libfuse: fuse-3.14.1/include/fuse_kernel.h Source File

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
244 #define FOPEN_DIRECT_IO (1 << 0)
245 #define FOPEN_KEEP_CACHE (1 << 1)
246 #define FOPEN_NONSEEKABLE (1 << 2)
247 #define FOPEN_CACHE_DIR (1 << 3)
248 #define FOPEN_STREAM (1 << 4)
249 #define FOPEN_NOFLUSH (1 << 5)
250 #define FOPEN_PARALLEL_DIRECT_WRITES (1 << 6)
281 #define FUSE_ASYNC_READ (1 << 0)
282 #define FUSE_POSIX_LOCKS (1 << 1)
283 #define FUSE_FILE_OPS (1 << 2)
284 #define FUSE_ATOMIC_O_TRUNC (1 << 3)
285 #define FUSE_EXPORT_SUPPORT (1 << 4)
286 #define FUSE_BIG_WRITES (1 << 5)
287 #define FUSE_DONT_MASK (1 << 6)
288 #define FUSE_SPLICE_WRITE (1 << 7)
289 #define FUSE_SPLICE_MOVE (1 << 8)
290 #define FUSE_SPLICE_READ (1 << 9)
291 #define FUSE_FLOCK_LOCKS (1 << 10)
292 #define FUSE_HAS_IOCTL_DIR (1 << 11)
293 #define FUSE_AUTO_INVAL_DATA (1 << 12)
294 #define FUSE_DO_READDIRPLUS (1 << 13)
295 #define FUSE_READDIRPLUS_AUTO (1 << 14)
296 #define FUSE_ASYNC_DIO (1 << 15)
297 #define FUSE_WRITEBACK_CACHE (1 << 16)
298 #define FUSE_NO_OPEN_SUPPORT (1 << 17)
299 #define FUSE_PARALLEL_DIROPS (1 << 18)
300 #define FUSE_HANDLE_KILLPRIV (1 << 19)
301 #define FUSE_POSIX_ACL (1 << 20)
302 #define FUSE_ABORT_ERROR (1 << 21)
303 #define FUSE_MAX_PAGES (1 << 22)
304 #define FUSE_CACHE_SYMLINKS (1 << 23)
305 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
306 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
307 #define FUSE_MAP_ALIGNMENT (1 << 26)
308 #define FUSE_SUBMOUNTS (1 << 27)
309 #define FUSE_HANDLE_KILLPRIV_V2 (1 << 28)
310 #define FUSE_SETXATTR_EXT (1 << 29)
311 #define FUSE_INIT_EXT (1 << 30)
312 #define FUSE_INIT_RESERVED (1 << 31)
313 /* bits 32..63 get shifted down 32 bits into the flags2 field */
314 #define FUSE_SECURITY_CTX (1ULL << 32)
315 #define FUSE_HAS_INODE_DAX (1ULL << 33)
316
322 #define CUSE_UNRESTRICTED_IOCTL (1 << 0)
323
327 #define FUSE_RELEASE_FLUSH (1 << 0)
328 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
329
333 #define FUSE_GETATTR_FH (1 << 0)
334
338 #define FUSE_LK_FLOCK (1 << 0)
339
347 #define FUSE_WRITE_CACHE (1 << 0)
348 #define FUSE_WRITE_LOCKOWNER (1 << 1)
349 #define FUSE_WRITE_KILL_PRIV (1 << 2)
350
354 #define FUSE_READ_LOCKOWNER (1 << 1)
355
368 #define FUSE_IOCTL_COMPAT (1 << 0)
369 #define FUSE_IOCTL_UNRESTRICTED (1 << 1)
370 #define FUSE_IOCTL_RETRY (1 << 2)
371 #define FUSE_IOCTL_32BIT (1 << 3)
372 #define FUSE_IOCTL_DIR (1 << 4)
373 #define FUSE_IOCTL_COMPAT_X32 (1 << 5)
374
375 #define FUSE_IOCTL_MAX_IOV 256
376
382 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
383
389 #define FUSE_FSYNC_FDATASYNC (1 << 0)
390
395 #define FUSE_EXPIRE_ONLY (1 << 0)
396
397 enum fuse_opcode {
398 FUSE_LOOKUP = 1,
399 FUSE_FORGET = 2, /* no reply */
400 FUSE_GETATTR = 3,
401 FUSE_SETATTR = 4,
402 FUSE_READLINK = 5,
403 FUSE_SYMLINK = 6,
404 FUSE_MKNOD = 8,
405 FUSE_MKDIR = 9,
406 FUSE_UNLINK = 10,
407 FUSE_RMDIR = 11,
408 FUSE_RENAME = 12,
409 FUSE_LINK = 13,
410 FUSE_OPEN = 14,
411 FUSE_READ = 15,
412 FUSE_WRITE = 16,
413 FUSE_STATFS = 17,
414 FUSE_RELEASE = 18,
415 FUSE_FSYNC = 20,
416 FUSE_SETXATTR = 21,
417 FUSE_GETXATTR = 22,
418 FUSE_LISTXATTR = 23,
419 FUSE_REMOVEXATTR = 24,
420 FUSE_FLUSH = 25,
421 FUSE_INIT = 26,
422 FUSE_OPENDIR = 27,
423 FUSE_READDIR = 28,
424 FUSE_RELEASEDIR = 29,
425 FUSE_FSYNCDIR = 30,
426 FUSE_GETLK = 31,
427 FUSE_SETLK = 32,
428 FUSE_SETLKW = 33,
429 FUSE_ACCESS = 34,
430 FUSE_CREATE = 35,
431 FUSE_INTERRUPT = 36,
432 FUSE_BMAP = 37,
433 FUSE_DESTROY = 38,
434 FUSE_IOCTL = 39,
435 FUSE_POLL = 40,
436 FUSE_NOTIFY_REPLY = 41,
437 FUSE_BATCH_FORGET = 42,
438 FUSE_FALLOCATE = 43,
439 FUSE_READDIRPLUS = 44,
440 FUSE_RENAME2 = 45,
441 FUSE_LSEEK = 46,
442 FUSE_COPY_FILE_RANGE = 47,
443
444 /* CUSE specific operations */
445 CUSE_INIT = 4096
446 };
447
448 enum fuse_notify_code {
449 FUSE_NOTIFY_POLL = 1,
450 FUSE_NOTIFY_INVAL_INODE = 2,
451 FUSE_NOTIFY_INVAL_ENTRY = 3,
452 FUSE_NOTIFY_STORE = 4,
453 FUSE_NOTIFY_RETRIEVE = 5,
454 FUSE_NOTIFY_DELETE = 6,
455 FUSE_NOTIFY_CODE_MAX
456 };
457
458 /* The read buffer is required to be at least 8k, but may be much larger */
459 #define FUSE_MIN_READ_BUFFER 8192
460
461 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
462
463 struct fuse_entry_out {
464 uint64_t nodeid; /* Inode ID */
465 uint64_t generation; /* Inode generation: nodeid:gen must
466 be unique for the fs's lifetime */
467 uint64_t entry_valid; /* Cache timeout for the name */
468 uint64_t attr_valid; /* Cache timeout for the attributes */
469 uint32_t entry_valid_nsec;
470 uint32_t attr_valid_nsec;
471 struct fuse_attr attr;
472 };
473
474 struct fuse_forget_in {
475 uint64_t nlookup;
476 };
477
478 struct fuse_forget_one {
479 uint64_t nodeid;
480 uint64_t nlookup;
481 };
482
483 struct fuse_batch_forget_in {
484 uint32_t count;
485 uint32_t dummy;
486 };
487
488 struct fuse_getattr_in {
489 uint32_t getattr_flags;
490 uint32_t dummy;
491 uint64_t fh;
492 };
493
494 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
495
496 struct fuse_attr_out {
497 uint64_t attr_valid; /* Cache timeout for the attributes */
498 uint32_t attr_valid_nsec;
499 uint32_t dummy;
500 struct fuse_attr attr;
501 };
502
503 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
504
505 struct fuse_mknod_in {
506 uint32_t mode;
507 uint32_t rdev;
508 uint32_t umask;
509 uint32_t padding;
510 };
511
512 struct fuse_mkdir_in {
513 uint32_t mode;
514 uint32_t umask;
515 };
516
517 struct fuse_rename_in {
518 uint64_t newdir;
519 };
520
521 struct fuse_rename2_in {
522 uint64_t newdir;
523 uint32_t flags;
524 uint32_t padding;
525 };
526
527 struct fuse_link_in {
528 uint64_t oldnodeid;
529 };
530
531 struct fuse_setattr_in {
532 uint32_t valid;
533 uint32_t padding;
534 uint64_t fh;
535 uint64_t size;
536 uint64_t lock_owner;
537 uint64_t atime;
538 uint64_t mtime;
539 uint64_t ctime;
540 uint32_t atimensec;
541 uint32_t mtimensec;
542 uint32_t ctimensec;
543 uint32_t mode;
544 uint32_t unused4;
545 uint32_t uid;
546 uint32_t gid;
547 uint32_t unused5;
548 };
549
550 struct fuse_open_in {
551 uint32_t flags;
552 uint32_t unused;
553 };
554
555 struct fuse_create_in {
556 uint32_t flags;
557 uint32_t mode;
558 uint32_t umask;
559 uint32_t padding;
560 };
561
562 struct fuse_open_out {
563 uint64_t fh;
564 uint32_t open_flags;
565 uint32_t padding;
566 };
567
568 struct fuse_release_in {
569 uint64_t fh;
570 uint32_t flags;
571 uint32_t release_flags;
572 uint64_t lock_owner;
573 };
574
575 struct fuse_flush_in {
576 uint64_t fh;
577 uint32_t unused;
578 uint32_t padding;
579 uint64_t lock_owner;
580 };
581
582 struct fuse_read_in {
583 uint64_t fh;
584 uint64_t offset;
585 uint32_t size;
586 uint32_t read_flags;
587 uint64_t lock_owner;
588 uint32_t flags;
589 uint32_t padding;
590 };
591
592 #define FUSE_COMPAT_WRITE_IN_SIZE 24
593
594 struct fuse_write_in {
595 uint64_t fh;
596 uint64_t offset;
597 uint32_t size;
598 uint32_t write_flags;
599 uint64_t lock_owner;
600 uint32_t flags;
601 uint32_t padding;
602 };
603
604 struct fuse_write_out {
605 uint32_t size;
606 uint32_t padding;
607 };
608
609 #define FUSE_COMPAT_STATFS_SIZE 48
610
611 struct fuse_statfs_out {
612 struct fuse_kstatfs st;
613 };
614
615 struct fuse_fsync_in {
616 uint64_t fh;
617 uint32_t fsync_flags;
618 uint32_t padding;
619 };
620
621 struct fuse_setxattr_in {
622 uint32_t size;
623 uint32_t flags;
624 };
625
626 struct fuse_getxattr_in {
627 uint32_t size;
628 uint32_t padding;
629 };
630
631 struct fuse_getxattr_out {
632 uint32_t size;
633 uint32_t padding;
634 };
635
636 struct fuse_lk_in {
637 uint64_t fh;
638 uint64_t owner;
639 struct fuse_file_lock lk;
640 uint32_t lk_flags;
641 uint32_t padding;
642 };
643
644 struct fuse_lk_out {
645 struct fuse_file_lock lk;
646 };
647
648 struct fuse_access_in {
649 uint32_t mask;
650 uint32_t padding;
651 };
652
653 struct fuse_init_in {
654 uint32_t major;
655 uint32_t minor;
656 uint32_t max_readahead;
657 uint32_t flags;
658 uint32_t flags2;
659 uint32_t unused[11];
660 };
661
662 #define FUSE_COMPAT_INIT_OUT_SIZE 8
663 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
664
665 struct fuse_init_out {
666 uint32_t major;
667 uint32_t minor;
668 uint32_t max_readahead;
669 uint32_t flags;
670 uint16_t max_background;
671 uint16_t congestion_threshold;
672 uint32_t max_write;
673 uint32_t time_gran;
674 uint16_t max_pages;
675 uint16_t map_alignment;
676 uint32_t flags2;
677 uint32_t unused[7];
678 };
679
680 #define CUSE_INIT_INFO_MAX 4096
681
682 struct cuse_init_in {
683 uint32_t major;
684 uint32_t minor;
685 uint32_t unused;
686 uint32_t flags;
687 };
688
689 struct cuse_init_out {
690 uint32_t major;
691 uint32_t minor;
692 uint32_t unused;
693 uint32_t flags;
694 uint32_t max_read;
695 uint32_t max_write;
696 uint32_t dev_major; /* chardev major */
697 uint32_t dev_minor; /* chardev minor */
698 uint32_t spare[10];
699 };
700
701 struct fuse_interrupt_in {
702 uint64_t unique;
703 };
704
705 struct fuse_bmap_in {
706 uint64_t block;
707 uint32_t blocksize;
708 uint32_t padding;
709 };
710
711 struct fuse_bmap_out {
712 uint64_t block;
713 };
714
715 struct fuse_ioctl_in {
716 uint64_t fh;
717 uint32_t flags;
718 uint32_t cmd;
719 uint64_t arg;
720 uint32_t in_size;
721 uint32_t out_size;
722 };
723
724 struct fuse_ioctl_iovec {
725 uint64_t base;
726 uint64_t len;
727 };
728
729 struct fuse_ioctl_out {
730 int32_t result;
731 uint32_t flags;
732 uint32_t in_iovs;
733 uint32_t out_iovs;
734 };
735
736 struct fuse_poll_in {
737 uint64_t fh;
738 uint64_t kh;
739 uint32_t flags;
740 uint32_t events;
741 };
742
743 struct fuse_poll_out {
744 uint32_t revents;
745 uint32_t padding;
746 };
747
748 struct fuse_notify_poll_wakeup_out {
749 uint64_t kh;
750 };
751
752 struct fuse_fallocate_in {
753 uint64_t fh;
754 uint64_t offset;
755 uint64_t length;
756 uint32_t mode;
757 uint32_t padding;
758 };
759
760 struct fuse_in_header {
761 uint32_t len;
762 uint32_t opcode;
763 uint64_t unique;
764 uint64_t nodeid;
765 uint32_t uid;
766 uint32_t gid;
767 uint32_t pid;
768 uint32_t padding;
769 };
770
771 struct fuse_out_header {
772 uint32_t len;
773 int32_t error;
774 uint64_t unique;
775 };
776
777 struct fuse_dirent {
778 uint64_t ino;
779 uint64_t off;
780 uint32_t namelen;
781 uint32_t type;
782 char name[];
783 };
784
785 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
786 #define FUSE_DIRENT_ALIGN(x) \
787 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
788 #define FUSE_DIRENT_SIZE(d) \
789 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
790
791 struct fuse_direntplus {
792 struct fuse_entry_out entry_out;
793 struct fuse_dirent dirent;
794 };
795
796 #define FUSE_NAME_OFFSET_DIRENTPLUS \
797 offsetof(struct fuse_direntplus, dirent.name)
798 #define FUSE_DIRENTPLUS_SIZE(d) \
799 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
800
801 struct fuse_notify_inval_inode_out {
802 uint64_t ino;
803 int64_t off;
804 int64_t len;
805 };
806
807 struct fuse_notify_inval_entry_out {
808 uint64_t parent;
809 uint32_t namelen;
810 uint32_t flags;
811 };
812
813 struct fuse_notify_delete_out {
814 uint64_t parent;
815 uint64_t child;
816 uint32_t namelen;
817 uint32_t padding;
818 };
819
820 struct fuse_notify_store_out {
821 uint64_t nodeid;
822 uint64_t offset;
823 uint32_t size;
824 uint32_t padding;
825 };
826
827 struct fuse_notify_retrieve_out {
828 uint64_t notify_unique;
829 uint64_t nodeid;
830 uint64_t offset;
831 uint32_t size;
832 uint32_t padding;
833 };
834
835 /* Matches the size of fuse_write_in */
836 struct fuse_notify_retrieve_in {
837 uint64_t dummy1;
838 uint64_t offset;
839 uint32_t size;
840 uint32_t dummy2;
841 uint64_t dummy3;
842 uint64_t dummy4;
843 };
844
845 /* Device ioctls: */
846 #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t)
847
848 struct fuse_lseek_in {
849 uint64_t fh;
850 uint64_t offset;
851 uint32_t whence;
852 uint32_t padding;
853 };
854
855 struct fuse_lseek_out {
856 uint64_t offset;
857 };
858
859 struct fuse_copy_file_range_in {
860 uint64_t fh_in;
861 uint64_t off_in;
862 uint64_t nodeid_out;
863 uint64_t fh_out;
864 uint64_t off_out;
865 uint64_t len;
866 uint64_t flags;
867 };
868
869 #endif /* _LINUX_FUSE_H */