Commit | Line | Data |
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82cae269 KK |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * | |
4 | * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. | |
5 | * | |
6 | */ | |
7 | ||
82cae269 KK |
8 | #include <linux/buffer_head.h> |
9 | #include <linux/fs.h> | |
82cae269 KK |
10 | #include <linux/mpage.h> |
11 | #include <linux/namei.h> | |
12 | #include <linux/nls.h> | |
13 | #include <linux/uio.h> | |
82cae269 KK |
14 | #include <linux/writeback.h> |
15 | ||
16 | #include "debug.h" | |
17 | #include "ntfs.h" | |
18 | #include "ntfs_fs.h" | |
19 | ||
20 | /* | |
e8b8e97f | 21 | * ntfs_read_mft - Read record and parses MFT. |
82cae269 KK |
22 | */ |
23 | static struct inode *ntfs_read_mft(struct inode *inode, | |
24 | const struct cpu_str *name, | |
25 | const struct MFT_REF *ref) | |
26 | { | |
27 | int err = 0; | |
28 | struct ntfs_inode *ni = ntfs_i(inode); | |
29 | struct super_block *sb = inode->i_sb; | |
30 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
31 | mode_t mode = 0; | |
32 | struct ATTR_STD_INFO5 *std5 = NULL; | |
33 | struct ATTR_LIST_ENTRY *le; | |
34 | struct ATTRIB *attr; | |
35 | bool is_match = false; | |
36 | bool is_root = false; | |
37 | bool is_dir; | |
38 | unsigned long ino = inode->i_ino; | |
39 | u32 rp_fa = 0, asize, t32; | |
40 | u16 roff, rsize, names = 0; | |
41 | const struct ATTR_FILE_NAME *fname = NULL; | |
42 | const struct INDEX_ROOT *root; | |
43 | struct REPARSE_DATA_BUFFER rp; // 0x18 bytes | |
44 | u64 t64; | |
45 | struct MFT_REC *rec; | |
46 | struct runs_tree *run; | |
47 | ||
48 | inode->i_op = NULL; | |
49 | /* Setup 'uid' and 'gid' */ | |
564c97bd KA |
50 | inode->i_uid = sbi->options->fs_uid; |
51 | inode->i_gid = sbi->options->fs_gid; | |
82cae269 KK |
52 | |
53 | err = mi_init(&ni->mi, sbi, ino); | |
54 | if (err) | |
55 | goto out; | |
56 | ||
57 | if (!sbi->mft.ni && ino == MFT_REC_MFT && !sb->s_root) { | |
58 | t64 = sbi->mft.lbo >> sbi->cluster_bits; | |
59 | t32 = bytes_to_cluster(sbi, MFT_REC_VOL * sbi->record_size); | |
60 | sbi->mft.ni = ni; | |
61 | init_rwsem(&ni->file.run_lock); | |
62 | ||
63 | if (!run_add_entry(&ni->file.run, 0, t64, t32, true)) { | |
64 | err = -ENOMEM; | |
65 | goto out; | |
66 | } | |
67 | } | |
68 | ||
69 | err = mi_read(&ni->mi, ino == MFT_REC_MFT); | |
70 | ||
71 | if (err) | |
72 | goto out; | |
73 | ||
74 | rec = ni->mi.mrec; | |
75 | ||
76 | if (sbi->flags & NTFS_FLAGS_LOG_REPLAYING) { | |
77 | ; | |
78 | } else if (ref->seq != rec->seq) { | |
79 | err = -EINVAL; | |
80 | ntfs_err(sb, "MFT: r=%lx, expect seq=%x instead of %x!", ino, | |
81 | le16_to_cpu(ref->seq), le16_to_cpu(rec->seq)); | |
82 | goto out; | |
83 | } else if (!is_rec_inuse(rec)) { | |
0e8235d2 | 84 | err = -ESTALE; |
82cae269 KK |
85 | ntfs_err(sb, "Inode r=%x is not in use!", (u32)ino); |
86 | goto out; | |
87 | } | |
88 | ||
89 | if (le32_to_cpu(rec->total) != sbi->record_size) { | |
d3624466 | 90 | /* Bad inode? */ |
82cae269 KK |
91 | err = -EINVAL; |
92 | goto out; | |
93 | } | |
94 | ||
0e8235d2 KK |
95 | if (!is_rec_base(rec)) { |
96 | err = -EINVAL; | |
97 | goto out; | |
98 | } | |
82cae269 | 99 | |
e8b8e97f | 100 | /* Record should contain $I30 root. */ |
82cae269 KK |
101 | is_dir = rec->flags & RECORD_FLAG_DIR; |
102 | ||
103 | inode->i_generation = le16_to_cpu(rec->seq); | |
104 | ||
e8b8e97f | 105 | /* Enumerate all struct Attributes MFT. */ |
82cae269 KK |
106 | le = NULL; |
107 | attr = NULL; | |
108 | ||
109 | /* | |
e8b8e97f | 110 | * To reduce tab pressure use goto instead of |
82cae269 KK |
111 | * while( (attr = ni_enum_attr_ex(ni, attr, &le, NULL) )) |
112 | */ | |
113 | next_attr: | |
114 | run = NULL; | |
115 | err = -EINVAL; | |
116 | attr = ni_enum_attr_ex(ni, attr, &le, NULL); | |
117 | if (!attr) | |
118 | goto end_enum; | |
119 | ||
120 | if (le && le->vcn) { | |
e8b8e97f | 121 | /* This is non primary attribute segment. Ignore if not MFT. */ |
82cae269 KK |
122 | if (ino != MFT_REC_MFT || attr->type != ATTR_DATA) |
123 | goto next_attr; | |
124 | ||
125 | run = &ni->file.run; | |
126 | asize = le32_to_cpu(attr->size); | |
127 | goto attr_unpack_run; | |
128 | } | |
129 | ||
130 | roff = attr->non_res ? 0 : le16_to_cpu(attr->res.data_off); | |
131 | rsize = attr->non_res ? 0 : le32_to_cpu(attr->res.data_size); | |
132 | asize = le32_to_cpu(attr->size); | |
133 | ||
4f1dc7d9 EL |
134 | if (le16_to_cpu(attr->name_off) + attr->name_len > asize) |
135 | goto out; | |
136 | ||
019d22eb AN |
137 | if (attr->non_res) { |
138 | t64 = le64_to_cpu(attr->nres.alloc_size); | |
139 | if (le64_to_cpu(attr->nres.data_size) > t64 || | |
140 | le64_to_cpu(attr->nres.valid_size) > t64) | |
141 | goto out; | |
142 | } | |
143 | ||
82cae269 KK |
144 | switch (attr->type) { |
145 | case ATTR_STD: | |
146 | if (attr->non_res || | |
147 | asize < sizeof(struct ATTR_STD_INFO) + roff || | |
148 | rsize < sizeof(struct ATTR_STD_INFO)) | |
149 | goto out; | |
150 | ||
151 | if (std5) | |
152 | goto next_attr; | |
153 | ||
154 | std5 = Add2Ptr(attr, roff); | |
155 | ||
156 | #ifdef STATX_BTIME | |
157 | nt2kernel(std5->cr_time, &ni->i_crtime); | |
158 | #endif | |
159 | nt2kernel(std5->a_time, &inode->i_atime); | |
160 | nt2kernel(std5->c_time, &inode->i_ctime); | |
161 | nt2kernel(std5->m_time, &inode->i_mtime); | |
162 | ||
163 | ni->std_fa = std5->fa; | |
164 | ||
165 | if (asize >= sizeof(struct ATTR_STD_INFO5) + roff && | |
166 | rsize >= sizeof(struct ATTR_STD_INFO5)) | |
167 | ni->std_security_id = std5->security_id; | |
168 | goto next_attr; | |
169 | ||
170 | case ATTR_LIST: | |
171 | if (attr->name_len || le || ino == MFT_REC_LOG) | |
172 | goto out; | |
173 | ||
174 | err = ntfs_load_attr_list(ni, attr); | |
175 | if (err) | |
176 | goto out; | |
177 | ||
178 | le = NULL; | |
179 | attr = NULL; | |
180 | goto next_attr; | |
181 | ||
182 | case ATTR_NAME: | |
183 | if (attr->non_res || asize < SIZEOF_ATTRIBUTE_FILENAME + roff || | |
184 | rsize < SIZEOF_ATTRIBUTE_FILENAME) | |
185 | goto out; | |
186 | ||
187 | fname = Add2Ptr(attr, roff); | |
188 | if (fname->type == FILE_NAME_DOS) | |
189 | goto next_attr; | |
190 | ||
191 | names += 1; | |
192 | if (name && name->len == fname->name_len && | |
193 | !ntfs_cmp_names_cpu(name, (struct le_str *)&fname->name_len, | |
194 | NULL, false)) | |
195 | is_match = true; | |
196 | ||
197 | goto next_attr; | |
198 | ||
199 | case ATTR_DATA: | |
200 | if (is_dir) { | |
e8b8e97f | 201 | /* Ignore data attribute in dir record. */ |
82cae269 KK |
202 | goto next_attr; |
203 | } | |
204 | ||
205 | if (ino == MFT_REC_BADCLUST && !attr->non_res) | |
206 | goto next_attr; | |
207 | ||
208 | if (attr->name_len && | |
209 | ((ino != MFT_REC_BADCLUST || !attr->non_res || | |
210 | attr->name_len != ARRAY_SIZE(BAD_NAME) || | |
211 | memcmp(attr_name(attr), BAD_NAME, sizeof(BAD_NAME))) && | |
212 | (ino != MFT_REC_SECURE || !attr->non_res || | |
213 | attr->name_len != ARRAY_SIZE(SDS_NAME) || | |
214 | memcmp(attr_name(attr), SDS_NAME, sizeof(SDS_NAME))))) { | |
e8b8e97f | 215 | /* File contains stream attribute. Ignore it. */ |
82cae269 KK |
216 | goto next_attr; |
217 | } | |
218 | ||
219 | if (is_attr_sparsed(attr)) | |
220 | ni->std_fa |= FILE_ATTRIBUTE_SPARSE_FILE; | |
221 | else | |
222 | ni->std_fa &= ~FILE_ATTRIBUTE_SPARSE_FILE; | |
223 | ||
224 | if (is_attr_compressed(attr)) | |
225 | ni->std_fa |= FILE_ATTRIBUTE_COMPRESSED; | |
226 | else | |
227 | ni->std_fa &= ~FILE_ATTRIBUTE_COMPRESSED; | |
228 | ||
229 | if (is_attr_encrypted(attr)) | |
230 | ni->std_fa |= FILE_ATTRIBUTE_ENCRYPTED; | |
231 | else | |
232 | ni->std_fa &= ~FILE_ATTRIBUTE_ENCRYPTED; | |
233 | ||
234 | if (!attr->non_res) { | |
235 | ni->i_valid = inode->i_size = rsize; | |
236 | inode_set_bytes(inode, rsize); | |
82cae269 KK |
237 | } |
238 | ||
564c97bd | 239 | mode = S_IFREG | (0777 & sbi->options->fs_fmask_inv); |
82cae269 KK |
240 | |
241 | if (!attr->non_res) { | |
242 | ni->ni_flags |= NI_FLAG_RESIDENT; | |
243 | goto next_attr; | |
244 | } | |
245 | ||
246 | inode_set_bytes(inode, attr_ondisk_size(attr)); | |
247 | ||
248 | ni->i_valid = le64_to_cpu(attr->nres.valid_size); | |
249 | inode->i_size = le64_to_cpu(attr->nres.data_size); | |
250 | if (!attr->nres.alloc_size) | |
251 | goto next_attr; | |
252 | ||
253 | run = ino == MFT_REC_BITMAP ? &sbi->used.bitmap.run | |
254 | : &ni->file.run; | |
255 | break; | |
256 | ||
257 | case ATTR_ROOT: | |
258 | if (attr->non_res) | |
259 | goto out; | |
260 | ||
261 | root = Add2Ptr(attr, roff); | |
262 | is_root = true; | |
263 | ||
264 | if (attr->name_len != ARRAY_SIZE(I30_NAME) || | |
265 | memcmp(attr_name(attr), I30_NAME, sizeof(I30_NAME))) | |
266 | goto next_attr; | |
267 | ||
268 | if (root->type != ATTR_NAME || | |
269 | root->rule != NTFS_COLLATION_TYPE_FILENAME) | |
270 | goto out; | |
271 | ||
272 | if (!is_dir) | |
273 | goto next_attr; | |
274 | ||
275 | ni->ni_flags |= NI_FLAG_DIR; | |
276 | ||
277 | err = indx_init(&ni->dir, sbi, attr, INDEX_MUTEX_I30); | |
278 | if (err) | |
279 | goto out; | |
280 | ||
281 | mode = sb->s_root | |
564c97bd | 282 | ? (S_IFDIR | (0777 & sbi->options->fs_dmask_inv)) |
82cae269 KK |
283 | : (S_IFDIR | 0777); |
284 | goto next_attr; | |
285 | ||
286 | case ATTR_ALLOC: | |
287 | if (!is_root || attr->name_len != ARRAY_SIZE(I30_NAME) || | |
288 | memcmp(attr_name(attr), I30_NAME, sizeof(I30_NAME))) | |
289 | goto next_attr; | |
290 | ||
291 | inode->i_size = le64_to_cpu(attr->nres.data_size); | |
292 | ni->i_valid = le64_to_cpu(attr->nres.valid_size); | |
293 | inode_set_bytes(inode, le64_to_cpu(attr->nres.alloc_size)); | |
294 | ||
295 | run = &ni->dir.alloc_run; | |
296 | break; | |
297 | ||
298 | case ATTR_BITMAP: | |
299 | if (ino == MFT_REC_MFT) { | |
300 | if (!attr->non_res) | |
301 | goto out; | |
302 | #ifndef CONFIG_NTFS3_64BIT_CLUSTER | |
303 | /* 0x20000000 = 2^32 / 8 */ | |
304 | if (le64_to_cpu(attr->nres.alloc_size) >= 0x20000000) | |
305 | goto out; | |
306 | #endif | |
307 | run = &sbi->mft.bitmap.run; | |
308 | break; | |
309 | } else if (is_dir && attr->name_len == ARRAY_SIZE(I30_NAME) && | |
310 | !memcmp(attr_name(attr), I30_NAME, | |
311 | sizeof(I30_NAME)) && | |
312 | attr->non_res) { | |
313 | run = &ni->dir.bitmap_run; | |
314 | break; | |
315 | } | |
316 | goto next_attr; | |
317 | ||
318 | case ATTR_REPARSE: | |
319 | if (attr->name_len) | |
320 | goto next_attr; | |
321 | ||
322 | rp_fa = ni_parse_reparse(ni, attr, &rp); | |
323 | switch (rp_fa) { | |
324 | case REPARSE_LINK: | |
22b05f1a KK |
325 | /* |
326 | * Normal symlink. | |
327 | * Assume one unicode symbol == one utf8. | |
328 | */ | |
329 | inode->i_size = le16_to_cpu(rp.SymbolicLinkReparseBuffer | |
330 | .PrintNameLength) / | |
331 | sizeof(u16); | |
82cae269 | 332 | |
82cae269 KK |
333 | ni->i_valid = inode->i_size; |
334 | ||
e8b8e97f | 335 | /* Clear directory bit. */ |
82cae269 KK |
336 | if (ni->ni_flags & NI_FLAG_DIR) { |
337 | indx_clear(&ni->dir); | |
338 | memset(&ni->dir, 0, sizeof(ni->dir)); | |
339 | ni->ni_flags &= ~NI_FLAG_DIR; | |
340 | } else { | |
341 | run_close(&ni->file.run); | |
342 | } | |
343 | mode = S_IFLNK | 0777; | |
344 | is_dir = false; | |
345 | if (attr->non_res) { | |
346 | run = &ni->file.run; | |
e8b8e97f | 347 | goto attr_unpack_run; // Double break. |
82cae269 KK |
348 | } |
349 | break; | |
350 | ||
351 | case REPARSE_COMPRESSED: | |
352 | break; | |
353 | ||
354 | case REPARSE_DEDUPLICATED: | |
355 | break; | |
356 | } | |
357 | goto next_attr; | |
358 | ||
359 | case ATTR_EA_INFO: | |
360 | if (!attr->name_len && | |
361 | resident_data_ex(attr, sizeof(struct EA_INFO))) { | |
362 | ni->ni_flags |= NI_FLAG_EA; | |
363 | /* | |
364 | * ntfs_get_wsl_perm updates inode->i_uid, inode->i_gid, inode->i_mode | |
365 | */ | |
366 | inode->i_mode = mode; | |
367 | ntfs_get_wsl_perm(inode); | |
368 | mode = inode->i_mode; | |
369 | } | |
370 | goto next_attr; | |
371 | ||
372 | default: | |
373 | goto next_attr; | |
374 | } | |
375 | ||
376 | attr_unpack_run: | |
377 | roff = le16_to_cpu(attr->nres.run_off); | |
378 | ||
6db62086 EL |
379 | if (roff > asize) { |
380 | err = -EINVAL; | |
381 | goto out; | |
382 | } | |
383 | ||
82cae269 | 384 | t64 = le64_to_cpu(attr->nres.svcn); |
887bfc54 | 385 | |
82cae269 KK |
386 | err = run_unpack_ex(run, sbi, ino, t64, le64_to_cpu(attr->nres.evcn), |
387 | t64, Add2Ptr(attr, roff), asize - roff); | |
388 | if (err < 0) | |
389 | goto out; | |
390 | err = 0; | |
391 | goto next_attr; | |
392 | ||
393 | end_enum: | |
394 | ||
395 | if (!std5) | |
396 | goto out; | |
397 | ||
398 | if (!is_match && name) { | |
e8b8e97f | 399 | /* Reuse rec as buffer for ascii name. */ |
82cae269 KK |
400 | err = -ENOENT; |
401 | goto out; | |
402 | } | |
403 | ||
404 | if (std5->fa & FILE_ATTRIBUTE_READONLY) | |
405 | mode &= ~0222; | |
406 | ||
407 | if (!names) { | |
408 | err = -EINVAL; | |
409 | goto out; | |
410 | } | |
411 | ||
78ab59fe KK |
412 | if (names != le16_to_cpu(rec->hard_links)) { |
413 | /* Correct minor error on the fly. Do not mark inode as dirty. */ | |
414 | rec->hard_links = cpu_to_le16(names); | |
415 | ni->mi.dirty = true; | |
416 | } | |
417 | ||
82cae269 KK |
418 | set_nlink(inode, names); |
419 | ||
420 | if (S_ISDIR(mode)) { | |
421 | ni->std_fa |= FILE_ATTRIBUTE_DIRECTORY; | |
422 | ||
423 | /* | |
e8b8e97f | 424 | * Dot and dot-dot should be included in count but was not |
82cae269 | 425 | * included in enumeration. |
e8b8e97f | 426 | * Usually a hard links to directories are disabled. |
82cae269 KK |
427 | */ |
428 | inode->i_op = &ntfs_dir_inode_operations; | |
429 | inode->i_fop = &ntfs_dir_operations; | |
430 | ni->i_valid = 0; | |
431 | } else if (S_ISLNK(mode)) { | |
432 | ni->std_fa &= ~FILE_ATTRIBUTE_DIRECTORY; | |
433 | inode->i_op = &ntfs_link_inode_operations; | |
434 | inode->i_fop = NULL; | |
22b05f1a | 435 | inode_nohighmem(inode); |
82cae269 KK |
436 | } else if (S_ISREG(mode)) { |
437 | ni->std_fa &= ~FILE_ATTRIBUTE_DIRECTORY; | |
438 | inode->i_op = &ntfs_file_inode_operations; | |
439 | inode->i_fop = &ntfs_file_operations; | |
440 | inode->i_mapping->a_ops = | |
441 | is_compressed(ni) ? &ntfs_aops_cmpr : &ntfs_aops; | |
442 | if (ino != MFT_REC_MFT) | |
443 | init_rwsem(&ni->file.run_lock); | |
444 | } else if (S_ISCHR(mode) || S_ISBLK(mode) || S_ISFIFO(mode) || | |
445 | S_ISSOCK(mode)) { | |
446 | inode->i_op = &ntfs_special_inode_operations; | |
447 | init_special_inode(inode, mode, inode->i_rdev); | |
448 | } else if (fname && fname->home.low == cpu_to_le32(MFT_REC_EXTEND) && | |
449 | fname->home.seq == cpu_to_le16(MFT_REC_EXTEND)) { | |
e8b8e97f | 450 | /* Records in $Extend are not a files or general directories. */ |
37a530bf | 451 | inode->i_op = &ntfs_file_inode_operations; |
82cae269 KK |
452 | } else { |
453 | err = -EINVAL; | |
454 | goto out; | |
455 | } | |
456 | ||
564c97bd | 457 | if ((sbi->options->sys_immutable && |
82cae269 KK |
458 | (std5->fa & FILE_ATTRIBUTE_SYSTEM)) && |
459 | !S_ISFIFO(mode) && !S_ISSOCK(mode) && !S_ISLNK(mode)) { | |
460 | inode->i_flags |= S_IMMUTABLE; | |
461 | } else { | |
462 | inode->i_flags &= ~S_IMMUTABLE; | |
463 | } | |
464 | ||
465 | inode->i_mode = mode; | |
466 | if (!(ni->ni_flags & NI_FLAG_EA)) { | |
e8b8e97f | 467 | /* If no xattr then no security (stored in xattr). */ |
82cae269 KK |
468 | inode->i_flags |= S_NOSEC; |
469 | } | |
470 | ||
82cae269 KK |
471 | if (ino == MFT_REC_MFT && !sb->s_root) |
472 | sbi->mft.ni = NULL; | |
473 | ||
474 | unlock_new_inode(inode); | |
475 | ||
476 | return inode; | |
477 | ||
478 | out: | |
479 | if (ino == MFT_REC_MFT && !sb->s_root) | |
480 | sbi->mft.ni = NULL; | |
481 | ||
482 | iget_failed(inode); | |
483 | return ERR_PTR(err); | |
484 | } | |
485 | ||
e8b8e97f KA |
486 | /* |
487 | * ntfs_test_inode | |
488 | * | |
489 | * Return: 1 if match. | |
490 | */ | |
82cae269 KK |
491 | static int ntfs_test_inode(struct inode *inode, void *data) |
492 | { | |
493 | struct MFT_REF *ref = data; | |
494 | ||
495 | return ino_get(ref) == inode->i_ino; | |
496 | } | |
497 | ||
498 | static int ntfs_set_inode(struct inode *inode, void *data) | |
499 | { | |
500 | const struct MFT_REF *ref = data; | |
501 | ||
502 | inode->i_ino = ino_get(ref); | |
503 | return 0; | |
504 | } | |
505 | ||
506 | struct inode *ntfs_iget5(struct super_block *sb, const struct MFT_REF *ref, | |
507 | const struct cpu_str *name) | |
508 | { | |
509 | struct inode *inode; | |
510 | ||
511 | inode = iget5_locked(sb, ino_get(ref), ntfs_test_inode, ntfs_set_inode, | |
512 | (void *)ref); | |
513 | if (unlikely(!inode)) | |
514 | return ERR_PTR(-ENOMEM); | |
515 | ||
516 | /* If this is a freshly allocated inode, need to read it now. */ | |
517 | if (inode->i_state & I_NEW) | |
518 | inode = ntfs_read_mft(inode, name, ref); | |
519 | else if (ref->seq != ntfs_i(inode)->mi.mrec->seq) { | |
e8b8e97f | 520 | /* Inode overlaps? */ |
c12df45e | 521 | _ntfs_bad_inode(inode); |
82cae269 KK |
522 | } |
523 | ||
0e8235d2 KK |
524 | if (IS_ERR(inode) && name) |
525 | ntfs_set_state(sb->s_fs_info, NTFS_DIRTY_ERROR); | |
526 | ||
82cae269 KK |
527 | return inode; |
528 | } | |
529 | ||
530 | enum get_block_ctx { | |
531 | GET_BLOCK_GENERAL = 0, | |
532 | GET_BLOCK_WRITE_BEGIN = 1, | |
533 | GET_BLOCK_DIRECT_IO_R = 2, | |
534 | GET_BLOCK_DIRECT_IO_W = 3, | |
535 | GET_BLOCK_BMAP = 4, | |
536 | }; | |
537 | ||
538 | static noinline int ntfs_get_block_vbo(struct inode *inode, u64 vbo, | |
539 | struct buffer_head *bh, int create, | |
540 | enum get_block_ctx ctx) | |
541 | { | |
542 | struct super_block *sb = inode->i_sb; | |
543 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
544 | struct ntfs_inode *ni = ntfs_i(inode); | |
545 | struct page *page = bh->b_page; | |
546 | u8 cluster_bits = sbi->cluster_bits; | |
547 | u32 block_size = sb->s_blocksize; | |
548 | u64 bytes, lbo, valid; | |
549 | u32 off; | |
550 | int err; | |
551 | CLST vcn, lcn, len; | |
552 | bool new; | |
553 | ||
e8b8e97f | 554 | /* Clear previous state. */ |
82cae269 KK |
555 | clear_buffer_new(bh); |
556 | clear_buffer_uptodate(bh); | |
557 | ||
82cae269 KK |
558 | if (is_resident(ni)) { |
559 | ni_lock(ni); | |
560 | err = attr_data_read_resident(ni, page); | |
561 | ni_unlock(ni); | |
562 | ||
563 | if (!err) | |
564 | set_buffer_uptodate(bh); | |
565 | bh->b_size = block_size; | |
566 | return err; | |
567 | } | |
568 | ||
569 | vcn = vbo >> cluster_bits; | |
570 | off = vbo & sbi->cluster_mask; | |
571 | new = false; | |
572 | ||
c380b52f KK |
573 | err = attr_data_get_block(ni, vcn, 1, &lcn, &len, create ? &new : NULL, |
574 | create && sbi->cluster_size > PAGE_SIZE); | |
82cae269 KK |
575 | if (err) |
576 | goto out; | |
577 | ||
578 | if (!len) | |
579 | return 0; | |
580 | ||
581 | bytes = ((u64)len << cluster_bits) - off; | |
582 | ||
583 | if (lcn == SPARSE_LCN) { | |
584 | if (!create) { | |
585 | if (bh->b_size > bytes) | |
586 | bh->b_size = bytes; | |
587 | return 0; | |
588 | } | |
589 | WARN_ON(1); | |
590 | } | |
591 | ||
c380b52f | 592 | if (new) |
82cae269 | 593 | set_buffer_new(bh); |
82cae269 KK |
594 | |
595 | lbo = ((u64)lcn << cluster_bits) + off; | |
596 | ||
597 | set_buffer_mapped(bh); | |
598 | bh->b_bdev = sb->s_bdev; | |
599 | bh->b_blocknr = lbo >> sb->s_blocksize_bits; | |
600 | ||
601 | valid = ni->i_valid; | |
602 | ||
603 | if (ctx == GET_BLOCK_DIRECT_IO_W) { | |
e8b8e97f | 604 | /* ntfs_direct_IO will update ni->i_valid. */ |
82cae269 KK |
605 | if (vbo >= valid) |
606 | set_buffer_new(bh); | |
607 | } else if (create) { | |
d3624466 | 608 | /* Normal write. */ |
82cae269 KK |
609 | if (bytes > bh->b_size) |
610 | bytes = bh->b_size; | |
611 | ||
612 | if (vbo >= valid) | |
613 | set_buffer_new(bh); | |
614 | ||
615 | if (vbo + bytes > valid) { | |
616 | ni->i_valid = vbo + bytes; | |
617 | mark_inode_dirty(inode); | |
618 | } | |
619 | } else if (vbo >= valid) { | |
e8b8e97f | 620 | /* Read out of valid data. */ |
82cae269 KK |
621 | clear_buffer_mapped(bh); |
622 | } else if (vbo + bytes <= valid) { | |
e8b8e97f | 623 | /* Normal read. */ |
82cae269 | 624 | } else if (vbo + block_size <= valid) { |
e8b8e97f | 625 | /* Normal short read. */ |
82cae269 KK |
626 | bytes = block_size; |
627 | } else { | |
628 | /* | |
e8b8e97f | 629 | * Read across valid size: vbo < valid && valid < vbo + block_size |
82cae269 KK |
630 | */ |
631 | bytes = block_size; | |
632 | ||
633 | if (page) { | |
634 | u32 voff = valid - vbo; | |
635 | ||
636 | bh->b_size = block_size; | |
637 | off = vbo & (PAGE_SIZE - 1); | |
638 | set_bh_page(bh, page, off); | |
6bf414a0 ZY |
639 | err = bh_read(bh, 0); |
640 | if (err < 0) | |
82cae269 | 641 | goto out; |
82cae269 KK |
642 | zero_user_segment(page, off + voff, off + block_size); |
643 | } | |
644 | } | |
645 | ||
646 | if (bh->b_size > bytes) | |
647 | bh->b_size = bytes; | |
648 | ||
649 | #ifndef __LP64__ | |
650 | if (ctx == GET_BLOCK_DIRECT_IO_W || ctx == GET_BLOCK_DIRECT_IO_R) { | |
651 | static_assert(sizeof(size_t) < sizeof(loff_t)); | |
652 | if (bytes > 0x40000000u) | |
653 | bh->b_size = 0x40000000u; | |
654 | } | |
655 | #endif | |
656 | ||
657 | return 0; | |
658 | ||
659 | out: | |
660 | return err; | |
661 | } | |
662 | ||
663 | int ntfs_get_block(struct inode *inode, sector_t vbn, | |
664 | struct buffer_head *bh_result, int create) | |
665 | { | |
666 | return ntfs_get_block_vbo(inode, (u64)vbn << inode->i_blkbits, | |
667 | bh_result, create, GET_BLOCK_GENERAL); | |
668 | } | |
669 | ||
670 | static int ntfs_get_block_bmap(struct inode *inode, sector_t vsn, | |
671 | struct buffer_head *bh_result, int create) | |
672 | { | |
673 | return ntfs_get_block_vbo(inode, | |
674 | (u64)vsn << inode->i_sb->s_blocksize_bits, | |
675 | bh_result, create, GET_BLOCK_BMAP); | |
676 | } | |
677 | ||
678 | static sector_t ntfs_bmap(struct address_space *mapping, sector_t block) | |
679 | { | |
680 | return generic_block_bmap(mapping, block, ntfs_get_block_bmap); | |
681 | } | |
682 | ||
f132ab7d | 683 | static int ntfs_read_folio(struct file *file, struct folio *folio) |
82cae269 | 684 | { |
f132ab7d | 685 | struct page *page = &folio->page; |
82cae269 KK |
686 | int err; |
687 | struct address_space *mapping = page->mapping; | |
688 | struct inode *inode = mapping->host; | |
689 | struct ntfs_inode *ni = ntfs_i(inode); | |
690 | ||
691 | if (is_resident(ni)) { | |
692 | ni_lock(ni); | |
693 | err = attr_data_read_resident(ni, page); | |
694 | ni_unlock(ni); | |
695 | if (err != E_NTFS_NONRESIDENT) { | |
696 | unlock_page(page); | |
697 | return err; | |
698 | } | |
699 | } | |
700 | ||
701 | if (is_compressed(ni)) { | |
702 | ni_lock(ni); | |
703 | err = ni_readpage_cmpr(ni, page); | |
704 | ni_unlock(ni); | |
705 | return err; | |
706 | } | |
707 | ||
e8b8e97f | 708 | /* Normal + sparse files. */ |
f132ab7d | 709 | return mpage_read_folio(folio, ntfs_get_block); |
82cae269 KK |
710 | } |
711 | ||
712 | static void ntfs_readahead(struct readahead_control *rac) | |
713 | { | |
714 | struct address_space *mapping = rac->mapping; | |
715 | struct inode *inode = mapping->host; | |
716 | struct ntfs_inode *ni = ntfs_i(inode); | |
717 | u64 valid; | |
718 | loff_t pos; | |
719 | ||
720 | if (is_resident(ni)) { | |
e8b8e97f | 721 | /* No readahead for resident. */ |
82cae269 KK |
722 | return; |
723 | } | |
724 | ||
725 | if (is_compressed(ni)) { | |
e8b8e97f | 726 | /* No readahead for compressed. */ |
82cae269 KK |
727 | return; |
728 | } | |
729 | ||
730 | valid = ni->i_valid; | |
731 | pos = readahead_pos(rac); | |
732 | ||
733 | if (valid < i_size_read(inode) && pos <= valid && | |
734 | valid < pos + readahead_length(rac)) { | |
e8b8e97f | 735 | /* Range cross 'valid'. Read it page by page. */ |
82cae269 KK |
736 | return; |
737 | } | |
738 | ||
739 | mpage_readahead(rac, ntfs_get_block); | |
740 | } | |
741 | ||
742 | static int ntfs_get_block_direct_IO_R(struct inode *inode, sector_t iblock, | |
743 | struct buffer_head *bh_result, int create) | |
744 | { | |
745 | return ntfs_get_block_vbo(inode, (u64)iblock << inode->i_blkbits, | |
746 | bh_result, create, GET_BLOCK_DIRECT_IO_R); | |
747 | } | |
748 | ||
749 | static int ntfs_get_block_direct_IO_W(struct inode *inode, sector_t iblock, | |
750 | struct buffer_head *bh_result, int create) | |
751 | { | |
752 | return ntfs_get_block_vbo(inode, (u64)iblock << inode->i_blkbits, | |
753 | bh_result, create, GET_BLOCK_DIRECT_IO_W); | |
754 | } | |
755 | ||
756 | static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) | |
757 | { | |
758 | struct file *file = iocb->ki_filp; | |
759 | struct address_space *mapping = file->f_mapping; | |
760 | struct inode *inode = mapping->host; | |
761 | struct ntfs_inode *ni = ntfs_i(inode); | |
762 | loff_t vbo = iocb->ki_pos; | |
763 | loff_t end; | |
764 | int wr = iov_iter_rw(iter) & WRITE; | |
52e00ea6 | 765 | size_t iter_count = iov_iter_count(iter); |
82cae269 KK |
766 | loff_t valid; |
767 | ssize_t ret; | |
768 | ||
769 | if (is_resident(ni)) { | |
e8b8e97f | 770 | /* Switch to buffered write. */ |
82cae269 KK |
771 | ret = 0; |
772 | goto out; | |
773 | } | |
774 | ||
775 | ret = blockdev_direct_IO(iocb, inode, iter, | |
776 | wr ? ntfs_get_block_direct_IO_W | |
777 | : ntfs_get_block_direct_IO_R); | |
778 | ||
52e00ea6 KK |
779 | if (ret > 0) |
780 | end = vbo + ret; | |
781 | else if (wr && ret == -EIOCBQUEUED) | |
782 | end = vbo + iter_count; | |
783 | else | |
82cae269 KK |
784 | goto out; |
785 | ||
82cae269 KK |
786 | valid = ni->i_valid; |
787 | if (wr) { | |
788 | if (end > valid && !S_ISBLK(inode->i_mode)) { | |
789 | ni->i_valid = end; | |
790 | mark_inode_dirty(inode); | |
791 | } | |
792 | } else if (vbo < valid && valid < end) { | |
e8b8e97f | 793 | /* Fix page. */ |
82cae269 KK |
794 | iov_iter_revert(iter, end - valid); |
795 | iov_iter_zero(end - valid, iter); | |
796 | } | |
797 | ||
798 | out: | |
799 | return ret; | |
800 | } | |
801 | ||
802 | int ntfs_set_size(struct inode *inode, u64 new_size) | |
803 | { | |
804 | struct super_block *sb = inode->i_sb; | |
805 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
806 | struct ntfs_inode *ni = ntfs_i(inode); | |
807 | int err; | |
808 | ||
e8b8e97f | 809 | /* Check for maximum file size. */ |
82cae269 KK |
810 | if (is_sparsed(ni) || is_compressed(ni)) { |
811 | if (new_size > sbi->maxbytes_sparse) { | |
812 | err = -EFBIG; | |
813 | goto out; | |
814 | } | |
815 | } else if (new_size > sbi->maxbytes) { | |
816 | err = -EFBIG; | |
817 | goto out; | |
818 | } | |
819 | ||
820 | ni_lock(ni); | |
821 | down_write(&ni->file.run_lock); | |
822 | ||
823 | err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, new_size, | |
824 | &ni->i_valid, true, NULL); | |
825 | ||
826 | up_write(&ni->file.run_lock); | |
827 | ni_unlock(ni); | |
828 | ||
829 | mark_inode_dirty(inode); | |
830 | ||
831 | out: | |
832 | return err; | |
833 | } | |
834 | ||
835 | static int ntfs_writepage(struct page *page, struct writeback_control *wbc) | |
836 | { | |
837 | struct address_space *mapping = page->mapping; | |
838 | struct inode *inode = mapping->host; | |
839 | struct ntfs_inode *ni = ntfs_i(inode); | |
840 | int err; | |
841 | ||
842 | if (is_resident(ni)) { | |
843 | ni_lock(ni); | |
844 | err = attr_data_write_resident(ni, page); | |
845 | ni_unlock(ni); | |
846 | if (err != E_NTFS_NONRESIDENT) { | |
847 | unlock_page(page); | |
848 | return err; | |
849 | } | |
850 | } | |
851 | ||
852 | return block_write_full_page(page, ntfs_get_block, wbc); | |
853 | } | |
854 | ||
855 | static int ntfs_writepages(struct address_space *mapping, | |
856 | struct writeback_control *wbc) | |
857 | { | |
e8b8e97f | 858 | /* Redirect call to 'ntfs_writepage' for resident files. */ |
91397101 CH |
859 | if (is_resident(ntfs_i(mapping->host))) |
860 | return generic_writepages(mapping, wbc); | |
861 | return mpage_writepages(mapping, wbc, ntfs_get_block); | |
82cae269 KK |
862 | } |
863 | ||
864 | static int ntfs_get_block_write_begin(struct inode *inode, sector_t vbn, | |
865 | struct buffer_head *bh_result, int create) | |
866 | { | |
867 | return ntfs_get_block_vbo(inode, (u64)vbn << inode->i_blkbits, | |
868 | bh_result, create, GET_BLOCK_WRITE_BEGIN); | |
869 | } | |
870 | ||
44ab23b9 MWO |
871 | int ntfs_write_begin(struct file *file, struct address_space *mapping, |
872 | loff_t pos, u32 len, struct page **pagep, void **fsdata) | |
82cae269 KK |
873 | { |
874 | int err; | |
875 | struct inode *inode = mapping->host; | |
876 | struct ntfs_inode *ni = ntfs_i(inode); | |
877 | ||
878 | *pagep = NULL; | |
879 | if (is_resident(ni)) { | |
880 | struct page *page = grab_cache_page_write_begin( | |
b7446e7c | 881 | mapping, pos >> PAGE_SHIFT); |
82cae269 KK |
882 | |
883 | if (!page) { | |
884 | err = -ENOMEM; | |
885 | goto out; | |
886 | } | |
887 | ||
888 | ni_lock(ni); | |
889 | err = attr_data_read_resident(ni, page); | |
890 | ni_unlock(ni); | |
891 | ||
892 | if (!err) { | |
893 | *pagep = page; | |
894 | goto out; | |
895 | } | |
896 | unlock_page(page); | |
897 | put_page(page); | |
898 | ||
899 | if (err != E_NTFS_NONRESIDENT) | |
900 | goto out; | |
901 | } | |
902 | ||
b3992d1e | 903 | err = block_write_begin(mapping, pos, len, pagep, |
82cae269 KK |
904 | ntfs_get_block_write_begin); |
905 | ||
906 | out: | |
907 | return err; | |
908 | } | |
909 | ||
e8b8e97f KA |
910 | /* |
911 | * ntfs_write_end - Address_space_operations::write_end. | |
912 | */ | |
44ab23b9 MWO |
913 | int ntfs_write_end(struct file *file, struct address_space *mapping, |
914 | loff_t pos, u32 len, u32 copied, struct page *page, | |
915 | void *fsdata) | |
82cae269 KK |
916 | { |
917 | struct inode *inode = mapping->host; | |
918 | struct ntfs_inode *ni = ntfs_i(inode); | |
919 | u64 valid = ni->i_valid; | |
920 | bool dirty = false; | |
921 | int err; | |
922 | ||
923 | if (is_resident(ni)) { | |
924 | ni_lock(ni); | |
925 | err = attr_data_write_resident(ni, page); | |
926 | ni_unlock(ni); | |
927 | if (!err) { | |
928 | dirty = true; | |
e8b8e97f | 929 | /* Clear any buffers in page. */ |
82cae269 KK |
930 | if (page_has_buffers(page)) { |
931 | struct buffer_head *head, *bh; | |
932 | ||
933 | bh = head = page_buffers(page); | |
934 | do { | |
935 | clear_buffer_dirty(bh); | |
936 | clear_buffer_mapped(bh); | |
937 | set_buffer_uptodate(bh); | |
938 | } while (head != (bh = bh->b_this_page)); | |
939 | } | |
940 | SetPageUptodate(page); | |
941 | err = copied; | |
942 | } | |
943 | unlock_page(page); | |
944 | put_page(page); | |
945 | } else { | |
946 | err = generic_write_end(file, mapping, pos, len, copied, page, | |
947 | fsdata); | |
948 | } | |
949 | ||
950 | if (err >= 0) { | |
951 | if (!(ni->std_fa & FILE_ATTRIBUTE_ARCHIVE)) { | |
952 | inode->i_ctime = inode->i_mtime = current_time(inode); | |
953 | ni->std_fa |= FILE_ATTRIBUTE_ARCHIVE; | |
954 | dirty = true; | |
955 | } | |
956 | ||
957 | if (valid != ni->i_valid) { | |
e8b8e97f | 958 | /* ni->i_valid is changed in ntfs_get_block_vbo. */ |
82cae269 KK |
959 | dirty = true; |
960 | } | |
961 | ||
ad26a9c8 KK |
962 | if (pos + err > inode->i_size) { |
963 | inode->i_size = pos + err; | |
964 | dirty = true; | |
965 | } | |
966 | ||
82cae269 KK |
967 | if (dirty) |
968 | mark_inode_dirty(inode); | |
969 | } | |
970 | ||
971 | return err; | |
972 | } | |
973 | ||
974 | int reset_log_file(struct inode *inode) | |
975 | { | |
976 | int err; | |
977 | loff_t pos = 0; | |
978 | u32 log_size = inode->i_size; | |
979 | struct address_space *mapping = inode->i_mapping; | |
980 | ||
981 | for (;;) { | |
982 | u32 len; | |
983 | void *kaddr; | |
984 | struct page *page; | |
985 | ||
986 | len = pos + PAGE_SIZE > log_size ? (log_size - pos) : PAGE_SIZE; | |
987 | ||
b3992d1e | 988 | err = block_write_begin(mapping, pos, len, &page, |
82cae269 KK |
989 | ntfs_get_block_write_begin); |
990 | if (err) | |
991 | goto out; | |
992 | ||
993 | kaddr = kmap_atomic(page); | |
994 | memset(kaddr, -1, len); | |
995 | kunmap_atomic(kaddr); | |
996 | flush_dcache_page(page); | |
997 | ||
998 | err = block_write_end(NULL, mapping, pos, len, len, page, NULL); | |
999 | if (err < 0) | |
1000 | goto out; | |
1001 | pos += len; | |
1002 | ||
1003 | if (pos >= log_size) | |
1004 | break; | |
1005 | balance_dirty_pages_ratelimited(mapping); | |
1006 | } | |
1007 | out: | |
1008 | mark_inode_dirty_sync(inode); | |
1009 | ||
1010 | return err; | |
1011 | } | |
1012 | ||
1013 | int ntfs3_write_inode(struct inode *inode, struct writeback_control *wbc) | |
1014 | { | |
1015 | return _ni_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL); | |
1016 | } | |
1017 | ||
1018 | int ntfs_sync_inode(struct inode *inode) | |
1019 | { | |
1020 | return _ni_write_inode(inode, 1); | |
1021 | } | |
1022 | ||
1023 | /* | |
e8b8e97f KA |
1024 | * writeback_inode - Helper function for ntfs_flush_inodes(). |
1025 | * | |
1026 | * This writes both the inode and the file data blocks, waiting | |
1027 | * for in flight data blocks before the start of the call. It | |
1028 | * does not wait for any io started during the call. | |
82cae269 KK |
1029 | */ |
1030 | static int writeback_inode(struct inode *inode) | |
1031 | { | |
1032 | int ret = sync_inode_metadata(inode, 0); | |
1033 | ||
1034 | if (!ret) | |
1035 | ret = filemap_fdatawrite(inode->i_mapping); | |
1036 | return ret; | |
1037 | } | |
1038 | ||
1039 | /* | |
e8b8e97f KA |
1040 | * ntfs_flush_inodes |
1041 | * | |
1042 | * Write data and metadata corresponding to i1 and i2. The io is | |
82cae269 KK |
1043 | * started but we do not wait for any of it to finish. |
1044 | * | |
e8b8e97f | 1045 | * filemap_flush() is used for the block device, so if there is a dirty |
82cae269 | 1046 | * page for a block already in flight, we will not wait and start the |
e8b8e97f | 1047 | * io over again. |
82cae269 KK |
1048 | */ |
1049 | int ntfs_flush_inodes(struct super_block *sb, struct inode *i1, | |
1050 | struct inode *i2) | |
1051 | { | |
1052 | int ret = 0; | |
1053 | ||
1054 | if (i1) | |
1055 | ret = writeback_inode(i1); | |
1056 | if (!ret && i2) | |
1057 | ret = writeback_inode(i2); | |
1058 | if (!ret) | |
680e667b | 1059 | ret = sync_blockdev_nowait(sb->s_bdev); |
82cae269 KK |
1060 | return ret; |
1061 | } | |
1062 | ||
1063 | int inode_write_data(struct inode *inode, const void *data, size_t bytes) | |
1064 | { | |
1065 | pgoff_t idx; | |
1066 | ||
e8b8e97f | 1067 | /* Write non resident data. */ |
82cae269 KK |
1068 | for (idx = 0; bytes; idx++) { |
1069 | size_t op = bytes > PAGE_SIZE ? PAGE_SIZE : bytes; | |
1070 | struct page *page = ntfs_map_page(inode->i_mapping, idx); | |
1071 | ||
1072 | if (IS_ERR(page)) | |
1073 | return PTR_ERR(page); | |
1074 | ||
1075 | lock_page(page); | |
1076 | WARN_ON(!PageUptodate(page)); | |
1077 | ClearPageUptodate(page); | |
1078 | ||
1079 | memcpy(page_address(page), data, op); | |
1080 | ||
1081 | flush_dcache_page(page); | |
1082 | SetPageUptodate(page); | |
1083 | unlock_page(page); | |
1084 | ||
1085 | ntfs_unmap_page(page); | |
1086 | ||
1087 | bytes -= op; | |
1088 | data = Add2Ptr(data, PAGE_SIZE); | |
1089 | } | |
1090 | return 0; | |
1091 | } | |
1092 | ||
1093 | /* | |
e8b8e97f KA |
1094 | * ntfs_reparse_bytes |
1095 | * | |
d3624466 | 1096 | * Number of bytes for REPARSE_DATA_BUFFER(IO_REPARSE_TAG_SYMLINK) |
e8b8e97f | 1097 | * for unicode string of @uni_len length. |
82cae269 KK |
1098 | */ |
1099 | static inline u32 ntfs_reparse_bytes(u32 uni_len) | |
1100 | { | |
e8b8e97f | 1101 | /* Header + unicode string + decorated unicode string. */ |
82cae269 KK |
1102 | return sizeof(short) * (2 * uni_len + 4) + |
1103 | offsetof(struct REPARSE_DATA_BUFFER, | |
1104 | SymbolicLinkReparseBuffer.PathBuffer); | |
1105 | } | |
1106 | ||
1107 | static struct REPARSE_DATA_BUFFER * | |
1108 | ntfs_create_reparse_buffer(struct ntfs_sb_info *sbi, const char *symname, | |
1109 | u32 size, u16 *nsize) | |
1110 | { | |
1111 | int i, err; | |
1112 | struct REPARSE_DATA_BUFFER *rp; | |
1113 | __le16 *rp_name; | |
1114 | typeof(rp->SymbolicLinkReparseBuffer) *rs; | |
1115 | ||
195c52bd | 1116 | rp = kzalloc(ntfs_reparse_bytes(2 * size + 2), GFP_NOFS); |
82cae269 KK |
1117 | if (!rp) |
1118 | return ERR_PTR(-ENOMEM); | |
1119 | ||
1120 | rs = &rp->SymbolicLinkReparseBuffer; | |
1121 | rp_name = rs->PathBuffer; | |
1122 | ||
e8b8e97f | 1123 | /* Convert link name to UTF-16. */ |
82cae269 KK |
1124 | err = ntfs_nls_to_utf16(sbi, symname, size, |
1125 | (struct cpu_str *)(rp_name - 1), 2 * size, | |
1126 | UTF16_LITTLE_ENDIAN); | |
1127 | if (err < 0) | |
1128 | goto out; | |
1129 | ||
e8b8e97f | 1130 | /* err = the length of unicode name of symlink. */ |
82cae269 KK |
1131 | *nsize = ntfs_reparse_bytes(err); |
1132 | ||
1133 | if (*nsize > sbi->reparse.max_size) { | |
1134 | err = -EFBIG; | |
1135 | goto out; | |
1136 | } | |
1137 | ||
e8b8e97f | 1138 | /* Translate Linux '/' into Windows '\'. */ |
82cae269 KK |
1139 | for (i = 0; i < err; i++) { |
1140 | if (rp_name[i] == cpu_to_le16('/')) | |
1141 | rp_name[i] = cpu_to_le16('\\'); | |
1142 | } | |
1143 | ||
1144 | rp->ReparseTag = IO_REPARSE_TAG_SYMLINK; | |
1145 | rp->ReparseDataLength = | |
1146 | cpu_to_le16(*nsize - offsetof(struct REPARSE_DATA_BUFFER, | |
1147 | SymbolicLinkReparseBuffer)); | |
1148 | ||
e8b8e97f | 1149 | /* PrintName + SubstituteName. */ |
82cae269 KK |
1150 | rs->SubstituteNameOffset = cpu_to_le16(sizeof(short) * err); |
1151 | rs->SubstituteNameLength = cpu_to_le16(sizeof(short) * err + 8); | |
1152 | rs->PrintNameLength = rs->SubstituteNameOffset; | |
1153 | ||
1154 | /* | |
e8b8e97f KA |
1155 | * TODO: Use relative path if possible to allow Windows to |
1156 | * parse this path. | |
1157 | * 0-absolute path 1- relative path (SYMLINK_FLAG_RELATIVE). | |
82cae269 KK |
1158 | */ |
1159 | rs->Flags = 0; | |
1160 | ||
1161 | memmove(rp_name + err + 4, rp_name, sizeof(short) * err); | |
1162 | ||
e8b8e97f | 1163 | /* Decorate SubstituteName. */ |
82cae269 KK |
1164 | rp_name += err; |
1165 | rp_name[0] = cpu_to_le16('\\'); | |
1166 | rp_name[1] = cpu_to_le16('?'); | |
1167 | rp_name[2] = cpu_to_le16('?'); | |
1168 | rp_name[3] = cpu_to_le16('\\'); | |
1169 | ||
1170 | return rp; | |
1171 | out: | |
195c52bd | 1172 | kfree(rp); |
82cae269 KK |
1173 | return ERR_PTR(err); |
1174 | } | |
1175 | ||
2b108260 KK |
1176 | /* |
1177 | * ntfs_create_inode | |
1178 | * | |
1179 | * Helper function for: | |
1180 | * - ntfs_create | |
1181 | * - ntfs_mknod | |
1182 | * - ntfs_symlink | |
1183 | * - ntfs_mkdir | |
1184 | * - ntfs_atomic_open | |
1185 | * | |
1186 | * NOTE: if fnd != NULL (ntfs_atomic_open) then @dir is locked | |
1187 | */ | |
82cae269 KK |
1188 | struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, |
1189 | struct inode *dir, struct dentry *dentry, | |
1190 | const struct cpu_str *uni, umode_t mode, | |
1191 | dev_t dev, const char *symname, u32 size, | |
1192 | struct ntfs_fnd *fnd) | |
1193 | { | |
1194 | int err; | |
1195 | struct super_block *sb = dir->i_sb; | |
1196 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
1197 | const struct qstr *name = &dentry->d_name; | |
1198 | CLST ino = 0; | |
1199 | struct ntfs_inode *dir_ni = ntfs_i(dir); | |
1200 | struct ntfs_inode *ni = NULL; | |
1201 | struct inode *inode = NULL; | |
1202 | struct ATTRIB *attr; | |
1203 | struct ATTR_STD_INFO5 *std5; | |
1204 | struct ATTR_FILE_NAME *fname; | |
1205 | struct MFT_REC *rec; | |
1206 | u32 asize, dsize, sd_size; | |
1207 | enum FILE_ATTRIBUTE fa; | |
1208 | __le32 security_id = SECURITY_ID_INVALID; | |
1209 | CLST vcn; | |
1210 | const void *sd; | |
1211 | u16 t16, nsize = 0, aid = 0; | |
1212 | struct INDEX_ROOT *root, *dir_root; | |
1213 | struct NTFS_DE *e, *new_de = NULL; | |
1214 | struct REPARSE_DATA_BUFFER *rp = NULL; | |
1215 | bool rp_inserted = false; | |
1216 | ||
2b108260 KK |
1217 | if (!fnd) |
1218 | ni_lock_dir(dir_ni); | |
d562e901 | 1219 | |
82cae269 | 1220 | dir_root = indx_get_root(&dir_ni->dir, dir_ni, NULL, NULL); |
d562e901 KK |
1221 | if (!dir_root) { |
1222 | err = -EINVAL; | |
1223 | goto out1; | |
1224 | } | |
82cae269 KK |
1225 | |
1226 | if (S_ISDIR(mode)) { | |
d3624466 | 1227 | /* Use parent's directory attributes. */ |
82cae269 KK |
1228 | fa = dir_ni->std_fa | FILE_ATTRIBUTE_DIRECTORY | |
1229 | FILE_ATTRIBUTE_ARCHIVE; | |
1230 | /* | |
d3624466 KK |
1231 | * By default child directory inherits parent attributes. |
1232 | * Root directory is hidden + system. | |
1233 | * Make an exception for children in root. | |
82cae269 KK |
1234 | */ |
1235 | if (dir->i_ino == MFT_REC_ROOT) | |
1236 | fa &= ~(FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM); | |
1237 | } else if (S_ISLNK(mode)) { | |
1238 | /* It is good idea that link should be the same type (file/dir) as target */ | |
1239 | fa = FILE_ATTRIBUTE_REPARSE_POINT; | |
1240 | ||
1241 | /* | |
d3624466 KK |
1242 | * Linux: there are dir/file/symlink and so on. |
1243 | * NTFS: symlinks are "dir + reparse" or "file + reparse" | |
82cae269 KK |
1244 | * It is good idea to create: |
1245 | * dir + reparse if 'symname' points to directory | |
1246 | * or | |
1247 | * file + reparse if 'symname' points to file | |
e8b8e97f | 1248 | * Unfortunately kern_path hangs if symname contains 'dir'. |
82cae269 KK |
1249 | */ |
1250 | ||
1251 | /* | |
1252 | * struct path path; | |
1253 | * | |
1254 | * if (!kern_path(symname, LOOKUP_FOLLOW, &path)){ | |
1255 | * struct inode *target = d_inode(path.dentry); | |
1256 | * | |
1257 | * if (S_ISDIR(target->i_mode)) | |
1258 | * fa |= FILE_ATTRIBUTE_DIRECTORY; | |
1259 | * // if ( target->i_sb == sb ){ | |
1260 | * // use relative path? | |
1261 | * // } | |
1262 | * path_put(&path); | |
1263 | * } | |
1264 | */ | |
1265 | } else if (S_ISREG(mode)) { | |
564c97bd | 1266 | if (sbi->options->sparse) { |
e8b8e97f | 1267 | /* Sparsed regular file, cause option 'sparse'. */ |
82cae269 KK |
1268 | fa = FILE_ATTRIBUTE_SPARSE_FILE | |
1269 | FILE_ATTRIBUTE_ARCHIVE; | |
1270 | } else if (dir_ni->std_fa & FILE_ATTRIBUTE_COMPRESSED) { | |
e8b8e97f | 1271 | /* Compressed regular file, if parent is compressed. */ |
82cae269 KK |
1272 | fa = FILE_ATTRIBUTE_COMPRESSED | FILE_ATTRIBUTE_ARCHIVE; |
1273 | } else { | |
e8b8e97f | 1274 | /* Regular file, default attributes. */ |
82cae269 KK |
1275 | fa = FILE_ATTRIBUTE_ARCHIVE; |
1276 | } | |
1277 | } else { | |
1278 | fa = FILE_ATTRIBUTE_ARCHIVE; | |
1279 | } | |
1280 | ||
dc0fcc99 | 1281 | /* If option "hide_dot_files" then set hidden attribute for dot files. */ |
098250db KK |
1282 | if (sbi->options->hide_dot_files && name->name[0] == '.') |
1283 | fa |= FILE_ATTRIBUTE_HIDDEN; | |
1284 | ||
82cae269 KK |
1285 | if (!(mode & 0222)) |
1286 | fa |= FILE_ATTRIBUTE_READONLY; | |
1287 | ||
e8b8e97f | 1288 | /* Allocate PATH_MAX bytes. */ |
82cae269 KK |
1289 | new_de = __getname(); |
1290 | if (!new_de) { | |
1291 | err = -ENOMEM; | |
1292 | goto out1; | |
1293 | } | |
1294 | ||
e8b8e97f | 1295 | /* Mark rw ntfs as dirty. it will be cleared at umount. */ |
82cae269 KK |
1296 | ntfs_set_state(sbi, NTFS_DIRTY_DIRTY); |
1297 | ||
e8b8e97f | 1298 | /* Step 1: allocate and fill new mft record. */ |
82cae269 KK |
1299 | err = ntfs_look_free_mft(sbi, &ino, false, NULL, NULL); |
1300 | if (err) | |
1301 | goto out2; | |
1302 | ||
1303 | ni = ntfs_new_inode(sbi, ino, fa & FILE_ATTRIBUTE_DIRECTORY); | |
1304 | if (IS_ERR(ni)) { | |
1305 | err = PTR_ERR(ni); | |
1306 | ni = NULL; | |
1307 | goto out3; | |
1308 | } | |
1309 | inode = &ni->vfs_inode; | |
1310 | inode_init_owner(mnt_userns, inode, dir, mode); | |
78ab59fe | 1311 | mode = inode->i_mode; |
82cae269 KK |
1312 | |
1313 | inode->i_atime = inode->i_mtime = inode->i_ctime = ni->i_crtime = | |
1314 | current_time(inode); | |
1315 | ||
1316 | rec = ni->mi.mrec; | |
1317 | rec->hard_links = cpu_to_le16(1); | |
1318 | attr = Add2Ptr(rec, le16_to_cpu(rec->attr_off)); | |
1319 | ||
e8b8e97f | 1320 | /* Get default security id. */ |
82cae269 KK |
1321 | sd = s_default_security; |
1322 | sd_size = sizeof(s_default_security); | |
1323 | ||
1324 | if (is_ntfs3(sbi)) { | |
1325 | security_id = dir_ni->std_security_id; | |
1326 | if (le32_to_cpu(security_id) < SECURITY_ID_FIRST) { | |
1327 | security_id = sbi->security.def_security_id; | |
1328 | ||
1329 | if (security_id == SECURITY_ID_INVALID && | |
1330 | !ntfs_insert_security(sbi, sd, sd_size, | |
1331 | &security_id, NULL)) | |
1332 | sbi->security.def_security_id = security_id; | |
1333 | } | |
1334 | } | |
1335 | ||
e8b8e97f | 1336 | /* Insert standard info. */ |
82cae269 KK |
1337 | std5 = Add2Ptr(attr, SIZEOF_RESIDENT); |
1338 | ||
1339 | if (security_id == SECURITY_ID_INVALID) { | |
1340 | dsize = sizeof(struct ATTR_STD_INFO); | |
1341 | } else { | |
1342 | dsize = sizeof(struct ATTR_STD_INFO5); | |
1343 | std5->security_id = security_id; | |
1344 | ni->std_security_id = security_id; | |
1345 | } | |
1346 | asize = SIZEOF_RESIDENT + dsize; | |
1347 | ||
1348 | attr->type = ATTR_STD; | |
1349 | attr->size = cpu_to_le32(asize); | |
1350 | attr->id = cpu_to_le16(aid++); | |
1351 | attr->res.data_off = SIZEOF_RESIDENT_LE; | |
1352 | attr->res.data_size = cpu_to_le32(dsize); | |
1353 | ||
1354 | std5->cr_time = std5->m_time = std5->c_time = std5->a_time = | |
1355 | kernel2nt(&inode->i_atime); | |
1356 | ||
1357 | ni->std_fa = fa; | |
1358 | std5->fa = fa; | |
1359 | ||
1360 | attr = Add2Ptr(attr, asize); | |
1361 | ||
e8b8e97f | 1362 | /* Insert file name. */ |
82cae269 KK |
1363 | err = fill_name_de(sbi, new_de, name, uni); |
1364 | if (err) | |
1365 | goto out4; | |
1366 | ||
1367 | mi_get_ref(&ni->mi, &new_de->ref); | |
1368 | ||
1369 | fname = (struct ATTR_FILE_NAME *)(new_de + 1); | |
1d07a9df DP |
1370 | |
1371 | if (sbi->options->windows_names && | |
1372 | !valid_windows_name(sbi, (struct le_str *)&fname->name_len)) { | |
1373 | err = -EINVAL; | |
1374 | goto out4; | |
1375 | } | |
1376 | ||
82cae269 KK |
1377 | mi_get_ref(&dir_ni->mi, &fname->home); |
1378 | fname->dup.cr_time = fname->dup.m_time = fname->dup.c_time = | |
1379 | fname->dup.a_time = std5->cr_time; | |
1380 | fname->dup.alloc_size = fname->dup.data_size = 0; | |
1381 | fname->dup.fa = std5->fa; | |
1382 | fname->dup.ea_size = fname->dup.reparse = 0; | |
1383 | ||
1384 | dsize = le16_to_cpu(new_de->key_size); | |
fa3cacf5 | 1385 | asize = ALIGN(SIZEOF_RESIDENT + dsize, 8); |
82cae269 KK |
1386 | |
1387 | attr->type = ATTR_NAME; | |
1388 | attr->size = cpu_to_le32(asize); | |
1389 | attr->res.data_off = SIZEOF_RESIDENT_LE; | |
1390 | attr->res.flags = RESIDENT_FLAG_INDEXED; | |
1391 | attr->id = cpu_to_le16(aid++); | |
1392 | attr->res.data_size = cpu_to_le32(dsize); | |
1393 | memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), fname, dsize); | |
1394 | ||
1395 | attr = Add2Ptr(attr, asize); | |
1396 | ||
1397 | if (security_id == SECURITY_ID_INVALID) { | |
e8b8e97f | 1398 | /* Insert security attribute. */ |
fa3cacf5 | 1399 | asize = SIZEOF_RESIDENT + ALIGN(sd_size, 8); |
82cae269 KK |
1400 | |
1401 | attr->type = ATTR_SECURE; | |
1402 | attr->size = cpu_to_le32(asize); | |
1403 | attr->id = cpu_to_le16(aid++); | |
1404 | attr->res.data_off = SIZEOF_RESIDENT_LE; | |
1405 | attr->res.data_size = cpu_to_le32(sd_size); | |
1406 | memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), sd, sd_size); | |
1407 | ||
1408 | attr = Add2Ptr(attr, asize); | |
1409 | } | |
1410 | ||
78ab59fe | 1411 | attr->id = cpu_to_le16(aid++); |
82cae269 KK |
1412 | if (fa & FILE_ATTRIBUTE_DIRECTORY) { |
1413 | /* | |
e8b8e97f KA |
1414 | * Regular directory or symlink to directory. |
1415 | * Create root attribute. | |
82cae269 KK |
1416 | */ |
1417 | dsize = sizeof(struct INDEX_ROOT) + sizeof(struct NTFS_DE); | |
1418 | asize = sizeof(I30_NAME) + SIZEOF_RESIDENT + dsize; | |
1419 | ||
1420 | attr->type = ATTR_ROOT; | |
1421 | attr->size = cpu_to_le32(asize); | |
82cae269 KK |
1422 | |
1423 | attr->name_len = ARRAY_SIZE(I30_NAME); | |
1424 | attr->name_off = SIZEOF_RESIDENT_LE; | |
1425 | attr->res.data_off = | |
1426 | cpu_to_le16(sizeof(I30_NAME) + SIZEOF_RESIDENT); | |
1427 | attr->res.data_size = cpu_to_le32(dsize); | |
1428 | memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), I30_NAME, | |
1429 | sizeof(I30_NAME)); | |
1430 | ||
1431 | root = Add2Ptr(attr, sizeof(I30_NAME) + SIZEOF_RESIDENT); | |
1432 | memcpy(root, dir_root, offsetof(struct INDEX_ROOT, ihdr)); | |
1433 | root->ihdr.de_off = | |
1434 | cpu_to_le32(sizeof(struct INDEX_HDR)); // 0x10 | |
1435 | root->ihdr.used = cpu_to_le32(sizeof(struct INDEX_HDR) + | |
1436 | sizeof(struct NTFS_DE)); | |
1437 | root->ihdr.total = root->ihdr.used; | |
1438 | ||
1439 | e = Add2Ptr(root, sizeof(struct INDEX_ROOT)); | |
1440 | e->size = cpu_to_le16(sizeof(struct NTFS_DE)); | |
1441 | e->flags = NTFS_IE_LAST; | |
1442 | } else if (S_ISLNK(mode)) { | |
1443 | /* | |
e8b8e97f KA |
1444 | * Symlink to file. |
1445 | * Create empty resident data attribute. | |
82cae269 KK |
1446 | */ |
1447 | asize = SIZEOF_RESIDENT; | |
1448 | ||
e8b8e97f | 1449 | /* Insert empty ATTR_DATA */ |
82cae269 KK |
1450 | attr->type = ATTR_DATA; |
1451 | attr->size = cpu_to_le32(SIZEOF_RESIDENT); | |
82cae269 KK |
1452 | attr->name_off = SIZEOF_RESIDENT_LE; |
1453 | attr->res.data_off = SIZEOF_RESIDENT_LE; | |
78ab59fe | 1454 | } else if (S_ISREG(mode)) { |
82cae269 | 1455 | /* |
78ab59fe | 1456 | * Regular file. Create empty non resident data attribute. |
82cae269 KK |
1457 | */ |
1458 | attr->type = ATTR_DATA; | |
78ab59fe KK |
1459 | attr->non_res = 1; |
1460 | attr->nres.evcn = cpu_to_le64(-1ll); | |
1461 | if (fa & FILE_ATTRIBUTE_SPARSE_FILE) { | |
1462 | attr->size = cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8); | |
1463 | attr->name_off = SIZEOF_NONRESIDENT_EX_LE; | |
1464 | attr->flags = ATTR_FLAG_SPARSED; | |
1465 | asize = SIZEOF_NONRESIDENT_EX + 8; | |
1466 | } else if (fa & FILE_ATTRIBUTE_COMPRESSED) { | |
1467 | attr->size = cpu_to_le32(SIZEOF_NONRESIDENT_EX + 8); | |
1468 | attr->name_off = SIZEOF_NONRESIDENT_EX_LE; | |
1469 | attr->flags = ATTR_FLAG_COMPRESSED; | |
1470 | attr->nres.c_unit = COMPRESSION_UNIT; | |
1471 | asize = SIZEOF_NONRESIDENT_EX + 8; | |
82cae269 | 1472 | } else { |
78ab59fe KK |
1473 | attr->size = cpu_to_le32(SIZEOF_NONRESIDENT + 8); |
1474 | attr->name_off = SIZEOF_NONRESIDENT_LE; | |
1475 | asize = SIZEOF_NONRESIDENT + 8; | |
82cae269 | 1476 | } |
78ab59fe KK |
1477 | attr->nres.run_off = attr->name_off; |
1478 | } else { | |
1479 | /* | |
1480 | * Node. Create empty resident data attribute. | |
1481 | */ | |
1482 | attr->type = ATTR_DATA; | |
1483 | attr->size = cpu_to_le32(SIZEOF_RESIDENT); | |
1484 | attr->name_off = SIZEOF_RESIDENT_LE; | |
1485 | if (fa & FILE_ATTRIBUTE_SPARSE_FILE) | |
1486 | attr->flags = ATTR_FLAG_SPARSED; | |
1487 | else if (fa & FILE_ATTRIBUTE_COMPRESSED) | |
1488 | attr->flags = ATTR_FLAG_COMPRESSED; | |
1489 | attr->res.data_off = SIZEOF_RESIDENT_LE; | |
1490 | asize = SIZEOF_RESIDENT; | |
1491 | ni->ni_flags |= NI_FLAG_RESIDENT; | |
82cae269 KK |
1492 | } |
1493 | ||
1494 | if (S_ISDIR(mode)) { | |
1495 | ni->ni_flags |= NI_FLAG_DIR; | |
1496 | err = indx_init(&ni->dir, sbi, attr, INDEX_MUTEX_I30); | |
1497 | if (err) | |
1498 | goto out4; | |
1499 | } else if (S_ISLNK(mode)) { | |
1500 | rp = ntfs_create_reparse_buffer(sbi, symname, size, &nsize); | |
1501 | ||
1502 | if (IS_ERR(rp)) { | |
1503 | err = PTR_ERR(rp); | |
1504 | rp = NULL; | |
1505 | goto out4; | |
1506 | } | |
1507 | ||
1508 | /* | |
e8b8e97f | 1509 | * Insert ATTR_REPARSE. |
82cae269 KK |
1510 | */ |
1511 | attr = Add2Ptr(attr, asize); | |
1512 | attr->type = ATTR_REPARSE; | |
1513 | attr->id = cpu_to_le16(aid++); | |
1514 | ||
e8b8e97f | 1515 | /* Resident or non resident? */ |
fa3cacf5 | 1516 | asize = ALIGN(SIZEOF_RESIDENT + nsize, 8); |
82cae269 KK |
1517 | t16 = PtrOffset(rec, attr); |
1518 | ||
14a98119 KK |
1519 | /* |
1520 | * Below function 'ntfs_save_wsl_perm' requires 0x78 bytes. | |
1521 | * It is good idea to keep extened attributes resident. | |
1522 | */ | |
78ab59fe | 1523 | if (asize + t16 + 0x78 + 8 > sbi->record_size) { |
82cae269 KK |
1524 | CLST alen; |
1525 | CLST clst = bytes_to_cluster(sbi, nsize); | |
1526 | ||
e8b8e97f | 1527 | /* Bytes per runs. */ |
82cae269 KK |
1528 | t16 = sbi->record_size - t16 - SIZEOF_NONRESIDENT; |
1529 | ||
1530 | attr->non_res = 1; | |
1531 | attr->nres.evcn = cpu_to_le64(clst - 1); | |
1532 | attr->name_off = SIZEOF_NONRESIDENT_LE; | |
1533 | attr->nres.run_off = attr->name_off; | |
1534 | attr->nres.data_size = cpu_to_le64(nsize); | |
1535 | attr->nres.valid_size = attr->nres.data_size; | |
1536 | attr->nres.alloc_size = | |
1537 | cpu_to_le64(ntfs_up_cluster(sbi, nsize)); | |
1538 | ||
1539 | err = attr_allocate_clusters(sbi, &ni->file.run, 0, 0, | |
c380b52f KK |
1540 | clst, NULL, ALLOCATE_DEF, |
1541 | &alen, 0, NULL, NULL); | |
82cae269 KK |
1542 | if (err) |
1543 | goto out5; | |
1544 | ||
1545 | err = run_pack(&ni->file.run, 0, clst, | |
1546 | Add2Ptr(attr, SIZEOF_NONRESIDENT), t16, | |
1547 | &vcn); | |
1548 | if (err < 0) | |
1549 | goto out5; | |
1550 | ||
1551 | if (vcn != clst) { | |
1552 | err = -EINVAL; | |
1553 | goto out5; | |
1554 | } | |
1555 | ||
fa3cacf5 | 1556 | asize = SIZEOF_NONRESIDENT + ALIGN(err, 8); |
82cae269 KK |
1557 | } else { |
1558 | attr->res.data_off = SIZEOF_RESIDENT_LE; | |
1559 | attr->res.data_size = cpu_to_le32(nsize); | |
1560 | memcpy(Add2Ptr(attr, SIZEOF_RESIDENT), rp, nsize); | |
82cae269 KK |
1561 | nsize = 0; |
1562 | } | |
14a98119 KK |
1563 | /* Size of symlink equals the length of input string. */ |
1564 | inode->i_size = size; | |
82cae269 KK |
1565 | |
1566 | attr->size = cpu_to_le32(asize); | |
1567 | ||
1568 | err = ntfs_insert_reparse(sbi, IO_REPARSE_TAG_SYMLINK, | |
1569 | &new_de->ref); | |
1570 | if (err) | |
1571 | goto out5; | |
1572 | ||
1573 | rp_inserted = true; | |
1574 | } | |
1575 | ||
1576 | attr = Add2Ptr(attr, asize); | |
1577 | attr->type = ATTR_END; | |
1578 | ||
1579 | rec->used = cpu_to_le32(PtrOffset(rec, attr) + 8); | |
1580 | rec->next_attr_id = cpu_to_le16(aid); | |
1581 | ||
e8b8e97f | 1582 | /* Step 2: Add new name in index. */ |
78ab59fe | 1583 | err = indx_insert_entry(&dir_ni->dir, dir_ni, new_de, sbi, fnd, 0); |
82cae269 KK |
1584 | if (err) |
1585 | goto out6; | |
1586 | ||
d562e901 | 1587 | /* Unlock parent directory before ntfs_init_acl. */ |
2b108260 KK |
1588 | if (!fnd) |
1589 | ni_unlock(dir_ni); | |
d562e901 | 1590 | |
82cae269 KK |
1591 | inode->i_generation = le16_to_cpu(rec->seq); |
1592 | ||
1593 | dir->i_mtime = dir->i_ctime = inode->i_atime; | |
1594 | ||
1595 | if (S_ISDIR(mode)) { | |
82cae269 KK |
1596 | inode->i_op = &ntfs_dir_inode_operations; |
1597 | inode->i_fop = &ntfs_dir_operations; | |
1598 | } else if (S_ISLNK(mode)) { | |
1599 | inode->i_op = &ntfs_link_inode_operations; | |
1600 | inode->i_fop = NULL; | |
1601 | inode->i_mapping->a_ops = &ntfs_aops; | |
14a98119 KK |
1602 | inode->i_size = size; |
1603 | inode_nohighmem(inode); | |
82cae269 KK |
1604 | } else if (S_ISREG(mode)) { |
1605 | inode->i_op = &ntfs_file_inode_operations; | |
1606 | inode->i_fop = &ntfs_file_operations; | |
1607 | inode->i_mapping->a_ops = | |
1608 | is_compressed(ni) ? &ntfs_aops_cmpr : &ntfs_aops; | |
1609 | init_rwsem(&ni->file.run_lock); | |
1610 | } else { | |
1611 | inode->i_op = &ntfs_special_inode_operations; | |
1612 | init_special_inode(inode, mode, dev); | |
1613 | } | |
1614 | ||
1615 | #ifdef CONFIG_NTFS3_FS_POSIX_ACL | |
1616 | if (!S_ISLNK(mode) && (sb->s_flags & SB_POSIXACL)) { | |
1617 | err = ntfs_init_acl(mnt_userns, inode, dir); | |
1618 | if (err) | |
6c1ee4d3 | 1619 | goto out7; |
82cae269 KK |
1620 | } else |
1621 | #endif | |
1622 | { | |
1623 | inode->i_flags |= S_NOSEC; | |
1624 | } | |
1625 | ||
e8b8e97f | 1626 | /* Write non resident data. */ |
82cae269 | 1627 | if (nsize) { |
63544672 | 1628 | err = ntfs_sb_write_run(sbi, &ni->file.run, 0, rp, nsize, 0); |
82cae269 KK |
1629 | if (err) |
1630 | goto out7; | |
1631 | } | |
1632 | ||
e8b8e97f KA |
1633 | /* |
1634 | * Call 'd_instantiate' after inode->i_op is set | |
1635 | * but before finish_open. | |
1636 | */ | |
82cae269 KK |
1637 | d_instantiate(dentry, inode); |
1638 | ||
1639 | ntfs_save_wsl_perm(inode); | |
82cae269 | 1640 | mark_inode_dirty(dir); |
78ab59fe | 1641 | mark_inode_dirty(inode); |
82cae269 | 1642 | |
e8b8e97f | 1643 | /* Normal exit. */ |
82cae269 KK |
1644 | goto out2; |
1645 | ||
1646 | out7: | |
1647 | ||
e8b8e97f | 1648 | /* Undo 'indx_insert_entry'. */ |
2b108260 KK |
1649 | if (!fnd) |
1650 | ni_lock_dir(dir_ni); | |
82cae269 KK |
1651 | indx_delete_entry(&dir_ni->dir, dir_ni, new_de + 1, |
1652 | le16_to_cpu(new_de->key_size), sbi); | |
d562e901 | 1653 | /* ni_unlock(dir_ni); will be called later. */ |
82cae269 KK |
1654 | out6: |
1655 | if (rp_inserted) | |
1656 | ntfs_remove_reparse(sbi, IO_REPARSE_TAG_SYMLINK, &new_de->ref); | |
1657 | ||
1658 | out5: | |
0e8235d2 KK |
1659 | if (!S_ISDIR(mode)) |
1660 | run_deallocate(sbi, &ni->file.run, false); | |
82cae269 KK |
1661 | |
1662 | out4: | |
1663 | clear_rec_inuse(rec); | |
1664 | clear_nlink(inode); | |
1665 | ni->mi.dirty = false; | |
1666 | discard_new_inode(inode); | |
1667 | out3: | |
071100ea | 1668 | ntfs_mark_rec_free(sbi, ino, false); |
82cae269 KK |
1669 | |
1670 | out2: | |
1671 | __putname(new_de); | |
195c52bd | 1672 | kfree(rp); |
82cae269 KK |
1673 | |
1674 | out1: | |
d562e901 | 1675 | if (err) { |
2b108260 KK |
1676 | if (!fnd) |
1677 | ni_unlock(dir_ni); | |
82cae269 | 1678 | return ERR_PTR(err); |
d562e901 | 1679 | } |
82cae269 KK |
1680 | |
1681 | unlock_new_inode(inode); | |
1682 | ||
1683 | return inode; | |
1684 | } | |
1685 | ||
1686 | int ntfs_link_inode(struct inode *inode, struct dentry *dentry) | |
1687 | { | |
1688 | int err; | |
82cae269 | 1689 | struct ntfs_inode *ni = ntfs_i(inode); |
78ab59fe KK |
1690 | struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; |
1691 | struct NTFS_DE *de; | |
82cae269 | 1692 | |
e8b8e97f | 1693 | /* Allocate PATH_MAX bytes. */ |
78ab59fe KK |
1694 | de = __getname(); |
1695 | if (!de) | |
82cae269 KK |
1696 | return -ENOMEM; |
1697 | ||
78ab59fe KK |
1698 | /* Mark rw ntfs as dirty. It will be cleared at umount. */ |
1699 | ntfs_set_state(sbi, NTFS_DIRTY_DIRTY); | |
82cae269 | 1700 | |
78ab59fe KK |
1701 | /* Construct 'de'. */ |
1702 | err = fill_name_de(sbi, de, &dentry->d_name, NULL); | |
82cae269 KK |
1703 | if (err) |
1704 | goto out; | |
1705 | ||
78ab59fe | 1706 | err = ni_add_name(ntfs_i(d_inode(dentry->d_parent)), ni, de); |
82cae269 | 1707 | out: |
78ab59fe | 1708 | __putname(de); |
82cae269 KK |
1709 | return err; |
1710 | } | |
1711 | ||
1712 | /* | |
1713 | * ntfs_unlink_inode | |
1714 | * | |
1715 | * inode_operations::unlink | |
1716 | * inode_operations::rmdir | |
1717 | */ | |
1718 | int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry) | |
1719 | { | |
1720 | int err; | |
78ab59fe | 1721 | struct ntfs_sb_info *sbi = dir->i_sb->s_fs_info; |
82cae269 KK |
1722 | struct inode *inode = d_inode(dentry); |
1723 | struct ntfs_inode *ni = ntfs_i(inode); | |
82cae269 | 1724 | struct ntfs_inode *dir_ni = ntfs_i(dir); |
78ab59fe KK |
1725 | struct NTFS_DE *de, *de2 = NULL; |
1726 | int undo_remove; | |
82cae269 | 1727 | |
78ab59fe | 1728 | if (ntfs_is_meta_file(sbi, ni->mi.rno)) |
82cae269 KK |
1729 | return -EINVAL; |
1730 | ||
78ab59fe KK |
1731 | /* Allocate PATH_MAX bytes. */ |
1732 | de = __getname(); | |
1733 | if (!de) | |
1734 | return -ENOMEM; | |
1735 | ||
82cae269 KK |
1736 | ni_lock(ni); |
1737 | ||
78ab59fe | 1738 | if (S_ISDIR(inode->i_mode) && !dir_is_empty(inode)) { |
82cae269 | 1739 | err = -ENOTEMPTY; |
78ab59fe | 1740 | goto out; |
82cae269 KK |
1741 | } |
1742 | ||
78ab59fe | 1743 | err = fill_name_de(sbi, de, &dentry->d_name, NULL); |
82cae269 | 1744 | if (err < 0) |
78ab59fe | 1745 | goto out; |
82cae269 | 1746 | |
78ab59fe KK |
1747 | undo_remove = 0; |
1748 | err = ni_remove_name(dir_ni, ni, de, &de2, &undo_remove); | |
82cae269 | 1749 | |
78ab59fe | 1750 | if (!err) { |
82cae269 | 1751 | drop_nlink(inode); |
78ab59fe KK |
1752 | dir->i_mtime = dir->i_ctime = current_time(dir); |
1753 | mark_inode_dirty(dir); | |
1754 | inode->i_ctime = dir->i_ctime; | |
1755 | if (inode->i_nlink) | |
1756 | mark_inode_dirty(inode); | |
1757 | } else if (!ni_remove_name_undo(dir_ni, ni, de, de2, undo_remove)) { | |
c12df45e | 1758 | _ntfs_bad_inode(inode); |
78ab59fe KK |
1759 | } else { |
1760 | if (ni_is_dirty(dir)) | |
1761 | mark_inode_dirty(dir); | |
1762 | if (ni_is_dirty(inode)) | |
1763 | mark_inode_dirty(inode); | |
82cae269 KK |
1764 | } |
1765 | ||
78ab59fe | 1766 | out: |
82cae269 | 1767 | ni_unlock(ni); |
78ab59fe | 1768 | __putname(de); |
82cae269 KK |
1769 | return err; |
1770 | } | |
1771 | ||
1772 | void ntfs_evict_inode(struct inode *inode) | |
1773 | { | |
1774 | truncate_inode_pages_final(&inode->i_data); | |
1775 | ||
1776 | if (inode->i_nlink) | |
1777 | _ni_write_inode(inode, inode_needs_sync(inode)); | |
1778 | ||
1779 | invalidate_inode_buffers(inode); | |
1780 | clear_inode(inode); | |
1781 | ||
1782 | ni_clear(ntfs_i(inode)); | |
1783 | } | |
1784 | ||
0a4e7ce6 DP |
1785 | /* |
1786 | * ntfs_translate_junction | |
1787 | * | |
1788 | * Translate a Windows junction target to the Linux equivalent. | |
1789 | * On junctions, targets are always absolute (they include the drive | |
1790 | * letter). We have no way of knowing if the target is for the current | |
1791 | * mounted device or not so we just assume it is. | |
1792 | */ | |
1793 | static int ntfs_translate_junction(const struct super_block *sb, | |
1794 | const struct dentry *link_de, char *target, | |
1795 | int target_len, int target_max) | |
1796 | { | |
1797 | int tl_len, err = target_len; | |
1798 | char *link_path_buffer = NULL, *link_path; | |
1799 | char *translated = NULL; | |
1800 | char *target_start; | |
1801 | int copy_len; | |
1802 | ||
1803 | link_path_buffer = kmalloc(PATH_MAX, GFP_NOFS); | |
1804 | if (!link_path_buffer) { | |
1805 | err = -ENOMEM; | |
1806 | goto out; | |
1807 | } | |
1808 | /* Get link path, relative to mount point */ | |
1809 | link_path = dentry_path_raw(link_de, link_path_buffer, PATH_MAX); | |
1810 | if (IS_ERR(link_path)) { | |
1811 | ntfs_err(sb, "Error getting link path"); | |
1812 | err = -EINVAL; | |
1813 | goto out; | |
1814 | } | |
1815 | ||
1816 | translated = kmalloc(PATH_MAX, GFP_NOFS); | |
1817 | if (!translated) { | |
1818 | err = -ENOMEM; | |
1819 | goto out; | |
1820 | } | |
1821 | ||
1822 | /* Make translated path a relative path to mount point */ | |
1823 | strcpy(translated, "./"); | |
07f4aa9d | 1824 | ++link_path; /* Skip leading / */ |
0a4e7ce6 DP |
1825 | for (tl_len = sizeof("./") - 1; *link_path; ++link_path) { |
1826 | if (*link_path == '/') { | |
1827 | if (PATH_MAX - tl_len < sizeof("../")) { | |
07f4aa9d KK |
1828 | ntfs_err(sb, |
1829 | "Link path %s has too many components", | |
0a4e7ce6 DP |
1830 | link_path); |
1831 | err = -EINVAL; | |
1832 | goto out; | |
1833 | } | |
1834 | strcpy(translated + tl_len, "../"); | |
1835 | tl_len += sizeof("../") - 1; | |
1836 | } | |
1837 | } | |
1838 | ||
1839 | /* Skip drive letter */ | |
1840 | target_start = target; | |
1841 | while (*target_start && *target_start != ':') | |
1842 | ++target_start; | |
1843 | ||
1844 | if (!*target_start) { | |
07f4aa9d KK |
1845 | ntfs_err(sb, "Link target (%s) missing drive separator", |
1846 | target); | |
0a4e7ce6 DP |
1847 | err = -EINVAL; |
1848 | goto out; | |
1849 | } | |
1850 | ||
1851 | /* Skip drive separator and leading /, if exists */ | |
1852 | target_start += 1 + (target_start[1] == '/'); | |
1853 | copy_len = target_len - (target_start - target); | |
1854 | ||
1855 | if (PATH_MAX - tl_len <= copy_len) { | |
1856 | ntfs_err(sb, "Link target %s too large for buffer (%d <= %d)", | |
1857 | target_start, PATH_MAX - tl_len, copy_len); | |
1858 | err = -EINVAL; | |
1859 | goto out; | |
1860 | } | |
1861 | ||
1862 | /* translated path has a trailing / and target_start does not */ | |
1863 | strcpy(translated + tl_len, target_start); | |
1864 | tl_len += copy_len; | |
1865 | if (target_max <= tl_len) { | |
1866 | ntfs_err(sb, "Target path %s too large for buffer (%d <= %d)", | |
1867 | translated, target_max, tl_len); | |
1868 | err = -EINVAL; | |
1869 | goto out; | |
1870 | } | |
1871 | strcpy(target, translated); | |
1872 | err = tl_len; | |
1873 | ||
1874 | out: | |
1875 | kfree(link_path_buffer); | |
1876 | kfree(translated); | |
1877 | return err; | |
1878 | } | |
1879 | ||
1880 | static noinline int ntfs_readlink_hlp(const struct dentry *link_de, | |
1881 | struct inode *inode, char *buffer, | |
82cae269 KK |
1882 | int buflen) |
1883 | { | |
4dbe8e44 | 1884 | int i, err = -EINVAL; |
82cae269 KK |
1885 | struct ntfs_inode *ni = ntfs_i(inode); |
1886 | struct super_block *sb = inode->i_sb; | |
1887 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
4dbe8e44 KK |
1888 | u64 size; |
1889 | u16 ulen = 0; | |
82cae269 KK |
1890 | void *to_free = NULL; |
1891 | struct REPARSE_DATA_BUFFER *rp; | |
4dbe8e44 | 1892 | const __le16 *uname; |
82cae269 KK |
1893 | struct ATTRIB *attr; |
1894 | ||
e8b8e97f | 1895 | /* Reparse data present. Try to parse it. */ |
82cae269 KK |
1896 | static_assert(!offsetof(struct REPARSE_DATA_BUFFER, ReparseTag)); |
1897 | static_assert(sizeof(u32) == sizeof(rp->ReparseTag)); | |
1898 | ||
1899 | *buffer = 0; | |
1900 | ||
82cae269 | 1901 | attr = ni_find_attr(ni, NULL, NULL, ATTR_REPARSE, NULL, 0, NULL, NULL); |
4dbe8e44 | 1902 | if (!attr) |
82cae269 | 1903 | goto out; |
82cae269 KK |
1904 | |
1905 | if (!attr->non_res) { | |
4dbe8e44 KK |
1906 | rp = resident_data_ex(attr, sizeof(struct REPARSE_DATA_BUFFER)); |
1907 | if (!rp) | |
82cae269 | 1908 | goto out; |
4dbe8e44 | 1909 | size = le32_to_cpu(attr->res.data_size); |
82cae269 | 1910 | } else { |
4dbe8e44 KK |
1911 | size = le64_to_cpu(attr->nres.data_size); |
1912 | rp = NULL; | |
1913 | } | |
1914 | ||
1915 | if (size > sbi->reparse.max_size || size <= sizeof(u32)) | |
1916 | goto out; | |
1917 | ||
1918 | if (!rp) { | |
1919 | rp = kmalloc(size, GFP_NOFS); | |
82cae269 KK |
1920 | if (!rp) { |
1921 | err = -ENOMEM; | |
1922 | goto out; | |
1923 | } | |
1924 | to_free = rp; | |
4dbe8e44 KK |
1925 | /* Read into temporal buffer. */ |
1926 | err = ntfs_read_run_nb(sbi, &ni->file.run, 0, rp, size, NULL); | |
82cae269 KK |
1927 | if (err) |
1928 | goto out; | |
1929 | } | |
1930 | ||
e8b8e97f | 1931 | /* Microsoft Tag. */ |
82cae269 KK |
1932 | switch (rp->ReparseTag) { |
1933 | case IO_REPARSE_TAG_MOUNT_POINT: | |
e8b8e97f | 1934 | /* Mount points and junctions. */ |
82cae269 | 1935 | /* Can we use 'Rp->MountPointReparseBuffer.PrintNameLength'? */ |
4dbe8e44 KK |
1936 | if (size <= offsetof(struct REPARSE_DATA_BUFFER, |
1937 | MountPointReparseBuffer.PathBuffer)) | |
82cae269 | 1938 | goto out; |
4dbe8e44 KK |
1939 | uname = Add2Ptr(rp, |
1940 | offsetof(struct REPARSE_DATA_BUFFER, | |
1941 | MountPointReparseBuffer.PathBuffer) + | |
1942 | le16_to_cpu(rp->MountPointReparseBuffer | |
1943 | .PrintNameOffset)); | |
1944 | ulen = le16_to_cpu(rp->MountPointReparseBuffer.PrintNameLength); | |
82cae269 KK |
1945 | break; |
1946 | ||
1947 | case IO_REPARSE_TAG_SYMLINK: | |
1948 | /* FolderSymbolicLink */ | |
1949 | /* Can we use 'Rp->SymbolicLinkReparseBuffer.PrintNameLength'? */ | |
4dbe8e44 KK |
1950 | if (size <= offsetof(struct REPARSE_DATA_BUFFER, |
1951 | SymbolicLinkReparseBuffer.PathBuffer)) | |
82cae269 | 1952 | goto out; |
4dbe8e44 KK |
1953 | uname = Add2Ptr( |
1954 | rp, offsetof(struct REPARSE_DATA_BUFFER, | |
1955 | SymbolicLinkReparseBuffer.PathBuffer) + | |
1956 | le16_to_cpu(rp->SymbolicLinkReparseBuffer | |
1957 | .PrintNameOffset)); | |
1958 | ulen = le16_to_cpu( | |
82cae269 KK |
1959 | rp->SymbolicLinkReparseBuffer.PrintNameLength); |
1960 | break; | |
1961 | ||
1962 | case IO_REPARSE_TAG_CLOUD: | |
1963 | case IO_REPARSE_TAG_CLOUD_1: | |
1964 | case IO_REPARSE_TAG_CLOUD_2: | |
1965 | case IO_REPARSE_TAG_CLOUD_3: | |
1966 | case IO_REPARSE_TAG_CLOUD_4: | |
1967 | case IO_REPARSE_TAG_CLOUD_5: | |
1968 | case IO_REPARSE_TAG_CLOUD_6: | |
1969 | case IO_REPARSE_TAG_CLOUD_7: | |
1970 | case IO_REPARSE_TAG_CLOUD_8: | |
1971 | case IO_REPARSE_TAG_CLOUD_9: | |
1972 | case IO_REPARSE_TAG_CLOUD_A: | |
1973 | case IO_REPARSE_TAG_CLOUD_B: | |
1974 | case IO_REPARSE_TAG_CLOUD_C: | |
1975 | case IO_REPARSE_TAG_CLOUD_D: | |
1976 | case IO_REPARSE_TAG_CLOUD_E: | |
1977 | case IO_REPARSE_TAG_CLOUD_F: | |
1978 | err = sizeof("OneDrive") - 1; | |
1979 | if (err > buflen) | |
1980 | err = buflen; | |
1981 | memcpy(buffer, "OneDrive", err); | |
1982 | goto out; | |
1983 | ||
1984 | default: | |
1985 | if (IsReparseTagMicrosoft(rp->ReparseTag)) { | |
d3624466 | 1986 | /* Unknown Microsoft Tag. */ |
82cae269 KK |
1987 | goto out; |
1988 | } | |
1989 | if (!IsReparseTagNameSurrogate(rp->ReparseTag) || | |
4dbe8e44 | 1990 | size <= sizeof(struct REPARSE_POINT)) { |
82cae269 KK |
1991 | goto out; |
1992 | } | |
1993 | ||
e8b8e97f | 1994 | /* Users tag. */ |
4dbe8e44 KK |
1995 | uname = Add2Ptr(rp, sizeof(struct REPARSE_POINT)); |
1996 | ulen = le16_to_cpu(rp->ReparseDataLength) - | |
82cae269 KK |
1997 | sizeof(struct REPARSE_POINT); |
1998 | } | |
1999 | ||
e8b8e97f | 2000 | /* Convert nlen from bytes to UNICODE chars. */ |
4dbe8e44 | 2001 | ulen >>= 1; |
82cae269 | 2002 | |
e8b8e97f | 2003 | /* Check that name is available. */ |
4dbe8e44 | 2004 | if (!ulen || uname + ulen > (__le16 *)Add2Ptr(rp, size)) |
82cae269 KK |
2005 | goto out; |
2006 | ||
e8b8e97f | 2007 | /* If name is already zero terminated then truncate it now. */ |
4dbe8e44 KK |
2008 | if (!uname[ulen - 1]) |
2009 | ulen -= 1; | |
82cae269 | 2010 | |
4dbe8e44 | 2011 | err = ntfs_utf16_to_nls(sbi, uname, ulen, buffer, buflen); |
82cae269 KK |
2012 | |
2013 | if (err < 0) | |
2014 | goto out; | |
2015 | ||
e8b8e97f | 2016 | /* Translate Windows '\' into Linux '/'. */ |
82cae269 KK |
2017 | for (i = 0; i < err; i++) { |
2018 | if (buffer[i] == '\\') | |
2019 | buffer[i] = '/'; | |
2020 | } | |
2021 | ||
e8b8e97f | 2022 | /* Always set last zero. */ |
82cae269 | 2023 | buffer[err] = 0; |
0a4e7ce6 DP |
2024 | |
2025 | /* If this is a junction, translate the link target. */ | |
2026 | if (rp->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT) | |
2027 | err = ntfs_translate_junction(sb, link_de, buffer, err, buflen); | |
2028 | ||
82cae269 | 2029 | out: |
195c52bd | 2030 | kfree(to_free); |
82cae269 KK |
2031 | return err; |
2032 | } | |
2033 | ||
2034 | static const char *ntfs_get_link(struct dentry *de, struct inode *inode, | |
2035 | struct delayed_call *done) | |
2036 | { | |
2037 | int err; | |
2038 | char *ret; | |
2039 | ||
2040 | if (!de) | |
2041 | return ERR_PTR(-ECHILD); | |
2042 | ||
2043 | ret = kmalloc(PAGE_SIZE, GFP_NOFS); | |
2044 | if (!ret) | |
2045 | return ERR_PTR(-ENOMEM); | |
2046 | ||
0a4e7ce6 | 2047 | err = ntfs_readlink_hlp(de, inode, ret, PAGE_SIZE); |
82cae269 KK |
2048 | if (err < 0) { |
2049 | kfree(ret); | |
2050 | return ERR_PTR(err); | |
2051 | } | |
2052 | ||
2053 | set_delayed_call(done, kfree_link, ret); | |
2054 | ||
2055 | return ret; | |
2056 | } | |
2057 | ||
2058 | // clang-format off | |
2059 | const struct inode_operations ntfs_link_inode_operations = { | |
2060 | .get_link = ntfs_get_link, | |
2061 | .setattr = ntfs3_setattr, | |
2062 | .listxattr = ntfs_listxattr, | |
2063 | .permission = ntfs_permission, | |
82cae269 KK |
2064 | }; |
2065 | ||
2066 | const struct address_space_operations ntfs_aops = { | |
f132ab7d | 2067 | .read_folio = ntfs_read_folio, |
82cae269 KK |
2068 | .readahead = ntfs_readahead, |
2069 | .writepage = ntfs_writepage, | |
2070 | .writepages = ntfs_writepages, | |
2071 | .write_begin = ntfs_write_begin, | |
2072 | .write_end = ntfs_write_end, | |
2073 | .direct_IO = ntfs_direct_IO, | |
2074 | .bmap = ntfs_bmap, | |
e621900a | 2075 | .dirty_folio = block_dirty_folio, |
724bbe49 | 2076 | .invalidate_folio = block_invalidate_folio, |
82cae269 KK |
2077 | }; |
2078 | ||
2079 | const struct address_space_operations ntfs_aops_cmpr = { | |
f132ab7d | 2080 | .read_folio = ntfs_read_folio, |
82cae269 KK |
2081 | .readahead = ntfs_readahead, |
2082 | }; | |
2083 | // clang-format on |