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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 | 10 | #include <linux/backing-dev.h> |
ccdf7741 | 11 | #include <linux/blkdev.h> |
4342306f KK |
12 | #include <linux/buffer_head.h> |
13 | #include <linux/compat.h> | |
14 | #include <linux/falloc.h> | |
15 | #include <linux/fiemap.h> | |
4342306f KK |
16 | |
17 | #include "debug.h" | |
18 | #include "ntfs.h" | |
19 | #include "ntfs_fs.h" | |
20 | ||
21 | static int ntfs_ioctl_fitrim(struct ntfs_sb_info *sbi, unsigned long arg) | |
22 | { | |
23 | struct fstrim_range __user *user_range; | |
24 | struct fstrim_range range; | |
96de65a9 | 25 | struct block_device *dev; |
4342306f KK |
26 | int err; |
27 | ||
28 | if (!capable(CAP_SYS_ADMIN)) | |
29 | return -EPERM; | |
30 | ||
96de65a9 KK |
31 | dev = sbi->sb->s_bdev; |
32 | if (!bdev_max_discard_sectors(dev)) | |
4342306f KK |
33 | return -EOPNOTSUPP; |
34 | ||
35 | user_range = (struct fstrim_range __user *)arg; | |
36 | if (copy_from_user(&range, user_range, sizeof(range))) | |
37 | return -EFAULT; | |
38 | ||
96de65a9 | 39 | range.minlen = max_t(u32, range.minlen, bdev_discard_granularity(dev)); |
4342306f KK |
40 | |
41 | err = ntfs_trim_fs(sbi, &range); | |
42 | if (err < 0) | |
43 | return err; | |
44 | ||
45 | if (copy_to_user(user_range, &range, sizeof(range))) | |
46 | return -EFAULT; | |
47 | ||
48 | return 0; | |
49 | } | |
50 | ||
51 | static long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg) | |
52 | { | |
53 | struct inode *inode = file_inode(filp); | |
54 | struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; | |
4342306f KK |
55 | |
56 | switch (cmd) { | |
4342306f KK |
57 | case FITRIM: |
58 | return ntfs_ioctl_fitrim(sbi, arg); | |
59 | } | |
e8b8e97f | 60 | return -ENOTTY; /* Inappropriate ioctl for device. */ |
4342306f KK |
61 | } |
62 | ||
63 | #ifdef CONFIG_COMPAT | |
64 | static long ntfs_compat_ioctl(struct file *filp, u32 cmd, unsigned long arg) | |
65 | ||
66 | { | |
67 | return ntfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); | |
68 | } | |
69 | #endif | |
70 | ||
71 | /* | |
e8b8e97f | 72 | * ntfs_getattr - inode_operations::getattr |
4342306f | 73 | */ |
b74d24f7 | 74 | int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, |
4342306f KK |
75 | struct kstat *stat, u32 request_mask, u32 flags) |
76 | { | |
77 | struct inode *inode = d_inode(path->dentry); | |
78 | struct ntfs_inode *ni = ntfs_i(inode); | |
79 | ||
80 | if (is_compressed(ni)) | |
81 | stat->attributes |= STATX_ATTR_COMPRESSED; | |
82 | ||
83 | if (is_encrypted(ni)) | |
84 | stat->attributes |= STATX_ATTR_ENCRYPTED; | |
85 | ||
86 | stat->attributes_mask |= STATX_ATTR_COMPRESSED | STATX_ATTR_ENCRYPTED; | |
87 | ||
0d72b928 | 88 | generic_fillattr(idmap, request_mask, inode, stat); |
4342306f KK |
89 | |
90 | stat->result_mask |= STATX_BTIME; | |
91 | stat->btime = ni->i_crtime; | |
92 | stat->blksize = ni->mi.sbi->cluster_size; /* 512, 1K, ..., 2M */ | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | static int ntfs_extend_initialized_size(struct file *file, | |
98 | struct ntfs_inode *ni, | |
99 | const loff_t valid, | |
100 | const loff_t new_valid) | |
101 | { | |
102 | struct inode *inode = &ni->vfs_inode; | |
103 | struct address_space *mapping = inode->i_mapping; | |
104 | struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; | |
105 | loff_t pos = valid; | |
106 | int err; | |
107 | ||
108 | if (is_resident(ni)) { | |
109 | ni->i_valid = new_valid; | |
110 | return 0; | |
111 | } | |
112 | ||
113 | WARN_ON(is_compressed(ni)); | |
114 | WARN_ON(valid >= new_valid); | |
115 | ||
116 | for (;;) { | |
117 | u32 zerofrom, len; | |
118 | struct page *page; | |
4342306f KK |
119 | u8 bits; |
120 | CLST vcn, lcn, clen; | |
121 | ||
122 | if (is_sparsed(ni)) { | |
123 | bits = sbi->cluster_bits; | |
124 | vcn = pos >> bits; | |
125 | ||
c380b52f KK |
126 | err = attr_data_get_block(ni, vcn, 1, &lcn, &clen, NULL, |
127 | false); | |
4342306f KK |
128 | if (err) |
129 | goto out; | |
130 | ||
131 | if (lcn == SPARSE_LCN) { | |
2f56a3f8 KK |
132 | pos = ((loff_t)clen + vcn) << bits; |
133 | ni->i_valid = pos; | |
134 | goto next; | |
4342306f KK |
135 | } |
136 | } | |
137 | ||
138 | zerofrom = pos & (PAGE_SIZE - 1); | |
139 | len = PAGE_SIZE - zerofrom; | |
140 | ||
141 | if (pos + len > new_valid) | |
142 | len = new_valid - pos; | |
143 | ||
652118b8 | 144 | err = ntfs_write_begin(file, mapping, pos, len, &page, NULL); |
4342306f KK |
145 | if (err) |
146 | goto out; | |
147 | ||
148 | zero_user_segment(page, zerofrom, PAGE_SIZE); | |
149 | ||
e8b8e97f | 150 | /* This function in any case puts page. */ |
652118b8 | 151 | err = ntfs_write_end(file, mapping, pos, len, len, page, NULL); |
4342306f KK |
152 | if (err < 0) |
153 | goto out; | |
154 | pos += len; | |
155 | ||
156 | next: | |
157 | if (pos >= new_valid) | |
158 | break; | |
159 | ||
160 | balance_dirty_pages_ratelimited(mapping); | |
161 | cond_resched(); | |
162 | } | |
163 | ||
164 | return 0; | |
165 | ||
166 | out: | |
167 | ni->i_valid = valid; | |
168 | ntfs_inode_warn(inode, "failed to extend initialized size to %llx.", | |
169 | new_valid); | |
170 | return err; | |
171 | } | |
172 | ||
173 | /* | |
e8b8e97f | 174 | * ntfs_zero_range - Helper function for punch_hole. |
d3624466 KK |
175 | * |
176 | * It zeroes a range [vbo, vbo_to). | |
4342306f KK |
177 | */ |
178 | static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to) | |
179 | { | |
180 | int err = 0; | |
181 | struct address_space *mapping = inode->i_mapping; | |
f39244e2 | 182 | u32 blocksize = i_blocksize(inode); |
4342306f | 183 | pgoff_t idx = vbo >> PAGE_SHIFT; |
c380b52f | 184 | u32 from = vbo & (PAGE_SIZE - 1); |
4342306f KK |
185 | pgoff_t idx_end = (vbo_to + PAGE_SIZE - 1) >> PAGE_SHIFT; |
186 | loff_t page_off; | |
187 | struct buffer_head *head, *bh; | |
c380b52f | 188 | u32 bh_next, bh_off, to; |
4342306f | 189 | sector_t iblock; |
c3f4200a | 190 | struct folio *folio; |
4342306f | 191 | |
c380b52f | 192 | for (; idx < idx_end; idx += 1, from = 0) { |
4342306f | 193 | page_off = (loff_t)idx << PAGE_SHIFT; |
96de65a9 | 194 | to = (page_off + PAGE_SIZE) > vbo_to ? (vbo_to - page_off) : |
f0377761 | 195 | PAGE_SIZE; |
4342306f KK |
196 | iblock = page_off >> inode->i_blkbits; |
197 | ||
c3f4200a MWO |
198 | folio = __filemap_get_folio(mapping, idx, |
199 | FGP_LOCK | FGP_ACCESSED | FGP_CREAT, | |
200 | mapping_gfp_constraint(mapping, ~__GFP_FS)); | |
201 | if (IS_ERR(folio)) | |
202 | return PTR_ERR(folio); | |
4342306f | 203 | |
c3f4200a MWO |
204 | head = folio_buffers(folio); |
205 | if (!head) | |
0a88810d | 206 | head = create_empty_buffers(folio, blocksize, 0); |
4342306f | 207 | |
c3f4200a | 208 | bh = head; |
4342306f KK |
209 | bh_off = 0; |
210 | do { | |
211 | bh_next = bh_off + blocksize; | |
212 | ||
c380b52f | 213 | if (bh_next <= from || bh_off >= to) |
4342306f KK |
214 | continue; |
215 | ||
216 | if (!buffer_mapped(bh)) { | |
217 | ntfs_get_block(inode, iblock, bh, 0); | |
d3624466 | 218 | /* Unmapped? It's a hole - nothing to do. */ |
4342306f KK |
219 | if (!buffer_mapped(bh)) |
220 | continue; | |
221 | } | |
222 | ||
d3624466 | 223 | /* Ok, it's mapped. Make sure it's up-to-date. */ |
c3f4200a | 224 | if (folio_test_uptodate(folio)) |
4342306f KK |
225 | set_buffer_uptodate(bh); |
226 | ||
227 | if (!buffer_uptodate(bh)) { | |
c20bc9c6 KK |
228 | err = bh_read(bh, 0); |
229 | if (err < 0) { | |
c3f4200a MWO |
230 | folio_unlock(folio); |
231 | folio_put(folio); | |
4342306f KK |
232 | goto out; |
233 | } | |
234 | } | |
235 | ||
236 | mark_buffer_dirty(bh); | |
237 | ||
238 | } while (bh_off = bh_next, iblock += 1, | |
239 | head != (bh = bh->b_this_page)); | |
240 | ||
c3f4200a | 241 | folio_zero_segment(folio, from, to); |
4342306f | 242 | |
c3f4200a MWO |
243 | folio_unlock(folio); |
244 | folio_put(folio); | |
4342306f KK |
245 | cond_resched(); |
246 | } | |
247 | out: | |
248 | mark_inode_dirty(inode); | |
249 | return err; | |
250 | } | |
251 | ||
4342306f | 252 | /* |
e8b8e97f | 253 | * ntfs_file_mmap - file_operations::mmap |
4342306f KK |
254 | */ |
255 | static int ntfs_file_mmap(struct file *file, struct vm_area_struct *vma) | |
256 | { | |
257 | struct address_space *mapping = file->f_mapping; | |
258 | struct inode *inode = mapping->host; | |
259 | struct ntfs_inode *ni = ntfs_i(inode); | |
260 | u64 from = ((u64)vma->vm_pgoff << PAGE_SHIFT); | |
261 | bool rw = vma->vm_flags & VM_WRITE; | |
262 | int err; | |
263 | ||
264 | if (is_encrypted(ni)) { | |
265 | ntfs_inode_warn(inode, "mmap encrypted not supported"); | |
266 | return -EOPNOTSUPP; | |
267 | } | |
268 | ||
269 | if (is_dedup(ni)) { | |
270 | ntfs_inode_warn(inode, "mmap deduplicated not supported"); | |
271 | return -EOPNOTSUPP; | |
272 | } | |
273 | ||
274 | if (is_compressed(ni) && rw) { | |
275 | ntfs_inode_warn(inode, "mmap(write) compressed not supported"); | |
276 | return -EOPNOTSUPP; | |
277 | } | |
278 | ||
279 | if (rw) { | |
280 | u64 to = min_t(loff_t, i_size_read(inode), | |
281 | from + vma->vm_end - vma->vm_start); | |
282 | ||
283 | if (is_sparsed(ni)) { | |
e8b8e97f | 284 | /* Allocate clusters for rw map. */ |
4342306f KK |
285 | struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info; |
286 | CLST lcn, len; | |
287 | CLST vcn = from >> sbi->cluster_bits; | |
288 | CLST end = bytes_to_cluster(sbi, to); | |
289 | bool new; | |
290 | ||
291 | for (; vcn < end; vcn += len) { | |
292 | err = attr_data_get_block(ni, vcn, 1, &lcn, | |
c380b52f | 293 | &len, &new, true); |
4342306f KK |
294 | if (err) |
295 | goto out; | |
4342306f KK |
296 | } |
297 | } | |
298 | ||
299 | if (ni->i_valid < to) { | |
300 | if (!inode_trylock(inode)) { | |
301 | err = -EAGAIN; | |
302 | goto out; | |
303 | } | |
304 | err = ntfs_extend_initialized_size(file, ni, | |
305 | ni->i_valid, to); | |
306 | inode_unlock(inode); | |
307 | if (err) | |
308 | goto out; | |
309 | } | |
310 | } | |
311 | ||
312 | err = generic_file_mmap(file, vma); | |
313 | out: | |
314 | return err; | |
315 | } | |
316 | ||
317 | static int ntfs_extend(struct inode *inode, loff_t pos, size_t count, | |
318 | struct file *file) | |
319 | { | |
320 | struct ntfs_inode *ni = ntfs_i(inode); | |
321 | struct address_space *mapping = inode->i_mapping; | |
322 | loff_t end = pos + count; | |
323 | bool extend_init = file && pos > ni->i_valid; | |
324 | int err; | |
325 | ||
326 | if (end <= inode->i_size && !extend_init) | |
327 | return 0; | |
328 | ||
e8b8e97f | 329 | /* Mark rw ntfs as dirty. It will be cleared at umount. */ |
4342306f KK |
330 | ntfs_set_state(ni->mi.sbi, NTFS_DIRTY_DIRTY); |
331 | ||
332 | if (end > inode->i_size) { | |
333 | err = ntfs_set_size(inode, end); | |
334 | if (err) | |
335 | goto out; | |
4342306f KK |
336 | } |
337 | ||
338 | if (extend_init && !is_compressed(ni)) { | |
339 | err = ntfs_extend_initialized_size(file, ni, ni->i_valid, pos); | |
340 | if (err) | |
341 | goto out; | |
342 | } else { | |
343 | err = 0; | |
344 | } | |
345 | ||
2be861fa | 346 | inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); |
4342306f KK |
347 | mark_inode_dirty(inode); |
348 | ||
349 | if (IS_SYNC(inode)) { | |
350 | int err2; | |
351 | ||
352 | err = filemap_fdatawrite_range(mapping, pos, end - 1); | |
353 | err2 = sync_mapping_buffers(mapping); | |
354 | if (!err) | |
355 | err = err2; | |
356 | err2 = write_inode_now(inode, 1); | |
357 | if (!err) | |
358 | err = err2; | |
359 | if (!err) | |
360 | err = filemap_fdatawait_range(mapping, pos, end - 1); | |
361 | } | |
362 | ||
363 | out: | |
364 | return err; | |
365 | } | |
366 | ||
367 | static int ntfs_truncate(struct inode *inode, loff_t new_size) | |
368 | { | |
369 | struct super_block *sb = inode->i_sb; | |
370 | struct ntfs_inode *ni = ntfs_i(inode); | |
371 | int err, dirty = 0; | |
372 | u64 new_valid; | |
373 | ||
374 | if (!S_ISREG(inode->i_mode)) | |
375 | return 0; | |
376 | ||
377 | if (is_compressed(ni)) { | |
378 | if (ni->i_valid > new_size) | |
379 | ni->i_valid = new_size; | |
380 | } else { | |
381 | err = block_truncate_page(inode->i_mapping, new_size, | |
382 | ntfs_get_block); | |
383 | if (err) | |
384 | return err; | |
385 | } | |
386 | ||
387 | new_valid = ntfs_up_block(sb, min_t(u64, ni->i_valid, new_size)); | |
388 | ||
4342306f KK |
389 | truncate_setsize(inode, new_size); |
390 | ||
0226635c TH |
391 | ni_lock(ni); |
392 | ||
4342306f KK |
393 | down_write(&ni->file.run_lock); |
394 | err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, new_size, | |
e95113ed | 395 | &new_valid, ni->mi.sbi->options->prealloc, NULL); |
4342306f KK |
396 | up_write(&ni->file.run_lock); |
397 | ||
398 | if (new_valid < ni->i_valid) | |
399 | ni->i_valid = new_valid; | |
400 | ||
401 | ni_unlock(ni); | |
402 | ||
403 | ni->std_fa |= FILE_ATTRIBUTE_ARCHIVE; | |
2be861fa | 404 | inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); |
4342306f KK |
405 | if (!IS_DIRSYNC(inode)) { |
406 | dirty = 1; | |
407 | } else { | |
408 | err = ntfs_sync_inode(inode); | |
409 | if (err) | |
410 | return err; | |
411 | } | |
412 | ||
413 | if (dirty) | |
414 | mark_inode_dirty(inode); | |
415 | ||
416 | /*ntfs_flush_inodes(inode->i_sb, inode, NULL);*/ | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | /* | |
e8b8e97f KA |
422 | * ntfs_fallocate |
423 | * | |
4342306f KK |
424 | * Preallocate space for a file. This implements ntfs's fallocate file |
425 | * operation, which gets called from sys_fallocate system call. User | |
426 | * space requests 'len' bytes at 'vbo'. If FALLOC_FL_KEEP_SIZE is set | |
427 | * we just allocate clusters without zeroing them out. Otherwise we | |
428 | * allocate and zero out clusters via an expanding truncate. | |
429 | */ | |
430 | static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len) | |
431 | { | |
432 | struct inode *inode = file->f_mapping->host; | |
e4d2f4fd | 433 | struct address_space *mapping = inode->i_mapping; |
4342306f KK |
434 | struct super_block *sb = inode->i_sb; |
435 | struct ntfs_sb_info *sbi = sb->s_fs_info; | |
436 | struct ntfs_inode *ni = ntfs_i(inode); | |
437 | loff_t end = vbo + len; | |
c380b52f KK |
438 | loff_t vbo_down = round_down(vbo, max_t(unsigned long, |
439 | sbi->cluster_size, PAGE_SIZE)); | |
e4d2f4fd KK |
440 | bool is_supported_holes = is_sparsed(ni) || is_compressed(ni); |
441 | loff_t i_size, new_size; | |
442 | bool map_locked; | |
4342306f KK |
443 | int err; |
444 | ||
e8b8e97f | 445 | /* No support for dir. */ |
4342306f KK |
446 | if (!S_ISREG(inode->i_mode)) |
447 | return -EOPNOTSUPP; | |
448 | ||
e4d2f4fd KK |
449 | /* |
450 | * vfs_fallocate checks all possible combinations of mode. | |
451 | * Do additional checks here before ntfs_set_state(dirty). | |
452 | */ | |
453 | if (mode & FALLOC_FL_PUNCH_HOLE) { | |
454 | if (!is_supported_holes) | |
455 | return -EOPNOTSUPP; | |
456 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { | |
457 | } else if (mode & FALLOC_FL_INSERT_RANGE) { | |
458 | if (!is_supported_holes) | |
459 | return -EOPNOTSUPP; | |
460 | } else if (mode & | |
461 | ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | | |
462 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)) { | |
4342306f KK |
463 | ntfs_inode_warn(inode, "fallocate(0x%x) is not supported", |
464 | mode); | |
465 | return -EOPNOTSUPP; | |
466 | } | |
467 | ||
468 | ntfs_set_state(sbi, NTFS_DIRTY_DIRTY); | |
469 | ||
470 | inode_lock(inode); | |
471 | i_size = inode->i_size; | |
e4d2f4fd KK |
472 | new_size = max(end, i_size); |
473 | map_locked = false; | |
4342306f KK |
474 | |
475 | if (WARN_ON(ni->ni_flags & NI_FLAG_COMPRESSED_MASK)) { | |
e8b8e97f | 476 | /* Should never be here, see ntfs_file_open. */ |
4342306f KK |
477 | err = -EOPNOTSUPP; |
478 | goto out; | |
479 | } | |
480 | ||
e4d2f4fd KK |
481 | if (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE | |
482 | FALLOC_FL_INSERT_RANGE)) { | |
483 | inode_dio_wait(inode); | |
484 | filemap_invalidate_lock(mapping); | |
485 | map_locked = true; | |
486 | } | |
487 | ||
4342306f KK |
488 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
489 | u32 frame_size; | |
490 | loff_t mask, vbo_a, end_a, tmp; | |
491 | ||
c380b52f KK |
492 | err = filemap_write_and_wait_range(mapping, vbo_down, |
493 | LLONG_MAX); | |
4342306f KK |
494 | if (err) |
495 | goto out; | |
496 | ||
4342306f KK |
497 | truncate_pagecache(inode, vbo_down); |
498 | ||
4342306f KK |
499 | ni_lock(ni); |
500 | err = attr_punch_hole(ni, vbo, len, &frame_size); | |
501 | ni_unlock(ni); | |
502 | if (err != E_NTFS_NOTALIGNED) | |
503 | goto out; | |
504 | ||
d3624466 | 505 | /* Process not aligned punch. */ |
4342306f KK |
506 | mask = frame_size - 1; |
507 | vbo_a = (vbo + mask) & ~mask; | |
508 | end_a = end & ~mask; | |
509 | ||
510 | tmp = min(vbo_a, end); | |
511 | if (tmp > vbo) { | |
512 | err = ntfs_zero_range(inode, vbo, tmp); | |
513 | if (err) | |
514 | goto out; | |
515 | } | |
516 | ||
517 | if (vbo < end_a && end_a < end) { | |
518 | err = ntfs_zero_range(inode, end_a, end); | |
519 | if (err) | |
520 | goto out; | |
521 | } | |
522 | ||
523 | /* Aligned punch_hole */ | |
524 | if (end_a > vbo_a) { | |
525 | ni_lock(ni); | |
526 | err = attr_punch_hole(ni, vbo_a, end_a - vbo_a, NULL); | |
527 | ni_unlock(ni); | |
528 | } | |
529 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { | |
4342306f KK |
530 | /* |
531 | * Write tail of the last page before removed range since | |
532 | * it will get removed from the page cache below. | |
533 | */ | |
e4d2f4fd | 534 | err = filemap_write_and_wait_range(mapping, vbo_down, vbo); |
4342306f KK |
535 | if (err) |
536 | goto out; | |
537 | ||
538 | /* | |
539 | * Write data that will be shifted to preserve them | |
e8b8e97f | 540 | * when discarding page cache below. |
4342306f | 541 | */ |
e4d2f4fd | 542 | err = filemap_write_and_wait_range(mapping, end, LLONG_MAX); |
4342306f KK |
543 | if (err) |
544 | goto out; | |
545 | ||
4342306f KK |
546 | truncate_pagecache(inode, vbo_down); |
547 | ||
548 | ni_lock(ni); | |
549 | err = attr_collapse_range(ni, vbo, len); | |
550 | ni_unlock(ni); | |
e4d2f4fd KK |
551 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
552 | /* Check new size. */ | |
553 | err = inode_newsize_ok(inode, new_size); | |
554 | if (err) | |
555 | goto out; | |
556 | ||
557 | /* Write out all dirty pages. */ | |
558 | err = filemap_write_and_wait_range(mapping, vbo_down, | |
559 | LLONG_MAX); | |
560 | if (err) | |
561 | goto out; | |
562 | truncate_pagecache(inode, vbo_down); | |
11434697 | 563 | |
e4d2f4fd KK |
564 | ni_lock(ni); |
565 | err = attr_insert_range(ni, vbo, len); | |
566 | ni_unlock(ni); | |
4342306f | 567 | } else { |
e4d2f4fd | 568 | /* Check new size. */ |
96de65a9 | 569 | u8 cluster_bits = sbi->cluster_bits; |
b3e04872 KK |
570 | |
571 | /* generic/213: expected -ENOSPC instead of -EFBIG. */ | |
572 | if (!is_supported_holes) { | |
573 | loff_t to_alloc = new_size - inode_get_bytes(inode); | |
574 | ||
575 | if (to_alloc > 0 && | |
96de65a9 | 576 | (to_alloc >> cluster_bits) > |
b3e04872 KK |
577 | wnd_zeroes(&sbi->used.bitmap)) { |
578 | err = -ENOSPC; | |
579 | goto out; | |
580 | } | |
581 | } | |
11434697 KK |
582 | |
583 | err = inode_newsize_ok(inode, new_size); | |
584 | if (err) | |
585 | goto out; | |
586 | ||
ad26a9c8 KK |
587 | if (new_size > i_size) { |
588 | /* | |
589 | * Allocate clusters, do not change 'valid' size. | |
590 | */ | |
591 | err = ntfs_set_size(inode, new_size); | |
592 | if (err) | |
593 | goto out; | |
594 | } | |
4342306f | 595 | |
e4d2f4fd | 596 | if (is_supported_holes) { |
96de65a9 | 597 | CLST vcn = vbo >> cluster_bits; |
4342306f | 598 | CLST cend = bytes_to_cluster(sbi, end); |
c380b52f | 599 | CLST cend_v = bytes_to_cluster(sbi, ni->i_valid); |
4342306f KK |
600 | CLST lcn, clen; |
601 | bool new; | |
602 | ||
c380b52f KK |
603 | if (cend_v > cend) |
604 | cend_v = cend; | |
605 | ||
4342306f | 606 | /* |
c380b52f | 607 | * Allocate and zero new clusters. |
e8b8e97f | 608 | * Zeroing these clusters may be too long. |
c380b52f KK |
609 | */ |
610 | for (; vcn < cend_v; vcn += clen) { | |
611 | err = attr_data_get_block(ni, vcn, cend_v - vcn, | |
612 | &lcn, &clen, &new, | |
613 | true); | |
614 | if (err) | |
615 | goto out; | |
616 | } | |
617 | /* | |
618 | * Allocate but not zero new clusters. | |
4342306f KK |
619 | */ |
620 | for (; vcn < cend; vcn += clen) { | |
621 | err = attr_data_get_block(ni, vcn, cend - vcn, | |
c380b52f KK |
622 | &lcn, &clen, &new, |
623 | false); | |
4342306f KK |
624 | if (err) |
625 | goto out; | |
4342306f KK |
626 | } |
627 | } | |
628 | ||
629 | if (mode & FALLOC_FL_KEEP_SIZE) { | |
630 | ni_lock(ni); | |
e8b8e97f | 631 | /* True - Keep preallocated. */ |
4342306f KK |
632 | err = attr_set_size(ni, ATTR_DATA, NULL, 0, |
633 | &ni->file.run, i_size, &ni->i_valid, | |
634 | true, NULL); | |
635 | ni_unlock(ni); | |
ad26a9c8 KK |
636 | } else if (new_size > i_size) { |
637 | inode->i_size = new_size; | |
4342306f KK |
638 | } |
639 | } | |
640 | ||
641 | out: | |
e4d2f4fd KK |
642 | if (map_locked) |
643 | filemap_invalidate_unlock(mapping); | |
4342306f KK |
644 | |
645 | if (!err) { | |
2be861fa | 646 | inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); |
4342306f KK |
647 | mark_inode_dirty(inode); |
648 | } | |
649 | ||
650 | inode_unlock(inode); | |
651 | return err; | |
652 | } | |
653 | ||
654 | /* | |
e8b8e97f | 655 | * ntfs3_setattr - inode_operations::setattr |
4342306f | 656 | */ |
c1632a0f | 657 | int ntfs3_setattr(struct mnt_idmap *idmap, struct dentry *dentry, |
4342306f KK |
658 | struct iattr *attr) |
659 | { | |
4342306f KK |
660 | struct inode *inode = d_inode(dentry); |
661 | struct ntfs_inode *ni = ntfs_i(inode); | |
662 | u32 ia_valid = attr->ia_valid; | |
663 | umode_t mode = inode->i_mode; | |
664 | int err; | |
665 | ||
c1632a0f | 666 | err = setattr_prepare(idmap, dentry, attr); |
4342306f KK |
667 | if (err) |
668 | goto out; | |
669 | ||
670 | if (ia_valid & ATTR_SIZE) { | |
ad26a9c8 | 671 | loff_t newsize, oldsize; |
4342306f KK |
672 | |
673 | if (WARN_ON(ni->ni_flags & NI_FLAG_COMPRESSED_MASK)) { | |
e8b8e97f | 674 | /* Should never be here, see ntfs_file_open(). */ |
4342306f KK |
675 | err = -EOPNOTSUPP; |
676 | goto out; | |
677 | } | |
678 | inode_dio_wait(inode); | |
ad26a9c8 KK |
679 | oldsize = inode->i_size; |
680 | newsize = attr->ia_size; | |
4342306f | 681 | |
ad26a9c8 KK |
682 | if (newsize <= oldsize) |
683 | err = ntfs_truncate(inode, newsize); | |
684 | else | |
685 | err = ntfs_extend(inode, newsize, 0, NULL); | |
4342306f KK |
686 | |
687 | if (err) | |
688 | goto out; | |
689 | ||
690 | ni->ni_flags |= NI_FLAG_UPDATE_PARENT; | |
ad26a9c8 | 691 | inode->i_size = newsize; |
4342306f KK |
692 | } |
693 | ||
c1632a0f | 694 | setattr_copy(idmap, inode, attr); |
4342306f KK |
695 | |
696 | if (mode != inode->i_mode) { | |
13e83a49 | 697 | err = ntfs_acl_chmod(idmap, dentry); |
4342306f KK |
698 | if (err) |
699 | goto out; | |
700 | ||
e8b8e97f | 701 | /* Linux 'w' -> Windows 'ro'. */ |
4342306f KK |
702 | if (0222 & inode->i_mode) |
703 | ni->std_fa &= ~FILE_ATTRIBUTE_READONLY; | |
704 | else | |
705 | ni->std_fa |= FILE_ATTRIBUTE_READONLY; | |
706 | } | |
707 | ||
708 | if (ia_valid & (ATTR_UID | ATTR_GID | ATTR_MODE)) | |
1842fbc8 | 709 | ntfs_save_wsl_perm(inode, NULL); |
4342306f KK |
710 | mark_inode_dirty(inode); |
711 | out: | |
712 | return err; | |
713 | } | |
714 | ||
715 | static ssize_t ntfs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) | |
716 | { | |
4342306f KK |
717 | struct file *file = iocb->ki_filp; |
718 | struct inode *inode = file->f_mapping->host; | |
719 | struct ntfs_inode *ni = ntfs_i(inode); | |
720 | ||
721 | if (is_encrypted(ni)) { | |
722 | ntfs_inode_warn(inode, "encrypted i/o not supported"); | |
723 | return -EOPNOTSUPP; | |
724 | } | |
725 | ||
726 | if (is_compressed(ni) && (iocb->ki_flags & IOCB_DIRECT)) { | |
727 | ntfs_inode_warn(inode, "direct i/o + compressed not supported"); | |
728 | return -EOPNOTSUPP; | |
729 | } | |
730 | ||
731 | #ifndef CONFIG_NTFS3_LZX_XPRESS | |
732 | if (ni->ni_flags & NI_FLAG_COMPRESSED_MASK) { | |
733 | ntfs_inode_warn( | |
734 | inode, | |
735 | "activate CONFIG_NTFS3_LZX_XPRESS to read external compressed files"); | |
736 | return -EOPNOTSUPP; | |
737 | } | |
738 | #endif | |
739 | ||
740 | if (is_dedup(ni)) { | |
741 | ntfs_inode_warn(inode, "read deduplicated not supported"); | |
742 | return -EOPNOTSUPP; | |
743 | } | |
744 | ||
dd854e4b | 745 | return generic_file_read_iter(iocb, iter); |
4342306f KK |
746 | } |
747 | ||
51494398 | 748 | static ssize_t ntfs_file_splice_read(struct file *in, loff_t *ppos, |
f684073c KK |
749 | struct pipe_inode_info *pipe, size_t len, |
750 | unsigned int flags) | |
51494398 DH |
751 | { |
752 | struct inode *inode = in->f_mapping->host; | |
753 | struct ntfs_inode *ni = ntfs_i(inode); | |
754 | ||
755 | if (is_encrypted(ni)) { | |
756 | ntfs_inode_warn(inode, "encrypted i/o not supported"); | |
757 | return -EOPNOTSUPP; | |
758 | } | |
759 | ||
760 | #ifndef CONFIG_NTFS3_LZX_XPRESS | |
761 | if (ni->ni_flags & NI_FLAG_COMPRESSED_MASK) { | |
762 | ntfs_inode_warn( | |
763 | inode, | |
764 | "activate CONFIG_NTFS3_LZX_XPRESS to read external compressed files"); | |
765 | return -EOPNOTSUPP; | |
766 | } | |
767 | #endif | |
768 | ||
769 | if (is_dedup(ni)) { | |
770 | ntfs_inode_warn(inode, "read deduplicated not supported"); | |
771 | return -EOPNOTSUPP; | |
772 | } | |
773 | ||
2cb1e089 | 774 | return filemap_splice_read(in, ppos, pipe, len, flags); |
51494398 DH |
775 | } |
776 | ||
e8b8e97f KA |
777 | /* |
778 | * ntfs_get_frame_pages | |
779 | * | |
780 | * Return: Array of locked pages. | |
781 | */ | |
4342306f KK |
782 | static int ntfs_get_frame_pages(struct address_space *mapping, pgoff_t index, |
783 | struct page **pages, u32 pages_per_frame, | |
784 | bool *frame_uptodate) | |
785 | { | |
786 | gfp_t gfp_mask = mapping_gfp_mask(mapping); | |
787 | u32 npages; | |
788 | ||
789 | *frame_uptodate = true; | |
790 | ||
791 | for (npages = 0; npages < pages_per_frame; npages++, index++) { | |
792 | struct page *page; | |
793 | ||
794 | page = find_or_create_page(mapping, index, gfp_mask); | |
795 | if (!page) { | |
796 | while (npages--) { | |
797 | page = pages[npages]; | |
798 | unlock_page(page); | |
799 | put_page(page); | |
800 | } | |
801 | ||
802 | return -ENOMEM; | |
803 | } | |
804 | ||
805 | if (!PageUptodate(page)) | |
806 | *frame_uptodate = false; | |
807 | ||
808 | pages[npages] = page; | |
809 | } | |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
e8b8e97f KA |
814 | /* |
815 | * ntfs_compress_write - Helper for ntfs_file_write_iter() (compressed files). | |
816 | */ | |
4342306f KK |
817 | static ssize_t ntfs_compress_write(struct kiocb *iocb, struct iov_iter *from) |
818 | { | |
819 | int err; | |
820 | struct file *file = iocb->ki_filp; | |
821 | size_t count = iov_iter_count(from); | |
822 | loff_t pos = iocb->ki_pos; | |
823 | struct inode *inode = file_inode(file); | |
824 | loff_t i_size = inode->i_size; | |
825 | struct address_space *mapping = inode->i_mapping; | |
826 | struct ntfs_inode *ni = ntfs_i(inode); | |
827 | u64 valid = ni->i_valid; | |
828 | struct ntfs_sb_info *sbi = ni->mi.sbi; | |
829 | struct page *page, **pages = NULL; | |
830 | size_t written = 0; | |
831 | u8 frame_bits = NTFS_LZNT_CUNIT + sbi->cluster_bits; | |
832 | u32 frame_size = 1u << frame_bits; | |
833 | u32 pages_per_frame = frame_size >> PAGE_SHIFT; | |
834 | u32 ip, off; | |
835 | CLST frame; | |
836 | u64 frame_vbo; | |
837 | pgoff_t index; | |
838 | bool frame_uptodate; | |
839 | ||
840 | if (frame_size < PAGE_SIZE) { | |
841 | /* | |
842 | * frame_size == 8K if cluster 512 | |
843 | * frame_size == 64K if cluster 4096 | |
844 | */ | |
845 | ntfs_inode_warn(inode, "page size is bigger than frame size"); | |
846 | return -EOPNOTSUPP; | |
847 | } | |
848 | ||
345482bc | 849 | pages = kmalloc_array(pages_per_frame, sizeof(struct page *), GFP_NOFS); |
4342306f KK |
850 | if (!pages) |
851 | return -ENOMEM; | |
852 | ||
4342306f KK |
853 | err = file_remove_privs(file); |
854 | if (err) | |
855 | goto out; | |
856 | ||
857 | err = file_update_time(file); | |
858 | if (err) | |
859 | goto out; | |
860 | ||
e8b8e97f | 861 | /* Zero range [valid : pos). */ |
4342306f KK |
862 | while (valid < pos) { |
863 | CLST lcn, clen; | |
864 | ||
865 | frame = valid >> frame_bits; | |
866 | frame_vbo = valid & ~(frame_size - 1); | |
867 | off = valid & (frame_size - 1); | |
868 | ||
c380b52f KK |
869 | err = attr_data_get_block(ni, frame << NTFS_LZNT_CUNIT, 1, &lcn, |
870 | &clen, NULL, false); | |
4342306f KK |
871 | if (err) |
872 | goto out; | |
873 | ||
874 | if (lcn == SPARSE_LCN) { | |
875 | ni->i_valid = valid = | |
876 | frame_vbo + ((u64)clen << sbi->cluster_bits); | |
877 | continue; | |
878 | } | |
879 | ||
e8b8e97f | 880 | /* Load full frame. */ |
4342306f KK |
881 | err = ntfs_get_frame_pages(mapping, frame_vbo >> PAGE_SHIFT, |
882 | pages, pages_per_frame, | |
883 | &frame_uptodate); | |
884 | if (err) | |
885 | goto out; | |
886 | ||
887 | if (!frame_uptodate && off) { | |
888 | err = ni_read_frame(ni, frame_vbo, pages, | |
889 | pages_per_frame); | |
890 | if (err) { | |
891 | for (ip = 0; ip < pages_per_frame; ip++) { | |
892 | page = pages[ip]; | |
893 | unlock_page(page); | |
894 | put_page(page); | |
895 | } | |
896 | goto out; | |
897 | } | |
898 | } | |
899 | ||
900 | ip = off >> PAGE_SHIFT; | |
901 | off = offset_in_page(valid); | |
902 | for (; ip < pages_per_frame; ip++, off = 0) { | |
903 | page = pages[ip]; | |
904 | zero_user_segment(page, off, PAGE_SIZE); | |
905 | flush_dcache_page(page); | |
906 | SetPageUptodate(page); | |
907 | } | |
908 | ||
909 | ni_lock(ni); | |
910 | err = ni_write_frame(ni, pages, pages_per_frame); | |
911 | ni_unlock(ni); | |
912 | ||
913 | for (ip = 0; ip < pages_per_frame; ip++) { | |
914 | page = pages[ip]; | |
915 | SetPageUptodate(page); | |
916 | unlock_page(page); | |
917 | put_page(page); | |
918 | } | |
919 | ||
920 | if (err) | |
921 | goto out; | |
922 | ||
923 | ni->i_valid = valid = frame_vbo + frame_size; | |
924 | } | |
925 | ||
e8b8e97f | 926 | /* Copy user data [pos : pos + count). */ |
4342306f KK |
927 | while (count) { |
928 | size_t copied, bytes; | |
929 | ||
930 | off = pos & (frame_size - 1); | |
931 | bytes = frame_size - off; | |
932 | if (bytes > count) | |
933 | bytes = count; | |
934 | ||
4342306f KK |
935 | frame_vbo = pos & ~(frame_size - 1); |
936 | index = frame_vbo >> PAGE_SHIFT; | |
937 | ||
a6294593 | 938 | if (unlikely(fault_in_iov_iter_readable(from, bytes))) { |
4342306f KK |
939 | err = -EFAULT; |
940 | goto out; | |
941 | } | |
942 | ||
e8b8e97f | 943 | /* Load full frame. */ |
4342306f KK |
944 | err = ntfs_get_frame_pages(mapping, index, pages, |
945 | pages_per_frame, &frame_uptodate); | |
946 | if (err) | |
947 | goto out; | |
948 | ||
949 | if (!frame_uptodate) { | |
950 | loff_t to = pos + bytes; | |
951 | ||
952 | if (off || (to < i_size && (to & (frame_size - 1)))) { | |
953 | err = ni_read_frame(ni, frame_vbo, pages, | |
954 | pages_per_frame); | |
955 | if (err) { | |
956 | for (ip = 0; ip < pages_per_frame; | |
957 | ip++) { | |
958 | page = pages[ip]; | |
959 | unlock_page(page); | |
960 | put_page(page); | |
961 | } | |
962 | goto out; | |
963 | } | |
964 | } | |
965 | } | |
966 | ||
967 | WARN_ON(!bytes); | |
968 | copied = 0; | |
969 | ip = off >> PAGE_SHIFT; | |
970 | off = offset_in_page(pos); | |
971 | ||
e8b8e97f | 972 | /* Copy user data to pages. */ |
4342306f KK |
973 | for (;;) { |
974 | size_t cp, tail = PAGE_SIZE - off; | |
975 | ||
976 | page = pages[ip]; | |
977 | cp = copy_page_from_iter_atomic(page, off, | |
978 | min(tail, bytes), from); | |
979 | flush_dcache_page(page); | |
980 | ||
981 | copied += cp; | |
982 | bytes -= cp; | |
983 | if (!bytes || !cp) | |
984 | break; | |
985 | ||
986 | if (cp < tail) { | |
987 | off += cp; | |
988 | } else { | |
989 | ip++; | |
990 | off = 0; | |
991 | } | |
992 | } | |
993 | ||
994 | ni_lock(ni); | |
995 | err = ni_write_frame(ni, pages, pages_per_frame); | |
996 | ni_unlock(ni); | |
997 | ||
998 | for (ip = 0; ip < pages_per_frame; ip++) { | |
999 | page = pages[ip]; | |
1000 | ClearPageDirty(page); | |
1001 | SetPageUptodate(page); | |
1002 | unlock_page(page); | |
1003 | put_page(page); | |
1004 | } | |
1005 | ||
1006 | if (err) | |
1007 | goto out; | |
1008 | ||
1009 | /* | |
1010 | * We can loop for a long time in here. Be nice and allow | |
1011 | * us to schedule out to avoid softlocking if preempt | |
1012 | * is disabled. | |
1013 | */ | |
1014 | cond_resched(); | |
1015 | ||
1016 | pos += copied; | |
1017 | written += copied; | |
1018 | ||
1019 | count = iov_iter_count(from); | |
1020 | } | |
1021 | ||
1022 | out: | |
195c52bd | 1023 | kfree(pages); |
4342306f | 1024 | |
4342306f KK |
1025 | if (err < 0) |
1026 | return err; | |
1027 | ||
1028 | iocb->ki_pos += written; | |
1029 | if (iocb->ki_pos > ni->i_valid) | |
1030 | ni->i_valid = iocb->ki_pos; | |
1031 | ||
1032 | return written; | |
1033 | } | |
1034 | ||
1035 | /* | |
e8b8e97f | 1036 | * ntfs_file_write_iter - file_operations::write_iter |
4342306f KK |
1037 | */ |
1038 | static ssize_t ntfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) | |
1039 | { | |
1040 | struct file *file = iocb->ki_filp; | |
1041 | struct address_space *mapping = file->f_mapping; | |
1042 | struct inode *inode = mapping->host; | |
1043 | ssize_t ret; | |
1044 | struct ntfs_inode *ni = ntfs_i(inode); | |
1045 | ||
1046 | if (is_encrypted(ni)) { | |
1047 | ntfs_inode_warn(inode, "encrypted i/o not supported"); | |
1048 | return -EOPNOTSUPP; | |
1049 | } | |
1050 | ||
1051 | if (is_compressed(ni) && (iocb->ki_flags & IOCB_DIRECT)) { | |
1052 | ntfs_inode_warn(inode, "direct i/o + compressed not supported"); | |
1053 | return -EOPNOTSUPP; | |
1054 | } | |
1055 | ||
1056 | if (is_dedup(ni)) { | |
1057 | ntfs_inode_warn(inode, "write into deduplicated not supported"); | |
1058 | return -EOPNOTSUPP; | |
1059 | } | |
1060 | ||
1061 | if (!inode_trylock(inode)) { | |
1062 | if (iocb->ki_flags & IOCB_NOWAIT) | |
1063 | return -EAGAIN; | |
1064 | inode_lock(inode); | |
1065 | } | |
1066 | ||
1067 | ret = generic_write_checks(iocb, from); | |
1068 | if (ret <= 0) | |
1069 | goto out; | |
1070 | ||
1071 | if (WARN_ON(ni->ni_flags & NI_FLAG_COMPRESSED_MASK)) { | |
d3624466 | 1072 | /* Should never be here, see ntfs_file_open(). */ |
4342306f KK |
1073 | ret = -EOPNOTSUPP; |
1074 | goto out; | |
1075 | } | |
1076 | ||
1077 | ret = ntfs_extend(inode, iocb->ki_pos, ret, file); | |
1078 | if (ret) | |
1079 | goto out; | |
1080 | ||
96de65a9 | 1081 | ret = is_compressed(ni) ? ntfs_compress_write(iocb, from) : |
f0377761 | 1082 | __generic_file_write_iter(iocb, from); |
4342306f KK |
1083 | |
1084 | out: | |
1085 | inode_unlock(inode); | |
1086 | ||
1087 | if (ret > 0) | |
1088 | ret = generic_write_sync(iocb, ret); | |
1089 | ||
1090 | return ret; | |
1091 | } | |
1092 | ||
1093 | /* | |
e8b8e97f | 1094 | * ntfs_file_open - file_operations::open |
4342306f KK |
1095 | */ |
1096 | int ntfs_file_open(struct inode *inode, struct file *file) | |
1097 | { | |
1098 | struct ntfs_inode *ni = ntfs_i(inode); | |
1099 | ||
1100 | if (unlikely((is_compressed(ni) || is_encrypted(ni)) && | |
1101 | (file->f_flags & O_DIRECT))) { | |
1102 | return -EOPNOTSUPP; | |
1103 | } | |
1104 | ||
e8b8e97f | 1105 | /* Decompress "external compressed" file if opened for rw. */ |
4342306f KK |
1106 | if ((ni->ni_flags & NI_FLAG_COMPRESSED_MASK) && |
1107 | (file->f_flags & (O_WRONLY | O_RDWR | O_TRUNC))) { | |
1108 | #ifdef CONFIG_NTFS3_LZX_XPRESS | |
1109 | int err = ni_decompress_file(ni); | |
1110 | ||
1111 | if (err) | |
1112 | return err; | |
1113 | #else | |
1114 | ntfs_inode_warn( | |
1115 | inode, | |
1116 | "activate CONFIG_NTFS3_LZX_XPRESS to write external compressed files"); | |
1117 | return -EOPNOTSUPP; | |
1118 | #endif | |
1119 | } | |
1120 | ||
1121 | return generic_file_open(inode, file); | |
1122 | } | |
1123 | ||
1124 | /* | |
e8b8e97f | 1125 | * ntfs_file_release - file_operations::release |
4342306f KK |
1126 | */ |
1127 | static int ntfs_file_release(struct inode *inode, struct file *file) | |
1128 | { | |
1129 | struct ntfs_inode *ni = ntfs_i(inode); | |
1130 | struct ntfs_sb_info *sbi = ni->mi.sbi; | |
1131 | int err = 0; | |
1132 | ||
e8b8e97f | 1133 | /* If we are last writer on the inode, drop the block reservation. */ |
96de65a9 KK |
1134 | if (sbi->options->prealloc && |
1135 | ((file->f_mode & FMODE_WRITE) && | |
1136 | atomic_read(&inode->i_writecount) == 1)) { | |
4342306f KK |
1137 | ni_lock(ni); |
1138 | down_write(&ni->file.run_lock); | |
1139 | ||
1140 | err = attr_set_size(ni, ATTR_DATA, NULL, 0, &ni->file.run, | |
1141 | inode->i_size, &ni->i_valid, false, NULL); | |
1142 | ||
1143 | up_write(&ni->file.run_lock); | |
1144 | ni_unlock(ni); | |
1145 | } | |
1146 | return err; | |
1147 | } | |
1148 | ||
e8b8e97f KA |
1149 | /* |
1150 | * ntfs_fiemap - file_operations::fiemap | |
1151 | */ | |
4342306f KK |
1152 | int ntfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1153 | __u64 start, __u64 len) | |
1154 | { | |
1155 | int err; | |
1156 | struct ntfs_inode *ni = ntfs_i(inode); | |
1157 | ||
d4e8e135 KA |
1158 | err = fiemap_prep(inode, fieinfo, start, &len, ~FIEMAP_FLAG_XATTR); |
1159 | if (err) | |
1160 | return err; | |
4342306f KK |
1161 | |
1162 | ni_lock(ni); | |
1163 | ||
1164 | err = ni_fiemap(ni, fieinfo, start, len); | |
1165 | ||
1166 | ni_unlock(ni); | |
1167 | ||
1168 | return err; | |
1169 | } | |
1170 | ||
1171 | // clang-format off | |
1172 | const struct inode_operations ntfs_file_inode_operations = { | |
1173 | .getattr = ntfs_getattr, | |
1174 | .setattr = ntfs3_setattr, | |
1175 | .listxattr = ntfs_listxattr, | |
75c5e0c9 | 1176 | .get_acl = ntfs_get_acl, |
4342306f KK |
1177 | .set_acl = ntfs_set_acl, |
1178 | .fiemap = ntfs_fiemap, | |
1179 | }; | |
1180 | ||
1181 | const struct file_operations ntfs_file_operations = { | |
1182 | .llseek = generic_file_llseek, | |
1183 | .read_iter = ntfs_file_read_iter, | |
1184 | .write_iter = ntfs_file_write_iter, | |
1185 | .unlocked_ioctl = ntfs_ioctl, | |
1186 | #ifdef CONFIG_COMPAT | |
1187 | .compat_ioctl = ntfs_compat_ioctl, | |
1188 | #endif | |
51494398 | 1189 | .splice_read = ntfs_file_splice_read, |
4342306f KK |
1190 | .mmap = ntfs_file_mmap, |
1191 | .open = ntfs_file_open, | |
1192 | .fsync = generic_file_fsync, | |
1193 | .splice_write = iter_file_splice_write, | |
1194 | .fallocate = ntfs_fallocate, | |
1195 | .release = ntfs_file_release, | |
1196 | }; | |
1197 | // clang-format on |