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4534a70b KK |
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 | ||
f239b3a9 KA |
12 | #include <linux/blkdev.h> |
13 | #include <linux/buffer_head.h> | |
f239b3a9 KA |
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 | ||
4534a70b KK |
42 | #define MINUS_ONE_T ((size_t)(-1)) |
43 | /* Biggest MFT / smallest cluster */ | |
44 | #define MAXIMUM_BYTES_PER_MFT 4096 | |
45 | #define NTFS_BLOCKS_PER_MFT_RECORD (MAXIMUM_BYTES_PER_MFT / 512) | |
46 | ||
47 | #define MAXIMUM_BYTES_PER_INDEX 4096 | |
48 | #define NTFS_BLOCKS_PER_INODE (MAXIMUM_BYTES_PER_INDEX / 512) | |
49 | ||
e8b8e97f | 50 | /* NTFS specific error code when fixup failed. */ |
4534a70b | 51 | #define E_NTFS_FIXUP 555 |
e8b8e97f | 52 | /* NTFS specific error code about resident->nonresident. */ |
4534a70b | 53 | #define E_NTFS_NONRESIDENT 556 |
e8b8e97f | 54 | /* NTFS specific error code about punch hole. */ |
4534a70b KK |
55 | #define E_NTFS_NOTALIGNED 557 |
56 | ||
57 | ||
58 | /* sbi->flags */ | |
59 | #define NTFS_FLAGS_NODISCARD 0x00000001 | |
e8b8e97f | 60 | /* Set when LogFile is replaying. */ |
4534a70b | 61 | #define NTFS_FLAGS_LOG_REPLAYING 0x00000008 |
e8b8e97f | 62 | /* Set when we changed first MFT's which copy must be updated in $MftMirr. */ |
4534a70b KK |
63 | #define NTFS_FLAGS_MFTMIRR 0x00001000 |
64 | #define NTFS_FLAGS_NEED_REPLAY 0x04000000 | |
65 | ||
66 | ||
67 | /* ni->ni_flags */ | |
68 | /* | |
e8b8e97f | 69 | * Data attribute is external compressed (LZX/Xpress) |
4534a70b KK |
70 | * 1 - WOF_COMPRESSION_XPRESS4K |
71 | * 2 - WOF_COMPRESSION_XPRESS8K | |
72 | * 3 - WOF_COMPRESSION_XPRESS16K | |
73 | * 4 - WOF_COMPRESSION_LZX32K | |
74 | */ | |
75 | #define NI_FLAG_COMPRESSED_MASK 0x0000000f | |
e8b8e97f | 76 | /* Data attribute is deduplicated. */ |
4534a70b KK |
77 | #define NI_FLAG_DEDUPLICATED 0x00000010 |
78 | #define NI_FLAG_EA 0x00000020 | |
79 | #define NI_FLAG_DIR 0x00000040 | |
80 | #define NI_FLAG_RESIDENT 0x00000080 | |
81 | #define NI_FLAG_UPDATE_PARENT 0x00000100 | |
82 | // clang-format on | |
83 | ||
84 | struct ntfs_mount_options { | |
610f8f5a | 85 | char *nls_name; |
4534a70b KK |
86 | struct nls_table *nls; |
87 | ||
88 | kuid_t fs_uid; | |
89 | kgid_t fs_gid; | |
90 | u16 fs_fmask_inv; | |
91 | u16 fs_dmask_inv; | |
92 | ||
15b2ae77 KA |
93 | unsigned fmask : 1; /* fmask was set. */ |
94 | unsigned dmask : 1; /*dmask was set. */ | |
95 | unsigned sys_immutable : 1; /* Immutable system files. */ | |
96 | unsigned discard : 1; /* Issue discard requests on deletions. */ | |
97 | unsigned sparse : 1; /* Create sparse files. */ | |
98 | unsigned showmeta : 1; /* Show meta files. */ | |
99 | unsigned nohidden : 1; /* Do not show hidden files. */ | |
100 | unsigned force : 1; /* RW mount dirty volume. */ | |
101 | unsigned noacsrules : 1; /* Exclude acs rules. */ | |
102 | unsigned prealloc : 1; /* Preallocate space when file is growing. */ | |
4534a70b KK |
103 | }; |
104 | ||
e8b8e97f | 105 | /* Special value to unpack and deallocate. */ |
4534a70b KK |
106 | #define RUN_DEALLOCATE ((struct runs_tree *)(size_t)1) |
107 | ||
e8b8e97f | 108 | /* TODO: Use rb tree instead of array. */ |
4534a70b KK |
109 | struct runs_tree { |
110 | struct ntfs_run *runs; | |
e8b8e97f KA |
111 | size_t count; /* Currently used size a ntfs_run storage. */ |
112 | size_t allocated; /* Currently allocated ntfs_run storage size. */ | |
4534a70b KK |
113 | }; |
114 | ||
115 | struct ntfs_buffers { | |
116 | /* Biggest MFT / smallest cluster = 4096 / 512 = 8 */ | |
117 | /* Biggest index / smallest cluster = 4096 / 512 = 8 */ | |
118 | struct buffer_head *bh[PAGE_SIZE >> SECTOR_SHIFT]; | |
119 | u32 bytes; | |
120 | u32 nbufs; | |
121 | u32 off; | |
122 | }; | |
123 | ||
124 | enum ALLOCATE_OPT { | |
e8b8e97f KA |
125 | ALLOCATE_DEF = 0, // Allocate all clusters. |
126 | ALLOCATE_MFT = 1, // Allocate for MFT. | |
4534a70b KK |
127 | }; |
128 | ||
129 | enum bitmap_mutex_classes { | |
130 | BITMAP_MUTEX_CLUSTERS = 0, | |
131 | BITMAP_MUTEX_MFT = 1, | |
132 | }; | |
133 | ||
134 | struct wnd_bitmap { | |
135 | struct super_block *sb; | |
136 | struct rw_semaphore rw_lock; | |
137 | ||
138 | struct runs_tree run; | |
139 | size_t nbits; | |
140 | ||
e8b8e97f KA |
141 | size_t total_zeroes; // Total number of free bits. |
142 | u16 *free_bits; // Free bits in each window. | |
4534a70b | 143 | size_t nwnd; |
e8b8e97f | 144 | u32 bits_last; // Bits in last window. |
4534a70b | 145 | |
e8b8e97f KA |
146 | struct rb_root start_tree; // Extents, sorted by 'start'. |
147 | struct rb_root count_tree; // Extents, sorted by 'count + start'. | |
148 | size_t count; // Extents count. | |
4534a70b KK |
149 | |
150 | /* | |
e8b8e97f KA |
151 | * -1 Tree is activated but not updated (too many fragments). |
152 | * 0 - Tree is not activated. | |
153 | * 1 - Tree is activated and updated. | |
4534a70b KK |
154 | */ |
155 | int uptodated; | |
e8b8e97f KA |
156 | size_t extent_min; // Minimal extent used while building. |
157 | size_t extent_max; // Upper estimate of biggest free block. | |
4534a70b KK |
158 | |
159 | /* Zone [bit, end) */ | |
160 | size_t zone_bit; | |
161 | size_t zone_end; | |
162 | ||
e8b8e97f | 163 | bool set_tail; // Not necessary in driver. |
4534a70b KK |
164 | bool inited; |
165 | }; | |
166 | ||
167 | typedef int (*NTFS_CMP_FUNC)(const void *key1, size_t len1, const void *key2, | |
168 | size_t len2, const void *param); | |
169 | ||
170 | enum index_mutex_classed { | |
171 | INDEX_MUTEX_I30 = 0, | |
172 | INDEX_MUTEX_SII = 1, | |
173 | INDEX_MUTEX_SDH = 2, | |
174 | INDEX_MUTEX_SO = 3, | |
175 | INDEX_MUTEX_SQ = 4, | |
176 | INDEX_MUTEX_SR = 5, | |
177 | INDEX_MUTEX_TOTAL | |
178 | }; | |
179 | ||
e8b8e97f | 180 | /* ntfs_index - Allocation unit inside directory. */ |
4534a70b KK |
181 | struct ntfs_index { |
182 | struct runs_tree bitmap_run; | |
183 | struct runs_tree alloc_run; | |
184 | /* read/write access to 'bitmap_run'/'alloc_run' while ntfs_readdir */ | |
185 | struct rw_semaphore run_lock; | |
186 | ||
e8b8e97f | 187 | /*TODO: Remove 'cmp'. */ |
4534a70b KK |
188 | NTFS_CMP_FUNC cmp; |
189 | ||
190 | u8 index_bits; // log2(root->index_block_size) | |
191 | u8 idx2vbn_bits; // log2(root->index_block_clst) | |
192 | u8 vbn2vbo_bits; // index_block_size < cluster? 9 : cluster_bits | |
193 | u8 type; // index_mutex_classed | |
194 | }; | |
195 | ||
e8b8e97f | 196 | /* Minimum MFT zone. */ |
4534a70b KK |
197 | #define NTFS_MIN_MFT_ZONE 100 |
198 | ||
e8b8e97f | 199 | /* Ntfs file system in-core superblock data. */ |
4534a70b KK |
200 | struct ntfs_sb_info { |
201 | struct super_block *sb; | |
202 | ||
203 | u32 discard_granularity; | |
204 | u64 discard_granularity_mask_inv; // ~(discard_granularity_mask_inv-1) | |
205 | ||
206 | u32 cluster_size; // bytes per cluster | |
207 | u32 cluster_mask; // == cluster_size - 1 | |
208 | u64 cluster_mask_inv; // ~(cluster_size - 1) | |
209 | u32 block_mask; // sb->s_blocksize - 1 | |
210 | u32 blocks_per_cluster; // cluster_size / sb->s_blocksize | |
211 | ||
212 | u32 record_size; | |
4534a70b KK |
213 | u32 index_size; |
214 | ||
4534a70b KK |
215 | u8 cluster_bits; |
216 | u8 record_bits; | |
217 | ||
e8b8e97f KA |
218 | u64 maxbytes; // Maximum size for normal files. |
219 | u64 maxbytes_sparse; // Maximum size for sparse file. | |
4534a70b | 220 | |
e8b8e97f | 221 | u32 flags; // See NTFS_FLAGS_XXX. |
4534a70b | 222 | |
e8b8e97f | 223 | CLST bad_clusters; // The count of marked bad clusters. |
4534a70b | 224 | |
e8b8e97f KA |
225 | u16 max_bytes_per_attr; // Maximum attribute size in record. |
226 | u16 attr_size_tr; // Attribute size threshold (320 bytes). | |
4534a70b | 227 | |
e8b8e97f | 228 | /* Records in $Extend. */ |
4534a70b KK |
229 | CLST objid_no; |
230 | CLST quota_no; | |
231 | CLST reparse_no; | |
232 | CLST usn_jrnl_no; | |
233 | ||
e8b8e97f | 234 | struct ATTR_DEF_ENTRY *def_table; // Attribute definition table. |
4534a70b KK |
235 | u32 def_entries; |
236 | u32 ea_max_size; | |
237 | ||
238 | struct MFT_REC *new_rec; | |
239 | ||
240 | u16 *upcase; | |
241 | ||
242 | struct { | |
243 | u64 lbo, lbo2; | |
244 | struct ntfs_inode *ni; | |
245 | struct wnd_bitmap bitmap; // $MFT::Bitmap | |
246 | /* | |
e8b8e97f | 247 | * MFT records [11-24) used to expand MFT itself. |
4534a70b | 248 | * They always marked as used in $MFT::Bitmap |
e8b8e97f | 249 | * 'reserved_bitmap' contains real bitmap of these records. |
4534a70b | 250 | */ |
e8b8e97f | 251 | ulong reserved_bitmap; // Bitmap of used records [11 - 24) |
4534a70b | 252 | size_t next_free; // The next record to allocate from |
e8b8e97f | 253 | size_t used; // MFT valid size in records. |
4534a70b KK |
254 | u32 recs_mirr; // Number of records in MFTMirr |
255 | u8 next_reserved; | |
256 | u8 reserved_bitmap_inited; | |
257 | } mft; | |
258 | ||
259 | struct { | |
260 | struct wnd_bitmap bitmap; // $Bitmap::Data | |
261 | CLST next_free_lcn; | |
262 | } used; | |
263 | ||
264 | struct { | |
e8b8e97f KA |
265 | u64 size; // In bytes. |
266 | u64 blocks; // In blocks. | |
4534a70b KK |
267 | u64 ser_num; |
268 | struct ntfs_inode *ni; | |
e8b8e97f | 269 | __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. |
4534a70b KK |
270 | u8 major_ver; |
271 | u8 minor_ver; | |
272 | char label[65]; | |
e8b8e97f | 273 | bool real_dirty; // Real fs state. |
4534a70b KK |
274 | } volume; |
275 | ||
276 | struct { | |
277 | struct ntfs_index index_sii; | |
278 | struct ntfs_index index_sdh; | |
279 | struct ntfs_inode *ni; | |
280 | u32 next_id; | |
281 | u64 next_off; | |
282 | ||
283 | __le32 def_security_id; | |
284 | } security; | |
285 | ||
286 | struct { | |
287 | struct ntfs_index index_r; | |
288 | struct ntfs_inode *ni; | |
289 | u64 max_size; // 16K | |
290 | } reparse; | |
291 | ||
292 | struct { | |
293 | struct ntfs_index index_o; | |
294 | struct ntfs_inode *ni; | |
295 | } objid; | |
296 | ||
297 | struct { | |
298 | struct mutex mtx_lznt; | |
299 | struct lznt *lznt; | |
300 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
301 | struct mutex mtx_xpress; | |
302 | struct xpress_decompressor *xpress; | |
303 | struct mutex mtx_lzx; | |
304 | struct lzx_decompressor *lzx; | |
305 | #endif | |
306 | } compress; | |
307 | ||
564c97bd | 308 | struct ntfs_mount_options *options; |
4534a70b KK |
309 | struct ratelimit_state msg_ratelimit; |
310 | }; | |
311 | ||
e8b8e97f | 312 | /* One MFT record(usually 1024 bytes), consists of attributes. */ |
4534a70b KK |
313 | struct mft_inode { |
314 | struct rb_node node; | |
315 | struct ntfs_sb_info *sbi; | |
316 | ||
317 | struct MFT_REC *mrec; | |
318 | struct ntfs_buffers nb; | |
319 | ||
320 | CLST rno; | |
321 | bool dirty; | |
322 | }; | |
323 | ||
e8b8e97f | 324 | /* Nested class for ntfs_inode::ni_lock. */ |
4534a70b KK |
325 | enum ntfs_inode_mutex_lock_class { |
326 | NTFS_INODE_MUTEX_DIRTY, | |
327 | NTFS_INODE_MUTEX_SECURITY, | |
328 | NTFS_INODE_MUTEX_OBJID, | |
329 | NTFS_INODE_MUTEX_REPARSE, | |
330 | NTFS_INODE_MUTEX_NORMAL, | |
331 | NTFS_INODE_MUTEX_PARENT, | |
332 | }; | |
333 | ||
334 | /* | |
e8b8e97f KA |
335 | * sturct ntfs_inode |
336 | * | |
337 | * Ntfs inode - extends linux inode. consists of one or more MFT inodes. | |
4534a70b KK |
338 | */ |
339 | struct ntfs_inode { | |
340 | struct mft_inode mi; // base record | |
341 | ||
342 | /* | |
e8b8e97f KA |
343 | * Valid size: [0 - i_valid) - these range in file contains valid data. |
344 | * Range [i_valid - inode->i_size) - contains 0. | |
345 | * Usually i_valid <= inode->i_size. | |
4534a70b KK |
346 | */ |
347 | u64 i_valid; | |
348 | struct timespec64 i_crtime; | |
349 | ||
350 | struct mutex ni_lock; | |
351 | ||
e8b8e97f | 352 | /* File attributes from std. */ |
4534a70b KK |
353 | enum FILE_ATTRIBUTE std_fa; |
354 | __le32 std_security_id; | |
355 | ||
356 | /* | |
e8b8e97f KA |
357 | * Tree of mft_inode. |
358 | * Not empty when primary MFT record (usually 1024 bytes) can't save all attributes | |
359 | * e.g. file becomes too fragmented or contains a lot of names. | |
4534a70b KK |
360 | */ |
361 | struct rb_root mi_tree; | |
362 | ||
363 | /* | |
364 | * This member is used in ntfs_readdir to ensure that all subrecords are loaded | |
365 | */ | |
366 | u8 mi_loaded; | |
367 | ||
368 | union { | |
369 | struct ntfs_index dir; | |
370 | struct { | |
371 | struct rw_semaphore run_lock; | |
372 | struct runs_tree run; | |
373 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
374 | struct page *offs_page; | |
375 | #endif | |
376 | } file; | |
377 | }; | |
378 | ||
379 | struct { | |
380 | struct runs_tree run; | |
e8b8e97f | 381 | struct ATTR_LIST_ENTRY *le; // 1K aligned memory. |
4534a70b KK |
382 | size_t size; |
383 | bool dirty; | |
384 | } attr_list; | |
385 | ||
386 | size_t ni_flags; // NI_FLAG_XXX | |
387 | ||
388 | struct inode vfs_inode; | |
389 | }; | |
390 | ||
391 | struct indx_node { | |
392 | struct ntfs_buffers nb; | |
393 | struct INDEX_BUFFER *index; | |
394 | }; | |
395 | ||
396 | struct ntfs_fnd { | |
397 | int level; | |
398 | struct indx_node *nodes[20]; | |
399 | struct NTFS_DE *de[20]; | |
400 | struct NTFS_DE *root_de; | |
401 | }; | |
402 | ||
403 | enum REPARSE_SIGN { | |
404 | REPARSE_NONE = 0, | |
405 | REPARSE_COMPRESSED = 1, | |
406 | REPARSE_DEDUPLICATED = 2, | |
407 | REPARSE_LINK = 3 | |
408 | }; | |
409 | ||
e8b8e97f | 410 | /* Functions from attrib.c */ |
4534a70b KK |
411 | int attr_load_runs(struct ATTRIB *attr, struct ntfs_inode *ni, |
412 | struct runs_tree *run, const CLST *vcn); | |
413 | int attr_allocate_clusters(struct ntfs_sb_info *sbi, struct runs_tree *run, | |
414 | CLST vcn, CLST lcn, CLST len, CLST *pre_alloc, | |
415 | enum ALLOCATE_OPT opt, CLST *alen, const size_t fr, | |
416 | CLST *new_lcn); | |
417 | int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr, | |
418 | struct ATTR_LIST_ENTRY *le, struct mft_inode *mi, | |
419 | u64 new_size, struct runs_tree *run, | |
420 | struct ATTRIB **ins_attr, struct page *page); | |
421 | int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
422 | const __le16 *name, u8 name_len, struct runs_tree *run, | |
423 | u64 new_size, const u64 *new_valid, bool keep_prealloc, | |
424 | struct ATTRIB **ret); | |
425 | int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, | |
426 | CLST *len, bool *new); | |
427 | int attr_data_read_resident(struct ntfs_inode *ni, struct page *page); | |
428 | int attr_data_write_resident(struct ntfs_inode *ni, struct page *page); | |
429 | int attr_load_runs_vcn(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
430 | const __le16 *name, u8 name_len, struct runs_tree *run, | |
431 | CLST vcn); | |
432 | int attr_load_runs_range(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
433 | const __le16 *name, u8 name_len, struct runs_tree *run, | |
434 | u64 from, u64 to); | |
435 | int attr_wof_frame_info(struct ntfs_inode *ni, struct ATTRIB *attr, | |
436 | struct runs_tree *run, u64 frame, u64 frames, | |
437 | u8 frame_bits, u32 *ondisk_size, u64 *vbo_data); | |
438 | int attr_is_frame_compressed(struct ntfs_inode *ni, struct ATTRIB *attr, | |
439 | CLST frame, CLST *clst_data); | |
440 | int attr_allocate_frame(struct ntfs_inode *ni, CLST frame, size_t compr_size, | |
441 | u64 new_valid); | |
442 | int attr_collapse_range(struct ntfs_inode *ni, u64 vbo, u64 bytes); | |
443 | int attr_punch_hole(struct ntfs_inode *ni, u64 vbo, u64 bytes, u32 *frame_size); | |
444 | ||
e8b8e97f | 445 | /* Functions from attrlist.c */ |
4534a70b KK |
446 | void al_destroy(struct ntfs_inode *ni); |
447 | bool al_verify(struct ntfs_inode *ni); | |
448 | int ntfs_load_attr_list(struct ntfs_inode *ni, struct ATTRIB *attr); | |
449 | struct ATTR_LIST_ENTRY *al_enumerate(struct ntfs_inode *ni, | |
450 | struct ATTR_LIST_ENTRY *le); | |
451 | struct ATTR_LIST_ENTRY *al_find_le(struct ntfs_inode *ni, | |
452 | struct ATTR_LIST_ENTRY *le, | |
453 | const struct ATTRIB *attr); | |
454 | struct ATTR_LIST_ENTRY *al_find_ex(struct ntfs_inode *ni, | |
455 | struct ATTR_LIST_ENTRY *le, | |
456 | enum ATTR_TYPE type, const __le16 *name, | |
457 | u8 name_len, const CLST *vcn); | |
458 | int al_add_le(struct ntfs_inode *ni, enum ATTR_TYPE type, const __le16 *name, | |
459 | u8 name_len, CLST svcn, __le16 id, const struct MFT_REF *ref, | |
460 | struct ATTR_LIST_ENTRY **new_le); | |
461 | bool al_remove_le(struct ntfs_inode *ni, struct ATTR_LIST_ENTRY *le); | |
462 | bool al_delete_le(struct ntfs_inode *ni, enum ATTR_TYPE type, CLST vcn, | |
463 | const __le16 *name, size_t name_len, | |
464 | const struct MFT_REF *ref); | |
63544672 | 465 | int al_update(struct ntfs_inode *ni, int sync); |
4534a70b KK |
466 | static inline size_t al_aligned(size_t size) |
467 | { | |
468 | return (size + 1023) & ~(size_t)1023; | |
469 | } | |
470 | ||
e8b8e97f | 471 | /* Globals from bitfunc.c */ |
4534a70b KK |
472 | bool are_bits_clear(const ulong *map, size_t bit, size_t nbits); |
473 | bool are_bits_set(const ulong *map, size_t bit, size_t nbits); | |
474 | size_t get_set_bits_ex(const ulong *map, size_t bit, size_t nbits); | |
475 | ||
e8b8e97f | 476 | /* Globals from dir.c */ |
2c690788 | 477 | int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len, |
4534a70b KK |
478 | u8 *buf, int buf_len); |
479 | int ntfs_nls_to_utf16(struct ntfs_sb_info *sbi, const u8 *name, u32 name_len, | |
480 | struct cpu_str *uni, u32 max_ulen, | |
481 | enum utf16_endian endian); | |
482 | struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, | |
483 | struct ntfs_fnd *fnd); | |
484 | bool dir_is_empty(struct inode *dir); | |
485 | extern const struct file_operations ntfs_dir_operations; | |
486 | ||
e8b8e97f | 487 | /* Globals from file.c */ |
4534a70b KK |
488 | int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path, |
489 | struct kstat *stat, u32 request_mask, u32 flags); | |
490 | void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, | |
491 | CLST len); | |
492 | int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, | |
493 | struct iattr *attr); | |
494 | int ntfs_file_open(struct inode *inode, struct file *file); | |
495 | int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, | |
496 | __u64 start, __u64 len); | |
497 | extern const struct inode_operations ntfs_special_inode_operations; | |
498 | extern const struct inode_operations ntfs_file_inode_operations; | |
499 | extern const struct file_operations ntfs_file_operations; | |
500 | ||
e8b8e97f | 501 | /* Globals from frecord.c */ |
4534a70b KK |
502 | void ni_remove_mi(struct ntfs_inode *ni, struct mft_inode *mi); |
503 | struct ATTR_STD_INFO *ni_std(struct ntfs_inode *ni); | |
504 | struct ATTR_STD_INFO5 *ni_std5(struct ntfs_inode *ni); | |
505 | void ni_clear(struct ntfs_inode *ni); | |
506 | int ni_load_mi_ex(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); | |
78ab59fe | 507 | int ni_load_mi(struct ntfs_inode *ni, const struct ATTR_LIST_ENTRY *le, |
4534a70b KK |
508 | struct mft_inode **mi); |
509 | struct ATTRIB *ni_find_attr(struct ntfs_inode *ni, struct ATTRIB *attr, | |
510 | struct ATTR_LIST_ENTRY **entry_o, | |
511 | enum ATTR_TYPE type, const __le16 *name, | |
512 | u8 name_len, const CLST *vcn, | |
513 | struct mft_inode **mi); | |
514 | struct ATTRIB *ni_enum_attr_ex(struct ntfs_inode *ni, struct ATTRIB *attr, | |
515 | struct ATTR_LIST_ENTRY **le, | |
516 | struct mft_inode **mi); | |
517 | struct ATTRIB *ni_load_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
518 | const __le16 *name, u8 name_len, CLST vcn, | |
519 | struct mft_inode **pmi); | |
520 | int ni_load_all_mi(struct ntfs_inode *ni); | |
521 | bool ni_add_subrecord(struct ntfs_inode *ni, CLST rno, struct mft_inode **mi); | |
522 | int ni_remove_attr(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
523 | const __le16 *name, size_t name_len, bool base_only, | |
524 | const __le16 *id); | |
525 | int ni_create_attr_list(struct ntfs_inode *ni); | |
526 | int ni_expand_list(struct ntfs_inode *ni); | |
527 | int ni_insert_nonresident(struct ntfs_inode *ni, enum ATTR_TYPE type, | |
528 | const __le16 *name, u8 name_len, | |
529 | const struct runs_tree *run, CLST svcn, CLST len, | |
530 | __le16 flags, struct ATTRIB **new_attr, | |
531 | struct mft_inode **mi); | |
532 | int ni_insert_resident(struct ntfs_inode *ni, u32 data_size, | |
533 | enum ATTR_TYPE type, const __le16 *name, u8 name_len, | |
78ab59fe KK |
534 | struct ATTRIB **new_attr, struct mft_inode **mi, |
535 | struct ATTR_LIST_ENTRY **le); | |
536 | void ni_remove_attr_le(struct ntfs_inode *ni, struct ATTRIB *attr, | |
537 | struct mft_inode *mi, struct ATTR_LIST_ENTRY *le); | |
4534a70b KK |
538 | int ni_delete_all(struct ntfs_inode *ni); |
539 | struct ATTR_FILE_NAME *ni_fname_name(struct ntfs_inode *ni, | |
540 | const struct cpu_str *uni, | |
541 | const struct MFT_REF *home, | |
78ab59fe | 542 | struct mft_inode **mi, |
4534a70b KK |
543 | struct ATTR_LIST_ENTRY **entry); |
544 | struct ATTR_FILE_NAME *ni_fname_type(struct ntfs_inode *ni, u8 name_type, | |
78ab59fe | 545 | struct mft_inode **mi, |
4534a70b KK |
546 | struct ATTR_LIST_ENTRY **entry); |
547 | int ni_new_attr_flags(struct ntfs_inode *ni, enum FILE_ATTRIBUTE new_fa); | |
548 | enum REPARSE_SIGN ni_parse_reparse(struct ntfs_inode *ni, struct ATTRIB *attr, | |
cd4c76ff | 549 | struct REPARSE_DATA_BUFFER *buffer); |
4534a70b KK |
550 | int ni_write_inode(struct inode *inode, int sync, const char *hint); |
551 | #define _ni_write_inode(i, w) ni_write_inode(i, w, __func__) | |
552 | int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo, | |
553 | __u64 vbo, __u64 len); | |
554 | int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page); | |
555 | int ni_decompress_file(struct ntfs_inode *ni); | |
556 | int ni_read_frame(struct ntfs_inode *ni, u64 frame_vbo, struct page **pages, | |
557 | u32 pages_per_frame); | |
558 | int ni_write_frame(struct ntfs_inode *ni, struct page **pages, | |
559 | u32 pages_per_frame); | |
78ab59fe KK |
560 | int ni_remove_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, |
561 | struct NTFS_DE *de, struct NTFS_DE **de2, int *undo_step); | |
562 | ||
563 | bool ni_remove_name_undo(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, | |
564 | struct NTFS_DE *de, struct NTFS_DE *de2, | |
565 | int undo_step); | |
566 | ||
567 | int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni, | |
568 | struct NTFS_DE *de); | |
569 | ||
570 | int ni_rename(struct ntfs_inode *dir_ni, struct ntfs_inode *new_dir_ni, | |
571 | struct ntfs_inode *ni, struct NTFS_DE *de, struct NTFS_DE *new_de, | |
572 | bool *is_bad); | |
573 | ||
574 | bool ni_is_dirty(struct inode *inode); | |
4534a70b | 575 | |
e8b8e97f | 576 | /* Globals from fslog.c */ |
4534a70b KK |
577 | int log_replay(struct ntfs_inode *ni, bool *initialized); |
578 | ||
e8b8e97f | 579 | /* Globals from fsntfs.c */ |
4534a70b KK |
580 | bool ntfs_fix_pre_write(struct NTFS_RECORD_HEADER *rhdr, size_t bytes); |
581 | int ntfs_fix_post_read(struct NTFS_RECORD_HEADER *rhdr, size_t bytes, | |
582 | bool simple); | |
583 | int ntfs_extend_init(struct ntfs_sb_info *sbi); | |
584 | int ntfs_loadlog_and_replay(struct ntfs_inode *ni, struct ntfs_sb_info *sbi); | |
585 | const struct ATTR_DEF_ENTRY *ntfs_query_def(struct ntfs_sb_info *sbi, | |
586 | enum ATTR_TYPE Type); | |
587 | int ntfs_look_for_free_space(struct ntfs_sb_info *sbi, CLST lcn, CLST len, | |
588 | CLST *new_lcn, CLST *new_len, | |
589 | enum ALLOCATE_OPT opt); | |
590 | int ntfs_look_free_mft(struct ntfs_sb_info *sbi, CLST *rno, bool mft, | |
591 | struct ntfs_inode *ni, struct mft_inode **mi); | |
592 | void ntfs_mark_rec_free(struct ntfs_sb_info *sbi, CLST rno); | |
593 | int ntfs_clear_mft_tail(struct ntfs_sb_info *sbi, size_t from, size_t to); | |
594 | int ntfs_refresh_zone(struct ntfs_sb_info *sbi); | |
595 | int ntfs_update_mftmirr(struct ntfs_sb_info *sbi, int wait); | |
596 | enum NTFS_DIRTY_FLAGS { | |
597 | NTFS_DIRTY_CLEAR = 0, | |
598 | NTFS_DIRTY_DIRTY = 1, | |
599 | NTFS_DIRTY_ERROR = 2, | |
600 | }; | |
601 | int ntfs_set_state(struct ntfs_sb_info *sbi, enum NTFS_DIRTY_FLAGS dirty); | |
602 | int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer); | |
603 | int ntfs_sb_write(struct super_block *sb, u64 lbo, size_t bytes, | |
604 | const void *buffer, int wait); | |
605 | int ntfs_sb_write_run(struct ntfs_sb_info *sbi, const struct runs_tree *run, | |
63544672 | 606 | u64 vbo, const void *buf, size_t bytes, int sync); |
4534a70b KK |
607 | struct buffer_head *ntfs_bread_run(struct ntfs_sb_info *sbi, |
608 | const struct runs_tree *run, u64 vbo); | |
609 | int ntfs_read_run_nb(struct ntfs_sb_info *sbi, const struct runs_tree *run, | |
610 | u64 vbo, void *buf, u32 bytes, struct ntfs_buffers *nb); | |
611 | int ntfs_read_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, | |
612 | struct NTFS_RECORD_HEADER *rhdr, u32 bytes, | |
613 | struct ntfs_buffers *nb); | |
614 | int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo, | |
615 | u32 bytes, struct ntfs_buffers *nb); | |
616 | int ntfs_write_bh(struct ntfs_sb_info *sbi, struct NTFS_RECORD_HEADER *rhdr, | |
617 | struct ntfs_buffers *nb, int sync); | |
618 | int ntfs_bio_pages(struct ntfs_sb_info *sbi, const struct runs_tree *run, | |
619 | struct page **pages, u32 nr_pages, u64 vbo, u32 bytes, | |
ce6b5315 | 620 | enum req_op op); |
4534a70b KK |
621 | int ntfs_bio_fill_1(struct ntfs_sb_info *sbi, const struct runs_tree *run); |
622 | int ntfs_vbo_to_lbo(struct ntfs_sb_info *sbi, const struct runs_tree *run, | |
623 | u64 vbo, u64 *lbo, u64 *bytes); | |
624 | struct ntfs_inode *ntfs_new_inode(struct ntfs_sb_info *sbi, CLST nRec, | |
625 | bool dir); | |
626 | extern const u8 s_default_security[0x50]; | |
627 | bool is_sd_valid(const struct SECURITY_DESCRIPTOR_RELATIVE *sd, u32 len); | |
628 | int ntfs_security_init(struct ntfs_sb_info *sbi); | |
629 | int ntfs_get_security_by_id(struct ntfs_sb_info *sbi, __le32 security_id, | |
630 | struct SECURITY_DESCRIPTOR_RELATIVE **sd, | |
631 | size_t *size); | |
632 | int ntfs_insert_security(struct ntfs_sb_info *sbi, | |
633 | const struct SECURITY_DESCRIPTOR_RELATIVE *sd, | |
634 | u32 size, __le32 *security_id, bool *inserted); | |
635 | int ntfs_reparse_init(struct ntfs_sb_info *sbi); | |
636 | int ntfs_objid_init(struct ntfs_sb_info *sbi); | |
637 | int ntfs_objid_remove(struct ntfs_sb_info *sbi, struct GUID *guid); | |
638 | int ntfs_insert_reparse(struct ntfs_sb_info *sbi, __le32 rtag, | |
639 | const struct MFT_REF *ref); | |
640 | int ntfs_remove_reparse(struct ntfs_sb_info *sbi, __le32 rtag, | |
641 | const struct MFT_REF *ref); | |
642 | void mark_as_free_ex(struct ntfs_sb_info *sbi, CLST lcn, CLST len, bool trim); | |
643 | int run_deallocate(struct ntfs_sb_info *sbi, struct runs_tree *run, bool trim); | |
644 | ||
e8b8e97f | 645 | /* Globals from index.c */ |
4534a70b KK |
646 | int indx_used_bit(struct ntfs_index *indx, struct ntfs_inode *ni, size_t *bit); |
647 | void fnd_clear(struct ntfs_fnd *fnd); | |
648 | static inline struct ntfs_fnd *fnd_get(void) | |
649 | { | |
195c52bd | 650 | return kzalloc(sizeof(struct ntfs_fnd), GFP_NOFS); |
4534a70b KK |
651 | } |
652 | static inline void fnd_put(struct ntfs_fnd *fnd) | |
653 | { | |
654 | if (fnd) { | |
655 | fnd_clear(fnd); | |
195c52bd | 656 | kfree(fnd); |
4534a70b KK |
657 | } |
658 | } | |
659 | void indx_clear(struct ntfs_index *idx); | |
660 | int indx_init(struct ntfs_index *indx, struct ntfs_sb_info *sbi, | |
661 | const struct ATTRIB *attr, enum index_mutex_classed type); | |
662 | struct INDEX_ROOT *indx_get_root(struct ntfs_index *indx, struct ntfs_inode *ni, | |
663 | struct ATTRIB **attr, struct mft_inode **mi); | |
664 | int indx_read(struct ntfs_index *idx, struct ntfs_inode *ni, CLST vbn, | |
665 | struct indx_node **node); | |
666 | int indx_find(struct ntfs_index *indx, struct ntfs_inode *dir, | |
667 | const struct INDEX_ROOT *root, const void *Key, size_t KeyLen, | |
668 | const void *param, int *diff, struct NTFS_DE **entry, | |
669 | struct ntfs_fnd *fnd); | |
670 | int indx_find_sort(struct ntfs_index *indx, struct ntfs_inode *ni, | |
671 | const struct INDEX_ROOT *root, struct NTFS_DE **entry, | |
672 | struct ntfs_fnd *fnd); | |
673 | int indx_find_raw(struct ntfs_index *indx, struct ntfs_inode *ni, | |
674 | const struct INDEX_ROOT *root, struct NTFS_DE **entry, | |
675 | size_t *off, struct ntfs_fnd *fnd); | |
676 | int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, | |
677 | const struct NTFS_DE *new_de, const void *param, | |
78ab59fe | 678 | struct ntfs_fnd *fnd, bool undo); |
4534a70b KK |
679 | int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, |
680 | const void *key, u32 key_len, const void *param); | |
681 | int indx_update_dup(struct ntfs_inode *ni, struct ntfs_sb_info *sbi, | |
682 | const struct ATTR_FILE_NAME *fname, | |
683 | const struct NTFS_DUP_INFO *dup, int sync); | |
684 | ||
e8b8e97f | 685 | /* Globals from inode.c */ |
4534a70b KK |
686 | struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, |
687 | const struct cpu_str *name); | |
688 | int ntfs_set_size(struct inode *inode, u64 new_size); | |
689 | int reset_log_file(struct inode *inode); | |
690 | int ntfs_get_block(struct inode *inode, sector_t vbn, | |
691 | struct buffer_head *bh_result, int create); | |
44ab23b9 MWO |
692 | int ntfs_write_begin(struct file *file, struct address_space *mapping, |
693 | loff_t pos, u32 len, struct page **pagep, void **fsdata); | |
694 | int ntfs_write_end(struct file *file, struct address_space *mapping, | |
695 | loff_t pos, u32 len, u32 copied, struct page *page, | |
696 | void *fsdata); | |
4534a70b KK |
697 | int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc); |
698 | int ntfs_sync_inode(struct inode *inode); | |
699 | int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, | |
700 | struct inode *i2); | |
701 | int inode_write_data(struct inode *inode, const void *data, size_t bytes); | |
702 | struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, | |
703 | struct inode *dir, struct dentry *dentry, | |
704 | const struct cpu_str *uni, umode_t mode, | |
705 | dev_t dev, const char *symname, u32 size, | |
706 | struct ntfs_fnd *fnd); | |
707 | int ntfs_link_inode(struct inode *inode, struct dentry *dentry); | |
708 | int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry); | |
709 | void ntfs_evict_inode(struct inode *inode); | |
710 | extern const struct inode_operations ntfs_link_inode_operations; | |
711 | extern const struct address_space_operations ntfs_aops; | |
712 | extern const struct address_space_operations ntfs_aops_cmpr; | |
713 | ||
e8b8e97f | 714 | /* Globals from name_i.c */ |
4534a70b KK |
715 | int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name, |
716 | const struct cpu_str *uni); | |
717 | struct dentry *ntfs3_get_parent(struct dentry *child); | |
718 | ||
719 | extern const struct inode_operations ntfs_dir_inode_operations; | |
720 | extern const struct inode_operations ntfs_special_inode_operations; | |
721 | ||
e8b8e97f | 722 | /* Globals from record.c */ |
4534a70b KK |
723 | int mi_get(struct ntfs_sb_info *sbi, CLST rno, struct mft_inode **mi); |
724 | void mi_put(struct mft_inode *mi); | |
725 | int mi_init(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno); | |
726 | int mi_read(struct mft_inode *mi, bool is_mft); | |
727 | struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr); | |
728 | // TODO: id? | |
729 | struct ATTRIB *mi_find_attr(struct mft_inode *mi, struct ATTRIB *attr, | |
730 | enum ATTR_TYPE type, const __le16 *name, | |
731 | size_t name_len, const __le16 *id); | |
732 | static inline struct ATTRIB *rec_find_attr_le(struct mft_inode *rec, | |
733 | struct ATTR_LIST_ENTRY *le) | |
734 | { | |
735 | return mi_find_attr(rec, NULL, le->type, le_name(le), le->name_len, | |
736 | &le->id); | |
737 | } | |
738 | int mi_write(struct mft_inode *mi, int wait); | |
739 | int mi_format_new(struct mft_inode *mi, struct ntfs_sb_info *sbi, CLST rno, | |
740 | __le16 flags, bool is_mft); | |
741 | void mi_mark_free(struct mft_inode *mi); | |
742 | struct ATTRIB *mi_insert_attr(struct mft_inode *mi, enum ATTR_TYPE type, | |
743 | const __le16 *name, u8 name_len, u32 asize, | |
744 | u16 name_off); | |
745 | ||
78ab59fe KK |
746 | bool mi_remove_attr(struct ntfs_inode *ni, struct mft_inode *mi, |
747 | struct ATTRIB *attr); | |
4534a70b KK |
748 | bool mi_resize_attr(struct mft_inode *mi, struct ATTRIB *attr, int bytes); |
749 | int mi_pack_runs(struct mft_inode *mi, struct ATTRIB *attr, | |
750 | struct runs_tree *run, CLST len); | |
751 | static inline bool mi_is_ref(const struct mft_inode *mi, | |
752 | const struct MFT_REF *ref) | |
753 | { | |
754 | if (le32_to_cpu(ref->low) != mi->rno) | |
755 | return false; | |
756 | if (ref->seq != mi->mrec->seq) | |
757 | return false; | |
758 | ||
759 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER | |
760 | return le16_to_cpu(ref->high) == (mi->rno >> 32); | |
761 | #else | |
762 | return !ref->high; | |
763 | #endif | |
764 | } | |
765 | ||
766 | static inline void mi_get_ref(const struct mft_inode *mi, struct MFT_REF *ref) | |
767 | { | |
768 | ref->low = cpu_to_le32(mi->rno); | |
769 | #ifdef CONFIG_NTFS3_64BIT_CLUSTER | |
770 | ref->high = cpu_to_le16(mi->rno >> 32); | |
771 | #else | |
772 | ref->high = 0; | |
773 | #endif | |
774 | ref->seq = mi->mrec->seq; | |
775 | } | |
776 | ||
e8b8e97f | 777 | /* Globals from run.c */ |
4534a70b KK |
778 | bool run_lookup_entry(const struct runs_tree *run, CLST vcn, CLST *lcn, |
779 | CLST *len, size_t *index); | |
780 | void run_truncate(struct runs_tree *run, CLST vcn); | |
781 | void run_truncate_head(struct runs_tree *run, CLST vcn); | |
782 | void run_truncate_around(struct runs_tree *run, CLST vcn); | |
783 | bool run_lookup(const struct runs_tree *run, CLST vcn, size_t *Index); | |
784 | bool run_add_entry(struct runs_tree *run, CLST vcn, CLST lcn, CLST len, | |
785 | bool is_mft); | |
786 | bool run_collapse_range(struct runs_tree *run, CLST vcn, CLST len); | |
787 | bool run_get_entry(const struct runs_tree *run, size_t index, CLST *vcn, | |
788 | CLST *lcn, CLST *len); | |
789 | bool run_is_mapped_full(const struct runs_tree *run, CLST svcn, CLST evcn); | |
790 | ||
791 | int run_pack(const struct runs_tree *run, CLST svcn, CLST len, u8 *run_buf, | |
792 | u32 run_buf_size, CLST *packed_vcns); | |
793 | int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, | |
794 | CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, | |
795 | u32 run_buf_size); | |
796 | ||
797 | #ifdef NTFS3_CHECK_FREE_CLST | |
798 | int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, | |
799 | CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, | |
800 | u32 run_buf_size); | |
801 | #else | |
802 | #define run_unpack_ex run_unpack | |
803 | #endif | |
804 | int run_get_highest_vcn(CLST vcn, const u8 *run_buf, u64 *highest_vcn); | |
805 | ||
e8b8e97f | 806 | /* Globals from super.c */ |
4534a70b KK |
807 | void *ntfs_set_shared(void *ptr, u32 bytes); |
808 | void *ntfs_put_shared(void *ptr); | |
809 | void ntfs_unmap_meta(struct super_block *sb, CLST lcn, CLST len); | |
810 | int ntfs_discard(struct ntfs_sb_info *sbi, CLST Lcn, CLST Len); | |
811 | ||
e8b8e97f | 812 | /* Globals from bitmap.c*/ |
4534a70b KK |
813 | int __init ntfs3_init_bitmap(void); |
814 | void ntfs3_exit_bitmap(void); | |
815 | void wnd_close(struct wnd_bitmap *wnd); | |
816 | static inline size_t wnd_zeroes(const struct wnd_bitmap *wnd) | |
817 | { | |
818 | return wnd->total_zeroes; | |
819 | } | |
820 | int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits); | |
821 | int wnd_set_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); | |
822 | int wnd_set_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); | |
823 | bool wnd_is_free(struct wnd_bitmap *wnd, size_t bit, size_t bits); | |
824 | bool wnd_is_used(struct wnd_bitmap *wnd, size_t bit, size_t bits); | |
825 | ||
e8b8e97f | 826 | /* Possible values for 'flags' 'wnd_find'. */ |
4534a70b KK |
827 | #define BITMAP_FIND_MARK_AS_USED 0x01 |
828 | #define BITMAP_FIND_FULL 0x02 | |
829 | size_t wnd_find(struct wnd_bitmap *wnd, size_t to_alloc, size_t hint, | |
830 | size_t flags, size_t *allocated); | |
831 | int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits); | |
832 | void wnd_zone_set(struct wnd_bitmap *wnd, size_t Lcn, size_t Len); | |
833 | int ntfs_trim_fs(struct ntfs_sb_info *sbi, struct fstrim_range *range); | |
834 | ||
e8b8e97f | 835 | /* Globals from upcase.c */ |
4534a70b KK |
836 | int ntfs_cmp_names(const __le16 *s1, size_t l1, const __le16 *s2, size_t l2, |
837 | const u16 *upcase, bool bothcase); | |
838 | int ntfs_cmp_names_cpu(const struct cpu_str *uni1, const struct le_str *uni2, | |
839 | const u16 *upcase, bool bothcase); | |
840 | ||
841 | /* globals from xattr.c */ | |
842 | #ifdef CONFIG_NTFS3_FS_POSIX_ACL | |
f7464060 | 843 | struct posix_acl *ntfs_get_acl(struct inode *inode, int type, bool rcu); |
4534a70b KK |
844 | int ntfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode, |
845 | struct posix_acl *acl, int type); | |
846 | int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode, | |
847 | struct inode *dir); | |
848 | #else | |
849 | #define ntfs_get_acl NULL | |
850 | #define ntfs_set_acl NULL | |
851 | #endif | |
852 | ||
853 | int ntfs_acl_chmod(struct user_namespace *mnt_userns, struct inode *inode); | |
854 | int ntfs_permission(struct user_namespace *mnt_userns, struct inode *inode, | |
855 | int mask); | |
856 | ssize_t ntfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
857 | extern const struct xattr_handler *ntfs_xattr_handlers[]; | |
858 | ||
859 | int ntfs_save_wsl_perm(struct inode *inode); | |
860 | void ntfs_get_wsl_perm(struct inode *inode); | |
861 | ||
862 | /* globals from lznt.c */ | |
863 | struct lznt *get_lznt_ctx(int level); | |
864 | size_t compress_lznt(const void *uncompressed, size_t uncompressed_size, | |
865 | void *compressed, size_t compressed_size, | |
866 | struct lznt *ctx); | |
867 | ssize_t decompress_lznt(const void *compressed, size_t compressed_size, | |
868 | void *uncompressed, size_t uncompressed_size); | |
869 | ||
870 | static inline bool is_ntfs3(struct ntfs_sb_info *sbi) | |
871 | { | |
872 | return sbi->volume.major_ver >= 3; | |
873 | } | |
874 | ||
e8b8e97f | 875 | /* (sb->s_flags & SB_ACTIVE) */ |
4534a70b KK |
876 | static inline bool is_mounted(struct ntfs_sb_info *sbi) |
877 | { | |
878 | return !!sbi->sb->s_root; | |
879 | } | |
880 | ||
881 | static inline bool ntfs_is_meta_file(struct ntfs_sb_info *sbi, CLST rno) | |
882 | { | |
883 | return rno < MFT_REC_FREE || rno == sbi->objid_no || | |
884 | rno == sbi->quota_no || rno == sbi->reparse_no || | |
885 | rno == sbi->usn_jrnl_no; | |
886 | } | |
887 | ||
888 | static inline void ntfs_unmap_page(struct page *page) | |
889 | { | |
890 | kunmap(page); | |
891 | put_page(page); | |
892 | } | |
893 | ||
894 | static inline struct page *ntfs_map_page(struct address_space *mapping, | |
895 | unsigned long index) | |
896 | { | |
897 | struct page *page = read_mapping_page(mapping, index, NULL); | |
898 | ||
19cb4273 | 899 | if (!IS_ERR(page)) |
4534a70b | 900 | kmap(page); |
4534a70b KK |
901 | return page; |
902 | } | |
903 | ||
904 | static inline size_t wnd_zone_bit(const struct wnd_bitmap *wnd) | |
905 | { | |
906 | return wnd->zone_bit; | |
907 | } | |
908 | ||
909 | static inline size_t wnd_zone_len(const struct wnd_bitmap *wnd) | |
910 | { | |
911 | return wnd->zone_end - wnd->zone_bit; | |
912 | } | |
913 | ||
914 | static inline void run_init(struct runs_tree *run) | |
915 | { | |
916 | run->runs = NULL; | |
917 | run->count = 0; | |
918 | run->allocated = 0; | |
919 | } | |
920 | ||
921 | static inline struct runs_tree *run_alloc(void) | |
922 | { | |
195c52bd | 923 | return kzalloc(sizeof(struct runs_tree), GFP_NOFS); |
4534a70b KK |
924 | } |
925 | ||
926 | static inline void run_close(struct runs_tree *run) | |
927 | { | |
195c52bd | 928 | kvfree(run->runs); |
4534a70b KK |
929 | memset(run, 0, sizeof(*run)); |
930 | } | |
931 | ||
932 | static inline void run_free(struct runs_tree *run) | |
933 | { | |
934 | if (run) { | |
195c52bd KA |
935 | kvfree(run->runs); |
936 | kfree(run); | |
4534a70b KK |
937 | } |
938 | } | |
939 | ||
940 | static inline bool run_is_empty(struct runs_tree *run) | |
941 | { | |
942 | return !run->count; | |
943 | } | |
944 | ||
e8b8e97f | 945 | /* NTFS uses quad aligned bitmaps. */ |
4534a70b KK |
946 | static inline size_t bitmap_size(size_t bits) |
947 | { | |
fa3cacf5 | 948 | return ALIGN((bits + 7) >> 3, 8); |
4534a70b KK |
949 | } |
950 | ||
951 | #define _100ns2seconds 10000000 | |
952 | #define SecondsToStartOf1970 0x00000002B6109100 | |
953 | ||
954 | #define NTFS_TIME_GRAN 100 | |
955 | ||
956 | /* | |
e8b8e97f | 957 | * kernel2nt - Converts in-memory kernel timestamp into nt time. |
4534a70b KK |
958 | */ |
959 | static inline __le64 kernel2nt(const struct timespec64 *ts) | |
960 | { | |
961 | // 10^7 units of 100 nanoseconds one second | |
962 | return cpu_to_le64(_100ns2seconds * | |
963 | (ts->tv_sec + SecondsToStartOf1970) + | |
964 | ts->tv_nsec / NTFS_TIME_GRAN); | |
965 | } | |
966 | ||
967 | /* | |
e8b8e97f | 968 | * nt2kernel - Converts on-disk nt time into kernel timestamp. |
4534a70b KK |
969 | */ |
970 | static inline void nt2kernel(const __le64 tm, struct timespec64 *ts) | |
971 | { | |
972 | u64 t = le64_to_cpu(tm) - _100ns2seconds * SecondsToStartOf1970; | |
973 | ||
974 | // WARNING: do_div changes its first argument(!) | |
975 | ts->tv_nsec = do_div(t, _100ns2seconds) * 100; | |
976 | ts->tv_sec = t; | |
977 | } | |
978 | ||
979 | static inline struct ntfs_sb_info *ntfs_sb(struct super_block *sb) | |
980 | { | |
981 | return sb->s_fs_info; | |
982 | } | |
983 | ||
e8b8e97f KA |
984 | /* |
985 | * ntfs_up_cluster - Align up on cluster boundary. | |
986 | */ | |
4534a70b KK |
987 | static inline u64 ntfs_up_cluster(const struct ntfs_sb_info *sbi, u64 size) |
988 | { | |
989 | return (size + sbi->cluster_mask) & sbi->cluster_mask_inv; | |
990 | } | |
991 | ||
e8b8e97f KA |
992 | /* |
993 | * ntfs_up_block - Align up on cluster boundary. | |
994 | */ | |
4534a70b KK |
995 | static inline u64 ntfs_up_block(const struct super_block *sb, u64 size) |
996 | { | |
997 | return (size + sb->s_blocksize - 1) & ~(u64)(sb->s_blocksize - 1); | |
998 | } | |
999 | ||
1000 | static inline CLST bytes_to_cluster(const struct ntfs_sb_info *sbi, u64 size) | |
1001 | { | |
1002 | return (size + sbi->cluster_mask) >> sbi->cluster_bits; | |
1003 | } | |
1004 | ||
1005 | static inline u64 bytes_to_block(const struct super_block *sb, u64 size) | |
1006 | { | |
1007 | return (size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1008 | } | |
1009 | ||
1010 | static inline struct buffer_head *ntfs_bread(struct super_block *sb, | |
1011 | sector_t block) | |
1012 | { | |
1013 | struct buffer_head *bh = sb_bread(sb, block); | |
1014 | ||
1015 | if (bh) | |
1016 | return bh; | |
1017 | ||
1018 | ntfs_err(sb, "failed to read volume at offset 0x%llx", | |
1019 | (u64)block << sb->s_blocksize_bits); | |
1020 | return NULL; | |
1021 | } | |
1022 | ||
4534a70b KK |
1023 | static inline struct ntfs_inode *ntfs_i(struct inode *inode) |
1024 | { | |
1025 | return container_of(inode, struct ntfs_inode, vfs_inode); | |
1026 | } | |
1027 | ||
1028 | static inline bool is_compressed(const struct ntfs_inode *ni) | |
1029 | { | |
1030 | return (ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) || | |
1031 | (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); | |
1032 | } | |
1033 | ||
1034 | static inline int ni_ext_compress_bits(const struct ntfs_inode *ni) | |
1035 | { | |
1036 | return 0xb + (ni->ni_flags & NI_FLAG_COMPRESSED_MASK); | |
1037 | } | |
1038 | ||
e8b8e97f | 1039 | /* Bits - 0xc, 0xd, 0xe, 0xf, 0x10 */ |
4534a70b KK |
1040 | static inline void ni_set_ext_compress_bits(struct ntfs_inode *ni, u8 bits) |
1041 | { | |
1042 | ni->ni_flags |= (bits - 0xb) & NI_FLAG_COMPRESSED_MASK; | |
1043 | } | |
1044 | ||
1045 | static inline bool is_dedup(const struct ntfs_inode *ni) | |
1046 | { | |
1047 | return ni->ni_flags & NI_FLAG_DEDUPLICATED; | |
1048 | } | |
1049 | ||
1050 | static inline bool is_encrypted(const struct ntfs_inode *ni) | |
1051 | { | |
1052 | return ni->std_fa & FILE_ATTRIBUTE_ENCRYPTED; | |
1053 | } | |
1054 | ||
1055 | static inline bool is_sparsed(const struct ntfs_inode *ni) | |
1056 | { | |
1057 | return ni->std_fa & FILE_ATTRIBUTE_SPARSE_FILE; | |
1058 | } | |
1059 | ||
1060 | static inline int is_resident(struct ntfs_inode *ni) | |
1061 | { | |
1062 | return ni->ni_flags & NI_FLAG_RESIDENT; | |
1063 | } | |
1064 | ||
1065 | static inline void le16_sub_cpu(__le16 *var, u16 val) | |
1066 | { | |
1067 | *var = cpu_to_le16(le16_to_cpu(*var) - val); | |
1068 | } | |
1069 | ||
1070 | static inline void le32_sub_cpu(__le32 *var, u32 val) | |
1071 | { | |
1072 | *var = cpu_to_le32(le32_to_cpu(*var) - val); | |
1073 | } | |
1074 | ||
1075 | static inline void nb_put(struct ntfs_buffers *nb) | |
1076 | { | |
1077 | u32 i, nbufs = nb->nbufs; | |
1078 | ||
1079 | if (!nbufs) | |
1080 | return; | |
1081 | ||
1082 | for (i = 0; i < nbufs; i++) | |
1083 | put_bh(nb->bh[i]); | |
1084 | nb->nbufs = 0; | |
1085 | } | |
1086 | ||
1087 | static inline void put_indx_node(struct indx_node *in) | |
1088 | { | |
1089 | if (!in) | |
1090 | return; | |
1091 | ||
195c52bd | 1092 | kfree(in->index); |
4534a70b | 1093 | nb_put(&in->nb); |
195c52bd | 1094 | kfree(in); |
4534a70b KK |
1095 | } |
1096 | ||
1097 | static inline void mi_clear(struct mft_inode *mi) | |
1098 | { | |
1099 | nb_put(&mi->nb); | |
195c52bd | 1100 | kfree(mi->mrec); |
4534a70b KK |
1101 | mi->mrec = NULL; |
1102 | } | |
1103 | ||
1104 | static inline void ni_lock(struct ntfs_inode *ni) | |
1105 | { | |
1106 | mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_NORMAL); | |
1107 | } | |
1108 | ||
1109 | static inline void ni_lock_dir(struct ntfs_inode *ni) | |
1110 | { | |
1111 | mutex_lock_nested(&ni->ni_lock, NTFS_INODE_MUTEX_PARENT); | |
1112 | } | |
1113 | ||
1114 | static inline void ni_unlock(struct ntfs_inode *ni) | |
1115 | { | |
1116 | mutex_unlock(&ni->ni_lock); | |
1117 | } | |
1118 | ||
1119 | static inline int ni_trylock(struct ntfs_inode *ni) | |
1120 | { | |
1121 | return mutex_trylock(&ni->ni_lock); | |
1122 | } | |
1123 | ||
1124 | static inline int attr_load_runs_attr(struct ntfs_inode *ni, | |
1125 | struct ATTRIB *attr, | |
1126 | struct runs_tree *run, CLST vcn) | |
1127 | { | |
1128 | return attr_load_runs_vcn(ni, attr->type, attr_name(attr), | |
1129 | attr->name_len, run, vcn); | |
1130 | } | |
1131 | ||
1132 | static inline void le64_sub_cpu(__le64 *var, u64 val) | |
1133 | { | |
1134 | *var = cpu_to_le64(le64_to_cpu(*var) - val); | |
1135 | } | |
87790b65 KA |
1136 | |
1137 | #endif /* _LINUX_NTFS3_NTFS_FS_H */ |