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