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
34struct dentry;
35struct fiemap_extent_info;
36struct user_namespace;
37struct page;
38struct writeback_control;
39enum 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
90struct 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. */
117struct 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
123struct 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
132enum 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
138enum bitmap_mutex_classes {
139 BITMAP_MUTEX_CLUSTERS = 0,
140 BITMAP_MUTEX_MFT = 1,
141};
142
143struct 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
175typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2,
176 size_t len2, const void *param);
177
178enum 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. */
189struct 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. */
210struct 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. */
324struct 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. */
336enum 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 */
351struct 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 folio *offs_folio;
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
403struct indx_node {
404 struct ntfs_buffers nb;
405 struct INDEX_BUFFER *index;
406};
407
408struct 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
415enum 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 */
423int 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);
427int 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);
431int 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);
435int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn,
436 CLST *len, bool *new, bool zero);
437int attr_data_read_resident(struct ntfs_inode *ni, struct folio *folio);
438int attr_data_write_resident(struct ntfs_inode *ni, struct folio *folio);
439int 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);
442int 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);
445int 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);
448int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr,
449 CLST frame, CLST *clst_data,
450 struct runs_tree *run);
451int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size,
452 u64 new_valid);
453int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes);
454int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes);
455int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size);
456int attr_force_nonresident(struct ntfs_inode *ni);
457
458/* Functions from attrlist.c */
459void al_destroy(struct ntfs_inode *ni);
460bool al_verify(struct ntfs_inode *ni);
461int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr);
462struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni,
463 struct ATTR_LIST_ENTRY *le);
464struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni,
465 struct ATTR_LIST_ENTRY *le,
466 const struct ATTRIB *attr);
467struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni,
468 struct ATTR_LIST_ENTRY *le,
469 enum ATTR_TYPE type, const __le16 *name,
470 u8 name_len, const CLST *vcn);
471int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name,
472 u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref,
473 struct ATTR_LIST_ENTRY **new_le);
474bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le);
475int al_update(struct ntfs_inode *ni, int sync);
476static inline size_t al_aligned(size_t size)
477{
478 return size_add(addend1: size, addend2: 1023) & ~(size_t)1023;
479}
480
481/* Globals from bitfunc.c */
482bool are_bits_clear(const void *map, size_t bit, size_t nbits);
483bool are_bits_set(const void *map, size_t bit, size_t nbits);
484size_t get_set_bits_ex(const void *map, size_t bit, size_t nbits);
485
486/* Globals from dir.c */
487int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len,
488 u8 *buf, int buf_len);
489int 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);
492struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni,
493 struct ntfs_fnd *fnd);
494bool dir_is_empty(struct inode *dir);
495extern const struct file_operations ntfs_dir_operations;
496extern const struct file_operations ntfs_legacy_dir_operations;
497
498/* Globals from file.c */
499int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path,
500 struct kstat *stat, u32 request_mask, u32 flags);
501int ntfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
502 struct iattr *attr);
503int ntfs_file_open(struct inode *inode, struct file *file);
504int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
505 __u64 start, __u64 len);
506long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg);
507long ntfs_compat_ioctl(struct file *filp, u32 cmd, unsigned long arg);
508extern const struct inode_operations ntfs_special_inode_operations;
509extern const struct inode_operations ntfs_file_inode_operations;
510extern const struct file_operations ntfs_file_operations;
511extern const struct file_operations ntfs_legacy_file_operations;
512
513/* Globals from frecord.c */
514void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi);
515struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni);
516struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni);
517void ni_clear(struct ntfs_inode *ni);
518int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi);
519int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le,
520 struct mft_inode **mi);
521struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr,
522 struct ATTR_LIST_ENTRY **entry_o,
523 enum ATTR_TYPE type, const __le16 *name,
524 u8 name_len, const CLST *vcn,
525 struct mft_inode **mi);
526struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr,
527 struct ATTR_LIST_ENTRY **le,
528 struct mft_inode **mi);
529int ni_load_all_mi(struct ntfs_inode *ni);
530bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi);
531int 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);
534int ni_create_attr_list(struct ntfs_inode *ni);
535int ni_expand_list(struct ntfs_inode *ni);
536int 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);
541int 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);
545void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr,
546 struct mft_inode *mi, struct ATTR_LIST_ENTRY *le);
547int ni_delete_all(struct ntfs_inode *ni);
548struct 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);
553struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type,
554 struct mft_inode **mi,
555 struct ATTR_LIST_ENTRY **entry);
556int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa);
557enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr,
558 struct REPARSE_DATA_BUFFER *buffer);
559int ni_write_inode(struct inode *inode, int sync, const char *hint);
560#define _ni_write_inode(i, w) ni_write_inode(i, w, __func__)
561int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
562 __u64 vbo, __u64 len);
563int ni_readpage_cmpr(struct ntfs_inode *ni, struct folio *folio);
564int ni_decompress_file(struct ntfs_inode *ni);
565int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages,
566 u32 pages_per_frame);
567int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
568 u32 pages_per_frame);
569int 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
572bool 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
576int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
577 struct NTFS_DE *de);
578
579int 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
583bool ni_is_dirty(struct inode *inode);
584
585/* Globals from fslog.c */
586bool check_index_header(const struct INDEX_HDR *hdr, size_t bytes);
587int log_replay(struct ntfs_inode *ni, bool *initialized);
588
589/* Globals from fsntfs.c */
590struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block);
591bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes);
592int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes,
593 bool simple);
594int ntfs_extend_init(struct ntfs_sb_info *sbi);
595int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi);
596int 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);
599bool ntfs_check_for_free_space(struct ntfs_sb_info *sbi, CLST clen, CLST mlen);
600int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft,
601 struct ntfs_inode *ni, struct mft_inode **mi);
602void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft);
603int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to);
604int ntfs_refresh_zone(struct ntfs_sb_info *sbi);
605void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait);
606void ntfs_bad_inode(struct inode *inode, const char *hint);
607#define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__)
608enum NTFS_DIRTY_FLAGS {
609 NTFS_DIRTY_CLEAR = 0,
610 NTFS_DIRTY_DIRTY = 1,
611 NTFS_DIRTY_ERROR = 2,
612};
613int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty);
614int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes,
615 const void *buffer, int wait);
616int 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);
618struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi,
619 const struct runs_tree *run, u64 vbo);
620int 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);
622int 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);
625int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo,
626 u32 bytes, struct ntfs_buffers *nb);
627int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr,
628 struct ntfs_buffers *nb, int sync);
629int 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);
632int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run);
633int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run,
634 u64 vbo, u64 *lbo, u64 *bytes);
635struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec,
636 enum RECORD_FLAG flag);
637extern const u8 s_default_security[0x50];
638bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len);
639int ntfs_security_init(struct ntfs_sb_info *sbi);
640int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id,
641 struct SECURITY_DESCRIPTOR_RELATIVE **sd,
642 size_t *size);
643int ntfs_insert_security(struct ntfs_sb_info *sbi,
644 const struct SECURITY_DESCRIPTOR_RELATIVE *sd,
645 u32 size, __le32 *security_id, bool *inserted);
646int ntfs_reparse_init(struct ntfs_sb_info *sbi);
647int ntfs_objid_init(struct ntfs_sb_info *sbi);
648int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid);
649int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
650 const struct MFT_REF *ref);
651int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
652 const struct MFT_REF *ref);
653void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim);
654int run_deallocate(struct ntfs_sb_info *sbi, const struct runs_tree *run,
655 bool trim);
656bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name);
657int ntfs_set_label(struct ntfs_sb_info *sbi, u8 *label, int len);
658
659/* Globals from index.c */
660int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit);
661void fnd_clear(struct ntfs_fnd *fnd);
662static inline struct ntfs_fnd *fnd_get(void)
663{
664 return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS);
665}
666static inline void fnd_put(struct ntfs_fnd *fnd)
667{
668 if (fnd) {
669 fnd_clear(fnd);
670 kfree(objp: fnd);
671 }
672}
673void indx_clear(struct ntfs_index *idx);
674int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi,
675 const struct ATTRIB *attr, enum index_mutex_classed type);
676struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni,
677 struct ATTRIB **attr, struct mft_inode **mi);
678int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn,
679 struct indx_node **node);
680int 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);
684int 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);
687int 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);
690int 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);
693int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
694 const void *key, u32 key_len, const void *param);
695int 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 */
700struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref,
701 const struct cpu_str *name);
702int ntfs_set_size(struct inode *inode, u64 new_size);
703int ntfs_get_block(struct inode *inode, sector_t vbn,
704 struct buffer_head *bh_result, int create);
705int ntfs_write_begin(struct file *file, struct address_space *mapping,
706 loff_t pos, u32 len, struct folio **foliop, void **fsdata);
707int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos,
708 u32 len, u32 copied, struct folio *folio, void *fsdata);
709int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc);
710int ntfs_sync_inode(struct inode *inode);
711int inode_read_data(struct inode *inode, void *data, size_t bytes);
712int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
713 struct dentry *dentry, const struct cpu_str *uni,
714 umode_t mode, dev_t dev, const char *symname, u32 size,
715 struct ntfs_fnd *fnd);
716int ntfs_link_inode(struct inode *inode, struct dentry *dentry);
717int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry);
718void ntfs_evict_inode(struct inode *inode);
719extern const struct inode_operations ntfs_link_inode_operations;
720extern const struct address_space_operations ntfs_aops;
721extern const struct address_space_operations ntfs_aops_cmpr;
722
723/* Globals from name_i.c */
724int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name,
725 const struct cpu_str *uni);
726struct dentry *ntfs3_get_parent(struct dentry *child);
727
728extern const struct inode_operations ntfs_dir_inode_operations;
729extern const struct inode_operations ntfs_special_inode_operations;
730extern const struct dentry_operations ntfs_dentry_ops;
731
732/* Globals from record.c */
733int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi);
734void mi_put(struct mft_inode *mi);
735int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno);
736int mi_read(struct mft_inode *mi, bool is_mft);
737struct ATTRIB *mi_enum_attr(struct ntfs_inode *ni, struct mft_inode *mi,
738 struct ATTRIB *attr);
739struct ATTRIB *mi_find_attr(struct ntfs_inode *ni, struct mft_inode *mi,
740 struct ATTRIB *attr, enum ATTR_TYPE type,
741 const __le16 *name, u8 name_len, const __le16 *id);
742static inline struct ATTRIB *rec_find_attr_le(struct ntfs_inode *ni,
743 struct mft_inode *rec,
744 struct ATTR_LIST_ENTRY *le)
745{
746 return mi_find_attr(ni, mi: rec, NULL, type: le->type, name: le_name(le), name_len: le->name_len,
747 id: &le->id);
748}
749int mi_write(struct mft_inode *mi, int wait);
750int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno,
751 __le16 flags, bool is_mft);
752struct ATTRIB *mi_insert_attr(struct ntfs_inode *ni, struct mft_inode *mi,
753 enum ATTR_TYPE type, const __le16 *name,
754 u8 name_len, u32 asize, u16 name_off);
755
756bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi,
757 struct ATTRIB *attr);
758bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes);
759int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr,
760 struct runs_tree *run, CLST len);
761static 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
776static 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 */
788bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn,
789 CLST *len, size_t *index);
790void run_truncate(struct runs_tree *run, CLST vcn);
791void run_truncate_head(struct runs_tree *run, CLST vcn);
792void run_truncate_around(struct runs_tree *run, CLST vcn);
793bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len,
794 bool is_mft);
795bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len);
796bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len);
797bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn,
798 CLST *lcn, CLST *len);
799bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn);
800
801int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf,
802 u32 run_buf_size, CLST *packed_vcns);
803int 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
808int 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
814int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn);
815int run_clone(const struct runs_tree *run, struct runs_tree *new_run);
816
817/* Globals from super.c */
818void *ntfs_set_shared(void *ptr, u32 bytes);
819void *ntfs_put_shared(void *ptr);
820void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len);
821int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len);
822
823/* Globals from bitmap.c*/
824int __init ntfs3_init_bitmap(void);
825void ntfs3_exit_bitmap(void);
826void wnd_close(struct wnd_bitmap *wnd);
827static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd)
828{
829 return wnd->total_zeroes;
830}
831int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits);
832int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits);
833int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits);
834int wnd_set_used_safe(struct wnd_bitmap *wnd, size_t bit, size_t bits,
835 size_t *done);
836bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits);
837bool 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
842size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint,
843 size_t flags, size_t *allocated);
844int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits);
845void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len);
846int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range);
847
848void ntfs_bitmap_set_le(void *map, unsigned int start, int len);
849void ntfs_bitmap_clear_le(void *map, unsigned int start, int len);
850unsigned int ntfs_bitmap_weight_le(const void *bitmap, int bits);
851
852/* Globals from upcase.c */
853int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2,
854 const u16 *upcase, bool bothcase);
855int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2,
856 const u16 *upcase, bool bothcase);
857unsigned 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
862struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry,
863 int type);
864int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
865 struct posix_acl *acl, int type);
866int 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
873int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry);
874ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
875extern const struct xattr_handler *const ntfs_xattr_handlers[];
876
877int ntfs_save_wsl_perm(struct inode *inode, __le16 *ea_size);
878void ntfs_get_wsl_perm(struct inode *inode);
879
880/* globals from lznt.c */
881struct lznt *get_lznt_ctx(int level);
882size_t compress_lznt(const void *uncompressed, size_t uncompressed_size,
883 void *compressed, size_t compressed_size,
884 struct lznt *ctx);
885ssize_t decompress_lznt(const void *compressed, size_t compressed_size,
886 void *uncompressed, size_t uncompressed_size);
887
888static 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) */
894static inline bool is_mounted(struct ntfs_sb_info *sbi)
895{
896 return !!sbi->sb->s_root;
897}
898
899static 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
906static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd)
907{
908 return wnd->zone_bit;
909}
910
911static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd)
912{
913 return wnd->zone_end - wnd->zone_bit;
914}
915
916static inline void run_init(struct runs_tree *run)
917{
918 run->runs = NULL;
919 run->count = 0;
920 run->allocated = 0;
921}
922
923static inline struct runs_tree *run_alloc(void)
924{
925 return kzalloc(sizeof(struct runs_tree), GFP_NOFS);
926}
927
928static inline void run_close(struct runs_tree *run)
929{
930 kvfree(addr: run->runs);
931 memset(run, 0, sizeof(*run));
932}
933
934static inline void run_free(struct runs_tree *run)
935{
936 if (run) {
937 kvfree(addr: run->runs);
938 kfree(objp: run);
939 }
940}
941
942static inline bool run_is_empty(struct runs_tree *run)
943{
944 return !run->count;
945}
946
947/* NTFS uses quad aligned bitmaps. */
948static inline size_t ntfs3_bitmap_size(size_t bits)
949{
950 return BITS_TO_U64(bits) * sizeof(u64);
951}
952
953#define _100ns2seconds 10000000
954#define SecondsToStartOf1970 0x00000002B6109100
955
956#define NTFS_TIME_GRAN 100
957
958/*
959 * kernel2nt - Converts in-memory kernel timestamp into nt time.
960 */
961static inline __le64 kernel2nt(const struct timespec64 *ts)
962{
963 // 10^7 units of 100 nanoseconds one second
964 return cpu_to_le64(_100ns2seconds *
965 (ts->tv_sec + SecondsToStartOf1970) +
966 ts->tv_nsec / NTFS_TIME_GRAN);
967}
968
969/*
970 * nt2kernel - Converts on-disk nt time into kernel timestamp.
971 */
972static inline void nt2kernel(const __le64 tm, struct timespec64 *ts)
973{
974 u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970;
975
976 // WARNING: do_div changes its first argument(!)
977 ts->tv_nsec = do_div(t, _100ns2seconds) * 100;
978 ts->tv_sec = t;
979}
980
981static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb)
982{
983 return sb->s_fs_info;
984}
985
986static inline int ntfs3_forced_shutdown(struct super_block *sb)
987{
988 return test_bit(NTFS_FLAGS_SHUTDOWN_BIT, &ntfs_sb(sb)->flags);
989}
990
991/*
992 * ntfs_up_cluster - Align up on cluster boundary.
993 */
994static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size)
995{
996 return (size + sbi->cluster_mask) & sbi->cluster_mask_inv;
997}
998
999/*
1000 * ntfs_up_block - Align up on cluster boundary.
1001 */
1002static inline u64 ntfs_up_block(const struct super_block *sb, u64 size)
1003{
1004 return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1);
1005}
1006
1007static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size)
1008{
1009 return (size + sbi->cluster_mask) >> sbi->cluster_bits;
1010}
1011
1012static inline u64 bytes_to_block(const struct super_block *sb, u64 size)
1013{
1014 return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1015}
1016
1017static inline struct ntfs_inode *ntfs_i(struct inode *inode)
1018{
1019 return container_of(inode, struct ntfs_inode, vfs_inode);
1020}
1021
1022static inline bool is_compressed(const struct ntfs_inode *ni)
1023{
1024 return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) ||
1025 (ni->ni_flags & NI_FLAG_COMPRESSED_MASK);
1026}
1027
1028static inline int ni_ext_compress_bits(const struct ntfs_inode *ni)
1029{
1030 return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK);
1031}
1032
1033/* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */
1034static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits)
1035{
1036 ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK;
1037}
1038
1039static inline bool is_dedup(const struct ntfs_inode *ni)
1040{
1041 return ni->ni_flags & NI_FLAG_DEDUPLICATED;
1042}
1043
1044static inline bool is_encrypted(const struct ntfs_inode *ni)
1045{
1046 return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED;
1047}
1048
1049static inline bool is_sparsed(const struct ntfs_inode *ni)
1050{
1051 return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE;
1052}
1053
1054static inline int is_resident(struct ntfs_inode *ni)
1055{
1056 return ni->ni_flags & NI_FLAG_RESIDENT;
1057}
1058
1059static inline void le16_sub_cpu(__le16 *var, u16 val)
1060{
1061 *var = cpu_to_le16(le16_to_cpu(*var) - val);
1062}
1063
1064static inline void le32_sub_cpu(__le32 *var, u32 val)
1065{
1066 *var = cpu_to_le32(le32_to_cpu(*var) - val);
1067}
1068
1069static inline void nb_put(struct ntfs_buffers *nb)
1070{
1071 u32 i, nbufs = nb->nbufs;
1072
1073 if (!nbufs)
1074 return;
1075
1076 for (i = 0; i < nbufs; i++)
1077 put_bh(bh: nb->bh[i]);
1078 nb->nbufs = 0;
1079}
1080
1081static inline void put_indx_node(struct indx_node *in)
1082{
1083 if (!in)
1084 return;
1085
1086 kfree(objp: in->index);
1087 nb_put(nb: &in->nb);
1088 kfree(objp: in);
1089}
1090
1091static inline void mi_clear(struct mft_inode *mi)
1092{
1093 nb_put(nb: &mi->nb);
1094 kfree(objp: mi->mrec);
1095 mi->mrec = NULL;
1096}
1097
1098static inline void ni_lock(struct ntfs_inode *ni)
1099{
1100 mutex_lock_nested(lock: &ni->ni_lock, subclass: NTFS_INODE_MUTEX_NORMAL);
1101}
1102
1103static inline void ni_lock_dir(struct ntfs_inode *ni)
1104{
1105 mutex_lock_nested(lock: &ni->ni_lock, subclass: NTFS_INODE_MUTEX_PARENT);
1106}
1107
1108static inline void ni_lock_dir2(struct ntfs_inode *ni)
1109{
1110 mutex_lock_nested(lock: &ni->ni_lock, subclass: NTFS_INODE_MUTEX_PARENT2);
1111}
1112
1113static inline void ni_unlock(struct ntfs_inode *ni)
1114{
1115 mutex_unlock(lock: &ni->ni_lock);
1116}
1117
1118static inline int ni_trylock(struct ntfs_inode *ni)
1119{
1120 return mutex_trylock(&ni->ni_lock);
1121}
1122
1123static inline int attr_load_runs_attr(struct ntfs_inode *ni,
1124 struct ATTRIB *attr,
1125 struct runs_tree *run, CLST vcn)
1126{
1127 return attr_load_runs_vcn(ni, type: attr->type, name: attr_name(attr),
1128 name_len: attr->name_len, run, vcn);
1129}
1130
1131static inline void le64_sub_cpu(__le64 *var, u64 val)
1132{
1133 *var = cpu_to_le64(le64_to_cpu(*var) - val);
1134}
1135
1136#if IS_ENABLED(CONFIG_NTFS_FS)
1137bool is_legacy_ntfs(struct super_block *sb);
1138#else
1139static inline bool is_legacy_ntfs(struct super_block *sb)
1140{
1141 return false;
1142}
1143#endif
1144
1145#endif /* _LINUX_NTFS3_NTFS_FS_H */
1146

source code of linux/fs/ntfs3/ntfs_fs.h