Commit | Line | Data |
---|---|---|
d8a5ba45 MS |
1 | /* |
2 | FUSE: Filesystem in Userspace | |
1f55ed06 | 3 | Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu> |
d8a5ba45 MS |
4 | |
5 | This program can be distributed under the terms of the GNU GPL. | |
6 | See the file COPYING. | |
7 | */ | |
8 | ||
c79e322f MS |
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 | |
a9ff4f87 | 16 | * - add lk_flags in fuse_lk_in |
f3332114 | 17 | * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in |
0e9663ee | 18 | * - add blksize field to fuse_attr |
a6643094 | 19 | * - add file flags field to fuse_read_in and fuse_write_in |
a7c1b990 TH |
20 | * |
21 | * 7.10 | |
22 | * - add nonseekable open flag | |
1f55ed06 MS |
23 | * |
24 | * 7.11 | |
25 | * - add IOCTL message | |
26 | * - add unsolicited notification support | |
27 | * - add POLL message and NOTIFY_POLL notification | |
c79e322f | 28 | */ |
d8a5ba45 | 29 | |
29d434b3 TH |
30 | #ifndef _LINUX_FUSE_H |
31 | #define _LINUX_FUSE_H | |
32 | ||
1f55ed06 | 33 | #include <linux/types.h> |
d8a5ba45 MS |
34 | |
35 | /** Version number of this interface */ | |
9e6268db | 36 | #define FUSE_KERNEL_VERSION 7 |
d8a5ba45 MS |
37 | |
38 | /** Minor version number of this interface */ | |
1f55ed06 | 39 | #define FUSE_KERNEL_MINOR_VERSION 11 |
d8a5ba45 MS |
40 | |
41 | /** The node ID of the root inode */ | |
42 | #define FUSE_ROOT_ID 1 | |
43 | ||
06663267 MS |
44 | /* Make sure all structures are padded to 64bit boundary, so 32bit |
45 | userspace works under 64bit kernels */ | |
46 | ||
d8a5ba45 MS |
47 | struct fuse_attr { |
48 | __u64 ino; | |
49 | __u64 size; | |
50 | __u64 blocks; | |
51 | __u64 atime; | |
52 | __u64 mtime; | |
53 | __u64 ctime; | |
54 | __u32 atimensec; | |
55 | __u32 mtimensec; | |
56 | __u32 ctimensec; | |
57 | __u32 mode; | |
58 | __u32 nlink; | |
59 | __u32 uid; | |
60 | __u32 gid; | |
61 | __u32 rdev; | |
0e9663ee MS |
62 | __u32 blksize; |
63 | __u32 padding; | |
d8a5ba45 MS |
64 | }; |
65 | ||
e5e5558e MS |
66 | struct fuse_kstatfs { |
67 | __u64 blocks; | |
68 | __u64 bfree; | |
69 | __u64 bavail; | |
70 | __u64 files; | |
71 | __u64 ffree; | |
72 | __u32 bsize; | |
73 | __u32 namelen; | |
de5f1202 MS |
74 | __u32 frsize; |
75 | __u32 padding; | |
76 | __u32 spare[6]; | |
e5e5558e MS |
77 | }; |
78 | ||
71421259 MS |
79 | struct fuse_file_lock { |
80 | __u64 start; | |
81 | __u64 end; | |
82 | __u32 type; | |
83 | __u32 pid; /* tgid */ | |
84 | }; | |
85 | ||
9cd68455 MS |
86 | /** |
87 | * Bitmasks for fuse_setattr_in.valid | |
88 | */ | |
9e6268db MS |
89 | #define FATTR_MODE (1 << 0) |
90 | #define FATTR_UID (1 << 1) | |
91 | #define FATTR_GID (1 << 2) | |
92 | #define FATTR_SIZE (1 << 3) | |
93 | #define FATTR_ATIME (1 << 4) | |
94 | #define FATTR_MTIME (1 << 5) | |
befc649c | 95 | #define FATTR_FH (1 << 6) |
17637cba MS |
96 | #define FATTR_ATIME_NOW (1 << 7) |
97 | #define FATTR_MTIME_NOW (1 << 8) | |
f3332114 | 98 | #define FATTR_LOCKOWNER (1 << 9) |
9e6268db | 99 | |
45323fb7 MS |
100 | /** |
101 | * Flags returned by the OPEN request | |
102 | * | |
103 | * FOPEN_DIRECT_IO: bypass page cache for this open file | |
104 | * FOPEN_KEEP_CACHE: don't invalidate the data cache on open | |
a7c1b990 | 105 | * FOPEN_NONSEEKABLE: the file is not seekable |
45323fb7 MS |
106 | */ |
107 | #define FOPEN_DIRECT_IO (1 << 0) | |
108 | #define FOPEN_KEEP_CACHE (1 << 1) | |
a7c1b990 | 109 | #define FOPEN_NONSEEKABLE (1 << 2) |
45323fb7 | 110 | |
9cd68455 MS |
111 | /** |
112 | * INIT request/reply flags | |
33670fa2 MS |
113 | * |
114 | * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." | |
9cd68455 MS |
115 | */ |
116 | #define FUSE_ASYNC_READ (1 << 0) | |
71421259 | 117 | #define FUSE_POSIX_LOCKS (1 << 1) |
c79e322f | 118 | #define FUSE_FILE_OPS (1 << 2) |
6ff958ed | 119 | #define FUSE_ATOMIC_O_TRUNC (1 << 3) |
33670fa2 | 120 | #define FUSE_EXPORT_SUPPORT (1 << 4) |
78bb6cb9 | 121 | #define FUSE_BIG_WRITES (1 << 5) |
9cd68455 | 122 | |
e9168c18 MS |
123 | /** |
124 | * Release flags | |
125 | */ | |
126 | #define FUSE_RELEASE_FLUSH (1 << 0) | |
127 | ||
c79e322f MS |
128 | /** |
129 | * Getattr flags | |
130 | */ | |
131 | #define FUSE_GETATTR_FH (1 << 0) | |
132 | ||
a9ff4f87 MS |
133 | /** |
134 | * Lock flags | |
135 | */ | |
136 | #define FUSE_LK_FLOCK (1 << 0) | |
137 | ||
b25e82e5 MS |
138 | /** |
139 | * WRITE flags | |
140 | * | |
141 | * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed | |
f3332114 | 142 | * FUSE_WRITE_LOCKOWNER: lock_owner field is valid |
b25e82e5 MS |
143 | */ |
144 | #define FUSE_WRITE_CACHE (1 << 0) | |
f3332114 MS |
145 | #define FUSE_WRITE_LOCKOWNER (1 << 1) |
146 | ||
147 | /** | |
148 | * Read flags | |
149 | */ | |
150 | #define FUSE_READ_LOCKOWNER (1 << 1) | |
b25e82e5 | 151 | |
59efec7b TH |
152 | /** |
153 | * Ioctl flags | |
154 | * | |
155 | * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine | |
156 | * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed | |
157 | * FUSE_IOCTL_RETRY: retry with new iovecs | |
158 | * | |
159 | * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs | |
160 | */ | |
161 | #define FUSE_IOCTL_COMPAT (1 << 0) | |
162 | #define FUSE_IOCTL_UNRESTRICTED (1 << 1) | |
163 | #define FUSE_IOCTL_RETRY (1 << 2) | |
164 | ||
165 | #define FUSE_IOCTL_MAX_IOV 256 | |
166 | ||
95668a69 TH |
167 | /** |
168 | * Poll flags | |
169 | * | |
170 | * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify | |
171 | */ | |
172 | #define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) | |
173 | ||
334f485d | 174 | enum fuse_opcode { |
e5e5558e MS |
175 | FUSE_LOOKUP = 1, |
176 | FUSE_FORGET = 2, /* no reply */ | |
177 | FUSE_GETATTR = 3, | |
9e6268db | 178 | FUSE_SETATTR = 4, |
e5e5558e | 179 | FUSE_READLINK = 5, |
9e6268db | 180 | FUSE_SYMLINK = 6, |
9e6268db MS |
181 | FUSE_MKNOD = 8, |
182 | FUSE_MKDIR = 9, | |
183 | FUSE_UNLINK = 10, | |
184 | FUSE_RMDIR = 11, | |
185 | FUSE_RENAME = 12, | |
186 | FUSE_LINK = 13, | |
b6aeaded MS |
187 | FUSE_OPEN = 14, |
188 | FUSE_READ = 15, | |
189 | FUSE_WRITE = 16, | |
e5e5558e | 190 | FUSE_STATFS = 17, |
b6aeaded MS |
191 | FUSE_RELEASE = 18, |
192 | FUSE_FSYNC = 20, | |
92a8780e MS |
193 | FUSE_SETXATTR = 21, |
194 | FUSE_GETXATTR = 22, | |
195 | FUSE_LISTXATTR = 23, | |
196 | FUSE_REMOVEXATTR = 24, | |
b6aeaded | 197 | FUSE_FLUSH = 25, |
04730fef MS |
198 | FUSE_INIT = 26, |
199 | FUSE_OPENDIR = 27, | |
200 | FUSE_READDIR = 28, | |
82547981 | 201 | FUSE_RELEASEDIR = 29, |
31d40d74 | 202 | FUSE_FSYNCDIR = 30, |
71421259 MS |
203 | FUSE_GETLK = 31, |
204 | FUSE_SETLK = 32, | |
205 | FUSE_SETLKW = 33, | |
fd72faac | 206 | FUSE_ACCESS = 34, |
a4d27e75 MS |
207 | FUSE_CREATE = 35, |
208 | FUSE_INTERRUPT = 36, | |
b2d2272f | 209 | FUSE_BMAP = 37, |
0ec7ca41 | 210 | FUSE_DESTROY = 38, |
59efec7b | 211 | FUSE_IOCTL = 39, |
95668a69 | 212 | FUSE_POLL = 40, |
334f485d MS |
213 | }; |
214 | ||
8599396b | 215 | enum fuse_notify_code { |
95668a69 | 216 | FUSE_NOTIFY_POLL = 1, |
8599396b TH |
217 | FUSE_NOTIFY_CODE_MAX, |
218 | }; | |
219 | ||
1d3d752b MS |
220 | /* The read buffer is required to be at least 8k, but may be much larger */ |
221 | #define FUSE_MIN_READ_BUFFER 8192 | |
e5e5558e | 222 | |
0e9663ee MS |
223 | #define FUSE_COMPAT_ENTRY_OUT_SIZE 120 |
224 | ||
e5e5558e MS |
225 | struct fuse_entry_out { |
226 | __u64 nodeid; /* Inode ID */ | |
227 | __u64 generation; /* Inode generation: nodeid:gen must | |
228 | be unique for the fs's lifetime */ | |
229 | __u64 entry_valid; /* Cache timeout for the name */ | |
230 | __u64 attr_valid; /* Cache timeout for the attributes */ | |
231 | __u32 entry_valid_nsec; | |
232 | __u32 attr_valid_nsec; | |
233 | struct fuse_attr attr; | |
234 | }; | |
235 | ||
236 | struct fuse_forget_in { | |
9e6268db | 237 | __u64 nlookup; |
e5e5558e MS |
238 | }; |
239 | ||
c79e322f MS |
240 | struct fuse_getattr_in { |
241 | __u32 getattr_flags; | |
242 | __u32 dummy; | |
243 | __u64 fh; | |
244 | }; | |
245 | ||
0e9663ee MS |
246 | #define FUSE_COMPAT_ATTR_OUT_SIZE 96 |
247 | ||
e5e5558e MS |
248 | struct fuse_attr_out { |
249 | __u64 attr_valid; /* Cache timeout for the attributes */ | |
250 | __u32 attr_valid_nsec; | |
251 | __u32 dummy; | |
252 | struct fuse_attr attr; | |
253 | }; | |
254 | ||
9e6268db MS |
255 | struct fuse_mknod_in { |
256 | __u32 mode; | |
257 | __u32 rdev; | |
258 | }; | |
259 | ||
260 | struct fuse_mkdir_in { | |
261 | __u32 mode; | |
06663267 | 262 | __u32 padding; |
9e6268db MS |
263 | }; |
264 | ||
265 | struct fuse_rename_in { | |
266 | __u64 newdir; | |
267 | }; | |
268 | ||
269 | struct fuse_link_in { | |
270 | __u64 oldnodeid; | |
271 | }; | |
272 | ||
273 | struct fuse_setattr_in { | |
274 | __u32 valid; | |
06663267 | 275 | __u32 padding; |
befc649c MS |
276 | __u64 fh; |
277 | __u64 size; | |
f3332114 | 278 | __u64 lock_owner; |
befc649c MS |
279 | __u64 atime; |
280 | __u64 mtime; | |
281 | __u64 unused2; | |
282 | __u32 atimensec; | |
283 | __u32 mtimensec; | |
284 | __u32 unused3; | |
285 | __u32 mode; | |
286 | __u32 unused4; | |
287 | __u32 uid; | |
288 | __u32 gid; | |
289 | __u32 unused5; | |
9e6268db MS |
290 | }; |
291 | ||
b6aeaded MS |
292 | struct fuse_open_in { |
293 | __u32 flags; | |
fd72faac | 294 | __u32 mode; |
b6aeaded MS |
295 | }; |
296 | ||
297 | struct fuse_open_out { | |
298 | __u64 fh; | |
299 | __u32 open_flags; | |
06663267 | 300 | __u32 padding; |
b6aeaded MS |
301 | }; |
302 | ||
303 | struct fuse_release_in { | |
304 | __u64 fh; | |
305 | __u32 flags; | |
e9168c18 MS |
306 | __u32 release_flags; |
307 | __u64 lock_owner; | |
b6aeaded MS |
308 | }; |
309 | ||
310 | struct fuse_flush_in { | |
311 | __u64 fh; | |
e9168c18 | 312 | __u32 unused; |
06663267 | 313 | __u32 padding; |
71421259 | 314 | __u64 lock_owner; |
b6aeaded MS |
315 | }; |
316 | ||
317 | struct fuse_read_in { | |
318 | __u64 fh; | |
319 | __u64 offset; | |
320 | __u32 size; | |
f3332114 MS |
321 | __u32 read_flags; |
322 | __u64 lock_owner; | |
a6643094 MS |
323 | __u32 flags; |
324 | __u32 padding; | |
b6aeaded MS |
325 | }; |
326 | ||
f3332114 MS |
327 | #define FUSE_COMPAT_WRITE_IN_SIZE 24 |
328 | ||
b6aeaded MS |
329 | struct fuse_write_in { |
330 | __u64 fh; | |
331 | __u64 offset; | |
332 | __u32 size; | |
333 | __u32 write_flags; | |
f3332114 | 334 | __u64 lock_owner; |
a6643094 MS |
335 | __u32 flags; |
336 | __u32 padding; | |
b6aeaded MS |
337 | }; |
338 | ||
339 | struct fuse_write_out { | |
340 | __u32 size; | |
06663267 | 341 | __u32 padding; |
b6aeaded MS |
342 | }; |
343 | ||
de5f1202 MS |
344 | #define FUSE_COMPAT_STATFS_SIZE 48 |
345 | ||
e5e5558e MS |
346 | struct fuse_statfs_out { |
347 | struct fuse_kstatfs st; | |
348 | }; | |
349 | ||
b6aeaded MS |
350 | struct fuse_fsync_in { |
351 | __u64 fh; | |
352 | __u32 fsync_flags; | |
06663267 | 353 | __u32 padding; |
b6aeaded MS |
354 | }; |
355 | ||
92a8780e MS |
356 | struct fuse_setxattr_in { |
357 | __u32 size; | |
358 | __u32 flags; | |
359 | }; | |
360 | ||
361 | struct fuse_getxattr_in { | |
362 | __u32 size; | |
06663267 | 363 | __u32 padding; |
92a8780e MS |
364 | }; |
365 | ||
366 | struct fuse_getxattr_out { | |
367 | __u32 size; | |
06663267 | 368 | __u32 padding; |
92a8780e MS |
369 | }; |
370 | ||
71421259 MS |
371 | struct fuse_lk_in { |
372 | __u64 fh; | |
373 | __u64 owner; | |
374 | struct fuse_file_lock lk; | |
a9ff4f87 MS |
375 | __u32 lk_flags; |
376 | __u32 padding; | |
71421259 MS |
377 | }; |
378 | ||
379 | struct fuse_lk_out { | |
380 | struct fuse_file_lock lk; | |
381 | }; | |
382 | ||
31d40d74 MS |
383 | struct fuse_access_in { |
384 | __u32 mask; | |
385 | __u32 padding; | |
386 | }; | |
387 | ||
3ec870d5 | 388 | struct fuse_init_in { |
334f485d MS |
389 | __u32 major; |
390 | __u32 minor; | |
9cd68455 MS |
391 | __u32 max_readahead; |
392 | __u32 flags; | |
334f485d MS |
393 | }; |
394 | ||
3ec870d5 MS |
395 | struct fuse_init_out { |
396 | __u32 major; | |
397 | __u32 minor; | |
9cd68455 MS |
398 | __u32 max_readahead; |
399 | __u32 flags; | |
400 | __u32 unused; | |
3ec870d5 MS |
401 | __u32 max_write; |
402 | }; | |
403 | ||
a4d27e75 MS |
404 | struct fuse_interrupt_in { |
405 | __u64 unique; | |
406 | }; | |
407 | ||
b2d2272f MS |
408 | struct fuse_bmap_in { |
409 | __u64 block; | |
410 | __u32 blocksize; | |
411 | __u32 padding; | |
412 | }; | |
413 | ||
414 | struct fuse_bmap_out { | |
415 | __u64 block; | |
416 | }; | |
417 | ||
59efec7b TH |
418 | struct fuse_ioctl_in { |
419 | __u64 fh; | |
420 | __u32 flags; | |
421 | __u32 cmd; | |
422 | __u64 arg; | |
423 | __u32 in_size; | |
424 | __u32 out_size; | |
425 | }; | |
426 | ||
427 | struct fuse_ioctl_out { | |
428 | __s32 result; | |
429 | __u32 flags; | |
430 | __u32 in_iovs; | |
431 | __u32 out_iovs; | |
432 | }; | |
433 | ||
95668a69 TH |
434 | struct fuse_poll_in { |
435 | __u64 fh; | |
436 | __u64 kh; | |
437 | __u32 flags; | |
438 | __u32 padding; | |
439 | }; | |
440 | ||
441 | struct fuse_poll_out { | |
442 | __u32 revents; | |
443 | __u32 padding; | |
444 | }; | |
445 | ||
446 | struct fuse_notify_poll_wakeup_out { | |
447 | __u64 kh; | |
448 | }; | |
449 | ||
334f485d MS |
450 | struct fuse_in_header { |
451 | __u32 len; | |
452 | __u32 opcode; | |
453 | __u64 unique; | |
454 | __u64 nodeid; | |
455 | __u32 uid; | |
456 | __u32 gid; | |
457 | __u32 pid; | |
06663267 | 458 | __u32 padding; |
334f485d MS |
459 | }; |
460 | ||
461 | struct fuse_out_header { | |
462 | __u32 len; | |
463 | __s32 error; | |
464 | __u64 unique; | |
465 | }; | |
466 | ||
e5e5558e MS |
467 | struct fuse_dirent { |
468 | __u64 ino; | |
469 | __u64 off; | |
470 | __u32 namelen; | |
471 | __u32 type; | |
472 | char name[0]; | |
473 | }; | |
474 | ||
21f3da95 | 475 | #define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) |
e5e5558e MS |
476 | #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1)) |
477 | #define FUSE_DIRENT_SIZE(d) \ | |
478 | FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) | |
29d434b3 TH |
479 | |
480 | #endif /* _LINUX_FUSE_H */ |