1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * 4 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. 5 * 6 */ 7 8 // clang-format off 9 #ifndef _LINUX_NTFS3_NTFS_FS_H 10 #define _LINUX_NTFS3_NTFS_FS_H 11 12 #include <linux/blkdev.h> 13 #include <linux/buffer_head.h> 14 #include <linux/fs.h> 15 #include <linux/highmem.h> 16 #include <linux/kernel.h> 17 #include <linux/mm.h> 18 #include <linux/mutex.h> 19 #include <linux/page-flags.h> 20 #include <linux/pagemap.h> 21 #include <linux/rbtree.h> 22 #include <linux/rwsem.h> 23 #include <linux/slab.h> 24 #include <linux/string.h> 25 #include <linux/time64.h> 26 #include <linux/types.h> 27 #include <linux/uidgid.h> 28 #include <asm/div64.h> 29 #include <asm/page.h> 30 31 #include "debug.h" 32 #include "ntfs.h" 33 34 struct dentry; 35 struct fiemap_extent_info; 36 struct user_namespace; 37 struct page; 38 struct writeback_control; 39 enum utf16_endian; 40 41 42 #define MINUS_ONE_T ((size_t)(-1)) 43 /* Biggest MFT / smallest cluster */ 44 #define MAXIMUM_BYTES_PER_MFT 4096 45 #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) 46 47 #define MAXIMUM_BYTES_PER_INDEX 4096 48 #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) 49 50 /* NTFS specific error code when fixup failed. */ 51 #define E_NTFS_FIXUP 555 52 /* NTFS specific error code about resident->nonresident. */ 53 #define E_NTFS_NONRESIDENT 556 54 /* NTFS specific error code about punch hole. */ 55 #define E_NTFS_NOTALIGNED 557 56 57 58 /* sbi->flags */ 59 #define NTFS_FLAGS_NODISCARD 0x00000001 60 /* Set when LogFile is replaying. */ 61 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 62 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 63 #define NTFS_FLAGS_MFTMIRR 0x00001000 64 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 65 66 67 /* ni->ni_flags */ 68 /* 69 * Data attribute is external compressed (LZX/Xpress) 70 * 1 - WOF_COMPRESSION_XPRESS4K 71 * 2 - WOF_COMPRESSION_XPRESS8K 72 * 3 - WOF_COMPRESSION_XPRESS16K 73 * 4 - WOF_COMPRESSION_LZX32K 74 */ 75 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 76 /* Data attribute is deduplicated. */ 77 #define NI_FLAG_DEDUPLICATED 0x00000010 78 #define NI_FLAG_EA 0x00000020 79 #define NI_FLAG_DIR 0x00000040 80 #define NI_FLAG_RESIDENT 0x00000080 81 #define NI_FLAG_UPDATE_PARENT 0x00000100 82 // clang-format on 83 84 struct ntfs_mount_options { 85 char *nls_name; 86 struct nls_table *nls; 87 88 kuid_t fs_uid; 89 kgid_t fs_gid; 90 u16 fs_fmask_inv; 91 u16 fs_dmask_inv; 92 93 unsigned fmask : 1; /* fmask was set. */ 94 unsigned dmask : 1; /*dmask was set. */ 95 unsigned sys_immutable : 1; /* Immutable system files. */ 96 unsigned discard : 1; /* Issue discard requests on deletions. */ 97 unsigned sparse : 1; /* Create sparse files. */ 98 unsigned showmeta : 1; /* Show meta files. */ 99 unsigned nohidden : 1; /* Do not show hidden files. */ 100 unsigned hide_dot_files : 1; /* Set hidden flag on dot files. */ 101 unsigned windows_names : 1; /* Disallow names forbidden by Windows. */ 102 unsigned force : 1; /* RW mount dirty volume. */ 103 unsigned noacsrules : 1; /* Exclude acs rules. */ 104 unsigned prealloc : 1; /* Preallocate space when file is growing. */ 105 unsigned nocase : 1; /* case insensitive. */ 106 }; 107 108 /* Special value to unpack and deallocate. */ 109 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 110 111 /* TODO: Use rb tree instead of array. */ 112 struct runs_tree { 113 struct ntfs_run *runs; 114 size_t count; /* Currently used size a ntfs_run storage. */ 115 size_t allocated; /* Currently allocated ntfs_run storage size. */ 116 }; 117 118 struct ntfs_buffers { 119 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 120 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 121 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 122 u32 bytes; 123 u32 nbufs; 124 u32 off; 125 }; 126 127 enum ALLOCATE_OPT { 128 ALLOCATE_DEF = 0, // Allocate all clusters. 129 ALLOCATE_MFT = 1, // Allocate for MFT. 130 ALLOCATE_ZERO = 2, // Zeroout new allocated clusters 131 }; 132 133 enum bitmap_mutex_classes { 134 BITMAP_MUTEX_CLUSTERS = 0, 135 BITMAP_MUTEX_MFT = 1, 136 }; 137 138 struct wnd_bitmap { 139 struct super_block *sb; 140 struct rw_semaphore rw_lock; 141 142 struct runs_tree run; 143 size_t nbits; 144 145 size_t total_zeroes; // Total number of free bits. 146 u16 *free_bits; // Free bits in each window. 147 size_t nwnd; 148 u32 bits_last; // Bits in last window. 149 150 struct rb_root start_tree; // Extents, sorted by 'start'. 151 struct rb_root count_tree; // Extents, sorted by 'count + start'. 152 size_t count; // Extents count. 153 154 /* 155 * -1 Tree is activated but not updated (too many fragments). 156 * 0 - Tree is not activated. 157 * 1 - Tree is activated and updated. 158 */ 159 int uptodated; 160 size_t extent_min; // Minimal extent used while building. 161 size_t extent_max; // Upper estimate of biggest free block. 162 163 /* Zone [bit, end) */ 164 size_t zone_bit; 165 size_t zone_end; 166 167 bool set_tail; // Not necessary in driver. 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 * sturct 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, size_t name_len, 471 const struct MFT_REF *ref); 472 int al_update(struct ntfs_inode *ni, int sync); 473 static inline size_t al_aligned(size_t size) 474 { 475 return (size + 1023) & ~(size_t)1023; 476 } 477 478 /* Globals from bitfunc.c */ 479 bool are_bits_clear(const void *map, size_t bit, size_t nbits); 480 bool are_bits_set(const void *map, size_t bit, size_t nbits); 481 size_t get_set_bits_ex(const void *map, size_t bit, size_t nbits); 482 483 /* Globals from dir.c */ 484 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, 485 u8 *buf, int buf_len); 486 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 487 struct cpu_str *uni, u32 max_ulen, 488 enum utf16_endian endian); 489 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 490 struct ntfs_fnd *fnd); 491 bool dir_is_empty(struct inode *dir); 492 extern const struct file_operations ntfs_dir_operations; 493 494 /* Globals from file.c */ 495 int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, 496 struct kstat *stat, u32 request_mask, u32 flags); 497 int ntfs3_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 498 struct iattr *attr); 499 void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, 500 CLST len); 501 int ntfs_file_open(struct inode *inode, struct file *file); 502 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 503 __u64 start, __u64 len); 504 extern const struct inode_operations ntfs_special_inode_operations; 505 extern const struct inode_operations ntfs_file_inode_operations; 506 extern const struct file_operations ntfs_file_operations; 507 508 /* Globals from frecord.c */ 509 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 510 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 511 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 512 void ni_clear(struct ntfs_inode *ni); 513 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 514 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 515 struct mft_inode **mi); 516 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 517 struct ATTR_LIST_ENTRY **entry_o, 518 enum ATTR_TYPE type, const __le16 *name, 519 u8 name_len, const CLST *vcn, 520 struct mft_inode **mi); 521 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 522 struct ATTR_LIST_ENTRY **le, 523 struct mft_inode **mi); 524 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 525 const __le16 *name, u8 name_len, CLST vcn, 526 struct mft_inode **pmi); 527 int ni_load_all_mi(struct ntfs_inode *ni); 528 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 529 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 530 const __le16 *name, size_t name_len, bool base_only, 531 const __le16 *id); 532 int ni_create_attr_list(struct ntfs_inode *ni); 533 int ni_expand_list(struct ntfs_inode *ni); 534 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 535 const __le16 *name, u8 name_len, 536 const struct runs_tree *run, CLST svcn, CLST len, 537 __le16 flags, struct ATTRIB **new_attr, 538 struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); 539 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 540 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 541 struct ATTRIB **new_attr, struct mft_inode **mi, 542 struct ATTR_LIST_ENTRY **le); 543 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 544 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 545 int ni_delete_all(struct ntfs_inode *ni); 546 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 547 const struct cpu_str *uni, 548 const struct MFT_REF *home, 549 struct mft_inode **mi, 550 struct ATTR_LIST_ENTRY **entry); 551 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 552 struct mft_inode **mi, 553 struct ATTR_LIST_ENTRY **entry); 554 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 555 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 556 struct REPARSE_DATA_BUFFER *buffer); 557 int ni_write_inode(struct inode *inode, int sync, const char *hint); 558 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 559 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 560 __u64 vbo, __u64 len); 561 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); 562 int ni_decompress_file(struct ntfs_inode *ni); 563 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 564 u32 pages_per_frame); 565 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 566 u32 pages_per_frame); 567 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 568 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 569 570 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 571 struct NTFS_DE *de, struct NTFS_DE *de2, 572 int undo_step); 573 574 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 575 struct NTFS_DE *de); 576 577 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 578 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 579 bool *is_bad); 580 581 bool ni_is_dirty(struct inode *inode); 582 583 /* Globals from fslog.c */ 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 bool dir); 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, struct runs_tree *run, bool trim); 652 bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name); 653 654 /* Globals from index.c */ 655 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 656 void fnd_clear(struct ntfs_fnd *fnd); 657 static inline struct ntfs_fnd *fnd_get(void) 658 { 659 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 660 } 661 static inline void fnd_put(struct ntfs_fnd *fnd) 662 { 663 if (fnd) { 664 fnd_clear(fnd); 665 kfree(fnd); 666 } 667 } 668 void indx_clear(struct ntfs_index *idx); 669 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 670 const struct ATTRIB *attr, enum index_mutex_classed type); 671 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 672 struct ATTRIB **attr, struct mft_inode **mi); 673 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 674 struct indx_node **node); 675 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 676 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 677 const void *param, int *diff, struct NTFS_DE **entry, 678 struct ntfs_fnd *fnd); 679 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 680 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 681 struct ntfs_fnd *fnd); 682 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 683 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 684 size_t *off, struct ntfs_fnd *fnd); 685 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 686 const struct NTFS_DE *new_de, const void *param, 687 struct ntfs_fnd *fnd, bool undo); 688 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 689 const void *key, u32 key_len, const void *param); 690 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 691 const struct ATTR_FILE_NAME *fname, 692 const struct NTFS_DUP_INFO *dup, int sync); 693 694 /* Globals from inode.c */ 695 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 696 const struct cpu_str *name); 697 int ntfs_set_size(struct inode *inode, u64 new_size); 698 int reset_log_file(struct inode *inode); 699 int ntfs_get_block(struct inode *inode, sector_t vbn, 700 struct buffer_head *bh_result, int create); 701 int ntfs_write_begin(struct file *file, struct address_space *mapping, 702 loff_t pos, u32 len, struct page **pagep, void **fsdata); 703 int ntfs_write_end(struct file *file, struct address_space *mapping, 704 loff_t pos, u32 len, u32 copied, struct page *page, 705 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, 712 struct inode *dir, 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 size_t 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 inode *inode, int type, bool rcu); 862 int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, 863 struct posix_acl *acl, int type); 864 int ntfs_init_acl(struct mnt_idmap *idmap, struct inode *inode, 865 struct inode *dir); 866 #else 867 #define ntfs_get_acl NULL 868 #define ntfs_set_acl NULL 869 #endif 870 871 int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry); 872 int ntfs_permission(struct mnt_idmap *idmap, struct inode *inode, 873 int mask); 874 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 875 extern const struct xattr_handler *ntfs_xattr_handlers[]; 876 877 int ntfs_save_wsl_perm(struct inode *inode); 878 void ntfs_get_wsl_perm(struct inode *inode); 879 880 /* globals from lznt.c */ 881 struct lznt *get_lznt_ctx(int level); 882 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 883 void *compressed, size_t compressed_size, 884 struct lznt *ctx); 885 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 886 void *uncompressed, size_t uncompressed_size); 887 888 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 889 { 890 return sbi->volume.major_ver >= 3; 891 } 892 893 /* (sb->s_flags & SB_ACTIVE) */ 894 static inline bool is_mounted(struct ntfs_sb_info *sbi) 895 { 896 return !!sbi->sb->s_root; 897 } 898 899 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 900 { 901 return rno < MFT_REC_FREE || rno == sbi->objid_no || 902 rno == sbi->quota_no || rno == sbi->reparse_no || 903 rno == sbi->usn_jrnl_no; 904 } 905 906 static inline void ntfs_unmap_page(struct page *page) 907 { 908 kunmap(page); 909 put_page(page); 910 } 911 912 static inline struct page *ntfs_map_page(struct address_space *mapping, 913 unsigned long index) 914 { 915 struct page *page = read_mapping_page(mapping, index, NULL); 916 917 if (!IS_ERR(page)) 918 kmap(page); 919 return page; 920 } 921 922 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 923 { 924 return wnd->zone_bit; 925 } 926 927 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 928 { 929 return wnd->zone_end - wnd->zone_bit; 930 } 931 932 static inline void run_init(struct runs_tree *run) 933 { 934 run->runs = NULL; 935 run->count = 0; 936 run->allocated = 0; 937 } 938 939 static inline struct runs_tree *run_alloc(void) 940 { 941 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 942 } 943 944 static inline void run_close(struct runs_tree *run) 945 { 946 kvfree(run->runs); 947 memset(run, 0, sizeof(*run)); 948 } 949 950 static inline void run_free(struct runs_tree *run) 951 { 952 if (run) { 953 kvfree(run->runs); 954 kfree(run); 955 } 956 } 957 958 static inline bool run_is_empty(struct runs_tree *run) 959 { 960 return !run->count; 961 } 962 963 /* NTFS uses quad aligned bitmaps. */ 964 static inline size_t bitmap_size(size_t bits) 965 { 966 return ALIGN((bits + 7) >> 3, 8); 967 } 968 969 #define _100ns2seconds 10000000 970 #define SecondsToStartOf1970 0x00000002B6109100 971 972 #define NTFS_TIME_GRAN 100 973 974 /* 975 * kernel2nt - Converts in-memory kernel timestamp into nt time. 976 */ 977 static inline __le64 kernel2nt(const struct timespec64 *ts) 978 { 979 // 10^7 units of 100 nanoseconds one second 980 return cpu_to_le64(_100ns2seconds * 981 (ts->tv_sec + SecondsToStartOf1970) + 982 ts->tv_nsec / NTFS_TIME_GRAN); 983 } 984 985 /* 986 * nt2kernel - Converts on-disk nt time into kernel timestamp. 987 */ 988 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 989 { 990 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 991 992 // WARNING: do_div changes its first argument(!) 993 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 994 ts->tv_sec = t; 995 } 996 997 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 998 { 999 return sb->s_fs_info; 1000 } 1001 1002 /* 1003 * ntfs_up_cluster - Align up on cluster boundary. 1004 */ 1005 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 1006 { 1007 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 1008 } 1009 1010 /* 1011 * ntfs_up_block - Align up on cluster boundary. 1012 */ 1013 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 1014 { 1015 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 1016 } 1017 1018 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 1019 { 1020 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 1021 } 1022 1023 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 1024 { 1025 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 1026 } 1027 1028 static inline struct buffer_head *ntfs_bread(struct super_block *sb, 1029 sector_t block) 1030 { 1031 struct buffer_head *bh = sb_bread(sb, block); 1032 1033 if (bh) 1034 return bh; 1035 1036 ntfs_err(sb, "failed to read volume at offset 0x%llx", 1037 (u64)block << sb->s_blocksize_bits); 1038 return NULL; 1039 } 1040 1041 static inline struct ntfs_inode *ntfs_i(struct inode *inode) 1042 { 1043 return container_of(inode, struct ntfs_inode, vfs_inode); 1044 } 1045 1046 static inline bool is_compressed(const struct ntfs_inode *ni) 1047 { 1048 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1049 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1050 } 1051 1052 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1053 { 1054 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1055 } 1056 1057 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1058 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1059 { 1060 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1061 } 1062 1063 static inline bool is_dedup(const struct ntfs_inode *ni) 1064 { 1065 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1066 } 1067 1068 static inline bool is_encrypted(const struct ntfs_inode *ni) 1069 { 1070 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1071 } 1072 1073 static inline bool is_sparsed(const struct ntfs_inode *ni) 1074 { 1075 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1076 } 1077 1078 static inline int is_resident(struct ntfs_inode *ni) 1079 { 1080 return ni->ni_flags & NI_FLAG_RESIDENT; 1081 } 1082 1083 static inline void le16_sub_cpu(__le16 *var, u16 val) 1084 { 1085 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1086 } 1087 1088 static inline void le32_sub_cpu(__le32 *var, u32 val) 1089 { 1090 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1091 } 1092 1093 static inline void nb_put(struct ntfs_buffers *nb) 1094 { 1095 u32 i, nbufs = nb->nbufs; 1096 1097 if (!nbufs) 1098 return; 1099 1100 for (i = 0; i < nbufs; i++) 1101 put_bh(nb->bh[i]); 1102 nb->nbufs = 0; 1103 } 1104 1105 static inline void put_indx_node(struct indx_node *in) 1106 { 1107 if (!in) 1108 return; 1109 1110 kfree(in->index); 1111 nb_put(&in->nb); 1112 kfree(in); 1113 } 1114 1115 static inline void mi_clear(struct mft_inode *mi) 1116 { 1117 nb_put(&mi->nb); 1118 kfree(mi->mrec); 1119 mi->mrec = NULL; 1120 } 1121 1122 static inline void ni_lock(struct ntfs_inode *ni) 1123 { 1124 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1125 } 1126 1127 static inline void ni_lock_dir(struct ntfs_inode *ni) 1128 { 1129 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1130 } 1131 1132 static inline void ni_lock_dir2(struct ntfs_inode *ni) 1133 { 1134 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT2); 1135 } 1136 1137 static inline void ni_unlock(struct ntfs_inode *ni) 1138 { 1139 mutex_unlock(&ni->ni_lock); 1140 } 1141 1142 static inline int ni_trylock(struct ntfs_inode *ni) 1143 { 1144 return mutex_trylock(&ni->ni_lock); 1145 } 1146 1147 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1148 struct ATTRIB *attr, 1149 struct runs_tree *run, CLST vcn) 1150 { 1151 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1152 attr->name_len, run, vcn); 1153 } 1154 1155 static inline void le64_sub_cpu(__le64 *var, u64 val) 1156 { 1157 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1158 } 1159 1160 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1161