Commit | Line | Data |
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4342306f KK |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * | |
4 | * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved. | |
5 | * | |
e8b8e97f KA |
6 | * Regular file handling primitives for NTFS-based filesystems. |
7 | * | |
4342306f | 8 | */ |
e8b8e97f | 9 | |
4342306f KK |
10 | #include <linux/backing-dev.h> |
11 | #include <linux/buffer_head.h> | |
12 | #include <linux/compat.h> | |
13 | #include <linux/falloc.h> | |
14 | #include <linux/fiemap.h> | |
4342306f KK |
15 | |
16 | #include "debug.h" | |
17 | #include "ntfs.h" | |
18 | #include "ntfs_fs.h" | |
19 | ||
20 | static int ntfs_ioctl_fitrim(struct ntfs_sb_info *sbi, unsigned long arg) | |
21 | { | |
22 | struct fstrim_range __user *user_range; | |
23 | struct fstrim_range range; | |
24 | struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev); | |
25 | int err; | |
26 | ||
27 | if (!capable(CAP_SYS_ADMIN)) | |
28 | return -EPERM; | |
29 | ||
30 | if (!blk_queue_discard(q)) | |
31 | return -EOPNOTSUPP; | |
32 | ||
33 | user_range = (struct fstrim_range __user *)arg; | |
34 | if (copy_from_user(&range, user_range, sizeof(range))) | |
35 | return -EFAULT; | |
36 | ||
37 | range.minlen = max_t(u32, range.minlen, q->limits.discard_granularity); | |
38 | ||
39 | err = ntfs_trim_fs(sbi, &range); | |
40 | if (err < 0) | |
41 | return err; | |
42 | ||
43 | if (copy_to_user(user_range, &range, sizeof(range))) | |
44 | return -EFAULT; | |
45 | ||
46 | return 0; | |
47 | } | |
48 | ||
49 | static long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg) | |
50 | { | |
51 | struct inode *inode = file_inode(filp); | |
52 | struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; | |
4342306f KK |
53 | |
54 | switch (cmd) { | |
4342306f KK |
55 | case FITRIM: |
56 | return ntfs_ioctl_fitrim(sbi, arg); | |
57 | } | |
e8b8e97f | 58 | return -ENOTTY; /* Inappropriate ioctl for device. */ |
4342306f KK |
59 | } |
60 | ||
61 | #ifdef CONFIG_COMPAT | |
62 | static long ntfs_compat_ioctl(struct file *filp, u32 cmd, unsigned long arg) | |
63 | ||
64 | { | |
65 | return ntfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); | |
66 | } | |
67 | #endif | |
68 | ||
69 | /* | |
e8b8e97f | 70 | * ntfs_getattr - inode_operations::getattr |
4342306f KK |
71 | */ |
72 | int ntfs_getattr(struct user_namespace *mnt_userns, const struct path *path, | |
73 | struct kstat *stat, u32 request_mask, u32 flags) | |
74 | { | |
75 | struct inode *inode = d_inode(path->dentry); | |
76 | struct ntfs_inode *ni = ntfs_i(inode); | |
77 | ||
78 | if (is_compressed(ni)) | |
79 | stat->attributes |= STATX_ATTR_COMPRESSED; | |
80 | ||
81 | if (is_encrypted(ni)) | |
82 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
83 | ||
84 | stat->attributes_mask |= STATX_ATTR_COMPRESSED | STATX_ATTR_ENCRYPTED; | |
85 | ||
86 | generic_fillattr(mnt_userns, inode, stat); | |
87 | ||
88 | stat->result_mask |= STATX_BTIME; | |
89 | stat->btime = ni->i_crtime; | |
90 | stat->blksize = ni->mi.sbi->cluster_size; /* 512, 1K, ..., 2M */ | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static int ntfs_extend_initialized_size(struct file *file, | |
96 | struct ntfs_inode *ni, | |
97 | const loff_t valid, | |
98 | const loff_t new_valid) | |
99 | { | |
100 | struct inode *inode = &ni->vfs_inode; | |
101 | struct address_space *mapping = inode->i_mapping; | |
102 | struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; | |
103 | loff_t pos = valid; | |
104 | int err; | |
105 | ||
106 | if (is_resident(ni)) { | |
107 | ni->i_valid = new_valid; | |
108 | return 0; | |
109 | } | |
110 | ||
111 | WARN_ON(is_compressed(ni)); | |
112 | WARN_ON(valid >= new_valid); | |
113 | ||
114 | for (;;) { | |
115 | u32 zerofrom, len; | |
116 | struct page *page; | |
117 | void *fsdata; | |
118 | u8 bits; | |
119 | CLST vcn, lcn, clen; | |
120 | ||
121 | if (is_sparsed(ni)) { | |
122 | bits = sbi->cluster_bits; | |
123 | vcn = pos >> bits; | |
124 | ||
125 | err = attr_data_get_block(ni, vcn, 0, &lcn, &clen, | |
126 | NULL); | |
127 | if (err) | |
128 | goto out; | |
129 | ||
130 | if (lcn == SPARSE_LCN) { | |
131 | loff_t vbo = (loff_t)vcn << bits; | |
132 | loff_t to = vbo + ((loff_t)clen << bits); | |
133 | ||
134 | if (to <= new_valid) { | |
135 | ni->i_valid = to; | |
136 | pos = to; | |
137 | goto next; | |
138 | } | |
139 | ||
140 | if (vbo < pos) { | |
141 | pos = vbo; | |
142 | } else { | |
143 | to = (new_valid >> bits) << bits; | |
144 | if (pos < to) { | |
145 | ni->i_valid = to; | |
146 | pos = to; | |
147 | goto next; | |
148 | } | |
149 | } | |
150 | } | |
151 | } | |
152 | ||
153 | zerofrom = pos & (PAGE_SIZE - 1); | |
154 | len = PAGE_SIZE - zerofrom; | |
155 | ||
156 | if (pos + len > new_valid) | |
157 | len = new_valid - pos; | |
158 | ||
159 | err = pagecache_write_begin(file, mapping, pos, len, 0, &page, | |
160 | &fsdata); | |
161 | if (err) | |
162 | goto out; | |
163 | ||
164 | zero_user_segment(page, zerofrom, PAGE_SIZE); | |
165 | ||
e8b8e97f | 166 | /* This function in any case puts page. */ |
4342306f KK |
167 | err = pagecache_write_end(file, mapping, pos, len, len, page, |
168 | fsdata); | |
169 | if (err < 0) | |
170 | goto out; | |
171 | pos += len; | |
172 | ||
173 | next: | |
174 | if (pos >= new_valid) | |
175 | break; | |
176 | ||
177 | balance_dirty_pages_ratelimited(mapping); | |
178 | cond_resched(); | |
179 | } | |
180 | ||
181 | return 0; | |
182 | ||
183 | out: | |
184 | ni->i_valid = valid; | |
185 | ntfs_inode_warn(inode, "failed to extend initialized size to %llx.", | |
186 | new_valid); | |
187 | return err; | |
188 | } | |
189 | ||
190 | /* | |
e8b8e97f | 191 | * ntfs_zero_range - Helper function for punch_hole. |
d3624466 KK |
192 | * |
193 | * It zeroes a range [vbo, vbo_to). | |
4342306f KK |
194 | */ |
195 | static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to) | |
196 | { | |
197 | int err = 0; | |
198 | struct address_space *mapping = inode->i_mapping; | |
199 | u32 blocksize = 1 << inode->i_blkbits; | |
200 | pgoff_t idx = vbo >> PAGE_SHIFT; | |
201 | u32 z_start = vbo & (PAGE_SIZE - 1); | |
202 | pgoff_t idx_end = (vbo_to + PAGE_SIZE - 1) >> PAGE_SHIFT; | |
203 | loff_t page_off; | |
204 | struct buffer_head *head, *bh; | |
205 | u32 bh_next, bh_off, z_end; | |
206 | sector_t iblock; | |
207 | struct page *page; | |
208 | ||
209 | for (; idx < idx_end; idx += 1, z_start = 0) { | |
210 | page_off = (loff_t)idx << PAGE_SHIFT; | |
211 | z_end = (page_off + PAGE_SIZE) > vbo_to ? (vbo_to - page_off) | |
212 | : PAGE_SIZE; | |
213 | iblock = page_off >> inode->i_blkbits; | |
214 | ||
215 | page = find_or_create_page(mapping, idx, | |
216 | mapping_gfp_constraint(mapping, | |
217 | ~__GFP_FS)); | |
218 | if (!page) | |
219 | return -ENOMEM; | |
220 | ||
221 | if (!page_has_buffers(page)) | |
222 | create_empty_buffers(page, blocksize, 0); | |
223 | ||
224 | bh = head = page_buffers(page); | |
225 | bh_off = 0; | |
226 | do { | |
227 | bh_next = bh_off + blocksize; | |
228 | ||
229 | if (bh_next <= z_start || bh_off >= z_end) | |
230 | continue; | |
231 | ||
232 | if (!buffer_mapped(bh)) { | |
233 | ntfs_get_block(inode, iblock, bh, 0); | |
d3624466 | 234 | /* Unmapped? It's a hole - nothing to do. */ |
4342306f KK |
235 | if (!buffer_mapped(bh)) |
236 | continue; | |
237 | } | |
238 | ||
d3624466 | 239 | /* Ok, it's mapped. Make sure it's up-to-date. */ |
4342306f KK |
240 | if (PageUptodate(page)) |
241 | set_buffer_uptodate(bh); | |
242 | ||
243 | if (!buffer_uptodate(bh)) { | |
244 | lock_buffer(bh); | |
245 | bh->b_end_io = end_buffer_read_sync; | |
246 | get_bh(bh); | |
247 | submit_bh(REQ_OP_READ, 0, bh); | |
248 | ||
249 | wait_on_buffer(bh); | |
250 | if (!buffer_uptodate(bh)) { | |
251 | unlock_page(page); | |
252 | put_page(page); | |
253 | err = -EIO; | |
254 | goto out; | |
255 | } | |
256 | } | |
257 | ||
258 | mark_buffer_dirty(bh); | |
259 | ||
260 | } while (bh_off = bh_next, iblock += 1, | |
261 | head != (bh = bh->b_this_page)); | |
262 | ||
263 | zero_user_segment(page, z_start, z_end); | |
264 | ||
265 | unlock_page(page); | |
266 | put_page(page); | |
267 | cond_resched(); | |
268 | } | |
269 | out: | |
270 | mark_inode_dirty(inode); | |
271 | return err; | |
272 | } | |
273 | ||
274 | /* | |
d3624466 | 275 | * ntfs_sparse_cluster - Helper function to zero a new allocated clusters. |
4342306f | 276 | * |
4342306f KK |
277 | * NOTE: 512 <= cluster size <= 2M |
278 | */ | |
279 | void ntfs_sparse_cluster(struct inode *inode, struct page *page0, CLST vcn, | |
280 | CLST len) | |
281 | { | |
282 | struct address_space *mapping = inode->i_mapping; | |
283 | struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; | |
284 | u64 vbo = (u64)vcn << sbi->cluster_bits; | |
285 | u64 bytes = (u64)len << sbi->cluster_bits; | |
286 | u32 blocksize = 1 << inode->i_blkbits; | |
287 | pgoff_t idx0 = page0 ? page0->index : -1; | |
288 | loff_t vbo_clst = vbo & sbi->cluster_mask_inv; | |
289 | loff_t end = ntfs_up_cluster(sbi, vbo + bytes); | |
290 | pgoff_t idx = vbo_clst >> PAGE_SHIFT; | |
291 | u32 from = vbo_clst & (PAGE_SIZE - 1); | |
292 | pgoff_t idx_end = (end + PAGE_SIZE - 1) >> PAGE_SHIFT; | |
293 | loff_t page_off; | |
294 | u32 to; | |
295 | bool partial; | |
296 | struct page *page; | |
297 | ||
298 | for (; idx < idx_end; idx += 1, from = 0) { | |
299 | page = idx == idx0 ? page0 : grab_cache_page(mapping, idx); | |
300 | ||
301 | if (!page) | |
302 | continue; | |
303 | ||
304 | page_off = (loff_t)idx << PAGE_SHIFT; | |
305 | to = (page_off + PAGE_SIZE) > end ? (end - page_off) | |
306 | : PAGE_SIZE; | |
307 | partial = false; | |
308 | ||
309 | if ((from || PAGE_SIZE != to) && | |
310 | likely(!page_has_buffers(page))) { | |
311 | create_empty_buffers(page, blocksize, 0); | |
312 | } | |
313 | ||
314 | if (page_has_buffers(page)) { | |
315 | struct buffer_head *head, *bh; | |
316 | u32 bh_off = 0; | |
317 | ||
318 | bh = head = page_buffers(page); | |
319 | do { | |
320 | u32 bh_next = bh_off + blocksize; | |
321 | ||
322 | if (from <= bh_off && bh_next <= to) { | |
323 | set_buffer_uptodate(bh); | |
324 | mark_buffer_dirty(bh); | |
325 | } else if (!buffer_uptodate(bh)) { | |
326 | partial = true; | |
327 | } | |
328 | bh_off = bh_next; | |
329 | } while (head != (bh = bh->b_this_page)); | |
330 | } | |
331 | ||
332 | zero_user_segment(page, from, to); | |
333 | ||
334 | if (!partial) { | |
335 | if (!PageUptodate(page)) | |
336 | SetPageUptodate(page); | |
337 | set_page_dirty(page); | |
338 | } | |
339 | ||
340 | if (idx != idx0) { | |
341 | unlock_page(page); | |
342 | put_page(page); | |
343 | } | |
344 | cond_resched(); | |
345 | } | |
346 | mark_inode_dirty(inode); | |
347 | } | |
348 | ||
349 | /* | |
e8b8e97f | 350 | * ntfs_file_mmap - file_operations::mmap |
4342306f KK |
351 | */ |
352 | static int ntfs_file_mmap(struct file *file, struct vm_area_struct *vma) | |
353 | { | |
354 | struct address_space *mapping = file->f_mapping; | |
355 | struct inode *inode = mapping->host; | |
356 | struct ntfs_inode *ni = ntfs_i(inode); | |
357 | u64 from = ((u64)vma->vm_pgoff << PAGE_SHIFT); | |
358 | bool rw = vma->vm_flags & VM_WRITE; | |
359 | int err; | |
360 | ||
361 | if (is_encrypted(ni)) { | |
362 | ntfs_inode_warn(inode, "mmap encrypted not supported"); | |
363 | return -EOPNOTSUPP; | |
364 | } | |
365 | ||
366 | if (is_dedup(ni)) { | |
367 | ntfs_inode_warn(inode, "mmap deduplicated not supported"); | |
368 | return -EOPNOTSUPP; | |
369 | } | |
370 | ||
371 | if (is_compressed(ni) && rw) { | |
372 | ntfs_inode_warn(inode, "mmap(write) compressed not supported"); | |
373 | return -EOPNOTSUPP; | |
374 | } | |
375 | ||
376 | if (rw) { | |
377 | u64 to = min_t(loff_t, i_size_read(inode), | |
378 | from + vma->vm_end - vma->vm_start); | |
379 | ||
380 | if (is_sparsed(ni)) { | |
e8b8e97f | 381 | /* Allocate clusters for rw map. */ |
4342306f KK |
382 | struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; |
383 | CLST lcn, len; | |
384 | CLST vcn = from >> sbi->cluster_bits; | |
385 | CLST end = bytes_to_cluster(sbi, to); | |
386 | bool new; | |
387 | ||
388 | for (; vcn < end; vcn += len) { | |
389 | err = attr_data_get_block(ni, vcn, 1, &lcn, | |
390 | &len, &new); | |
391 | if (err) | |
392 | goto out; | |
393 | ||
394 | if (!new) | |
395 | continue; | |
396 | ntfs_sparse_cluster(inode, NULL, vcn, 1); | |
397 | } | |
398 | } | |
399 | ||
400 | if (ni->i_valid < to) { | |
401 | if (!inode_trylock(inode)) { | |
402 | err = -EAGAIN; | |
403 | goto out; | |
404 | } | |
405 | err = ntfs_extend_initialized_size(file, ni, | |
406 | ni->i_valid, to); | |
407 | inode_unlock(inode); | |
408 | if (err) | |
409 | goto out; | |
410 | } | |
411 | } | |
412 | ||
413 | err = generic_file_mmap(file, vma); | |
414 | out: | |
415 | return err; | |
416 | } | |
417 | ||
418 | static int ntfs_extend(struct inode *inode, loff_t pos, size_t count, | |
419 | struct file *file) | |
420 | { | |
421 | struct ntfs_inode *ni = ntfs_i(inode); | |
422 | struct address_space *mapping = inode->i_mapping; | |
423 | loff_t end = pos + count; | |
424 | bool extend_init = file && pos > ni->i_valid; | |
425 | int err; | |
426 | ||
427 | if (end <= inode->i_size && !extend_init) | |
428 | return 0; | |
429 | ||
e8b8e97f | 430 | /* Mark rw ntfs as dirty. It will be cleared at umount. */ |
4342306f KK |
431 | ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_DIRTY); |
432 | ||
433 | if (end > inode->i_size) { | |
434 | err = ntfs_set_size(inode, end); | |
435 | if (err) | |
436 | goto out; | |
437 | inode->i_size = end; | |
438 | } | |
439 | ||
440 | if (extend_init && !is_compressed(ni)) { | |
441 | err = ntfs_extend_initialized_size(file, ni, ni->i_valid, pos); | |
442 | if (err) | |
443 | goto out; | |
444 | } else { | |
445 | err = 0; | |
446 | } | |
447 | ||
448 | inode->i_ctime = inode->i_mtime = current_time(inode); | |
449 | mark_inode_dirty(inode); | |
450 | ||
451 | if (IS_SYNC(inode)) { | |
452 | int err2; | |
453 | ||
454 | err = filemap_fdatawrite_range(mapping, pos, end - 1); | |
455 | err2 = sync_mapping_buffers(mapping); | |
456 | if (!err) | |
457 | err = err2; | |
458 | err2 = write_inode_now(inode, 1); | |
459 | if (!err) | |
460 | err = err2; | |
461 | if (!err) | |
462 | err = filemap_fdatawait_range(mapping, pos, end - 1); | |
463 | } | |
464 | ||
465 | out: | |
466 | return err; | |
467 | } | |
468 | ||
469 | static int ntfs_truncate(struct inode *inode, loff_t new_size) | |
470 | { | |
471 | struct super_block *sb = inode->i_sb; | |
472 | struct ntfs_inode *ni = ntfs_i(inode); | |
473 | int err, dirty = 0; | |
474 | u64 new_valid; | |
475 | ||
476 | if (!S_ISREG(inode->i_mode)) | |
477 | return 0; | |
478 | ||
479 | if (is_compressed(ni)) { | |
480 | if (ni->i_valid > new_size) | |
481 | ni->i_valid = new_size; | |
482 | } else { | |
483 | err = block_truncate_page(inode->i_mapping, new_size, | |
484 | ntfs_get_block); | |
485 | if (err) | |
486 | return err; | |
487 | } | |
488 | ||
489 | new_valid = ntfs_up_block(sb, min_t(u64, ni->i_valid, new_size)); | |
490 | ||
491 | ni_lock(ni); | |
492 | ||
493 | truncate_setsize(inode, new_size); | |
494 | ||
495 | down_write(&ni->file.run_lock); | |
496 | err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, new_size, | |
497 | &new_valid, true, NULL); | |
498 | up_write(&ni->file.run_lock); | |
499 | ||
500 | if (new_valid < ni->i_valid) | |
501 | ni->i_valid = new_valid; | |
502 | ||
503 | ni_unlock(ni); | |
504 | ||
505 | ni->std_fa |= FILE_ATTRIBUTE_ARCHIVE; | |
506 | inode->i_ctime = inode->i_mtime = current_time(inode); | |
507 | if (!IS_DIRSYNC(inode)) { | |
508 | dirty = 1; | |
509 | } else { | |
510 | err = ntfs_sync_inode(inode); | |
511 | if (err) | |
512 | return err; | |
513 | } | |
514 | ||
515 | if (dirty) | |
516 | mark_inode_dirty(inode); | |
517 | ||
518 | /*ntfs_flush_inodes(inode->i_sb, inode, NULL);*/ | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
523 | /* | |
e8b8e97f KA |
524 | * ntfs_fallocate |
525 | * | |
4342306f KK |
526 | * Preallocate space for a file. This implements ntfs's fallocate file |
527 | * operation, which gets called from sys_fallocate system call. User | |
528 | * space requests 'len' bytes at 'vbo'. If FALLOC_FL_KEEP_SIZE is set | |
529 | * we just allocate clusters without zeroing them out. Otherwise we | |
530 | * allocate and zero out clusters via an expanding truncate. | |
531 | */ | |
532 | static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len) | |
533 | { | |
534 | struct inode *inode = file->f_mapping->host; | |
535 | struct super_block *sb = inode->i_sb; | |
536 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
537 | struct ntfs_inode *ni = ntfs_i(inode); | |
538 | loff_t end = vbo + len; | |
539 | loff_t vbo_down = round_down(vbo, PAGE_SIZE); | |
540 | loff_t i_size; | |
541 | int err; | |
542 | ||
e8b8e97f | 543 | /* No support for dir. */ |
4342306f KK |
544 | if (!S_ISREG(inode->i_mode)) |
545 | return -EOPNOTSUPP; | |
546 | ||
e8b8e97f | 547 | /* Return error if mode is not supported. */ |
4342306f KK |
548 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
549 | FALLOC_FL_COLLAPSE_RANGE)) { | |
550 | ntfs_inode_warn(inode, "fallocate(0x%x) is not supported", | |
551 | mode); | |
552 | return -EOPNOTSUPP; | |
553 | } | |
554 | ||
555 | ntfs_set_state(sbi, NTFS_DIRTY_DIRTY); | |
556 | ||
557 | inode_lock(inode); | |
558 | i_size = inode->i_size; | |
559 | ||
560 | if (WARN_ON(ni->ni_flags & NI_FLAG_COMPRESSED_MASK)) { | |
e8b8e97f | 561 | /* Should never be here, see ntfs_file_open. */ |
4342306f KK |
562 | err = -EOPNOTSUPP; |
563 | goto out; | |
564 | } | |
565 | ||
566 | if (mode & FALLOC_FL_PUNCH_HOLE) { | |
567 | u32 frame_size; | |
568 | loff_t mask, vbo_a, end_a, tmp; | |
569 | ||
570 | if (!(mode & FALLOC_FL_KEEP_SIZE)) { | |
571 | err = -EINVAL; | |
572 | goto out; | |
573 | } | |
574 | ||
575 | err = filemap_write_and_wait_range(inode->i_mapping, vbo, | |
576 | end - 1); | |
577 | if (err) | |
578 | goto out; | |
579 | ||
580 | err = filemap_write_and_wait_range(inode->i_mapping, end, | |
581 | LLONG_MAX); | |
582 | if (err) | |
583 | goto out; | |
584 | ||
585 | inode_dio_wait(inode); | |
586 | ||
587 | truncate_pagecache(inode, vbo_down); | |
588 | ||
589 | if (!is_sparsed(ni) && !is_compressed(ni)) { | |
8241fffa KK |
590 | /* |
591 | * Normal file, can't make hole. | |
592 | * TODO: Try to find way to save info about hole. | |
593 | */ | |
594 | err = -EOPNOTSUPP; | |
4342306f KK |
595 | goto out; |
596 | } | |
597 | ||
598 | ni_lock(ni); | |
599 | err = attr_punch_hole(ni, vbo, len, &frame_size); | |
600 | ni_unlock(ni); | |
601 | if (err != E_NTFS_NOTALIGNED) | |
602 | goto out; | |
603 | ||
d3624466 | 604 | /* Process not aligned punch. */ |
4342306f KK |
605 | mask = frame_size - 1; |
606 | vbo_a = (vbo + mask) & ~mask; | |
607 | end_a = end & ~mask; | |
608 | ||
609 | tmp = min(vbo_a, end); | |
610 | if (tmp > vbo) { | |
611 | err = ntfs_zero_range(inode, vbo, tmp); | |
612 | if (err) | |
613 | goto out; | |
614 | } | |
615 | ||
616 | if (vbo < end_a && end_a < end) { | |
617 | err = ntfs_zero_range(inode, end_a, end); | |
618 | if (err) | |
619 | goto out; | |
620 | } | |
621 | ||
622 | /* Aligned punch_hole */ | |
623 | if (end_a > vbo_a) { | |
624 | ni_lock(ni); | |
625 | err = attr_punch_hole(ni, vbo_a, end_a - vbo_a, NULL); | |
626 | ni_unlock(ni); | |
627 | } | |
628 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { | |
629 | if (mode & ~FALLOC_FL_COLLAPSE_RANGE) { | |
630 | err = -EINVAL; | |
631 | goto out; | |
632 | } | |
633 | ||
634 | /* | |
635 | * Write tail of the last page before removed range since | |
636 | * it will get removed from the page cache below. | |
637 | */ | |
638 | err = filemap_write_and_wait_range(inode->i_mapping, vbo_down, | |
639 | vbo); | |
640 | if (err) | |
641 | goto out; | |
642 | ||
643 | /* | |
644 | * Write data that will be shifted to preserve them | |
e8b8e97f | 645 | * when discarding page cache below. |
4342306f KK |
646 | */ |
647 | err = filemap_write_and_wait_range(inode->i_mapping, end, | |
648 | LLONG_MAX); | |
649 | if (err) | |
650 | goto out; | |
651 | ||
d3624466 | 652 | /* Wait for existing dio to complete. */ |
4342306f KK |
653 | inode_dio_wait(inode); |
654 | ||
655 | truncate_pagecache(inode, vbo_down); | |
656 | ||
657 | ni_lock(ni); | |
658 | err = attr_collapse_range(ni, vbo, len); | |
659 | ni_unlock(ni); | |
660 | } else { | |
661 | /* | |
e8b8e97f | 662 | * Normal file: Allocate clusters, do not change 'valid' size. |
4342306f KK |
663 | */ |
664 | err = ntfs_set_size(inode, max(end, i_size)); | |
665 | if (err) | |
666 | goto out; | |
667 | ||
668 | if (is_sparsed(ni) || is_compressed(ni)) { | |
669 | CLST vcn_v = ni->i_valid >> sbi->cluster_bits; | |
670 | CLST vcn = vbo >> sbi->cluster_bits; | |
671 | CLST cend = bytes_to_cluster(sbi, end); | |
672 | CLST lcn, clen; | |
673 | bool new; | |
674 | ||
675 | /* | |
e8b8e97f KA |
676 | * Allocate but do not zero new clusters. (see below comments) |
677 | * This breaks security: One can read unused on-disk areas. | |
678 | * Zeroing these clusters may be too long. | |
679 | * Maybe we should check here for root rights? | |
4342306f KK |
680 | */ |
681 | for (; vcn < cend; vcn += clen) { | |
682 | err = attr_data_get_block(ni, vcn, cend - vcn, | |
683 | &lcn, &clen, &new); | |
684 | if (err) | |
685 | goto out; | |
686 | if (!new || vcn >= vcn_v) | |
687 | continue; | |
688 | ||
689 | /* | |
e8b8e97f KA |
690 | * Unwritten area. |
691 | * NTFS is not able to store several unwritten areas. | |
692 | * Activate 'ntfs_sparse_cluster' to zero new allocated clusters. | |
4342306f KK |
693 | * |
694 | * Dangerous in case: | |
695 | * 1G of sparsed clusters + 1 cluster of data => | |
696 | * valid_size == 1G + 1 cluster | |
697 | * fallocate(1G) will zero 1G and this can be very long | |
e8b8e97f | 698 | * xfstest 016/086 will fail without 'ntfs_sparse_cluster'. |
4342306f KK |
699 | */ |
700 | ntfs_sparse_cluster(inode, NULL, vcn, | |
701 | min(vcn_v - vcn, clen)); | |
702 | } | |
703 | } | |
704 | ||
705 | if (mode & FALLOC_FL_KEEP_SIZE) { | |
706 | ni_lock(ni); | |
e8b8e97f | 707 | /* True - Keep preallocated. */ |
4342306f KK |
708 | err = attr_set_size(ni, ATTR_DATA, NULL, 0, |
709 | &ni->file.run, i_size, &ni->i_valid, | |
710 | true, NULL); | |
711 | ni_unlock(ni); | |
712 | } | |
713 | } | |
714 | ||
715 | out: | |
716 | if (err == -EFBIG) | |
717 | err = -ENOSPC; | |
718 | ||
719 | if (!err) { | |
720 | inode->i_ctime = inode->i_mtime = current_time(inode); | |
721 | mark_inode_dirty(inode); | |
722 | } | |
723 | ||
724 | inode_unlock(inode); | |
725 | return err; | |
726 | } | |
727 | ||
728 | /* | |
e8b8e97f | 729 | * ntfs3_setattr - inode_operations::setattr |
4342306f KK |
730 | */ |
731 | int ntfs3_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, | |
732 | struct iattr *attr) | |
733 | { | |
734 | struct super_block *sb = dentry->d_sb; | |
735 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
736 | struct inode *inode = d_inode(dentry); | |
737 | struct ntfs_inode *ni = ntfs_i(inode); | |
738 | u32 ia_valid = attr->ia_valid; | |
739 | umode_t mode = inode->i_mode; | |
740 | int err; | |
741 | ||
28a941ff | 742 | if (sbi->options->noacsrules) { |
e8b8e97f | 743 | /* "No access rules" - Force any changes of time etc. */ |
4342306f | 744 | attr->ia_valid |= ATTR_FORCE; |
e8b8e97f | 745 | /* and disable for editing some attributes. */ |
4342306f KK |
746 | attr->ia_valid &= ~(ATTR_UID | ATTR_GID | ATTR_MODE); |
747 | ia_valid = attr->ia_valid; | |
748 | } | |
749 | ||
750 | err = setattr_prepare(mnt_userns, dentry, attr); | |
751 | if (err) | |
752 | goto out; | |
753 | ||
754 | if (ia_valid & ATTR_SIZE) { | |
755 | loff_t oldsize = inode->i_size; | |
756 | ||
757 | if (WARN_ON(ni->ni_flags & NI_FLAG_COMPRESSED_MASK)) { | |
e8b8e97f | 758 | /* Should never be here, see ntfs_file_open(). */ |
4342306f KK |
759 | err = -EOPNOTSUPP; |
760 | goto out; | |
761 | } | |
762 | inode_dio_wait(inode); | |
763 | ||
764 | if (attr->ia_size < oldsize) | |
765 | err = ntfs_truncate(inode, attr->ia_size); | |
766 | else if (attr->ia_size > oldsize) | |
767 | err = ntfs_extend(inode, attr->ia_size, 0, NULL); | |
768 | ||
769 | if (err) | |
770 | goto out; | |
771 | ||
772 | ni->ni_flags |= NI_FLAG_UPDATE_PARENT; | |
773 | } | |
774 | ||
775 | setattr_copy(mnt_userns, inode, attr); | |
776 | ||
777 | if (mode != inode->i_mode) { | |
778 | err = ntfs_acl_chmod(mnt_userns, inode); | |
779 | if (err) | |
780 | goto out; | |
781 | ||
e8b8e97f | 782 | /* Linux 'w' -> Windows 'ro'. */ |
4342306f KK |
783 | if (0222 & inode->i_mode) |
784 | ni->std_fa &= ~FILE_ATTRIBUTE_READONLY; | |
785 | else | |
786 | ni->std_fa |= FILE_ATTRIBUTE_READONLY; | |
787 | } | |
788 | ||
789 | if (ia_valid & (ATTR_UID | ATTR_GID | ATTR_MODE)) | |
790 | ntfs_save_wsl_perm(inode); | |
791 | mark_inode_dirty(inode); | |
792 | out: | |
793 | return err; | |
794 | } | |
795 | ||
796 | static ssize_t ntfs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) | |
797 | { | |
4342306f KK |
798 | struct file *file = iocb->ki_filp; |
799 | struct inode *inode = file->f_mapping->host; | |
800 | struct ntfs_inode *ni = ntfs_i(inode); | |
801 | ||
802 | if (is_encrypted(ni)) { | |
803 | ntfs_inode_warn(inode, "encrypted i/o not supported"); | |
804 | return -EOPNOTSUPP; | |
805 | } | |
806 | ||
807 | if (is_compressed(ni) && (iocb->ki_flags & IOCB_DIRECT)) { | |
808 | ntfs_inode_warn(inode, "direct i/o + compressed not supported"); | |
809 | return -EOPNOTSUPP; | |
810 | } | |
811 | ||
812 | #ifndef CONFIG_NTFS3_LZX_XPRESS | |
813 | if (ni->ni_flags & NI_FLAG_COMPRESSED_MASK) { | |
814 | ntfs_inode_warn( | |
815 | inode, | |
816 | "activate CONFIG_NTFS3_LZX_XPRESS to read external compressed files"); | |
817 | return -EOPNOTSUPP; | |
818 | } | |
819 | #endif | |
820 | ||
821 | if (is_dedup(ni)) { | |
822 | ntfs_inode_warn(inode, "read deduplicated not supported"); | |
823 | return -EOPNOTSUPP; | |
824 | } | |
825 | ||
dd854e4b | 826 | return generic_file_read_iter(iocb, iter); |
4342306f KK |
827 | } |
828 | ||
e8b8e97f KA |
829 | /* |
830 | * ntfs_get_frame_pages | |
831 | * | |
832 | * Return: Array of locked pages. | |
833 | */ | |
4342306f KK |
834 | static int ntfs_get_frame_pages(struct address_space *mapping, pgoff_t index, |
835 | struct page **pages, u32 pages_per_frame, | |
836 | bool *frame_uptodate) | |
837 | { | |
838 | gfp_t gfp_mask = mapping_gfp_mask(mapping); | |
839 | u32 npages; | |
840 | ||
841 | *frame_uptodate = true; | |
842 | ||
843 | for (npages = 0; npages < pages_per_frame; npages++, index++) { | |
844 | struct page *page; | |
845 | ||
846 | page = find_or_create_page(mapping, index, gfp_mask); | |
847 | if (!page) { | |
848 | while (npages--) { | |
849 | page = pages[npages]; | |
850 | unlock_page(page); | |
851 | put_page(page); | |
852 | } | |
853 | ||
854 | return -ENOMEM; | |
855 | } | |
856 | ||
857 | if (!PageUptodate(page)) | |
858 | *frame_uptodate = false; | |
859 | ||
860 | pages[npages] = page; | |
861 | } | |
862 | ||
863 | return 0; | |
864 | } | |
865 | ||
e8b8e97f KA |
866 | /* |
867 | * ntfs_compress_write - Helper for ntfs_file_write_iter() (compressed files). | |
868 | */ | |
4342306f KK |
869 | static ssize_t ntfs_compress_write(struct kiocb *iocb, struct iov_iter *from) |
870 | { | |
871 | int err; | |
872 | struct file *file = iocb->ki_filp; | |
873 | size_t count = iov_iter_count(from); | |
874 | loff_t pos = iocb->ki_pos; | |
875 | struct inode *inode = file_inode(file); | |
876 | loff_t i_size = inode->i_size; | |
877 | struct address_space *mapping = inode->i_mapping; | |
878 | struct ntfs_inode *ni = ntfs_i(inode); | |
879 | u64 valid = ni->i_valid; | |
880 | struct ntfs_sb_info *sbi = ni->mi.sbi; | |
881 | struct page *page, **pages = NULL; | |
882 | size_t written = 0; | |
883 | u8 frame_bits = NTFS_LZNT_CUNIT + sbi->cluster_bits; | |
884 | u32 frame_size = 1u << frame_bits; | |
885 | u32 pages_per_frame = frame_size >> PAGE_SHIFT; | |
886 | u32 ip, off; | |
887 | CLST frame; | |
888 | u64 frame_vbo; | |
889 | pgoff_t index; | |
890 | bool frame_uptodate; | |
891 | ||
892 | if (frame_size < PAGE_SIZE) { | |
893 | /* | |
894 | * frame_size == 8K if cluster 512 | |
895 | * frame_size == 64K if cluster 4096 | |
896 | */ | |
897 | ntfs_inode_warn(inode, "page size is bigger than frame size"); | |
898 | return -EOPNOTSUPP; | |
899 | } | |
900 | ||
345482bc | 901 | pages = kmalloc_array(pages_per_frame, sizeof(struct page *), GFP_NOFS); |
4342306f KK |
902 | if (!pages) |
903 | return -ENOMEM; | |
904 | ||
905 | current->backing_dev_info = inode_to_bdi(inode); | |
906 | err = file_remove_privs(file); | |
907 | if (err) | |
908 | goto out; | |
909 | ||
910 | err = file_update_time(file); | |
911 | if (err) | |
912 | goto out; | |
913 | ||
e8b8e97f | 914 | /* Zero range [valid : pos). */ |
4342306f KK |
915 | while (valid < pos) { |
916 | CLST lcn, clen; | |
917 | ||
918 | frame = valid >> frame_bits; | |
919 | frame_vbo = valid & ~(frame_size - 1); | |
920 | off = valid & (frame_size - 1); | |
921 | ||
922 | err = attr_data_get_block(ni, frame << NTFS_LZNT_CUNIT, 0, &lcn, | |
923 | &clen, NULL); | |
924 | if (err) | |
925 | goto out; | |
926 | ||
927 | if (lcn == SPARSE_LCN) { | |
928 | ni->i_valid = valid = | |
929 | frame_vbo + ((u64)clen << sbi->cluster_bits); | |
930 | continue; | |
931 | } | |
932 | ||
e8b8e97f | 933 | /* Load full frame. */ |
4342306f KK |
934 | err = ntfs_get_frame_pages(mapping, frame_vbo >> PAGE_SHIFT, |
935 | pages, pages_per_frame, | |
936 | &frame_uptodate); | |
937 | if (err) | |
938 | goto out; | |
939 | ||
940 | if (!frame_uptodate && off) { | |
941 | err = ni_read_frame(ni, frame_vbo, pages, | |
942 | pages_per_frame); | |
943 | if (err) { | |
944 | for (ip = 0; ip < pages_per_frame; ip++) { | |
945 | page = pages[ip]; | |
946 | unlock_page(page); | |
947 | put_page(page); | |
948 | } | |
949 | goto out; | |
950 | } | |
951 | } | |
952 | ||
953 | ip = off >> PAGE_SHIFT; | |
954 | off = offset_in_page(valid); | |
955 | for (; ip < pages_per_frame; ip++, off = 0) { | |
956 | page = pages[ip]; | |
957 | zero_user_segment(page, off, PAGE_SIZE); | |
958 | flush_dcache_page(page); | |
959 | SetPageUptodate(page); | |
960 | } | |
961 | ||
962 | ni_lock(ni); | |
963 | err = ni_write_frame(ni, pages, pages_per_frame); | |
964 | ni_unlock(ni); | |
965 | ||
966 | for (ip = 0; ip < pages_per_frame; ip++) { | |
967 | page = pages[ip]; | |
968 | SetPageUptodate(page); | |
969 | unlock_page(page); | |
970 | put_page(page); | |
971 | } | |
972 | ||
973 | if (err) | |
974 | goto out; | |
975 | ||
976 | ni->i_valid = valid = frame_vbo + frame_size; | |
977 | } | |
978 | ||
e8b8e97f | 979 | /* Copy user data [pos : pos + count). */ |
4342306f KK |
980 | while (count) { |
981 | size_t copied, bytes; | |
982 | ||
983 | off = pos & (frame_size - 1); | |
984 | bytes = frame_size - off; | |
985 | if (bytes > count) | |
986 | bytes = count; | |
987 | ||
988 | frame = pos >> frame_bits; | |
989 | frame_vbo = pos & ~(frame_size - 1); | |
990 | index = frame_vbo >> PAGE_SHIFT; | |
991 | ||
992 | if (unlikely(iov_iter_fault_in_readable(from, bytes))) { | |
993 | err = -EFAULT; | |
994 | goto out; | |
995 | } | |
996 | ||
e8b8e97f | 997 | /* Load full frame. */ |
4342306f KK |
998 | err = ntfs_get_frame_pages(mapping, index, pages, |
999 | pages_per_frame, &frame_uptodate); | |
1000 | if (err) | |
1001 | goto out; | |
1002 | ||
1003 | if (!frame_uptodate) { | |
1004 | loff_t to = pos + bytes; | |
1005 | ||
1006 | if (off || (to < i_size && (to & (frame_size - 1)))) { | |
1007 | err = ni_read_frame(ni, frame_vbo, pages, | |
1008 | pages_per_frame); | |
1009 | if (err) { | |
1010 | for (ip = 0; ip < pages_per_frame; | |
1011 | ip++) { | |
1012 | page = pages[ip]; | |
1013 | unlock_page(page); | |
1014 | put_page(page); | |
1015 | } | |
1016 | goto out; | |
1017 | } | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | WARN_ON(!bytes); | |
1022 | copied = 0; | |
1023 | ip = off >> PAGE_SHIFT; | |
1024 | off = offset_in_page(pos); | |
1025 | ||
e8b8e97f | 1026 | /* Copy user data to pages. */ |
4342306f KK |
1027 | for (;;) { |
1028 | size_t cp, tail = PAGE_SIZE - off; | |
1029 | ||
1030 | page = pages[ip]; | |
1031 | cp = copy_page_from_iter_atomic(page, off, | |
1032 | min(tail, bytes), from); | |
1033 | flush_dcache_page(page); | |
1034 | ||
1035 | copied += cp; | |
1036 | bytes -= cp; | |
1037 | if (!bytes || !cp) | |
1038 | break; | |
1039 | ||
1040 | if (cp < tail) { | |
1041 | off += cp; | |
1042 | } else { | |
1043 | ip++; | |
1044 | off = 0; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | ni_lock(ni); | |
1049 | err = ni_write_frame(ni, pages, pages_per_frame); | |
1050 | ni_unlock(ni); | |
1051 | ||
1052 | for (ip = 0; ip < pages_per_frame; ip++) { | |
1053 | page = pages[ip]; | |
1054 | ClearPageDirty(page); | |
1055 | SetPageUptodate(page); | |
1056 | unlock_page(page); | |
1057 | put_page(page); | |
1058 | } | |
1059 | ||
1060 | if (err) | |
1061 | goto out; | |
1062 | ||
1063 | /* | |
1064 | * We can loop for a long time in here. Be nice and allow | |
1065 | * us to schedule out to avoid softlocking if preempt | |
1066 | * is disabled. | |
1067 | */ | |
1068 | cond_resched(); | |
1069 | ||
1070 | pos += copied; | |
1071 | written += copied; | |
1072 | ||
1073 | count = iov_iter_count(from); | |
1074 | } | |
1075 | ||
1076 | out: | |
195c52bd | 1077 | kfree(pages); |
4342306f KK |
1078 | |
1079 | current->backing_dev_info = NULL; | |
1080 | ||
1081 | if (err < 0) | |
1082 | return err; | |
1083 | ||
1084 | iocb->ki_pos += written; | |
1085 | if (iocb->ki_pos > ni->i_valid) | |
1086 | ni->i_valid = iocb->ki_pos; | |
1087 | ||
1088 | return written; | |
1089 | } | |
1090 | ||
1091 | /* | |
e8b8e97f | 1092 | * ntfs_file_write_iter - file_operations::write_iter |
4342306f KK |
1093 | */ |
1094 | static ssize_t ntfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) | |
1095 | { | |
1096 | struct file *file = iocb->ki_filp; | |
1097 | struct address_space *mapping = file->f_mapping; | |
1098 | struct inode *inode = mapping->host; | |
1099 | ssize_t ret; | |
1100 | struct ntfs_inode *ni = ntfs_i(inode); | |
1101 | ||
1102 | if (is_encrypted(ni)) { | |
1103 | ntfs_inode_warn(inode, "encrypted i/o not supported"); | |
1104 | return -EOPNOTSUPP; | |
1105 | } | |
1106 | ||
1107 | if (is_compressed(ni) && (iocb->ki_flags & IOCB_DIRECT)) { | |
1108 | ntfs_inode_warn(inode, "direct i/o + compressed not supported"); | |
1109 | return -EOPNOTSUPP; | |
1110 | } | |
1111 | ||
1112 | if (is_dedup(ni)) { | |
1113 | ntfs_inode_warn(inode, "write into deduplicated not supported"); | |
1114 | return -EOPNOTSUPP; | |
1115 | } | |
1116 | ||
1117 | if (!inode_trylock(inode)) { | |
1118 | if (iocb->ki_flags & IOCB_NOWAIT) | |
1119 | return -EAGAIN; | |
1120 | inode_lock(inode); | |
1121 | } | |
1122 | ||
1123 | ret = generic_write_checks(iocb, from); | |
1124 | if (ret <= 0) | |
1125 | goto out; | |
1126 | ||
1127 | if (WARN_ON(ni->ni_flags & NI_FLAG_COMPRESSED_MASK)) { | |
d3624466 | 1128 | /* Should never be here, see ntfs_file_open(). */ |
4342306f KK |
1129 | ret = -EOPNOTSUPP; |
1130 | goto out; | |
1131 | } | |
1132 | ||
1133 | ret = ntfs_extend(inode, iocb->ki_pos, ret, file); | |
1134 | if (ret) | |
1135 | goto out; | |
1136 | ||
1137 | ret = is_compressed(ni) ? ntfs_compress_write(iocb, from) | |
1138 | : __generic_file_write_iter(iocb, from); | |
1139 | ||
1140 | out: | |
1141 | inode_unlock(inode); | |
1142 | ||
1143 | if (ret > 0) | |
1144 | ret = generic_write_sync(iocb, ret); | |
1145 | ||
1146 | return ret; | |
1147 | } | |
1148 | ||
1149 | /* | |
e8b8e97f | 1150 | * ntfs_file_open - file_operations::open |
4342306f KK |
1151 | */ |
1152 | int ntfs_file_open(struct inode *inode, struct file *file) | |
1153 | { | |
1154 | struct ntfs_inode *ni = ntfs_i(inode); | |
1155 | ||
1156 | if (unlikely((is_compressed(ni) || is_encrypted(ni)) && | |
1157 | (file->f_flags & O_DIRECT))) { | |
1158 | return -EOPNOTSUPP; | |
1159 | } | |
1160 | ||
e8b8e97f | 1161 | /* Decompress "external compressed" file if opened for rw. */ |
4342306f KK |
1162 | if ((ni->ni_flags & NI_FLAG_COMPRESSED_MASK) && |
1163 | (file->f_flags & (O_WRONLY | O_RDWR | O_TRUNC))) { | |
1164 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
1165 | int err = ni_decompress_file(ni); | |
1166 | ||
1167 | if (err) | |
1168 | return err; | |
1169 | #else | |
1170 | ntfs_inode_warn( | |
1171 | inode, | |
1172 | "activate CONFIG_NTFS3_LZX_XPRESS to write external compressed files"); | |
1173 | return -EOPNOTSUPP; | |
1174 | #endif | |
1175 | } | |
1176 | ||
1177 | return generic_file_open(inode, file); | |
1178 | } | |
1179 | ||
1180 | /* | |
e8b8e97f | 1181 | * ntfs_file_release - file_operations::release |
4342306f KK |
1182 | */ |
1183 | static int ntfs_file_release(struct inode *inode, struct file *file) | |
1184 | { | |
1185 | struct ntfs_inode *ni = ntfs_i(inode); | |
1186 | struct ntfs_sb_info *sbi = ni->mi.sbi; | |
1187 | int err = 0; | |
1188 | ||
e8b8e97f | 1189 | /* If we are last writer on the inode, drop the block reservation. */ |
564c97bd | 1190 | if (sbi->options->prealloc && ((file->f_mode & FMODE_WRITE) && |
4342306f KK |
1191 | atomic_read(&inode->i_writecount) == 1)) { |
1192 | ni_lock(ni); | |
1193 | down_write(&ni->file.run_lock); | |
1194 | ||
1195 | err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, | |
1196 | inode->i_size, &ni->i_valid, false, NULL); | |
1197 | ||
1198 | up_write(&ni->file.run_lock); | |
1199 | ni_unlock(ni); | |
1200 | } | |
1201 | return err; | |
1202 | } | |
1203 | ||
e8b8e97f KA |
1204 | /* |
1205 | * ntfs_fiemap - file_operations::fiemap | |
1206 | */ | |
4342306f KK |
1207 | int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1208 | __u64 start, __u64 len) | |
1209 | { | |
1210 | int err; | |
1211 | struct ntfs_inode *ni = ntfs_i(inode); | |
1212 | ||
d4e8e135 KA |
1213 | err = fiemap_prep(inode, fieinfo, start, &len, ~FIEMAP_FLAG_XATTR); |
1214 | if (err) | |
1215 | return err; | |
4342306f KK |
1216 | |
1217 | ni_lock(ni); | |
1218 | ||
1219 | err = ni_fiemap(ni, fieinfo, start, len); | |
1220 | ||
1221 | ni_unlock(ni); | |
1222 | ||
1223 | return err; | |
1224 | } | |
1225 | ||
1226 | // clang-format off | |
1227 | const struct inode_operations ntfs_file_inode_operations = { | |
1228 | .getattr = ntfs_getattr, | |
1229 | .setattr = ntfs3_setattr, | |
1230 | .listxattr = ntfs_listxattr, | |
1231 | .permission = ntfs_permission, | |
1232 | .get_acl = ntfs_get_acl, | |
1233 | .set_acl = ntfs_set_acl, | |
1234 | .fiemap = ntfs_fiemap, | |
1235 | }; | |
1236 | ||
1237 | const struct file_operations ntfs_file_operations = { | |
1238 | .llseek = generic_file_llseek, | |
1239 | .read_iter = ntfs_file_read_iter, | |
1240 | .write_iter = ntfs_file_write_iter, | |
1241 | .unlocked_ioctl = ntfs_ioctl, | |
1242 | #ifdef CONFIG_COMPAT | |
1243 | .compat_ioctl = ntfs_compat_ioctl, | |
1244 | #endif | |
1245 | .splice_read = generic_file_splice_read, | |
1246 | .mmap = ntfs_file_mmap, | |
1247 | .open = ntfs_file_open, | |
1248 | .fsync = generic_file_fsync, | |
1249 | .splice_write = iter_file_splice_write, | |
1250 | .fallocate = ntfs_fallocate, | |
1251 | .release = ntfs_file_release, | |
1252 | }; | |
1253 | // clang-format on |