Commit | Line | Data |
---|---|---|
d1d04ef8 MS |
1 | /* |
2 | * Copyright (C) 2017 Red Hat, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License version 2 as published by | |
6 | * the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #include <linux/cred.h> | |
10 | #include <linux/file.h> | |
dab5ca8f | 11 | #include <linux/mount.h> |
d1d04ef8 | 12 | #include <linux/xattr.h> |
16914e6f | 13 | #include <linux/uio.h> |
98487de3 | 14 | #include <linux/uaccess.h> |
d1d04ef8 MS |
15 | #include "overlayfs.h" |
16 | ||
8c444d2a VG |
17 | static char ovl_whatisit(struct inode *inode, struct inode *realinode) |
18 | { | |
19 | if (realinode != ovl_inode_upper(inode)) | |
20 | return 'l'; | |
21 | if (ovl_has_upperdata(inode)) | |
22 | return 'u'; | |
23 | else | |
24 | return 'm'; | |
25 | } | |
26 | ||
27 | static struct file *ovl_open_realfile(const struct file *file, | |
28 | struct inode *realinode) | |
d1d04ef8 MS |
29 | { |
30 | struct inode *inode = file_inode(file); | |
d1d04ef8 MS |
31 | struct file *realfile; |
32 | const struct cred *old_cred; | |
d9899030 | 33 | int flags = file->f_flags | O_NOATIME | FMODE_NONOTIFY; |
d1d04ef8 MS |
34 | |
35 | old_cred = ovl_override_creds(inode->i_sb); | |
d9899030 AG |
36 | realfile = open_with_fake_path(&file->f_path, flags, realinode, |
37 | current_cred()); | |
d1d04ef8 MS |
38 | revert_creds(old_cred); |
39 | ||
40 | pr_debug("open(%p[%pD2/%c], 0%o) -> (%p, 0%o)\n", | |
8c444d2a | 41 | file, file, ovl_whatisit(inode, realinode), file->f_flags, |
d1d04ef8 MS |
42 | realfile, IS_ERR(realfile) ? 0 : realfile->f_flags); |
43 | ||
44 | return realfile; | |
45 | } | |
46 | ||
2ef66b8a MS |
47 | #define OVL_SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT) |
48 | ||
49 | static int ovl_change_flags(struct file *file, unsigned int flags) | |
50 | { | |
51 | struct inode *inode = file_inode(file); | |
52 | int err; | |
53 | ||
54 | /* No atime modificaton on underlying */ | |
d9899030 | 55 | flags |= O_NOATIME | FMODE_NONOTIFY; |
2ef66b8a MS |
56 | |
57 | /* If some flag changed that cannot be changed then something's amiss */ | |
58 | if (WARN_ON((file->f_flags ^ flags) & ~OVL_SETFL_MASK)) | |
59 | return -EIO; | |
60 | ||
61 | flags &= OVL_SETFL_MASK; | |
62 | ||
63 | if (((flags ^ file->f_flags) & O_APPEND) && IS_APPEND(inode)) | |
64 | return -EPERM; | |
65 | ||
66 | if (flags & O_DIRECT) { | |
67 | if (!file->f_mapping->a_ops || | |
68 | !file->f_mapping->a_ops->direct_IO) | |
69 | return -EINVAL; | |
70 | } | |
71 | ||
72 | if (file->f_op->check_flags) { | |
73 | err = file->f_op->check_flags(flags); | |
74 | if (err) | |
75 | return err; | |
76 | } | |
77 | ||
78 | spin_lock(&file->f_lock); | |
79 | file->f_flags = (file->f_flags & ~OVL_SETFL_MASK) | flags; | |
80 | spin_unlock(&file->f_lock); | |
81 | ||
82 | return 0; | |
83 | } | |
84 | ||
8c444d2a VG |
85 | static int ovl_real_fdget_meta(const struct file *file, struct fd *real, |
86 | bool allow_meta) | |
2ef66b8a MS |
87 | { |
88 | struct inode *inode = file_inode(file); | |
8c444d2a | 89 | struct inode *realinode; |
2ef66b8a MS |
90 | |
91 | real->flags = 0; | |
92 | real->file = file->private_data; | |
93 | ||
8c444d2a VG |
94 | if (allow_meta) |
95 | realinode = ovl_inode_real(inode); | |
96 | else | |
97 | realinode = ovl_inode_realdata(inode); | |
98 | ||
2ef66b8a | 99 | /* Has it been copied up since we'd opened it? */ |
8c444d2a | 100 | if (unlikely(file_inode(real->file) != realinode)) { |
2ef66b8a | 101 | real->flags = FDPUT_FPUT; |
8c444d2a | 102 | real->file = ovl_open_realfile(file, realinode); |
2ef66b8a MS |
103 | |
104 | return PTR_ERR_OR_ZERO(real->file); | |
105 | } | |
106 | ||
107 | /* Did the flags change since open? */ | |
108 | if (unlikely((file->f_flags ^ real->file->f_flags) & ~O_NOATIME)) | |
109 | return ovl_change_flags(real->file, file->f_flags); | |
110 | ||
111 | return 0; | |
112 | } | |
113 | ||
8c444d2a VG |
114 | static int ovl_real_fdget(const struct file *file, struct fd *real) |
115 | { | |
116 | return ovl_real_fdget_meta(file, real, false); | |
117 | } | |
118 | ||
d1d04ef8 MS |
119 | static int ovl_open(struct inode *inode, struct file *file) |
120 | { | |
d1d04ef8 MS |
121 | struct file *realfile; |
122 | int err; | |
123 | ||
3428030d | 124 | err = ovl_maybe_copy_up(file_dentry(file), file->f_flags); |
d1d04ef8 MS |
125 | if (err) |
126 | return err; | |
127 | ||
128 | /* No longer need these flags, so don't pass them on to underlying fs */ | |
129 | file->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC); | |
130 | ||
8c444d2a | 131 | realfile = ovl_open_realfile(file, ovl_inode_realdata(inode)); |
d1d04ef8 MS |
132 | if (IS_ERR(realfile)) |
133 | return PTR_ERR(realfile); | |
134 | ||
135 | file->private_data = realfile; | |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
140 | static int ovl_release(struct inode *inode, struct file *file) | |
141 | { | |
142 | fput(file->private_data); | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | static loff_t ovl_llseek(struct file *file, loff_t offset, int whence) | |
148 | { | |
9e46b840 AG |
149 | struct inode *inode = file_inode(file); |
150 | struct fd real; | |
151 | const struct cred *old_cred; | |
152 | ssize_t ret; | |
153 | ||
154 | /* | |
155 | * The two special cases below do not need to involve real fs, | |
156 | * so we can optimizing concurrent callers. | |
157 | */ | |
158 | if (offset == 0) { | |
159 | if (whence == SEEK_CUR) | |
160 | return file->f_pos; | |
161 | ||
162 | if (whence == SEEK_SET) | |
163 | return vfs_setpos(file, 0, 0); | |
164 | } | |
165 | ||
166 | ret = ovl_real_fdget(file, &real); | |
167 | if (ret) | |
168 | return ret; | |
169 | ||
170 | /* | |
171 | * Overlay file f_pos is the master copy that is preserved | |
172 | * through copy up and modified on read/write, but only real | |
173 | * fs knows how to SEEK_HOLE/SEEK_DATA and real fs may impose | |
174 | * limitations that are more strict than ->s_maxbytes for specific | |
175 | * files, so we use the real file to perform seeks. | |
176 | */ | |
177 | inode_lock(inode); | |
178 | real.file->f_pos = file->f_pos; | |
179 | ||
180 | old_cred = ovl_override_creds(inode->i_sb); | |
181 | ret = vfs_llseek(real.file, offset, whence); | |
182 | revert_creds(old_cred); | |
183 | ||
184 | file->f_pos = real.file->f_pos; | |
185 | inode_unlock(inode); | |
186 | ||
187 | fdput(real); | |
d1d04ef8 | 188 | |
9e46b840 | 189 | return ret; |
d1d04ef8 MS |
190 | } |
191 | ||
16914e6f MS |
192 | static void ovl_file_accessed(struct file *file) |
193 | { | |
194 | struct inode *inode, *upperinode; | |
195 | ||
196 | if (file->f_flags & O_NOATIME) | |
197 | return; | |
198 | ||
199 | inode = file_inode(file); | |
200 | upperinode = ovl_inode_upper(inode); | |
201 | ||
202 | if (!upperinode) | |
203 | return; | |
204 | ||
205 | if ((!timespec64_equal(&inode->i_mtime, &upperinode->i_mtime) || | |
206 | !timespec64_equal(&inode->i_ctime, &upperinode->i_ctime))) { | |
207 | inode->i_mtime = upperinode->i_mtime; | |
208 | inode->i_ctime = upperinode->i_ctime; | |
209 | } | |
210 | ||
211 | touch_atime(&file->f_path); | |
212 | } | |
213 | ||
214 | static rwf_t ovl_iocb_to_rwf(struct kiocb *iocb) | |
215 | { | |
216 | int ifl = iocb->ki_flags; | |
217 | rwf_t flags = 0; | |
218 | ||
219 | if (ifl & IOCB_NOWAIT) | |
220 | flags |= RWF_NOWAIT; | |
221 | if (ifl & IOCB_HIPRI) | |
222 | flags |= RWF_HIPRI; | |
223 | if (ifl & IOCB_DSYNC) | |
224 | flags |= RWF_DSYNC; | |
225 | if (ifl & IOCB_SYNC) | |
226 | flags |= RWF_SYNC; | |
227 | ||
228 | return flags; | |
229 | } | |
230 | ||
231 | static ssize_t ovl_read_iter(struct kiocb *iocb, struct iov_iter *iter) | |
232 | { | |
233 | struct file *file = iocb->ki_filp; | |
234 | struct fd real; | |
235 | const struct cred *old_cred; | |
236 | ssize_t ret; | |
237 | ||
238 | if (!iov_iter_count(iter)) | |
239 | return 0; | |
240 | ||
241 | ret = ovl_real_fdget(file, &real); | |
242 | if (ret) | |
243 | return ret; | |
244 | ||
245 | old_cred = ovl_override_creds(file_inode(file)->i_sb); | |
246 | ret = vfs_iter_read(real.file, iter, &iocb->ki_pos, | |
247 | ovl_iocb_to_rwf(iocb)); | |
248 | revert_creds(old_cred); | |
249 | ||
250 | ovl_file_accessed(file); | |
251 | ||
252 | fdput(real); | |
253 | ||
254 | return ret; | |
255 | } | |
256 | ||
2a92e07e MS |
257 | static ssize_t ovl_write_iter(struct kiocb *iocb, struct iov_iter *iter) |
258 | { | |
259 | struct file *file = iocb->ki_filp; | |
260 | struct inode *inode = file_inode(file); | |
261 | struct fd real; | |
262 | const struct cred *old_cred; | |
263 | ssize_t ret; | |
264 | ||
265 | if (!iov_iter_count(iter)) | |
266 | return 0; | |
267 | ||
268 | inode_lock(inode); | |
269 | /* Update mode */ | |
270 | ovl_copyattr(ovl_inode_real(inode), inode); | |
271 | ret = file_remove_privs(file); | |
272 | if (ret) | |
273 | goto out_unlock; | |
274 | ||
275 | ret = ovl_real_fdget(file, &real); | |
276 | if (ret) | |
277 | goto out_unlock; | |
278 | ||
279 | old_cred = ovl_override_creds(file_inode(file)->i_sb); | |
898cc19d | 280 | file_start_write(real.file); |
2a92e07e MS |
281 | ret = vfs_iter_write(real.file, iter, &iocb->ki_pos, |
282 | ovl_iocb_to_rwf(iocb)); | |
898cc19d | 283 | file_end_write(real.file); |
2a92e07e MS |
284 | revert_creds(old_cred); |
285 | ||
286 | /* Update size */ | |
287 | ovl_copyattr(ovl_inode_real(inode), inode); | |
288 | ||
289 | fdput(real); | |
290 | ||
291 | out_unlock: | |
292 | inode_unlock(inode); | |
293 | ||
294 | return ret; | |
295 | } | |
296 | ||
de30dfd6 MS |
297 | static int ovl_fsync(struct file *file, loff_t start, loff_t end, int datasync) |
298 | { | |
299 | struct fd real; | |
300 | const struct cred *old_cred; | |
301 | int ret; | |
302 | ||
8c444d2a | 303 | ret = ovl_real_fdget_meta(file, &real, !datasync); |
de30dfd6 MS |
304 | if (ret) |
305 | return ret; | |
306 | ||
307 | /* Don't sync lower file for fear of receiving EROFS error */ | |
308 | if (file_inode(real.file) == ovl_inode_upper(file_inode(file))) { | |
309 | old_cred = ovl_override_creds(file_inode(file)->i_sb); | |
310 | ret = vfs_fsync_range(real.file, start, end, datasync); | |
311 | revert_creds(old_cred); | |
312 | } | |
313 | ||
314 | fdput(real); | |
315 | ||
316 | return ret; | |
317 | } | |
318 | ||
2f502839 MS |
319 | static int ovl_mmap(struct file *file, struct vm_area_struct *vma) |
320 | { | |
321 | struct file *realfile = file->private_data; | |
322 | const struct cred *old_cred; | |
323 | int ret; | |
324 | ||
325 | if (!realfile->f_op->mmap) | |
326 | return -ENODEV; | |
327 | ||
328 | if (WARN_ON(file != vma->vm_file)) | |
329 | return -EIO; | |
330 | ||
331 | vma->vm_file = get_file(realfile); | |
332 | ||
333 | old_cred = ovl_override_creds(file_inode(file)->i_sb); | |
334 | ret = call_mmap(vma->vm_file, vma); | |
335 | revert_creds(old_cred); | |
336 | ||
337 | if (ret) { | |
338 | /* Drop reference count from new vm_file value */ | |
339 | fput(realfile); | |
340 | } else { | |
341 | /* Drop reference count from previous vm_file value */ | |
342 | fput(file); | |
343 | } | |
344 | ||
345 | ovl_file_accessed(file); | |
346 | ||
347 | return ret; | |
348 | } | |
349 | ||
aab8848c MS |
350 | static long ovl_fallocate(struct file *file, int mode, loff_t offset, loff_t len) |
351 | { | |
352 | struct inode *inode = file_inode(file); | |
353 | struct fd real; | |
354 | const struct cred *old_cred; | |
355 | int ret; | |
356 | ||
357 | ret = ovl_real_fdget(file, &real); | |
358 | if (ret) | |
359 | return ret; | |
360 | ||
361 | old_cred = ovl_override_creds(file_inode(file)->i_sb); | |
362 | ret = vfs_fallocate(real.file, mode, offset, len); | |
363 | revert_creds(old_cred); | |
364 | ||
365 | /* Update size */ | |
366 | ovl_copyattr(ovl_inode_real(inode), inode); | |
367 | ||
368 | fdput(real); | |
369 | ||
370 | return ret; | |
371 | } | |
372 | ||
b833a366 AG |
373 | static int ovl_fadvise(struct file *file, loff_t offset, loff_t len, int advice) |
374 | { | |
375 | struct fd real; | |
376 | const struct cred *old_cred; | |
377 | int ret; | |
378 | ||
379 | ret = ovl_real_fdget(file, &real); | |
380 | if (ret) | |
381 | return ret; | |
382 | ||
383 | old_cred = ovl_override_creds(file_inode(file)->i_sb); | |
384 | ret = vfs_fadvise(real.file, offset, len, advice); | |
385 | revert_creds(old_cred); | |
386 | ||
387 | fdput(real); | |
388 | ||
389 | return ret; | |
390 | } | |
391 | ||
dab5ca8f MS |
392 | static long ovl_real_ioctl(struct file *file, unsigned int cmd, |
393 | unsigned long arg) | |
394 | { | |
395 | struct fd real; | |
396 | const struct cred *old_cred; | |
397 | long ret; | |
398 | ||
399 | ret = ovl_real_fdget(file, &real); | |
400 | if (ret) | |
401 | return ret; | |
402 | ||
403 | old_cred = ovl_override_creds(file_inode(file)->i_sb); | |
404 | ret = vfs_ioctl(real.file, cmd, arg); | |
405 | revert_creds(old_cred); | |
406 | ||
407 | fdput(real); | |
408 | ||
409 | return ret; | |
410 | } | |
411 | ||
98487de3 JX |
412 | static unsigned int ovl_get_inode_flags(struct inode *inode) |
413 | { | |
414 | unsigned int flags = READ_ONCE(inode->i_flags); | |
415 | unsigned int ovl_iflags = 0; | |
416 | ||
417 | if (flags & S_SYNC) | |
418 | ovl_iflags |= FS_SYNC_FL; | |
419 | if (flags & S_APPEND) | |
420 | ovl_iflags |= FS_APPEND_FL; | |
421 | if (flags & S_IMMUTABLE) | |
422 | ovl_iflags |= FS_IMMUTABLE_FL; | |
423 | if (flags & S_NOATIME) | |
424 | ovl_iflags |= FS_NOATIME_FL; | |
425 | ||
426 | return ovl_iflags; | |
427 | } | |
428 | ||
429 | static long ovl_ioctl_set_flags(struct file *file, unsigned long arg) | |
dab5ca8f MS |
430 | { |
431 | long ret; | |
432 | struct inode *inode = file_inode(file); | |
98487de3 JX |
433 | unsigned int flags; |
434 | unsigned int old_flags; | |
435 | ||
436 | if (!inode_owner_or_capable(inode)) | |
437 | return -EACCES; | |
438 | ||
439 | if (get_user(flags, (int __user *) arg)) | |
440 | return -EFAULT; | |
441 | ||
442 | ret = mnt_want_write_file(file); | |
443 | if (ret) | |
444 | return ret; | |
445 | ||
446 | inode_lock(inode); | |
447 | ||
448 | /* Check the capability before cred override */ | |
449 | ret = -EPERM; | |
450 | old_flags = ovl_get_inode_flags(inode); | |
451 | if (((flags ^ old_flags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) && | |
452 | !capable(CAP_LINUX_IMMUTABLE)) | |
453 | goto unlock; | |
454 | ||
455 | ret = ovl_maybe_copy_up(file_dentry(file), O_WRONLY); | |
456 | if (ret) | |
457 | goto unlock; | |
458 | ||
459 | ret = ovl_real_ioctl(file, FS_IOC_SETFLAGS, arg); | |
460 | ||
461 | ovl_copyflags(ovl_inode_real(inode), inode); | |
462 | unlock: | |
463 | inode_unlock(inode); | |
464 | ||
465 | mnt_drop_write_file(file); | |
466 | ||
467 | return ret; | |
468 | ||
469 | } | |
470 | ||
471 | static long ovl_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
472 | { | |
473 | long ret; | |
dab5ca8f MS |
474 | |
475 | switch (cmd) { | |
476 | case FS_IOC_GETFLAGS: | |
477 | ret = ovl_real_ioctl(file, cmd, arg); | |
478 | break; | |
479 | ||
480 | case FS_IOC_SETFLAGS: | |
98487de3 | 481 | ret = ovl_ioctl_set_flags(file, arg); |
dab5ca8f MS |
482 | break; |
483 | ||
484 | default: | |
485 | ret = -ENOTTY; | |
486 | } | |
487 | ||
488 | return ret; | |
489 | } | |
490 | ||
491 | static long ovl_compat_ioctl(struct file *file, unsigned int cmd, | |
492 | unsigned long arg) | |
493 | { | |
494 | switch (cmd) { | |
495 | case FS_IOC32_GETFLAGS: | |
496 | cmd = FS_IOC_GETFLAGS; | |
497 | break; | |
498 | ||
499 | case FS_IOC32_SETFLAGS: | |
500 | cmd = FS_IOC_SETFLAGS; | |
501 | break; | |
502 | ||
503 | default: | |
504 | return -ENOIOCTLCMD; | |
505 | } | |
506 | ||
507 | return ovl_ioctl(file, cmd, arg); | |
508 | } | |
509 | ||
8ede2055 MS |
510 | enum ovl_copyop { |
511 | OVL_COPY, | |
512 | OVL_CLONE, | |
513 | OVL_DEDUPE, | |
514 | }; | |
515 | ||
42ec3d4c | 516 | static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in, |
8ede2055 | 517 | struct file *file_out, loff_t pos_out, |
42ec3d4c | 518 | loff_t len, unsigned int flags, enum ovl_copyop op) |
8ede2055 MS |
519 | { |
520 | struct inode *inode_out = file_inode(file_out); | |
521 | struct fd real_in, real_out; | |
522 | const struct cred *old_cred; | |
42ec3d4c | 523 | loff_t ret; |
8ede2055 MS |
524 | |
525 | ret = ovl_real_fdget(file_out, &real_out); | |
526 | if (ret) | |
527 | return ret; | |
528 | ||
529 | ret = ovl_real_fdget(file_in, &real_in); | |
530 | if (ret) { | |
531 | fdput(real_out); | |
532 | return ret; | |
533 | } | |
534 | ||
535 | old_cred = ovl_override_creds(file_inode(file_out)->i_sb); | |
536 | switch (op) { | |
537 | case OVL_COPY: | |
538 | ret = vfs_copy_file_range(real_in.file, pos_in, | |
539 | real_out.file, pos_out, len, flags); | |
540 | break; | |
541 | ||
542 | case OVL_CLONE: | |
a725356b | 543 | ret = vfs_clone_file_range(real_in.file, pos_in, |
452ce659 | 544 | real_out.file, pos_out, len, flags); |
8ede2055 MS |
545 | break; |
546 | ||
547 | case OVL_DEDUPE: | |
548 | ret = vfs_dedupe_file_range_one(real_in.file, pos_in, | |
df365836 DW |
549 | real_out.file, pos_out, len, |
550 | flags); | |
8ede2055 MS |
551 | break; |
552 | } | |
553 | revert_creds(old_cred); | |
554 | ||
555 | /* Update size */ | |
556 | ovl_copyattr(ovl_inode_real(inode_out), inode_out); | |
557 | ||
558 | fdput(real_in); | |
559 | fdput(real_out); | |
560 | ||
561 | return ret; | |
562 | } | |
563 | ||
564 | static ssize_t ovl_copy_file_range(struct file *file_in, loff_t pos_in, | |
565 | struct file *file_out, loff_t pos_out, | |
566 | size_t len, unsigned int flags) | |
567 | { | |
568 | return ovl_copyfile(file_in, pos_in, file_out, pos_out, len, flags, | |
569 | OVL_COPY); | |
570 | } | |
571 | ||
42ec3d4c DW |
572 | static loff_t ovl_remap_file_range(struct file *file_in, loff_t pos_in, |
573 | struct file *file_out, loff_t pos_out, | |
574 | loff_t len, unsigned int remap_flags) | |
8ede2055 | 575 | { |
2e5dfc99 DW |
576 | enum ovl_copyop op; |
577 | ||
578 | if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY)) | |
579 | return -EINVAL; | |
580 | ||
581 | if (remap_flags & REMAP_FILE_DEDUP) | |
582 | op = OVL_DEDUPE; | |
583 | else | |
584 | op = OVL_CLONE; | |
8ede2055 | 585 | |
8ede2055 MS |
586 | /* |
587 | * Don't copy up because of a dedupe request, this wouldn't make sense | |
588 | * most of the time (data would be duplicated instead of deduplicated). | |
589 | */ | |
2e5dfc99 DW |
590 | if (op == OVL_DEDUPE && |
591 | (!ovl_inode_upper(file_inode(file_in)) || | |
592 | !ovl_inode_upper(file_inode(file_out)))) | |
8ede2055 MS |
593 | return -EPERM; |
594 | ||
452ce659 DW |
595 | return ovl_copyfile(file_in, pos_in, file_out, pos_out, len, |
596 | remap_flags, op); | |
8ede2055 MS |
597 | } |
598 | ||
d1d04ef8 MS |
599 | const struct file_operations ovl_file_operations = { |
600 | .open = ovl_open, | |
601 | .release = ovl_release, | |
602 | .llseek = ovl_llseek, | |
16914e6f | 603 | .read_iter = ovl_read_iter, |
2a92e07e | 604 | .write_iter = ovl_write_iter, |
de30dfd6 | 605 | .fsync = ovl_fsync, |
2f502839 | 606 | .mmap = ovl_mmap, |
aab8848c | 607 | .fallocate = ovl_fallocate, |
b833a366 | 608 | .fadvise = ovl_fadvise, |
dab5ca8f MS |
609 | .unlocked_ioctl = ovl_ioctl, |
610 | .compat_ioctl = ovl_compat_ioctl, | |
8ede2055 MS |
611 | |
612 | .copy_file_range = ovl_copy_file_range, | |
2e5dfc99 | 613 | .remap_file_range = ovl_remap_file_range, |
d1d04ef8 | 614 | }; |