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 MAXIMUM_SHIFT_BYTES_PER_MFT 12 46 #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) 47 48 #define MAXIMUM_BYTES_PER_INDEX 4096 49 #define MAXIMUM_SHIFT_BYTES_PER_INDEX 12 50 #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) 51 52 /* NTFS specific error code when fixup failed. */ 53 #define E_NTFS_FIXUP 555 54 /* NTFS specific error code about resident->nonresident. */ 55 #define E_NTFS_NONRESIDENT 556 56 /* NTFS specific error code about punch hole. */ 57 #define E_NTFS_NOTALIGNED 557 58 /* NTFS specific error code when on-disk struct is corrupted. */ 59 #define E_NTFS_CORRUPT 558 60 61 62 /* sbi->flags */ 63 #define NTFS_FLAGS_NODISCARD 0x00000001 64 /* ntfs in shutdown state. */ 65 #define NTFS_FLAGS_SHUTDOWN_BIT 0x00000002 /* == 4*/ 66 /* Set when LogFile is replaying. */ 67 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 68 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 69 #define NTFS_FLAGS_MFTMIRR 0x00001000 70 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 71 72 73 /* ni->ni_flags */ 74 /* 75 * Data attribute is external compressed (LZX/Xpress) 76 * 1 - WOF_COMPRESSION_XPRESS4K 77 * 2 - WOF_COMPRESSION_XPRESS8K 78 * 3 - WOF_COMPRESSION_XPRESS16K 79 * 4 - WOF_COMPRESSION_LZX32K 80 */ 81 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 82 /* Data attribute is deduplicated. */ 83 #define NI_FLAG_DEDUPLICATED 0x00000010 84 #define NI_FLAG_EA 0x00000020 85 #define NI_FLAG_DIR 0x00000040 86 #define NI_FLAG_RESIDENT 0x00000080 87 #define NI_FLAG_UPDATE_PARENT 0x00000100 88 // clang-format on 89 90 struct ntfs_mount_options { 91 char *nls_name; 92 struct nls_table *nls; 93 94 kuid_t fs_uid; 95 kgid_t fs_gid; 96 u16 fs_fmask_inv; 97 u16 fs_dmask_inv; 98 99 unsigned fmask : 1; /* fmask was set. */ 100 unsigned dmask : 1; /*dmask was set. */ 101 unsigned sys_immutable : 1; /* Immutable system files. */ 102 unsigned discard : 1; /* Issue discard requests on deletions. */ 103 unsigned sparse : 1; /* Create sparse files. */ 104 unsigned showmeta : 1; /* Show meta files. */ 105 unsigned nohidden : 1; /* Do not show hidden files. */ 106 unsigned hide_dot_files : 1; /* Set hidden flag on dot files. */ 107 unsigned windows_names : 1; /* Disallow names forbidden by Windows. */ 108 unsigned force : 1; /* RW mount dirty volume. */ 109 unsigned prealloc : 1; /* Preallocate space when file is growing. */ 110 unsigned nocase : 1; /* case insensitive. */ 111 }; 112 113 /* Special value to unpack and deallocate. */ 114 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 115 116 /* TODO: Use rb tree instead of array. */ 117 struct runs_tree { 118 struct ntfs_run *runs; 119 size_t count; /* Currently used size a ntfs_run storage. */ 120 size_t allocated; /* Currently allocated ntfs_run storage size. */ 121 }; 122 123 struct ntfs_buffers { 124 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 125 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 126 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 127 u32 bytes; 128 u32 nbufs; 129 u32 off; 130 }; 131 132 enum ALLOCATE_OPT { 133 ALLOCATE_DEF = 0, // Allocate all clusters. 134 ALLOCATE_MFT = 1, // Allocate for MFT. 135 ALLOCATE_ZERO = 2, // Zeroout new allocated clusters 136 }; 137 138 enum bitmap_mutex_classes { 139 BITMAP_MUTEX_CLUSTERS = 0, 140 BITMAP_MUTEX_MFT = 1, 141 }; 142 143 struct wnd_bitmap { 144 struct super_block *sb; 145 struct rw_semaphore rw_lock; 146 147 struct runs_tree run; 148 size_t nbits; 149 150 size_t total_zeroes; // Total number of free bits. 151 u16 *free_bits; // Free bits in each window. 152 size_t nwnd; 153 u32 bits_last; // Bits in last window. 154 155 struct rb_root start_tree; // Extents, sorted by 'start'. 156 struct rb_root count_tree; // Extents, sorted by 'count + start'. 157 size_t count; // Extents count. 158 159 /* 160 * -1 Tree is activated but not updated (too many fragments). 161 * 0 - Tree is not activated. 162 * 1 - Tree is activated and updated. 163 */ 164 int uptodated; 165 size_t extent_min; // Minimal extent used while building. 166 size_t extent_max; // Upper estimate of biggest free block. 167 168 /* Zone [bit, end) */ 169 size_t zone_bit; 170 size_t zone_end; 171 172 bool inited; 173 }; 174 175 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, 176 size_t len2, const void *param); 177 178 enum index_mutex_classed { 179 INDEX_MUTEX_I30 = 0, 180 INDEX_MUTEX_SII = 1, 181 INDEX_MUTEX_SDH = 2, 182 INDEX_MUTEX_SO = 3, 183 INDEX_MUTEX_SQ = 4, 184 INDEX_MUTEX_SR = 5, 185 INDEX_MUTEX_TOTAL 186 }; 187 188 /* ntfs_index - Allocation unit inside directory. */ 189 struct ntfs_index { 190 struct runs_tree bitmap_run; 191 struct runs_tree alloc_run; 192 /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ 193 struct rw_semaphore run_lock; 194 195 /*TODO: Remove 'cmp'. */ 196 NTFS_CMP_FUNC cmp; 197 198 u8 index_bits; // log2(root->index_block_size) 199 u8 idx2vbn_bits; // log2(root->index_block_clst) 200 u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits 201 u8 type; // index_mutex_classed 202 }; 203 204 /* Minimum MFT zone. */ 205 #define NTFS_MIN_MFT_ZONE 100 206 /* Step to increase the MFT. */ 207 #define NTFS_MFT_INCREASE_STEP 1024 208 209 /* Ntfs file system in-core superblock data. */ 210 struct ntfs_sb_info { 211 struct super_block *sb; 212 213 u32 discard_granularity; 214 u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) 215 216 u32 cluster_size; // bytes per cluster 217 u32 cluster_mask; // == cluster_size - 1 218 u64 cluster_mask_inv; // ~(cluster_size - 1) 219 u32 block_mask; // sb->s_blocksize - 1 220 u32 blocks_per_cluster; // cluster_size / sb->s_blocksize 221 222 u32 record_size; 223 u32 index_size; 224 225 u8 cluster_bits; 226 u8 record_bits; 227 228 u64 maxbytes; // Maximum size for normal files. 229 u64 maxbytes_sparse; // Maximum size for sparse file. 230 231 unsigned long flags; // See NTFS_FLAGS_ 232 233 CLST zone_max; // Maximum MFT zone length in clusters 234 CLST bad_clusters; // The count of marked bad clusters. 235 236 u16 max_bytes_per_attr; // Maximum attribute size in record. 237 u16 attr_size_tr; // Attribute size threshold (320 bytes). 238 239 /* Records in $Extend. */ 240 CLST objid_no; 241 CLST quota_no; 242 CLST reparse_no; 243 CLST usn_jrnl_no; 244 245 struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. 246 u32 def_entries; 247 u32 ea_max_size; 248 249 struct MFT_REC *new_rec; 250 251 u16 *upcase; 252 253 struct { 254 u64 lbo, lbo2; 255 struct ntfs_inode *ni; 256 struct wnd_bitmap bitmap; // $MFT::Bitmap 257 /* 258 * MFT records [11-24) used to expand MFT itself. 259 * They always marked as used in $MFT::Bitmap 260 * 'reserved_bitmap' contains real bitmap of these records. 261 */ 262 ulong reserved_bitmap; // Bitmap of used records [11 - 24) 263 size_t next_free; // The next record to allocate from 264 size_t used; // MFT valid size in records. 265 u32 recs_mirr; // Number of records in MFTMirr 266 u8 next_reserved; 267 u8 reserved_bitmap_inited; 268 } mft; 269 270 struct { 271 struct wnd_bitmap bitmap; // $Bitmap::Data 272 CLST next_free_lcn; 273 } used; 274 275 struct { 276 u64 size; // In bytes. 277 u64 blocks; // In blocks. 278 u64 ser_num; 279 struct ntfs_inode *ni; 280 __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. 281 u8 major_ver; 282 u8 minor_ver; 283 char label[256]; 284 bool real_dirty; // Real fs state. 285 } volume; 286 287 struct { 288 struct ntfs_index index_sii; 289 struct ntfs_index index_sdh; 290 struct ntfs_inode *ni; 291 u32 next_id; 292 u64 next_off; 293 __le32 def_security_id; 294 } security; 295 296 struct { 297 struct ntfs_index index_r; 298 struct ntfs_inode *ni; 299 u64 max_size; // 16K 300 } reparse; 301 302 struct { 303 struct ntfs_index index_o; 304 struct ntfs_inode *ni; 305 } objid; 306 307 struct { 308 struct mutex mtx_lznt; 309 struct lznt *lznt; 310 #ifdef CONFIG_NTFS3_LZX_XPRESS 311 struct mutex mtx_xpress; 312 struct xpress_decompressor *xpress; 313 struct mutex mtx_lzx; 314 struct lzx_decompressor *lzx; 315 #endif 316 } compress; 317 318 struct ntfs_mount_options *options; 319 struct ratelimit_state msg_ratelimit; 320 struct proc_dir_entry *procdir; 321 }; 322 323 /* One MFT record(usually 1024 bytes), consists of attributes. */ 324 struct mft_inode { 325 struct rb_node node; 326 struct ntfs_sb_info *sbi; 327 328 struct MFT_REC *mrec; 329 struct ntfs_buffers nb; 330 331 CLST rno; 332 bool dirty; 333 }; 334 335 /* Nested class for ntfs_inode::ni_lock. */ 336 enum ntfs_inode_mutex_lock_class { 337 NTFS_INODE_MUTEX_DIRTY, 338 NTFS_INODE_MUTEX_SECURITY, 339 NTFS_INODE_MUTEX_OBJID, 340 NTFS_INODE_MUTEX_REPARSE, 341 NTFS_INODE_MUTEX_NORMAL, 342 NTFS_INODE_MUTEX_PARENT, 343 NTFS_INODE_MUTEX_PARENT2, 344 }; 345 346 /* 347 * struct ntfs_inode 348 * 349 * Ntfs inode - extends linux inode. consists of one or more MFT inodes. 350 */ 351 struct ntfs_inode { 352 struct mft_inode mi; // base record 353 354 /* 355 * Valid size: [0 - i_valid) - these range in file contains valid data. 356 * Range [i_valid - inode->i_size) - contains 0. 357 * Usually i_valid <= inode->i_size. 358 */ 359 u64 i_valid; 360 struct timespec64 i_crtime; 361 362 struct mutex ni_lock; 363 364 /* File attributes from std. */ 365 enum FILE_ATTRIBUTE std_fa; 366 __le32 std_security_id; 367 368 /* 369 * Tree of mft_inode. 370 * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes 371 * e.g. file becomes too fragmented or contains a lot of names. 372 */ 373 struct rb_root mi_tree; 374 375 /* 376 * This member is used in ntfs_readdir to ensure that all subrecords are loaded 377 */ 378 u8 mi_loaded; 379 380 union { 381 struct ntfs_index dir; 382 struct { 383 struct rw_semaphore run_lock; 384 struct runs_tree run; 385 #ifdef CONFIG_NTFS3_LZX_XPRESS 386 struct folio *offs_folio; 387 #endif 388 } file; 389 }; 390 391 struct { 392 struct runs_tree run; 393 struct ATTR_LIST_ENTRY *le; // 1K aligned memory. 394 size_t size; 395 bool dirty; 396 } attr_list; 397 398 size_t ni_flags; // NI_FLAG_XXX 399 400 struct inode vfs_inode; 401 }; 402 403 struct indx_node { 404 struct ntfs_buffers nb; 405 struct INDEX_BUFFER *index; 406 }; 407 408 struct ntfs_fnd { 409 int level; 410 struct indx_node *nodes[20]; 411 struct NTFS_DE *de[20]; 412 struct NTFS_DE *root_de; 413 }; 414 415 enum REPARSE_SIGN { 416 REPARSE_NONE = 0, 417 REPARSE_COMPRESSED = 1, 418 REPARSE_DEDUPLICATED = 2, 419 REPARSE_LINK = 3 420 }; 421 422 /* Functions from attrib.c */ 423 int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, 424 CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, 425 enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, 426 CLST *new_lcn, CLST *new_len); 427 int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, 428 struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, 429 u64 new_size, struct runs_tree *run, 430 struct ATTRIB **ins_attr, struct page *page); 431 int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, 432 const __le16 *name, u8 name_len, struct runs_tree *run, 433 u64 new_size, const u64 *new_valid, bool keep_prealloc, 434 struct ATTRIB **ret); 435 int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, 436 CLST *len, bool *new, bool zero); 437 int attr_data_read_resident(struct ntfs_inode *ni, struct folio *folio); 438 int attr_data_write_resident(struct ntfs_inode *ni, struct folio *folio); 439 int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, 440 const __le16 *name, u8 name_len, struct runs_tree *run, 441 CLST vcn); 442 int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, 443 const __le16 *name, u8 name_len, struct runs_tree *run, 444 u64 from, u64 to); 445 int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, 446 struct runs_tree *run, u64 frame, u64 frames, 447 u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); 448 int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, 449 CLST frame, CLST *clst_data); 450 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, 451 u64 new_valid); 452 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 453 int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 454 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); 455 int attr_force_nonresident(struct ntfs_inode *ni); 456 457 /* Functions from attrlist.c */ 458 void al_destroy(struct ntfs_inode *ni); 459 bool al_verify(struct ntfs_inode *ni); 460 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); 461 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, 462 struct ATTR_LIST_ENTRY *le); 463 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, 464 struct ATTR_LIST_ENTRY *le, 465 const struct ATTRIB *attr); 466 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, 467 struct ATTR_LIST_ENTRY *le, 468 enum ATTR_TYPE type, const __le16 *name, 469 u8 name_len, const CLST *vcn); 470 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, 471 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, 472 struct ATTR_LIST_ENTRY **new_le); 473 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); 474 bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, 475 const __le16 *name, u8 name_len, const struct MFT_REF *ref); 476 int al_update(struct ntfs_inode *ni, int sync); 477 static inline size_t al_aligned(size_t size) 478 { 479 return size_add(size, 1023) & ~(size_t)1023; 480 } 481 482 /* Globals from bitfunc.c */ 483 bool are_bits_clear(const void *map, size_t bit, size_t nbits); 484 bool are_bits_set(const void *map, size_t bit, size_t nbits); 485 size_t get_set_bits_ex(const void *map, size_t bit, size_t nbits); 486 487 /* Globals from dir.c */ 488 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, 489 u8 *buf, int buf_len); 490 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 491 struct cpu_str *uni, u32 max_ulen, 492 enum utf16_endian endian); 493 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 494 struct ntfs_fnd *fnd); 495 bool dir_is_empty(struct inode *dir); 496 extern const struct file_operations ntfs_dir_operations; 497 extern const struct file_operations ntfs_legacy_dir_operations; 498 499 /* Globals from file.c */ 500 int ntfs_fileattr_get(struct dentry *dentry, struct fileattr *fa); 501 int ntfs_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry, 502 struct fileattr *fa); 503 int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, 504 struct kstat *stat, u32 request_mask, u32 flags); 505 int ntfs3_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 506 struct iattr *attr); 507 int ntfs_file_open(struct inode *inode, struct file *file); 508 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 509 __u64 start, __u64 len); 510 long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg); 511 long ntfs_compat_ioctl(struct file *filp, u32 cmd, unsigned long arg); 512 extern const struct inode_operations ntfs_special_inode_operations; 513 extern const struct inode_operations ntfs_file_inode_operations; 514 extern const struct file_operations ntfs_file_operations; 515 extern const struct file_operations ntfs_legacy_file_operations; 516 517 /* Globals from frecord.c */ 518 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 519 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 520 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 521 void ni_clear(struct ntfs_inode *ni); 522 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 523 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 524 struct mft_inode **mi); 525 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 526 struct ATTR_LIST_ENTRY **entry_o, 527 enum ATTR_TYPE type, const __le16 *name, 528 u8 name_len, const CLST *vcn, 529 struct mft_inode **mi); 530 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 531 struct ATTR_LIST_ENTRY **le, 532 struct mft_inode **mi); 533 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 534 const __le16 *name, u8 name_len, CLST vcn, 535 struct mft_inode **pmi); 536 int ni_load_all_mi(struct ntfs_inode *ni); 537 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 538 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 539 const __le16 *name, u8 name_len, bool base_only, 540 const __le16 *id); 541 int ni_create_attr_list(struct ntfs_inode *ni); 542 int ni_expand_list(struct ntfs_inode *ni); 543 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 544 const __le16 *name, u8 name_len, 545 const struct runs_tree *run, CLST svcn, CLST len, 546 __le16 flags, struct ATTRIB **new_attr, 547 struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); 548 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 549 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 550 struct ATTRIB **new_attr, struct mft_inode **mi, 551 struct ATTR_LIST_ENTRY **le); 552 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 553 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 554 int ni_delete_all(struct ntfs_inode *ni); 555 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 556 const struct le_str *uni, 557 const struct MFT_REF *home, 558 struct mft_inode **mi, 559 struct ATTR_LIST_ENTRY **entry); 560 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 561 struct mft_inode **mi, 562 struct ATTR_LIST_ENTRY **entry); 563 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 564 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 565 struct REPARSE_DATA_BUFFER *buffer); 566 int ni_write_inode(struct inode *inode, int sync, const char *hint); 567 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 568 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 569 __u64 vbo, __u64 len); 570 int ni_readpage_cmpr(struct ntfs_inode *ni, struct folio *folio); 571 int ni_decompress_file(struct ntfs_inode *ni); 572 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 573 u32 pages_per_frame); 574 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 575 u32 pages_per_frame); 576 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 577 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 578 579 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 580 struct NTFS_DE *de, struct NTFS_DE *de2, 581 int undo_step); 582 583 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 584 struct NTFS_DE *de); 585 586 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 587 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 588 bool *is_bad); 589 590 bool ni_is_dirty(struct inode *inode); 591 592 /* Globals from fslog.c */ 593 bool check_index_header(const struct INDEX_HDR *hdr, size_t bytes); 594 int log_replay(struct ntfs_inode *ni, bool *initialized); 595 596 /* Globals from fsntfs.c */ 597 struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block); 598 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 599 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 600 bool simple); 601 int ntfs_extend_init(struct ntfs_sb_info *sbi); 602 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 603 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 604 CLST *new_lcn, CLST *new_len, 605 enum ALLOCATE_OPT opt); 606 bool ntfs_check_for_free_space(struct ntfs_sb_info *sbi, CLST clen, CLST mlen); 607 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 608 struct ntfs_inode *ni, struct mft_inode **mi); 609 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); 610 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 611 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 612 void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 613 void ntfs_bad_inode(struct inode *inode, const char *hint); 614 #define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) 615 enum NTFS_DIRTY_FLAGS { 616 NTFS_DIRTY_CLEAR = 0, 617 NTFS_DIRTY_DIRTY = 1, 618 NTFS_DIRTY_ERROR = 2, 619 }; 620 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 621 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); 622 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 623 const void *buffer, int wait); 624 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 625 u64 vbo, const void *buf, size_t bytes, int sync); 626 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 627 const struct runs_tree *run, u64 vbo); 628 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 629 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 630 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 631 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 632 struct ntfs_buffers *nb); 633 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 634 u32 bytes, struct ntfs_buffers *nb); 635 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 636 struct ntfs_buffers *nb, int sync); 637 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, 638 struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, 639 enum req_op op); 640 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 641 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 642 u64 vbo, u64 *lbo, u64 *bytes); 643 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 644 enum RECORD_FLAG flag); 645 extern const u8 s_default_security[0x50]; 646 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 647 int ntfs_security_init(struct ntfs_sb_info *sbi); 648 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 649 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 650 size_t *size); 651 int ntfs_insert_security(struct ntfs_sb_info *sbi, 652 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 653 u32 size, __le32 *security_id, bool *inserted); 654 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 655 int ntfs_objid_init(struct ntfs_sb_info *sbi); 656 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 657 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 658 const struct MFT_REF *ref); 659 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 660 const struct MFT_REF *ref); 661 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 662 int run_deallocate(struct ntfs_sb_info *sbi, const struct runs_tree *run, 663 bool trim); 664 bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name); 665 int ntfs_set_label(struct ntfs_sb_info *sbi, u8 *label, int len); 666 667 /* Globals from index.c */ 668 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 669 void fnd_clear(struct ntfs_fnd *fnd); 670 static inline struct ntfs_fnd *fnd_get(void) 671 { 672 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 673 } 674 static inline void fnd_put(struct ntfs_fnd *fnd) 675 { 676 if (fnd) { 677 fnd_clear(fnd); 678 kfree(fnd); 679 } 680 } 681 void indx_clear(struct ntfs_index *idx); 682 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 683 const struct ATTRIB *attr, enum index_mutex_classed type); 684 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 685 struct ATTRIB **attr, struct mft_inode **mi); 686 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 687 struct indx_node **node); 688 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 689 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 690 const void *param, int *diff, struct NTFS_DE **entry, 691 struct ntfs_fnd *fnd); 692 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 693 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 694 struct ntfs_fnd *fnd); 695 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 696 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 697 size_t *off, struct ntfs_fnd *fnd); 698 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 699 const struct NTFS_DE *new_de, const void *param, 700 struct ntfs_fnd *fnd, bool undo); 701 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 702 const void *key, u32 key_len, const void *param); 703 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 704 const struct ATTR_FILE_NAME *fname, 705 const struct NTFS_DUP_INFO *dup, int sync); 706 707 /* Globals from inode.c */ 708 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 709 const struct cpu_str *name); 710 int ntfs_set_size(struct inode *inode, u64 new_size); 711 int reset_log_file(struct inode *inode); 712 int ntfs_get_block(struct inode *inode, sector_t vbn, 713 struct buffer_head *bh_result, int create); 714 int ntfs_write_begin(struct file *file, struct address_space *mapping, 715 loff_t pos, u32 len, struct page **pagep, void **fsdata); 716 int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos, 717 u32 len, u32 copied, struct page *page, void *fsdata); 718 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 719 int ntfs_sync_inode(struct inode *inode); 720 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, 721 struct inode *i2); 722 int inode_read_data(struct inode *inode, void *data, size_t bytes); 723 int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir, 724 struct dentry *dentry, const struct cpu_str *uni, 725 umode_t mode, dev_t dev, const char *symname, u32 size, 726 struct ntfs_fnd *fnd); 727 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 728 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 729 void ntfs_evict_inode(struct inode *inode); 730 extern const struct inode_operations ntfs_link_inode_operations; 731 extern const struct address_space_operations ntfs_aops; 732 extern const struct address_space_operations ntfs_aops_cmpr; 733 734 /* Globals from name_i.c */ 735 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 736 const struct cpu_str *uni); 737 struct dentry *ntfs3_get_parent(struct dentry *child); 738 739 extern const struct inode_operations ntfs_dir_inode_operations; 740 extern const struct inode_operations ntfs_special_inode_operations; 741 extern const struct dentry_operations ntfs_dentry_ops; 742 743 /* Globals from record.c */ 744 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 745 void mi_put(struct mft_inode *mi); 746 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 747 int mi_read(struct mft_inode *mi, bool is_mft); 748 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); 749 // TODO: id? 750 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, 751 enum ATTR_TYPE type, const __le16 *name, 752 u8 name_len, const __le16 *id); 753 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, 754 struct ATTR_LIST_ENTRY *le) 755 { 756 return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, 757 &le->id); 758 } 759 int mi_write(struct mft_inode *mi, int wait); 760 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 761 __le16 flags, bool is_mft); 762 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, 763 const __le16 *name, u8 name_len, u32 asize, 764 u16 name_off); 765 766 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 767 struct ATTRIB *attr); 768 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 769 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 770 struct runs_tree *run, CLST len); 771 static inline bool mi_is_ref(const struct mft_inode *mi, 772 const struct MFT_REF *ref) 773 { 774 if (le32_to_cpu(ref->low) != mi->rno) 775 return false; 776 if (ref->seq != mi->mrec->seq) 777 return false; 778 779 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 780 return le16_to_cpu(ref->high) == (mi->rno >> 32); 781 #else 782 return !ref->high; 783 #endif 784 } 785 786 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 787 { 788 ref->low = cpu_to_le32(mi->rno); 789 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 790 ref->high = cpu_to_le16(mi->rno >> 32); 791 #else 792 ref->high = 0; 793 #endif 794 ref->seq = mi->mrec->seq; 795 } 796 797 /* Globals from run.c */ 798 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 799 CLST *len, size_t *index); 800 void run_truncate(struct runs_tree *run, CLST vcn); 801 void run_truncate_head(struct runs_tree *run, CLST vcn); 802 void run_truncate_around(struct runs_tree *run, CLST vcn); 803 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 804 bool is_mft); 805 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); 806 bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); 807 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 808 CLST *lcn, CLST *len); 809 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 810 811 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 812 u32 run_buf_size, CLST *packed_vcns); 813 int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 814 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 815 int run_buf_size); 816 817 #ifdef NTFS3_CHECK_FREE_CLST 818 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 819 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 820 int run_buf_size); 821 #else 822 #define run_unpack_ex run_unpack 823 #endif 824 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 825 int run_clone(const struct runs_tree *run, struct runs_tree *new_run); 826 827 /* Globals from super.c */ 828 void *ntfs_set_shared(void *ptr, u32 bytes); 829 void *ntfs_put_shared(void *ptr); 830 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 831 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 832 833 /* Globals from bitmap.c*/ 834 int __init ntfs3_init_bitmap(void); 835 void ntfs3_exit_bitmap(void); 836 void wnd_close(struct wnd_bitmap *wnd); 837 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 838 { 839 return wnd->total_zeroes; 840 } 841 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 842 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 843 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 844 int wnd_set_used_safe(struct wnd_bitmap *wnd, size_t bit, size_t bits, 845 size_t *done); 846 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 847 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 848 849 /* Possible values for 'flags' 'wnd_find'. */ 850 #define BITMAP_FIND_MARK_AS_USED 0x01 851 #define BITMAP_FIND_FULL 0x02 852 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 853 size_t flags, size_t *allocated); 854 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 855 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 856 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 857 858 void ntfs_bitmap_set_le(void *map, unsigned int start, int len); 859 void ntfs_bitmap_clear_le(void *map, unsigned int start, int len); 860 unsigned int ntfs_bitmap_weight_le(const void *bitmap, int bits); 861 862 /* Globals from upcase.c */ 863 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 864 const u16 *upcase, bool bothcase); 865 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 866 const u16 *upcase, bool bothcase); 867 unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase, 868 unsigned long hash); 869 870 /* globals from xattr.c */ 871 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 872 struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, 873 int type); 874 int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, 875 struct posix_acl *acl, int type); 876 int ntfs_init_acl(struct mnt_idmap *idmap, struct inode *inode, 877 struct inode *dir); 878 #else 879 #define ntfs_get_acl NULL 880 #define ntfs_set_acl NULL 881 #endif 882 883 int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry); 884 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 885 extern const struct xattr_handler *const ntfs_xattr_handlers[]; 886 887 int ntfs_save_wsl_perm(struct inode *inode, __le16 *ea_size); 888 void ntfs_get_wsl_perm(struct inode *inode); 889 890 /* globals from lznt.c */ 891 struct lznt *get_lznt_ctx(int level); 892 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 893 void *compressed, size_t compressed_size, 894 struct lznt *ctx); 895 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 896 void *uncompressed, size_t uncompressed_size); 897 898 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 899 { 900 return sbi->volume.major_ver >= 3; 901 } 902 903 /* (sb->s_flags & SB_ACTIVE) */ 904 static inline bool is_mounted(struct ntfs_sb_info *sbi) 905 { 906 return !!sbi->sb->s_root; 907 } 908 909 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 910 { 911 return rno < MFT_REC_FREE || rno == sbi->objid_no || 912 rno == sbi->quota_no || rno == sbi->reparse_no || 913 rno == sbi->usn_jrnl_no; 914 } 915 916 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 917 { 918 return wnd->zone_bit; 919 } 920 921 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 922 { 923 return wnd->zone_end - wnd->zone_bit; 924 } 925 926 static inline void run_init(struct runs_tree *run) 927 { 928 run->runs = NULL; 929 run->count = 0; 930 run->allocated = 0; 931 } 932 933 static inline struct runs_tree *run_alloc(void) 934 { 935 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 936 } 937 938 static inline void run_close(struct runs_tree *run) 939 { 940 kvfree(run->runs); 941 memset(run, 0, sizeof(*run)); 942 } 943 944 static inline void run_free(struct runs_tree *run) 945 { 946 if (run) { 947 kvfree(run->runs); 948 kfree(run); 949 } 950 } 951 952 static inline bool run_is_empty(struct runs_tree *run) 953 { 954 return !run->count; 955 } 956 957 /* NTFS uses quad aligned bitmaps. */ 958 static inline size_t ntfs3_bitmap_size(size_t bits) 959 { 960 return BITS_TO_U64(bits) * sizeof(u64); 961 } 962 963 #define _100ns2seconds 10000000 964 #define SecondsToStartOf1970 0x00000002B6109100 965 966 #define NTFS_TIME_GRAN 100 967 968 /* 969 * kernel2nt - Converts in-memory kernel timestamp into nt time. 970 */ 971 static inline __le64 kernel2nt(const struct timespec64 *ts) 972 { 973 // 10^7 units of 100 nanoseconds one second 974 return cpu_to_le64(_100ns2seconds * 975 (ts->tv_sec + SecondsToStartOf1970) + 976 ts->tv_nsec / NTFS_TIME_GRAN); 977 } 978 979 /* 980 * nt2kernel - Converts on-disk nt time into kernel timestamp. 981 */ 982 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 983 { 984 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 985 986 // WARNING: do_div changes its first argument(!) 987 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 988 ts->tv_sec = t; 989 } 990 991 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 992 { 993 return sb->s_fs_info; 994 } 995 996 static inline int ntfs3_forced_shutdown(struct super_block *sb) 997 { 998 return test_bit(NTFS_FLAGS_SHUTDOWN_BIT, &ntfs_sb(sb)->flags); 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 ntfs_inode *ntfs_i(struct inode *inode) 1028 { 1029 return container_of(inode, struct ntfs_inode, vfs_inode); 1030 } 1031 1032 static inline bool is_compressed(const struct ntfs_inode *ni) 1033 { 1034 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1035 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1036 } 1037 1038 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1039 { 1040 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1041 } 1042 1043 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1044 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1045 { 1046 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1047 } 1048 1049 static inline bool is_dedup(const struct ntfs_inode *ni) 1050 { 1051 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1052 } 1053 1054 static inline bool is_encrypted(const struct ntfs_inode *ni) 1055 { 1056 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1057 } 1058 1059 static inline bool is_sparsed(const struct ntfs_inode *ni) 1060 { 1061 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1062 } 1063 1064 static inline int is_resident(struct ntfs_inode *ni) 1065 { 1066 return ni->ni_flags & NI_FLAG_RESIDENT; 1067 } 1068 1069 static inline void le16_sub_cpu(__le16 *var, u16 val) 1070 { 1071 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1072 } 1073 1074 static inline void le32_sub_cpu(__le32 *var, u32 val) 1075 { 1076 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1077 } 1078 1079 static inline void nb_put(struct ntfs_buffers *nb) 1080 { 1081 u32 i, nbufs = nb->nbufs; 1082 1083 if (!nbufs) 1084 return; 1085 1086 for (i = 0; i < nbufs; i++) 1087 put_bh(nb->bh[i]); 1088 nb->nbufs = 0; 1089 } 1090 1091 static inline void put_indx_node(struct indx_node *in) 1092 { 1093 if (!in) 1094 return; 1095 1096 kfree(in->index); 1097 nb_put(&in->nb); 1098 kfree(in); 1099 } 1100 1101 static inline void mi_clear(struct mft_inode *mi) 1102 { 1103 nb_put(&mi->nb); 1104 kfree(mi->mrec); 1105 mi->mrec = NULL; 1106 } 1107 1108 static inline void ni_lock(struct ntfs_inode *ni) 1109 { 1110 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1111 } 1112 1113 static inline void ni_lock_dir(struct ntfs_inode *ni) 1114 { 1115 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1116 } 1117 1118 static inline void ni_lock_dir2(struct ntfs_inode *ni) 1119 { 1120 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT2); 1121 } 1122 1123 static inline void ni_unlock(struct ntfs_inode *ni) 1124 { 1125 mutex_unlock(&ni->ni_lock); 1126 } 1127 1128 static inline int ni_trylock(struct ntfs_inode *ni) 1129 { 1130 return mutex_trylock(&ni->ni_lock); 1131 } 1132 1133 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1134 struct ATTRIB *attr, 1135 struct runs_tree *run, CLST vcn) 1136 { 1137 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1138 attr->name_len, run, vcn); 1139 } 1140 1141 static inline void le64_sub_cpu(__le64 *var, u64 val) 1142 { 1143 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1144 } 1145 1146 #if IS_ENABLED(CONFIG_NTFS_FS) 1147 bool is_legacy_ntfs(struct super_block *sb); 1148 #else 1149 static inline bool is_legacy_ntfs(struct super_block *sb) 1150 { 1151 return false; 1152 } 1153 #endif 1154 1155 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1156