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