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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 | |
87790b65 KA |
9 | #ifndef _LINUX_NTFS3_NTFS_FS_H |
10 | #define _LINUX_NTFS3_NTFS_FS_H | |
11 | ||
4534a70b KK |
12 | #define MINUS_ONE_T ((size_t)(-1)) |
13 | /* Biggest MFT / smallest cluster */ | |
14 | #define MAXIMUM_BYTES_PER_MFT 4096 | |
15 | #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) | |
16 | ||
17 | #define MAXIMUM_BYTES_PER_INDEX 4096 | |
18 | #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) | |
19 | ||
20 | /* ntfs specific error code when fixup failed*/ | |
21 | #define E_NTFS_FIXUP 555 | |
22 | /* ntfs specific error code about resident->nonresident*/ | |
23 | #define E_NTFS_NONRESIDENT 556 | |
24 | /* ntfs specific error code about punch hole*/ | |
25 | #define E_NTFS_NOTALIGNED 557 | |
26 | ||
27 | ||
28 | /* sbi->flags */ | |
29 | #define NTFS_FLAGS_NODISCARD 0x00000001 | |
30 | /* Set when LogFile is replaying */ | |
31 | #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 | |
32 | /* Set when we changed first MFT's which copy must be updated in $MftMirr */ | |
33 | #define NTFS_FLAGS_MFTMIRR 0x00001000 | |
34 | #define NTFS_FLAGS_NEED_REPLAY 0x04000000 | |
35 | ||
36 | ||
37 | /* ni->ni_flags */ | |
38 | /* | |
39 | * Data attribute is external compressed (lzx/xpress) | |
40 | * 1 - WOF_COMPRESSION_XPRESS4K | |
41 | * 2 - WOF_COMPRESSION_XPRESS8K | |
42 | * 3 - WOF_COMPRESSION_XPRESS16K | |
43 | * 4 - WOF_COMPRESSION_LZX32K | |
44 | */ | |
45 | #define NI_FLAG_COMPRESSED_MASK 0x0000000f | |
46 | /* Data attribute is deduplicated */ | |
47 | #define NI_FLAG_DEDUPLICATED 0x00000010 | |
48 | #define NI_FLAG_EA 0x00000020 | |
49 | #define NI_FLAG_DIR 0x00000040 | |
50 | #define NI_FLAG_RESIDENT 0x00000080 | |
51 | #define NI_FLAG_UPDATE_PARENT 0x00000100 | |
52 | // clang-format on | |
53 | ||
54 | struct ntfs_mount_options { | |
55 | struct nls_table *nls; | |
56 | ||
57 | kuid_t fs_uid; | |
58 | kgid_t fs_gid; | |
59 | u16 fs_fmask_inv; | |
60 | u16 fs_dmask_inv; | |
61 | ||
62 | unsigned uid : 1, /* uid was set */ | |
63 | gid : 1, /* gid was set */ | |
64 | fmask : 1, /* fmask was set */ | |
65 | dmask : 1, /*dmask was set*/ | |
66 | sys_immutable : 1, /* immutable system files */ | |
67 | discard : 1, /* issue discard requests on deletions */ | |
68 | sparse : 1, /*create sparse files*/ | |
69 | showmeta : 1, /*show meta files*/ | |
70 | nohidden : 1, /*do not show hidden files*/ | |
71 | force : 1, /*rw mount dirty volume*/ | |
72 | no_acs_rules : 1, /*exclude acs rules*/ | |
73 | prealloc : 1 /*preallocate space when file is growing*/ | |
74 | ; | |
75 | }; | |
76 | ||
77 | /* special value to unpack and deallocate*/ | |
78 | #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) | |
79 | ||
80 | /* TODO: use rb tree instead of array */ | |
81 | struct runs_tree { | |
82 | struct ntfs_run *runs; | |
83 | size_t count; // Currently used size a ntfs_run storage. | |
84 | size_t allocated; // Currently allocated ntfs_run storage size. | |
85 | }; | |
86 | ||
87 | struct ntfs_buffers { | |
88 | /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ | |
89 | /* Biggest index / smallest cluster = 4096 / 512 = 8 */ | |
90 | struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; | |
91 | u32 bytes; | |
92 | u32 nbufs; | |
93 | u32 off; | |
94 | }; | |
95 | ||
96 | enum ALLOCATE_OPT { | |
97 | ALLOCATE_DEF = 0, // Allocate all clusters | |
98 | ALLOCATE_MFT = 1, // Allocate for MFT | |
99 | }; | |
100 | ||
101 | enum bitmap_mutex_classes { | |
102 | BITMAP_MUTEX_CLUSTERS = 0, | |
103 | BITMAP_MUTEX_MFT = 1, | |
104 | }; | |
105 | ||
106 | struct wnd_bitmap { | |
107 | struct super_block *sb; | |
108 | struct rw_semaphore rw_lock; | |
109 | ||
110 | struct runs_tree run; | |
111 | size_t nbits; | |
112 | ||
113 | size_t total_zeroes; // total number of free bits | |
114 | u16 *free_bits; // free bits in each window | |
115 | size_t nwnd; | |
116 | u32 bits_last; // bits in last window | |
117 | ||
118 | struct rb_root start_tree; // extents, sorted by 'start' | |
119 | struct rb_root count_tree; // extents, sorted by 'count + start' | |
120 | size_t count; // extents count | |
121 | ||
122 | /* | |
123 | * -1 Tree is activated but not updated (too many fragments) | |
124 | * 0 - Tree is not activated | |
125 | * 1 - Tree is activated and updated | |
126 | */ | |
127 | int uptodated; | |
128 | size_t extent_min; // Minimal extent used while building | |
129 | size_t extent_max; // Upper estimate of biggest free block | |
130 | ||
131 | /* Zone [bit, end) */ | |
132 | size_t zone_bit; | |
133 | size_t zone_end; | |
134 | ||
135 | bool set_tail; // not necessary in driver | |
136 | bool inited; | |
137 | }; | |
138 | ||
139 | typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, | |
140 | size_t len2, const void *param); | |
141 | ||
142 | enum index_mutex_classed { | |
143 | INDEX_MUTEX_I30 = 0, | |
144 | INDEX_MUTEX_SII = 1, | |
145 | INDEX_MUTEX_SDH = 2, | |
146 | INDEX_MUTEX_SO = 3, | |
147 | INDEX_MUTEX_SQ = 4, | |
148 | INDEX_MUTEX_SR = 5, | |
149 | INDEX_MUTEX_TOTAL | |
150 | }; | |
151 | ||
152 | /* ntfs_index - allocation unit inside directory */ | |
153 | struct ntfs_index { | |
154 | struct runs_tree bitmap_run; | |
155 | struct runs_tree alloc_run; | |
156 | /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ | |
157 | struct rw_semaphore run_lock; | |
158 | ||
159 | /*TODO: remove 'cmp'*/ | |
160 | NTFS_CMP_FUNC cmp; | |
161 | ||
162 | u8 index_bits; // log2(root->index_block_size) | |
163 | u8 idx2vbn_bits; // log2(root->index_block_clst) | |
164 | u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits | |
165 | u8 type; // index_mutex_classed | |
166 | }; | |
167 | ||
168 | /* Minimum mft zone */ | |
169 | #define NTFS_MIN_MFT_ZONE 100 | |
170 | ||
171 | /* ntfs file system in-core superblock data */ | |
172 | struct ntfs_sb_info { | |
173 | struct super_block *sb; | |
174 | ||
175 | u32 discard_granularity; | |
176 | u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) | |
177 | ||
178 | u32 cluster_size; // bytes per cluster | |
179 | u32 cluster_mask; // == cluster_size - 1 | |
180 | u64 cluster_mask_inv; // ~(cluster_size - 1) | |
181 | u32 block_mask; // sb->s_blocksize - 1 | |
182 | u32 blocks_per_cluster; // cluster_size / sb->s_blocksize | |
183 | ||
184 | u32 record_size; | |
185 | u32 sector_size; | |
186 | u32 index_size; | |
187 | ||
188 | u8 sector_bits; | |
189 | u8 cluster_bits; | |
190 | u8 record_bits; | |
191 | ||
192 | u64 maxbytes; // Maximum size for normal files | |
193 | u64 maxbytes_sparse; // Maximum size for sparse file | |
194 | ||
195 | u32 flags; // See NTFS_FLAGS_XXX | |
196 | ||
197 | CLST bad_clusters; // The count of marked bad clusters | |
198 | ||
199 | u16 max_bytes_per_attr; // maximum attribute size in record | |
200 | u16 attr_size_tr; // attribute size threshold (320 bytes) | |
201 | ||
202 | /* Records in $Extend */ | |
203 | CLST objid_no; | |
204 | CLST quota_no; | |
205 | CLST reparse_no; | |
206 | CLST usn_jrnl_no; | |
207 | ||
208 | struct ATTR_DEF_ENTRY *def_table; // attribute definition table | |
209 | u32 def_entries; | |
210 | u32 ea_max_size; | |
211 | ||
212 | struct MFT_REC *new_rec; | |
213 | ||
214 | u16 *upcase; | |
215 | ||
216 | struct { | |
217 | u64 lbo, lbo2; | |
218 | struct ntfs_inode *ni; | |
219 | struct wnd_bitmap bitmap; // $MFT::Bitmap | |
220 | /* | |
221 | * MFT records [11-24) used to expand MFT itself | |
222 | * They always marked as used in $MFT::Bitmap | |
223 | * 'reserved_bitmap' contains real bitmap of these records | |
224 | */ | |
225 | ulong reserved_bitmap; // bitmap of used records [11 - 24) | |
226 | size_t next_free; // The next record to allocate from | |
227 | size_t used; // mft valid size in records | |
228 | u32 recs_mirr; // Number of records in MFTMirr | |
229 | u8 next_reserved; | |
230 | u8 reserved_bitmap_inited; | |
231 | } mft; | |
232 | ||
233 | struct { | |
234 | struct wnd_bitmap bitmap; // $Bitmap::Data | |
235 | CLST next_free_lcn; | |
236 | } used; | |
237 | ||
238 | struct { | |
239 | u64 size; // in bytes | |
240 | u64 blocks; // in blocks | |
241 | u64 ser_num; | |
242 | struct ntfs_inode *ni; | |
243 | __le16 flags; // cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY | |
244 | u8 major_ver; | |
245 | u8 minor_ver; | |
246 | char label[65]; | |
247 | bool real_dirty; /* real fs state*/ | |
248 | } volume; | |
249 | ||
250 | struct { | |
251 | struct ntfs_index index_sii; | |
252 | struct ntfs_index index_sdh; | |
253 | struct ntfs_inode *ni; | |
254 | u32 next_id; | |
255 | u64 next_off; | |
256 | ||
257 | __le32 def_security_id; | |
258 | } security; | |
259 | ||
260 | struct { | |
261 | struct ntfs_index index_r; | |
262 | struct ntfs_inode *ni; | |
263 | u64 max_size; // 16K | |
264 | } reparse; | |
265 | ||
266 | struct { | |
267 | struct ntfs_index index_o; | |
268 | struct ntfs_inode *ni; | |
269 | } objid; | |
270 | ||
271 | struct { | |
272 | struct mutex mtx_lznt; | |
273 | struct lznt *lznt; | |
274 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
275 | struct mutex mtx_xpress; | |
276 | struct xpress_decompressor *xpress; | |
277 | struct mutex mtx_lzx; | |
278 | struct lzx_decompressor *lzx; | |
279 | #endif | |
280 | } compress; | |
281 | ||
282 | struct ntfs_mount_options options; | |
283 | struct ratelimit_state msg_ratelimit; | |
284 | }; | |
285 | ||
286 | /* | |
287 | * one MFT record(usually 1024 bytes), consists of attributes | |
288 | */ | |
289 | struct mft_inode { | |
290 | struct rb_node node; | |
291 | struct ntfs_sb_info *sbi; | |
292 | ||
293 | struct MFT_REC *mrec; | |
294 | struct ntfs_buffers nb; | |
295 | ||
296 | CLST rno; | |
297 | bool dirty; | |
298 | }; | |
299 | ||
300 | /* nested class for ntfs_inode::ni_lock */ | |
301 | enum ntfs_inode_mutex_lock_class { | |
302 | NTFS_INODE_MUTEX_DIRTY, | |
303 | NTFS_INODE_MUTEX_SECURITY, | |
304 | NTFS_INODE_MUTEX_OBJID, | |
305 | NTFS_INODE_MUTEX_REPARSE, | |
306 | NTFS_INODE_MUTEX_NORMAL, | |
307 | NTFS_INODE_MUTEX_PARENT, | |
308 | }; | |
309 | ||
310 | /* | |
311 | * ntfs inode - extends linux inode. consists of one or more mft inodes | |
312 | */ | |
313 | struct ntfs_inode { | |
314 | struct mft_inode mi; // base record | |
315 | ||
316 | /* | |
317 | * Valid size: [0 - i_valid) - these range in file contains valid data | |
318 | * Range [i_valid - inode->i_size) - contains 0 | |
319 | * Usually i_valid <= inode->i_size | |
320 | */ | |
321 | u64 i_valid; | |
322 | struct timespec64 i_crtime; | |
323 | ||
324 | struct mutex ni_lock; | |
325 | ||
326 | /* file attributes from std */ | |
327 | enum FILE_ATTRIBUTE std_fa; | |
328 | __le32 std_security_id; | |
329 | ||
330 | /* | |
331 | * tree of mft_inode | |
332 | * not empty when primary MFT record (usually 1024 bytes) can't save all attributes | |
333 | * e.g. file becomes too fragmented or contains a lot of names | |
334 | */ | |
335 | struct rb_root mi_tree; | |
336 | ||
337 | /* | |
338 | * This member is used in ntfs_readdir to ensure that all subrecords are loaded | |
339 | */ | |
340 | u8 mi_loaded; | |
341 | ||
342 | union { | |
343 | struct ntfs_index dir; | |
344 | struct { | |
345 | struct rw_semaphore run_lock; | |
346 | struct runs_tree run; | |
347 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
348 | struct page *offs_page; | |
349 | #endif | |
350 | } file; | |
351 | }; | |
352 | ||
353 | struct { | |
354 | struct runs_tree run; | |
355 | struct ATTR_LIST_ENTRY *le; // 1K aligned memory | |
356 | size_t size; | |
357 | bool dirty; | |
358 | } attr_list; | |
359 | ||
360 | size_t ni_flags; // NI_FLAG_XXX | |
361 | ||
362 | struct inode vfs_inode; | |
363 | }; | |
364 | ||
365 | struct indx_node { | |
366 | struct ntfs_buffers nb; | |
367 | struct INDEX_BUFFER *index; | |
368 | }; | |
369 | ||
370 | struct ntfs_fnd { | |
371 | int level; | |
372 | struct indx_node *nodes[20]; | |
373 | struct NTFS_DE *de[20]; | |
374 | struct NTFS_DE *root_de; | |
375 | }; | |
376 | ||
377 | enum REPARSE_SIGN { | |
378 | REPARSE_NONE = 0, | |
379 | REPARSE_COMPRESSED = 1, | |
380 | REPARSE_DEDUPLICATED = 2, | |
381 | REPARSE_LINK = 3 | |
382 | }; | |
383 | ||
384 | /* functions from attrib.c*/ | |
385 | int attr_load_runs(struct ATTRIB *attr, struct ntfs_inode *ni, | |
386 | struct runs_tree *run, const CLST *vcn); | |
387 | int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, | |
388 | CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, | |
389 | enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, | |
390 | CLST *new_lcn); | |
391 | int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, | |
392 | struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, | |
393 | u64 new_size, struct runs_tree *run, | |
394 | struct ATTRIB **ins_attr, struct page *page); | |
395 | int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
396 | const __le16 *name, u8 name_len, struct runs_tree *run, | |
397 | u64 new_size, const u64 *new_valid, bool keep_prealloc, | |
398 | struct ATTRIB **ret); | |
399 | int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, | |
400 | CLST *len, bool *new); | |
401 | int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); | |
402 | int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); | |
403 | int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
404 | const __le16 *name, u8 name_len, struct runs_tree *run, | |
405 | CLST vcn); | |
406 | int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
407 | const __le16 *name, u8 name_len, struct runs_tree *run, | |
408 | u64 from, u64 to); | |
409 | int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, | |
410 | struct runs_tree *run, u64 frame, u64 frames, | |
411 | u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); | |
412 | int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, | |
413 | CLST frame, CLST *clst_data); | |
414 | int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, | |
415 | u64 new_valid); | |
416 | int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); | |
417 | int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); | |
418 | ||
419 | /* functions from attrlist.c*/ | |
420 | void al_destroy(struct ntfs_inode *ni); | |
421 | bool al_verify(struct ntfs_inode *ni); | |
422 | int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); | |
423 | struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, | |
424 | struct ATTR_LIST_ENTRY *le); | |
425 | struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, | |
426 | struct ATTR_LIST_ENTRY *le, | |
427 | const struct ATTRIB *attr); | |
428 | struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, | |
429 | struct ATTR_LIST_ENTRY *le, | |
430 | enum ATTR_TYPE type, const __le16 *name, | |
431 | u8 name_len, const CLST *vcn); | |
432 | int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, | |
433 | u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, | |
434 | struct ATTR_LIST_ENTRY **new_le); | |
435 | bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); | |
436 | bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, | |
437 | const __le16 *name, size_t name_len, | |
438 | const struct MFT_REF *ref); | |
439 | int al_update(struct ntfs_inode *ni); | |
440 | static inline size_t al_aligned(size_t size) | |
441 | { | |
442 | return (size + 1023) & ~(size_t)1023; | |
443 | } | |
444 | ||
445 | /* globals from bitfunc.c */ | |
446 | bool are_bits_clear(const ulong *map, size_t bit, size_t nbits); | |
447 | bool are_bits_set(const ulong *map, size_t bit, size_t nbits); | |
448 | size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits); | |
449 | ||
450 | /* globals from dir.c */ | |
451 | int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const struct le_str *uni, | |
452 | u8 *buf, int buf_len); | |
453 | int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, | |
454 | struct cpu_str *uni, u32 max_ulen, | |
455 | enum utf16_endian endian); | |
456 | struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, | |
457 | struct ntfs_fnd *fnd); | |
458 | bool dir_is_empty(struct inode *dir); | |
459 | extern const struct file_operations ntfs_dir_operations; | |
460 | ||
461 | /* globals from file.c*/ | |
462 | int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path, | |
463 | struct kstat *stat, u32 request_mask, u32 flags); | |
464 | void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, | |
465 | CLST len); | |
466 | int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, | |
467 | struct iattr *attr); | |
468 | int ntfs_file_open(struct inode *inode, struct file *file); | |
469 | int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, | |
470 | __u64 start, __u64 len); | |
471 | extern const struct inode_operations ntfs_special_inode_operations; | |
472 | extern const struct inode_operations ntfs_file_inode_operations; | |
473 | extern const struct file_operations ntfs_file_operations; | |
474 | ||
475 | /* globals from frecord.c */ | |
476 | void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); | |
477 | struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); | |
478 | struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); | |
479 | void ni_clear(struct ntfs_inode *ni); | |
480 | int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); | |
481 | int ni_load_mi(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le, | |
482 | struct mft_inode **mi); | |
483 | struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, | |
484 | struct ATTR_LIST_ENTRY **entry_o, | |
485 | enum ATTR_TYPE type, const __le16 *name, | |
486 | u8 name_len, const CLST *vcn, | |
487 | struct mft_inode **mi); | |
488 | struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, | |
489 | struct ATTR_LIST_ENTRY **le, | |
490 | struct mft_inode **mi); | |
491 | struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
492 | const __le16 *name, u8 name_len, CLST vcn, | |
493 | struct mft_inode **pmi); | |
494 | int ni_load_all_mi(struct ntfs_inode *ni); | |
495 | bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); | |
496 | int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
497 | const __le16 *name, size_t name_len, bool base_only, | |
498 | const __le16 *id); | |
499 | int ni_create_attr_list(struct ntfs_inode *ni); | |
500 | int ni_expand_list(struct ntfs_inode *ni); | |
501 | int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
502 | const __le16 *name, u8 name_len, | |
503 | const struct runs_tree *run, CLST svcn, CLST len, | |
504 | __le16 flags, struct ATTRIB **new_attr, | |
505 | struct mft_inode **mi); | |
506 | int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, | |
507 | enum ATTR_TYPE type, const __le16 *name, u8 name_len, | |
508 | struct ATTRIB **new_attr, struct mft_inode **mi); | |
509 | int ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, | |
510 | struct ATTR_LIST_ENTRY *le); | |
511 | int ni_delete_all(struct ntfs_inode *ni); | |
512 | struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, | |
513 | const struct cpu_str *uni, | |
514 | const struct MFT_REF *home, | |
515 | struct ATTR_LIST_ENTRY **entry); | |
516 | struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, | |
517 | struct ATTR_LIST_ENTRY **entry); | |
518 | int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); | |
519 | enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, | |
520 | void *buffer); | |
521 | int ni_write_inode(struct inode *inode, int sync, const char *hint); | |
522 | #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) | |
523 | int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, | |
524 | __u64 vbo, __u64 len); | |
525 | int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); | |
526 | int ni_decompress_file(struct ntfs_inode *ni); | |
527 | int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, | |
528 | u32 pages_per_frame); | |
529 | int ni_write_frame(struct ntfs_inode *ni, struct page **pages, | |
530 | u32 pages_per_frame); | |
531 | ||
532 | /* globals from fslog.c */ | |
533 | int log_replay(struct ntfs_inode *ni, bool *initialized); | |
534 | ||
535 | /* globals from fsntfs.c */ | |
536 | bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); | |
537 | int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, | |
538 | bool simple); | |
539 | int ntfs_extend_init(struct ntfs_sb_info *sbi); | |
540 | int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); | |
541 | const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi, | |
542 | enum ATTR_TYPE Type); | |
543 | int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, | |
544 | CLST *new_lcn, CLST *new_len, | |
545 | enum ALLOCATE_OPT opt); | |
546 | int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, | |
547 | struct ntfs_inode *ni, struct mft_inode **mi); | |
548 | void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno); | |
549 | int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); | |
550 | int ntfs_refresh_zone(struct ntfs_sb_info *sbi); | |
551 | int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); | |
552 | enum NTFS_DIRTY_FLAGS { | |
553 | NTFS_DIRTY_CLEAR = 0, | |
554 | NTFS_DIRTY_DIRTY = 1, | |
555 | NTFS_DIRTY_ERROR = 2, | |
556 | }; | |
557 | int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); | |
558 | int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); | |
559 | int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, | |
560 | const void *buffer, int wait); | |
561 | int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, | |
562 | u64 vbo, const void *buf, size_t bytes); | |
563 | struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, | |
564 | const struct runs_tree *run, u64 vbo); | |
565 | int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, | |
566 | u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); | |
567 | int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, | |
568 | struct NTFS_RECORD_HEADER *rhdr, u32 bytes, | |
569 | struct ntfs_buffers *nb); | |
570 | int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, | |
571 | u32 bytes, struct ntfs_buffers *nb); | |
572 | int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, | |
573 | struct ntfs_buffers *nb, int sync); | |
574 | int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, | |
575 | struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, | |
576 | u32 op); | |
577 | int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); | |
578 | int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, | |
579 | u64 vbo, u64 *lbo, u64 *bytes); | |
580 | struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, | |
581 | bool dir); | |
582 | extern const u8 s_default_security[0x50]; | |
583 | bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); | |
584 | int ntfs_security_init(struct ntfs_sb_info *sbi); | |
585 | int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, | |
586 | struct SECURITY_DESCRIPTOR_RELATIVE **sd, | |
587 | size_t *size); | |
588 | int ntfs_insert_security(struct ntfs_sb_info *sbi, | |
589 | const struct SECURITY_DESCRIPTOR_RELATIVE *sd, | |
590 | u32 size, __le32 *security_id, bool *inserted); | |
591 | int ntfs_reparse_init(struct ntfs_sb_info *sbi); | |
592 | int ntfs_objid_init(struct ntfs_sb_info *sbi); | |
593 | int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); | |
594 | int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, | |
595 | const struct MFT_REF *ref); | |
596 | int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, | |
597 | const struct MFT_REF *ref); | |
598 | void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); | |
599 | int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim); | |
600 | ||
601 | /* globals from index.c */ | |
602 | int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); | |
603 | void fnd_clear(struct ntfs_fnd *fnd); | |
604 | static inline struct ntfs_fnd *fnd_get(void) | |
605 | { | |
195c52bd | 606 | return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); |
4534a70b KK |
607 | } |
608 | static inline void fnd_put(struct ntfs_fnd *fnd) | |
609 | { | |
610 | if (fnd) { | |
611 | fnd_clear(fnd); | |
195c52bd | 612 | kfree(fnd); |
4534a70b KK |
613 | } |
614 | } | |
615 | void indx_clear(struct ntfs_index *idx); | |
616 | int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, | |
617 | const struct ATTRIB *attr, enum index_mutex_classed type); | |
618 | struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, | |
619 | struct ATTRIB **attr, struct mft_inode **mi); | |
620 | int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, | |
621 | struct indx_node **node); | |
622 | int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, | |
623 | const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, | |
624 | const void *param, int *diff, struct NTFS_DE **entry, | |
625 | struct ntfs_fnd *fnd); | |
626 | int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, | |
627 | const struct INDEX_ROOT *root, struct NTFS_DE **entry, | |
628 | struct ntfs_fnd *fnd); | |
629 | int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, | |
630 | const struct INDEX_ROOT *root, struct NTFS_DE **entry, | |
631 | size_t *off, struct ntfs_fnd *fnd); | |
632 | int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, | |
633 | const struct NTFS_DE *new_de, const void *param, | |
634 | struct ntfs_fnd *fnd); | |
635 | int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, | |
636 | const void *key, u32 key_len, const void *param); | |
637 | int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, | |
638 | const struct ATTR_FILE_NAME *fname, | |
639 | const struct NTFS_DUP_INFO *dup, int sync); | |
640 | ||
641 | /* globals from inode.c */ | |
642 | struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, | |
643 | const struct cpu_str *name); | |
644 | int ntfs_set_size(struct inode *inode, u64 new_size); | |
645 | int reset_log_file(struct inode *inode); | |
646 | int ntfs_get_block(struct inode *inode, sector_t vbn, | |
647 | struct buffer_head *bh_result, int create); | |
648 | int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); | |
649 | int ntfs_sync_inode(struct inode *inode); | |
650 | int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, | |
651 | struct inode *i2); | |
652 | int inode_write_data(struct inode *inode, const void *data, size_t bytes); | |
653 | struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, | |
654 | struct inode *dir, struct dentry *dentry, | |
655 | const struct cpu_str *uni, umode_t mode, | |
656 | dev_t dev, const char *symname, u32 size, | |
657 | struct ntfs_fnd *fnd); | |
658 | int ntfs_link_inode(struct inode *inode, struct dentry *dentry); | |
659 | int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); | |
660 | void ntfs_evict_inode(struct inode *inode); | |
661 | extern const struct inode_operations ntfs_link_inode_operations; | |
662 | extern const struct address_space_operations ntfs_aops; | |
663 | extern const struct address_space_operations ntfs_aops_cmpr; | |
664 | ||
665 | /* globals from name_i.c*/ | |
666 | int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, | |
667 | const struct cpu_str *uni); | |
668 | struct dentry *ntfs3_get_parent(struct dentry *child); | |
669 | ||
670 | extern const struct inode_operations ntfs_dir_inode_operations; | |
671 | extern const struct inode_operations ntfs_special_inode_operations; | |
672 | ||
673 | /* globals from record.c */ | |
674 | int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); | |
675 | void mi_put(struct mft_inode *mi); | |
676 | int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); | |
677 | int mi_read(struct mft_inode *mi, bool is_mft); | |
678 | struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); | |
679 | // TODO: id? | |
680 | struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, | |
681 | enum ATTR_TYPE type, const __le16 *name, | |
682 | size_t name_len, const __le16 *id); | |
683 | static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, | |
684 | struct ATTR_LIST_ENTRY *le) | |
685 | { | |
686 | return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, | |
687 | &le->id); | |
688 | } | |
689 | int mi_write(struct mft_inode *mi, int wait); | |
690 | int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, | |
691 | __le16 flags, bool is_mft); | |
692 | void mi_mark_free(struct mft_inode *mi); | |
693 | struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, | |
694 | const __le16 *name, u8 name_len, u32 asize, | |
695 | u16 name_off); | |
696 | ||
697 | bool mi_remove_attr(struct mft_inode *mi, struct ATTRIB *attr); | |
698 | bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); | |
699 | int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, | |
700 | struct runs_tree *run, CLST len); | |
701 | static inline bool mi_is_ref(const struct mft_inode *mi, | |
702 | const struct MFT_REF *ref) | |
703 | { | |
704 | if (le32_to_cpu(ref->low) != mi->rno) | |
705 | return false; | |
706 | if (ref->seq != mi->mrec->seq) | |
707 | return false; | |
708 | ||
709 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER | |
710 | return le16_to_cpu(ref->high) == (mi->rno >> 32); | |
711 | #else | |
712 | return !ref->high; | |
713 | #endif | |
714 | } | |
715 | ||
716 | static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) | |
717 | { | |
718 | ref->low = cpu_to_le32(mi->rno); | |
719 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER | |
720 | ref->high = cpu_to_le16(mi->rno >> 32); | |
721 | #else | |
722 | ref->high = 0; | |
723 | #endif | |
724 | ref->seq = mi->mrec->seq; | |
725 | } | |
726 | ||
727 | /* globals from run.c */ | |
728 | bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, | |
729 | CLST *len, size_t *index); | |
730 | void run_truncate(struct runs_tree *run, CLST vcn); | |
731 | void run_truncate_head(struct runs_tree *run, CLST vcn); | |
732 | void run_truncate_around(struct runs_tree *run, CLST vcn); | |
733 | bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *Index); | |
734 | bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, | |
735 | bool is_mft); | |
736 | bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); | |
737 | bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, | |
738 | CLST *lcn, CLST *len); | |
739 | bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); | |
740 | ||
741 | int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, | |
742 | u32 run_buf_size, CLST *packed_vcns); | |
743 | int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, | |
744 | CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, | |
745 | u32 run_buf_size); | |
746 | ||
747 | #ifdef NTFS3_CHECK_FREE_CLST | |
748 | int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, | |
749 | CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, | |
750 | u32 run_buf_size); | |
751 | #else | |
752 | #define run_unpack_ex run_unpack | |
753 | #endif | |
754 | int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); | |
755 | ||
756 | /* globals from super.c */ | |
757 | void *ntfs_set_shared(void *ptr, u32 bytes); | |
758 | void *ntfs_put_shared(void *ptr); | |
759 | void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); | |
760 | int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); | |
761 | ||
762 | /* globals from bitmap.c*/ | |
763 | int __init ntfs3_init_bitmap(void); | |
764 | void ntfs3_exit_bitmap(void); | |
765 | void wnd_close(struct wnd_bitmap *wnd); | |
766 | static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) | |
767 | { | |
768 | return wnd->total_zeroes; | |
769 | } | |
770 | int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); | |
771 | int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); | |
772 | int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); | |
773 | bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); | |
774 | bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); | |
775 | ||
776 | /* Possible values for 'flags' 'wnd_find' */ | |
777 | #define BITMAP_FIND_MARK_AS_USED 0x01 | |
778 | #define BITMAP_FIND_FULL 0x02 | |
779 | size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, | |
780 | size_t flags, size_t *allocated); | |
781 | int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); | |
782 | void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); | |
783 | int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); | |
784 | ||
785 | /* globals from upcase.c */ | |
786 | int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, | |
787 | const u16 *upcase, bool bothcase); | |
788 | int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, | |
789 | const u16 *upcase, bool bothcase); | |
790 | ||
791 | /* globals from xattr.c */ | |
792 | #ifdef CONFIG_NTFS3_FS_POSIX_ACL | |
793 | struct posix_acl *ntfs_get_acl(struct inode *inode, int type); | |
794 | int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, | |
795 | struct posix_acl *acl, int type); | |
796 | int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, | |
797 | struct inode *dir); | |
798 | #else | |
799 | #define ntfs_get_acl NULL | |
800 | #define ntfs_set_acl NULL | |
801 | #endif | |
802 | ||
803 | int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode); | |
804 | int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode, | |
805 | int mask); | |
806 | ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
807 | extern const struct xattr_handler *ntfs_xattr_handlers[]; | |
808 | ||
809 | int ntfs_save_wsl_perm(struct inode *inode); | |
810 | void ntfs_get_wsl_perm(struct inode *inode); | |
811 | ||
812 | /* globals from lznt.c */ | |
813 | struct lznt *get_lznt_ctx(int level); | |
814 | size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, | |
815 | void *compressed, size_t compressed_size, | |
816 | struct lznt *ctx); | |
817 | ssize_t decompress_lznt(const void *compressed, size_t compressed_size, | |
818 | void *uncompressed, size_t uncompressed_size); | |
819 | ||
820 | static inline bool is_ntfs3(struct ntfs_sb_info *sbi) | |
821 | { | |
822 | return sbi->volume.major_ver >= 3; | |
823 | } | |
824 | ||
825 | /*(sb->s_flags & SB_ACTIVE)*/ | |
826 | static inline bool is_mounted(struct ntfs_sb_info *sbi) | |
827 | { | |
828 | return !!sbi->sb->s_root; | |
829 | } | |
830 | ||
831 | static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) | |
832 | { | |
833 | return rno < MFT_REC_FREE || rno == sbi->objid_no || | |
834 | rno == sbi->quota_no || rno == sbi->reparse_no || | |
835 | rno == sbi->usn_jrnl_no; | |
836 | } | |
837 | ||
838 | static inline void ntfs_unmap_page(struct page *page) | |
839 | { | |
840 | kunmap(page); | |
841 | put_page(page); | |
842 | } | |
843 | ||
844 | static inline struct page *ntfs_map_page(struct address_space *mapping, | |
845 | unsigned long index) | |
846 | { | |
847 | struct page *page = read_mapping_page(mapping, index, NULL); | |
848 | ||
849 | if (!IS_ERR(page)) { | |
850 | kmap(page); | |
851 | if (!PageError(page)) | |
852 | return page; | |
853 | ntfs_unmap_page(page); | |
854 | return ERR_PTR(-EIO); | |
855 | } | |
856 | return page; | |
857 | } | |
858 | ||
859 | static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) | |
860 | { | |
861 | return wnd->zone_bit; | |
862 | } | |
863 | ||
864 | static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) | |
865 | { | |
866 | return wnd->zone_end - wnd->zone_bit; | |
867 | } | |
868 | ||
869 | static inline void run_init(struct runs_tree *run) | |
870 | { | |
871 | run->runs = NULL; | |
872 | run->count = 0; | |
873 | run->allocated = 0; | |
874 | } | |
875 | ||
876 | static inline struct runs_tree *run_alloc(void) | |
877 | { | |
195c52bd | 878 | return kzalloc(sizeof(struct runs_tree), GFP_NOFS); |
4534a70b KK |
879 | } |
880 | ||
881 | static inline void run_close(struct runs_tree *run) | |
882 | { | |
195c52bd | 883 | kvfree(run->runs); |
4534a70b KK |
884 | memset(run, 0, sizeof(*run)); |
885 | } | |
886 | ||
887 | static inline void run_free(struct runs_tree *run) | |
888 | { | |
889 | if (run) { | |
195c52bd KA |
890 | kvfree(run->runs); |
891 | kfree(run); | |
4534a70b KK |
892 | } |
893 | } | |
894 | ||
895 | static inline bool run_is_empty(struct runs_tree *run) | |
896 | { | |
897 | return !run->count; | |
898 | } | |
899 | ||
900 | /* NTFS uses quad aligned bitmaps */ | |
901 | static inline size_t bitmap_size(size_t bits) | |
902 | { | |
fa3cacf5 | 903 | return ALIGN((bits + 7) >> 3, 8); |
4534a70b KK |
904 | } |
905 | ||
906 | #define _100ns2seconds 10000000 | |
907 | #define SecondsToStartOf1970 0x00000002B6109100 | |
908 | ||
909 | #define NTFS_TIME_GRAN 100 | |
910 | ||
911 | /* | |
912 | * kernel2nt | |
913 | * | |
914 | * converts in-memory kernel timestamp into nt time | |
915 | */ | |
916 | static inline __le64 kernel2nt(const struct timespec64 *ts) | |
917 | { | |
918 | // 10^7 units of 100 nanoseconds one second | |
919 | return cpu_to_le64(_100ns2seconds * | |
920 | (ts->tv_sec + SecondsToStartOf1970) + | |
921 | ts->tv_nsec / NTFS_TIME_GRAN); | |
922 | } | |
923 | ||
924 | /* | |
925 | * nt2kernel | |
926 | * | |
927 | * converts on-disk nt time into kernel timestamp | |
928 | */ | |
929 | static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) | |
930 | { | |
931 | u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; | |
932 | ||
933 | // WARNING: do_div changes its first argument(!) | |
934 | ts->tv_nsec = do_div(t, _100ns2seconds) * 100; | |
935 | ts->tv_sec = t; | |
936 | } | |
937 | ||
938 | static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) | |
939 | { | |
940 | return sb->s_fs_info; | |
941 | } | |
942 | ||
943 | /* Align up on cluster boundary */ | |
944 | static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) | |
945 | { | |
946 | return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; | |
947 | } | |
948 | ||
949 | /* Align up on cluster boundary */ | |
950 | static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) | |
951 | { | |
952 | return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); | |
953 | } | |
954 | ||
955 | static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) | |
956 | { | |
957 | return (size + sbi->cluster_mask) >> sbi->cluster_bits; | |
958 | } | |
959 | ||
960 | static inline u64 bytes_to_block(const struct super_block *sb, u64 size) | |
961 | { | |
962 | return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
963 | } | |
964 | ||
965 | static inline struct buffer_head *ntfs_bread(struct super_block *sb, | |
966 | sector_t block) | |
967 | { | |
968 | struct buffer_head *bh = sb_bread(sb, block); | |
969 | ||
970 | if (bh) | |
971 | return bh; | |
972 | ||
973 | ntfs_err(sb, "failed to read volume at offset 0x%llx", | |
974 | (u64)block << sb->s_blocksize_bits); | |
975 | return NULL; | |
976 | } | |
977 | ||
4534a70b KK |
978 | static inline struct ntfs_inode *ntfs_i(struct inode *inode) |
979 | { | |
980 | return container_of(inode, struct ntfs_inode, vfs_inode); | |
981 | } | |
982 | ||
983 | static inline bool is_compressed(const struct ntfs_inode *ni) | |
984 | { | |
985 | return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || | |
986 | (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); | |
987 | } | |
988 | ||
989 | static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) | |
990 | { | |
991 | return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); | |
992 | } | |
993 | ||
994 | /* bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ | |
995 | static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) | |
996 | { | |
997 | ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; | |
998 | } | |
999 | ||
1000 | static inline bool is_dedup(const struct ntfs_inode *ni) | |
1001 | { | |
1002 | return ni->ni_flags & NI_FLAG_DEDUPLICATED; | |
1003 | } | |
1004 | ||
1005 | static inline bool is_encrypted(const struct ntfs_inode *ni) | |
1006 | { | |
1007 | return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; | |
1008 | } | |
1009 | ||
1010 | static inline bool is_sparsed(const struct ntfs_inode *ni) | |
1011 | { | |
1012 | return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; | |
1013 | } | |
1014 | ||
1015 | static inline int is_resident(struct ntfs_inode *ni) | |
1016 | { | |
1017 | return ni->ni_flags & NI_FLAG_RESIDENT; | |
1018 | } | |
1019 | ||
1020 | static inline void le16_sub_cpu(__le16 *var, u16 val) | |
1021 | { | |
1022 | *var = cpu_to_le16(le16_to_cpu(*var) - val); | |
1023 | } | |
1024 | ||
1025 | static inline void le32_sub_cpu(__le32 *var, u32 val) | |
1026 | { | |
1027 | *var = cpu_to_le32(le32_to_cpu(*var) - val); | |
1028 | } | |
1029 | ||
1030 | static inline void nb_put(struct ntfs_buffers *nb) | |
1031 | { | |
1032 | u32 i, nbufs = nb->nbufs; | |
1033 | ||
1034 | if (!nbufs) | |
1035 | return; | |
1036 | ||
1037 | for (i = 0; i < nbufs; i++) | |
1038 | put_bh(nb->bh[i]); | |
1039 | nb->nbufs = 0; | |
1040 | } | |
1041 | ||
1042 | static inline void put_indx_node(struct indx_node *in) | |
1043 | { | |
1044 | if (!in) | |
1045 | return; | |
1046 | ||
195c52bd | 1047 | kfree(in->index); |
4534a70b | 1048 | nb_put(&in->nb); |
195c52bd | 1049 | kfree(in); |
4534a70b KK |
1050 | } |
1051 | ||
1052 | static inline void mi_clear(struct mft_inode *mi) | |
1053 | { | |
1054 | nb_put(&mi->nb); | |
195c52bd | 1055 | kfree(mi->mrec); |
4534a70b KK |
1056 | mi->mrec = NULL; |
1057 | } | |
1058 | ||
1059 | static inline void ni_lock(struct ntfs_inode *ni) | |
1060 | { | |
1061 | mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); | |
1062 | } | |
1063 | ||
1064 | static inline void ni_lock_dir(struct ntfs_inode *ni) | |
1065 | { | |
1066 | mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); | |
1067 | } | |
1068 | ||
1069 | static inline void ni_unlock(struct ntfs_inode *ni) | |
1070 | { | |
1071 | mutex_unlock(&ni->ni_lock); | |
1072 | } | |
1073 | ||
1074 | static inline int ni_trylock(struct ntfs_inode *ni) | |
1075 | { | |
1076 | return mutex_trylock(&ni->ni_lock); | |
1077 | } | |
1078 | ||
1079 | static inline int attr_load_runs_attr(struct ntfs_inode *ni, | |
1080 | struct ATTRIB *attr, | |
1081 | struct runs_tree *run, CLST vcn) | |
1082 | { | |
1083 | return attr_load_runs_vcn(ni, attr->type, attr_name(attr), | |
1084 | attr->name_len, run, vcn); | |
1085 | } | |
1086 | ||
1087 | static inline void le64_sub_cpu(__le64 *var, u64 val) | |
1088 | { | |
1089 | *var = cpu_to_le64(le64_to_cpu(*var) - val); | |
1090 | } | |
87790b65 KA |
1091 | |
1092 | #endif /* _LINUX_NTFS3_NTFS_FS_H */ |