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authorJonathan Herman <hermanjl@cs.unc.edu>2013-01-22 10:38:37 -0500
committerJonathan Herman <hermanjl@cs.unc.edu>2013-01-22 10:38:37 -0500
commitfcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch)
treea57612d1888735a2ec7972891b68c1ac5ec8faea /include/linux/fuse.h
parent8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff)
Added missing tegra files.HEADmaster
Diffstat (limited to 'include/linux/fuse.h')
-rw-r--r--include/linux/fuse.h634
1 files changed, 634 insertions, 0 deletions
diff --git a/include/linux/fuse.h b/include/linux/fuse.h
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+++ b/include/linux/fuse.h
@@ -0,0 +1,634 @@
1/*
2 FUSE: Filesystem in Userspace
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
9/*
10 * This file defines the kernel interface of FUSE
11 *
12 * Protocol changelog:
13 *
14 * 7.9:
15 * - new fuse_getattr_in input argument of GETATTR
16 * - add lk_flags in fuse_lk_in
17 * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
18 * - add blksize field to fuse_attr
19 * - add file flags field to fuse_read_in and fuse_write_in
20 *
21 * 7.10
22 * - add nonseekable open flag
23 *
24 * 7.11
25 * - add IOCTL message
26 * - add unsolicited notification support
27 * - add POLL message and NOTIFY_POLL notification
28 *
29 * 7.12
30 * - add umask flag to input argument of open, mknod and mkdir
31 * - add notification messages for invalidation of inodes and
32 * directory entries
33 *
34 * 7.13
35 * - make max number of background requests and congestion threshold
36 * tunables
37 *
38 * 7.14
39 * - add splice support to fuse device
40 *
41 * 7.15
42 * - add store notify
43 * - add retrieve notify
44 *
45 * 7.16
46 * - add BATCH_FORGET request
47 * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
48 * fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
49 * - add FUSE_IOCTL_32BIT flag
50 *
51 * 7.17
52 * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
53 */
54
55#ifndef _LINUX_FUSE_H
56#define _LINUX_FUSE_H
57
58#include <linux/types.h>
59
60/*
61 * Version negotiation:
62 *
63 * Both the kernel and userspace send the version they support in the
64 * INIT request and reply respectively.
65 *
66 * If the major versions match then both shall use the smallest
67 * of the two minor versions for communication.
68 *
69 * If the kernel supports a larger major version, then userspace shall
70 * reply with the major version it supports, ignore the rest of the
71 * INIT message and expect a new INIT message from the kernel with a
72 * matching major version.
73 *
74 * If the library supports a larger major version, then it shall fall
75 * back to the major protocol version sent by the kernel for
76 * communication and reply with that major version (and an arbitrary
77 * supported minor version).
78 */
79
80/** Version number of this interface */
81#define FUSE_KERNEL_VERSION 7
82
83/** Minor version number of this interface */
84#define FUSE_KERNEL_MINOR_VERSION 17
85
86/** The node ID of the root inode */
87#define FUSE_ROOT_ID 1
88
89/* Make sure all structures are padded to 64bit boundary, so 32bit
90 userspace works under 64bit kernels */
91
92struct fuse_attr {
93 __u64 ino;
94 __u64 size;
95 __u64 blocks;
96 __u64 atime;
97 __u64 mtime;
98 __u64 ctime;
99 __u32 atimensec;
100 __u32 mtimensec;
101 __u32 ctimensec;
102 __u32 mode;
103 __u32 nlink;
104 __u32 uid;
105 __u32 gid;
106 __u32 rdev;
107 __u32 blksize;
108 __u32 padding;
109};
110
111struct fuse_kstatfs {
112 __u64 blocks;
113 __u64 bfree;
114 __u64 bavail;
115 __u64 files;
116 __u64 ffree;
117 __u32 bsize;
118 __u32 namelen;
119 __u32 frsize;
120 __u32 padding;
121 __u32 spare[6];
122};
123
124struct fuse_file_lock {
125 __u64 start;
126 __u64 end;
127 __u32 type;
128 __u32 pid; /* tgid */
129};
130
131/**
132 * Bitmasks for fuse_setattr_in.valid
133 */
134#define FATTR_MODE (1 << 0)
135#define FATTR_UID (1 << 1)
136#define FATTR_GID (1 << 2)
137#define FATTR_SIZE (1 << 3)
138#define FATTR_ATIME (1 << 4)
139#define FATTR_MTIME (1 << 5)
140#define FATTR_FH (1 << 6)
141#define FATTR_ATIME_NOW (1 << 7)
142#define FATTR_MTIME_NOW (1 << 8)
143#define FATTR_LOCKOWNER (1 << 9)
144
145/**
146 * Flags returned by the OPEN request
147 *
148 * FOPEN_DIRECT_IO: bypass page cache for this open file
149 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
150 * FOPEN_NONSEEKABLE: the file is not seekable
151 */
152#define FOPEN_DIRECT_IO (1 << 0)
153#define FOPEN_KEEP_CACHE (1 << 1)
154#define FOPEN_NONSEEKABLE (1 << 2)
155
156/**
157 * INIT request/reply flags
158 *
159 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
160 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
161 * FUSE_DONT_MASK: don't apply umask to file mode on create operations
162 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
163 */
164#define FUSE_ASYNC_READ (1 << 0)
165#define FUSE_POSIX_LOCKS (1 << 1)
166#define FUSE_FILE_OPS (1 << 2)
167#define FUSE_ATOMIC_O_TRUNC (1 << 3)
168#define FUSE_EXPORT_SUPPORT (1 << 4)
169#define FUSE_BIG_WRITES (1 << 5)
170#define FUSE_DONT_MASK (1 << 6)
171#define FUSE_FLOCK_LOCKS (1 << 10)
172
173/**
174 * CUSE INIT request/reply flags
175 *
176 * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl
177 */
178#define CUSE_UNRESTRICTED_IOCTL (1 << 0)
179
180/**
181 * Release flags
182 */
183#define FUSE_RELEASE_FLUSH (1 << 0)
184#define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
185
186/**
187 * Getattr flags
188 */
189#define FUSE_GETATTR_FH (1 << 0)
190
191/**
192 * Lock flags
193 */
194#define FUSE_LK_FLOCK (1 << 0)
195
196/**
197 * WRITE flags
198 *
199 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
200 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
201 */
202#define FUSE_WRITE_CACHE (1 << 0)
203#define FUSE_WRITE_LOCKOWNER (1 << 1)
204
205/**
206 * Read flags
207 */
208#define FUSE_READ_LOCKOWNER (1 << 1)
209
210/**
211 * Ioctl flags
212 *
213 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
214 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
215 * FUSE_IOCTL_RETRY: retry with new iovecs
216 * FUSE_IOCTL_32BIT: 32bit ioctl
217 *
218 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
219 */
220#define FUSE_IOCTL_COMPAT (1 << 0)
221#define FUSE_IOCTL_UNRESTRICTED (1 << 1)
222#define FUSE_IOCTL_RETRY (1 << 2)
223#define FUSE_IOCTL_32BIT (1 << 3)
224
225#define FUSE_IOCTL_MAX_IOV 256
226
227/**
228 * Poll flags
229 *
230 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
231 */
232#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
233
234enum fuse_opcode {
235 FUSE_LOOKUP = 1,
236 FUSE_FORGET = 2, /* no reply */
237 FUSE_GETATTR = 3,
238 FUSE_SETATTR = 4,
239 FUSE_READLINK = 5,
240 FUSE_SYMLINK = 6,
241 FUSE_MKNOD = 8,
242 FUSE_MKDIR = 9,
243 FUSE_UNLINK = 10,
244 FUSE_RMDIR = 11,
245 FUSE_RENAME = 12,
246 FUSE_LINK = 13,
247 FUSE_OPEN = 14,
248 FUSE_READ = 15,
249 FUSE_WRITE = 16,
250 FUSE_STATFS = 17,
251 FUSE_RELEASE = 18,
252 FUSE_FSYNC = 20,
253 FUSE_SETXATTR = 21,
254 FUSE_GETXATTR = 22,
255 FUSE_LISTXATTR = 23,
256 FUSE_REMOVEXATTR = 24,
257 FUSE_FLUSH = 25,
258 FUSE_INIT = 26,
259 FUSE_OPENDIR = 27,
260 FUSE_READDIR = 28,
261 FUSE_RELEASEDIR = 29,
262 FUSE_FSYNCDIR = 30,
263 FUSE_GETLK = 31,
264 FUSE_SETLK = 32,
265 FUSE_SETLKW = 33,
266 FUSE_ACCESS = 34,
267 FUSE_CREATE = 35,
268 FUSE_INTERRUPT = 36,
269 FUSE_BMAP = 37,
270 FUSE_DESTROY = 38,
271 FUSE_IOCTL = 39,
272 FUSE_POLL = 40,
273 FUSE_NOTIFY_REPLY = 41,
274 FUSE_BATCH_FORGET = 42,
275
276 /* CUSE specific operations */
277 CUSE_INIT = 4096,
278};
279
280enum fuse_notify_code {
281 FUSE_NOTIFY_POLL = 1,
282 FUSE_NOTIFY_INVAL_INODE = 2,
283 FUSE_NOTIFY_INVAL_ENTRY = 3,
284 FUSE_NOTIFY_STORE = 4,
285 FUSE_NOTIFY_RETRIEVE = 5,
286 FUSE_NOTIFY_CODE_MAX,
287};
288
289/* The read buffer is required to be at least 8k, but may be much larger */
290#define FUSE_MIN_READ_BUFFER 8192
291
292#define FUSE_COMPAT_ENTRY_OUT_SIZE 120
293
294struct fuse_entry_out {
295 __u64 nodeid; /* Inode ID */
296 __u64 generation; /* Inode generation: nodeid:gen must
297 be unique for the fs's lifetime */
298 __u64 entry_valid; /* Cache timeout for the name */
299 __u64 attr_valid; /* Cache timeout for the attributes */
300 __u32 entry_valid_nsec;
301 __u32 attr_valid_nsec;
302 struct fuse_attr attr;
303};
304
305struct fuse_forget_in {
306 __u64 nlookup;
307};
308
309struct fuse_forget_one {
310 __u64 nodeid;
311 __u64 nlookup;
312};
313
314struct fuse_batch_forget_in {
315 __u32 count;
316 __u32 dummy;
317};
318
319struct fuse_getattr_in {
320 __u32 getattr_flags;
321 __u32 dummy;
322 __u64 fh;
323};
324
325#define FUSE_COMPAT_ATTR_OUT_SIZE 96
326
327struct fuse_attr_out {
328 __u64 attr_valid; /* Cache timeout for the attributes */
329 __u32 attr_valid_nsec;
330 __u32 dummy;
331 struct fuse_attr attr;
332};
333
334#define FUSE_COMPAT_MKNOD_IN_SIZE 8
335
336struct fuse_mknod_in {
337 __u32 mode;
338 __u32 rdev;
339 __u32 umask;
340 __u32 padding;
341};
342
343struct fuse_mkdir_in {
344 __u32 mode;
345 __u32 umask;
346};
347
348struct fuse_rename_in {
349 __u64 newdir;
350};
351
352struct fuse_link_in {
353 __u64 oldnodeid;
354};
355
356struct fuse_setattr_in {
357 __u32 valid;
358 __u32 padding;
359 __u64 fh;
360 __u64 size;
361 __u64 lock_owner;
362 __u64 atime;
363 __u64 mtime;
364 __u64 unused2;
365 __u32 atimensec;
366 __u32 mtimensec;
367 __u32 unused3;
368 __u32 mode;
369 __u32 unused4;
370 __u32 uid;
371 __u32 gid;
372 __u32 unused5;
373};
374
375struct fuse_open_in {
376 __u32 flags;
377 __u32 unused;
378};
379
380struct fuse_create_in {
381 __u32 flags;
382 __u32 mode;
383 __u32 umask;
384 __u32 padding;
385};
386
387struct fuse_open_out {
388 __u64 fh;
389 __u32 open_flags;
390 __u32 padding;
391};
392
393struct fuse_release_in {
394 __u64 fh;
395 __u32 flags;
396 __u32 release_flags;
397 __u64 lock_owner;
398};
399
400struct fuse_flush_in {
401 __u64 fh;
402 __u32 unused;
403 __u32 padding;
404 __u64 lock_owner;
405};
406
407struct fuse_read_in {
408 __u64 fh;
409 __u64 offset;
410 __u32 size;
411 __u32 read_flags;
412 __u64 lock_owner;
413 __u32 flags;
414 __u32 padding;
415};
416
417#define FUSE_COMPAT_WRITE_IN_SIZE 24
418
419struct fuse_write_in {
420 __u64 fh;
421 __u64 offset;
422 __u32 size;
423 __u32 write_flags;
424 __u64 lock_owner;
425 __u32 flags;
426 __u32 padding;
427};
428
429struct fuse_write_out {
430 __u32 size;
431 __u32 padding;
432};
433
434#define FUSE_COMPAT_STATFS_SIZE 48
435
436struct fuse_statfs_out {
437 struct fuse_kstatfs st;
438};
439
440struct fuse_fsync_in {
441 __u64 fh;
442 __u32 fsync_flags;
443 __u32 padding;
444};
445
446struct fuse_setxattr_in {
447 __u32 size;
448 __u32 flags;
449};
450
451struct fuse_getxattr_in {
452 __u32 size;
453 __u32 padding;
454};
455
456struct fuse_getxattr_out {
457 __u32 size;
458 __u32 padding;
459};
460
461struct fuse_lk_in {
462 __u64 fh;
463 __u64 owner;
464 struct fuse_file_lock lk;
465 __u32 lk_flags;
466 __u32 padding;
467};
468
469struct fuse_lk_out {
470 struct fuse_file_lock lk;
471};
472
473struct fuse_access_in {
474 __u32 mask;
475 __u32 padding;
476};
477
478struct fuse_init_in {
479 __u32 major;
480 __u32 minor;
481 __u32 max_readahead;
482 __u32 flags;
483};
484
485struct fuse_init_out {
486 __u32 major;
487 __u32 minor;
488 __u32 max_readahead;
489 __u32 flags;
490 __u16 max_background;
491 __u16 congestion_threshold;
492 __u32 max_write;
493};
494
495#define CUSE_INIT_INFO_MAX 4096
496
497struct cuse_init_in {
498 __u32 major;
499 __u32 minor;
500 __u32 unused;
501 __u32 flags;
502};
503
504struct cuse_init_out {
505 __u32 major;
506 __u32 minor;
507 __u32 unused;
508 __u32 flags;
509 __u32 max_read;
510 __u32 max_write;
511 __u32 dev_major; /* chardev major */
512 __u32 dev_minor; /* chardev minor */
513 __u32 spare[10];
514};
515
516struct fuse_interrupt_in {
517 __u64 unique;
518};
519
520struct fuse_bmap_in {
521 __u64 block;
522 __u32 blocksize;
523 __u32 padding;
524};
525
526struct fuse_bmap_out {
527 __u64 block;
528};
529
530struct fuse_ioctl_in {
531 __u64 fh;
532 __u32 flags;
533 __u32 cmd;
534 __u64 arg;
535 __u32 in_size;
536 __u32 out_size;
537};
538
539struct fuse_ioctl_iovec {
540 __u64 base;
541 __u64 len;
542};
543
544struct fuse_ioctl_out {
545 __s32 result;
546 __u32 flags;
547 __u32 in_iovs;
548 __u32 out_iovs;
549};
550
551struct fuse_poll_in {
552 __u64 fh;
553 __u64 kh;
554 __u32 flags;
555 __u32 padding;
556};
557
558struct fuse_poll_out {
559 __u32 revents;
560 __u32 padding;
561};
562
563struct fuse_notify_poll_wakeup_out {
564 __u64 kh;
565};
566
567struct fuse_in_header {
568 __u32 len;
569 __u32 opcode;
570 __u64 unique;
571 __u64 nodeid;
572 __u32 uid;
573 __u32 gid;
574 __u32 pid;
575 __u32 padding;
576};
577
578struct fuse_out_header {
579 __u32 len;
580 __s32 error;
581 __u64 unique;
582};
583
584struct fuse_dirent {
585 __u64 ino;
586 __u64 off;
587 __u32 namelen;
588 __u32 type;
589 char name[0];
590};
591
592#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
593#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
594#define FUSE_DIRENT_SIZE(d) \
595 FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
596
597struct fuse_notify_inval_inode_out {
598 __u64 ino;
599 __s64 off;
600 __s64 len;
601};
602
603struct fuse_notify_inval_entry_out {
604 __u64 parent;
605 __u32 namelen;
606 __u32 padding;
607};
608
609struct fuse_notify_store_out {
610 __u64 nodeid;
611 __u64 offset;
612 __u32 size;
613 __u32 padding;
614};
615
616struct fuse_notify_retrieve_out {
617 __u64 notify_unique;
618 __u64 nodeid;
619 __u64 offset;
620 __u32 size;
621 __u32 padding;
622};
623
624/* Matches the size of fuse_write_in */
625struct fuse_notify_retrieve_in {
626 __u64 dummy1;
627 __u64 offset;
628 __u32 size;
629 __u32 dummy2;
630 __u64 dummy3;
631 __u64 dummy4;
632};
633
634#endif /* _LINUX_FUSE_H */