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TOMOYO Linux Cross Reference
Linux/fs/ntfs3/ntfs_fs.h

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  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/cleancache.h>
 15 #include <linux/fs.h>
 16 #include <linux/highmem.h>
 17 #include <linux/kernel.h>
 18 #include <linux/mm.h>
 19 #include <linux/mutex.h>
 20 #include <linux/page-flags.h>
 21 #include <linux/pagemap.h>
 22 #include <linux/rbtree.h>
 23 #include <linux/rwsem.h>
 24 #include <linux/slab.h>
 25 #include <linux/string.h>
 26 #include <linux/time64.h>
 27 #include <linux/types.h>
 28 #include <linux/uidgid.h>
 29 #include <asm/div64.h>
 30 #include <asm/page.h>
 31 
 32 #include "debug.h"
 33 #include "ntfs.h"
 34 
 35 struct dentry;
 36 struct fiemap_extent_info;
 37 struct user_namespace;
 38 struct page;
 39 struct writeback_control;
 40 enum utf16_endian;
 41 
 42 
 43 #define MINUS_ONE_T                     ((size_t)(-1))
 44 /* Biggest MFT / smallest cluster */
 45 #define MAXIMUM_BYTES_PER_MFT           4096
 46 #define NTFS_BLOCKS_PER_MFT_RECORD      (MAXIMUM_BYTES_PER_MFT / 512)
 47 
 48 #define MAXIMUM_BYTES_PER_INDEX         4096
 49 #define NTFS_BLOCKS_PER_INODE           (MAXIMUM_BYTES_PER_INDEX / 512)
 50 
 51 /* NTFS specific error code when fixup failed. */
 52 #define E_NTFS_FIXUP                    555
 53 /* NTFS specific error code about resident->nonresident. */
 54 #define E_NTFS_NONRESIDENT              556
 55 /* NTFS specific error code about punch hole. */
 56 #define E_NTFS_NOTALIGNED               557
 57 
 58 
 59 /* sbi->flags */
 60 #define NTFS_FLAGS_NODISCARD            0x00000001
 61 /* Set when LogFile is replaying. */
 62 #define NTFS_FLAGS_LOG_REPLAYING        0x00000008
 63 /* Set when we changed first MFT's which copy must be updated in $MftMirr. */
 64 #define NTFS_FLAGS_MFTMIRR              0x00001000
 65 #define NTFS_FLAGS_NEED_REPLAY          0x04000000
 66 
 67 
 68 /* ni->ni_flags */
 69 /*
 70  * Data attribute is external compressed (LZX/Xpress)
 71  * 1 - WOF_COMPRESSION_XPRESS4K
 72  * 2 - WOF_COMPRESSION_XPRESS8K
 73  * 3 - WOF_COMPRESSION_XPRESS16K
 74  * 4 - WOF_COMPRESSION_LZX32K
 75  */
 76 #define NI_FLAG_COMPRESSED_MASK         0x0000000f
 77 /* Data attribute is deduplicated. */
 78 #define NI_FLAG_DEDUPLICATED            0x00000010
 79 #define NI_FLAG_EA                      0x00000020
 80 #define NI_FLAG_DIR                     0x00000040
 81 #define NI_FLAG_RESIDENT                0x00000080
 82 #define NI_FLAG_UPDATE_PARENT           0x00000100
 83 // clang-format on
 84 
 85 struct ntfs_mount_options {
 86         char *nls_name;
 87         struct nls_table *nls;
 88 
 89         kuid_t fs_uid;
 90         kgid_t fs_gid;
 91         u16 fs_fmask_inv;
 92         u16 fs_dmask_inv;
 93 
 94         unsigned fmask : 1; /* fmask was set. */
 95         unsigned dmask : 1; /*dmask was set. */
 96         unsigned sys_immutable : 1; /* Immutable system files. */
 97         unsigned discard : 1; /* Issue discard requests on deletions. */
 98         unsigned sparse : 1; /* Create sparse files. */
 99         unsigned showmeta : 1; /* Show meta files. */
100         unsigned nohidden : 1; /* Do not show hidden files. */
101         unsigned force : 1; /* RW mount dirty volume. */
102         unsigned noacsrules : 1; /* Exclude acs rules. */
103         unsigned prealloc : 1; /* Preallocate space when file is growing. */
104 };
105 
106 /* Special value to unpack and deallocate. */
107 #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1)
108 
109 /* TODO: Use rb tree instead of array. */
110 struct runs_tree {
111         struct ntfs_run *runs;
112         size_t count; /* Currently used size a ntfs_run storage. */
113         size_t allocated; /* Currently allocated ntfs_run storage size. */
114 };
115 
116 struct ntfs_buffers {
117         /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */
118         /* Biggest index / smallest cluster = 4096 / 512 = 8 */
119         struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT];
120         u32 bytes;
121         u32 nbufs;
122         u32 off;
123 };
124 
125 enum ALLOCATE_OPT {
126         ALLOCATE_DEF = 0, // Allocate all clusters.
127         ALLOCATE_MFT = 1, // Allocate for MFT.
128 };
129 
130 enum bitmap_mutex_classes {
131         BITMAP_MUTEX_CLUSTERS = 0,
132         BITMAP_MUTEX_MFT = 1,
133 };
134 
135 struct wnd_bitmap {
136         struct super_block *sb;
137         struct rw_semaphore rw_lock;
138 
139         struct runs_tree run;
140         size_t nbits;
141 
142         size_t total_zeroes; // Total number of free bits.
143         u16 *free_bits; // Free bits in each window.
144         size_t nwnd;
145         u32 bits_last; // Bits in last window.
146 
147         struct rb_root start_tree; // Extents, sorted by 'start'.
148         struct rb_root count_tree; // Extents, sorted by 'count + start'.
149         size_t count; // Extents count.
150 
151         /*
152          * -1 Tree is activated but not updated (too many fragments).
153          * 0 - Tree is not activated.
154          * 1 - Tree is activated and updated.
155          */
156         int uptodated;
157         size_t extent_min; // Minimal extent used while building.
158         size_t extent_max; // Upper estimate of biggest free block.
159 
160         /* Zone [bit, end) */
161         size_t zone_bit;
162         size_t zone_end;
163 
164         bool set_tail; // Not necessary in driver.
165         bool inited;
166 };
167 
168 typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2,
169                              size_t len2, const void *param);
170 
171 enum index_mutex_classed {
172         INDEX_MUTEX_I30 = 0,
173         INDEX_MUTEX_SII = 1,
174         INDEX_MUTEX_SDH = 2,
175         INDEX_MUTEX_SO = 3,
176         INDEX_MUTEX_SQ = 4,
177         INDEX_MUTEX_SR = 5,
178         INDEX_MUTEX_TOTAL
179 };
180 
181 /* ntfs_index - Allocation unit inside directory. */
182 struct ntfs_index {
183         struct runs_tree bitmap_run;
184         struct runs_tree alloc_run;
185         /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */
186         struct rw_semaphore run_lock;
187 
188         /*TODO: Remove 'cmp'. */
189         NTFS_CMP_FUNC cmp;
190 
191         u8 index_bits; // log2(root->index_block_size)
192         u8 idx2vbn_bits; // log2(root->index_block_clst)
193         u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits
194         u8 type; // index_mutex_classed
195 };
196 
197 /* Minimum MFT zone. */
198 #define NTFS_MIN_MFT_ZONE 100
199 
200 /* Ntfs file system in-core superblock data. */
201 struct ntfs_sb_info {
202         struct super_block *sb;
203 
204         u32 discard_granularity;
205         u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1)
206 
207         u32 cluster_size; // bytes per cluster
208         u32 cluster_mask; // == cluster_size - 1
209         u64 cluster_mask_inv; // ~(cluster_size - 1)
210         u32 block_mask; // sb->s_blocksize - 1
211         u32 blocks_per_cluster; // cluster_size / sb->s_blocksize
212 
213         u32 record_size;
214         u32 index_size;
215 
216         u8 cluster_bits;
217         u8 record_bits;
218 
219         u64 maxbytes; // Maximum size for normal files.
220         u64 maxbytes_sparse; // Maximum size for sparse file.
221 
222         u32 flags; // See NTFS_FLAGS_XXX.
223 
224         CLST bad_clusters; // The count of marked bad clusters.
225 
226         u16 max_bytes_per_attr; // Maximum attribute size in record.
227         u16 attr_size_tr; // Attribute size threshold (320 bytes).
228 
229         /* Records in $Extend. */
230         CLST objid_no;
231         CLST quota_no;
232         CLST reparse_no;
233         CLST usn_jrnl_no;
234 
235         struct ATTR_DEF_ENTRY *def_table; // Attribute definition table.
236         u32 def_entries;
237         u32 ea_max_size;
238 
239         struct MFT_REC *new_rec;
240 
241         u16 *upcase;
242 
243         struct {
244                 u64 lbo, lbo2;
245                 struct ntfs_inode *ni;
246                 struct wnd_bitmap bitmap; // $MFT::Bitmap
247                 /*
248                  * MFT records [11-24) used to expand MFT itself.
249                  * They always marked as used in $MFT::Bitmap
250                  * 'reserved_bitmap' contains real bitmap of these records.
251                  */
252                 ulong reserved_bitmap; // Bitmap of used records [11 - 24)
253                 size_t next_free; // The next record to allocate from
254                 size_t used; // MFT valid size in records.
255                 u32 recs_mirr; // Number of records in MFTMirr
256                 u8 next_reserved;
257                 u8 reserved_bitmap_inited;
258         } mft;
259 
260         struct {
261                 struct wnd_bitmap bitmap; // $Bitmap::Data
262                 CLST next_free_lcn;
263         } used;
264 
265         struct {
266                 u64 size; // In bytes.
267                 u64 blocks; // In blocks.
268                 u64 ser_num;
269                 struct ntfs_inode *ni;
270                 __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY.
271                 u8 major_ver;
272                 u8 minor_ver;
273                 char label[65];
274                 bool real_dirty; // Real fs state.
275         } volume;
276 
277         struct {
278                 struct ntfs_index index_sii;
279                 struct ntfs_index index_sdh;
280                 struct ntfs_inode *ni;
281                 u32 next_id;
282                 u64 next_off;
283 
284                 __le32 def_security_id;
285         } security;
286 
287         struct {
288                 struct ntfs_index index_r;
289                 struct ntfs_inode *ni;
290                 u64 max_size; // 16K
291         } reparse;
292 
293         struct {
294                 struct ntfs_index index_o;
295                 struct ntfs_inode *ni;
296         } objid;
297 
298         struct {
299                 struct mutex mtx_lznt;
300                 struct lznt *lznt;
301 #ifdef CONFIG_NTFS3_LZX_XPRESS
302                 struct mutex mtx_xpress;
303                 struct xpress_decompressor *xpress;
304                 struct mutex mtx_lzx;
305                 struct lzx_decompressor *lzx;
306 #endif
307         } compress;
308 
309         struct ntfs_mount_options *options;
310         struct ratelimit_state msg_ratelimit;
311 };
312 
313 /* One MFT record(usually 1024 bytes), consists of attributes. */
314 struct mft_inode {
315         struct rb_node node;
316         struct ntfs_sb_info *sbi;
317 
318         struct MFT_REC *mrec;
319         struct ntfs_buffers nb;
320 
321         CLST rno;
322         bool dirty;
323 };
324 
325 /* Nested class for ntfs_inode::ni_lock. */
326 enum ntfs_inode_mutex_lock_class {
327         NTFS_INODE_MUTEX_DIRTY,
328         NTFS_INODE_MUTEX_SECURITY,
329         NTFS_INODE_MUTEX_OBJID,
330         NTFS_INODE_MUTEX_REPARSE,
331         NTFS_INODE_MUTEX_NORMAL,
332         NTFS_INODE_MUTEX_PARENT,
333 };
334 
335 /*
336  * sturct ntfs_inode
337  *
338  * Ntfs inode - extends linux inode. consists of one or more MFT inodes.
339  */
340 struct ntfs_inode {
341         struct mft_inode mi; // base record
342 
343         /*
344          * Valid size: [0 - i_valid) - these range in file contains valid data.
345          * Range [i_valid - inode->i_size) - contains 0.
346          * Usually i_valid <= inode->i_size.
347          */
348         u64 i_valid;
349         struct timespec64 i_crtime;
350 
351         struct mutex ni_lock;
352 
353         /* File attributes from std. */
354         enum FILE_ATTRIBUTE std_fa;
355         __le32 std_security_id;
356 
357         /*
358          * Tree of mft_inode.
359          * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes
360          * e.g. file becomes too fragmented or contains a lot of names.
361          */
362         struct rb_root mi_tree;
363 
364         /*
365          * This member is used in ntfs_readdir to ensure that all subrecords are loaded
366          */
367         u8 mi_loaded;
368 
369         union {
370                 struct ntfs_index dir;
371                 struct {
372                         struct rw_semaphore run_lock;
373                         struct runs_tree run;
374 #ifdef CONFIG_NTFS3_LZX_XPRESS
375                         struct page *offs_page;
376 #endif
377                 } file;
378         };
379 
380         struct {
381                 struct runs_tree run;
382                 struct ATTR_LIST_ENTRY *le; // 1K aligned memory.
383                 size_t size;
384                 bool dirty;
385         } attr_list;
386 
387         size_t ni_flags; // NI_FLAG_XXX
388 
389         struct inode vfs_inode;
390 };
391 
392 struct indx_node {
393         struct ntfs_buffers nb;
394         struct INDEX_BUFFER *index;
395 };
396 
397 struct ntfs_fnd {
398         int level;
399         struct indx_node *nodes[20];
400         struct NTFS_DE *de[20];
401         struct NTFS_DE *root_de;
402 };
403 
404 enum REPARSE_SIGN {
405         REPARSE_NONE = 0,
406         REPARSE_COMPRESSED = 1,
407         REPARSE_DEDUPLICATED = 2,
408         REPARSE_LINK = 3
409 };
410 
411 /* Functions from attrib.c */
412 int attr_load_runs(struct ATTRIB *attr, struct ntfs_inode *ni,
413                    struct runs_tree *run, const CLST *vcn);
414 int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run,
415                            CLST vcn, CLST lcn, CLST len, CLST *pre_alloc,
416                            enum ALLOCATE_OPT opt, CLST *alen, const size_t fr,
417                            CLST *new_lcn);
418 int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr,
419                           struct ATTR_LIST_ENTRY *le, struct mft_inode *mi,
420                           u64 new_size, struct runs_tree *run,
421                           struct ATTRIB **ins_attr, struct page *page);
422 int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,
423                   const __le16 *name, u8 name_len, struct runs_tree *run,
424                   u64 new_size, const u64 *new_valid, bool keep_prealloc,
425                   struct ATTRIB **ret);
426 int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn,
427                         CLST *len, bool *new);
428 int attr_data_read_resident(struct ntfs_inode *ni, struct page *page);
429 int attr_data_write_resident(struct ntfs_inode *ni, struct page *page);
430 int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type,
431                        const __le16 *name, u8 name_len, struct runs_tree *run,
432                        CLST vcn);
433 int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type,
434                          const __le16 *name, u8 name_len, struct runs_tree *run,
435                          u64 from, u64 to);
436 int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr,
437                         struct runs_tree *run, u64 frame, u64 frames,
438                         u8 frame_bits, u32 *ondisk_size, u64 *vbo_data);
439 int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr,
440                              CLST frame, CLST *clst_data);
441 int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size,
442                         u64 new_valid);
443 int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes);
444 int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size);
445 
446 /* Functions from attrlist.c */
447 void al_destroy(struct ntfs_inode *ni);
448 bool al_verify(struct ntfs_inode *ni);
449 int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr);
450 struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni,
451                                      struct ATTR_LIST_ENTRY *le);
452 struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni,
453                                    struct ATTR_LIST_ENTRY *le,
454                                    const struct ATTRIB *attr);
455 struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni,
456                                    struct ATTR_LIST_ENTRY *le,
457                                    enum ATTR_TYPE type, const __le16 *name,
458                                    u8 name_len, const CLST *vcn);
459 int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name,
460               u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref,
461               struct ATTR_LIST_ENTRY **new_le);
462 bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le);
463 bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn,
464                   const __le16 *name, size_t name_len,
465                   const struct MFT_REF *ref);
466 int al_update(struct ntfs_inode *ni, int sync);
467 static inline size_t al_aligned(size_t size)
468 {
469         return (size + 1023) & ~(size_t)1023;
470 }
471 
472 /* Globals from bitfunc.c */
473 bool are_bits_clear(const ulong *map, size_t bit, size_t nbits);
474 bool are_bits_set(const ulong *map, size_t bit, size_t nbits);
475 size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits);
476 
477 /* Globals from dir.c */
478 int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len,
479                       u8 *buf, int buf_len);
480 int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len,
481                       struct cpu_str *uni, u32 max_ulen,
482                       enum utf16_endian endian);
483 struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni,
484                            struct ntfs_fnd *fnd);
485 bool dir_is_empty(struct inode *dir);
486 extern const struct file_operations ntfs_dir_operations;
487 
488 /* Globals from file.c */
489 int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
490                  struct kstat *stat, u32 request_mask, u32 flags);
491 void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn,
492                          CLST len);
493 int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
494                   struct iattr *attr);
495 int ntfs_file_open(struct inode *inode, struct file *file);
496 int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
497                 __u64 start, __u64 len);
498 extern const struct inode_operations ntfs_special_inode_operations;
499 extern const struct inode_operations ntfs_file_inode_operations;
500 extern const struct file_operations ntfs_file_operations;
501 
502 /* Globals from frecord.c */
503 void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi);
504 struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni);
505 struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni);
506 void ni_clear(struct ntfs_inode *ni);
507 int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi);
508 int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le,
509                struct mft_inode **mi);
510 struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr,
511                             struct ATTR_LIST_ENTRY **entry_o,
512                             enum ATTR_TYPE type, const __le16 *name,
513                             u8 name_len, const CLST *vcn,
514                             struct mft_inode **mi);
515 struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr,
516                                struct ATTR_LIST_ENTRY **le,
517                                struct mft_inode **mi);
518 struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
519                             const __le16 *name, u8 name_len, CLST vcn,
520                             struct mft_inode **pmi);
521 int ni_load_all_mi(struct ntfs_inode *ni);
522 bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi);
523 int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type,
524                    const __le16 *name, size_t name_len, bool base_only,
525                    const __le16 *id);
526 int ni_create_attr_list(struct ntfs_inode *ni);
527 int ni_expand_list(struct ntfs_inode *ni);
528 int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type,
529                           const __le16 *name, u8 name_len,
530                           const struct runs_tree *run, CLST svcn, CLST len,
531                           __le16 flags, struct ATTRIB **new_attr,
532                           struct mft_inode **mi);
533 int ni_insert_resident(struct ntfs_inode *ni, u32 data_size,
534                        enum ATTR_TYPE type, const __le16 *name, u8 name_len,
535                        struct ATTRIB **new_attr, struct mft_inode **mi,
536                        struct ATTR_LIST_ENTRY **le);
537 void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr,
538                        struct mft_inode *mi, struct ATTR_LIST_ENTRY *le);
539 int ni_delete_all(struct ntfs_inode *ni);
540 struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni,
541                                      const struct cpu_str *uni,
542                                      const struct MFT_REF *home,
543                                      struct mft_inode **mi,
544                                      struct ATTR_LIST_ENTRY **entry);
545 struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type,
546                                      struct mft_inode **mi,
547                                      struct ATTR_LIST_ENTRY **entry);
548 int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa);
549 enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr,
550                                    struct REPARSE_DATA_BUFFER *buffer);
551 int ni_write_inode(struct inode *inode, int sync, const char *hint);
552 #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__)
553 int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
554               __u64 vbo, __u64 len);
555 int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page);
556 int ni_decompress_file(struct ntfs_inode *ni);
557 int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages,
558                   u32 pages_per_frame);
559 int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
560                    u32 pages_per_frame);
561 int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
562                    struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step);
563 
564 bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
565                          struct NTFS_DE *de, struct NTFS_DE *de2,
566                          int undo_step);
567 
568 int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
569                 struct NTFS_DE *de);
570 
571 int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni,
572               struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de,
573               bool *is_bad);
574 
575 bool ni_is_dirty(struct inode *inode);
576 
577 /* Globals from fslog.c */
578 int log_replay(struct ntfs_inode *ni, bool *initialized);
579 
580 /* Globals from fsntfs.c */
581 bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes);
582 int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes,
583                        bool simple);
584 int ntfs_extend_init(struct ntfs_sb_info *sbi);
585 int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi);
586 const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi,
587                                             enum ATTR_TYPE Type);
588 int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len,
589                              CLST *new_lcn, CLST *new_len,
590                              enum ALLOCATE_OPT opt);
591 int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft,
592                        struct ntfs_inode *ni, struct mft_inode **mi);
593 void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno);
594 int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to);
595 int ntfs_refresh_zone(struct ntfs_sb_info *sbi);
596 int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait);
597 enum NTFS_DIRTY_FLAGS {
598         NTFS_DIRTY_CLEAR = 0,
599         NTFS_DIRTY_DIRTY = 1,
600         NTFS_DIRTY_ERROR = 2,
601 };
602 int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty);
603 int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer);
604 int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes,
605                   const void *buffer, int wait);
606 int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run,
607                       u64 vbo, const void *buf, size_t bytes, int sync);
608 struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi,
609                                    const struct runs_tree *run, u64 vbo);
610 int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run,
611                      u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb);
612 int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo,
613                  struct NTFS_RECORD_HEADER *rhdr, u32 bytes,
614                  struct ntfs_buffers *nb);
615 int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo,
616                 u32 bytes, struct ntfs_buffers *nb);
617 int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr,
618                   struct ntfs_buffers *nb, int sync);
619 int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run,
620                    struct page **pages, u32 nr_pages, u64 vbo, u32 bytes,
621                    u32 op);
622 int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run);
623 int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run,
624                     u64 vbo, u64 *lbo, u64 *bytes);
625 struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec,
626                                   bool dir);
627 extern const u8 s_default_security[0x50];
628 bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len);
629 int ntfs_security_init(struct ntfs_sb_info *sbi);
630 int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id,
631                             struct SECURITY_DESCRIPTOR_RELATIVE **sd,
632                             size_t *size);
633 int ntfs_insert_security(struct ntfs_sb_info *sbi,
634                          const struct SECURITY_DESCRIPTOR_RELATIVE *sd,
635                          u32 size, __le32 *security_id, bool *inserted);
636 int ntfs_reparse_init(struct ntfs_sb_info *sbi);
637 int ntfs_objid_init(struct ntfs_sb_info *sbi);
638 int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid);
639 int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
640                         const struct MFT_REF *ref);
641 int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag,
642                         const struct MFT_REF *ref);
643 void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim);
644 int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim);
645 
646 /* Globals from index.c */
647 int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit);
648 void fnd_clear(struct ntfs_fnd *fnd);
649 static inline struct ntfs_fnd *fnd_get(void)
650 {
651         return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS);
652 }
653 static inline void fnd_put(struct ntfs_fnd *fnd)
654 {
655         if (fnd) {
656                 fnd_clear(fnd);
657                 kfree(fnd);
658         }
659 }
660 void indx_clear(struct ntfs_index *idx);
661 int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi,
662               const struct ATTRIB *attr, enum index_mutex_classed type);
663 struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni,
664                                  struct ATTRIB **attr, struct mft_inode **mi);
665 int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn,
666               struct indx_node **node);
667 int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir,
668               const struct INDEX_ROOT *root, const void *Key, size_t KeyLen,
669               const void *param, int *diff, struct NTFS_DE **entry,
670               struct ntfs_fnd *fnd);
671 int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni,
672                    const struct INDEX_ROOT *root, struct NTFS_DE **entry,
673                    struct ntfs_fnd *fnd);
674 int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni,
675                   const struct INDEX_ROOT *root, struct NTFS_DE **entry,
676                   size_t *off, struct ntfs_fnd *fnd);
677 int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
678                       const struct NTFS_DE *new_de, const void *param,
679                       struct ntfs_fnd *fnd, bool undo);
680 int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni,
681                       const void *key, u32 key_len, const void *param);
682 int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi,
683                     const struct ATTR_FILE_NAME *fname,
684                     const struct NTFS_DUP_INFO *dup, int sync);
685 
686 /* Globals from inode.c */
687 struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref,
688                          const struct cpu_str *name);
689 int ntfs_set_size(struct inode *inode, u64 new_size);
690 int reset_log_file(struct inode *inode);
691 int ntfs_get_block(struct inode *inode, sector_t vbn,
692                    struct buffer_head *bh_result, int create);
693 int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc);
694 int ntfs_sync_inode(struct inode *inode);
695 int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,
696                       struct inode *i2);
697 int inode_write_data(struct inode *inode, const void *data, size_t bytes);
698 struct inode *ntfs_create_inode(struct user_namespace *mnt_userns,
699                                 struct inode *dir, struct dentry *dentry,
700                                 const struct cpu_str *uni, umode_t mode,
701                                 dev_t dev, const char *symname, u32 size,
702                                 struct ntfs_fnd *fnd);
703 int ntfs_link_inode(struct inode *inode, struct dentry *dentry);
704 int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry);
705 void ntfs_evict_inode(struct inode *inode);
706 extern const struct inode_operations ntfs_link_inode_operations;
707 extern const struct address_space_operations ntfs_aops;
708 extern const struct address_space_operations ntfs_aops_cmpr;
709 
710 /* Globals from name_i.c */
711 int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name,
712                  const struct cpu_str *uni);
713 struct dentry *ntfs3_get_parent(struct dentry *child);
714 
715 extern const struct inode_operations ntfs_dir_inode_operations;
716 extern const struct inode_operations ntfs_special_inode_operations;
717 
718 /* Globals from record.c */
719 int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi);
720 void mi_put(struct mft_inode *mi);
721 int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno);
722 int mi_read(struct mft_inode *mi, bool is_mft);
723 struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr);
724 // TODO: id?
725 struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr,
726                             enum ATTR_TYPE type, const __le16 *name,
727                             size_t name_len, const __le16 *id);
728 static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec,
729                                               struct ATTR_LIST_ENTRY *le)
730 {
731         return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len,
732                             &le->id);
733 }
734 int mi_write(struct mft_inode *mi, int wait);
735 int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno,
736                   __le16 flags, bool is_mft);
737 void mi_mark_free(struct mft_inode *mi);
738 struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type,
739                               const __le16 *name, u8 name_len, u32 asize,
740                               u16 name_off);
741 
742 bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi,
743                     struct ATTRIB *attr);
744 bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes);
745 int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr,
746                  struct runs_tree *run, CLST len);
747 static inline bool mi_is_ref(const struct mft_inode *mi,
748                              const struct MFT_REF *ref)
749 {
750         if (le32_to_cpu(ref->low) != mi->rno)
751                 return false;
752         if (ref->seq != mi->mrec->seq)
753                 return false;
754 
755 #ifdef CONFIG_NTFS3_64BIT_CLUSTER
756         return le16_to_cpu(ref->high) == (mi->rno >> 32);
757 #else
758         return !ref->high;
759 #endif
760 }
761 
762 static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref)
763 {
764         ref->low = cpu_to_le32(mi->rno);
765 #ifdef CONFIG_NTFS3_64BIT_CLUSTER
766         ref->high = cpu_to_le16(mi->rno >> 32);
767 #else
768         ref->high = 0;
769 #endif
770         ref->seq = mi->mrec->seq;
771 }
772 
773 /* Globals from run.c */
774 bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn,
775                       CLST *len, size_t *index);
776 void run_truncate(struct runs_tree *run, CLST vcn);
777 void run_truncate_head(struct runs_tree *run, CLST vcn);
778 void run_truncate_around(struct runs_tree *run, CLST vcn);
779 bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *Index);
780 bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len,
781                    bool is_mft);
782 bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len);
783 bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn,
784                    CLST *lcn, CLST *len);
785 bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn);
786 
787 int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf,
788              u32 run_buf_size, CLST *packed_vcns);
789 int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino,
790                CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf,
791                u32 run_buf_size);
792 
793 #ifdef NTFS3_CHECK_FREE_CLST
794 int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino,
795                   CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf,
796                   u32 run_buf_size);
797 #else
798 #define run_unpack_ex run_unpack
799 #endif
800 int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn);
801 
802 /* Globals from super.c */
803 void *ntfs_set_shared(void *ptr, u32 bytes);
804 void *ntfs_put_shared(void *ptr);
805 void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len);
806 int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len);
807 
808 /* Globals from bitmap.c*/
809 int __init ntfs3_init_bitmap(void);
810 void ntfs3_exit_bitmap(void);
811 void wnd_close(struct wnd_bitmap *wnd);
812 static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd)
813 {
814         return wnd->total_zeroes;
815 }
816 int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits);
817 int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits);
818 int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits);
819 bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits);
820 bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits);
821 
822 /* Possible values for 'flags' 'wnd_find'. */
823 #define BITMAP_FIND_MARK_AS_USED 0x01
824 #define BITMAP_FIND_FULL 0x02
825 size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint,
826                 size_t flags, size_t *allocated);
827 int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits);
828 void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len);
829 int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range);
830 
831 /* Globals from upcase.c */
832 int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2,
833                    const u16 *upcase, bool bothcase);
834 int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2,
835                        const u16 *upcase, bool bothcase);
836 
837 /* globals from xattr.c */
838 #ifdef CONFIG_NTFS3_FS_POSIX_ACL
839 struct posix_acl *ntfs_get_acl(struct inode *inode, int type, bool rcu);
840 int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
841                  struct posix_acl *acl, int type);
842 int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode,
843                   struct inode *dir);
844 #else
845 #define ntfs_get_acl NULL
846 #define ntfs_set_acl NULL
847 #endif
848 
849 int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode);
850 int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode,
851                     int mask);
852 ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
853 extern const struct xattr_handler *ntfs_xattr_handlers[];
854 
855 int ntfs_save_wsl_perm(struct inode *inode);
856 void ntfs_get_wsl_perm(struct inode *inode);
857 
858 /* globals from lznt.c */
859 struct lznt *get_lznt_ctx(int level);
860 size_t compress_lznt(const void *uncompressed, size_t uncompressed_size,
861                      void *compressed, size_t compressed_size,
862                      struct lznt *ctx);
863 ssize_t decompress_lznt(const void *compressed, size_t compressed_size,
864                         void *uncompressed, size_t uncompressed_size);
865 
866 static inline bool is_ntfs3(struct ntfs_sb_info *sbi)
867 {
868         return sbi->volume.major_ver >= 3;
869 }
870 
871 /* (sb->s_flags & SB_ACTIVE) */
872 static inline bool is_mounted(struct ntfs_sb_info *sbi)
873 {
874         return !!sbi->sb->s_root;
875 }
876 
877 static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno)
878 {
879         return rno < MFT_REC_FREE || rno == sbi->objid_no ||
880                rno == sbi->quota_no || rno == sbi->reparse_no ||
881                rno == sbi->usn_jrnl_no;
882 }
883 
884 static inline void ntfs_unmap_page(struct page *page)
885 {
886         kunmap(page);
887         put_page(page);
888 }
889 
890 static inline struct page *ntfs_map_page(struct address_space *mapping,
891                                          unsigned long index)
892 {
893         struct page *page = read_mapping_page(mapping, index, NULL);
894 
895         if (!IS_ERR(page)) {
896                 kmap(page);
897                 if (!PageError(page))
898                         return page;
899                 ntfs_unmap_page(page);
900                 return ERR_PTR(-EIO);
901         }
902         return page;
903 }
904 
905 static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd)
906 {
907         return wnd->zone_bit;
908 }
909 
910 static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd)
911 {
912         return wnd->zone_end - wnd->zone_bit;
913 }
914 
915 static inline void run_init(struct runs_tree *run)
916 {
917         run->runs = NULL;
918         run->count = 0;
919         run->allocated = 0;
920 }
921 
922 static inline struct runs_tree *run_alloc(void)
923 {
924         return kzalloc(sizeof(struct runs_tree), GFP_NOFS);
925 }
926 
927 static inline void run_close(struct runs_tree *run)
928 {
929         kvfree(run->runs);
930         memset(run, 0, sizeof(*run));
931 }
932 
933 static inline void run_free(struct runs_tree *run)
934 {
935         if (run) {
936                 kvfree(run->runs);
937                 kfree(run);
938         }
939 }
940 
941 static inline bool run_is_empty(struct runs_tree *run)
942 {
943         return !run->count;
944 }
945 
946 /* NTFS uses quad aligned bitmaps. */
947 static inline size_t bitmap_size(size_t bits)
948 {
949         return ALIGN((bits + 7) >> 3, 8);
950 }
951 
952 #define _100ns2seconds 10000000
953 #define SecondsToStartOf1970 0x00000002B6109100
954 
955 #define NTFS_TIME_GRAN 100
956 
957 /*
958  * kernel2nt - Converts in-memory kernel timestamp into nt time.
959  */
960 static inline __le64 kernel2nt(const struct timespec64 *ts)
961 {
962         // 10^7 units of 100 nanoseconds one second
963         return cpu_to_le64(_100ns2seconds *
964                                    (ts->tv_sec + SecondsToStartOf1970) +
965                            ts->tv_nsec / NTFS_TIME_GRAN);
966 }
967 
968 /*
969  * nt2kernel - Converts on-disk nt time into kernel timestamp.
970  */
971 static inline void nt2kernel(const __le64 tm, struct timespec64 *ts)
972 {
973         u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970;
974 
975         // WARNING: do_div changes its first argument(!)
976         ts->tv_nsec = do_div(t, _100ns2seconds) * 100;
977         ts->tv_sec = t;
978 }
979 
980 static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb)
981 {
982         return sb->s_fs_info;
983 }
984 
985 /*
986  * ntfs_up_cluster - Align up on cluster boundary.
987  */
988 static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size)
989 {
990         return (size + sbi->cluster_mask) & sbi->cluster_mask_inv;
991 }
992 
993 /*
994  * ntfs_up_block - Align up on cluster boundary.
995  */
996 static inline u64 ntfs_up_block(const struct super_block *sb, u64 size)
997 {
998         return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1);
999 }
1000 
1001 static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size)
1002 {
1003         return (size + sbi->cluster_mask) >> sbi->cluster_bits;
1004 }
1005 
1006 static inline u64 bytes_to_block(const struct super_block *sb, u64 size)
1007 {
1008         return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1009 }
1010 
1011 static inline struct buffer_head *ntfs_bread(struct super_block *sb,
1012                                              sector_t block)
1013 {
1014         struct buffer_head *bh = sb_bread(sb, block);
1015 
1016         if (bh)
1017                 return bh;
1018 
1019         ntfs_err(sb, "failed to read volume at offset 0x%llx",
1020                  (u64)block << sb->s_blocksize_bits);
1021         return NULL;
1022 }
1023 
1024 static inline struct ntfs_inode *ntfs_i(struct inode *inode)
1025 {
1026         return container_of(inode, struct ntfs_inode, vfs_inode);
1027 }
1028 
1029 static inline bool is_compressed(const struct ntfs_inode *ni)
1030 {
1031         return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) ||
1032                (ni->ni_flags & NI_FLAG_COMPRESSED_MASK);
1033 }
1034 
1035 static inline int ni_ext_compress_bits(const struct ntfs_inode *ni)
1036 {
1037         return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK);
1038 }
1039 
1040 /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */
1041 static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits)
1042 {
1043         ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK;
1044 }
1045 
1046 static inline bool is_dedup(const struct ntfs_inode *ni)
1047 {
1048         return ni->ni_flags & NI_FLAG_DEDUPLICATED;
1049 }
1050 
1051 static inline bool is_encrypted(const struct ntfs_inode *ni)
1052 {
1053         return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED;
1054 }
1055 
1056 static inline bool is_sparsed(const struct ntfs_inode *ni)
1057 {
1058         return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE;
1059 }
1060 
1061 static inline int is_resident(struct ntfs_inode *ni)
1062 {
1063         return ni->ni_flags & NI_FLAG_RESIDENT;
1064 }
1065 
1066 static inline void le16_sub_cpu(__le16 *var, u16 val)
1067 {
1068         *var = cpu_to_le16(le16_to_cpu(*var) - val);
1069 }
1070 
1071 static inline void le32_sub_cpu(__le32 *var, u32 val)
1072 {
1073         *var = cpu_to_le32(le32_to_cpu(*var) - val);
1074 }
1075 
1076 static inline void nb_put(struct ntfs_buffers *nb)
1077 {
1078         u32 i, nbufs = nb->nbufs;
1079 
1080         if (!nbufs)
1081                 return;
1082 
1083         for (i = 0; i < nbufs; i++)
1084                 put_bh(nb->bh[i]);
1085         nb->nbufs = 0;
1086 }
1087 
1088 static inline void put_indx_node(struct indx_node *in)
1089 {
1090         if (!in)
1091                 return;
1092 
1093         kfree(in->index);
1094         nb_put(&in->nb);
1095         kfree(in);
1096 }
1097 
1098 static inline void mi_clear(struct mft_inode *mi)
1099 {
1100         nb_put(&mi->nb);
1101         kfree(mi->mrec);
1102         mi->mrec = NULL;
1103 }
1104 
1105 static inline void ni_lock(struct ntfs_inode *ni)
1106 {
1107         mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL);
1108 }
1109 
1110 static inline void ni_lock_dir(struct ntfs_inode *ni)
1111 {
1112         mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT);
1113 }
1114 
1115 static inline void ni_unlock(struct ntfs_inode *ni)
1116 {
1117         mutex_unlock(&ni->ni_lock);
1118 }
1119 
1120 static inline int ni_trylock(struct ntfs_inode *ni)
1121 {
1122         return mutex_trylock(&ni->ni_lock);
1123 }
1124 
1125 static inline int attr_load_runs_attr(struct ntfs_inode *ni,
1126                                       struct ATTRIB *attr,
1127                                       struct runs_tree *run, CLST vcn)
1128 {
1129         return attr_load_runs_vcn(ni, attr->type, attr_name(attr),
1130                                   attr->name_len, run, vcn);
1131 }
1132 
1133 static inline void le64_sub_cpu(__le64 *var, u64 val)
1134 {
1135         *var = cpu_to_le64(le64_to_cpu(*var) - val);
1136 }
1137 
1138 #endif /* _LINUX_NTFS3_NTFS_FS_H */
1139 

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