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 user_namespace *mnt_userns, const struct path *path, 496 struct kstat *stat, u32 request_mask, u32 flags); 497 int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 498 struct iattr *attr); 499 int ntfs_file_open(struct inode *inode, struct file *file); 500 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 501 __u64 start, __u64 len); 502 extern const struct inode_operations ntfs_special_inode_operations; 503 extern const struct inode_operations ntfs_file_inode_operations; 504 extern const struct file_operations ntfs_file_operations; 505 506 /* Globals from frecord.c */ 507 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 508 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 509 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 510 void ni_clear(struct ntfs_inode *ni); 511 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 512 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 513 struct mft_inode **mi); 514 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 515 struct ATTR_LIST_ENTRY **entry_o, 516 enum ATTR_TYPE type, const __le16 *name, 517 u8 name_len, const CLST *vcn, 518 struct mft_inode **mi); 519 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 520 struct ATTR_LIST_ENTRY **le, 521 struct mft_inode **mi); 522 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 523 const __le16 *name, u8 name_len, CLST vcn, 524 struct mft_inode **pmi); 525 int ni_load_all_mi(struct ntfs_inode *ni); 526 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 527 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 528 const __le16 *name, size_t name_len, bool base_only, 529 const __le16 *id); 530 int ni_create_attr_list(struct ntfs_inode *ni); 531 int ni_expand_list(struct ntfs_inode *ni); 532 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 533 const __le16 *name, u8 name_len, 534 const struct runs_tree *run, CLST svcn, CLST len, 535 __le16 flags, struct ATTRIB **new_attr, 536 struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); 537 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 538 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 539 struct ATTRIB **new_attr, struct mft_inode **mi, 540 struct ATTR_LIST_ENTRY **le); 541 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 542 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 543 int ni_delete_all(struct ntfs_inode *ni); 544 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 545 const struct cpu_str *uni, 546 const struct MFT_REF *home, 547 struct mft_inode **mi, 548 struct ATTR_LIST_ENTRY **entry); 549 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 550 struct mft_inode **mi, 551 struct ATTR_LIST_ENTRY **entry); 552 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 553 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 554 struct REPARSE_DATA_BUFFER *buffer); 555 int ni_write_inode(struct inode *inode, int sync, const char *hint); 556 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 557 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 558 __u64 vbo, __u64 len); 559 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); 560 int ni_decompress_file(struct ntfs_inode *ni); 561 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 562 u32 pages_per_frame); 563 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 564 u32 pages_per_frame); 565 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 566 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 567 568 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 569 struct NTFS_DE *de, struct NTFS_DE *de2, 570 int undo_step); 571 572 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 573 struct NTFS_DE *de); 574 575 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 576 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 577 bool *is_bad); 578 579 bool ni_is_dirty(struct inode *inode); 580 581 /* Globals from fslog.c */ 582 int log_replay(struct ntfs_inode *ni, bool *initialized); 583 584 /* Globals from fsntfs.c */ 585 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 586 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 587 bool simple); 588 int ntfs_extend_init(struct ntfs_sb_info *sbi); 589 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 590 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 591 CLST *new_lcn, CLST *new_len, 592 enum ALLOCATE_OPT opt); 593 bool ntfs_check_for_free_space(struct ntfs_sb_info *sbi, CLST clen, CLST mlen); 594 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 595 struct ntfs_inode *ni, struct mft_inode **mi); 596 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); 597 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 598 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 599 void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 600 void ntfs_bad_inode(struct inode *inode, const char *hint); 601 #define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) 602 enum NTFS_DIRTY_FLAGS { 603 NTFS_DIRTY_CLEAR = 0, 604 NTFS_DIRTY_DIRTY = 1, 605 NTFS_DIRTY_ERROR = 2, 606 }; 607 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 608 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); 609 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 610 const void *buffer, int wait); 611 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 612 u64 vbo, const void *buf, size_t bytes, int sync); 613 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 614 const struct runs_tree *run, u64 vbo); 615 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 616 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 617 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 618 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 619 struct ntfs_buffers *nb); 620 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 621 u32 bytes, struct ntfs_buffers *nb); 622 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 623 struct ntfs_buffers *nb, int sync); 624 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, 625 struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, 626 enum req_op op); 627 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 628 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 629 u64 vbo, u64 *lbo, u64 *bytes); 630 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 631 bool dir); 632 extern const u8 s_default_security[0x50]; 633 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 634 int ntfs_security_init(struct ntfs_sb_info *sbi); 635 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 636 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 637 size_t *size); 638 int ntfs_insert_security(struct ntfs_sb_info *sbi, 639 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 640 u32 size, __le32 *security_id, bool *inserted); 641 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 642 int ntfs_objid_init(struct ntfs_sb_info *sbi); 643 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 644 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 645 const struct MFT_REF *ref); 646 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 647 const struct MFT_REF *ref); 648 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 649 int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim); 650 bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name); 651 652 /* Globals from index.c */ 653 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 654 void fnd_clear(struct ntfs_fnd *fnd); 655 static inline struct ntfs_fnd *fnd_get(void) 656 { 657 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 658 } 659 static inline void fnd_put(struct ntfs_fnd *fnd) 660 { 661 if (fnd) { 662 fnd_clear(fnd); 663 kfree(fnd); 664 } 665 } 666 void indx_clear(struct ntfs_index *idx); 667 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 668 const struct ATTRIB *attr, enum index_mutex_classed type); 669 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 670 struct ATTRIB **attr, struct mft_inode **mi); 671 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 672 struct indx_node **node); 673 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 674 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 675 const void *param, int *diff, struct NTFS_DE **entry, 676 struct ntfs_fnd *fnd); 677 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 678 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 679 struct ntfs_fnd *fnd); 680 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 681 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 682 size_t *off, struct ntfs_fnd *fnd); 683 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 684 const struct NTFS_DE *new_de, const void *param, 685 struct ntfs_fnd *fnd, bool undo); 686 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 687 const void *key, u32 key_len, const void *param); 688 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 689 const struct ATTR_FILE_NAME *fname, 690 const struct NTFS_DUP_INFO *dup, int sync); 691 692 /* Globals from inode.c */ 693 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 694 const struct cpu_str *name); 695 int ntfs_set_size(struct inode *inode, u64 new_size); 696 int reset_log_file(struct inode *inode); 697 int ntfs_get_block(struct inode *inode, sector_t vbn, 698 struct buffer_head *bh_result, int create); 699 int ntfs_write_begin(struct file *file, struct address_space *mapping, 700 loff_t pos, u32 len, struct page **pagep, void **fsdata); 701 int ntfs_write_end(struct file *file, struct address_space *mapping, 702 loff_t pos, u32 len, u32 copied, struct page *page, 703 void *fsdata); 704 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 705 int ntfs_sync_inode(struct inode *inode); 706 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, 707 struct inode *i2); 708 int inode_write_data(struct inode *inode, const void *data, size_t bytes); 709 struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, 710 struct inode *dir, struct dentry *dentry, 711 const struct cpu_str *uni, umode_t mode, 712 dev_t dev, const char *symname, u32 size, 713 struct ntfs_fnd *fnd); 714 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 715 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 716 void ntfs_evict_inode(struct inode *inode); 717 extern const struct inode_operations ntfs_link_inode_operations; 718 extern const struct address_space_operations ntfs_aops; 719 extern const struct address_space_operations ntfs_aops_cmpr; 720 721 /* Globals from name_i.c */ 722 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 723 const struct cpu_str *uni); 724 struct dentry *ntfs3_get_parent(struct dentry *child); 725 726 extern const struct inode_operations ntfs_dir_inode_operations; 727 extern const struct inode_operations ntfs_special_inode_operations; 728 extern const struct dentry_operations ntfs_dentry_ops; 729 730 /* Globals from record.c */ 731 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 732 void mi_put(struct mft_inode *mi); 733 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 734 int mi_read(struct mft_inode *mi, bool is_mft); 735 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); 736 // TODO: id? 737 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, 738 enum ATTR_TYPE type, const __le16 *name, 739 size_t name_len, const __le16 *id); 740 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, 741 struct ATTR_LIST_ENTRY *le) 742 { 743 return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, 744 &le->id); 745 } 746 int mi_write(struct mft_inode *mi, int wait); 747 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 748 __le16 flags, bool is_mft); 749 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, 750 const __le16 *name, u8 name_len, u32 asize, 751 u16 name_off); 752 753 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 754 struct ATTRIB *attr); 755 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 756 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 757 struct runs_tree *run, CLST len); 758 static inline bool mi_is_ref(const struct mft_inode *mi, 759 const struct MFT_REF *ref) 760 { 761 if (le32_to_cpu(ref->low) != mi->rno) 762 return false; 763 if (ref->seq != mi->mrec->seq) 764 return false; 765 766 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 767 return le16_to_cpu(ref->high) == (mi->rno >> 32); 768 #else 769 return !ref->high; 770 #endif 771 } 772 773 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 774 { 775 ref->low = cpu_to_le32(mi->rno); 776 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 777 ref->high = cpu_to_le16(mi->rno >> 32); 778 #else 779 ref->high = 0; 780 #endif 781 ref->seq = mi->mrec->seq; 782 } 783 784 /* Globals from run.c */ 785 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 786 CLST *len, size_t *index); 787 void run_truncate(struct runs_tree *run, CLST vcn); 788 void run_truncate_head(struct runs_tree *run, CLST vcn); 789 void run_truncate_around(struct runs_tree *run, CLST vcn); 790 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 791 bool is_mft); 792 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); 793 bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); 794 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 795 CLST *lcn, CLST *len); 796 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 797 798 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 799 u32 run_buf_size, CLST *packed_vcns); 800 int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 801 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 802 int run_buf_size); 803 804 #ifdef NTFS3_CHECK_FREE_CLST 805 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 806 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 807 int run_buf_size); 808 #else 809 #define run_unpack_ex run_unpack 810 #endif 811 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 812 int run_clone(const struct runs_tree *run, struct runs_tree *new_run); 813 814 /* Globals from super.c */ 815 void *ntfs_set_shared(void *ptr, u32 bytes); 816 void *ntfs_put_shared(void *ptr); 817 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 818 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 819 820 /* Globals from bitmap.c*/ 821 int __init ntfs3_init_bitmap(void); 822 void ntfs3_exit_bitmap(void); 823 void wnd_close(struct wnd_bitmap *wnd); 824 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 825 { 826 return wnd->total_zeroes; 827 } 828 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 829 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 830 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 831 int wnd_set_used_safe(struct wnd_bitmap *wnd, size_t bit, size_t bits, 832 size_t *done); 833 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 834 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 835 836 /* Possible values for 'flags' 'wnd_find'. */ 837 #define BITMAP_FIND_MARK_AS_USED 0x01 838 #define BITMAP_FIND_FULL 0x02 839 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 840 size_t flags, size_t *allocated); 841 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 842 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 843 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 844 845 void ntfs_bitmap_set_le(void *map, unsigned int start, int len); 846 void ntfs_bitmap_clear_le(void *map, unsigned int start, int len); 847 unsigned int ntfs_bitmap_weight_le(const void *bitmap, int bits); 848 849 /* Globals from upcase.c */ 850 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 851 const u16 *upcase, bool bothcase); 852 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 853 const u16 *upcase, bool bothcase); 854 unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase, 855 unsigned long hash); 856 857 /* globals from xattr.c */ 858 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 859 struct posix_acl *ntfs_get_acl(struct inode *inode, int type, bool rcu); 860 int ntfs_set_acl(struct user_namespace *mnt_userns, struct dentry *dentry, 861 struct posix_acl *acl, int type); 862 int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, 863 struct inode *dir); 864 #else 865 #define ntfs_get_acl NULL 866 #define ntfs_set_acl NULL 867 #endif 868 869 int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct dentry *dentry); 870 int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode, 871 int mask); 872 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 873 extern const struct xattr_handler *ntfs_xattr_handlers[]; 874 875 int ntfs_save_wsl_perm(struct inode *inode); 876 void ntfs_get_wsl_perm(struct inode *inode); 877 878 /* globals from lznt.c */ 879 struct lznt *get_lznt_ctx(int level); 880 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 881 void *compressed, size_t compressed_size, 882 struct lznt *ctx); 883 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 884 void *uncompressed, size_t uncompressed_size); 885 886 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 887 { 888 return sbi->volume.major_ver >= 3; 889 } 890 891 /* (sb->s_flags & SB_ACTIVE) */ 892 static inline bool is_mounted(struct ntfs_sb_info *sbi) 893 { 894 return !!sbi->sb->s_root; 895 } 896 897 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 898 { 899 return rno < MFT_REC_FREE || rno == sbi->objid_no || 900 rno == sbi->quota_no || rno == sbi->reparse_no || 901 rno == sbi->usn_jrnl_no; 902 } 903 904 static inline void ntfs_unmap_page(struct page *page) 905 { 906 kunmap(page); 907 put_page(page); 908 } 909 910 static inline struct page *ntfs_map_page(struct address_space *mapping, 911 unsigned long index) 912 { 913 struct page *page = read_mapping_page(mapping, index, NULL); 914 915 if (!IS_ERR(page)) 916 kmap(page); 917 return page; 918 } 919 920 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 921 { 922 return wnd->zone_bit; 923 } 924 925 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 926 { 927 return wnd->zone_end - wnd->zone_bit; 928 } 929 930 static inline void run_init(struct runs_tree *run) 931 { 932 run->runs = NULL; 933 run->count = 0; 934 run->allocated = 0; 935 } 936 937 static inline struct runs_tree *run_alloc(void) 938 { 939 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 940 } 941 942 static inline void run_close(struct runs_tree *run) 943 { 944 kvfree(run->runs); 945 memset(run, 0, sizeof(*run)); 946 } 947 948 static inline void run_free(struct runs_tree *run) 949 { 950 if (run) { 951 kvfree(run->runs); 952 kfree(run); 953 } 954 } 955 956 static inline bool run_is_empty(struct runs_tree *run) 957 { 958 return !run->count; 959 } 960 961 /* NTFS uses quad aligned bitmaps. */ 962 static inline size_t bitmap_size(size_t bits) 963 { 964 return ALIGN((bits + 7) >> 3, 8); 965 } 966 967 #define _100ns2seconds 10000000 968 #define SecondsToStartOf1970 0x00000002B6109100 969 970 #define NTFS_TIME_GRAN 100 971 972 /* 973 * kernel2nt - Converts in-memory kernel timestamp into nt time. 974 */ 975 static inline __le64 kernel2nt(const struct timespec64 *ts) 976 { 977 // 10^7 units of 100 nanoseconds one second 978 return cpu_to_le64(_100ns2seconds * 979 (ts->tv_sec + SecondsToStartOf1970) + 980 ts->tv_nsec / NTFS_TIME_GRAN); 981 } 982 983 /* 984 * nt2kernel - Converts on-disk nt time into kernel timestamp. 985 */ 986 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 987 { 988 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 989 990 // WARNING: do_div changes its first argument(!) 991 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 992 ts->tv_sec = t; 993 } 994 995 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 996 { 997 return sb->s_fs_info; 998 } 999 1000 /* 1001 * ntfs_up_cluster - Align up on cluster boundary. 1002 */ 1003 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 1004 { 1005 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 1006 } 1007 1008 /* 1009 * ntfs_up_block - Align up on cluster boundary. 1010 */ 1011 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 1012 { 1013 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 1014 } 1015 1016 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 1017 { 1018 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 1019 } 1020 1021 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 1022 { 1023 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 1024 } 1025 1026 static inline struct buffer_head *ntfs_bread(struct super_block *sb, 1027 sector_t block) 1028 { 1029 struct buffer_head *bh = sb_bread(sb, block); 1030 1031 if (bh) 1032 return bh; 1033 1034 ntfs_err(sb, "failed to read volume at offset 0x%llx", 1035 (u64)block << sb->s_blocksize_bits); 1036 return NULL; 1037 } 1038 1039 static inline struct ntfs_inode *ntfs_i(struct inode *inode) 1040 { 1041 return container_of(inode, struct ntfs_inode, vfs_inode); 1042 } 1043 1044 static inline bool is_compressed(const struct ntfs_inode *ni) 1045 { 1046 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1047 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1048 } 1049 1050 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1051 { 1052 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1053 } 1054 1055 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1056 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1057 { 1058 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1059 } 1060 1061 static inline bool is_dedup(const struct ntfs_inode *ni) 1062 { 1063 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1064 } 1065 1066 static inline bool is_encrypted(const struct ntfs_inode *ni) 1067 { 1068 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1069 } 1070 1071 static inline bool is_sparsed(const struct ntfs_inode *ni) 1072 { 1073 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1074 } 1075 1076 static inline int is_resident(struct ntfs_inode *ni) 1077 { 1078 return ni->ni_flags & NI_FLAG_RESIDENT; 1079 } 1080 1081 static inline void le16_sub_cpu(__le16 *var, u16 val) 1082 { 1083 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1084 } 1085 1086 static inline void le32_sub_cpu(__le32 *var, u32 val) 1087 { 1088 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1089 } 1090 1091 static inline void nb_put(struct ntfs_buffers *nb) 1092 { 1093 u32 i, nbufs = nb->nbufs; 1094 1095 if (!nbufs) 1096 return; 1097 1098 for (i = 0; i < nbufs; i++) 1099 put_bh(nb->bh[i]); 1100 nb->nbufs = 0; 1101 } 1102 1103 static inline void put_indx_node(struct indx_node *in) 1104 { 1105 if (!in) 1106 return; 1107 1108 kfree(in->index); 1109 nb_put(&in->nb); 1110 kfree(in); 1111 } 1112 1113 static inline void mi_clear(struct mft_inode *mi) 1114 { 1115 nb_put(&mi->nb); 1116 kfree(mi->mrec); 1117 mi->mrec = NULL; 1118 } 1119 1120 static inline void ni_lock(struct ntfs_inode *ni) 1121 { 1122 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1123 } 1124 1125 static inline void ni_lock_dir(struct ntfs_inode *ni) 1126 { 1127 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1128 } 1129 1130 static inline void ni_lock_dir2(struct ntfs_inode *ni) 1131 { 1132 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT2); 1133 } 1134 1135 static inline void ni_unlock(struct ntfs_inode *ni) 1136 { 1137 mutex_unlock(&ni->ni_lock); 1138 } 1139 1140 static inline int ni_trylock(struct ntfs_inode *ni) 1141 { 1142 return mutex_trylock(&ni->ni_lock); 1143 } 1144 1145 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1146 struct ATTRIB *attr, 1147 struct runs_tree *run, CLST vcn) 1148 { 1149 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1150 attr->name_len, run, vcn); 1151 } 1152 1153 static inline void le64_sub_cpu(__le64 *var, u64 val) 1154 { 1155 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1156 } 1157 1158 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1159