1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * 4 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. 5 * 6 */ 7 8 // clang-format off 9 #ifndef _LINUX_NTFS3_NTFS_FS_H 10 #define _LINUX_NTFS3_NTFS_FS_H 11 12 #include <linux/blkdev.h> 13 #include <linux/buffer_head.h> 14 #include <linux/fs.h> 15 #include <linux/highmem.h> 16 #include <linux/kernel.h> 17 #include <linux/mm.h> 18 #include <linux/mutex.h> 19 #include <linux/page-flags.h> 20 #include <linux/pagemap.h> 21 #include <linux/rbtree.h> 22 #include <linux/rwsem.h> 23 #include <linux/slab.h> 24 #include <linux/string.h> 25 #include <linux/time64.h> 26 #include <linux/types.h> 27 #include <linux/uidgid.h> 28 #include <asm/div64.h> 29 #include <asm/page.h> 30 31 #include "debug.h" 32 #include "ntfs.h" 33 34 struct dentry; 35 struct fiemap_extent_info; 36 struct user_namespace; 37 struct page; 38 struct writeback_control; 39 enum utf16_endian; 40 41 42 #define MINUS_ONE_T ((size_t)(-1)) 43 /* Biggest MFT / smallest cluster */ 44 #define MAXIMUM_BYTES_PER_MFT 4096 45 #define MAXIMUM_SHIFT_BYTES_PER_MFT 12 46 #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) 47 48 #define MAXIMUM_BYTES_PER_INDEX 4096 49 #define MAXIMUM_SHIFT_BYTES_PER_INDEX 12 50 #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) 51 52 /* NTFS specific error code when fixup failed. */ 53 #define E_NTFS_FIXUP 555 54 /* NTFS specific error code about resident->nonresident. */ 55 #define E_NTFS_NONRESIDENT 556 56 /* NTFS specific error code about punch hole. */ 57 #define E_NTFS_NOTALIGNED 557 58 /* NTFS specific error code when on-disk struct is corrupted. */ 59 #define E_NTFS_CORRUPT 558 60 61 62 /* sbi->flags */ 63 #define NTFS_FLAGS_NODISCARD 0x00000001 64 /* ntfs in shutdown state. */ 65 #define NTFS_FLAGS_SHUTDOWN_BIT 0x00000002 /* == 4*/ 66 /* Set when LogFile is replaying. */ 67 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 68 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 69 #define NTFS_FLAGS_MFTMIRR 0x00001000 70 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 71 72 73 /* ni->ni_flags */ 74 /* 75 * Data attribute is external compressed (LZX/Xpress) 76 * 1 - WOF_COMPRESSION_XPRESS4K 77 * 2 - WOF_COMPRESSION_XPRESS8K 78 * 3 - WOF_COMPRESSION_XPRESS16K 79 * 4 - WOF_COMPRESSION_LZX32K 80 */ 81 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 82 /* Data attribute is deduplicated. */ 83 #define NI_FLAG_DEDUPLICATED 0x00000010 84 #define NI_FLAG_EA 0x00000020 85 #define NI_FLAG_DIR 0x00000040 86 #define NI_FLAG_RESIDENT 0x00000080 87 #define NI_FLAG_UPDATE_PARENT 0x00000100 88 // clang-format on 89 90 struct ntfs_mount_options { 91 char *nls_name; 92 struct nls_table *nls; 93 94 kuid_t fs_uid; 95 kgid_t fs_gid; 96 u16 fs_fmask_inv; 97 u16 fs_dmask_inv; 98 99 unsigned fmask : 1; /* fmask was set. */ 100 unsigned dmask : 1; /*dmask was set. */ 101 unsigned sys_immutable : 1; /* Immutable system files. */ 102 unsigned discard : 1; /* Issue discard requests on deletions. */ 103 unsigned sparse : 1; /* Create sparse files. */ 104 unsigned showmeta : 1; /* Show meta files. */ 105 unsigned nohidden : 1; /* Do not show hidden files. */ 106 unsigned hide_dot_files : 1; /* Set hidden flag on dot files. */ 107 unsigned windows_names : 1; /* Disallow names forbidden by Windows. */ 108 unsigned force : 1; /* RW mount dirty volume. */ 109 unsigned prealloc : 1; /* Preallocate space when file is growing. */ 110 unsigned nocase : 1; /* case insensitive. */ 111 }; 112 113 /* Special value to unpack and deallocate. */ 114 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 115 116 /* TODO: Use rb tree instead of array. */ 117 struct runs_tree { 118 struct ntfs_run *runs; 119 size_t count; /* Currently used size a ntfs_run storage. */ 120 size_t allocated; /* Currently allocated ntfs_run storage size. */ 121 }; 122 123 struct ntfs_buffers { 124 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 125 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 126 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 127 u32 bytes; 128 u32 nbufs; 129 u32 off; 130 }; 131 132 enum ALLOCATE_OPT { 133 ALLOCATE_DEF = 0, // Allocate all clusters. 134 ALLOCATE_MFT = 1, // Allocate for MFT. 135 ALLOCATE_ZERO = 2, // Zeroout new allocated clusters 136 }; 137 138 enum bitmap_mutex_classes { 139 BITMAP_MUTEX_CLUSTERS = 0, 140 BITMAP_MUTEX_MFT = 1, 141 }; 142 143 struct wnd_bitmap { 144 struct super_block *sb; 145 struct rw_semaphore rw_lock; 146 147 struct runs_tree run; 148 size_t nbits; 149 150 size_t total_zeroes; // Total number of free bits. 151 u16 *free_bits; // Free bits in each window. 152 size_t nwnd; 153 u32 bits_last; // Bits in last window. 154 155 struct rb_root start_tree; // Extents, sorted by 'start'. 156 struct rb_root count_tree; // Extents, sorted by 'count + start'. 157 size_t count; // Extents count. 158 159 /* 160 * -1 Tree is activated but not updated (too many fragments). 161 * 0 - Tree is not activated. 162 * 1 - Tree is activated and updated. 163 */ 164 int uptodated; 165 size_t extent_min; // Minimal extent used while building. 166 size_t extent_max; // Upper estimate of biggest free block. 167 168 /* Zone [bit, end) */ 169 size_t zone_bit; 170 size_t zone_end; 171 172 bool inited; 173 }; 174 175 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, 176 size_t len2, const void *param); 177 178 enum index_mutex_classed { 179 INDEX_MUTEX_I30 = 0, 180 INDEX_MUTEX_SII = 1, 181 INDEX_MUTEX_SDH = 2, 182 INDEX_MUTEX_SO = 3, 183 INDEX_MUTEX_SQ = 4, 184 INDEX_MUTEX_SR = 5, 185 INDEX_MUTEX_TOTAL 186 }; 187 188 /* ntfs_index - Allocation unit inside directory. */ 189 struct ntfs_index { 190 struct runs_tree bitmap_run; 191 struct runs_tree alloc_run; 192 /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ 193 struct rw_semaphore run_lock; 194 195 /*TODO: Remove 'cmp'. */ 196 NTFS_CMP_FUNC cmp; 197 198 u8 index_bits; // log2(root->index_block_size) 199 u8 idx2vbn_bits; // log2(root->index_block_clst) 200 u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits 201 u8 type; // index_mutex_classed 202 }; 203 204 /* Minimum MFT zone. */ 205 #define NTFS_MIN_MFT_ZONE 100 206 /* Step to increase the MFT. */ 207 #define NTFS_MFT_INCREASE_STEP 1024 208 209 /* Ntfs file system in-core superblock data. */ 210 struct ntfs_sb_info { 211 struct super_block *sb; 212 213 u32 discard_granularity; 214 u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) 215 216 u32 cluster_size; // bytes per cluster 217 u32 cluster_mask; // == cluster_size - 1 218 u64 cluster_mask_inv; // ~(cluster_size - 1) 219 u32 block_mask; // sb->s_blocksize - 1 220 u32 blocks_per_cluster; // cluster_size / sb->s_blocksize 221 222 u32 record_size; 223 u32 index_size; 224 225 u8 cluster_bits; 226 u8 record_bits; 227 228 u64 maxbytes; // Maximum size for normal files. 229 u64 maxbytes_sparse; // Maximum size for sparse file. 230 231 unsigned long flags; // See NTFS_FLAGS_ 232 233 CLST zone_max; // Maximum MFT zone length in clusters 234 CLST bad_clusters; // The count of marked bad clusters. 235 236 u16 max_bytes_per_attr; // Maximum attribute size in record. 237 u16 attr_size_tr; // Attribute size threshold (320 bytes). 238 239 /* Records in $Extend. */ 240 CLST objid_no; 241 CLST quota_no; 242 CLST reparse_no; 243 CLST usn_jrnl_no; 244 245 struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. 246 u32 def_entries; 247 u32 ea_max_size; 248 249 struct MFT_REC *new_rec; 250 251 u16 *upcase; 252 253 struct { 254 u64 lbo, lbo2; 255 struct ntfs_inode *ni; 256 struct wnd_bitmap bitmap; // $MFT::Bitmap 257 /* 258 * MFT records [11-24) used to expand MFT itself. 259 * They always marked as used in $MFT::Bitmap 260 * 'reserved_bitmap' contains real bitmap of these records. 261 */ 262 ulong reserved_bitmap; // Bitmap of used records [11 - 24) 263 size_t next_free; // The next record to allocate from 264 size_t used; // MFT valid size in records. 265 u32 recs_mirr; // Number of records in MFTMirr 266 u8 next_reserved; 267 u8 reserved_bitmap_inited; 268 } mft; 269 270 struct { 271 struct wnd_bitmap bitmap; // $Bitmap::Data 272 CLST next_free_lcn; 273 } used; 274 275 struct { 276 u64 size; // In bytes. 277 u64 blocks; // In blocks. 278 u64 ser_num; 279 struct ntfs_inode *ni; 280 __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. 281 u8 major_ver; 282 u8 minor_ver; 283 char label[256]; 284 bool real_dirty; // Real fs state. 285 } volume; 286 287 struct { 288 struct ntfs_index index_sii; 289 struct ntfs_index index_sdh; 290 struct ntfs_inode *ni; 291 u32 next_id; 292 u64 next_off; 293 __le32 def_security_id; 294 } security; 295 296 struct { 297 struct ntfs_index index_r; 298 struct ntfs_inode *ni; 299 u64 max_size; // 16K 300 } reparse; 301 302 struct { 303 struct ntfs_index index_o; 304 struct ntfs_inode *ni; 305 } objid; 306 307 struct { 308 struct mutex mtx_lznt; 309 struct lznt *lznt; 310 #ifdef CONFIG_NTFS3_LZX_XPRESS 311 struct mutex mtx_xpress; 312 struct xpress_decompressor *xpress; 313 struct mutex mtx_lzx; 314 struct lzx_decompressor *lzx; 315 #endif 316 } compress; 317 318 struct ntfs_mount_options *options; 319 struct ratelimit_state msg_ratelimit; 320 struct proc_dir_entry *procdir; 321 }; 322 323 /* One MFT record(usually 1024 bytes), consists of attributes. */ 324 struct mft_inode { 325 struct rb_node node; 326 struct ntfs_sb_info *sbi; 327 328 struct MFT_REC *mrec; 329 struct ntfs_buffers nb; 330 331 CLST rno; 332 bool dirty; 333 }; 334 335 /* Nested class for ntfs_inode::ni_lock. */ 336 enum ntfs_inode_mutex_lock_class { 337 NTFS_INODE_MUTEX_DIRTY = 1, 338 NTFS_INODE_MUTEX_SECURITY, 339 NTFS_INODE_MUTEX_OBJID, 340 NTFS_INODE_MUTEX_REPARSE, 341 NTFS_INODE_MUTEX_NORMAL, 342 NTFS_INODE_MUTEX_PARENT, 343 NTFS_INODE_MUTEX_PARENT2, 344 }; 345 346 /* 347 * struct ntfs_inode 348 * 349 * Ntfs inode - extends linux inode. consists of one or more MFT inodes. 350 */ 351 struct ntfs_inode { 352 struct mft_inode mi; // base record 353 354 /* 355 * Valid size: [0 - i_valid) - these range in file contains valid data. 356 * Range [i_valid - inode->i_size) - contains 0. 357 * Usually i_valid <= inode->i_size. 358 */ 359 u64 i_valid; 360 struct timespec64 i_crtime; 361 362 struct mutex ni_lock; 363 364 /* File attributes from std. */ 365 enum FILE_ATTRIBUTE std_fa; 366 __le32 std_security_id; 367 368 /* 369 * Tree of mft_inode. 370 * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes 371 * e.g. file becomes too fragmented or contains a lot of names. 372 */ 373 struct rb_root mi_tree; 374 375 /* 376 * This member is used in ntfs_readdir to ensure that all subrecords are loaded 377 */ 378 u8 mi_loaded; 379 380 union { 381 struct ntfs_index dir; 382 struct { 383 struct rw_semaphore run_lock; 384 struct runs_tree run; 385 #ifdef CONFIG_NTFS3_LZX_XPRESS 386 struct page *offs_page; 387 #endif 388 } file; 389 }; 390 391 struct { 392 struct runs_tree run; 393 struct ATTR_LIST_ENTRY *le; // 1K aligned memory. 394 size_t size; 395 bool dirty; 396 } attr_list; 397 398 size_t ni_flags; // NI_FLAG_XXX 399 400 struct inode vfs_inode; 401 }; 402 403 struct indx_node { 404 struct ntfs_buffers nb; 405 struct INDEX_BUFFER *index; 406 }; 407 408 struct ntfs_fnd { 409 int level; 410 struct indx_node *nodes[20]; 411 struct NTFS_DE *de[20]; 412 struct NTFS_DE *root_de; 413 }; 414 415 enum REPARSE_SIGN { 416 REPARSE_NONE = 0, 417 REPARSE_COMPRESSED = 1, 418 REPARSE_DEDUPLICATED = 2, 419 REPARSE_LINK = 3 420 }; 421 422 /* Functions from attrib.c */ 423 int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, 424 CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, 425 enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, 426 CLST *new_lcn, CLST *new_len); 427 int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, 428 struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, 429 u64 new_size, struct runs_tree *run, 430 struct ATTRIB **ins_attr, struct page *page); 431 int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, 432 const __le16 *name, u8 name_len, struct runs_tree *run, 433 u64 new_size, const u64 *new_valid, bool keep_prealloc, 434 struct ATTRIB **ret); 435 int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, 436 CLST *len, bool *new, bool zero); 437 int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); 438 int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); 439 int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, 440 const __le16 *name, u8 name_len, struct runs_tree *run, 441 CLST vcn); 442 int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, 443 const __le16 *name, u8 name_len, struct runs_tree *run, 444 u64 from, u64 to); 445 int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, 446 struct runs_tree *run, u64 frame, u64 frames, 447 u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); 448 int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, 449 CLST frame, CLST *clst_data, 450 struct runs_tree *run); 451 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, 452 u64 new_valid); 453 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 454 int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 455 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); 456 457 /* Functions from attrlist.c */ 458 void al_destroy(struct ntfs_inode *ni); 459 bool al_verify(struct ntfs_inode *ni); 460 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); 461 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, 462 struct ATTR_LIST_ENTRY *le); 463 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, 464 struct ATTR_LIST_ENTRY *le, 465 const struct ATTRIB *attr); 466 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, 467 struct ATTR_LIST_ENTRY *le, 468 enum ATTR_TYPE type, const __le16 *name, 469 u8 name_len, const CLST *vcn); 470 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, 471 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, 472 struct ATTR_LIST_ENTRY **new_le); 473 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); 474 bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, 475 const __le16 *name, u8 name_len, const struct MFT_REF *ref); 476 int al_update(struct ntfs_inode *ni, int sync); al_aligned(size_t size)477 static inline size_t al_aligned(size_t size) 478 { 479 return size_add(size, 1023) & ~(size_t)1023; 480 } 481 482 /* Globals from bitfunc.c */ 483 bool are_bits_clear(const void *map, size_t bit, size_t nbits); 484 bool are_bits_set(const void *map, size_t bit, size_t nbits); 485 size_t get_set_bits_ex(const void *map, size_t bit, size_t nbits); 486 487 /* Globals from dir.c */ 488 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, 489 u8 *buf, int buf_len); 490 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 491 struct cpu_str *uni, u32 max_ulen, 492 enum utf16_endian endian); 493 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 494 struct ntfs_fnd *fnd); 495 bool dir_is_empty(struct inode *dir); 496 extern const struct file_operations ntfs_dir_operations; 497 498 /* Globals from file.c */ 499 int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, 500 struct kstat *stat, u32 request_mask, u32 flags); 501 int ntfs3_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 502 struct iattr *attr); 503 int ntfs_file_open(struct inode *inode, struct file *file); 504 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 505 __u64 start, __u64 len); 506 extern const struct inode_operations ntfs_special_inode_operations; 507 extern const struct inode_operations ntfs_file_inode_operations; 508 extern const struct file_operations ntfs_file_operations; 509 510 /* Globals from frecord.c */ 511 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 512 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 513 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 514 void ni_clear(struct ntfs_inode *ni); 515 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 516 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 517 struct mft_inode **mi); 518 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 519 struct ATTR_LIST_ENTRY **entry_o, 520 enum ATTR_TYPE type, const __le16 *name, 521 u8 name_len, const CLST *vcn, 522 struct mft_inode **mi); 523 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 524 struct ATTR_LIST_ENTRY **le, 525 struct mft_inode **mi); 526 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 527 const __le16 *name, u8 name_len, CLST vcn, 528 struct mft_inode **pmi); 529 int ni_load_all_mi(struct ntfs_inode *ni); 530 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 531 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 532 const __le16 *name, u8 name_len, bool base_only, 533 const __le16 *id); 534 int ni_create_attr_list(struct ntfs_inode *ni); 535 int ni_expand_list(struct ntfs_inode *ni); 536 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 537 const __le16 *name, u8 name_len, 538 const struct runs_tree *run, CLST svcn, CLST len, 539 __le16 flags, struct ATTRIB **new_attr, 540 struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); 541 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 542 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 543 struct ATTRIB **new_attr, struct mft_inode **mi, 544 struct ATTR_LIST_ENTRY **le); 545 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 546 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 547 int ni_delete_all(struct ntfs_inode *ni); 548 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 549 const struct le_str *uni, 550 const struct MFT_REF *home, 551 struct mft_inode **mi, 552 struct ATTR_LIST_ENTRY **entry); 553 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 554 struct mft_inode **mi, 555 struct ATTR_LIST_ENTRY **entry); 556 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 557 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 558 struct REPARSE_DATA_BUFFER *buffer); 559 int ni_write_inode(struct inode *inode, int sync, const char *hint); 560 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 561 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 562 __u64 vbo, __u64 len); 563 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); 564 int ni_decompress_file(struct ntfs_inode *ni); 565 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 566 u32 pages_per_frame); 567 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 568 u32 pages_per_frame); 569 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 570 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 571 572 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 573 struct NTFS_DE *de, struct NTFS_DE *de2, 574 int undo_step); 575 576 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 577 struct NTFS_DE *de); 578 579 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 580 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 581 bool *is_bad); 582 583 bool ni_is_dirty(struct inode *inode); 584 585 /* Globals from fslog.c */ 586 bool check_index_header(const struct INDEX_HDR *hdr, size_t bytes); 587 int log_replay(struct ntfs_inode *ni, bool *initialized); 588 589 /* Globals from fsntfs.c */ 590 struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block); 591 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 592 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 593 bool simple); 594 int ntfs_extend_init(struct ntfs_sb_info *sbi); 595 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 596 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 597 CLST *new_lcn, CLST *new_len, 598 enum ALLOCATE_OPT opt); 599 bool ntfs_check_for_free_space(struct ntfs_sb_info *sbi, CLST clen, CLST mlen); 600 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 601 struct ntfs_inode *ni, struct mft_inode **mi); 602 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); 603 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 604 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 605 void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 606 void ntfs_bad_inode(struct inode *inode, const char *hint); 607 #define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) 608 enum NTFS_DIRTY_FLAGS { 609 NTFS_DIRTY_CLEAR = 0, 610 NTFS_DIRTY_DIRTY = 1, 611 NTFS_DIRTY_ERROR = 2, 612 }; 613 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 614 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); 615 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 616 const void *buffer, int wait); 617 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 618 u64 vbo, const void *buf, size_t bytes, int sync); 619 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 620 const struct runs_tree *run, u64 vbo); 621 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 622 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 623 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 624 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 625 struct ntfs_buffers *nb); 626 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 627 u32 bytes, struct ntfs_buffers *nb); 628 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 629 struct ntfs_buffers *nb, int sync); 630 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, 631 struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, 632 enum req_op op); 633 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 634 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 635 u64 vbo, u64 *lbo, u64 *bytes); 636 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 637 enum RECORD_FLAG flag); 638 extern const u8 s_default_security[0x50]; 639 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 640 int ntfs_security_init(struct ntfs_sb_info *sbi); 641 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 642 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 643 size_t *size); 644 int ntfs_insert_security(struct ntfs_sb_info *sbi, 645 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 646 u32 size, __le32 *security_id, bool *inserted); 647 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 648 int ntfs_objid_init(struct ntfs_sb_info *sbi); 649 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 650 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 651 const struct MFT_REF *ref); 652 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 653 const struct MFT_REF *ref); 654 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 655 int run_deallocate(struct ntfs_sb_info *sbi, const struct runs_tree *run, 656 bool trim); 657 bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name); 658 int ntfs_set_label(struct ntfs_sb_info *sbi, u8 *label, int len); 659 660 /* Globals from index.c */ 661 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 662 void fnd_clear(struct ntfs_fnd *fnd); fnd_get(void)663 static inline struct ntfs_fnd *fnd_get(void) 664 { 665 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 666 } fnd_put(struct ntfs_fnd * fnd)667 static inline void fnd_put(struct ntfs_fnd *fnd) 668 { 669 if (fnd) { 670 fnd_clear(fnd); 671 kfree(fnd); 672 } 673 } 674 void indx_clear(struct ntfs_index *idx); 675 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 676 const struct ATTRIB *attr, enum index_mutex_classed type); 677 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 678 struct ATTRIB **attr, struct mft_inode **mi); 679 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 680 struct indx_node **node); 681 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 682 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 683 const void *param, int *diff, struct NTFS_DE **entry, 684 struct ntfs_fnd *fnd); 685 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 686 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 687 struct ntfs_fnd *fnd); 688 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 689 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 690 size_t *off, struct ntfs_fnd *fnd); 691 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 692 const struct NTFS_DE *new_de, const void *param, 693 struct ntfs_fnd *fnd, bool undo); 694 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 695 const void *key, u32 key_len, const void *param); 696 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 697 const struct ATTR_FILE_NAME *fname, 698 const struct NTFS_DUP_INFO *dup, int sync); 699 700 /* Globals from inode.c */ 701 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 702 const struct cpu_str *name); 703 int ntfs_set_size(struct inode *inode, u64 new_size); 704 int reset_log_file(struct inode *inode); 705 int ntfs_get_block(struct inode *inode, sector_t vbn, 706 struct buffer_head *bh_result, int create); 707 int ntfs_write_begin(struct file *file, struct address_space *mapping, 708 loff_t pos, u32 len, struct page **pagep, void **fsdata); 709 int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos, 710 u32 len, u32 copied, struct page *page, void *fsdata); 711 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 712 int ntfs_sync_inode(struct inode *inode); 713 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, 714 struct inode *i2); 715 int inode_write_data(struct inode *inode, const void *data, size_t bytes); 716 struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir, 717 struct dentry *dentry, 718 const struct cpu_str *uni, umode_t mode, 719 dev_t dev, const char *symname, u32 size, 720 struct ntfs_fnd *fnd); 721 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 722 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 723 void ntfs_evict_inode(struct inode *inode); 724 extern const struct inode_operations ntfs_link_inode_operations; 725 extern const struct address_space_operations ntfs_aops; 726 extern const struct address_space_operations ntfs_aops_cmpr; 727 728 /* Globals from name_i.c */ 729 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 730 const struct cpu_str *uni); 731 struct dentry *ntfs3_get_parent(struct dentry *child); 732 733 extern const struct inode_operations ntfs_dir_inode_operations; 734 extern const struct inode_operations ntfs_special_inode_operations; 735 extern const struct dentry_operations ntfs_dentry_ops; 736 737 /* Globals from record.c */ 738 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 739 void mi_put(struct mft_inode *mi); 740 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 741 int mi_read(struct mft_inode *mi, bool is_mft); 742 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); 743 // TODO: id? 744 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, 745 enum ATTR_TYPE type, const __le16 *name, 746 u8 name_len, const __le16 *id); rec_find_attr_le(struct mft_inode * rec,struct ATTR_LIST_ENTRY * le)747 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, 748 struct ATTR_LIST_ENTRY *le) 749 { 750 return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, 751 &le->id); 752 } 753 int mi_write(struct mft_inode *mi, int wait); 754 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 755 __le16 flags, bool is_mft); 756 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, 757 const __le16 *name, u8 name_len, u32 asize, 758 u16 name_off); 759 760 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 761 struct ATTRIB *attr); 762 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 763 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 764 struct runs_tree *run, CLST len); mi_is_ref(const struct mft_inode * mi,const struct MFT_REF * ref)765 static inline bool mi_is_ref(const struct mft_inode *mi, 766 const struct MFT_REF *ref) 767 { 768 if (le32_to_cpu(ref->low) != mi->rno) 769 return false; 770 if (ref->seq != mi->mrec->seq) 771 return false; 772 773 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 774 return le16_to_cpu(ref->high) == (mi->rno >> 32); 775 #else 776 return !ref->high; 777 #endif 778 } 779 mi_get_ref(const struct mft_inode * mi,struct MFT_REF * ref)780 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 781 { 782 ref->low = cpu_to_le32(mi->rno); 783 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 784 ref->high = cpu_to_le16(mi->rno >> 32); 785 #else 786 ref->high = 0; 787 #endif 788 ref->seq = mi->mrec->seq; 789 } 790 791 /* Globals from run.c */ 792 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 793 CLST *len, size_t *index); 794 void run_truncate(struct runs_tree *run, CLST vcn); 795 void run_truncate_head(struct runs_tree *run, CLST vcn); 796 void run_truncate_around(struct runs_tree *run, CLST vcn); 797 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 798 bool is_mft); 799 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); 800 bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); 801 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 802 CLST *lcn, CLST *len); 803 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 804 805 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 806 u32 run_buf_size, CLST *packed_vcns); 807 int run_unpack(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); 810 811 #ifdef NTFS3_CHECK_FREE_CLST 812 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 813 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 814 int run_buf_size); 815 #else 816 #define run_unpack_ex run_unpack 817 #endif 818 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 819 int run_clone(const struct runs_tree *run, struct runs_tree *new_run); 820 821 /* Globals from super.c */ 822 void *ntfs_set_shared(void *ptr, u32 bytes); 823 void *ntfs_put_shared(void *ptr); 824 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 825 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 826 827 /* Globals from bitmap.c*/ 828 int __init ntfs3_init_bitmap(void); 829 void ntfs3_exit_bitmap(void); 830 void wnd_close(struct wnd_bitmap *wnd); wnd_zeroes(const struct wnd_bitmap * wnd)831 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 832 { 833 return wnd->total_zeroes; 834 } 835 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 836 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 837 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 838 int wnd_set_used_safe(struct wnd_bitmap *wnd, size_t bit, size_t bits, 839 size_t *done); 840 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 841 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 842 843 /* Possible values for 'flags' 'wnd_find'. */ 844 #define BITMAP_FIND_MARK_AS_USED 0x01 845 #define BITMAP_FIND_FULL 0x02 846 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 847 size_t flags, size_t *allocated); 848 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 849 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 850 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 851 852 void ntfs_bitmap_set_le(void *map, unsigned int start, int len); 853 void ntfs_bitmap_clear_le(void *map, unsigned int start, int len); 854 unsigned int ntfs_bitmap_weight_le(const void *bitmap, int bits); 855 856 /* Globals from upcase.c */ 857 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 858 const u16 *upcase, bool bothcase); 859 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 860 const u16 *upcase, bool bothcase); 861 unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase, 862 unsigned long hash); 863 864 /* globals from xattr.c */ 865 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 866 struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, 867 int type); 868 int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, 869 struct posix_acl *acl, int type); 870 int ntfs_init_acl(struct mnt_idmap *idmap, struct inode *inode, 871 struct inode *dir); 872 #else 873 #define ntfs_get_acl NULL 874 #define ntfs_set_acl NULL 875 #endif 876 877 int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry); 878 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 879 extern const struct xattr_handler *ntfs_xattr_handlers[]; 880 881 int ntfs_save_wsl_perm(struct inode *inode, __le16 *ea_size); 882 void ntfs_get_wsl_perm(struct inode *inode); 883 884 /* globals from lznt.c */ 885 struct lznt *get_lznt_ctx(int level); 886 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 887 void *compressed, size_t compressed_size, 888 struct lznt *ctx); 889 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 890 void *uncompressed, size_t uncompressed_size); 891 is_ntfs3(struct ntfs_sb_info * sbi)892 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 893 { 894 return sbi->volume.major_ver >= 3; 895 } 896 897 /* (sb->s_flags & SB_ACTIVE) */ is_mounted(struct ntfs_sb_info * sbi)898 static inline bool is_mounted(struct ntfs_sb_info *sbi) 899 { 900 return !!sbi->sb->s_root; 901 } 902 ntfs_is_meta_file(struct ntfs_sb_info * sbi,CLST rno)903 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 904 { 905 return rno < MFT_REC_FREE || rno == sbi->objid_no || 906 rno == sbi->quota_no || rno == sbi->reparse_no || 907 rno == sbi->usn_jrnl_no; 908 } 909 ntfs_unmap_page(struct page * page)910 static inline void ntfs_unmap_page(struct page *page) 911 { 912 kunmap(page); 913 put_page(page); 914 } 915 ntfs_map_page(struct address_space * mapping,unsigned long index)916 static inline struct page *ntfs_map_page(struct address_space *mapping, 917 unsigned long index) 918 { 919 struct page *page = read_mapping_page(mapping, index, NULL); 920 921 if (!IS_ERR(page)) 922 kmap(page); 923 return page; 924 } 925 wnd_zone_bit(const struct wnd_bitmap * wnd)926 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 927 { 928 return wnd->zone_bit; 929 } 930 wnd_zone_len(const struct wnd_bitmap * wnd)931 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 932 { 933 return wnd->zone_end - wnd->zone_bit; 934 } 935 run_init(struct runs_tree * run)936 static inline void run_init(struct runs_tree *run) 937 { 938 run->runs = NULL; 939 run->count = 0; 940 run->allocated = 0; 941 } 942 run_alloc(void)943 static inline struct runs_tree *run_alloc(void) 944 { 945 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 946 } 947 run_close(struct runs_tree * run)948 static inline void run_close(struct runs_tree *run) 949 { 950 kvfree(run->runs); 951 memset(run, 0, sizeof(*run)); 952 } 953 run_free(struct runs_tree * run)954 static inline void run_free(struct runs_tree *run) 955 { 956 if (run) { 957 kvfree(run->runs); 958 kfree(run); 959 } 960 } 961 run_is_empty(struct runs_tree * run)962 static inline bool run_is_empty(struct runs_tree *run) 963 { 964 return !run->count; 965 } 966 967 /* NTFS uses quad aligned bitmaps. */ ntfs3_bitmap_size(size_t bits)968 static inline size_t ntfs3_bitmap_size(size_t bits) 969 { 970 return BITS_TO_U64(bits) * sizeof(u64); 971 } 972 973 #define _100ns2seconds 10000000 974 #define SecondsToStartOf1970 0x00000002B6109100 975 976 #define NTFS_TIME_GRAN 100 977 978 /* 979 * kernel2nt - Converts in-memory kernel timestamp into nt time. 980 */ kernel2nt(const struct timespec64 * ts)981 static inline __le64 kernel2nt(const struct timespec64 *ts) 982 { 983 // 10^7 units of 100 nanoseconds one second 984 return cpu_to_le64(_100ns2seconds * 985 (ts->tv_sec + SecondsToStartOf1970) + 986 ts->tv_nsec / NTFS_TIME_GRAN); 987 } 988 989 /* 990 * nt2kernel - Converts on-disk nt time into kernel timestamp. 991 */ nt2kernel(const __le64 tm,struct timespec64 * ts)992 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 993 { 994 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 995 996 // WARNING: do_div changes its first argument(!) 997 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 998 ts->tv_sec = t; 999 } 1000 ntfs_sb(struct super_block * sb)1001 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 1002 { 1003 return sb->s_fs_info; 1004 } 1005 ntfs3_forced_shutdown(struct super_block * sb)1006 static inline int ntfs3_forced_shutdown(struct super_block *sb) 1007 { 1008 return test_bit(NTFS_FLAGS_SHUTDOWN_BIT, &ntfs_sb(sb)->flags); 1009 } 1010 1011 /* 1012 * ntfs_up_cluster - Align up on cluster boundary. 1013 */ ntfs_up_cluster(const struct ntfs_sb_info * sbi,u64 size)1014 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 1015 { 1016 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 1017 } 1018 1019 /* 1020 * ntfs_up_block - Align up on cluster boundary. 1021 */ ntfs_up_block(const struct super_block * sb,u64 size)1022 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 1023 { 1024 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 1025 } 1026 bytes_to_cluster(const struct ntfs_sb_info * sbi,u64 size)1027 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 1028 { 1029 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 1030 } 1031 bytes_to_block(const struct super_block * sb,u64 size)1032 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 1033 { 1034 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 1035 } 1036 ntfs_i(struct inode * inode)1037 static inline struct ntfs_inode *ntfs_i(struct inode *inode) 1038 { 1039 return container_of(inode, struct ntfs_inode, vfs_inode); 1040 } 1041 is_compressed(const struct ntfs_inode * ni)1042 static inline bool is_compressed(const struct ntfs_inode *ni) 1043 { 1044 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1045 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1046 } 1047 ni_ext_compress_bits(const struct ntfs_inode * ni)1048 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1049 { 1050 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1051 } 1052 1053 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ ni_set_ext_compress_bits(struct ntfs_inode * ni,u8 bits)1054 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1055 { 1056 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1057 } 1058 is_dedup(const struct ntfs_inode * ni)1059 static inline bool is_dedup(const struct ntfs_inode *ni) 1060 { 1061 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1062 } 1063 is_encrypted(const struct ntfs_inode * ni)1064 static inline bool is_encrypted(const struct ntfs_inode *ni) 1065 { 1066 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1067 } 1068 is_sparsed(const struct ntfs_inode * ni)1069 static inline bool is_sparsed(const struct ntfs_inode *ni) 1070 { 1071 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1072 } 1073 is_resident(struct ntfs_inode * ni)1074 static inline int is_resident(struct ntfs_inode *ni) 1075 { 1076 return ni->ni_flags & NI_FLAG_RESIDENT; 1077 } 1078 le16_sub_cpu(__le16 * var,u16 val)1079 static inline void le16_sub_cpu(__le16 *var, u16 val) 1080 { 1081 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1082 } 1083 le32_sub_cpu(__le32 * var,u32 val)1084 static inline void le32_sub_cpu(__le32 *var, u32 val) 1085 { 1086 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1087 } 1088 nb_put(struct ntfs_buffers * nb)1089 static inline void nb_put(struct ntfs_buffers *nb) 1090 { 1091 u32 i, nbufs = nb->nbufs; 1092 1093 if (!nbufs) 1094 return; 1095 1096 for (i = 0; i < nbufs; i++) 1097 put_bh(nb->bh[i]); 1098 nb->nbufs = 0; 1099 } 1100 put_indx_node(struct indx_node * in)1101 static inline void put_indx_node(struct indx_node *in) 1102 { 1103 if (!in) 1104 return; 1105 1106 kfree(in->index); 1107 nb_put(&in->nb); 1108 kfree(in); 1109 } 1110 mi_clear(struct mft_inode * mi)1111 static inline void mi_clear(struct mft_inode *mi) 1112 { 1113 nb_put(&mi->nb); 1114 kfree(mi->mrec); 1115 mi->mrec = NULL; 1116 } 1117 ni_lock(struct ntfs_inode * ni)1118 static inline void ni_lock(struct ntfs_inode *ni) 1119 { 1120 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1121 } 1122 ni_lock_dir(struct ntfs_inode * ni)1123 static inline void ni_lock_dir(struct ntfs_inode *ni) 1124 { 1125 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1126 } 1127 ni_lock_dir2(struct ntfs_inode * ni)1128 static inline void ni_lock_dir2(struct ntfs_inode *ni) 1129 { 1130 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT2); 1131 } 1132 ni_unlock(struct ntfs_inode * ni)1133 static inline void ni_unlock(struct ntfs_inode *ni) 1134 { 1135 mutex_unlock(&ni->ni_lock); 1136 } 1137 ni_trylock(struct ntfs_inode * ni)1138 static inline int ni_trylock(struct ntfs_inode *ni) 1139 { 1140 return mutex_trylock(&ni->ni_lock); 1141 } 1142 attr_load_runs_attr(struct ntfs_inode * ni,struct ATTRIB * attr,struct runs_tree * run,CLST vcn)1143 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1144 struct ATTRIB *attr, 1145 struct runs_tree *run, CLST vcn) 1146 { 1147 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1148 attr->name_len, run, vcn); 1149 } 1150 le64_sub_cpu(__le64 * var,u64 val)1151 static inline void le64_sub_cpu(__le64 *var, u64 val) 1152 { 1153 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1154 } 1155 1156 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1157