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/hex.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 MAXIMUM_SHIFT_BYTES_PER_MFT 12 47 #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) 48 49 #define MAXIMUM_BYTES_PER_INDEX 4096 50 #define MAXIMUM_SHIFT_BYTES_PER_INDEX 12 51 #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) 52 53 /* NTFS specific error code when fixup failed. */ 54 #define E_NTFS_FIXUP 555 55 /* NTFS specific error code about resident->nonresident. */ 56 #define E_NTFS_NONRESIDENT 556 57 /* NTFS specific error code about punch hole. */ 58 #define E_NTFS_NOTALIGNED 557 59 /* NTFS specific error code when on-disk struct is corrupted. */ 60 #define E_NTFS_CORRUPT 558 61 62 63 /* sbi->flags */ 64 #define NTFS_FLAGS_NODISCARD 0x00000001 65 /* ntfs in shutdown state. */ 66 #define NTFS_FLAGS_SHUTDOWN_BIT 0x00000002 /* == 4*/ 67 /* Set when LogFile is replaying. */ 68 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 69 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 70 #define NTFS_FLAGS_MFTMIRR 0x00001000 71 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 72 73 74 /* ni->ni_flags */ 75 /* 76 * Data attribute is external compressed (LZX/Xpress) 77 * 1 - WOF_COMPRESSION_XPRESS4K 78 * 2 - WOF_COMPRESSION_XPRESS8K 79 * 3 - WOF_COMPRESSION_XPRESS16K 80 * 4 - WOF_COMPRESSION_LZX32K 81 */ 82 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 83 /* Data attribute is deduplicated. */ 84 #define NI_FLAG_DEDUPLICATED 0x00000010 85 #define NI_FLAG_EA 0x00000020 86 #define NI_FLAG_DIR 0x00000040 87 #define NI_FLAG_RESIDENT 0x00000080 88 #define NI_FLAG_UPDATE_PARENT 0x00000100 89 // clang-format on 90 91 struct ntfs_mount_options { 92 char *nls_name; 93 struct nls_table *nls; 94 95 kuid_t fs_uid; 96 kgid_t fs_gid; 97 u16 fs_fmask_inv; 98 u16 fs_dmask_inv; 99 100 unsigned fmask : 1; /* fmask was set. */ 101 unsigned dmask : 1; /*dmask was set. */ 102 unsigned sys_immutable : 1; /* Immutable system files. */ 103 unsigned discard : 1; /* Issue discard requests on deletions. */ 104 unsigned sparse : 1; /* Create sparse files. */ 105 unsigned showmeta : 1; /* Show meta files. */ 106 unsigned nohidden : 1; /* Do not show hidden files. */ 107 unsigned hide_dot_files : 1; /* Set hidden flag on dot files. */ 108 unsigned windows_names : 1; /* Disallow names forbidden by Windows. */ 109 unsigned force : 1; /* RW mount dirty volume. */ 110 unsigned prealloc : 1; /* Preallocate space when file is growing. */ 111 unsigned nocase : 1; /* case insensitive. */ 112 }; 113 114 /* Special value to unpack and deallocate. */ 115 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 116 117 /* TODO: Use rb tree instead of array. */ 118 struct runs_tree { 119 struct ntfs_run *runs; 120 size_t count; /* Currently used size a ntfs_run storage. */ 121 size_t allocated; /* Currently allocated ntfs_run storage size. */ 122 }; 123 124 struct ntfs_buffers { 125 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 126 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 127 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 128 u32 bytes; 129 u32 nbufs; 130 u32 off; 131 }; 132 133 enum ALLOCATE_OPT { 134 ALLOCATE_DEF = 0, // Allocate all clusters. 135 ALLOCATE_MFT = 1, // Allocate for MFT. 136 ALLOCATE_ZERO = 2, // Zeroout new allocated clusters 137 }; 138 139 enum bitmap_mutex_classes { 140 BITMAP_MUTEX_CLUSTERS = 0, 141 BITMAP_MUTEX_MFT = 1, 142 }; 143 144 struct wnd_bitmap { 145 struct super_block *sb; 146 struct rw_semaphore rw_lock; 147 148 struct runs_tree run; 149 size_t nbits; 150 151 size_t total_zeroes; // Total number of free bits. 152 u16 *free_bits; // Free bits in each window. 153 size_t nwnd; 154 u32 bits_last; // Bits in last window. 155 156 struct rb_root start_tree; // Extents, sorted by 'start'. 157 struct rb_root count_tree; // Extents, sorted by 'count + start'. 158 size_t count; // Extents count. 159 160 /* 161 * -1 Tree is activated but not updated (too many fragments). 162 * 0 - Tree is not activated. 163 * 1 - Tree is activated and updated. 164 */ 165 int uptodated; 166 size_t extent_min; // Minimal extent used while building. 167 size_t extent_max; // Upper estimate of biggest free block. 168 169 /* Zone [bit, end) */ 170 size_t zone_bit; 171 size_t zone_end; 172 173 bool inited; 174 }; 175 176 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, 177 size_t len2, const void *param); 178 179 enum index_mutex_classed { 180 INDEX_MUTEX_I30 = 0, 181 INDEX_MUTEX_SII = 1, 182 INDEX_MUTEX_SDH = 2, 183 INDEX_MUTEX_SO = 3, 184 INDEX_MUTEX_SQ = 4, 185 INDEX_MUTEX_SR = 5, 186 INDEX_MUTEX_TOTAL 187 }; 188 189 /* ntfs_index - Allocation unit inside directory. */ 190 struct ntfs_index { 191 struct runs_tree bitmap_run; 192 struct runs_tree alloc_run; 193 /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ 194 struct rw_semaphore run_lock; 195 196 /*TODO: Remove 'cmp'. */ 197 NTFS_CMP_FUNC cmp; 198 199 u8 index_bits; // log2(root->index_block_size) 200 u8 idx2vbn_bits; // log2(root->index_block_clst) 201 u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits 202 u8 type; // index_mutex_classed 203 }; 204 205 /* Minimum MFT zone. */ 206 #define NTFS_MIN_MFT_ZONE 100 207 /* Step to increase the MFT. */ 208 #define NTFS_MFT_INCREASE_STEP 1024 209 210 /* Ntfs file system in-core superblock data. */ 211 struct ntfs_sb_info { 212 struct super_block *sb; 213 214 u32 discard_granularity; 215 u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) 216 u32 bdev_blocksize_mask; // bdev_logical_block_size(bdev) - 1; 217 218 u32 cluster_size; // bytes per cluster 219 u32 cluster_mask; // == cluster_size - 1 220 u64 cluster_mask_inv; // ~(cluster_size - 1) 221 u32 block_mask; // sb->s_blocksize - 1 222 u32 blocks_per_cluster; // cluster_size / sb->s_blocksize 223 224 u32 record_size; 225 u32 index_size; 226 227 u8 cluster_bits; 228 u8 record_bits; 229 230 u64 maxbytes; // Maximum size for normal files. 231 u64 maxbytes_sparse; // Maximum size for sparse file. 232 233 unsigned long flags; // See NTFS_FLAGS_ 234 235 CLST zone_max; // Maximum MFT zone length in clusters 236 CLST bad_clusters; // The count of marked bad clusters. 237 238 u16 max_bytes_per_attr; // Maximum attribute size in record. 239 u16 attr_size_tr; // Attribute size threshold (320 bytes). 240 241 /* Records in $Extend. */ 242 CLST objid_no; 243 CLST quota_no; 244 CLST reparse_no; 245 CLST usn_jrnl_no; 246 247 struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. 248 u32 def_entries; 249 u32 ea_max_size; 250 251 struct MFT_REC *new_rec; 252 253 u16 *upcase; 254 255 struct { 256 u64 lbo, lbo2; 257 struct ntfs_inode *ni; 258 struct wnd_bitmap bitmap; // $MFT::Bitmap 259 /* 260 * MFT records [11-24) used to expand MFT itself. 261 * They always marked as used in $MFT::Bitmap 262 * 'reserved_bitmap' contains real bitmap of these records. 263 */ 264 ulong reserved_bitmap; // Bitmap of used records [11 - 24) 265 size_t next_free; // The next record to allocate from 266 size_t used; // MFT valid size in records. 267 u32 recs_mirr; // Number of records in MFTMirr 268 u8 next_reserved; 269 u8 reserved_bitmap_inited; 270 } mft; 271 272 struct { 273 struct wnd_bitmap bitmap; // $Bitmap::Data 274 CLST next_free_lcn; 275 } used; 276 277 struct { 278 u64 size; // In bytes. 279 u64 blocks; // In blocks. 280 u64 ser_num; 281 struct ntfs_inode *ni; 282 __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. 283 u8 major_ver; 284 u8 minor_ver; 285 char label[FSLABEL_MAX]; 286 bool real_dirty; // Real fs state. 287 } volume; 288 289 struct { 290 struct ntfs_index index_sii; 291 struct ntfs_index index_sdh; 292 struct ntfs_inode *ni; 293 u32 next_id; 294 u64 next_off; 295 __le32 def_security_id; 296 } security; 297 298 struct { 299 struct ntfs_index index_r; 300 struct ntfs_inode *ni; 301 u64 max_size; // 16K 302 } reparse; 303 304 struct { 305 struct ntfs_index index_o; 306 struct ntfs_inode *ni; 307 } objid; 308 309 struct { 310 struct mutex mtx_lznt; 311 struct lznt *lznt; 312 #ifdef CONFIG_NTFS3_LZX_XPRESS 313 struct mutex mtx_xpress; 314 struct xpress_decompressor *xpress; 315 struct mutex mtx_lzx; 316 struct lzx_decompressor *lzx; 317 #endif 318 } compress; 319 320 struct ntfs_mount_options *options; 321 struct ratelimit_state msg_ratelimit; 322 struct proc_dir_entry *procdir; 323 }; 324 325 /* One MFT record(usually 1024 bytes), consists of attributes. */ 326 struct mft_inode { 327 struct rb_node node; 328 struct ntfs_sb_info *sbi; 329 330 struct MFT_REC *mrec; 331 struct ntfs_buffers nb; 332 333 CLST rno; 334 bool dirty; 335 }; 336 337 /* Nested class for ntfs_inode::ni_lock. */ 338 enum ntfs_inode_mutex_lock_class { 339 NTFS_INODE_MUTEX_DIRTY = 1, 340 NTFS_INODE_MUTEX_SECURITY, 341 NTFS_INODE_MUTEX_OBJID, 342 NTFS_INODE_MUTEX_REPARSE, 343 NTFS_INODE_MUTEX_NORMAL, 344 NTFS_INODE_MUTEX_PARENT, 345 NTFS_INODE_MUTEX_PARENT2, 346 }; 347 348 /* 349 * struct ntfs_inode 350 * 351 * Ntfs inode - extends linux inode. consists of one or more MFT inodes. 352 */ 353 struct ntfs_inode { 354 struct mft_inode mi; // base record 355 356 /* 357 * Valid size: [0 - i_valid) - these range in file contains valid data. 358 * Range [i_valid - inode->i_size) - contains 0. 359 * Usually i_valid <= inode->i_size. 360 */ 361 u64 i_valid; 362 struct timespec64 i_crtime; 363 364 struct mutex ni_lock; 365 366 /* File attributes from std. */ 367 enum FILE_ATTRIBUTE std_fa; 368 __le32 std_security_id; 369 370 /* 371 * Tree of mft_inode. 372 * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes 373 * e.g. file becomes too fragmented or contains a lot of names. 374 */ 375 struct rb_root mi_tree; 376 377 /* 378 * This member is used in ntfs_readdir to ensure that all subrecords are loaded 379 */ 380 u8 mi_loaded; 381 382 /* 383 * Use this field to avoid any write(s). 384 * If inode is bad during initialization - use make_bad_inode 385 * If inode is bad during operations - use this field 386 */ 387 u8 ni_bad; 388 389 union { 390 struct ntfs_index dir; 391 struct { 392 struct rw_semaphore run_lock; 393 struct runs_tree run; 394 #ifdef CONFIG_NTFS3_LZX_XPRESS 395 struct folio *offs_folio; 396 #endif 397 } file; 398 }; 399 400 struct { 401 struct runs_tree run; 402 struct ATTR_LIST_ENTRY *le; // 1K aligned memory. 403 size_t size; 404 bool dirty; 405 } attr_list; 406 407 size_t ni_flags; // NI_FLAG_XXX 408 409 struct inode vfs_inode; 410 }; 411 412 struct indx_node { 413 struct ntfs_buffers nb; 414 struct INDEX_BUFFER *index; 415 }; 416 417 struct ntfs_fnd { 418 int level; 419 struct indx_node *nodes[20]; 420 struct NTFS_DE *de[20]; 421 struct NTFS_DE *root_de; 422 }; 423 424 enum REPARSE_SIGN { 425 REPARSE_NONE = 0, 426 REPARSE_COMPRESSED = 1, 427 REPARSE_DEDUPLICATED = 2, 428 REPARSE_LINK = 3 429 }; 430 431 /* Functions from attrib.c */ 432 int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, 433 CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, 434 enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, 435 CLST *new_lcn, CLST *new_len); 436 int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, 437 struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, 438 u64 new_size, struct runs_tree *run, 439 struct ATTRIB **ins_attr, struct page *page); 440 int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, 441 const __le16 *name, u8 name_len, struct runs_tree *run, 442 u64 new_size, const u64 *new_valid, bool keep_prealloc, 443 struct ATTRIB **ret); 444 int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, 445 CLST *len, bool *new, bool zero); 446 int attr_data_read_resident(struct ntfs_inode *ni, struct folio *folio); 447 int attr_data_write_resident(struct ntfs_inode *ni, struct folio *folio); 448 int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, 449 const __le16 *name, u8 name_len, struct runs_tree *run, 450 CLST vcn); 451 int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, 452 const __le16 *name, u8 name_len, struct runs_tree *run, 453 u64 from, u64 to); 454 int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, 455 struct runs_tree *run, u64 frame, u64 frames, 456 u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); 457 int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, 458 CLST frame, CLST *clst_data, 459 struct runs_tree *run); 460 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, 461 u64 new_valid); 462 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 463 int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 464 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); 465 int attr_force_nonresident(struct ntfs_inode *ni); 466 467 /* Functions from attrlist.c */ 468 void al_destroy(struct ntfs_inode *ni); 469 bool al_verify(struct ntfs_inode *ni); 470 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); 471 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, 472 struct ATTR_LIST_ENTRY *le); 473 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, 474 struct ATTR_LIST_ENTRY *le, 475 const struct ATTRIB *attr); 476 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, 477 struct ATTR_LIST_ENTRY *le, 478 enum ATTR_TYPE type, const __le16 *name, 479 u8 name_len, const CLST *vcn); 480 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, 481 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, 482 struct ATTR_LIST_ENTRY **new_le); 483 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); 484 int al_update(struct ntfs_inode *ni, int sync); 485 static inline size_t al_aligned(size_t size) 486 { 487 return size_add(size, 1023) & ~(size_t)1023; 488 } 489 490 /* Globals from bitfunc.c */ 491 bool are_bits_clear(const void *map, size_t bit, size_t nbits); 492 bool are_bits_set(const void *map, size_t bit, size_t nbits); 493 size_t get_set_bits_ex(const void *map, size_t bit, size_t nbits); 494 495 /* Globals from dir.c */ 496 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, 497 u8 *buf, int buf_len); 498 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 499 struct cpu_str *uni, u32 max_ulen, 500 enum utf16_endian endian); 501 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 502 struct ntfs_fnd *fnd); 503 bool dir_is_empty(struct inode *dir); 504 extern const struct file_operations ntfs_dir_operations; 505 extern const struct file_operations ntfs_legacy_dir_operations; 506 507 /* Globals from file.c */ 508 int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, 509 struct kstat *stat, u32 request_mask, u32 flags); 510 int ntfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 511 struct iattr *attr); 512 int ntfs_file_open(struct inode *inode, struct file *file); 513 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 514 __u64 start, __u64 len); 515 long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg); 516 long ntfs_compat_ioctl(struct file *filp, u32 cmd, unsigned long arg); 517 extern const struct inode_operations ntfs_special_inode_operations; 518 extern const struct inode_operations ntfs_file_inode_operations; 519 extern const struct file_operations ntfs_file_operations; 520 extern const struct file_operations ntfs_legacy_file_operations; 521 522 /* Globals from frecord.c */ 523 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 524 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 525 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 526 void ni_clear(struct ntfs_inode *ni); 527 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 528 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 529 struct mft_inode **mi); 530 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 531 struct ATTR_LIST_ENTRY **entry_o, 532 enum ATTR_TYPE type, const __le16 *name, 533 u8 name_len, const CLST *vcn, 534 struct mft_inode **mi); 535 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 536 struct ATTR_LIST_ENTRY **le, 537 struct mft_inode **mi); 538 int ni_load_all_mi(struct ntfs_inode *ni); 539 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 540 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 541 const __le16 *name, u8 name_len, bool base_only, 542 const __le16 *id); 543 int ni_create_attr_list(struct ntfs_inode *ni); 544 int ni_expand_list(struct ntfs_inode *ni); 545 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 546 const __le16 *name, u8 name_len, 547 const struct runs_tree *run, CLST svcn, CLST len, 548 __le16 flags, struct ATTRIB **new_attr, 549 struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); 550 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 551 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 552 struct ATTRIB **new_attr, struct mft_inode **mi, 553 struct ATTR_LIST_ENTRY **le); 554 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 555 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 556 int ni_delete_all(struct ntfs_inode *ni); 557 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 558 const struct le_str *uni, 559 const struct MFT_REF *home, 560 struct mft_inode **mi, 561 struct ATTR_LIST_ENTRY **entry); 562 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 563 struct mft_inode **mi, 564 struct ATTR_LIST_ENTRY **entry); 565 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 566 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 567 struct REPARSE_DATA_BUFFER *buffer); 568 int ni_write_inode(struct inode *inode, int sync, const char *hint); 569 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 570 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 571 __u64 vbo, __u64 len); 572 int ni_readpage_cmpr(struct ntfs_inode *ni, struct folio *folio); 573 int ni_decompress_file(struct ntfs_inode *ni); 574 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 575 u32 pages_per_frame, int copy); 576 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 577 u32 pages_per_frame); 578 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 579 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 580 581 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 582 struct NTFS_DE *de, struct NTFS_DE *de2, 583 int undo_step); 584 585 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 586 struct NTFS_DE *de); 587 588 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 589 struct ntfs_inode *ni, struct NTFS_DE *de, 590 struct NTFS_DE *new_de); 591 592 bool ni_is_dirty(struct inode *inode); 593 594 /* Globals from fslog.c */ 595 bool check_index_header(const struct INDEX_HDR *hdr, size_t bytes); 596 int log_replay(struct ntfs_inode *ni, bool *initialized); 597 598 /* Globals from fsntfs.c */ 599 struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block); 600 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 601 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 602 bool simple); 603 int ntfs_extend_init(struct ntfs_sb_info *sbi); 604 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 605 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 606 CLST *new_lcn, CLST *new_len, 607 enum ALLOCATE_OPT opt); 608 bool ntfs_check_for_free_space(struct ntfs_sb_info *sbi, CLST clen, CLST mlen); 609 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 610 struct ntfs_inode *ni, struct mft_inode **mi); 611 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); 612 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 613 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 614 void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 615 void ntfs_bad_inode(struct inode *inode, const char *hint); 616 #define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) 617 enum NTFS_DIRTY_FLAGS { 618 NTFS_DIRTY_CLEAR = 0, 619 NTFS_DIRTY_DIRTY = 1, 620 NTFS_DIRTY_ERROR = 2, 621 }; 622 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 623 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 624 const void *buffer, int wait); 625 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 626 u64 vbo, const void *buf, size_t bytes, int sync); 627 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 628 const struct runs_tree *run, u64 vbo); 629 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 630 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 631 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 632 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 633 struct ntfs_buffers *nb); 634 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 635 u32 bytes, struct ntfs_buffers *nb); 636 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 637 struct ntfs_buffers *nb, int sync); 638 int ntfs_read_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 639 void *buf, u64 vbo, size_t bytes, int wr); 640 static inline int ntfs_read_run(struct ntfs_sb_info *sbi, 641 const struct runs_tree *run, void *buf, u64 vbo, 642 size_t bytes) 643 { 644 return ntfs_read_write_run(sbi, run, buf, vbo, bytes, 0); 645 } 646 static inline int ntfs_write_run(struct ntfs_sb_info *sbi, 647 const struct runs_tree *run, void *buf, 648 u64 vbo, size_t bytes) 649 { 650 return ntfs_read_write_run(sbi, run, buf, vbo, bytes, 1); 651 } 652 653 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 654 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 655 u64 vbo, u64 *lbo, u64 *bytes); 656 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 657 enum RECORD_FLAG flag); 658 extern const u8 s_default_security[0x50]; 659 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 660 int ntfs_security_init(struct ntfs_sb_info *sbi); 661 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 662 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 663 size_t *size); 664 int ntfs_insert_security(struct ntfs_sb_info *sbi, 665 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 666 u32 size, __le32 *security_id, bool *inserted); 667 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 668 int ntfs_objid_init(struct ntfs_sb_info *sbi); 669 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 670 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 671 const struct MFT_REF *ref); 672 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 673 const struct MFT_REF *ref); 674 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 675 int run_deallocate(struct ntfs_sb_info *sbi, const struct runs_tree *run, 676 bool trim); 677 bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name); 678 int ntfs_set_label(struct ntfs_sb_info *sbi, u8 *label, int len); 679 680 /* Globals from index.c */ 681 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 682 void fnd_clear(struct ntfs_fnd *fnd); 683 static inline struct ntfs_fnd *fnd_get(void) 684 { 685 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 686 } 687 static inline void fnd_put(struct ntfs_fnd *fnd) 688 { 689 if (fnd) { 690 fnd_clear(fnd); 691 kfree(fnd); 692 } 693 } 694 void indx_clear(struct ntfs_index *idx); 695 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 696 const struct ATTRIB *attr, enum index_mutex_classed type); 697 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 698 struct ATTRIB **attr, struct mft_inode **mi); 699 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 700 struct indx_node **node); 701 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 702 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 703 const void *param, int *diff, struct NTFS_DE **entry, 704 struct ntfs_fnd *fnd); 705 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 706 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 707 struct ntfs_fnd *fnd); 708 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 709 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 710 size_t *off, struct ntfs_fnd *fnd); 711 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 712 const struct NTFS_DE *new_de, const void *param, 713 struct ntfs_fnd *fnd, bool undo); 714 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 715 const void *key, u32 key_len, const void *param); 716 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 717 const struct ATTR_FILE_NAME *fname, 718 const struct NTFS_DUP_INFO *dup, int sync); 719 720 /* Globals from inode.c */ 721 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 722 const struct cpu_str *name); 723 int ntfs_set_size(struct inode *inode, u64 new_size); 724 int ntfs_get_block(struct inode *inode, sector_t vbn, 725 struct buffer_head *bh_result, int create); 726 int ntfs_write_begin(const struct kiocb *iocb, struct address_space *mapping, 727 loff_t pos, u32 len, struct folio **foliop, void **fsdata); 728 int ntfs_write_end(const struct kiocb *iocb, struct address_space *mapping, 729 loff_t pos, u32 len, u32 copied, struct folio *folio, 730 void *fsdata); 731 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 732 int ntfs_sync_inode(struct inode *inode); 733 int inode_read_data(struct inode *inode, void *data, size_t bytes); 734 int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir, 735 struct dentry *dentry, const struct cpu_str *uni, 736 umode_t mode, dev_t dev, const char *symname, u32 size, 737 struct ntfs_fnd *fnd); 738 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 739 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 740 void ntfs_evict_inode(struct inode *inode); 741 extern const struct inode_operations ntfs_link_inode_operations; 742 extern const struct address_space_operations ntfs_aops; 743 extern const struct address_space_operations ntfs_aops_cmpr; 744 745 /* Globals from name_i.c */ 746 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 747 const struct cpu_str *uni); 748 struct dentry *ntfs3_get_parent(struct dentry *child); 749 750 extern const struct inode_operations ntfs_dir_inode_operations; 751 extern const struct inode_operations ntfs_special_inode_operations; 752 extern const struct dentry_operations ntfs_dentry_ops; 753 754 /* Globals from record.c */ 755 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 756 void mi_put(struct mft_inode *mi); 757 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 758 int mi_read(struct mft_inode *mi, bool is_mft); 759 struct ATTRIB *mi_enum_attr(struct ntfs_inode *ni, struct mft_inode *mi, 760 struct ATTRIB *attr); 761 struct ATTRIB *mi_find_attr(struct ntfs_inode *ni, struct mft_inode *mi, 762 struct ATTRIB *attr, enum ATTR_TYPE type, 763 const __le16 *name, u8 name_len, const __le16 *id); 764 static inline struct ATTRIB *rec_find_attr_le(struct ntfs_inode *ni, 765 struct mft_inode *rec, 766 struct ATTR_LIST_ENTRY *le) 767 { 768 return mi_find_attr(ni, rec, NULL, le->type, le_name(le), le->name_len, 769 &le->id); 770 } 771 int mi_write(struct mft_inode *mi, int wait); 772 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 773 __le16 flags, bool is_mft); 774 struct ATTRIB *mi_insert_attr(struct ntfs_inode *ni, struct mft_inode *mi, 775 enum ATTR_TYPE type, const __le16 *name, 776 u8 name_len, u32 asize, u16 name_off); 777 778 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 779 struct ATTRIB *attr); 780 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 781 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 782 const struct runs_tree *run, CLST len); 783 static inline bool mi_is_ref(const struct mft_inode *mi, 784 const struct MFT_REF *ref) 785 { 786 if (le32_to_cpu(ref->low) != mi->rno) 787 return false; 788 if (ref->seq != mi->mrec->seq) 789 return false; 790 791 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 792 return le16_to_cpu(ref->high) == (mi->rno >> 32); 793 #else 794 return !ref->high; 795 #endif 796 } 797 798 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 799 { 800 ref->low = cpu_to_le32(mi->rno); 801 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 802 ref->high = cpu_to_le16(mi->rno >> 32); 803 #else 804 ref->high = 0; 805 #endif 806 ref->seq = mi->mrec->seq; 807 } 808 809 /* Globals from run.c */ 810 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 811 CLST *len, size_t *index); 812 void run_truncate(struct runs_tree *run, CLST vcn); 813 void run_truncate_head(struct runs_tree *run, CLST vcn); 814 void run_truncate_around(struct runs_tree *run, CLST vcn); 815 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 816 bool is_mft); 817 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len, CLST sub); 818 bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); 819 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 820 CLST *lcn, CLST *len); 821 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 822 823 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 824 u32 run_buf_size, CLST *packed_vcns); 825 int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 826 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 827 int run_buf_size); 828 829 #ifdef NTFS3_CHECK_FREE_CLST 830 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 831 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 832 int run_buf_size); 833 #else 834 #define run_unpack_ex run_unpack 835 #endif 836 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 837 int run_clone(const struct runs_tree *run, struct runs_tree *new_run); 838 839 /* Globals from super.c */ 840 void *ntfs_set_shared(void *ptr, u32 bytes); 841 void *ntfs_put_shared(void *ptr); 842 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 843 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 844 845 /* Globals from bitmap.c*/ 846 int __init ntfs3_init_bitmap(void); 847 void ntfs3_exit_bitmap(void); 848 void wnd_close(struct wnd_bitmap *wnd); 849 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 850 { 851 return wnd->total_zeroes; 852 } 853 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 854 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 855 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 856 int wnd_set_used_safe(struct wnd_bitmap *wnd, size_t bit, size_t bits, 857 size_t *done); 858 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 859 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 860 861 /* Possible values for 'flags' 'wnd_find'. */ 862 #define BITMAP_FIND_MARK_AS_USED 0x01 863 #define BITMAP_FIND_FULL 0x02 864 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 865 size_t flags, size_t *allocated); 866 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 867 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 868 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 869 870 void ntfs_bitmap_set_le(void *map, unsigned int start, int len); 871 void ntfs_bitmap_clear_le(void *map, unsigned int start, int len); 872 unsigned int ntfs_bitmap_weight_le(const void *bitmap, int bits); 873 874 /* Globals from upcase.c */ 875 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 876 const u16 *upcase, bool bothcase); 877 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 878 const u16 *upcase, bool bothcase); 879 unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase, 880 unsigned long hash); 881 882 /* globals from xattr.c */ 883 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 884 struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, 885 int type); 886 int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, 887 struct posix_acl *acl, int type); 888 int ntfs_init_acl(struct mnt_idmap *idmap, struct inode *inode, 889 struct inode *dir); 890 #else 891 #define ntfs_get_acl NULL 892 #define ntfs_set_acl NULL 893 #endif 894 895 int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry); 896 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 897 extern const struct xattr_handler *const ntfs_xattr_handlers[]; 898 899 int ntfs_save_wsl_perm(struct inode *inode, __le32 *ea_size); 900 void ntfs_get_wsl_perm(struct inode *inode); 901 902 /* globals from lznt.c */ 903 struct lznt *get_lznt_ctx(int level); 904 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 905 void *compressed, size_t compressed_size, 906 struct lznt *ctx); 907 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 908 void *uncompressed, size_t uncompressed_size); 909 910 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 911 { 912 return sbi->volume.major_ver >= 3; 913 } 914 915 /* (sb->s_flags & SB_ACTIVE) */ 916 static inline bool is_mounted(struct ntfs_sb_info *sbi) 917 { 918 return !!sbi->sb->s_root; 919 } 920 921 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 922 { 923 return rno < MFT_REC_FREE || rno == sbi->objid_no || 924 rno == sbi->quota_no || rno == sbi->reparse_no || 925 rno == sbi->usn_jrnl_no; 926 } 927 928 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 929 { 930 return wnd->zone_bit; 931 } 932 933 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 934 { 935 return wnd->zone_end - wnd->zone_bit; 936 } 937 938 static inline void run_init(struct runs_tree *run) 939 { 940 run->runs = NULL; 941 run->count = 0; 942 run->allocated = 0; 943 } 944 945 static inline struct runs_tree *run_alloc(void) 946 { 947 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 948 } 949 950 static inline void run_close(struct runs_tree *run) 951 { 952 kvfree(run->runs); 953 memset(run, 0, sizeof(*run)); 954 } 955 956 static inline void run_free(struct runs_tree *run) 957 { 958 if (run) { 959 kvfree(run->runs); 960 kfree(run); 961 } 962 } 963 964 static inline bool run_is_empty(struct runs_tree *run) 965 { 966 return !run->count; 967 } 968 969 /* NTFS uses quad aligned bitmaps. */ 970 static inline size_t ntfs3_bitmap_size(size_t bits) 971 { 972 return BITS_TO_U64(bits) * sizeof(u64); 973 } 974 975 #define _100ns2seconds 10000000 976 #define SecondsToStartOf1970 0x00000002B6109100 977 978 #define NTFS_TIME_GRAN 100 979 980 /* 981 * kernel2nt - Converts in-memory kernel timestamp into nt time. 982 */ 983 static inline __le64 kernel2nt(const struct timespec64 *ts) 984 { 985 // 10^7 units of 100 nanoseconds one second 986 return cpu_to_le64(_100ns2seconds * 987 (ts->tv_sec + SecondsToStartOf1970) + 988 ts->tv_nsec / NTFS_TIME_GRAN); 989 } 990 991 /* 992 * nt2kernel - Converts on-disk nt time into kernel timestamp. 993 */ 994 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 995 { 996 s32 t32; 997 /* use signed 64 bit to support timestamps prior to epoch. xfstest 258. */ 998 s64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 999 1000 ts->tv_sec = div_s64_rem(t, _100ns2seconds, &t32); 1001 ts->tv_nsec = t32 * 100; 1002 } 1003 1004 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 1005 { 1006 return sb->s_fs_info; 1007 } 1008 1009 static inline int ntfs3_forced_shutdown(struct super_block *sb) 1010 { 1011 return test_bit(NTFS_FLAGS_SHUTDOWN_BIT, &ntfs_sb(sb)->flags); 1012 } 1013 1014 /* 1015 * ntfs_up_cluster - Align up on cluster boundary. 1016 */ 1017 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 1018 { 1019 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 1020 } 1021 1022 /* 1023 * ntfs_up_block - Align up on cluster boundary. 1024 */ 1025 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 1026 { 1027 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 1028 } 1029 1030 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 1031 { 1032 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 1033 } 1034 1035 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 1036 { 1037 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 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 bool is_bad_ni(const struct ntfs_inode *ni) 1052 { 1053 return ni->ni_bad; 1054 } 1055 1056 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1057 { 1058 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1059 } 1060 1061 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1062 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1063 { 1064 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1065 } 1066 1067 static inline bool is_dedup(const struct ntfs_inode *ni) 1068 { 1069 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1070 } 1071 1072 static inline bool is_encrypted(const struct ntfs_inode *ni) 1073 { 1074 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1075 } 1076 1077 static inline bool is_sparsed(const struct ntfs_inode *ni) 1078 { 1079 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1080 } 1081 1082 static inline int is_resident(struct ntfs_inode *ni) 1083 { 1084 return ni->ni_flags & NI_FLAG_RESIDENT; 1085 } 1086 1087 static inline void le16_sub_cpu(__le16 *var, u16 val) 1088 { 1089 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1090 } 1091 1092 static inline void le32_sub_cpu(__le32 *var, u32 val) 1093 { 1094 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1095 } 1096 1097 static inline void nb_put(struct ntfs_buffers *nb) 1098 { 1099 u32 i, nbufs = nb->nbufs; 1100 1101 if (!nbufs) 1102 return; 1103 1104 for (i = 0; i < nbufs; i++) 1105 put_bh(nb->bh[i]); 1106 nb->nbufs = 0; 1107 } 1108 1109 static inline void put_indx_node(struct indx_node *in) 1110 { 1111 if (!in) 1112 return; 1113 1114 kfree(in->index); 1115 nb_put(&in->nb); 1116 kfree(in); 1117 } 1118 1119 static inline void mi_clear(struct mft_inode *mi) 1120 { 1121 nb_put(&mi->nb); 1122 kfree(mi->mrec); 1123 mi->mrec = NULL; 1124 } 1125 1126 static inline void ni_lock(struct ntfs_inode *ni) 1127 { 1128 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1129 } 1130 1131 static inline void ni_lock_dir(struct ntfs_inode *ni) 1132 { 1133 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1134 } 1135 1136 static inline void ni_lock_dir2(struct ntfs_inode *ni) 1137 { 1138 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT2); 1139 } 1140 1141 static inline void ni_unlock(struct ntfs_inode *ni) 1142 { 1143 mutex_unlock(&ni->ni_lock); 1144 } 1145 1146 static inline int ni_trylock(struct ntfs_inode *ni) 1147 { 1148 return mutex_trylock(&ni->ni_lock); 1149 } 1150 1151 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1152 struct ATTRIB *attr, 1153 struct runs_tree *run, CLST vcn) 1154 { 1155 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1156 attr->name_len, run, vcn); 1157 } 1158 1159 static inline void le64_sub_cpu(__le64 *var, u64 val) 1160 { 1161 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1162 } 1163 1164 #if IS_ENABLED(CONFIG_NTFS_FS) 1165 bool is_legacy_ntfs(struct super_block *sb); 1166 #else 1167 static inline bool is_legacy_ntfs(struct super_block *sb) 1168 { 1169 return false; 1170 } 1171 #endif 1172 1173 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1174