1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * 4 * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. 5 * 6 */ 7 8 // clang-format off 9 #ifndef _LINUX_NTFS3_NTFS_FS_H 10 #define _LINUX_NTFS3_NTFS_FS_H 11 12 #include <linux/blkdev.h> 13 #include <linux/buffer_head.h> 14 #include <linux/fs.h> 15 #include <linux/highmem.h> 16 #include <linux/kernel.h> 17 #include <linux/mm.h> 18 #include <linux/mutex.h> 19 #include <linux/page-flags.h> 20 #include <linux/pagemap.h> 21 #include <linux/rbtree.h> 22 #include <linux/rwsem.h> 23 #include <linux/slab.h> 24 #include <linux/string.h> 25 #include <linux/time64.h> 26 #include <linux/types.h> 27 #include <linux/uidgid.h> 28 #include <asm/div64.h> 29 #include <asm/page.h> 30 31 #include "debug.h" 32 #include "ntfs.h" 33 34 struct dentry; 35 struct fiemap_extent_info; 36 struct user_namespace; 37 struct page; 38 struct writeback_control; 39 enum utf16_endian; 40 41 42 #define MINUS_ONE_T ((size_t)(-1)) 43 /* Biggest MFT / smallest cluster */ 44 #define MAXIMUM_BYTES_PER_MFT 4096 45 #define MAXIMUM_SHIFT_BYTES_PER_MFT 12 46 #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) 47 48 #define MAXIMUM_BYTES_PER_INDEX 4096 49 #define MAXIMUM_SHIFT_BYTES_PER_INDEX 12 50 #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) 51 52 /* NTFS specific error code when fixup failed. */ 53 #define E_NTFS_FIXUP 555 54 /* NTFS specific error code about resident->nonresident. */ 55 #define E_NTFS_NONRESIDENT 556 56 /* NTFS specific error code about punch hole. */ 57 #define E_NTFS_NOTALIGNED 557 58 /* NTFS specific error code when on-disk struct is corrupted. */ 59 #define E_NTFS_CORRUPT 558 60 61 62 /* sbi->flags */ 63 #define NTFS_FLAGS_NODISCARD 0x00000001 64 /* ntfs in shutdown state. */ 65 #define NTFS_FLAGS_SHUTDOWN_BIT 0x00000002 /* == 4*/ 66 /* Set when LogFile is replaying. */ 67 #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 68 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ 69 #define NTFS_FLAGS_MFTMIRR 0x00001000 70 #define NTFS_FLAGS_NEED_REPLAY 0x04000000 71 72 73 /* ni->ni_flags */ 74 /* 75 * Data attribute is external compressed (LZX/Xpress) 76 * 1 - WOF_COMPRESSION_XPRESS4K 77 * 2 - WOF_COMPRESSION_XPRESS8K 78 * 3 - WOF_COMPRESSION_XPRESS16K 79 * 4 - WOF_COMPRESSION_LZX32K 80 */ 81 #define NI_FLAG_COMPRESSED_MASK 0x0000000f 82 /* Data attribute is deduplicated. */ 83 #define NI_FLAG_DEDUPLICATED 0x00000010 84 #define NI_FLAG_EA 0x00000020 85 #define NI_FLAG_DIR 0x00000040 86 #define NI_FLAG_RESIDENT 0x00000080 87 #define NI_FLAG_UPDATE_PARENT 0x00000100 88 // clang-format on 89 90 struct ntfs_mount_options { 91 char *nls_name; 92 struct nls_table *nls; 93 94 kuid_t fs_uid; 95 kgid_t fs_gid; 96 u16 fs_fmask_inv; 97 u16 fs_dmask_inv; 98 99 unsigned fmask : 1; /* fmask was set. */ 100 unsigned dmask : 1; /*dmask was set. */ 101 unsigned sys_immutable : 1; /* Immutable system files. */ 102 unsigned discard : 1; /* Issue discard requests on deletions. */ 103 unsigned sparse : 1; /* Create sparse files. */ 104 unsigned showmeta : 1; /* Show meta files. */ 105 unsigned nohidden : 1; /* Do not show hidden files. */ 106 unsigned hide_dot_files : 1; /* Set hidden flag on dot files. */ 107 unsigned windows_names : 1; /* Disallow names forbidden by Windows. */ 108 unsigned force : 1; /* RW mount dirty volume. */ 109 unsigned prealloc : 1; /* Preallocate space when file is growing. */ 110 unsigned nocase : 1; /* case insensitive. */ 111 }; 112 113 /* Special value to unpack and deallocate. */ 114 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) 115 116 /* TODO: Use rb tree instead of array. */ 117 struct runs_tree { 118 struct ntfs_run *runs; 119 size_t count; /* Currently used size a ntfs_run storage. */ 120 size_t allocated; /* Currently allocated ntfs_run storage size. */ 121 }; 122 123 struct ntfs_buffers { 124 /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ 125 /* Biggest index / smallest cluster = 4096 / 512 = 8 */ 126 struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; 127 u32 bytes; 128 u32 nbufs; 129 u32 off; 130 }; 131 132 enum ALLOCATE_OPT { 133 ALLOCATE_DEF = 0, // Allocate all clusters. 134 ALLOCATE_MFT = 1, // Allocate for MFT. 135 ALLOCATE_ZERO = 2, // Zeroout new allocated clusters 136 }; 137 138 enum bitmap_mutex_classes { 139 BITMAP_MUTEX_CLUSTERS = 0, 140 BITMAP_MUTEX_MFT = 1, 141 }; 142 143 struct wnd_bitmap { 144 struct super_block *sb; 145 struct rw_semaphore rw_lock; 146 147 struct runs_tree run; 148 size_t nbits; 149 150 size_t total_zeroes; // Total number of free bits. 151 u16 *free_bits; // Free bits in each window. 152 size_t nwnd; 153 u32 bits_last; // Bits in last window. 154 155 struct rb_root start_tree; // Extents, sorted by 'start'. 156 struct rb_root count_tree; // Extents, sorted by 'count + start'. 157 size_t count; // Extents count. 158 159 /* 160 * -1 Tree is activated but not updated (too many fragments). 161 * 0 - Tree is not activated. 162 * 1 - Tree is activated and updated. 163 */ 164 int uptodated; 165 size_t extent_min; // Minimal extent used while building. 166 size_t extent_max; // Upper estimate of biggest free block. 167 168 /* Zone [bit, end) */ 169 size_t zone_bit; 170 size_t zone_end; 171 172 bool inited; 173 }; 174 175 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, 176 size_t len2, const void *param); 177 178 enum index_mutex_classed { 179 INDEX_MUTEX_I30 = 0, 180 INDEX_MUTEX_SII = 1, 181 INDEX_MUTEX_SDH = 2, 182 INDEX_MUTEX_SO = 3, 183 INDEX_MUTEX_SQ = 4, 184 INDEX_MUTEX_SR = 5, 185 INDEX_MUTEX_TOTAL 186 }; 187 188 /* ntfs_index - Allocation unit inside directory. */ 189 struct ntfs_index { 190 struct runs_tree bitmap_run; 191 struct runs_tree alloc_run; 192 /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ 193 struct rw_semaphore run_lock; 194 195 /*TODO: Remove 'cmp'. */ 196 NTFS_CMP_FUNC cmp; 197 198 u8 index_bits; // log2(root->index_block_size) 199 u8 idx2vbn_bits; // log2(root->index_block_clst) 200 u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits 201 u8 type; // index_mutex_classed 202 }; 203 204 /* Minimum MFT zone. */ 205 #define NTFS_MIN_MFT_ZONE 100 206 /* Step to increase the MFT. */ 207 #define NTFS_MFT_INCREASE_STEP 1024 208 209 /* Ntfs file system in-core superblock data. */ 210 struct ntfs_sb_info { 211 struct super_block *sb; 212 213 u32 discard_granularity; 214 u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) 215 216 u32 cluster_size; // bytes per cluster 217 u32 cluster_mask; // == cluster_size - 1 218 u64 cluster_mask_inv; // ~(cluster_size - 1) 219 u32 block_mask; // sb->s_blocksize - 1 220 u32 blocks_per_cluster; // cluster_size / sb->s_blocksize 221 222 u32 record_size; 223 u32 index_size; 224 225 u8 cluster_bits; 226 u8 record_bits; 227 228 u64 maxbytes; // Maximum size for normal files. 229 u64 maxbytes_sparse; // Maximum size for sparse file. 230 231 unsigned long flags; // See NTFS_FLAGS_ 232 233 CLST zone_max; // Maximum MFT zone length in clusters 234 CLST bad_clusters; // The count of marked bad clusters. 235 236 u16 max_bytes_per_attr; // Maximum attribute size in record. 237 u16 attr_size_tr; // Attribute size threshold (320 bytes). 238 239 /* Records in $Extend. */ 240 CLST objid_no; 241 CLST quota_no; 242 CLST reparse_no; 243 CLST usn_jrnl_no; 244 245 struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. 246 u32 def_entries; 247 u32 ea_max_size; 248 249 struct MFT_REC *new_rec; 250 251 u16 *upcase; 252 253 struct { 254 u64 lbo, lbo2; 255 struct ntfs_inode *ni; 256 struct wnd_bitmap bitmap; // $MFT::Bitmap 257 /* 258 * MFT records [11-24) used to expand MFT itself. 259 * They always marked as used in $MFT::Bitmap 260 * 'reserved_bitmap' contains real bitmap of these records. 261 */ 262 ulong reserved_bitmap; // Bitmap of used records [11 - 24) 263 size_t next_free; // The next record to allocate from 264 size_t used; // MFT valid size in records. 265 u32 recs_mirr; // Number of records in MFTMirr 266 u8 next_reserved; 267 u8 reserved_bitmap_inited; 268 } mft; 269 270 struct { 271 struct wnd_bitmap bitmap; // $Bitmap::Data 272 CLST next_free_lcn; 273 } used; 274 275 struct { 276 u64 size; // In bytes. 277 u64 blocks; // In blocks. 278 u64 ser_num; 279 struct ntfs_inode *ni; 280 __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. 281 u8 major_ver; 282 u8 minor_ver; 283 char label[256]; 284 bool real_dirty; // Real fs state. 285 } volume; 286 287 struct { 288 struct ntfs_index index_sii; 289 struct ntfs_index index_sdh; 290 struct ntfs_inode *ni; 291 u32 next_id; 292 u64 next_off; 293 __le32 def_security_id; 294 } security; 295 296 struct { 297 struct ntfs_index index_r; 298 struct ntfs_inode *ni; 299 u64 max_size; // 16K 300 } reparse; 301 302 struct { 303 struct ntfs_index index_o; 304 struct ntfs_inode *ni; 305 } objid; 306 307 struct { 308 struct mutex mtx_lznt; 309 struct lznt *lznt; 310 #ifdef CONFIG_NTFS3_LZX_XPRESS 311 struct mutex mtx_xpress; 312 struct xpress_decompressor *xpress; 313 struct mutex mtx_lzx; 314 struct lzx_decompressor *lzx; 315 #endif 316 } compress; 317 318 struct ntfs_mount_options *options; 319 struct ratelimit_state msg_ratelimit; 320 struct proc_dir_entry *procdir; 321 }; 322 323 /* One MFT record(usually 1024 bytes), consists of attributes. */ 324 struct mft_inode { 325 struct rb_node node; 326 struct ntfs_sb_info *sbi; 327 328 struct MFT_REC *mrec; 329 struct ntfs_buffers nb; 330 331 CLST rno; 332 bool dirty; 333 }; 334 335 /* Nested class for ntfs_inode::ni_lock. */ 336 enum ntfs_inode_mutex_lock_class { 337 NTFS_INODE_MUTEX_DIRTY, 338 NTFS_INODE_MUTEX_SECURITY, 339 NTFS_INODE_MUTEX_OBJID, 340 NTFS_INODE_MUTEX_REPARSE, 341 NTFS_INODE_MUTEX_NORMAL, 342 NTFS_INODE_MUTEX_PARENT, 343 NTFS_INODE_MUTEX_PARENT2, 344 }; 345 346 /* 347 * struct ntfs_inode 348 * 349 * Ntfs inode - extends linux inode. consists of one or more MFT inodes. 350 */ 351 struct ntfs_inode { 352 struct mft_inode mi; // base record 353 354 /* 355 * Valid size: [0 - i_valid) - these range in file contains valid data. 356 * Range [i_valid - inode->i_size) - contains 0. 357 * Usually i_valid <= inode->i_size. 358 */ 359 u64 i_valid; 360 struct timespec64 i_crtime; 361 362 struct mutex ni_lock; 363 364 /* File attributes from std. */ 365 enum FILE_ATTRIBUTE std_fa; 366 __le32 std_security_id; 367 368 /* 369 * Tree of mft_inode. 370 * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes 371 * e.g. file becomes too fragmented or contains a lot of names. 372 */ 373 struct rb_root mi_tree; 374 375 /* 376 * This member is used in ntfs_readdir to ensure that all subrecords are loaded 377 */ 378 u8 mi_loaded; 379 380 union { 381 struct ntfs_index dir; 382 struct { 383 struct rw_semaphore run_lock; 384 struct runs_tree run; 385 #ifdef CONFIG_NTFS3_LZX_XPRESS 386 struct 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 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, 451 u64 new_valid); 452 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 453 int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); 454 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); 455 456 /* Functions from attrlist.c */ 457 void al_destroy(struct ntfs_inode *ni); 458 bool al_verify(struct ntfs_inode *ni); 459 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); 460 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, 461 struct ATTR_LIST_ENTRY *le); 462 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, 463 struct ATTR_LIST_ENTRY *le, 464 const struct ATTRIB *attr); 465 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, 466 struct ATTR_LIST_ENTRY *le, 467 enum ATTR_TYPE type, const __le16 *name, 468 u8 name_len, const CLST *vcn); 469 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, 470 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, 471 struct ATTR_LIST_ENTRY **new_le); 472 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); 473 bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, 474 const __le16 *name, u8 name_len, const struct MFT_REF *ref); 475 int al_update(struct ntfs_inode *ni, int sync); 476 static inline size_t al_aligned(size_t size) 477 { 478 return size_add(size, 1023) & ~(size_t)1023; 479 } 480 481 /* Globals from bitfunc.c */ 482 bool are_bits_clear(const void *map, size_t bit, size_t nbits); 483 bool are_bits_set(const void *map, size_t bit, size_t nbits); 484 size_t get_set_bits_ex(const void *map, size_t bit, size_t nbits); 485 486 /* Globals from dir.c */ 487 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, 488 u8 *buf, int buf_len); 489 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, 490 struct cpu_str *uni, u32 max_ulen, 491 enum utf16_endian endian); 492 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, 493 struct ntfs_fnd *fnd); 494 bool dir_is_empty(struct inode *dir); 495 extern const struct file_operations ntfs_dir_operations; 496 497 /* Globals from file.c */ 498 int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, 499 struct kstat *stat, u32 request_mask, u32 flags); 500 int ntfs3_setattr(struct mnt_idmap *idmap, struct dentry *dentry, 501 struct iattr *attr); 502 int ntfs_file_open(struct inode *inode, struct file *file); 503 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, 504 __u64 start, __u64 len); 505 extern const struct inode_operations ntfs_special_inode_operations; 506 extern const struct inode_operations ntfs_file_inode_operations; 507 extern const struct file_operations ntfs_file_operations; 508 509 /* Globals from frecord.c */ 510 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); 511 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); 512 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); 513 void ni_clear(struct ntfs_inode *ni); 514 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 515 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, 516 struct mft_inode **mi); 517 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, 518 struct ATTR_LIST_ENTRY **entry_o, 519 enum ATTR_TYPE type, const __le16 *name, 520 u8 name_len, const CLST *vcn, 521 struct mft_inode **mi); 522 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, 523 struct ATTR_LIST_ENTRY **le, 524 struct mft_inode **mi); 525 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 526 const __le16 *name, u8 name_len, CLST vcn, 527 struct mft_inode **pmi); 528 int ni_load_all_mi(struct ntfs_inode *ni); 529 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); 530 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, 531 const __le16 *name, u8 name_len, bool base_only, 532 const __le16 *id); 533 int ni_create_attr_list(struct ntfs_inode *ni); 534 int ni_expand_list(struct ntfs_inode *ni); 535 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, 536 const __le16 *name, u8 name_len, 537 const struct runs_tree *run, CLST svcn, CLST len, 538 __le16 flags, struct ATTRIB **new_attr, 539 struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); 540 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, 541 enum ATTR_TYPE type, const __le16 *name, u8 name_len, 542 struct ATTRIB **new_attr, struct mft_inode **mi, 543 struct ATTR_LIST_ENTRY **le); 544 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, 545 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); 546 int ni_delete_all(struct ntfs_inode *ni); 547 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, 548 const struct le_str *uni, 549 const struct MFT_REF *home, 550 struct mft_inode **mi, 551 struct ATTR_LIST_ENTRY **entry); 552 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, 553 struct mft_inode **mi, 554 struct ATTR_LIST_ENTRY **entry); 555 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); 556 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, 557 struct REPARSE_DATA_BUFFER *buffer); 558 int ni_write_inode(struct inode *inode, int sync, const char *hint); 559 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) 560 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, 561 __u64 vbo, __u64 len); 562 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); 563 int ni_decompress_file(struct ntfs_inode *ni); 564 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, 565 u32 pages_per_frame); 566 int ni_write_frame(struct ntfs_inode *ni, struct page **pages, 567 u32 pages_per_frame); 568 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 569 struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); 570 571 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 572 struct NTFS_DE *de, struct NTFS_DE *de2, 573 int undo_step); 574 575 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, 576 struct NTFS_DE *de); 577 578 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, 579 struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, 580 bool *is_bad); 581 582 bool ni_is_dirty(struct inode *inode); 583 584 /* Globals from fslog.c */ 585 bool check_index_header(const struct INDEX_HDR *hdr, size_t bytes); 586 int log_replay(struct ntfs_inode *ni, bool *initialized); 587 588 /* Globals from fsntfs.c */ 589 struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block); 590 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); 591 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, 592 bool simple); 593 int ntfs_extend_init(struct ntfs_sb_info *sbi); 594 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); 595 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, 596 CLST *new_lcn, CLST *new_len, 597 enum ALLOCATE_OPT opt); 598 bool ntfs_check_for_free_space(struct ntfs_sb_info *sbi, CLST clen, CLST mlen); 599 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, 600 struct ntfs_inode *ni, struct mft_inode **mi); 601 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); 602 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); 603 int ntfs_refresh_zone(struct ntfs_sb_info *sbi); 604 void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); 605 void ntfs_bad_inode(struct inode *inode, const char *hint); 606 #define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) 607 enum NTFS_DIRTY_FLAGS { 608 NTFS_DIRTY_CLEAR = 0, 609 NTFS_DIRTY_DIRTY = 1, 610 NTFS_DIRTY_ERROR = 2, 611 }; 612 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); 613 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); 614 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, 615 const void *buffer, int wait); 616 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, 617 u64 vbo, const void *buf, size_t bytes, int sync); 618 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, 619 const struct runs_tree *run, u64 vbo); 620 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, 621 u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); 622 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 623 struct NTFS_RECORD_HEADER *rhdr, u32 bytes, 624 struct ntfs_buffers *nb); 625 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, 626 u32 bytes, struct ntfs_buffers *nb); 627 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, 628 struct ntfs_buffers *nb, int sync); 629 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, 630 struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, 631 enum req_op op); 632 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); 633 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, 634 u64 vbo, u64 *lbo, u64 *bytes); 635 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, 636 enum RECORD_FLAG flag); 637 extern const u8 s_default_security[0x50]; 638 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); 639 int ntfs_security_init(struct ntfs_sb_info *sbi); 640 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, 641 struct SECURITY_DESCRIPTOR_RELATIVE **sd, 642 size_t *size); 643 int ntfs_insert_security(struct ntfs_sb_info *sbi, 644 const struct SECURITY_DESCRIPTOR_RELATIVE *sd, 645 u32 size, __le32 *security_id, bool *inserted); 646 int ntfs_reparse_init(struct ntfs_sb_info *sbi); 647 int ntfs_objid_init(struct ntfs_sb_info *sbi); 648 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); 649 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 650 const struct MFT_REF *ref); 651 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, 652 const struct MFT_REF *ref); 653 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); 654 int run_deallocate(struct ntfs_sb_info *sbi, const struct runs_tree *run, 655 bool trim); 656 bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name); 657 int ntfs_set_label(struct ntfs_sb_info *sbi, u8 *label, int len); 658 659 /* Globals from index.c */ 660 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); 661 void fnd_clear(struct ntfs_fnd *fnd); 662 static inline struct ntfs_fnd *fnd_get(void) 663 { 664 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); 665 } 666 static inline void fnd_put(struct ntfs_fnd *fnd) 667 { 668 if (fnd) { 669 fnd_clear(fnd); 670 kfree(fnd); 671 } 672 } 673 void indx_clear(struct ntfs_index *idx); 674 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, 675 const struct ATTRIB *attr, enum index_mutex_classed type); 676 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, 677 struct ATTRIB **attr, struct mft_inode **mi); 678 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, 679 struct indx_node **node); 680 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, 681 const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, 682 const void *param, int *diff, struct NTFS_DE **entry, 683 struct ntfs_fnd *fnd); 684 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, 685 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 686 struct ntfs_fnd *fnd); 687 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, 688 const struct INDEX_ROOT *root, struct NTFS_DE **entry, 689 size_t *off, struct ntfs_fnd *fnd); 690 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 691 const struct NTFS_DE *new_de, const void *param, 692 struct ntfs_fnd *fnd, bool undo); 693 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, 694 const void *key, u32 key_len, const void *param); 695 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, 696 const struct ATTR_FILE_NAME *fname, 697 const struct NTFS_DUP_INFO *dup, int sync); 698 699 /* Globals from inode.c */ 700 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, 701 const struct cpu_str *name); 702 int ntfs_set_size(struct inode *inode, u64 new_size); 703 int reset_log_file(struct inode *inode); 704 int ntfs_get_block(struct inode *inode, sector_t vbn, 705 struct buffer_head *bh_result, int create); 706 int ntfs_write_begin(struct file *file, struct address_space *mapping, 707 loff_t pos, u32 len, struct page **pagep, void **fsdata); 708 int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos, 709 u32 len, u32 copied, struct page *page, void *fsdata); 710 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); 711 int ntfs_sync_inode(struct inode *inode); 712 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, 713 struct inode *i2); 714 int inode_write_data(struct inode *inode, const void *data, size_t bytes); 715 struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir, 716 struct dentry *dentry, 717 const struct cpu_str *uni, umode_t mode, 718 dev_t dev, const char *symname, u32 size, 719 struct ntfs_fnd *fnd); 720 int ntfs_link_inode(struct inode *inode, struct dentry *dentry); 721 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); 722 void ntfs_evict_inode(struct inode *inode); 723 extern const struct inode_operations ntfs_link_inode_operations; 724 extern const struct address_space_operations ntfs_aops; 725 extern const struct address_space_operations ntfs_aops_cmpr; 726 727 /* Globals from name_i.c */ 728 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, 729 const struct cpu_str *uni); 730 struct dentry *ntfs3_get_parent(struct dentry *child); 731 732 extern const struct inode_operations ntfs_dir_inode_operations; 733 extern const struct inode_operations ntfs_special_inode_operations; 734 extern const struct dentry_operations ntfs_dentry_ops; 735 736 /* Globals from record.c */ 737 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); 738 void mi_put(struct mft_inode *mi); 739 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); 740 int mi_read(struct mft_inode *mi, bool is_mft); 741 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); 742 // TODO: id? 743 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, 744 enum ATTR_TYPE type, const __le16 *name, 745 u8 name_len, const __le16 *id); 746 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, 747 struct ATTR_LIST_ENTRY *le) 748 { 749 return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, 750 &le->id); 751 } 752 int mi_write(struct mft_inode *mi, int wait); 753 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, 754 __le16 flags, bool is_mft); 755 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, 756 const __le16 *name, u8 name_len, u32 asize, 757 u16 name_off); 758 759 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, 760 struct ATTRIB *attr); 761 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); 762 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, 763 struct runs_tree *run, CLST len); 764 static inline bool mi_is_ref(const struct mft_inode *mi, 765 const struct MFT_REF *ref) 766 { 767 if (le32_to_cpu(ref->low) != mi->rno) 768 return false; 769 if (ref->seq != mi->mrec->seq) 770 return false; 771 772 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 773 return le16_to_cpu(ref->high) == (mi->rno >> 32); 774 #else 775 return !ref->high; 776 #endif 777 } 778 779 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) 780 { 781 ref->low = cpu_to_le32(mi->rno); 782 #ifdef CONFIG_NTFS3_64BIT_CLUSTER 783 ref->high = cpu_to_le16(mi->rno >> 32); 784 #else 785 ref->high = 0; 786 #endif 787 ref->seq = mi->mrec->seq; 788 } 789 790 /* Globals from run.c */ 791 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, 792 CLST *len, size_t *index); 793 void run_truncate(struct runs_tree *run, CLST vcn); 794 void run_truncate_head(struct runs_tree *run, CLST vcn); 795 void run_truncate_around(struct runs_tree *run, CLST vcn); 796 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, 797 bool is_mft); 798 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); 799 bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); 800 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, 801 CLST *lcn, CLST *len); 802 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); 803 804 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, 805 u32 run_buf_size, CLST *packed_vcns); 806 int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 807 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 808 int run_buf_size); 809 810 #ifdef NTFS3_CHECK_FREE_CLST 811 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, 812 CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, 813 int run_buf_size); 814 #else 815 #define run_unpack_ex run_unpack 816 #endif 817 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); 818 int run_clone(const struct runs_tree *run, struct runs_tree *new_run); 819 820 /* Globals from super.c */ 821 void *ntfs_set_shared(void *ptr, u32 bytes); 822 void *ntfs_put_shared(void *ptr); 823 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); 824 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); 825 826 /* Globals from bitmap.c*/ 827 int __init ntfs3_init_bitmap(void); 828 void ntfs3_exit_bitmap(void); 829 void wnd_close(struct wnd_bitmap *wnd); 830 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) 831 { 832 return wnd->total_zeroes; 833 } 834 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); 835 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 836 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 837 int wnd_set_used_safe(struct wnd_bitmap *wnd, size_t bit, size_t bits, 838 size_t *done); 839 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); 840 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); 841 842 /* Possible values for 'flags' 'wnd_find'. */ 843 #define BITMAP_FIND_MARK_AS_USED 0x01 844 #define BITMAP_FIND_FULL 0x02 845 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, 846 size_t flags, size_t *allocated); 847 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); 848 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); 849 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); 850 851 void ntfs_bitmap_set_le(void *map, unsigned int start, int len); 852 void ntfs_bitmap_clear_le(void *map, unsigned int start, int len); 853 unsigned int ntfs_bitmap_weight_le(const void *bitmap, int bits); 854 855 /* Globals from upcase.c */ 856 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, 857 const u16 *upcase, bool bothcase); 858 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, 859 const u16 *upcase, bool bothcase); 860 unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase, 861 unsigned long hash); 862 863 /* globals from xattr.c */ 864 #ifdef CONFIG_NTFS3_FS_POSIX_ACL 865 struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, 866 int type); 867 int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, 868 struct posix_acl *acl, int type); 869 int ntfs_init_acl(struct mnt_idmap *idmap, struct inode *inode, 870 struct inode *dir); 871 #else 872 #define ntfs_get_acl NULL 873 #define ntfs_set_acl NULL 874 #endif 875 876 int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry); 877 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); 878 extern const struct xattr_handler *ntfs_xattr_handlers[]; 879 880 int ntfs_save_wsl_perm(struct inode *inode, __le16 *ea_size); 881 void ntfs_get_wsl_perm(struct inode *inode); 882 883 /* globals from lznt.c */ 884 struct lznt *get_lznt_ctx(int level); 885 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, 886 void *compressed, size_t compressed_size, 887 struct lznt *ctx); 888 ssize_t decompress_lznt(const void *compressed, size_t compressed_size, 889 void *uncompressed, size_t uncompressed_size); 890 891 static inline bool is_ntfs3(struct ntfs_sb_info *sbi) 892 { 893 return sbi->volume.major_ver >= 3; 894 } 895 896 /* (sb->s_flags & SB_ACTIVE) */ 897 static inline bool is_mounted(struct ntfs_sb_info *sbi) 898 { 899 return !!sbi->sb->s_root; 900 } 901 902 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) 903 { 904 return rno < MFT_REC_FREE || rno == sbi->objid_no || 905 rno == sbi->quota_no || rno == sbi->reparse_no || 906 rno == sbi->usn_jrnl_no; 907 } 908 909 static inline void ntfs_unmap_page(struct page *page) 910 { 911 kunmap(page); 912 put_page(page); 913 } 914 915 static inline struct page *ntfs_map_page(struct address_space *mapping, 916 unsigned long index) 917 { 918 struct page *page = read_mapping_page(mapping, index, NULL); 919 920 if (!IS_ERR(page)) 921 kmap(page); 922 return page; 923 } 924 925 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) 926 { 927 return wnd->zone_bit; 928 } 929 930 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) 931 { 932 return wnd->zone_end - wnd->zone_bit; 933 } 934 935 static inline void run_init(struct runs_tree *run) 936 { 937 run->runs = NULL; 938 run->count = 0; 939 run->allocated = 0; 940 } 941 942 static inline struct runs_tree *run_alloc(void) 943 { 944 return kzalloc(sizeof(struct runs_tree), GFP_NOFS); 945 } 946 947 static inline void run_close(struct runs_tree *run) 948 { 949 kvfree(run->runs); 950 memset(run, 0, sizeof(*run)); 951 } 952 953 static inline void run_free(struct runs_tree *run) 954 { 955 if (run) { 956 kvfree(run->runs); 957 kfree(run); 958 } 959 } 960 961 static inline bool run_is_empty(struct runs_tree *run) 962 { 963 return !run->count; 964 } 965 966 /* NTFS uses quad aligned bitmaps. */ 967 static inline size_t ntfs3_bitmap_size(size_t bits) 968 { 969 return BITS_TO_U64(bits) * sizeof(u64); 970 } 971 972 #define _100ns2seconds 10000000 973 #define SecondsToStartOf1970 0x00000002B6109100 974 975 #define NTFS_TIME_GRAN 100 976 977 /* 978 * kernel2nt - Converts in-memory kernel timestamp into nt time. 979 */ 980 static inline __le64 kernel2nt(const struct timespec64 *ts) 981 { 982 // 10^7 units of 100 nanoseconds one second 983 return cpu_to_le64(_100ns2seconds * 984 (ts->tv_sec + SecondsToStartOf1970) + 985 ts->tv_nsec / NTFS_TIME_GRAN); 986 } 987 988 /* 989 * nt2kernel - Converts on-disk nt time into kernel timestamp. 990 */ 991 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) 992 { 993 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; 994 995 // WARNING: do_div changes its first argument(!) 996 ts->tv_nsec = do_div(t, _100ns2seconds) * 100; 997 ts->tv_sec = t; 998 } 999 1000 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) 1001 { 1002 return sb->s_fs_info; 1003 } 1004 1005 static inline int ntfs3_forced_shutdown(struct super_block *sb) 1006 { 1007 return test_bit(NTFS_FLAGS_SHUTDOWN_BIT, &ntfs_sb(sb)->flags); 1008 } 1009 1010 /* 1011 * ntfs_up_cluster - Align up on cluster boundary. 1012 */ 1013 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) 1014 { 1015 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; 1016 } 1017 1018 /* 1019 * ntfs_up_block - Align up on cluster boundary. 1020 */ 1021 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) 1022 { 1023 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); 1024 } 1025 1026 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) 1027 { 1028 return (size + sbi->cluster_mask) >> sbi->cluster_bits; 1029 } 1030 1031 static inline u64 bytes_to_block(const struct super_block *sb, u64 size) 1032 { 1033 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; 1034 } 1035 1036 static inline struct ntfs_inode *ntfs_i(struct inode *inode) 1037 { 1038 return container_of(inode, struct ntfs_inode, vfs_inode); 1039 } 1040 1041 static inline bool is_compressed(const struct ntfs_inode *ni) 1042 { 1043 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || 1044 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1045 } 1046 1047 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) 1048 { 1049 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); 1050 } 1051 1052 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ 1053 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) 1054 { 1055 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; 1056 } 1057 1058 static inline bool is_dedup(const struct ntfs_inode *ni) 1059 { 1060 return ni->ni_flags & NI_FLAG_DEDUPLICATED; 1061 } 1062 1063 static inline bool is_encrypted(const struct ntfs_inode *ni) 1064 { 1065 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; 1066 } 1067 1068 static inline bool is_sparsed(const struct ntfs_inode *ni) 1069 { 1070 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; 1071 } 1072 1073 static inline int is_resident(struct ntfs_inode *ni) 1074 { 1075 return ni->ni_flags & NI_FLAG_RESIDENT; 1076 } 1077 1078 static inline void le16_sub_cpu(__le16 *var, u16 val) 1079 { 1080 *var = cpu_to_le16(le16_to_cpu(*var) - val); 1081 } 1082 1083 static inline void le32_sub_cpu(__le32 *var, u32 val) 1084 { 1085 *var = cpu_to_le32(le32_to_cpu(*var) - val); 1086 } 1087 1088 static inline void nb_put(struct ntfs_buffers *nb) 1089 { 1090 u32 i, nbufs = nb->nbufs; 1091 1092 if (!nbufs) 1093 return; 1094 1095 for (i = 0; i < nbufs; i++) 1096 put_bh(nb->bh[i]); 1097 nb->nbufs = 0; 1098 } 1099 1100 static inline void put_indx_node(struct indx_node *in) 1101 { 1102 if (!in) 1103 return; 1104 1105 kfree(in->index); 1106 nb_put(&in->nb); 1107 kfree(in); 1108 } 1109 1110 static inline void mi_clear(struct mft_inode *mi) 1111 { 1112 nb_put(&mi->nb); 1113 kfree(mi->mrec); 1114 mi->mrec = NULL; 1115 } 1116 1117 static inline void ni_lock(struct ntfs_inode *ni) 1118 { 1119 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); 1120 } 1121 1122 static inline void ni_lock_dir(struct ntfs_inode *ni) 1123 { 1124 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); 1125 } 1126 1127 static inline void ni_lock_dir2(struct ntfs_inode *ni) 1128 { 1129 mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT2); 1130 } 1131 1132 static inline void ni_unlock(struct ntfs_inode *ni) 1133 { 1134 mutex_unlock(&ni->ni_lock); 1135 } 1136 1137 static inline int ni_trylock(struct ntfs_inode *ni) 1138 { 1139 return mutex_trylock(&ni->ni_lock); 1140 } 1141 1142 static inline int attr_load_runs_attr(struct ntfs_inode *ni, 1143 struct ATTRIB *attr, 1144 struct runs_tree *run, CLST vcn) 1145 { 1146 return attr_load_runs_vcn(ni, attr->type, attr_name(attr), 1147 attr->name_len, run, vcn); 1148 } 1149 1150 static inline void le64_sub_cpu(__le64 *var, u64 val) 1151 { 1152 *var = cpu_to_le64(le64_to_cpu(*var) - val); 1153 } 1154 1155 #endif /* _LINUX_NTFS3_NTFS_FS_H */ 1156