbo); 617 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 618 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 619 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 620 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 621 struct ntfs_buffers *nb); 622 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 623 u32 bytes, struct ntfs_buffers *nb); 624 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 625 struct ntfs_buffers *nb, int sync); 626 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, 627 struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, 628 enum req_op op); 629 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 630 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 631 u64 vbo, u64 *lbo, u64 *bytes); 632 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 633 enum RECORD_FLAG flag); 634 extern const u8 s_default_security[0x50]; 635 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 636 int ntfs_security_init(struct ntfs_sb_info *sbi); 637 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 638 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 639 size_t *size); 640 int ntfs_insert_security(struct ntfs_sb_info *sbi, 641 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 642 u32 size, __le32 *security_id, bool *inserted); 643 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 644 int ntfs_objid_init(struct ntfs_sb_info *sbi); 645 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 646 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 647 const struct MFT_REF *ref); 648 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 649 const struct MFT_REF *ref); 650 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 651 int run_deallocate(struct ntfs_sb_info *sbi, const struct runs_tree *run, 652 bool trim); 653 bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name); 654 655 /* Globals from index.c */ 656 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 657 void fnd_clear(struct ntfs_fnd *fnd); 658 static inline struct ntfs_fnd *fnd_get(void) 659 { 660 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 661 } 662 static inline void fnd_put(struct ntfs_fnd *fnd) 663 { 664 if (fnd) { 665 fnd_clear(fnd); 666 kfree(fnd); 667 } 668 } 669 void indx_clear(struct ntfs_index *idx); 670 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 671 const struct ATTRIB *attr, enum index_mutex_classed type); 672 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 673 struct ATTRIB **attr, struct mft_inode **mi); 674 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 675 struct indx_node **node); 676 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 677 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 678 const void *param, int *diff, struct NTFS_DE **entry, 679 struct ntfs_fnd *fnd); 680 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 681 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 682 struct ntfs_fnd *fnd); 683 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 684 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 685 size_t *off, struct ntfs_fnd *fnd); 686 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 687 const struct NTFS_DE *new_de, const void *param, 688 struct ntfs_fnd *fnd, bool undo); 689 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 690 const void *key, u32 key_len, const void *param); 691 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 692 const struct ATTR_FILE_NAME *fname, 693 const struct NTFS_DUP_INFO *dup, int sync); 694 695 /* Globals from inode.c */ 696 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 697 const struct cpu_str *name); 698 int ntfs_set_size(struct inode *inode, u64 new_size); 699 int reset_log_file(struct inode *inode); 700 int ntfs_get_block(struct inode *inode, sector_t vbn, 701 struct buffer_head *bh_result, int create); 702 int ntfs_write_begin(struct file *file, struct address_space *mapping, 703 loff_t pos, u32 len, struct page **pagep, void **fsdata); 704 int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos, 705 u32 len, u32 copied, struct page *page, void *fsdata); 706 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 707 int ntfs_sync_inode(struct inode *inode); 708 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, 709 struct inode *i2); 710 int inode_write_data(struct inode *inode, const void *data, size_t bytes); 711 struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir, 712 struct dentry *dentry, 713 const struct cpu_str *uni, umode_t mode, 714 dev_t dev, const char *symname, u32 size, 715 struct ntfs_fnd *fnd); 716 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 717 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 718 void ntfs_evict_inode(struct inode *inode); 719 extern const struct inode_operations ntfs_link_inode_operations; 720 extern const struct address_space_operations ntfs_aops; 721 extern const struct address_space_operations ntfs_aops_cmpr; 722 723 /* Globals from name_i.c */ 724 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 725 const struct cpu_str *uni); 726 struct dentry *ntfs3_get_parent(struct dentry *child); 727 728 extern const struct inode_operations ntfs_dir_inode_operations; 729 extern const struct inode_operations ntfs_special_inode_operations; 730 extern const struct dentry_operations ntfs_dentry_ops; 731 732 /* Globals from record.c */ 733 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 734 void mi_put(struct mft_inode *mi); 735 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 736 int mi_read(struct mft_inode *mi, bool is_mft); 737 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); 738 // TODO: id? 739 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, 740 enum ATTR_TYPE type, const __le16 *name, 741 u8 name_len, const __le16 *id); 742 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, 743 struct ATTR_LIST_ENTRY *le) 744 { 745 return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, 746 &le->id); 747 } 748 int mi_write(struct mft_inode *mi, int wait); 749 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 750 __le16 flags, bool is_mft); 751 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, 752 const __le16 *name, u8 name_len, u32 asize, 753 u16 name_off); 754 755 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 756 struct ATTRIB *attr); 757 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 758 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 759 struct runs_tree *run, CLST len); 760 static inline bool mi_is_ref(const struct mft_inode *mi, 761 const struct MFT_REF *ref) 762 { 763 if (le32_to_cpu(ref->low) != mi->rno) 764 return false; 765 if (ref->seq != mi->mrec->seq) 766 return false; 767 768 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 769 return le16_to_cpu(ref->high) == (mi->rno >> 32); 770 #else 771 return !ref->high; 772 #endif 773 } 774 775 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 776 { 777 ref->low = cpu_to_le32(mi->rno); 778 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 779 ref->high = cpu_to_le16(mi->rno >> 32); 780 #else 781 ref->high = 0; 782 #endif 783 ref->seq = mi->mrec->seq; 784 } 785 786 /* Globals from run.c */ 787 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 788 CLST *len, size_t *index); 789 void run_truncate(struct runs_tree *run, CLST vcn); 790 void run_truncate_head(struct runs_tree *run, CLST vcn); 791 void run_truncate_around(struct runs_tree *run, CLST vcn); 792 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 793 bool is_mft); 794 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); 795 bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); 796 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 797 CLST *lcn, CLST *len); 798 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 799 800 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 801 u32 run_buf_size, CLST *packed_vcns); 802 int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 803 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 804 int run_buf_size); 805 806 #ifdef NTFS3_CHECK_FREE_CLST 807 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 808 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 809 int run_buf_size); 810 #else 811 #define run_unpack_ex run_unpack 812 #endif 813 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 814 int run_clone(const struct runs_tree *run, struct runs_tree *new_run); 815 816 /* Globals from super.c */ 817 void *ntfs_set_shared(void *ptr, u32 bytes); 818 void *ntfs_put_shared(void *ptr); 819 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 820 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 821 822 /* Globals from bitmap.c*/ 823 int __init ntfs3_init_bitmap(void); 824 void ntfs3_exit_bitmap(void); 825 void wnd_close(struct wnd_bitmap *wnd); 826 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 827 { 828 return wnd->total_zeroes; 829 } 830 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 831 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 832 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 833 int wnd_set_used_safe(struct wnd_bitmap *wnd, size_t bit, size_t bits, 834 size_t *done); 835 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 836 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 837 838 /* Possible values for 'flags' 'wnd_find'. */ 839 #define BITMAP_FIND_MARK_AS_USED 0x01 840 #define BITMAP_FIND_FULL 0x02 841 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 842 size_t flags, size_t *allocated); 843 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 844 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 845 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 846 847 void ntfs_bitmap_set_le(void *map, unsigned int start, int len); 848 void ntfs_bitmap_clear_le(void *map, unsigned int start, int len); 849 unsigned int ntfs_bitmap_weight_le(const void *bitmap, int bits); 850 851 /* Globals from upcase.c */ 852 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 853 const u16 *upcase, bool bothcase); 854 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 855 const u16 *upcase, bool bothcase); 856 unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase, 857 unsigned long hash); 858 859 /* globals from xattr.c */ 860 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 861 struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, 862 int type); 863 int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, 864 struct posix_acl *acl, int type); 865 int ntfs_init_acl(struct mnt_idmap *idmap, struct inode *inode, 866 struct inode *dir); 867 #else 868 #define ntfs_get_acl NULL 869 #define ntfs_set_acl NULL 870 #endif 871 872 int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry); 873 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 874 extern const struct xattr_handler *ntfs_xattr_handlers[]; 875 876 int ntfs_save_wsl_perm(struct inode *inode, __le16 *ea_size); 877 void ntfs_get_wsl_perm(struct inode *inode); 878 879 /* globals from lznt.c */ 880 struct lznt *get_lznt_ctx(int level); 881 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 882 void *compressed, size_t compressed_size, 883 struct lznt *ctx); 884 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 885 void *uncompressed, size_t uncompressed_size); 886 887 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 888 { 889 return sbi->volume.major_ver >= 3; 890 } 891 892 /* (sb->s_flags & SB_ACTIVE) */ 893 static inline bool is_mounted(struct ntfs_sb_info *sbi) 894 { 895 return !!sbi->sb->s_root; 896 } 897 898 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 899 { 900 return rno < MFT_REC_FREE || rno == sbi->objid_no || 901 rno == sbi->quota_no || rno == sbi->reparse_no || 902 rno == sbi->usn_jrnl_no; 903 } 904 905 static inline void ntfs_unmap_page(struct page *page) 906 { 907 kunmap(page); 908 put_page(page); 909 } 910 911 static inline struct page *ntfs_map_page(struct address_space *mapping, 912 unsigned long index) 913 { 914 struct page *page = read_mapping_page(mapping, index, NULL); 915 916 if (!IS_ERR(page)) 917 kmap(page); 918 return page; 919 } 920 921 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 922 { 923 return wnd->zone_bit; 924 } 925 926 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 927 { 928 return wnd->zone_end - wnd->zone_bit; 929 } 930 931 static inline void run_init(struct runs_tree *run) 932 { 933 run->runs = NULL; 934 run->count = 0; 935 run->allocated = 0; 936 } 937 938 static inline struct runs_tree *run_alloc(void) 939 { 940 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 941 } 942 943 static inline void run_close(struct runs_tree *run) 944 { 945 kvfree(run->runs); 946 memset(run, 0, sizeof(*run)); 947 } 948 949 static inline void run_free(struct runs_tree *run) 950 { 951 if (run) { 952 kvfree(run->runs); 953 kfree(run); 954 } 955 } 956 957 static inline bool run_is_empty(struct runs_tree *run) 958 { 959 return !run->count; 960 } 961 962 /* NTFS uses quad aligned bitmaps. */ 963 static inline size_t bitmap_size(size_t bits) 964 { 965 return ALIGN((bits + 7) >> 3, 8); 966 } 967 968 #define _100ns2seconds 10000000 969 #define SecondsToStartOf1970 0x00000002B6109100 970 971 #define NTFS_TIME_GRAN 100 972 973 /* 974 * kernel2nt - Converts in-memory kernel timestamp into nt time. 975 */ 976 static inline __le64 kernel2nt(const struct timespec64 *ts) 977 { 978 // 10^7 units of 100 nanoseconds one second 979 return cpu_to_le64(_100ns2seconds * 980 (ts->tv_sec + SecondsToStartOf1970) + 981 ts->tv_nsec / NTFS_TIME_GRAN); 982 } 983 984 /* 985 * nt2kernel - Converts on-disk nt time into kernel timestamp. 986 */ 987 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 988 { 989 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 990 991 // WARNING: do_div changes its first argument(!) 992 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 993 ts->tv_sec = t; 994 } 995 996 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 997 { 998 return sb->s_fs_info; 999 } 1000 1001 /* 1002 * ntfs_up_cluster - Align up on cluster boundary. 1003 */ 1004 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 1005 { 1006 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 1007 } 1008 1009 /* 1010 * ntfs_up_block - Align up on cluster boundary. 1011 */ 1012 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 1013 { 1014 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 1015 } 1016 1017 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 1018 { 1019 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 1020 } 1021 1022 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 1023 { 1024 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 1025 } 1026 1027 static inline struct buffer_head *ntfs_bread(struct super_block *sb, 1028 sector_t block) 1029 { 1030 struct buffer_head *bh = sb_bread(sb, block); 1031 1032 if (bh) 1033 return bh; 1034 1035 ntfs_err(sb, "failed to read volume at offset 0x%llx", 1036 (u64)block << sb->s_blocksize_bits); 1037 return NULL; 1038 } 1039 1040 static inline struct ntfs_inode *ntfs_i(struct inode *inode) 1041 { 1042 return container_of(inode, struct ntfs_inode, vfs_inode); 1043 } 1044 1045 static inline bool is_compressed(const struct ntfs_inode *ni) 1046 { 1047 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1048 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1049 } 1050 1051 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1052 { 1053 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1054 } 1055 1056 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1057 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1058 { 1059 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1060 } 1061 1062 static inline bool is_dedup(const struct ntfs_inode *ni) 1063 { 1064 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1065 } 1066 1067 static inline bool is_encrypted(const struct ntfs_inode *ni) 1068 { 1069 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1070 } 1071 1072 static inline bool is_sparsed(const struct ntfs_inode *ni) 1073 { 1074 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1075 } 1076 1077 static inline int is_resident(struct ntfs_inode *ni) 1078 { 1079 return ni->ni_flags & NI_FLAG_RESIDENT; 1080 } 1081 1082 static inline void le16_sub_cpu(__le16 *var, u16 val) 1083 { 1084 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1085 } 1086 1087 static inline void le32_sub_cpu(__le32 *var, u32 val) 1088 { 1089 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1090 } 1091 1092 static inline void nb_put(struct ntfs_buffers *nb) 1093 { 1094 u32 i, nbufs = nb->nbufs; 1095 1096 if (!nbufs) 1097 return; 1098 1099 for (i = 0; i < nbufs; i++) 1100 put_bh(nb->bh[i]); 1101 nb->nbufs = 0; 1102 } 1103 1104 static inline void put_indx_node(struct indx_node *in) 1105 { 1106 if (!in) 1107 return; 1108 1109 kfree(in->index); 1110 nb_put(&in->nb); 1111 kfree(in); 1112 } 1113 1114 static inline void mi_clear(struct mft_inode *mi) 1115 { 1116 nb_put(&mi->nb); 1117 kfree(mi->mrec); 1118 mi->mrec = NULL; 1119 } 1120 1121 static inline void ni_lock(struct ntfs_inode *ni) 1122 { 1123 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1124 } 1125 1126 static inline void ni_lock_dir(struct ntfs_inode *ni) 1127 { 1128 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1129 } 1130 1131 static inline void ni_lock_dir2(struct ntfs_inode *ni) 1132 { 1133 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT2); 1134 } 1135 1136 static inline void ni_unlock(struct ntfs_inode *ni) 1137 { 1138 mutex_unlock(&ni->ni_lock); 1139 } 1140 1141 static inline int ni_trylock(struct ntfs_inode *ni) 1142 { 1143 return mutex_trylock(&ni->ni_lock); 1144 } 1145 1146 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1147 struct ATTRIB *attr, 1148 struct runs_tree *run, CLST vcn) 1149 { 1150 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1151 attr->name_len, run, vcn); 1152 } 1153 1154 static inline void le64_sub_cpu(__le64 *var, u64 val) 1155 { 1156 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1157 } 1158 1159 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1160