libfuse

fuse_kernel.h
1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
2 /*
3 This file defines the kernel interface of FUSE
4 Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
5
6 This program can be distributed under the terms of the GNU GPL.
7 See the file COPYING.
8
9 This -- and only this -- header file may also be distributed under
10 the terms of the BSD Licence as follows:
11
12 Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved.
13
14 Redistribution and use in source and binary forms, with or without
15 modification, are permitted provided that the following conditions
16 are met:
17 1. Redistributions of source code must retain the above copyright
18 notice, this list of conditions and the following disclaimer.
19 2. Redistributions in binary form must reproduce the above copyright
20 notice, this list of conditions and the following disclaimer in the
21 documentation and/or other materials provided with the distribution.
22
23 THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
27 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 SUCH DAMAGE.
34 */
35
36 /*
37 * This file defines the kernel interface of FUSE
38 *
39 * Protocol changelog:
40 *
41 * 7.9:
42 * - new fuse_getattr_in input argument of GETATTR
43 * - add lk_flags in fuse_lk_in
44 * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
45 * - add blksize field to fuse_attr
46 * - add file flags field to fuse_read_in and fuse_write_in
47 * - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in
48 *
49 * 7.10
50 * - add nonseekable open flag
51 *
52 * 7.11
53 * - add IOCTL message
54 * - add unsolicited notification support
55 * - add POLL message and NOTIFY_POLL notification
56 *
57 * 7.12
58 * - add umask flag to input argument of create, mknod and mkdir
59 * - add notification messages for invalidation of inodes and
60 * directory entries
61 *
62 * 7.13
63 * - make max number of background requests and congestion threshold
64 * tunables
65 *
66 * 7.14
67 * - add splice support to fuse device
68 *
69 * 7.15
70 * - add store notify
71 * - add retrieve notify
72 *
73 * 7.16
74 * - add BATCH_FORGET request
75 * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
76 * fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
77 * - add FUSE_IOCTL_32BIT flag
78 *
79 * 7.17
80 * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
81 *
82 * 7.18
83 * - add FUSE_IOCTL_DIR flag
84 * - add FUSE_NOTIFY_DELETE
85 *
86 * 7.19
87 * - add FUSE_FALLOCATE
88 *
89 * 7.20
90 * - add FUSE_AUTO_INVAL_DATA
91 *
92 * 7.21
93 * - add FUSE_READDIRPLUS
94 * - send the requested events in POLL request
95 *
96 * 7.22
97 * - add FUSE_ASYNC_DIO
98 *
99 * 7.23
100 * - add FUSE_WRITEBACK_CACHE
101 * - add time_gran to fuse_init_out
102 * - add reserved space to fuse_init_out
103 * - add FATTR_CTIME
104 * - add ctime and ctimensec to fuse_setattr_in
105 * - add FUSE_RENAME2 request
106 * - add FUSE_NO_OPEN_SUPPORT flag
107 *
108 * 7.24
109 * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support
110 *
111 * 7.25
112 * - add FUSE_PARALLEL_DIROPS
113 *
114 * 7.26
115 * - add FUSE_HANDLE_KILLPRIV
116 * - add FUSE_POSIX_ACL
117 *
118 * 7.27
119 * - add FUSE_ABORT_ERROR
120 *
121 * 7.28
122 * - add FUSE_COPY_FILE_RANGE
123 * - add FOPEN_CACHE_DIR
124 * - add FUSE_MAX_PAGES, add max_pages to init_out
125 * - add FUSE_CACHE_SYMLINKS
126 *
127 * 7.29
128 * - add FUSE_NO_OPENDIR_SUPPORT flag
129 *
130 * 7.30
131 * - add FUSE_EXPLICIT_INVAL_DATA
132 * - add FUSE_IOCTL_COMPAT_X32
133 *
134 * 7.31
135 * - add FUSE_WRITE_KILL_PRIV flag
136 */
137
138 #ifndef _LINUX_FUSE_H
139 #define _LINUX_FUSE_H
140
141 #ifdef __KERNEL__
142 #include <linux/types.h>
143 #else
144 #include <stdint.h>
145 #endif
146
147 /*
148 * Version negotiation:
149 *
150 * Both the kernel and userspace send the version they support in the
151 * INIT request and reply respectively.
152 *
153 * If the major versions match then both shall use the smallest
154 * of the two minor versions for communication.
155 *
156 * If the kernel supports a larger major version, then userspace shall
157 * reply with the major version it supports, ignore the rest of the
158 * INIT message and expect a new INIT message from the kernel with a
159 * matching major version.
160 *
161 * If the library supports a larger major version, then it shall fall
162 * back to the major protocol version sent by the kernel for
163 * communication and reply with that major version (and an arbitrary
164 * supported minor version).
165 */
166
168 #define FUSE_KERNEL_VERSION 7
169
171 #define FUSE_KERNEL_MINOR_VERSION 31
172
174 #define FUSE_ROOT_ID 1
175
176 /* Make sure all structures are padded to 64bit boundary, so 32bit
177 userspace works under 64bit kernels */
178
179 struct fuse_attr {
180 uint64_t ino;
181 uint64_t size;
182 uint64_t blocks;
183 uint64_t atime;
184 uint64_t mtime;
185 uint64_t ctime;
186 uint32_t atimensec;
187 uint32_t mtimensec;
188 uint32_t ctimensec;
189 uint32_t mode;
190 uint32_t nlink;
191 uint32_t uid;
192 uint32_t gid;
193 uint32_t rdev;
194 uint32_t blksize;
195 uint32_t padding;
196 };
197
198 struct fuse_kstatfs {
199 uint64_t blocks;
200 uint64_t bfree;
201 uint64_t bavail;
202 uint64_t files;
203 uint64_t ffree;
204 uint32_t bsize;
205 uint32_t namelen;
206 uint32_t frsize;
207 uint32_t padding;
208 uint32_t spare[6];
209 };
210
211 struct fuse_file_lock {
212 uint64_t start;
213 uint64_t end;
214 uint32_t type;
215 uint32_t pid; /* tgid */
216 };
217
221 #define FATTR_MODE (1 << 0)
222 #define FATTR_UID (1 << 1)
223 #define FATTR_GID (1 << 2)
224 #define FATTR_SIZE (1 << 3)
225 #define FATTR_ATIME (1 << 4)
226 #define FATTR_MTIME (1 << 5)
227 #define FATTR_FH (1 << 6)
228 #define FATTR_ATIME_NOW (1 << 7)
229 #define FATTR_MTIME_NOW (1 << 8)
230 #define FATTR_LOCKOWNER (1 << 9)
231 #define FATTR_CTIME (1 << 10)
232
243 #define FOPEN_DIRECT_IO (1 << 0)
244 #define FOPEN_KEEP_CACHE (1 << 1)
245 #define FOPEN_NONSEEKABLE (1 << 2)
246 #define FOPEN_CACHE_DIR (1 << 3)
247 #define FOPEN_STREAM (1 << 4)
248 #define FOPEN_NOFLUSH (1 << 5)
249
280 #define FUSE_ASYNC_READ (1 << 0)
281 #define FUSE_POSIX_LOCKS (1 << 1)
282 #define FUSE_FILE_OPS (1 << 2)
283 #define FUSE_ATOMIC_O_TRUNC (1 << 3)
284 #define FUSE_EXPORT_SUPPORT (1 << 4)
285 #define FUSE_BIG_WRITES (1 << 5)
286 #define FUSE_DONT_MASK (1 << 6)
287 #define FUSE_SPLICE_WRITE (1 << 7)
288 #define FUSE_SPLICE_MOVE (1 << 8)
289 #define FUSE_SPLICE_READ (1 << 9)
290 #define FUSE_FLOCK_LOCKS (1 << 10)
291 #define FUSE_HAS_IOCTL_DIR (1 << 11)
292 #define FUSE_AUTO_INVAL_DATA (1 << 12)
293 #define FUSE_DO_READDIRPLUS (1 << 13)
294 #define FUSE_READDIRPLUS_AUTO (1 << 14)
295 #define FUSE_ASYNC_DIO (1 << 15)
296 #define FUSE_WRITEBACK_CACHE (1 << 16)
297 #define FUSE_NO_OPEN_SUPPORT (1 << 17)
298 #define FUSE_PARALLEL_DIROPS (1 << 18)
299 #define FUSE_HANDLE_KILLPRIV (1 << 19)
300 #define FUSE_POSIX_ACL (1 << 20)
301 #define FUSE_ABORT_ERROR (1 << 21)
302 #define FUSE_MAX_PAGES (1 << 22)
303 #define FUSE_CACHE_SYMLINKS (1 << 23)
304 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
305 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
306 #define FUSE_MAP_ALIGNMENT (1 << 26)
307 #define FUSE_SUBMOUNTS (1 << 27)
308 #define FUSE_HANDLE_KILLPRIV_V2 (1 << 28)
309 #define FUSE_SETXATTR_EXT (1 << 29)
310 #define FUSE_INIT_EXT (1 << 30)
311 #define FUSE_INIT_RESERVED (1 << 31)
312 /* bits 32..63 get shifted down 32 bits into the flags2 field */
313 #define FUSE_SECURITY_CTX (1ULL << 32)
314 #define FUSE_HAS_INODE_DAX (1ULL << 33)
315
321 #define CUSE_UNRESTRICTED_IOCTL (1 << 0)
322
326 #define FUSE_RELEASE_FLUSH (1 << 0)
327 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
328
332 #define FUSE_GETATTR_FH (1 << 0)
333
337 #define FUSE_LK_FLOCK (1 << 0)
338
346 #define FUSE_WRITE_CACHE (1 << 0)
347 #define FUSE_WRITE_LOCKOWNER (1 << 1)
348 #define FUSE_WRITE_KILL_PRIV (1 << 2)
349
353 #define FUSE_READ_LOCKOWNER (1 << 1)
354
367 #define FUSE_IOCTL_COMPAT (1 << 0)
368 #define FUSE_IOCTL_UNRESTRICTED (1 << 1)
369 #define FUSE_IOCTL_RETRY (1 << 2)
370 #define FUSE_IOCTL_32BIT (1 << 3)
371 #define FUSE_IOCTL_DIR (1 << 4)
372 #define FUSE_IOCTL_COMPAT_X32 (1 << 5)
373
374 #define FUSE_IOCTL_MAX_IOV 256
375
381 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
382
388 #define FUSE_FSYNC_FDATASYNC (1 << 0)
389
390 enum fuse_opcode {
391 FUSE_LOOKUP = 1,
392 FUSE_FORGET = 2, /* no reply */
393 FUSE_GETATTR = 3,
394 FUSE_SETATTR = 4,
395 FUSE_READLINK = 5,
396 FUSE_SYMLINK = 6,
397 FUSE_MKNOD = 8,
398 FUSE_MKDIR = 9,
399 FUSE_UNLINK = 10,
400 FUSE_RMDIR = 11,
401 FUSE_RENAME = 12,
402 FUSE_LINK = 13,
403 FUSE_OPEN = 14,
404 FUSE_READ = 15,
405 FUSE_WRITE = 16,
406 FUSE_STATFS = 17,
407 FUSE_RELEASE = 18,
408 FUSE_FSYNC = 20,
409 FUSE_SETXATTR = 21,
410 FUSE_GETXATTR = 22,
411 FUSE_LISTXATTR = 23,
412 FUSE_REMOVEXATTR = 24,
413 FUSE_FLUSH = 25,
414 FUSE_INIT = 26,
415 FUSE_OPENDIR = 27,
416 FUSE_READDIR = 28,
417 FUSE_RELEASEDIR = 29,
418 FUSE_FSYNCDIR = 30,
419 FUSE_GETLK = 31,
420 FUSE_SETLK = 32,
421 FUSE_SETLKW = 33,
422 FUSE_ACCESS = 34,
423 FUSE_CREATE = 35,
424 FUSE_INTERRUPT = 36,
425 FUSE_BMAP = 37,
426 FUSE_DESTROY = 38,
427 FUSE_IOCTL = 39,
428 FUSE_POLL = 40,
429 FUSE_NOTIFY_REPLY = 41,
430 FUSE_BATCH_FORGET = 42,
431 FUSE_FALLOCATE = 43,
432 FUSE_READDIRPLUS = 44,
433 FUSE_RENAME2 = 45,
434 FUSE_LSEEK = 46,
435 FUSE_COPY_FILE_RANGE = 47,
436
437 /* CUSE specific operations */
438 CUSE_INIT = 4096
439 };
440
441 enum fuse_notify_code {
442 FUSE_NOTIFY_POLL = 1,
443 FUSE_NOTIFY_INVAL_INODE = 2,
444 FUSE_NOTIFY_INVAL_ENTRY = 3,
445 FUSE_NOTIFY_STORE = 4,
446 FUSE_NOTIFY_RETRIEVE = 5,
447 FUSE_NOTIFY_DELETE = 6,
448 FUSE_NOTIFY_CODE_MAX
449 };
450
451 /* The read buffer is required to be at least 8k, but may be much larger */
452 #define FUSE_MIN_READ_BUFFER 8192
453
454 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
455
456 struct fuse_entry_out {
457 uint64_t nodeid; /* Inode ID */
458 uint64_t generation; /* Inode generation: nodeid:gen must
459 be unique for the fs's lifetime */
460 uint64_t entry_valid; /* Cache timeout for the name */
461 uint64_t attr_valid; /* Cache timeout for the attributes */
462 uint32_t entry_valid_nsec;
463 uint32_t attr_valid_nsec;
464 struct fuse_attr attr;
465 };
466
467 struct fuse_forget_in {
468 uint64_t nlookup;
469 };
470
471 struct fuse_forget_one {
472 uint64_t nodeid;
473 uint64_t nlookup;
474 };
475
476 struct fuse_batch_forget_in {
477 uint32_t count;
478 uint32_t dummy;
479 };
480
481 struct fuse_getattr_in {
482 uint32_t getattr_flags;
483 uint32_t dummy;
484 uint64_t fh;
485 };
486
487 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
488
489 struct fuse_attr_out {
490 uint64_t attr_valid; /* Cache timeout for the attributes */
491 uint32_t attr_valid_nsec;
492 uint32_t dummy;
493 struct fuse_attr attr;
494 };
495
496 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
497
498 struct fuse_mknod_in {
499 uint32_t mode;
500 uint32_t rdev;
501 uint32_t umask;
502 uint32_t padding;
503 };
504
505 struct fuse_mkdir_in {
506 uint32_t mode;
507 uint32_t umask;
508 };
509
510 struct fuse_rename_in {
511 uint64_t newdir;
512 };
513
514 struct fuse_rename2_in {
515 uint64_t newdir;
516 uint32_t flags;
517 uint32_t padding;
518 };
519
520 struct fuse_link_in {
521 uint64_t oldnodeid;
522 };
523
524 struct fuse_setattr_in {
525 uint32_t valid;
526 uint32_t padding;
527 uint64_t fh;
528 uint64_t size;
529 uint64_t lock_owner;
530 uint64_t atime;
531 uint64_t mtime;
532 uint64_t ctime;
533 uint32_t atimensec;
534 uint32_t mtimensec;
535 uint32_t ctimensec;
536 uint32_t mode;
537 uint32_t unused4;
538 uint32_t uid;
539 uint32_t gid;
540 uint32_t unused5;
541 };
542
543 struct fuse_open_in {
544 uint32_t flags;
545 uint32_t unused;
546 };
547
548 struct fuse_create_in {
549 uint32_t flags;
550 uint32_t mode;
551 uint32_t umask;
552 uint32_t padding;
553 };
554
555 struct fuse_open_out {
556 uint64_t fh;
557 uint32_t open_flags;
558 uint32_t padding;
559 };
560
561 struct fuse_release_in {
562 uint64_t fh;
563 uint32_t flags;
564 uint32_t release_flags;
565 uint64_t lock_owner;
566 };
567
568 struct fuse_flush_in {
569 uint64_t fh;
570 uint32_t unused;
571 uint32_t padding;
572 uint64_t lock_owner;
573 };
574
575 struct fuse_read_in {
576 uint64_t fh;
577 uint64_t offset;
578 uint32_t size;
579 uint32_t read_flags;
580 uint64_t lock_owner;
581 uint32_t flags;
582 uint32_t padding;
583 };
584
585 #define FUSE_COMPAT_WRITE_IN_SIZE 24
586
587 struct fuse_write_in {
588 uint64_t fh;
589 uint64_t offset;
590 uint32_t size;
591 uint32_t write_flags;
592 uint64_t lock_owner;
593 uint32_t flags;
594 uint32_t padding;
595 };
596
597 struct fuse_write_out {
598 uint32_t size;
599 uint32_t padding;
600 };
601
602 #define FUSE_COMPAT_STATFS_SIZE 48
603
604 struct fuse_statfs_out {
605 struct fuse_kstatfs st;
606 };
607
608 struct fuse_fsync_in {
609 uint64_t fh;
610 uint32_t fsync_flags;
611 uint32_t padding;
612 };
613
614 struct fuse_setxattr_in {
615 uint32_t size;
616 uint32_t flags;
617 };
618
619 struct fuse_getxattr_in {
620 uint32_t size;
621 uint32_t padding;
622 };
623
624 struct fuse_getxattr_out {
625 uint32_t size;
626 uint32_t padding;
627 };
628
629 struct fuse_lk_in {
630 uint64_t fh;
631 uint64_t owner;
632 struct fuse_file_lock lk;
633 uint32_t lk_flags;
634 uint32_t padding;
635 };
636
637 struct fuse_lk_out {
638 struct fuse_file_lock lk;
639 };
640
641 struct fuse_access_in {
642 uint32_t mask;
643 uint32_t padding;
644 };
645
646 struct fuse_init_in {
647 uint32_t major;
648 uint32_t minor;
649 uint32_t max_readahead;
650 uint32_t flags;
651 uint32_t flags2;
652 uint32_t unused[11];
653 };
654
655 #define FUSE_COMPAT_INIT_OUT_SIZE 8
656 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
657
658 struct fuse_init_out {
659 uint32_t major;
660 uint32_t minor;
661 uint32_t max_readahead;
662 uint32_t flags;
663 uint16_t max_background;
664 uint16_t congestion_threshold;
665 uint32_t max_write;
666 uint32_t time_gran;
667 uint16_t max_pages;
668 uint16_t map_alignment;
669 uint32_t flags2;
670 uint32_t unused[7];
671 };
672
673 #define CUSE_INIT_INFO_MAX 4096
674
675 struct cuse_init_in {
676 uint32_t major;
677 uint32_t minor;
678 uint32_t unused;
679 uint32_t flags;
680 };
681
682 struct cuse_init_out {
683 uint32_t major;
684 uint32_t minor;
685 uint32_t unused;
686 uint32_t flags;
687 uint32_t max_read;
688 uint32_t max_write;
689 uint32_t dev_major; /* chardev major */
690 uint32_t dev_minor; /* chardev minor */
691 uint32_t spare[10];
692 };
693
694 struct fuse_interrupt_in {
695 uint64_t unique;
696 };
697
698 struct fuse_bmap_in {
699 uint64_t block;
700 uint32_t blocksize;
701 uint32_t padding;
702 };
703
704 struct fuse_bmap_out {
705 uint64_t block;
706 };
707
708 struct fuse_ioctl_in {
709 uint64_t fh;
710 uint32_t flags;
711 uint32_t cmd;
712 uint64_t arg;
713 uint32_t in_size;
714 uint32_t out_size;
715 };
716
717 struct fuse_ioctl_iovec {
718 uint64_t base;
719 uint64_t len;
720 };
721
722 struct fuse_ioctl_out {
723 int32_t result;
724 uint32_t flags;
725 uint32_t in_iovs;
726 uint32_t out_iovs;
727 };
728
729 struct fuse_poll_in {
730 uint64_t fh;
731 uint64_t kh;
732 uint32_t flags;
733 uint32_t events;
734 };
735
736 struct fuse_poll_out {
737 uint32_t revents;
738 uint32_t padding;
739 };
740
741 struct fuse_notify_poll_wakeup_out {
742 uint64_t kh;
743 };
744
745 struct fuse_fallocate_in {
746 uint64_t fh;
747 uint64_t offset;
748 uint64_t length;
749 uint32_t mode;
750 uint32_t padding;
751 };
752
753 struct fuse_in_header {
754 uint32_t len;
755 uint32_t opcode;
756 uint64_t unique;
757 uint64_t nodeid;
758 uint32_t uid;
759 uint32_t gid;
760 uint32_t pid;
761 uint32_t padding;
762 };
763
764 struct fuse_out_header {
765 uint32_t len;
766 int32_t error;
767 uint64_t unique;
768 };
769
770 struct fuse_dirent {
771 uint64_t ino;
772 uint64_t off;
773 uint32_t namelen;
774 uint32_t type;
775 char name[];
776 };
777
778 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
779 #define FUSE_DIRENT_ALIGN(x) \
780 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
781 #define FUSE_DIRENT_SIZE(d) \
782 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
783
784 struct fuse_direntplus {
785 struct fuse_entry_out entry_out;
786 struct fuse_dirent dirent;
787 };
788
789 #define FUSE_NAME_OFFSET_DIRENTPLUS \
790 offsetof(struct fuse_direntplus, dirent.name)
791 #define FUSE_DIRENTPLUS_SIZE(d) \
792 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
793
794 struct fuse_notify_inval_inode_out {
795 uint64_t ino;
796 int64_t off;
797 int64_t len;
798 };
799
800 struct fuse_notify_inval_entry_out {
801 uint64_t parent;
802 uint32_t namelen;
803 uint32_t padding;
804 };
805
806 struct fuse_notify_delete_out {
807 uint64_t parent;
808 uint64_t child;
809 uint32_t namelen;
810 uint32_t padding;
811 };
812
813 struct fuse_notify_store_out {
814 uint64_t nodeid;
815 uint64_t offset;
816 uint32_t size;
817 uint32_t padding;
818 };
819
820 struct fuse_notify_retrieve_out {
821 uint64_t notify_unique;
822 uint64_t nodeid;
823 uint64_t offset;
824 uint32_t size;
825 uint32_t padding;
826 };
827
828 /* Matches the size of fuse_write_in */
829 struct fuse_notify_retrieve_in {
830 uint64_t dummy1;
831 uint64_t offset;
832 uint32_t size;
833 uint32_t dummy2;
834 uint64_t dummy3;
835 uint64_t dummy4;
836 };
837
838 /* Device ioctls: */
839 #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t)
840
841 struct fuse_lseek_in {
842 uint64_t fh;
843 uint64_t offset;
844 uint32_t whence;
845 uint32_t padding;
846 };
847
848 struct fuse_lseek_out {
849 uint64_t offset;
850 };
851
852 struct fuse_copy_file_range_in {
853 uint64_t fh_in;
854 uint64_t off_in;
855 uint64_t nodeid_out;
856 uint64_t fh_out;
857 uint64_t off_out;
858 uint64_t len;
859 uint64_t flags;
860 };
861
862 #endif /* _LINUX_FUSE_H */