1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * |
4 | * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. |
5 | * |
6 | */ |
7 | |
8 | // clang-format off |
9 | #ifndef _LINUX_NTFS3_NTFS_FS_H |
10 | #define _LINUX_NTFS3_NTFS_FS_H |
11 | |
12 | #include <linux/blkdev.h> |
13 | #include <linux/buffer_head.h> |
14 | #include <linux/fs.h> |
15 | #include <linux/highmem.h> |
16 | #include <linux/kernel.h> |
17 | #include <linux/mm.h> |
18 | #include <linux/mutex.h> |
19 | #include <linux/page-flags.h> |
20 | #include <linux/pagemap.h> |
21 | #include <linux/rbtree.h> |
22 | #include <linux/rwsem.h> |
23 | #include <linux/slab.h> |
24 | #include <linux/string.h> |
25 | #include <linux/time64.h> |
26 | #include <linux/types.h> |
27 | #include <linux/uidgid.h> |
28 | #include <asm/div64.h> |
29 | #include <asm/page.h> |
30 | |
31 | #include "debug.h" |
32 | #include "ntfs.h" |
33 | |
34 | struct dentry; |
35 | struct fiemap_extent_info; |
36 | struct user_namespace; |
37 | struct page; |
38 | struct writeback_control; |
39 | enum utf16_endian; |
40 | |
41 | |
42 | #define MINUS_ONE_T ((size_t)(-1)) |
43 | /* Biggest MFT / smallest cluster */ |
44 | #define MAXIMUM_BYTES_PER_MFT 4096 |
45 | #define MAXIMUM_SHIFT_BYTES_PER_MFT 12 |
46 | #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) |
47 | |
48 | #define MAXIMUM_BYTES_PER_INDEX 4096 |
49 | #define MAXIMUM_SHIFT_BYTES_PER_INDEX 12 |
50 | #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) |
51 | |
52 | /* NTFS specific error code when fixup failed. */ |
53 | #define E_NTFS_FIXUP 555 |
54 | /* NTFS specific error code about resident->nonresident. */ |
55 | #define E_NTFS_NONRESIDENT 556 |
56 | /* NTFS specific error code about punch hole. */ |
57 | #define E_NTFS_NOTALIGNED 557 |
58 | /* NTFS specific error code when on-disk struct is corrupted. */ |
59 | #define E_NTFS_CORRUPT 558 |
60 | |
61 | |
62 | /* sbi->flags */ |
63 | #define NTFS_FLAGS_NODISCARD 0x00000001 |
64 | /* ntfs in shutdown state. */ |
65 | #define NTFS_FLAGS_SHUTDOWN_BIT 0x00000002 /* == 4*/ |
66 | /* Set when LogFile is replaying. */ |
67 | #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 |
68 | /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ |
69 | #define NTFS_FLAGS_MFTMIRR 0x00001000 |
70 | #define NTFS_FLAGS_NEED_REPLAY 0x04000000 |
71 | |
72 | |
73 | /* ni->ni_flags */ |
74 | /* |
75 | * Data attribute is external compressed (LZX/Xpress) |
76 | * 1 - WOF_COMPRESSION_XPRESS4K |
77 | * 2 - WOF_COMPRESSION_XPRESS8K |
78 | * 3 - WOF_COMPRESSION_XPRESS16K |
79 | * 4 - WOF_COMPRESSION_LZX32K |
80 | */ |
81 | #define NI_FLAG_COMPRESSED_MASK 0x0000000f |
82 | /* Data attribute is deduplicated. */ |
83 | #define NI_FLAG_DEDUPLICATED 0x00000010 |
84 | #define NI_FLAG_EA 0x00000020 |
85 | #define NI_FLAG_DIR 0x00000040 |
86 | #define NI_FLAG_RESIDENT 0x00000080 |
87 | #define NI_FLAG_UPDATE_PARENT 0x00000100 |
88 | // clang-format on |
89 | |
90 | struct ntfs_mount_options { |
91 | char *nls_name; |
92 | struct nls_table *nls; |
93 | |
94 | kuid_t fs_uid; |
95 | kgid_t fs_gid; |
96 | u16 fs_fmask_inv; |
97 | u16 fs_dmask_inv; |
98 | |
99 | unsigned fmask : 1; /* fmask was set. */ |
100 | unsigned dmask : 1; /*dmask was set. */ |
101 | unsigned sys_immutable : 1; /* Immutable system files. */ |
102 | unsigned discard : 1; /* Issue discard requests on deletions. */ |
103 | unsigned sparse : 1; /* Create sparse files. */ |
104 | unsigned showmeta : 1; /* Show meta files. */ |
105 | unsigned nohidden : 1; /* Do not show hidden files. */ |
106 | unsigned hide_dot_files : 1; /* Set hidden flag on dot files. */ |
107 | unsigned windows_names : 1; /* Disallow names forbidden by Windows. */ |
108 | unsigned force : 1; /* RW mount dirty volume. */ |
109 | unsigned prealloc : 1; /* Preallocate space when file is growing. */ |
110 | unsigned nocase : 1; /* case insensitive. */ |
111 | }; |
112 | |
113 | /* Special value to unpack and deallocate. */ |
114 | #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) |
115 | |
116 | /* TODO: Use rb tree instead of array. */ |
117 | struct runs_tree { |
118 | struct ntfs_run *runs; |
119 | size_t count; /* Currently used size a ntfs_run storage. */ |
120 | size_t allocated; /* Currently allocated ntfs_run storage size. */ |
121 | }; |
122 | |
123 | struct ntfs_buffers { |
124 | /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ |
125 | /* Biggest index / smallest cluster = 4096 / 512 = 8 */ |
126 | struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; |
127 | u32 bytes; |
128 | u32 nbufs; |
129 | u32 off; |
130 | }; |
131 | |
132 | enum ALLOCATE_OPT { |
133 | ALLOCATE_DEF = 0, // Allocate all clusters. |
134 | ALLOCATE_MFT = 1, // Allocate for MFT. |
135 | ALLOCATE_ZERO = 2, // Zeroout new allocated clusters |
136 | }; |
137 | |
138 | enum bitmap_mutex_classes { |
139 | BITMAP_MUTEX_CLUSTERS = 0, |
140 | BITMAP_MUTEX_MFT = 1, |
141 | }; |
142 | |
143 | struct wnd_bitmap { |
144 | struct super_block *sb; |
145 | struct rw_semaphore rw_lock; |
146 | |
147 | struct runs_tree run; |
148 | size_t nbits; |
149 | |
150 | size_t total_zeroes; // Total number of free bits. |
151 | u16 *free_bits; // Free bits in each window. |
152 | size_t nwnd; |
153 | u32 bits_last; // Bits in last window. |
154 | |
155 | struct rb_root start_tree; // Extents, sorted by 'start'. |
156 | struct rb_root count_tree; // Extents, sorted by 'count + start'. |
157 | size_t count; // Extents count. |
158 | |
159 | /* |
160 | * -1 Tree is activated but not updated (too many fragments). |
161 | * 0 - Tree is not activated. |
162 | * 1 - Tree is activated and updated. |
163 | */ |
164 | int uptodated; |
165 | size_t extent_min; // Minimal extent used while building. |
166 | size_t extent_max; // Upper estimate of biggest free block. |
167 | |
168 | /* Zone [bit, end) */ |
169 | size_t zone_bit; |
170 | size_t zone_end; |
171 | |
172 | bool inited; |
173 | }; |
174 | |
175 | typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, |
176 | size_t len2, const void *param); |
177 | |
178 | enum index_mutex_classed { |
179 | INDEX_MUTEX_I30 = 0, |
180 | INDEX_MUTEX_SII = 1, |
181 | INDEX_MUTEX_SDH = 2, |
182 | INDEX_MUTEX_SO = 3, |
183 | INDEX_MUTEX_SQ = 4, |
184 | INDEX_MUTEX_SR = 5, |
185 | INDEX_MUTEX_TOTAL |
186 | }; |
187 | |
188 | /* ntfs_index - Allocation unit inside directory. */ |
189 | struct ntfs_index { |
190 | struct runs_tree bitmap_run; |
191 | struct runs_tree alloc_run; |
192 | /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ |
193 | struct rw_semaphore run_lock; |
194 | |
195 | /*TODO: Remove 'cmp'. */ |
196 | NTFS_CMP_FUNC cmp; |
197 | |
198 | u8 index_bits; // log2(root->index_block_size) |
199 | u8 idx2vbn_bits; // log2(root->index_block_clst) |
200 | u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits |
201 | u8 type; // index_mutex_classed |
202 | }; |
203 | |
204 | /* Minimum MFT zone. */ |
205 | #define NTFS_MIN_MFT_ZONE 100 |
206 | /* Step to increase the MFT. */ |
207 | #define NTFS_MFT_INCREASE_STEP 1024 |
208 | |
209 | /* Ntfs file system in-core superblock data. */ |
210 | struct ntfs_sb_info { |
211 | struct super_block *sb; |
212 | |
213 | u32 discard_granularity; |
214 | u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) |
215 | |
216 | u32 cluster_size; // bytes per cluster |
217 | u32 cluster_mask; // == cluster_size - 1 |
218 | u64 cluster_mask_inv; // ~(cluster_size - 1) |
219 | u32 block_mask; // sb->s_blocksize - 1 |
220 | u32 blocks_per_cluster; // cluster_size / sb->s_blocksize |
221 | |
222 | u32 record_size; |
223 | u32 index_size; |
224 | |
225 | u8 cluster_bits; |
226 | u8 record_bits; |
227 | |
228 | u64 maxbytes; // Maximum size for normal files. |
229 | u64 maxbytes_sparse; // Maximum size for sparse file. |
230 | |
231 | unsigned long flags; // See NTFS_FLAGS_ |
232 | |
233 | CLST zone_max; // Maximum MFT zone length in clusters |
234 | CLST bad_clusters; // The count of marked bad clusters. |
235 | |
236 | u16 max_bytes_per_attr; // Maximum attribute size in record. |
237 | u16 attr_size_tr; // Attribute size threshold (320 bytes). |
238 | |
239 | /* Records in $Extend. */ |
240 | CLST objid_no; |
241 | CLST quota_no; |
242 | CLST reparse_no; |
243 | CLST usn_jrnl_no; |
244 | |
245 | struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. |
246 | u32 def_entries; |
247 | u32 ea_max_size; |
248 | |
249 | struct MFT_REC *new_rec; |
250 | |
251 | u16 *upcase; |
252 | |
253 | struct { |
254 | u64 lbo, lbo2; |
255 | struct ntfs_inode *ni; |
256 | struct wnd_bitmap bitmap; // $MFT::Bitmap |
257 | /* |
258 | * MFT records [11-24) used to expand MFT itself. |
259 | * They always marked as used in $MFT::Bitmap |
260 | * 'reserved_bitmap' contains real bitmap of these records. |
261 | */ |
262 | ulong reserved_bitmap; // Bitmap of used records [11 - 24) |
263 | size_t next_free; // The next record to allocate from |
264 | size_t used; // MFT valid size in records. |
265 | u32 recs_mirr; // Number of records in MFTMirr |
266 | u8 next_reserved; |
267 | u8 reserved_bitmap_inited; |
268 | } mft; |
269 | |
270 | struct { |
271 | struct wnd_bitmap bitmap; // $Bitmap::Data |
272 | CLST next_free_lcn; |
273 | } used; |
274 | |
275 | struct { |
276 | u64 size; // In bytes. |
277 | u64 blocks; // In blocks. |
278 | u64 ser_num; |
279 | struct ntfs_inode *ni; |
280 | __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. |
281 | u8 major_ver; |
282 | u8 minor_ver; |
283 | char label[256]; |
284 | bool real_dirty; // Real fs state. |
285 | } volume; |
286 | |
287 | struct { |
288 | struct ntfs_index index_sii; |
289 | struct ntfs_index index_sdh; |
290 | struct ntfs_inode *ni; |
291 | u32 next_id; |
292 | u64 next_off; |
293 | __le32 def_security_id; |
294 | } security; |
295 | |
296 | struct { |
297 | struct ntfs_index index_r; |
298 | struct ntfs_inode *ni; |
299 | u64 max_size; // 16K |
300 | } reparse; |
301 | |
302 | struct { |
303 | struct ntfs_index index_o; |
304 | struct ntfs_inode *ni; |
305 | } objid; |
306 | |
307 | struct { |
308 | struct mutex mtx_lznt; |
309 | struct lznt *lznt; |
310 | #ifdef CONFIG_NTFS3_LZX_XPRESS |
311 | struct mutex mtx_xpress; |
312 | struct xpress_decompressor *xpress; |
313 | struct mutex mtx_lzx; |
314 | struct lzx_decompressor *lzx; |
315 | #endif |
316 | } compress; |
317 | |
318 | struct ntfs_mount_options *options; |
319 | struct ratelimit_state msg_ratelimit; |
320 | struct proc_dir_entry *procdir; |
321 | }; |
322 | |
323 | /* One MFT record(usually 1024 bytes), consists of attributes. */ |
324 | struct mft_inode { |
325 | struct rb_node node; |
326 | struct ntfs_sb_info *sbi; |
327 | |
328 | struct MFT_REC *mrec; |
329 | struct ntfs_buffers nb; |
330 | |
331 | CLST rno; |
332 | bool dirty; |
333 | }; |
334 | |
335 | /* Nested class for ntfs_inode::ni_lock. */ |
336 | enum ntfs_inode_mutex_lock_class { |
337 | NTFS_INODE_MUTEX_DIRTY, |
338 | NTFS_INODE_MUTEX_SECURITY, |
339 | NTFS_INODE_MUTEX_OBJID, |
340 | NTFS_INODE_MUTEX_REPARSE, |
341 | NTFS_INODE_MUTEX_NORMAL, |
342 | NTFS_INODE_MUTEX_PARENT, |
343 | NTFS_INODE_MUTEX_PARENT2, |
344 | }; |
345 | |
346 | /* |
347 | * struct ntfs_inode |
348 | * |
349 | * Ntfs inode - extends linux inode. consists of one or more MFT inodes. |
350 | */ |
351 | struct ntfs_inode { |
352 | struct mft_inode mi; // base record |
353 | |
354 | /* |
355 | * Valid size: [0 - i_valid) - these range in file contains valid data. |
356 | * Range [i_valid - inode->i_size) - contains 0. |
357 | * Usually i_valid <= inode->i_size. |
358 | */ |
359 | u64 i_valid; |
360 | struct timespec64 i_crtime; |
361 | |
362 | struct mutex ni_lock; |
363 | |
364 | /* File attributes from std. */ |
365 | enum FILE_ATTRIBUTE std_fa; |
366 | __le32 std_security_id; |
367 | |
368 | /* |
369 | * Tree of mft_inode. |
370 | * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes |
371 | * e.g. file becomes too fragmented or contains a lot of names. |
372 | */ |
373 | struct rb_root mi_tree; |
374 | |
375 | /* |
376 | * This member is used in ntfs_readdir to ensure that all subrecords are loaded |
377 | */ |
378 | u8 mi_loaded; |
379 | |
380 | union { |
381 | struct ntfs_index dir; |
382 | struct { |
383 | struct rw_semaphore run_lock; |
384 | struct runs_tree run; |
385 | #ifdef CONFIG_NTFS3_LZX_XPRESS |
386 | struct page *offs_page; |
387 | #endif |
388 | } file; |
389 | }; |
390 | |
391 | struct { |
392 | struct runs_tree run; |
393 | struct ATTR_LIST_ENTRY *le; // 1K aligned memory. |
394 | size_t size; |
395 | bool dirty; |
396 | } attr_list; |
397 | |
398 | size_t ni_flags; // NI_FLAG_XXX |
399 | |
400 | struct inode vfs_inode; |
401 | }; |
402 | |
403 | struct indx_node { |
404 | struct ntfs_buffers nb; |
405 | struct INDEX_BUFFER *index; |
406 | }; |
407 | |
408 | struct ntfs_fnd { |
409 | int level; |
410 | struct indx_node *nodes[20]; |
411 | struct NTFS_DE *de[20]; |
412 | struct NTFS_DE *root_de; |
413 | }; |
414 | |
415 | enum REPARSE_SIGN { |
416 | REPARSE_NONE = 0, |
417 | REPARSE_COMPRESSED = 1, |
418 | REPARSE_DEDUPLICATED = 2, |
419 | REPARSE_LINK = 3 |
420 | }; |
421 | |
422 | /* Functions from attrib.c */ |
423 | int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, |
424 | CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, |
425 | enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, |
426 | CLST *new_lcn, CLST *new_len); |
427 | int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, |
428 | struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, |
429 | u64 new_size, struct runs_tree *run, |
430 | struct ATTRIB **ins_attr, struct page *page); |
431 | int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, |
432 | const __le16 *name, u8 name_len, struct runs_tree *run, |
433 | u64 new_size, const u64 *new_valid, bool keep_prealloc, |
434 | struct ATTRIB **ret); |
435 | int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, |
436 | CLST *len, bool *new, bool zero); |
437 | int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); |
438 | int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); |
439 | int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, |
440 | const __le16 *name, u8 name_len, struct runs_tree *run, |
441 | CLST vcn); |
442 | int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, |
443 | const __le16 *name, u8 name_len, struct runs_tree *run, |
444 | u64 from, u64 to); |
445 | int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, |
446 | struct runs_tree *run, u64 frame, u64 frames, |
447 | u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); |
448 | int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, |
449 | CLST frame, CLST *clst_data); |
450 | int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, |
451 | u64 new_valid); |
452 | int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); |
453 | int attr_insert_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); |
454 | int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); |
455 | |
456 | /* Functions from attrlist.c */ |
457 | void al_destroy(struct ntfs_inode *ni); |
458 | bool al_verify(struct ntfs_inode *ni); |
459 | int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); |
460 | struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, |
461 | struct ATTR_LIST_ENTRY *le); |
462 | struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, |
463 | struct ATTR_LIST_ENTRY *le, |
464 | const struct ATTRIB *attr); |
465 | struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, |
466 | struct ATTR_LIST_ENTRY *le, |
467 | enum ATTR_TYPE type, const __le16 *name, |
468 | u8 name_len, const CLST *vcn); |
469 | int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, |
470 | u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, |
471 | struct ATTR_LIST_ENTRY **new_le); |
472 | bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); |
473 | bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, |
474 | const __le16 *name, u8 name_len, const struct MFT_REF *ref); |
475 | int al_update(struct ntfs_inode *ni, int sync); |
476 | static inline size_t al_aligned(size_t size) |
477 | { |
478 | return size_add(addend1: size, addend2: 1023) & ~(size_t)1023; |
479 | } |
480 | |
481 | /* Globals from bitfunc.c */ |
482 | bool are_bits_clear(const void *map, size_t bit, size_t nbits); |
483 | bool are_bits_set(const void *map, size_t bit, size_t nbits); |
484 | size_t get_set_bits_ex(const void *map, size_t bit, size_t nbits); |
485 | |
486 | /* Globals from dir.c */ |
487 | int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, |
488 | u8 *buf, int buf_len); |
489 | int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, |
490 | struct cpu_str *uni, u32 max_ulen, |
491 | enum utf16_endian endian); |
492 | struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, |
493 | struct ntfs_fnd *fnd); |
494 | bool dir_is_empty(struct inode *dir); |
495 | extern const struct file_operations ntfs_dir_operations; |
496 | |
497 | /* Globals from file.c */ |
498 | int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, |
499 | struct kstat *stat, u32 request_mask, u32 flags); |
500 | int ntfs3_setattr(struct mnt_idmap *idmap, struct dentry *dentry, |
501 | struct iattr *attr); |
502 | int ntfs_file_open(struct inode *inode, struct file *file); |
503 | int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
504 | __u64 start, __u64 len); |
505 | long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg); |
506 | long ntfs_compat_ioctl(struct file *filp, u32 cmd, unsigned long arg); |
507 | extern const struct inode_operations ntfs_special_inode_operations; |
508 | extern const struct inode_operations ntfs_file_inode_operations; |
509 | extern const struct file_operations ntfs_file_operations; |
510 | |
511 | /* Globals from frecord.c */ |
512 | void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); |
513 | struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); |
514 | struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); |
515 | void ni_clear(struct ntfs_inode *ni); |
516 | int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); |
517 | int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, |
518 | struct mft_inode **mi); |
519 | struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, |
520 | struct ATTR_LIST_ENTRY **entry_o, |
521 | enum ATTR_TYPE type, const __le16 *name, |
522 | u8 name_len, const CLST *vcn, |
523 | struct mft_inode **mi); |
524 | struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, |
525 | struct ATTR_LIST_ENTRY **le, |
526 | struct mft_inode **mi); |
527 | struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, |
528 | const __le16 *name, u8 name_len, CLST vcn, |
529 | struct mft_inode **pmi); |
530 | int ni_load_all_mi(struct ntfs_inode *ni); |
531 | bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); |
532 | int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, |
533 | const __le16 *name, u8 name_len, bool base_only, |
534 | const __le16 *id); |
535 | int ni_create_attr_list(struct ntfs_inode *ni); |
536 | int ni_expand_list(struct ntfs_inode *ni); |
537 | int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, |
538 | const __le16 *name, u8 name_len, |
539 | const struct runs_tree *run, CLST svcn, CLST len, |
540 | __le16 flags, struct ATTRIB **new_attr, |
541 | struct mft_inode **mi, struct ATTR_LIST_ENTRY **le); |
542 | int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, |
543 | enum ATTR_TYPE type, const __le16 *name, u8 name_len, |
544 | struct ATTRIB **new_attr, struct mft_inode **mi, |
545 | struct ATTR_LIST_ENTRY **le); |
546 | void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, |
547 | struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); |
548 | int ni_delete_all(struct ntfs_inode *ni); |
549 | struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, |
550 | const struct le_str *uni, |
551 | const struct MFT_REF *home, |
552 | struct mft_inode **mi, |
553 | struct ATTR_LIST_ENTRY **entry); |
554 | struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, |
555 | struct mft_inode **mi, |
556 | struct ATTR_LIST_ENTRY **entry); |
557 | int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); |
558 | enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, |
559 | struct REPARSE_DATA_BUFFER *buffer); |
560 | int ni_write_inode(struct inode *inode, int sync, const char *hint); |
561 | #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) |
562 | int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, |
563 | __u64 vbo, __u64 len); |
564 | int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); |
565 | int ni_decompress_file(struct ntfs_inode *ni); |
566 | int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, |
567 | u32 pages_per_frame); |
568 | int ni_write_frame(struct ntfs_inode *ni, struct page **pages, |
569 | u32 pages_per_frame); |
570 | int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, |
571 | struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); |
572 | |
573 | bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, |
574 | struct NTFS_DE *de, struct NTFS_DE *de2, |
575 | int undo_step); |
576 | |
577 | int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, |
578 | struct NTFS_DE *de); |
579 | |
580 | int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, |
581 | struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, |
582 | bool *is_bad); |
583 | |
584 | bool ni_is_dirty(struct inode *inode); |
585 | |
586 | /* Globals from fslog.c */ |
587 | bool (const struct INDEX_HDR *hdr, size_t bytes); |
588 | int log_replay(struct ntfs_inode *ni, bool *initialized); |
589 | |
590 | /* Globals from fsntfs.c */ |
591 | struct buffer_head *ntfs_bread(struct super_block *sb, sector_t block); |
592 | bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); |
593 | int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, |
594 | bool simple); |
595 | int ntfs_extend_init(struct ntfs_sb_info *sbi); |
596 | int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); |
597 | int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, |
598 | CLST *new_lcn, CLST *new_len, |
599 | enum ALLOCATE_OPT opt); |
600 | bool ntfs_check_for_free_space(struct ntfs_sb_info *sbi, CLST clen, CLST mlen); |
601 | int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, |
602 | struct ntfs_inode *ni, struct mft_inode **mi); |
603 | void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno, bool is_mft); |
604 | int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); |
605 | int ntfs_refresh_zone(struct ntfs_sb_info *sbi); |
606 | void ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); |
607 | void ntfs_bad_inode(struct inode *inode, const char *hint); |
608 | #define _ntfs_bad_inode(i) ntfs_bad_inode(i, __func__) |
609 | enum NTFS_DIRTY_FLAGS { |
610 | NTFS_DIRTY_CLEAR = 0, |
611 | NTFS_DIRTY_DIRTY = 1, |
612 | NTFS_DIRTY_ERROR = 2, |
613 | }; |
614 | int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); |
615 | int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); |
616 | int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, |
617 | const void *buffer, int wait); |
618 | int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
619 | u64 vbo, const void *buf, size_t bytes, int sync); |
620 | struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, |
621 | const struct runs_tree *run, u64 vbo); |
622 | int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
623 | u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); |
624 | int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, |
625 | struct NTFS_RECORD_HEADER *rhdr, u32 bytes, |
626 | struct ntfs_buffers *nb); |
627 | int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, |
628 | u32 bytes, struct ntfs_buffers *nb); |
629 | int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, |
630 | struct ntfs_buffers *nb, int sync); |
631 | int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
632 | struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, |
633 | enum req_op op); |
634 | int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); |
635 | int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
636 | u64 vbo, u64 *lbo, u64 *bytes); |
637 | struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, |
638 | enum RECORD_FLAG flag); |
639 | extern const u8 s_default_security[0x50]; |
640 | bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); |
641 | int ntfs_security_init(struct ntfs_sb_info *sbi); |
642 | int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, |
643 | struct SECURITY_DESCRIPTOR_RELATIVE **sd, |
644 | size_t *size); |
645 | int ntfs_insert_security(struct ntfs_sb_info *sbi, |
646 | const struct SECURITY_DESCRIPTOR_RELATIVE *sd, |
647 | u32 size, __le32 *security_id, bool *inserted); |
648 | int ntfs_reparse_init(struct ntfs_sb_info *sbi); |
649 | int ntfs_objid_init(struct ntfs_sb_info *sbi); |
650 | int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); |
651 | int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, |
652 | const struct MFT_REF *ref); |
653 | int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, |
654 | const struct MFT_REF *ref); |
655 | void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); |
656 | int run_deallocate(struct ntfs_sb_info *sbi, const struct runs_tree *run, |
657 | bool trim); |
658 | bool valid_windows_name(struct ntfs_sb_info *sbi, const struct le_str *name); |
659 | int ntfs_set_label(struct ntfs_sb_info *sbi, u8 *label, int len); |
660 | |
661 | /* Globals from index.c */ |
662 | int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); |
663 | void fnd_clear(struct ntfs_fnd *fnd); |
664 | static inline struct ntfs_fnd *fnd_get(void) |
665 | { |
666 | return kzalloc(size: sizeof(struct ntfs_fnd), GFP_NOFS); |
667 | } |
668 | static inline void fnd_put(struct ntfs_fnd *fnd) |
669 | { |
670 | if (fnd) { |
671 | fnd_clear(fnd); |
672 | kfree(objp: fnd); |
673 | } |
674 | } |
675 | void indx_clear(struct ntfs_index *idx); |
676 | int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, |
677 | const struct ATTRIB *attr, enum index_mutex_classed type); |
678 | struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, |
679 | struct ATTRIB **attr, struct mft_inode **mi); |
680 | int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, |
681 | struct indx_node **node); |
682 | int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, |
683 | const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, |
684 | const void *param, int *diff, struct NTFS_DE **entry, |
685 | struct ntfs_fnd *fnd); |
686 | int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, |
687 | const struct INDEX_ROOT *root, struct NTFS_DE **entry, |
688 | struct ntfs_fnd *fnd); |
689 | int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, |
690 | const struct INDEX_ROOT *root, struct NTFS_DE **entry, |
691 | size_t *off, struct ntfs_fnd *fnd); |
692 | int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, |
693 | const struct NTFS_DE *new_de, const void *param, |
694 | struct ntfs_fnd *fnd, bool undo); |
695 | int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, |
696 | const void *key, u32 key_len, const void *param); |
697 | int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, |
698 | const struct ATTR_FILE_NAME *fname, |
699 | const struct NTFS_DUP_INFO *dup, int sync); |
700 | |
701 | /* Globals from inode.c */ |
702 | struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, |
703 | const struct cpu_str *name); |
704 | int ntfs_set_size(struct inode *inode, u64 new_size); |
705 | int reset_log_file(struct inode *inode); |
706 | int ntfs_get_block(struct inode *inode, sector_t vbn, |
707 | struct buffer_head *bh_result, int create); |
708 | int ntfs_write_begin(struct file *file, struct address_space *mapping, |
709 | loff_t pos, u32 len, struct page **pagep, void **fsdata); |
710 | int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos, |
711 | u32 len, u32 copied, struct page *page, void *fsdata); |
712 | int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); |
713 | int ntfs_sync_inode(struct inode *inode); |
714 | int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, |
715 | struct inode *i2); |
716 | int inode_write_data(struct inode *inode, const void *data, size_t bytes); |
717 | struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir, |
718 | struct dentry *dentry, |
719 | const struct cpu_str *uni, umode_t mode, |
720 | dev_t dev, const char *symname, u32 size, |
721 | struct ntfs_fnd *fnd); |
722 | int ntfs_link_inode(struct inode *inode, struct dentry *dentry); |
723 | int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); |
724 | void ntfs_evict_inode(struct inode *inode); |
725 | extern const struct inode_operations ntfs_link_inode_operations; |
726 | extern const struct address_space_operations ntfs_aops; |
727 | extern const struct address_space_operations ntfs_aops_cmpr; |
728 | |
729 | /* Globals from name_i.c */ |
730 | int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, |
731 | const struct cpu_str *uni); |
732 | struct dentry *ntfs3_get_parent(struct dentry *child); |
733 | |
734 | extern const struct inode_operations ntfs_dir_inode_operations; |
735 | extern const struct inode_operations ntfs_special_inode_operations; |
736 | extern const struct dentry_operations ntfs_dentry_ops; |
737 | |
738 | /* Globals from record.c */ |
739 | int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); |
740 | void mi_put(struct mft_inode *mi); |
741 | int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); |
742 | int mi_read(struct mft_inode *mi, bool is_mft); |
743 | struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); |
744 | // TODO: id? |
745 | struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, |
746 | enum ATTR_TYPE type, const __le16 *name, |
747 | u8 name_len, const __le16 *id); |
748 | static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, |
749 | struct ATTR_LIST_ENTRY *le) |
750 | { |
751 | return mi_find_attr(mi: rec, NULL, type: le->type, name: le_name(le), name_len: le->name_len, |
752 | id: &le->id); |
753 | } |
754 | int mi_write(struct mft_inode *mi, int wait); |
755 | int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, |
756 | __le16 flags, bool is_mft); |
757 | struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, |
758 | const __le16 *name, u8 name_len, u32 asize, |
759 | u16 name_off); |
760 | |
761 | bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, |
762 | struct ATTRIB *attr); |
763 | bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); |
764 | int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, |
765 | struct runs_tree *run, CLST len); |
766 | static inline bool mi_is_ref(const struct mft_inode *mi, |
767 | const struct MFT_REF *ref) |
768 | { |
769 | if (le32_to_cpu(ref->low) != mi->rno) |
770 | return false; |
771 | if (ref->seq != mi->mrec->seq) |
772 | return false; |
773 | |
774 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER |
775 | return le16_to_cpu(ref->high) == (mi->rno >> 32); |
776 | #else |
777 | return !ref->high; |
778 | #endif |
779 | } |
780 | |
781 | static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) |
782 | { |
783 | ref->low = cpu_to_le32(mi->rno); |
784 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER |
785 | ref->high = cpu_to_le16(mi->rno >> 32); |
786 | #else |
787 | ref->high = 0; |
788 | #endif |
789 | ref->seq = mi->mrec->seq; |
790 | } |
791 | |
792 | /* Globals from run.c */ |
793 | bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, |
794 | CLST *len, size_t *index); |
795 | void run_truncate(struct runs_tree *run, CLST vcn); |
796 | void run_truncate_head(struct runs_tree *run, CLST vcn); |
797 | void run_truncate_around(struct runs_tree *run, CLST vcn); |
798 | bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, |
799 | bool is_mft); |
800 | bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); |
801 | bool run_insert_range(struct runs_tree *run, CLST vcn, CLST len); |
802 | bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, |
803 | CLST *lcn, CLST *len); |
804 | bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); |
805 | |
806 | int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, |
807 | u32 run_buf_size, CLST *packed_vcns); |
808 | int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, |
809 | CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, |
810 | int run_buf_size); |
811 | |
812 | #ifdef NTFS3_CHECK_FREE_CLST |
813 | int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, |
814 | CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, |
815 | int run_buf_size); |
816 | #else |
817 | #define run_unpack_ex run_unpack |
818 | #endif |
819 | int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); |
820 | int run_clone(const struct runs_tree *run, struct runs_tree *new_run); |
821 | |
822 | /* Globals from super.c */ |
823 | void *ntfs_set_shared(void *ptr, u32 bytes); |
824 | void *ntfs_put_shared(void *ptr); |
825 | void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); |
826 | int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); |
827 | |
828 | /* Globals from bitmap.c*/ |
829 | int __init ntfs3_init_bitmap(void); |
830 | void ntfs3_exit_bitmap(void); |
831 | void wnd_close(struct wnd_bitmap *wnd); |
832 | static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) |
833 | { |
834 | return wnd->total_zeroes; |
835 | } |
836 | int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); |
837 | int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
838 | int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
839 | int wnd_set_used_safe(struct wnd_bitmap *wnd, size_t bit, size_t bits, |
840 | size_t *done); |
841 | bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
842 | bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); |
843 | |
844 | /* Possible values for 'flags' 'wnd_find'. */ |
845 | #define BITMAP_FIND_MARK_AS_USED 0x01 |
846 | #define BITMAP_FIND_FULL 0x02 |
847 | size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, |
848 | size_t flags, size_t *allocated); |
849 | int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); |
850 | void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); |
851 | int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); |
852 | |
853 | void ntfs_bitmap_set_le(void *map, unsigned int start, int len); |
854 | void ntfs_bitmap_clear_le(void *map, unsigned int start, int len); |
855 | unsigned int ntfs_bitmap_weight_le(const void *bitmap, int bits); |
856 | |
857 | /* Globals from upcase.c */ |
858 | int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, |
859 | const u16 *upcase, bool bothcase); |
860 | int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, |
861 | const u16 *upcase, bool bothcase); |
862 | unsigned long ntfs_names_hash(const u16 *name, size_t len, const u16 *upcase, |
863 | unsigned long hash); |
864 | |
865 | /* globals from xattr.c */ |
866 | #ifdef CONFIG_NTFS3_FS_POSIX_ACL |
867 | struct posix_acl *ntfs_get_acl(struct mnt_idmap *idmap, struct dentry *dentry, |
868 | int type); |
869 | int ntfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, |
870 | struct posix_acl *acl, int type); |
871 | int ntfs_init_acl(struct mnt_idmap *idmap, struct inode *inode, |
872 | struct inode *dir); |
873 | #else |
874 | #define ntfs_get_acl NULL |
875 | #define ntfs_set_acl NULL |
876 | #endif |
877 | |
878 | int ntfs_acl_chmod(struct mnt_idmap *idmap, struct dentry *dentry); |
879 | ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
880 | extern const struct xattr_handler *const ntfs_xattr_handlers[]; |
881 | |
882 | int ntfs_save_wsl_perm(struct inode *inode, __le16 *ea_size); |
883 | void ntfs_get_wsl_perm(struct inode *inode); |
884 | |
885 | /* globals from lznt.c */ |
886 | struct lznt *get_lznt_ctx(int level); |
887 | size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, |
888 | void *compressed, size_t compressed_size, |
889 | struct lznt *ctx); |
890 | ssize_t decompress_lznt(const void *compressed, size_t compressed_size, |
891 | void *uncompressed, size_t uncompressed_size); |
892 | |
893 | static inline bool is_ntfs3(struct ntfs_sb_info *sbi) |
894 | { |
895 | return sbi->volume.major_ver >= 3; |
896 | } |
897 | |
898 | /* (sb->s_flags & SB_ACTIVE) */ |
899 | static inline bool is_mounted(struct ntfs_sb_info *sbi) |
900 | { |
901 | return !!sbi->sb->s_root; |
902 | } |
903 | |
904 | static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) |
905 | { |
906 | return rno < MFT_REC_FREE || rno == sbi->objid_no || |
907 | rno == sbi->quota_no || rno == sbi->reparse_no || |
908 | rno == sbi->usn_jrnl_no; |
909 | } |
910 | |
911 | static inline void ntfs_unmap_page(struct page *page) |
912 | { |
913 | kunmap(page); |
914 | put_page(page); |
915 | } |
916 | |
917 | static inline struct page *ntfs_map_page(struct address_space *mapping, |
918 | unsigned long index) |
919 | { |
920 | struct page *page = read_mapping_page(mapping, index, NULL); |
921 | |
922 | if (!IS_ERR(ptr: page)) |
923 | kmap(page); |
924 | return page; |
925 | } |
926 | |
927 | static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) |
928 | { |
929 | return wnd->zone_bit; |
930 | } |
931 | |
932 | static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) |
933 | { |
934 | return wnd->zone_end - wnd->zone_bit; |
935 | } |
936 | |
937 | static inline void run_init(struct runs_tree *run) |
938 | { |
939 | run->runs = NULL; |
940 | run->count = 0; |
941 | run->allocated = 0; |
942 | } |
943 | |
944 | static inline struct runs_tree *run_alloc(void) |
945 | { |
946 | return kzalloc(size: sizeof(struct runs_tree), GFP_NOFS); |
947 | } |
948 | |
949 | static inline void run_close(struct runs_tree *run) |
950 | { |
951 | kvfree(addr: run->runs); |
952 | memset(run, 0, sizeof(*run)); |
953 | } |
954 | |
955 | static inline void run_free(struct runs_tree *run) |
956 | { |
957 | if (run) { |
958 | kvfree(addr: run->runs); |
959 | kfree(objp: run); |
960 | } |
961 | } |
962 | |
963 | static inline bool run_is_empty(struct runs_tree *run) |
964 | { |
965 | return !run->count; |
966 | } |
967 | |
968 | /* NTFS uses quad aligned bitmaps. */ |
969 | static inline size_t bitmap_size(size_t bits) |
970 | { |
971 | return ALIGN((bits + 7) >> 3, 8); |
972 | } |
973 | |
974 | #define _100ns2seconds 10000000 |
975 | #define SecondsToStartOf1970 0x00000002B6109100 |
976 | |
977 | #define NTFS_TIME_GRAN 100 |
978 | |
979 | /* |
980 | * kernel2nt - Converts in-memory kernel timestamp into nt time. |
981 | */ |
982 | static inline __le64 kernel2nt(const struct timespec64 *ts) |
983 | { |
984 | // 10^7 units of 100 nanoseconds one second |
985 | return cpu_to_le64(_100ns2seconds * |
986 | (ts->tv_sec + SecondsToStartOf1970) + |
987 | ts->tv_nsec / NTFS_TIME_GRAN); |
988 | } |
989 | |
990 | /* |
991 | * nt2kernel - Converts on-disk nt time into kernel timestamp. |
992 | */ |
993 | static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) |
994 | { |
995 | u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; |
996 | |
997 | // WARNING: do_div changes its first argument(!) |
998 | ts->tv_nsec = do_div(t, _100ns2seconds) * 100; |
999 | ts->tv_sec = t; |
1000 | } |
1001 | |
1002 | static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) |
1003 | { |
1004 | return sb->s_fs_info; |
1005 | } |
1006 | |
1007 | static inline int ntfs3_forced_shutdown(struct super_block *sb) |
1008 | { |
1009 | return test_bit(NTFS_FLAGS_SHUTDOWN_BIT, &ntfs_sb(sb)->flags); |
1010 | } |
1011 | |
1012 | /* |
1013 | * ntfs_up_cluster - Align up on cluster boundary. |
1014 | */ |
1015 | static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) |
1016 | { |
1017 | return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; |
1018 | } |
1019 | |
1020 | /* |
1021 | * ntfs_up_block - Align up on cluster boundary. |
1022 | */ |
1023 | static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) |
1024 | { |
1025 | return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); |
1026 | } |
1027 | |
1028 | static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) |
1029 | { |
1030 | return (size + sbi->cluster_mask) >> sbi->cluster_bits; |
1031 | } |
1032 | |
1033 | static inline u64 bytes_to_block(const struct super_block *sb, u64 size) |
1034 | { |
1035 | return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; |
1036 | } |
1037 | |
1038 | static inline struct ntfs_inode *ntfs_i(struct inode *inode) |
1039 | { |
1040 | return container_of(inode, struct ntfs_inode, vfs_inode); |
1041 | } |
1042 | |
1043 | static inline bool is_compressed(const struct ntfs_inode *ni) |
1044 | { |
1045 | return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || |
1046 | (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); |
1047 | } |
1048 | |
1049 | static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) |
1050 | { |
1051 | return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); |
1052 | } |
1053 | |
1054 | /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ |
1055 | static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) |
1056 | { |
1057 | ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; |
1058 | } |
1059 | |
1060 | static inline bool is_dedup(const struct ntfs_inode *ni) |
1061 | { |
1062 | return ni->ni_flags & NI_FLAG_DEDUPLICATED; |
1063 | } |
1064 | |
1065 | static inline bool is_encrypted(const struct ntfs_inode *ni) |
1066 | { |
1067 | return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; |
1068 | } |
1069 | |
1070 | static inline bool is_sparsed(const struct ntfs_inode *ni) |
1071 | { |
1072 | return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; |
1073 | } |
1074 | |
1075 | static inline int is_resident(struct ntfs_inode *ni) |
1076 | { |
1077 | return ni->ni_flags & NI_FLAG_RESIDENT; |
1078 | } |
1079 | |
1080 | static inline void le16_sub_cpu(__le16 *var, u16 val) |
1081 | { |
1082 | *var = cpu_to_le16(le16_to_cpu(*var) - val); |
1083 | } |
1084 | |
1085 | static inline void le32_sub_cpu(__le32 *var, u32 val) |
1086 | { |
1087 | *var = cpu_to_le32(le32_to_cpu(*var) - val); |
1088 | } |
1089 | |
1090 | static inline void nb_put(struct ntfs_buffers *nb) |
1091 | { |
1092 | u32 i, nbufs = nb->nbufs; |
1093 | |
1094 | if (!nbufs) |
1095 | return; |
1096 | |
1097 | for (i = 0; i < nbufs; i++) |
1098 | put_bh(bh: nb->bh[i]); |
1099 | nb->nbufs = 0; |
1100 | } |
1101 | |
1102 | static inline void put_indx_node(struct indx_node *in) |
1103 | { |
1104 | if (!in) |
1105 | return; |
1106 | |
1107 | kfree(objp: in->index); |
1108 | nb_put(nb: &in->nb); |
1109 | kfree(objp: in); |
1110 | } |
1111 | |
1112 | static inline void mi_clear(struct mft_inode *mi) |
1113 | { |
1114 | nb_put(nb: &mi->nb); |
1115 | kfree(objp: mi->mrec); |
1116 | mi->mrec = NULL; |
1117 | } |
1118 | |
1119 | static inline void ni_lock(struct ntfs_inode *ni) |
1120 | { |
1121 | mutex_lock_nested(lock: &ni->ni_lock, subclass: NTFS_INODE_MUTEX_NORMAL); |
1122 | } |
1123 | |
1124 | static inline void ni_lock_dir(struct ntfs_inode *ni) |
1125 | { |
1126 | mutex_lock_nested(lock: &ni->ni_lock, subclass: NTFS_INODE_MUTEX_PARENT); |
1127 | } |
1128 | |
1129 | static inline void ni_lock_dir2(struct ntfs_inode *ni) |
1130 | { |
1131 | mutex_lock_nested(lock: &ni->ni_lock, subclass: NTFS_INODE_MUTEX_PARENT2); |
1132 | } |
1133 | |
1134 | static inline void ni_unlock(struct ntfs_inode *ni) |
1135 | { |
1136 | mutex_unlock(lock: &ni->ni_lock); |
1137 | } |
1138 | |
1139 | static inline int ni_trylock(struct ntfs_inode *ni) |
1140 | { |
1141 | return mutex_trylock(lock: &ni->ni_lock); |
1142 | } |
1143 | |
1144 | static inline int attr_load_runs_attr(struct ntfs_inode *ni, |
1145 | struct ATTRIB *attr, |
1146 | struct runs_tree *run, CLST vcn) |
1147 | { |
1148 | return attr_load_runs_vcn(ni, type: attr->type, name: attr_name(attr), |
1149 | name_len: attr->name_len, run, vcn); |
1150 | } |
1151 | |
1152 | static inline void le64_sub_cpu(__le64 *var, u64 val) |
1153 | { |
1154 | *var = cpu_to_le64(le64_to_cpu(*var) - val); |
1155 | } |
1156 | |
1157 | #endif /* _LINUX_NTFS3_NTFS_FS_H */ |
1158 | |