• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2     This file defines the kernel interface of FUSE
3     Copyright (C) 2001-2008  Miklos Szeredi <miklos@szeredi.hu>
4 
5     This program can be distributed under the terms of the GNU GPL.
6     See the file COPYING.
7 
8     This -- and only this -- header file may also be distributed under
9     the terms of the BSD Licence as follows:
10 
11     Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved.
12 
13     Redistribution and use in source and binary forms, with or without
14     modification, are permitted provided that the following conditions
15     are met:
16     1. Redistributions of source code must retain the above copyright
17        notice, this list of conditions and the following disclaimer.
18     2. Redistributions in binary form must reproduce the above copyright
19        notice, this list of conditions and the following disclaimer in the
20        documentation and/or other materials provided with the distribution.
21 
22     THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25     ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
26     FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27     DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28     OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32     SUCH DAMAGE.
33 */
34 
35 /*
36  * This file defines the kernel interface of FUSE
37  *
38  * Protocol changelog:
39  *
40  * 7.9:
41  *  - new fuse_getattr_in input argument of GETATTR
42  *  - add lk_flags in fuse_lk_in
43  *  - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
44  *  - add blksize field to fuse_attr
45  *  - add file flags field to fuse_read_in and fuse_write_in
46  *
47  * 7.10
48  *  - add nonseekable open flag
49  *
50  * 7.11
51  *  - add IOCTL message
52  *  - add unsolicited notification support
53  *  - add POLL message and NOTIFY_POLL notification
54  *
55  * 7.12
56  *  - add umask flag to input argument of open, mknod and mkdir
57  *  - add notification messages for invalidation of inodes and
58  *    directory entries
59  *
60  * 7.13
61  *  - make max number of background requests and congestion threshold
62  *    tunables
63  *
64  * 7.14
65  *  - add splice support to fuse device
66  *
67  * 7.15
68  *  - add store notify
69  *  - add retrieve notify
70  *
71  * 7.16
72  *  - add BATCH_FORGET request
73  *  - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
74  *    fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
75  *  - add FUSE_IOCTL_32BIT flag
76  *
77  * 7.17
78  *  - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
79  *
80  * 7.18
81  *  - add FUSE_IOCTL_DIR flag
82  *  - add FUSE_NOTIFY_DELETE
83  *
84  * 7.19
85  *  - add FUSE_FALLOCATE
86  *
87  * 7.20
88  *  - add FUSE_AUTO_INVAL_DATA
89  *
90  * 7.21
91  *  - add FUSE_READDIRPLUS
92  *  - send the requested events in POLL request
93  *
94  * 7.22
95  *  - add FUSE_ASYNC_DIO
96  *
97  * 7.23
98  *  - add FUSE_WRITEBACK_CACHE
99  *  - add time_gran to fuse_init_out
100  *  - add reserved space to fuse_init_out
101  *  - add FATTR_CTIME
102  *  - add ctime and ctimensec to fuse_setattr_in
103  *  - add FUSE_RENAME2 request
104  *  - add FUSE_NO_OPEN_SUPPORT flag
105  *
106  *  7.24
107  *  - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support
108  *
109  *  7.25
110  *  - add FUSE_PARALLEL_DIROPS
111  *
112  *  7.26
113  *  - add FUSE_HANDLE_KILLPRIV
114  *  - add FUSE_POSIX_ACL
115  */
116 
117 #ifndef _LINUX_FUSE_H
118 #define _LINUX_FUSE_H
119 
120 #ifdef __KERNEL__
121 #include <linux/types.h>
122 #else
123 #include <stdint.h>
124 #endif
125 
126 /*
127  * Version negotiation:
128  *
129  * Both the kernel and userspace send the version they support in the
130  * INIT request and reply respectively.
131  *
132  * If the major versions match then both shall use the smallest
133  * of the two minor versions for communication.
134  *
135  * If the kernel supports a larger major version, then userspace shall
136  * reply with the major version it supports, ignore the rest of the
137  * INIT message and expect a new INIT message from the kernel with a
138  * matching major version.
139  *
140  * If the library supports a larger major version, then it shall fall
141  * back to the major protocol version sent by the kernel for
142  * communication and reply with that major version (and an arbitrary
143  * supported minor version).
144  */
145 
146 /** Version number of this interface */
147 #define FUSE_KERNEL_VERSION 7
148 
149 /** Minor version number of this interface */
150 #define FUSE_KERNEL_MINOR_VERSION 26
151 
152 /** The node ID of the root inode */
153 #define FUSE_ROOT_ID 1
154 
155 /* Make sure all structures are padded to 64bit boundary, so 32bit
156    userspace works under 64bit kernels */
157 
158 struct fuse_attr {
159 	uint64_t	ino;
160 	uint64_t	size;
161 	uint64_t	blocks;
162 	uint64_t	atime;
163 	uint64_t	mtime;
164 	uint64_t	ctime;
165 	uint32_t	atimensec;
166 	uint32_t	mtimensec;
167 	uint32_t	ctimensec;
168 	uint32_t	mode;
169 	uint32_t	nlink;
170 	uint32_t	uid;
171 	uint32_t	gid;
172 	uint32_t	rdev;
173 	uint32_t	blksize;
174 	uint32_t	padding;
175 };
176 
177 struct fuse_kstatfs {
178 	uint64_t	blocks;
179 	uint64_t	bfree;
180 	uint64_t	bavail;
181 	uint64_t	files;
182 	uint64_t	ffree;
183 	uint32_t	bsize;
184 	uint32_t	namelen;
185 	uint32_t	frsize;
186 	uint32_t	padding;
187 	uint32_t	spare[6];
188 };
189 
190 struct fuse_file_lock {
191 	uint64_t	start;
192 	uint64_t	end;
193 	uint32_t	type;
194 	uint32_t	pid; /* tgid */
195 };
196 
197 /**
198  * Bitmasks for fuse_setattr_in.valid
199  */
200 #define FATTR_MODE	(1 << 0)
201 #define FATTR_UID	(1 << 1)
202 #define FATTR_GID	(1 << 2)
203 #define FATTR_SIZE	(1 << 3)
204 #define FATTR_ATIME	(1 << 4)
205 #define FATTR_MTIME	(1 << 5)
206 #define FATTR_FH	(1 << 6)
207 #define FATTR_ATIME_NOW	(1 << 7)
208 #define FATTR_MTIME_NOW	(1 << 8)
209 #define FATTR_LOCKOWNER	(1 << 9)
210 #define FATTR_CTIME	(1 << 10)
211 
212 /**
213  * Flags returned by the OPEN request
214  *
215  * FOPEN_DIRECT_IO: bypass page cache for this open file
216  * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
217  * FOPEN_NONSEEKABLE: the file is not seekable
218  */
219 #define FOPEN_DIRECT_IO		(1 << 0)
220 #define FOPEN_KEEP_CACHE	(1 << 1)
221 #define FOPEN_NONSEEKABLE	(1 << 2)
222 
223 /**
224  * INIT request/reply flags
225  *
226  * FUSE_ASYNC_READ: asynchronous read requests
227  * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
228  * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
229  * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
230  * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
231  * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
232  * FUSE_DONT_MASK: don't apply umask to file mode on create operations
233  * FUSE_SPLICE_WRITE: kernel supports splice write on the device
234  * FUSE_SPLICE_MOVE: kernel supports splice move on the device
235  * FUSE_SPLICE_READ: kernel supports splice read on the device
236  * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
237  * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
238  * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
239  * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
240  * FUSE_READDIRPLUS_AUTO: adaptive readdirplus
241  * FUSE_ASYNC_DIO: asynchronous direct I/O submission
242  * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
243  * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
244  * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir
245  * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc
246  * FUSE_POSIX_ACL: filesystem supports posix acls
247  */
248 #define FUSE_ASYNC_READ		(1 << 0)
249 #define FUSE_POSIX_LOCKS	(1 << 1)
250 #define FUSE_FILE_OPS		(1 << 2)
251 #define FUSE_ATOMIC_O_TRUNC	(1 << 3)
252 #define FUSE_EXPORT_SUPPORT	(1 << 4)
253 #define FUSE_BIG_WRITES		(1 << 5)
254 #define FUSE_DONT_MASK		(1 << 6)
255 #define FUSE_SPLICE_WRITE	(1 << 7)
256 #define FUSE_SPLICE_MOVE	(1 << 8)
257 #define FUSE_SPLICE_READ	(1 << 9)
258 #define FUSE_FLOCK_LOCKS	(1 << 10)
259 #define FUSE_HAS_IOCTL_DIR	(1 << 11)
260 #define FUSE_AUTO_INVAL_DATA	(1 << 12)
261 #define FUSE_DO_READDIRPLUS	(1 << 13)
262 #define FUSE_READDIRPLUS_AUTO	(1 << 14)
263 #define FUSE_ASYNC_DIO		(1 << 15)
264 #define FUSE_WRITEBACK_CACHE	(1 << 16)
265 #define FUSE_NO_OPEN_SUPPORT	(1 << 17)
266 #define FUSE_PARALLEL_DIROPS    (1 << 18)
267 #define FUSE_HANDLE_KILLPRIV	(1 << 19)
268 #define FUSE_POSIX_ACL		(1 << 20)
269 
270 /**
271  * CUSE INIT request/reply flags
272  *
273  * CUSE_UNRESTRICTED_IOCTL:  use unrestricted ioctl
274  */
275 #define CUSE_UNRESTRICTED_IOCTL	(1 << 0)
276 
277 /**
278  * Release flags
279  */
280 #define FUSE_RELEASE_FLUSH	(1 << 0)
281 #define FUSE_RELEASE_FLOCK_UNLOCK	(1 << 1)
282 
283 /**
284  * Getattr flags
285  */
286 #define FUSE_GETATTR_FH		(1 << 0)
287 
288 /**
289  * Lock flags
290  */
291 #define FUSE_LK_FLOCK		(1 << 0)
292 
293 /**
294  * WRITE flags
295  *
296  * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
297  * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
298  */
299 #define FUSE_WRITE_CACHE	(1 << 0)
300 #define FUSE_WRITE_LOCKOWNER	(1 << 1)
301 
302 /**
303  * Read flags
304  */
305 #define FUSE_READ_LOCKOWNER	(1 << 1)
306 
307 /**
308  * Ioctl flags
309  *
310  * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
311  * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
312  * FUSE_IOCTL_RETRY: retry with new iovecs
313  * FUSE_IOCTL_32BIT: 32bit ioctl
314  * FUSE_IOCTL_DIR: is a directory
315  *
316  * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
317  */
318 #define FUSE_IOCTL_COMPAT	(1 << 0)
319 #define FUSE_IOCTL_UNRESTRICTED	(1 << 1)
320 #define FUSE_IOCTL_RETRY	(1 << 2)
321 #define FUSE_IOCTL_32BIT	(1 << 3)
322 #define FUSE_IOCTL_DIR		(1 << 4)
323 
324 #define FUSE_IOCTL_MAX_IOV	256
325 
326 /**
327  * Poll flags
328  *
329  * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
330  */
331 #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
332 
333 enum fuse_opcode {
334 	FUSE_LOOKUP	   = 1,
335 	FUSE_FORGET	   = 2,  /* no reply */
336 	FUSE_GETATTR	   = 3,
337 	FUSE_SETATTR	   = 4,
338 	FUSE_READLINK	   = 5,
339 	FUSE_SYMLINK	   = 6,
340 	FUSE_MKNOD	   = 8,
341 	FUSE_MKDIR	   = 9,
342 	FUSE_UNLINK	   = 10,
343 	FUSE_RMDIR	   = 11,
344 	FUSE_RENAME	   = 12,
345 	FUSE_LINK	   = 13,
346 	FUSE_OPEN	   = 14,
347 	FUSE_READ	   = 15,
348 	FUSE_WRITE	   = 16,
349 	FUSE_STATFS	   = 17,
350 	FUSE_RELEASE       = 18,
351 	FUSE_FSYNC         = 20,
352 	FUSE_SETXATTR      = 21,
353 	FUSE_GETXATTR      = 22,
354 	FUSE_LISTXATTR     = 23,
355 	FUSE_REMOVEXATTR   = 24,
356 	FUSE_FLUSH         = 25,
357 	FUSE_INIT          = 26,
358 	FUSE_OPENDIR       = 27,
359 	FUSE_READDIR       = 28,
360 	FUSE_RELEASEDIR    = 29,
361 	FUSE_FSYNCDIR      = 30,
362 	FUSE_GETLK         = 31,
363 	FUSE_SETLK         = 32,
364 	FUSE_SETLKW        = 33,
365 	FUSE_ACCESS        = 34,
366 	FUSE_CREATE        = 35,
367 	FUSE_INTERRUPT     = 36,
368 	FUSE_BMAP          = 37,
369 	FUSE_DESTROY       = 38,
370 	FUSE_IOCTL         = 39,
371 	FUSE_POLL          = 40,
372 	FUSE_NOTIFY_REPLY  = 41,
373 	FUSE_BATCH_FORGET  = 42,
374 	FUSE_FALLOCATE     = 43,
375 	FUSE_READDIRPLUS   = 44,
376 	FUSE_RENAME2       = 45,
377 	FUSE_LSEEK         = 46,
378 
379 	/* CUSE specific operations */
380 	CUSE_INIT          = 4096,
381 };
382 
383 enum fuse_notify_code {
384 	FUSE_NOTIFY_POLL   = 1,
385 	FUSE_NOTIFY_INVAL_INODE = 2,
386 	FUSE_NOTIFY_INVAL_ENTRY = 3,
387 	FUSE_NOTIFY_STORE = 4,
388 	FUSE_NOTIFY_RETRIEVE = 5,
389 	FUSE_NOTIFY_DELETE = 6,
390 	FUSE_NOTIFY_CODE_MAX,
391 };
392 
393 /* The read buffer is required to be at least 8k, but may be much larger */
394 #define FUSE_MIN_READ_BUFFER 8192
395 
396 #define FUSE_COMPAT_ENTRY_OUT_SIZE 120
397 
398 struct fuse_entry_out {
399 	uint64_t	nodeid;		/* Inode ID */
400 	uint64_t	generation;	/* Inode generation: nodeid:gen must
401 					   be unique for the fs's lifetime */
402 	uint64_t	entry_valid;	/* Cache timeout for the name */
403 	uint64_t	attr_valid;	/* Cache timeout for the attributes */
404 	uint32_t	entry_valid_nsec;
405 	uint32_t	attr_valid_nsec;
406 	struct fuse_attr attr;
407 };
408 
409 struct fuse_forget_in {
410 	uint64_t	nlookup;
411 };
412 
413 struct fuse_forget_one {
414 	uint64_t	nodeid;
415 	uint64_t	nlookup;
416 };
417 
418 struct fuse_batch_forget_in {
419 	uint32_t	count;
420 	uint32_t	dummy;
421 };
422 
423 struct fuse_getattr_in {
424 	uint32_t	getattr_flags;
425 	uint32_t	dummy;
426 	uint64_t	fh;
427 };
428 
429 #define FUSE_COMPAT_ATTR_OUT_SIZE 96
430 
431 struct fuse_attr_out {
432 	uint64_t	attr_valid;	/* Cache timeout for the attributes */
433 	uint32_t	attr_valid_nsec;
434 	uint32_t	dummy;
435 	struct fuse_attr attr;
436 };
437 
438 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
439 
440 struct fuse_mknod_in {
441 	uint32_t	mode;
442 	uint32_t	rdev;
443 	uint32_t	umask;
444 	uint32_t	padding;
445 };
446 
447 struct fuse_mkdir_in {
448 	uint32_t	mode;
449 	uint32_t	umask;
450 };
451 
452 struct fuse_rename_in {
453 	uint64_t	newdir;
454 };
455 
456 struct fuse_rename2_in {
457 	uint64_t	newdir;
458 	uint32_t	flags;
459 	uint32_t	padding;
460 };
461 
462 struct fuse_link_in {
463 	uint64_t	oldnodeid;
464 };
465 
466 struct fuse_setattr_in {
467 	uint32_t	valid;
468 	uint32_t	padding;
469 	uint64_t	fh;
470 	uint64_t	size;
471 	uint64_t	lock_owner;
472 	uint64_t	atime;
473 	uint64_t	mtime;
474 	uint64_t	ctime;
475 	uint32_t	atimensec;
476 	uint32_t	mtimensec;
477 	uint32_t	ctimensec;
478 	uint32_t	mode;
479 	uint32_t	unused4;
480 	uint32_t	uid;
481 	uint32_t	gid;
482 	uint32_t	unused5;
483 };
484 
485 struct fuse_open_in {
486 	uint32_t	flags;
487 	uint32_t	unused;
488 };
489 
490 struct fuse_create_in {
491 	uint32_t	flags;
492 	uint32_t	mode;
493 	uint32_t	umask;
494 	uint32_t	padding;
495 };
496 
497 struct fuse_open_out {
498 	uint64_t	fh;
499 	uint32_t	open_flags;
500 	uint32_t	padding;
501 };
502 
503 struct fuse_release_in {
504 	uint64_t	fh;
505 	uint32_t	flags;
506 	uint32_t	release_flags;
507 	uint64_t	lock_owner;
508 };
509 
510 struct fuse_flush_in {
511 	uint64_t	fh;
512 	uint32_t	unused;
513 	uint32_t	padding;
514 	uint64_t	lock_owner;
515 };
516 
517 struct fuse_read_in {
518 	uint64_t	fh;
519 	uint64_t	offset;
520 	uint32_t	size;
521 	uint32_t	read_flags;
522 	uint64_t	lock_owner;
523 	uint32_t	flags;
524 	uint32_t	padding;
525 };
526 
527 #define FUSE_COMPAT_WRITE_IN_SIZE 24
528 
529 struct fuse_write_in {
530 	uint64_t	fh;
531 	uint64_t	offset;
532 	uint32_t	size;
533 	uint32_t	write_flags;
534 	uint64_t	lock_owner;
535 	uint32_t	flags;
536 	uint32_t	padding;
537 };
538 
539 struct fuse_write_out {
540 	uint32_t	size;
541 	uint32_t	padding;
542 };
543 
544 #define FUSE_COMPAT_STATFS_SIZE 48
545 
546 struct fuse_statfs_out {
547 	struct fuse_kstatfs st;
548 };
549 
550 struct fuse_fsync_in {
551 	uint64_t	fh;
552 	uint32_t	fsync_flags;
553 	uint32_t	padding;
554 };
555 
556 struct fuse_setxattr_in {
557 	uint32_t	size;
558 	uint32_t	flags;
559 };
560 
561 struct fuse_getxattr_in {
562 	uint32_t	size;
563 	uint32_t	padding;
564 };
565 
566 struct fuse_getxattr_out {
567 	uint32_t	size;
568 	uint32_t	padding;
569 };
570 
571 struct fuse_lk_in {
572 	uint64_t	fh;
573 	uint64_t	owner;
574 	struct fuse_file_lock lk;
575 	uint32_t	lk_flags;
576 	uint32_t	padding;
577 };
578 
579 struct fuse_lk_out {
580 	struct fuse_file_lock lk;
581 };
582 
583 struct fuse_access_in {
584 	uint32_t	mask;
585 	uint32_t	padding;
586 };
587 
588 struct fuse_init_in {
589 	uint32_t	major;
590 	uint32_t	minor;
591 	uint32_t	max_readahead;
592 	uint32_t	flags;
593 };
594 
595 #define FUSE_COMPAT_INIT_OUT_SIZE 8
596 #define FUSE_COMPAT_22_INIT_OUT_SIZE 24
597 
598 struct fuse_init_out {
599 	uint32_t	major;
600 	uint32_t	minor;
601 	uint32_t	max_readahead;
602 	uint32_t	flags;
603 	uint16_t	max_background;
604 	uint16_t	congestion_threshold;
605 	uint32_t	max_write;
606 	uint32_t	time_gran;
607 	uint32_t	unused[9];
608 };
609 
610 #define CUSE_INIT_INFO_MAX 4096
611 
612 struct cuse_init_in {
613 	uint32_t	major;
614 	uint32_t	minor;
615 	uint32_t	unused;
616 	uint32_t	flags;
617 };
618 
619 struct cuse_init_out {
620 	uint32_t	major;
621 	uint32_t	minor;
622 	uint32_t	unused;
623 	uint32_t	flags;
624 	uint32_t	max_read;
625 	uint32_t	max_write;
626 	uint32_t	dev_major;		/* chardev major */
627 	uint32_t	dev_minor;		/* chardev minor */
628 	uint32_t	spare[10];
629 };
630 
631 struct fuse_interrupt_in {
632 	uint64_t	unique;
633 };
634 
635 struct fuse_bmap_in {
636 	uint64_t	block;
637 	uint32_t	blocksize;
638 	uint32_t	padding;
639 };
640 
641 struct fuse_bmap_out {
642 	uint64_t	block;
643 };
644 
645 struct fuse_ioctl_in {
646 	uint64_t	fh;
647 	uint32_t	flags;
648 	uint32_t	cmd;
649 	uint64_t	arg;
650 	uint32_t	in_size;
651 	uint32_t	out_size;
652 };
653 
654 struct fuse_ioctl_iovec {
655 	uint64_t	base;
656 	uint64_t	len;
657 };
658 
659 struct fuse_ioctl_out {
660 	int32_t		result;
661 	uint32_t	flags;
662 	uint32_t	in_iovs;
663 	uint32_t	out_iovs;
664 };
665 
666 struct fuse_poll_in {
667 	uint64_t	fh;
668 	uint64_t	kh;
669 	uint32_t	flags;
670 	uint32_t	events;
671 };
672 
673 struct fuse_poll_out {
674 	uint32_t	revents;
675 	uint32_t	padding;
676 };
677 
678 struct fuse_notify_poll_wakeup_out {
679 	uint64_t	kh;
680 };
681 
682 struct fuse_fallocate_in {
683 	uint64_t	fh;
684 	uint64_t	offset;
685 	uint64_t	length;
686 	uint32_t	mode;
687 	uint32_t	padding;
688 };
689 
690 struct fuse_in_header {
691 	uint32_t	len;
692 	uint32_t	opcode;
693 	uint64_t	unique;
694 	uint64_t	nodeid;
695 	uint32_t	uid;
696 	uint32_t	gid;
697 	uint32_t	pid;
698 	uint32_t	padding;
699 };
700 
701 struct fuse_out_header {
702 	uint32_t	len;
703 	int32_t		error;
704 	uint64_t	unique;
705 };
706 
707 struct fuse_dirent {
708 	uint64_t	ino;
709 	uint64_t	off;
710 	uint32_t	namelen;
711 	uint32_t	type;
712 	char name[];
713 };
714 
715 #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
716 #define FUSE_DIRENT_ALIGN(x) \
717 	(((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
718 #define FUSE_DIRENT_SIZE(d) \
719 	FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
720 
721 struct fuse_direntplus {
722 	struct fuse_entry_out entry_out;
723 	struct fuse_dirent dirent;
724 };
725 
726 #define FUSE_NAME_OFFSET_DIRENTPLUS \
727 	offsetof(struct fuse_direntplus, dirent.name)
728 #define FUSE_DIRENTPLUS_SIZE(d) \
729 	FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
730 
731 struct fuse_notify_inval_inode_out {
732 	uint64_t	ino;
733 	int64_t		off;
734 	int64_t		len;
735 };
736 
737 struct fuse_notify_inval_entry_out {
738 	uint64_t	parent;
739 	uint32_t	namelen;
740 	uint32_t	padding;
741 };
742 
743 struct fuse_notify_delete_out {
744 	uint64_t	parent;
745 	uint64_t	child;
746 	uint32_t	namelen;
747 	uint32_t	padding;
748 };
749 
750 struct fuse_notify_store_out {
751 	uint64_t	nodeid;
752 	uint64_t	offset;
753 	uint32_t	size;
754 	uint32_t	padding;
755 };
756 
757 struct fuse_notify_retrieve_out {
758 	uint64_t	notify_unique;
759 	uint64_t	nodeid;
760 	uint64_t	offset;
761 	uint32_t	size;
762 	uint32_t	padding;
763 };
764 
765 /* Matches the size of fuse_write_in */
766 struct fuse_notify_retrieve_in {
767 	uint64_t	dummy1;
768 	uint64_t	offset;
769 	uint32_t	size;
770 	uint32_t	dummy2;
771 	uint64_t	dummy3;
772 	uint64_t	dummy4;
773 };
774 
775 /* Device ioctls: */
776 #define FUSE_DEV_IOC_CLONE	_IOR(229, 0, uint32_t)
777 
778 struct fuse_lseek_in {
779 	uint64_t	fh;
780 	uint64_t	offset;
781 	uint32_t	whence;
782 	uint32_t	padding;
783 };
784 
785 struct fuse_lseek_out {
786 	uint64_t	offset;
787 };
788 
789 #endif /* _LINUX_FUSE_H */
790