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qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
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 * 7.1:
42 * - add the following messages:
43 * FUSE_SETATTR, FUSE_SYMLINK, FUSE_MKNOD, FUSE_MKDIR, FUSE_UNLINK,
44 * FUSE_RMDIR, FUSE_RENAME, FUSE_LINK, FUSE_OPEN, FUSE_READ, FUSE_WRITE,
45 * FUSE_RELEASE, FUSE_FSYNC, FUSE_FLUSH, FUSE_SETXATTR, FUSE_GETXATTR,
46 * FUSE_LISTXATTR, FUSE_REMOVEXATTR, FUSE_OPENDIR, FUSE_READDIR,
47 * FUSE_RELEASEDIR
48 * - add padding to messages to accommodate 32-bit servers on 64-bit kernels
49 *
50 * 7.2:
51 * - add FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE flags
52 * - add FUSE_FSYNCDIR message
53 *
54 * 7.3:
55 * - add FUSE_ACCESS message
56 * - add FUSE_CREATE message
57 * - add filehandle to fuse_setattr_in
58 *
59 * 7.4:
60 * - add frsize to fuse_kstatfs
61 * - clean up request size limit checking
62 *
63 * 7.5:
64 * - add flags and max_write to fuse_init_out
65 *
66 * 7.6:
67 * - add max_readahead to fuse_init_in and fuse_init_out
68 *
69 * 7.7:
70 * - add FUSE_INTERRUPT message
71 * - add POSIX file lock support
72 *
73 * 7.8:
74 * - add lock_owner and flags fields to fuse_release_in
75 * - add FUSE_BMAP message
76 * - add FUSE_DESTROY message
77 *
78 * 7.9:
79 * - new fuse_getattr_in input argument of GETATTR
80 * - add lk_flags in fuse_lk_in
81 * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
82 * - add blksize field to fuse_attr
83 * - add file flags field to fuse_read_in and fuse_write_in
84 * - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in
85 *
86 * 7.10
87 * - add nonseekable open flag
88 *
89 * 7.11
90 * - add IOCTL message
91 * - add unsolicited notification support
92 * - add POLL message and NOTIFY_POLL notification
93 *
94 * 7.12
95 * - add umask flag to input argument of create, mknod and mkdir
96 * - add notification messages for invalidation of inodes and
97 * directory entries
98 *
99 * 7.13
100 * - make max number of background requests and congestion threshold
101 * tunables
102 *
103 * 7.14
104 * - add splice support to fuse device
105 *
106 * 7.15
107 * - add store notify
108 * - add retrieve notify
109 *
110 * 7.16
111 * - add BATCH_FORGET request
112 * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
113 * fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
114 * - add FUSE_IOCTL_32BIT flag
115 *
116 * 7.17
117 * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
118 *
119 * 7.18
120 * - add FUSE_IOCTL_DIR flag
121 * - add FUSE_NOTIFY_DELETE
122 *
123 * 7.19
124 * - add FUSE_FALLOCATE
125 *
126 * 7.20
127 * - add FUSE_AUTO_INVAL_DATA
128 *
129 * 7.21
130 * - add FUSE_READDIRPLUS
131 * - send the requested events in POLL request
132 *
133 * 7.22
134 * - add FUSE_ASYNC_DIO
135 *
136 * 7.23
137 * - add FUSE_WRITEBACK_CACHE
138 * - add time_gran to fuse_init_out
139 * - add reserved space to fuse_init_out
140 * - add FATTR_CTIME
141 * - add ctime and ctimensec to fuse_setattr_in
142 * - add FUSE_RENAME2 request
143 * - add FUSE_NO_OPEN_SUPPORT flag
144 *
145 * 7.24
146 * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support
147 *
148 * 7.25
149 * - add FUSE_PARALLEL_DIROPS
150 *
151 * 7.26
152 * - add FUSE_HANDLE_KILLPRIV
153 * - add FUSE_POSIX_ACL
154 *
155 * 7.27
156 * - add FUSE_ABORT_ERROR
157 *
158 * 7.28
159 * - add FUSE_COPY_FILE_RANGE
160 * - add FOPEN_CACHE_DIR
161 * - add FUSE_MAX_PAGES, add max_pages to init_out
162 * - add FUSE_CACHE_SYMLINKS
163 *
164 * 7.29
165 * - add FUSE_NO_OPENDIR_SUPPORT flag
166 *
167 * 7.30
168 * - add FUSE_EXPLICIT_INVAL_DATA
169 * - add FUSE_IOCTL_COMPAT_X32
170 *
171 * 7.31
172 * - add FUSE_WRITE_KILL_PRIV flag
173 * - add FUSE_SETUPMAPPING and FUSE_REMOVEMAPPING
174 * - add map_alignment to fuse_init_out, add FUSE_MAP_ALIGNMENT flag
175 */
176
177#ifndef _LINUX_FUSE_H
178#define _LINUX_FUSE_H
179
180#include <stdint.h>
181
182/*
183 * Version negotiation:
184 *
185 * Both the kernel and userspace send the version they support in the
186 * INIT request and reply respectively.
187 *
188 * If the major versions match then both shall use the smallest
189 * of the two minor versions for communication.
190 *
191 * If the kernel supports a larger major version, then userspace shall
192 * reply with the major version it supports, ignore the rest of the
193 * INIT message and expect a new INIT message from the kernel with a
194 * matching major version.
195 *
196 * If the library supports a larger major version, then it shall fall
197 * back to the major protocol version sent by the kernel for
198 * communication and reply with that major version (and an arbitrary
199 * supported minor version).
200 */
201
202/** Version number of this interface */
203#define FUSE_KERNEL_VERSION 7
204
205/** Minor version number of this interface */
206#define FUSE_KERNEL_MINOR_VERSION 31
207
208/** The node ID of the root inode */
209#define FUSE_ROOT_ID 1
210
211/* Make sure all structures are padded to 64bit boundary, so 32bit
212 userspace works under 64bit kernels */
213
214struct fuse_attr {
215 uint64_t ino;
216 uint64_t size;
217 uint64_t blocks;
218 uint64_t atime;
219 uint64_t mtime;
220 uint64_t ctime;
221 uint32_t atimensec;
222 uint32_t mtimensec;
223 uint32_t ctimensec;
224 uint32_t mode;
225 uint32_t nlink;
226 uint32_t uid;
227 uint32_t gid;
228 uint32_t rdev;
229 uint32_t blksize;
230 uint32_t padding;
231};
232
233struct fuse_kstatfs {
234 uint64_t blocks;
235 uint64_t bfree;
236 uint64_t bavail;
237 uint64_t files;
238 uint64_t ffree;
239 uint32_t bsize;
240 uint32_t namelen;
241 uint32_t frsize;
242 uint32_t padding;
243 uint32_t spare[6];
244};
245
246struct fuse_file_lock {
247 uint64_t start;
248 uint64_t end;
249 uint32_t type;
250 uint32_t pid; /* tgid */
251};
252
253/**
254 * Bitmasks for fuse_setattr_in.valid
255 */
256#define FATTR_MODE (1 << 0)
257#define FATTR_UID (1 << 1)
258#define FATTR_GID (1 << 2)
259#define FATTR_SIZE (1 << 3)
260#define FATTR_ATIME (1 << 4)
261#define FATTR_MTIME (1 << 5)
262#define FATTR_FH (1 << 6)
263#define FATTR_ATIME_NOW (1 << 7)
264#define FATTR_MTIME_NOW (1 << 8)
265#define FATTR_LOCKOWNER (1 << 9)
266#define FATTR_CTIME (1 << 10)
267
268/**
269 * Flags returned by the OPEN request
270 *
271 * FOPEN_DIRECT_IO: bypass page cache for this open file
272 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
273 * FOPEN_NONSEEKABLE: the file is not seekable
274 * FOPEN_CACHE_DIR: allow caching this directory
275 * FOPEN_STREAM: the file is stream-like (no file position at all)
276 */
277#define FOPEN_DIRECT_IO (1 << 0)
278#define FOPEN_KEEP_CACHE (1 << 1)
279#define FOPEN_NONSEEKABLE (1 << 2)
280#define FOPEN_CACHE_DIR (1 << 3)
281#define FOPEN_STREAM (1 << 4)
282
283/**
284 * INIT request/reply flags
285 *
286 * FUSE_ASYNC_READ: asynchronous read requests
287 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
288 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
289 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
290 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
291 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
292 * FUSE_DONT_MASK: don't apply umask to file mode on create operations
293 * FUSE_SPLICE_WRITE: kernel supports splice write on the device
294 * FUSE_SPLICE_MOVE: kernel supports splice move on the device
295 * FUSE_SPLICE_READ: kernel supports splice read on the device
296 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
297 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
298 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
299 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
300 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus
301 * FUSE_ASYNC_DIO: asynchronous direct I/O submission
302 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
303 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
304 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir
305 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc
306 * FUSE_POSIX_ACL: filesystem supports posix acls
307 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED
308 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages
309 * FUSE_CACHE_SYMLINKS: cache READLINK responses
310 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir
311 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request
312 * FUSE_MAP_ALIGNMENT: map_alignment field is valid
313 */
314#define FUSE_ASYNC_READ (1 << 0)
315#define FUSE_POSIX_LOCKS (1 << 1)
316#define FUSE_FILE_OPS (1 << 2)
317#define FUSE_ATOMIC_O_TRUNC (1 << 3)
318#define FUSE_EXPORT_SUPPORT (1 << 4)
319#define FUSE_BIG_WRITES (1 << 5)
320#define FUSE_DONT_MASK (1 << 6)
321#define FUSE_SPLICE_WRITE (1 << 7)
322#define FUSE_SPLICE_MOVE (1 << 8)
323#define FUSE_SPLICE_READ (1 << 9)
324#define FUSE_FLOCK_LOCKS (1 << 10)
325#define FUSE_HAS_IOCTL_DIR (1 << 11)
326#define FUSE_AUTO_INVAL_DATA (1 << 12)
327#define FUSE_DO_READDIRPLUS (1 << 13)
328#define FUSE_READDIRPLUS_AUTO (1 << 14)
329#define FUSE_ASYNC_DIO (1 << 15)
330#define FUSE_WRITEBACK_CACHE (1 << 16)
331#define FUSE_NO_OPEN_SUPPORT (1 << 17)
332#define FUSE_PARALLEL_DIROPS (1 << 18)
333#define FUSE_HANDLE_KILLPRIV (1 << 19)
334#define FUSE_POSIX_ACL (1 << 20)
335#define FUSE_ABORT_ERROR (1 << 21)
336#define FUSE_MAX_PAGES (1 << 22)
337#define FUSE_CACHE_SYMLINKS (1 << 23)
338#define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
339#define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
340#define FUSE_MAP_ALIGNMENT (1 << 26)
341
342/**
343 * CUSE INIT request/reply flags
344 *
345 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl
346 */
347#define CUSE_UNRESTRICTED_IOCTL (1 << 0)
348
349/**
350 * Release flags
351 */
352#define FUSE_RELEASE_FLUSH (1 << 0)
353#define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
354
355/**
356 * Getattr flags
357 */
358#define FUSE_GETATTR_FH (1 << 0)
359
360/**
361 * Lock flags
362 */
363#define FUSE_LK_FLOCK (1 << 0)
364
365/**
366 * WRITE flags
367 *
368 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
369 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
370 * FUSE_WRITE_KILL_PRIV: kill suid and sgid bits
371 */
372#define FUSE_WRITE_CACHE (1 << 0)
373#define FUSE_WRITE_LOCKOWNER (1 << 1)
374#define FUSE_WRITE_KILL_PRIV (1 << 2)
375
376/**
377 * Read flags
378 */
379#define FUSE_READ_LOCKOWNER (1 << 1)
380
381/**
382 * Ioctl flags
383 *
384 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
385 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
386 * FUSE_IOCTL_RETRY: retry with new iovecs
387 * FUSE_IOCTL_32BIT: 32bit ioctl
388 * FUSE_IOCTL_DIR: is a directory
389 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t)
390 *
391 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
392 */
393#define FUSE_IOCTL_COMPAT (1 << 0)
394#define FUSE_IOCTL_UNRESTRICTED (1 << 1)
395#define FUSE_IOCTL_RETRY (1 << 2)
396#define FUSE_IOCTL_32BIT (1 << 3)
397#define FUSE_IOCTL_DIR (1 << 4)
398#define FUSE_IOCTL_COMPAT_X32 (1 << 5)
399
400#define FUSE_IOCTL_MAX_IOV 256
401
402/**
403 * Poll flags
404 *
405 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
406 */
407#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
408
409/**
410 * Fsync flags
411 *
412 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
413 */
414#define FUSE_FSYNC_FDATASYNC (1 << 0)
415
416enum fuse_opcode {
417 FUSE_LOOKUP = 1,
418 FUSE_FORGET = 2, /* no reply */
419 FUSE_GETATTR = 3,
420 FUSE_SETATTR = 4,
421 FUSE_READLINK = 5,
422 FUSE_SYMLINK = 6,
423 FUSE_MKNOD = 8,
424 FUSE_MKDIR = 9,
425 FUSE_UNLINK = 10,
426 FUSE_RMDIR = 11,
427 FUSE_RENAME = 12,
428 FUSE_LINK = 13,
429 FUSE_OPEN = 14,
430 FUSE_READ = 15,
431 FUSE_WRITE = 16,
432 FUSE_STATFS = 17,
433 FUSE_RELEASE = 18,
434 FUSE_FSYNC = 20,
435 FUSE_SETXATTR = 21,
436 FUSE_GETXATTR = 22,
437 FUSE_LISTXATTR = 23,
438 FUSE_REMOVEXATTR = 24,
439 FUSE_FLUSH = 25,
440 FUSE_INIT = 26,
441 FUSE_OPENDIR = 27,
442 FUSE_READDIR = 28,
443 FUSE_RELEASEDIR = 29,
444 FUSE_FSYNCDIR = 30,
445 FUSE_GETLK = 31,
446 FUSE_SETLK = 32,
447 FUSE_SETLKW = 33,
448 FUSE_ACCESS = 34,
449 FUSE_CREATE = 35,
450 FUSE_INTERRUPT = 36,
451 FUSE_BMAP = 37,
452 FUSE_DESTROY = 38,
453 FUSE_IOCTL = 39,
454 FUSE_POLL = 40,
455 FUSE_NOTIFY_REPLY = 41,
456 FUSE_BATCH_FORGET = 42,
457 FUSE_FALLOCATE = 43,
458 FUSE_READDIRPLUS = 44,
459 FUSE_RENAME2 = 45,
460 FUSE_LSEEK = 46,
461 FUSE_COPY_FILE_RANGE = 47,
462 FUSE_SETUPMAPPING = 48,
463 FUSE_REMOVEMAPPING = 49,
464
465 /* CUSE specific operations */
466 CUSE_INIT = 4096,
467
468 /* Reserved opcodes: helpful to detect structure endian-ness */
469 CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */
470 FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */
471};
472
473enum fuse_notify_code {
474 FUSE_NOTIFY_POLL = 1,
475 FUSE_NOTIFY_INVAL_INODE = 2,
476 FUSE_NOTIFY_INVAL_ENTRY = 3,
477 FUSE_NOTIFY_STORE = 4,
478 FUSE_NOTIFY_RETRIEVE = 5,
479 FUSE_NOTIFY_DELETE = 6,
480 FUSE_NOTIFY_CODE_MAX,
481};
482
483/* The read buffer is required to be at least 8k, but may be much larger */
484#define FUSE_MIN_READ_BUFFER 8192
485
486#define FUSE_COMPAT_ENTRY_OUT_SIZE 120
487
488struct fuse_entry_out {
489 uint64_t nodeid; /* Inode ID */
490 uint64_t generation; /* Inode generation: nodeid:gen must
491 be unique for the fs's lifetime */
492 uint64_t entry_valid; /* Cache timeout for the name */
493 uint64_t attr_valid; /* Cache timeout for the attributes */
494 uint32_t entry_valid_nsec;
495 uint32_t attr_valid_nsec;
496 struct fuse_attr attr;
497};
498
499struct fuse_forget_in {
500 uint64_t nlookup;
501};
502
503struct fuse_forget_one {
504 uint64_t nodeid;
505 uint64_t nlookup;
506};
507
508struct fuse_batch_forget_in {
509 uint32_t count;
510 uint32_t dummy;
511};
512
513struct fuse_getattr_in {
514 uint32_t getattr_flags;
515 uint32_t dummy;
516 uint64_t fh;
517};
518
519#define FUSE_COMPAT_ATTR_OUT_SIZE 96
520
521struct fuse_attr_out {
522 uint64_t attr_valid; /* Cache timeout for the attributes */
523 uint32_t attr_valid_nsec;
524 uint32_t dummy;
525 struct fuse_attr attr;
526};
527
528#define FUSE_COMPAT_MKNOD_IN_SIZE 8
529
530struct fuse_mknod_in {
531 uint32_t mode;
532 uint32_t rdev;
533 uint32_t umask;
534 uint32_t padding;
535};
536
537struct fuse_mkdir_in {
538 uint32_t mode;
539 uint32_t umask;
540};
541
542struct fuse_rename_in {
543 uint64_t newdir;
544};
545
546struct fuse_rename2_in {
547 uint64_t newdir;
548 uint32_t flags;
549 uint32_t padding;
550};
551
552struct fuse_link_in {
553 uint64_t oldnodeid;
554};
555
556struct fuse_setattr_in {
557 uint32_t valid;
558 uint32_t padding;
559 uint64_t fh;
560 uint64_t size;
561 uint64_t lock_owner;
562 uint64_t atime;
563 uint64_t mtime;
564 uint64_t ctime;
565 uint32_t atimensec;
566 uint32_t mtimensec;
567 uint32_t ctimensec;
568 uint32_t mode;
569 uint32_t unused4;
570 uint32_t uid;
571 uint32_t gid;
572 uint32_t unused5;
573};
574
575struct fuse_open_in {
576 uint32_t flags;
577 uint32_t unused;
578};
579
580struct fuse_create_in {
581 uint32_t flags;
582 uint32_t mode;
583 uint32_t umask;
584 uint32_t padding;
585};
586
587struct fuse_open_out {
588 uint64_t fh;
589 uint32_t open_flags;
590 uint32_t padding;
591};
592
593struct fuse_release_in {
594 uint64_t fh;
595 uint32_t flags;
596 uint32_t release_flags;
597 uint64_t lock_owner;
598};
599
600struct fuse_flush_in {
601 uint64_t fh;
602 uint32_t unused;
603 uint32_t padding;
604 uint64_t lock_owner;
605};
606
607struct fuse_read_in {
608 uint64_t fh;
609 uint64_t offset;
610 uint32_t size;
611 uint32_t read_flags;
612 uint64_t lock_owner;
613 uint32_t flags;
614 uint32_t padding;
615};
616
617#define FUSE_COMPAT_WRITE_IN_SIZE 24
618
619struct fuse_write_in {
620 uint64_t fh;
621 uint64_t offset;
622 uint32_t size;
623 uint32_t write_flags;
624 uint64_t lock_owner;
625 uint32_t flags;
626 uint32_t padding;
627};
628
629struct fuse_write_out {
630 uint32_t size;
631 uint32_t padding;
632};
633
634#define FUSE_COMPAT_STATFS_SIZE 48
635
636struct fuse_statfs_out {
637 struct fuse_kstatfs st;
638};
639
640struct fuse_fsync_in {
641 uint64_t fh;
642 uint32_t fsync_flags;
643 uint32_t padding;
644};
645
646struct fuse_setxattr_in {
647 uint32_t size;
648 uint32_t flags;
649};
650
651struct fuse_getxattr_in {
652 uint32_t size;
653 uint32_t padding;
654};
655
656struct fuse_getxattr_out {
657 uint32_t size;
658 uint32_t padding;
659};
660
661struct fuse_lk_in {
662 uint64_t fh;
663 uint64_t owner;
664 struct fuse_file_lock lk;
665 uint32_t lk_flags;
666 uint32_t padding;
667};
668
669struct fuse_lk_out {
670 struct fuse_file_lock lk;
671};
672
673struct fuse_access_in {
674 uint32_t mask;
675 uint32_t padding;
676};
677
678struct fuse_init_in {
679 uint32_t major;
680 uint32_t minor;
681 uint32_t max_readahead;
682 uint32_t flags;
683};
684
685#define FUSE_COMPAT_INIT_OUT_SIZE 8
686#define FUSE_COMPAT_22_INIT_OUT_SIZE 24
687
688struct fuse_init_out {
689 uint32_t major;
690 uint32_t minor;
691 uint32_t max_readahead;
692 uint32_t flags;
693 uint16_t max_background;
694 uint16_t congestion_threshold;
695 uint32_t max_write;
696 uint32_t time_gran;
697 uint16_t max_pages;
698 uint16_t map_alignment;
699 uint32_t unused[8];
700};
701
702#define CUSE_INIT_INFO_MAX 4096
703
704struct cuse_init_in {
705 uint32_t major;
706 uint32_t minor;
707 uint32_t unused;
708 uint32_t flags;
709};
710
711struct cuse_init_out {
712 uint32_t major;
713 uint32_t minor;
714 uint32_t unused;
715 uint32_t flags;
716 uint32_t max_read;
717 uint32_t max_write;
718 uint32_t dev_major; /* chardev major */
719 uint32_t dev_minor; /* chardev minor */
720 uint32_t spare[10];
721};
722
723struct fuse_interrupt_in {
724 uint64_t unique;
725};
726
727struct fuse_bmap_in {
728 uint64_t block;
729 uint32_t blocksize;
730 uint32_t padding;
731};
732
733struct fuse_bmap_out {
734 uint64_t block;
735};
736
737struct fuse_ioctl_in {
738 uint64_t fh;
739 uint32_t flags;
740 uint32_t cmd;
741 uint64_t arg;
742 uint32_t in_size;
743 uint32_t out_size;
744};
745
746struct fuse_ioctl_iovec {
747 uint64_t base;
748 uint64_t len;
749};
750
751struct fuse_ioctl_out {
752 int32_t result;
753 uint32_t flags;
754 uint32_t in_iovs;
755 uint32_t out_iovs;
756};
757
758struct fuse_poll_in {
759 uint64_t fh;
760 uint64_t kh;
761 uint32_t flags;
762 uint32_t events;
763};
764
765struct fuse_poll_out {
766 uint32_t revents;
767 uint32_t padding;
768};
769
770struct fuse_notify_poll_wakeup_out {
771 uint64_t kh;
772};
773
774struct fuse_fallocate_in {
775 uint64_t fh;
776 uint64_t offset;
777 uint64_t length;
778 uint32_t mode;
779 uint32_t padding;
780};
781
782struct fuse_in_header {
783 uint32_t len;
784 uint32_t opcode;
785 uint64_t unique;
786 uint64_t nodeid;
787 uint32_t uid;
788 uint32_t gid;
789 uint32_t pid;
790 uint32_t padding;
791};
792
793struct fuse_out_header {
794 uint32_t len;
795 int32_t error;
796 uint64_t unique;
797};
798
799struct fuse_dirent {
800 uint64_t ino;
801 uint64_t off;
802 uint32_t namelen;
803 uint32_t type;
804 char name[];
805};
806
807#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
808#define FUSE_DIRENT_ALIGN(x) \
809 (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
810#define FUSE_DIRENT_SIZE(d) \
811 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
812
813struct fuse_direntplus {
814 struct fuse_entry_out entry_out;
815 struct fuse_dirent dirent;
816};
817
818#define FUSE_NAME_OFFSET_DIRENTPLUS \
819 offsetof(struct fuse_direntplus, dirent.name)
820#define FUSE_DIRENTPLUS_SIZE(d) \
821 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
822
823struct fuse_notify_inval_inode_out {
824 uint64_t ino;
825 int64_t off;
826 int64_t len;
827};
828
829struct fuse_notify_inval_entry_out {
830 uint64_t parent;
831 uint32_t namelen;
832 uint32_t padding;
833};
834
835struct fuse_notify_delete_out {
836 uint64_t parent;
837 uint64_t child;
838 uint32_t namelen;
839 uint32_t padding;
840};
841
842struct fuse_notify_store_out {
843 uint64_t nodeid;
844 uint64_t offset;
845 uint32_t size;
846 uint32_t padding;
847};
848
849struct fuse_notify_retrieve_out {
850 uint64_t notify_unique;
851 uint64_t nodeid;
852 uint64_t offset;
853 uint32_t size;
854 uint32_t padding;
855};
856
857/* Matches the size of fuse_write_in */
858struct fuse_notify_retrieve_in {
859 uint64_t dummy1;
860 uint64_t offset;
861 uint32_t size;
862 uint32_t dummy2;
863 uint64_t dummy3;
864 uint64_t dummy4;
865};
866
867/* Device ioctls: */
868#define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t)
869
870struct fuse_lseek_in {
871 uint64_t fh;
872 uint64_t offset;
873 uint32_t whence;
874 uint32_t padding;
875};
876
877struct fuse_lseek_out {
878 uint64_t offset;
879};
880
881struct fuse_copy_file_range_in {
882 uint64_t fh_in;
883 uint64_t off_in;
884 uint64_t nodeid_out;
885 uint64_t fh_out;
886 uint64_t off_out;
887 uint64_t len;
888 uint64_t flags;
889};
890
891#endif /* _LINUX_FUSE_H */