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