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
242 #define FOPEN_DIRECT_IO (1 << 0)
243 #define FOPEN_KEEP_CACHE (1 << 1)
244 #define FOPEN_NONSEEKABLE (1 << 2)
245 #define FOPEN_CACHE_DIR (1 << 3)
246 #define FOPEN_STREAM (1 << 4)
247
278 #define FUSE_ASYNC_READ (1 << 0)
279 #define FUSE_POSIX_LOCKS (1 << 1)
280 #define FUSE_FILE_OPS (1 << 2)
281 #define FUSE_ATOMIC_O_TRUNC (1 << 3)
282 #define FUSE_EXPORT_SUPPORT (1 << 4)
283 #define FUSE_BIG_WRITES (1 << 5)
284 #define FUSE_DONT_MASK (1 << 6)
285 #define FUSE_SPLICE_WRITE (1 << 7)
286 #define FUSE_SPLICE_MOVE (1 << 8)
287 #define FUSE_SPLICE_READ (1 << 9)
288 #define FUSE_FLOCK_LOCKS (1 << 10)
289 #define FUSE_HAS_IOCTL_DIR (1 << 11)
290 #define FUSE_AUTO_INVAL_DATA (1 << 12)
291 #define FUSE_DO_READDIRPLUS (1 << 13)
292 #define FUSE_READDIRPLUS_AUTO (1 << 14)
293 #define FUSE_ASYNC_DIO (1 << 15)
294 #define FUSE_WRITEBACK_CACHE (1 << 16)
295 #define FUSE_NO_OPEN_SUPPORT (1 << 17)
296 #define FUSE_PARALLEL_DIROPS (1 << 18)
297 #define FUSE_HANDLE_KILLPRIV (1 << 19)
298 #define FUSE_POSIX_ACL (1 << 20)
299 #define FUSE_ABORT_ERROR (1 << 21)
300 #define FUSE_MAX_PAGES (1 << 22)
301 #define FUSE_CACHE_SYMLINKS (1 << 23)
302 #define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
303 #define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
304
310 #define CUSE_UNRESTRICTED_IOCTL (1 << 0)
311
315 #define FUSE_RELEASE_FLUSH (1 << 0)
316 #define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
317
321 #define FUSE_GETATTR_FH (1 << 0)
322
326 #define FUSE_LK_FLOCK (1 << 0)
327
335 #define FUSE_WRITE_CACHE (1 << 0)
336 #define FUSE_WRITE_LOCKOWNER (1 << 1)
337 #define FUSE_WRITE_KILL_PRIV (1 << 2)
338
342 #define FUSE_READ_LOCKOWNER (1 << 1)
343
356 #define FUSE_IOCTL_COMPAT (1 << 0)
357 #define FUSE_IOCTL_UNRESTRICTED (1 << 1)
358 #define FUSE_IOCTL_RETRY (1 << 2)
359 #define FUSE_IOCTL_32BIT (1 << 3)
360 #define FUSE_IOCTL_DIR (1 << 4)
361 #define FUSE_IOCTL_COMPAT_X32 (1 << 5)
362
363 #define FUSE_IOCTL_MAX_IOV 256
364
370 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
371
377 #define FUSE_FSYNC_FDATASYNC (1 << 0)
378
379 enum fuse_opcode {
380 FUSE_LOOKUP = 1,
381 FUSE_FORGET = 2, /* no reply */
382 FUSE_GETATTR = 3,
383 FUSE_SETATTR = 4,
384 FUSE_READLINK = 5,
385 FUSE_SYMLINK = 6,
386 FUSE_MKNOD = 8,
387 FUSE_MKDIR = 9,
388 FUSE_UNLINK = 10,
389 FUSE_RMDIR = 11,
390 FUSE_RENAME = 12,
391 FUSE_LINK = 13,
392 FUSE_OPEN = 14,
393 FUSE_READ = 15,
394 FUSE_WRITE = 16,
395 FUSE_STATFS = 17,
396 FUSE_RELEASE = 18,
397 FUSE_FSYNC = 20,
398 FUSE_SETXATTR = 21,
399 FUSE_GETXATTR = 22,
400 FUSE_LISTXATTR = 23,
401 FUSE_REMOVEXATTR = 24,
402 FUSE_FLUSH = 25,
403 FUSE_INIT = 26,
404 FUSE_OPENDIR = 27,
405 FUSE_READDIR = 28,
406 FUSE_RELEASEDIR = 29,
407 FUSE_FSYNCDIR = 30,
408 FUSE_GETLK = 31,
409 FUSE_SETLK = 32,
410 FUSE_SETLKW = 33,
411 FUSE_ACCESS = 34,
412 FUSE_CREATE = 35,
413 FUSE_INTERRUPT = 36,
414 FUSE_BMAP = 37,
415 FUSE_DESTROY = 38,
416 FUSE_IOCTL = 39,
417 FUSE_POLL = 40,
418 FUSE_NOTIFY_REPLY = 41,
419 FUSE_BATCH_FORGET = 42,
420 FUSE_FALLOCATE = 43,
421 FUSE_READDIRPLUS = 44,
422 FUSE_RENAME2 = 45,
423 FUSE_LSEEK = 46,
424 FUSE_COPY_FILE_RANGE = 47,
425
426 /* CUSE specific operations */
427 CUSE_INIT = 4096,
428 };
429
430 enum fuse_notify_code {
431 FUSE_NOTIFY_POLL = 1,
432 FUSE_NOTIFY_INVAL_INODE = 2,
433 FUSE_NOTIFY_INVAL_ENTRY = 3,
434 FUSE_NOTIFY_STORE = 4,
435 FUSE_NOTIFY_RETRIEVE = 5,
436 FUSE_NOTIFY_DELETE = 6,
437 FUSE_NOTIFY_CODE_MAX,
438 };
439
440 /* The read buffer is required to be at least 8k, but may be much larger */
441 #define FUSE_MIN_READ_BUFFER 8192
442
443 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
444
445 struct fuse_entry_out {
446 uint64_t nodeid; /* Inode ID */
447 uint64_t generation; /* Inode generation: nodeid:gen must
448 be unique for the fs's lifetime */
449 uint64_t entry_valid; /* Cache timeout for the name */
450 uint64_t attr_valid; /* Cache timeout for the attributes */
451 uint32_t entry_valid_nsec;
452 uint32_t attr_valid_nsec;
453 struct fuse_attr attr;
454 };
455
456 struct fuse_forget_in {
457 uint64_t nlookup;
458 };
459
460 struct fuse_forget_one {
461 uint64_t nodeid;
462 uint64_t nlookup;
463 };
464
465 struct fuse_batch_forget_in {
466 uint32_t count;
467 uint32_t dummy;
468 };
469
470 struct fuse_getattr_in {
471 uint32_t getattr_flags;
472 uint32_t dummy;
473 uint64_t fh;
474 };
475
476 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
477
478 struct fuse_attr_out {
479 uint64_t attr_valid; /* Cache timeout for the attributes */
480 uint32_t attr_valid_nsec;
481 uint32_t dummy;
482 struct fuse_attr attr;
483 };
484
485 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
486
487 struct fuse_mknod_in {
488 uint32_t mode;
489 uint32_t rdev;
490 uint32_t umask;
491 uint32_t padding;
492 };
493
494 struct fuse_mkdir_in {
495 uint32_t mode;
496 uint32_t umask;
497 };
498
499 struct fuse_rename_in {
500 uint64_t newdir;
501 };
502
503 struct fuse_rename2_in {
504 uint64_t newdir;
505 uint32_t flags;
506 uint32_t padding;
507 };
508
509 struct fuse_link_in {
510 uint64_t oldnodeid;
511 };
512
513 struct fuse_setattr_in {
514 uint32_t valid;
515 uint32_t padding;
516 uint64_t fh;
517 uint64_t size;
518 uint64_t lock_owner;
519 uint64_t atime;
520 uint64_t mtime;
521 uint64_t ctime;
522 uint32_t atimensec;
523 uint32_t mtimensec;
524 uint32_t ctimensec;
525 uint32_t mode;
526 uint32_t unused4;
527 uint32_t uid;
528 uint32_t gid;
529 uint32_t unused5;
530 };
531
532 struct fuse_open_in {
533 uint32_t flags;
534 uint32_t unused;
535 };
536
537 struct fuse_create_in {
538 uint32_t flags;
539 uint32_t mode;
540 uint32_t umask;
541 uint32_t padding;
542 };
543
544 struct fuse_open_out {
545 uint64_t fh;
546 uint32_t open_flags;
547 uint32_t padding;
548 };
549
550 struct fuse_release_in {
551 uint64_t fh;
552 uint32_t flags;
553 uint32_t release_flags;
554 uint64_t lock_owner;
555 };
556
557 struct fuse_flush_in {
558 uint64_t fh;
559 uint32_t unused;
560 uint32_t padding;
561 uint64_t lock_owner;
562 };
563
564 struct fuse_read_in {
565 uint64_t fh;
566 uint64_t offset;
567 uint32_t size;
568 uint32_t read_flags;
569 uint64_t lock_owner;
570 uint32_t flags;
571 uint32_t padding;
572 };
573
574 #define FUSE_COMPAT_WRITE_IN_SIZE 24
575
576 struct fuse_write_in {
577 uint64_t fh;
578 uint64_t offset;
579 uint32_t size;
580 uint32_t write_flags;
581 uint64_t lock_owner;
582 uint32_t flags;
583 uint32_t padding;
584 };
585
586 struct fuse_write_out {
587 uint32_t size;
588 uint32_t padding;
589 };
590
591 #define FUSE_COMPAT_STATFS_SIZE 48
592
593 struct fuse_statfs_out {
594 struct fuse_kstatfs st;
595 };
596
597 struct fuse_fsync_in {
598 uint64_t fh;
599 uint32_t fsync_flags;
600 uint32_t padding;
601 };
602
603 struct fuse_setxattr_in {
604 uint32_t size;
605 uint32_t flags;
606 };
607
608 struct fuse_getxattr_in {
609 uint32_t size;
610 uint32_t padding;
611 };
612
613 struct fuse_getxattr_out {
614 uint32_t size;
615 uint32_t padding;
616 };
617
618 struct fuse_lk_in {
619 uint64_t fh;
620 uint64_t owner;
621 struct fuse_file_lock lk;
622 uint32_t lk_flags;
623 uint32_t padding;
624 };
625
626 struct fuse_lk_out {
627 struct fuse_file_lock lk;
628 };
629
630 struct fuse_access_in {
631 uint32_t mask;
632 uint32_t padding;
633 };
634
635 struct fuse_init_in {
636 uint32_t major;
637 uint32_t minor;
638 uint32_t max_readahead;
639 uint32_t flags;
640 };
641
642 #define FUSE_COMPAT_INIT_OUT_SIZE 8
643 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
644
645 struct fuse_init_out {
646 uint32_t major;
647 uint32_t minor;
648 uint32_t max_readahead;
649 uint32_t flags;
650 uint16_t max_background;
651 uint16_t congestion_threshold;
652 uint32_t max_write;
653 uint32_t time_gran;
654 uint16_t max_pages;
655 uint16_t padding;
656 uint32_t unused[8];
657 };
658
659 #define CUSE_INIT_INFO_MAX 4096
660
661 struct cuse_init_in {
662 uint32_t major;
663 uint32_t minor;
664 uint32_t unused;
665 uint32_t flags;
666 };
667
668 struct cuse_init_out {
669 uint32_t major;
670 uint32_t minor;
671 uint32_t unused;
672 uint32_t flags;
673 uint32_t max_read;
674 uint32_t max_write;
675 uint32_t dev_major; /* chardev major */
676 uint32_t dev_minor; /* chardev minor */
677 uint32_t spare[10];
678 };
679
680 struct fuse_interrupt_in {
681 uint64_t unique;
682 };
683
684 struct fuse_bmap_in {
685 uint64_t block;
686 uint32_t blocksize;
687 uint32_t padding;
688 };
689
690 struct fuse_bmap_out {
691 uint64_t block;
692 };
693
694 struct fuse_ioctl_in {
695 uint64_t fh;
696 uint32_t flags;
697 uint32_t cmd;
698 uint64_t arg;
699 uint32_t in_size;
700 uint32_t out_size;
701 };
702
703 struct fuse_ioctl_iovec {
704 uint64_t base;
705 uint64_t len;
706 };
707
708 struct fuse_ioctl_out {
709 int32_t result;
710 uint32_t flags;
711 uint32_t in_iovs;
712 uint32_t out_iovs;
713 };
714
715 struct fuse_poll_in {
716 uint64_t fh;
717 uint64_t kh;
718 uint32_t flags;
719 uint32_t events;
720 };
721
722 struct fuse_poll_out {
723 uint32_t revents;
724 uint32_t padding;
725 };
726
727 struct fuse_notify_poll_wakeup_out {
728 uint64_t kh;
729 };
730
731 struct fuse_fallocate_in {
732 uint64_t fh;
733 uint64_t offset;
734 uint64_t length;
735 uint32_t mode;
736 uint32_t padding;
737 };
738
739 struct fuse_in_header {
740 uint32_t len;
741 uint32_t opcode;
742 uint64_t unique;
743 uint64_t nodeid;
744 uint32_t uid;
745 uint32_t gid;
746 uint32_t pid;
747 uint32_t padding;
748 };
749
750 struct fuse_out_header {
751 uint32_t len;
752 int32_t error;
753 uint64_t unique;
754 };
755
756 struct fuse_dirent {
757 uint64_t ino;
758 uint64_t off;
759 uint32_t namelen;
760 uint32_t type;
761 char name[];
762 };
763
764 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
765 #define FUSE_DIRENT_ALIGN(x) \
766 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
767 #define FUSE_DIRENT_SIZE(d) \
768 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
769
770 struct fuse_direntplus {
771 struct fuse_entry_out entry_out;
772 struct fuse_dirent dirent;
773 };
774
775 #define FUSE_NAME_OFFSET_DIRENTPLUS \
776 offsetof(struct fuse_direntplus, dirent.name)
777 #define FUSE_DIRENTPLUS_SIZE(d) \
778 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
779
780 struct fuse_notify_inval_inode_out {
781 uint64_t ino;
782 int64_t off;
783 int64_t len;
784 };
785
786 struct fuse_notify_inval_entry_out {
787 uint64_t parent;
788 uint32_t namelen;
789 uint32_t padding;
790 };
791
792 struct fuse_notify_delete_out {
793 uint64_t parent;
794 uint64_t child;
795 uint32_t namelen;
796 uint32_t padding;
797 };
798
799 struct fuse_notify_store_out {
800 uint64_t nodeid;
801 uint64_t offset;
802 uint32_t size;
803 uint32_t padding;
804 };
805
806 struct fuse_notify_retrieve_out {
807 uint64_t notify_unique;
808 uint64_t nodeid;
809 uint64_t offset;
810 uint32_t size;
811 uint32_t padding;
812 };
813
814 /* Matches the size of fuse_write_in */
815 struct fuse_notify_retrieve_in {
816 uint64_t dummy1;
817 uint64_t offset;
818 uint32_t size;
819 uint32_t dummy2;
820 uint64_t dummy3;
821 uint64_t dummy4;
822 };
823
824 /* Device ioctls: */
825 #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t)
826
827 struct fuse_lseek_in {
828 uint64_t fh;
829 uint64_t offset;
830 uint32_t whence;
831 uint32_t padding;
832 };
833
834 struct fuse_lseek_out {
835 uint64_t offset;
836 };
837
838 struct fuse_copy_file_range_in {
839 uint64_t fh_in;
840 uint64_t off_in;
841 uint64_t nodeid_out;
842 uint64_t fh_out;
843 uint64_t off_out;
844 uint64_t len;
845 uint64_t flags;
846 };
847
848 #endif /* _LINUX_FUSE_H */