Commit | Line | Data |
---|---|---|
d8a5ba45 MS |
1 | /* |
2 | FUSE: Filesystem in Userspace | |
1729a16c | 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 | ||
29d434b3 TH |
9 | #ifndef _FS_FUSE_I_H |
10 | #define _FS_FUSE_I_H | |
11 | ||
d8a5ba45 MS |
12 | #include <linux/fuse.h> |
13 | #include <linux/fs.h> | |
51eb01e7 | 14 | #include <linux/mount.h> |
d8a5ba45 MS |
15 | #include <linux/wait.h> |
16 | #include <linux/list.h> | |
17 | #include <linux/spinlock.h> | |
18 | #include <linux/mm.h> | |
19 | #include <linux/backing-dev.h> | |
bafa9654 | 20 | #include <linux/mutex.h> |
3be5a52b | 21 | #include <linux/rwsem.h> |
95668a69 TH |
22 | #include <linux/rbtree.h> |
23 | #include <linux/poll.h> | |
5a18ec17 | 24 | #include <linux/workqueue.h> |
744742d6 | 25 | #include <linux/kref.h> |
60bcc88a | 26 | #include <linux/xattr.h> |
0b6e9ea0 | 27 | #include <linux/pid_namespace.h> |
4e8c2eb5 | 28 | #include <linux/refcount.h> |
8cb08329 | 29 | #include <linux/user_namespace.h> |
d8a5ba45 | 30 | |
5da784cc CS |
31 | /** Default max number of pages that can be used in a single read request */ |
32 | #define FUSE_DEFAULT_MAX_PAGES_PER_REQ 32 | |
33 | ||
34 | /** Maximum of max_pages received in init_out */ | |
35 | #define FUSE_MAX_MAX_PAGES 256 | |
334f485d | 36 | |
3be5a52b MS |
37 | /** Bias for fi->writectr, meaning new writepages must not be sent */ |
38 | #define FUSE_NOWRITE INT_MIN | |
39 | ||
1d3d752b MS |
40 | /** It could be as large as PATH_MAX, but would that have any uses? */ |
41 | #define FUSE_NAME_MAX 1024 | |
42 | ||
bafa9654 | 43 | /** Number of dentries for each connection in the control filesystem */ |
79a9d994 | 44 | #define FUSE_CTL_NUM_DENTRIES 5 |
bafa9654 | 45 | |
4250c066 MP |
46 | /** Number of page pointers embedded in fuse_req */ |
47 | #define FUSE_REQ_INLINE_PAGES 1 | |
48 | ||
bafa9654 MS |
49 | /** List of active connections */ |
50 | extern struct list_head fuse_conn_list; | |
51 | ||
52 | /** Global mutex protecting fuse_conn_list and the control filesystem */ | |
53 | extern struct mutex fuse_mutex; | |
413ef8cb | 54 | |
79a9d994 CH |
55 | /** Module parameters */ |
56 | extern unsigned max_user_bgreq; | |
57 | extern unsigned max_user_congthresh; | |
58 | ||
07e77dca MS |
59 | /* One forget request */ |
60 | struct fuse_forget_link { | |
02c048b9 | 61 | struct fuse_forget_one forget_one; |
07e77dca MS |
62 | struct fuse_forget_link *next; |
63 | }; | |
64 | ||
d8a5ba45 MS |
65 | /** FUSE inode */ |
66 | struct fuse_inode { | |
67 | /** Inode data */ | |
68 | struct inode inode; | |
69 | ||
70 | /** Unique ID, which identifies the inode between userspace | |
71 | * and kernel */ | |
72 | u64 nodeid; | |
73 | ||
9e6268db MS |
74 | /** Number of lookups on this inode */ |
75 | u64 nlookup; | |
76 | ||
e5e5558e | 77 | /** The request used for sending the FORGET message */ |
07e77dca | 78 | struct fuse_forget_link *forget; |
e5e5558e | 79 | |
d8a5ba45 | 80 | /** Time in jiffies until the file attributes are valid */ |
0a0898cf | 81 | u64 i_time; |
ebc14c4d | 82 | |
2f1e8196 MS |
83 | /* Which attributes are invalid */ |
84 | u32 inval_mask; | |
85 | ||
ebc14c4d MS |
86 | /** The sticky bit in inode->i_mode may have been removed, so |
87 | preserve the original mode */ | |
541af6a0 | 88 | umode_t orig_i_mode; |
1fb69e78 | 89 | |
45c72cd7 PS |
90 | /** 64 bit inode number */ |
91 | u64 orig_ino; | |
92 | ||
1fb69e78 MS |
93 | /** Version of last attribute change */ |
94 | u64 attr_version; | |
93a8c3cd | 95 | |
ab2257e9 MS |
96 | union { |
97 | /* Write related fields (regular file only) */ | |
98 | struct { | |
f15ecfef | 99 | /* Files usable in writepage. Protected by fi->lock */ |
ab2257e9 | 100 | struct list_head write_files; |
3be5a52b | 101 | |
ab2257e9 MS |
102 | /* Writepages pending on truncate or fsync */ |
103 | struct list_head queued_writes; | |
3be5a52b | 104 | |
ab2257e9 MS |
105 | /* Number of sent writes, a negative bias |
106 | * (FUSE_NOWRITE) means more writes are blocked */ | |
107 | int writectr; | |
3be5a52b | 108 | |
ab2257e9 MS |
109 | /* Waitq for writepage completion */ |
110 | wait_queue_head_t page_waitq; | |
3be5a52b | 111 | |
ab2257e9 MS |
112 | /* List of writepage requestst (pending or sent) */ |
113 | struct list_head writepages; | |
114 | }; | |
4582a4ab | 115 | |
ab2257e9 MS |
116 | /* readdir cache (directory only) */ |
117 | struct { | |
118 | /* true if fully cached */ | |
119 | bool cached; | |
69e34551 | 120 | |
ab2257e9 MS |
121 | /* size of cache */ |
122 | loff_t size; | |
69e34551 | 123 | |
ab2257e9 MS |
124 | /* position at end of cache (position of next entry) */ |
125 | loff_t pos; | |
69e34551 | 126 | |
ab2257e9 MS |
127 | /* version of the cache */ |
128 | u64 version; | |
3494927e | 129 | |
ab2257e9 MS |
130 | /* modification time of directory when cache was |
131 | * started */ | |
132 | struct timespec64 mtime; | |
7118883b | 133 | |
ab2257e9 MS |
134 | /* iversion of directory when cache was started */ |
135 | u64 iversion; | |
261aaba7 | 136 | |
ab2257e9 MS |
137 | /* protects above fields */ |
138 | spinlock_t lock; | |
139 | } rdc; | |
140 | }; | |
69e34551 | 141 | |
4582a4ab FS |
142 | /** Miscellaneous bits describing inode state */ |
143 | unsigned long state; | |
5c672ab3 MS |
144 | |
145 | /** Lock for serializing lookup and readdir for back compatibility*/ | |
146 | struct mutex mutex; | |
f15ecfef KT |
147 | |
148 | /** Lock to protect write related fields */ | |
149 | spinlock_t lock; | |
4582a4ab FS |
150 | }; |
151 | ||
152 | /** FUSE inode state bits */ | |
153 | enum { | |
154 | /** Advise readdirplus */ | |
155 | FUSE_I_ADVISE_RDPLUS, | |
6314efee MS |
156 | /** Initialized with readdirplus */ |
157 | FUSE_I_INIT_RDPLUS, | |
06a7c3c2 MP |
158 | /** An operation changing file size is in progress */ |
159 | FUSE_I_SIZE_UNSTABLE, | |
d8a5ba45 MS |
160 | }; |
161 | ||
da5e4714 MS |
162 | struct fuse_conn; |
163 | ||
b6aeaded MS |
164 | /** FUSE specific file data */ |
165 | struct fuse_file { | |
da5e4714 MS |
166 | /** Fuse connection for this file */ |
167 | struct fuse_conn *fc; | |
168 | ||
6b675738 KT |
169 | /* |
170 | * Request reserved for flush and release. | |
171 | * Modified under relative fuse_inode::lock. | |
172 | */ | |
33649c91 | 173 | struct fuse_req *reserved_req; |
b6aeaded | 174 | |
acf99433 TH |
175 | /** Kernel file handle guaranteed to be unique */ |
176 | u64 kh; | |
177 | ||
b6aeaded MS |
178 | /** File handle used by userspace */ |
179 | u64 fh; | |
c756e0a4 | 180 | |
da5e4714 MS |
181 | /** Node id of this file */ |
182 | u64 nodeid; | |
183 | ||
c756e0a4 | 184 | /** Refcount */ |
4e8c2eb5 | 185 | refcount_t count; |
93a8c3cd | 186 | |
c7b7143c MS |
187 | /** FOPEN_* flags returned by open */ |
188 | u32 open_flags; | |
189 | ||
93a8c3cd MS |
190 | /** Entry on inode's write_files list */ |
191 | struct list_head write_entry; | |
95668a69 | 192 | |
5d7bc7e8 MS |
193 | /* Readdir related */ |
194 | struct { | |
195 | /* | |
196 | * Protects below fields against (crazy) parallel readdir on | |
197 | * same open file. Uncontended in the normal case. | |
198 | */ | |
199 | struct mutex lock; | |
200 | ||
201 | /* Dir stream position */ | |
202 | loff_t pos; | |
203 | ||
204 | /* Offset in cache */ | |
205 | loff_t cache_off; | |
3494927e MS |
206 | |
207 | /* Version of cache we are reading */ | |
208 | u64 version; | |
209 | ||
5d7bc7e8 MS |
210 | } readdir; |
211 | ||
95668a69 TH |
212 | /** RB node to be linked on fuse_conn->polled_files */ |
213 | struct rb_node polled_node; | |
214 | ||
215 | /** Wait queue head for poll */ | |
216 | wait_queue_head_t poll_wait; | |
37fb3a30 MS |
217 | |
218 | /** Has flock been performed on this file? */ | |
219 | bool flock:1; | |
b6aeaded MS |
220 | }; |
221 | ||
334f485d MS |
222 | /** One input argument of a request */ |
223 | struct fuse_in_arg { | |
224 | unsigned size; | |
225 | const void *value; | |
226 | }; | |
227 | ||
228 | /** The request input */ | |
229 | struct fuse_in { | |
230 | /** The request header */ | |
231 | struct fuse_in_header h; | |
232 | ||
233 | /** True if the data for the last argument is in req->pages */ | |
234 | unsigned argpages:1; | |
235 | ||
236 | /** Number of arguments */ | |
237 | unsigned numargs; | |
238 | ||
239 | /** Array of arguments */ | |
240 | struct fuse_in_arg args[3]; | |
241 | }; | |
242 | ||
243 | /** One output argument of a request */ | |
244 | struct fuse_arg { | |
245 | unsigned size; | |
246 | void *value; | |
247 | }; | |
248 | ||
249 | /** The request output */ | |
250 | struct fuse_out { | |
251 | /** Header returned from userspace */ | |
252 | struct fuse_out_header h; | |
253 | ||
095da6cb MS |
254 | /* |
255 | * The following bitfields are not changed during the request | |
256 | * processing | |
257 | */ | |
258 | ||
334f485d MS |
259 | /** Last argument is variable length (can be shorter than |
260 | arg->size) */ | |
261 | unsigned argvar:1; | |
262 | ||
263 | /** Last argument is a list of pages to copy data to */ | |
264 | unsigned argpages:1; | |
265 | ||
266 | /** Zero partially or not copied pages */ | |
267 | unsigned page_zeroing:1; | |
268 | ||
ce534fb0 MS |
269 | /** Pages may be replaced with new ones */ |
270 | unsigned page_replace:1; | |
271 | ||
334f485d MS |
272 | /** Number or arguments */ |
273 | unsigned numargs; | |
274 | ||
275 | /** Array of arguments */ | |
f704dcb5 | 276 | struct fuse_arg args[2]; |
334f485d MS |
277 | }; |
278 | ||
b2430d75 MP |
279 | /** FUSE page descriptor */ |
280 | struct fuse_page_desc { | |
281 | unsigned int length; | |
282 | unsigned int offset; | |
283 | }; | |
284 | ||
7078187a MS |
285 | struct fuse_args { |
286 | struct { | |
287 | struct { | |
288 | uint32_t opcode; | |
289 | uint64_t nodeid; | |
290 | } h; | |
291 | unsigned numargs; | |
292 | struct fuse_in_arg args[3]; | |
293 | ||
294 | } in; | |
295 | struct { | |
296 | unsigned argvar:1; | |
297 | unsigned numargs; | |
298 | struct fuse_arg args[2]; | |
299 | } out; | |
300 | }; | |
301 | ||
302 | #define FUSE_ARGS(args) struct fuse_args args = {} | |
303 | ||
01e9d11a MP |
304 | /** The request IO state (for asynchronous processing) */ |
305 | struct fuse_io_priv { | |
744742d6 | 306 | struct kref refcnt; |
01e9d11a MP |
307 | int async; |
308 | spinlock_t lock; | |
309 | unsigned reqs; | |
310 | ssize_t bytes; | |
311 | size_t size; | |
312 | __u64 offset; | |
313 | bool write; | |
61c12b49 | 314 | bool should_dirty; |
01e9d11a MP |
315 | int err; |
316 | struct kiocb *iocb; | |
9d5722b7 | 317 | struct completion *done; |
7879c4e5 | 318 | bool blocking; |
01e9d11a MP |
319 | }; |
320 | ||
e1c0eecb | 321 | #define FUSE_IO_PRIV_SYNC(i) \ |
744742d6 | 322 | { \ |
1e24edca | 323 | .refcnt = KREF_INIT(1), \ |
744742d6 | 324 | .async = 0, \ |
e1c0eecb | 325 | .iocb = i, \ |
744742d6 SF |
326 | } |
327 | ||
825d6d33 MS |
328 | /** |
329 | * Request flags | |
330 | * | |
331 | * FR_ISREPLY: set if the request has reply | |
332 | * FR_FORCE: force sending of the request even if interrupted | |
333 | * FR_BACKGROUND: request is sent in the background | |
334 | * FR_WAITING: request is counted as "waiting" | |
335 | * FR_ABORTED: the request was aborted | |
336 | * FR_INTERRUPTED: the request has been interrupted | |
337 | * FR_LOCKED: data is being copied to/from the request | |
33e14b4d MS |
338 | * FR_PENDING: request is not yet in userspace |
339 | * FR_SENT: request is in userspace, waiting for an answer | |
340 | * FR_FINISHED: request is finished | |
77cd9d48 | 341 | * FR_PRIVATE: request is on private list |
825d6d33 MS |
342 | */ |
343 | enum fuse_req_flag { | |
344 | FR_ISREPLY, | |
345 | FR_FORCE, | |
346 | FR_BACKGROUND, | |
347 | FR_WAITING, | |
348 | FR_ABORTED, | |
349 | FR_INTERRUPTED, | |
350 | FR_LOCKED, | |
33e14b4d MS |
351 | FR_PENDING, |
352 | FR_SENT, | |
353 | FR_FINISHED, | |
77cd9d48 | 354 | FR_PRIVATE, |
825d6d33 MS |
355 | }; |
356 | ||
334f485d MS |
357 | /** |
358 | * A request to the client | |
dc00809a MS |
359 | * |
360 | * .waitq.lock protects the following fields: | |
361 | * - FR_ABORTED | |
362 | * - FR_LOCKED (may also be modified under fc->lock, tested under both) | |
334f485d MS |
363 | */ |
364 | struct fuse_req { | |
ce1d5a49 MS |
365 | /** This can be on either pending processing or io lists in |
366 | fuse_conn */ | |
334f485d MS |
367 | struct list_head list; |
368 | ||
a4d27e75 MS |
369 | /** Entry on the interrupts list */ |
370 | struct list_head intr_entry; | |
371 | ||
334f485d | 372 | /** refcount */ |
ec99f6d3 | 373 | refcount_t count; |
334f485d | 374 | |
825d6d33 MS |
375 | /* Request flags, updated with test/set/clear_bit() */ |
376 | unsigned long flags; | |
9bc5ddda | 377 | |
334f485d MS |
378 | /** The request input */ |
379 | struct fuse_in in; | |
380 | ||
381 | /** The request output */ | |
382 | struct fuse_out out; | |
383 | ||
384 | /** Used to wake up the task waiting for completion of request*/ | |
385 | wait_queue_head_t waitq; | |
386 | ||
387 | /** Data for asynchronous requests */ | |
388 | union { | |
b57d4264 | 389 | struct { |
baebccbe MS |
390 | struct fuse_release_in in; |
391 | struct inode *inode; | |
b57d4264 | 392 | } release; |
3ec870d5 MS |
393 | struct fuse_init_in init_in; |
394 | struct fuse_init_out init_out; | |
08cbf542 | 395 | struct cuse_init_in cuse_init_in; |
5c5c5e51 MS |
396 | struct { |
397 | struct fuse_read_in in; | |
398 | u64 attr_ver; | |
399 | } read; | |
b25e82e5 MS |
400 | struct { |
401 | struct fuse_write_in in; | |
402 | struct fuse_write_out out; | |
8b284dc4 | 403 | struct fuse_req *next; |
b25e82e5 | 404 | } write; |
2d45ba38 | 405 | struct fuse_notify_retrieve_in retrieve_in; |
334f485d MS |
406 | } misc; |
407 | ||
408 | /** page vector */ | |
4250c066 MP |
409 | struct page **pages; |
410 | ||
b2430d75 MP |
411 | /** page-descriptor vector */ |
412 | struct fuse_page_desc *page_descs; | |
413 | ||
4250c066 MP |
414 | /** size of the 'pages' array */ |
415 | unsigned max_pages; | |
416 | ||
417 | /** inline page vector */ | |
418 | struct page *inline_pages[FUSE_REQ_INLINE_PAGES]; | |
334f485d | 419 | |
b2430d75 MP |
420 | /** inline page-descriptor vector */ |
421 | struct fuse_page_desc inline_page_descs[FUSE_REQ_INLINE_PAGES]; | |
422 | ||
334f485d MS |
423 | /** number of pages in vector */ |
424 | unsigned num_pages; | |
425 | ||
334f485d | 426 | /** File used in the request (or NULL) */ |
c756e0a4 | 427 | struct fuse_file *ff; |
64c6d8ed | 428 | |
3be5a52b MS |
429 | /** Inode used in the request or NULL */ |
430 | struct inode *inode; | |
431 | ||
01e9d11a MP |
432 | /** AIO control block */ |
433 | struct fuse_io_priv *io; | |
434 | ||
3be5a52b MS |
435 | /** Link on fi->writepages */ |
436 | struct list_head writepages_entry; | |
437 | ||
64c6d8ed MS |
438 | /** Request completion callback */ |
439 | void (*end)(struct fuse_conn *, struct fuse_req *); | |
33649c91 MS |
440 | |
441 | /** Request is stolen from fuse_file->reserved_req */ | |
442 | struct file *stolen_file; | |
334f485d MS |
443 | }; |
444 | ||
f88996a9 | 445 | struct fuse_iqueue { |
e16714d8 MS |
446 | /** Connection established */ |
447 | unsigned connected; | |
448 | ||
f88996a9 MS |
449 | /** Readers of the connection are waiting on this */ |
450 | wait_queue_head_t waitq; | |
451 | ||
452 | /** The next unique request id */ | |
453 | u64 reqctr; | |
454 | ||
455 | /** The list of pending requests */ | |
456 | struct list_head pending; | |
457 | ||
458 | /** Pending interrupts */ | |
459 | struct list_head interrupts; | |
460 | ||
461 | /** Queue of pending forgets */ | |
462 | struct fuse_forget_link forget_list_head; | |
463 | struct fuse_forget_link *forget_list_tail; | |
464 | ||
465 | /** Batching of FORGET requests (positive indicates FORGET batch) */ | |
466 | int forget_batch; | |
467 | ||
468 | /** O_ASYNC requests */ | |
469 | struct fasync_struct *fasync; | |
470 | }; | |
471 | ||
be2ff42c KT |
472 | #define FUSE_PQ_HASH_BITS 8 |
473 | #define FUSE_PQ_HASH_SIZE (1 << FUSE_PQ_HASH_BITS) | |
474 | ||
3a2b5b9c | 475 | struct fuse_pqueue { |
e96edd94 MS |
476 | /** Connection established */ |
477 | unsigned connected; | |
478 | ||
45a91cb1 MS |
479 | /** Lock protecting accessess to members of this structure */ |
480 | spinlock_t lock; | |
481 | ||
be2ff42c KT |
482 | /** Hash table of requests being processed */ |
483 | struct list_head *processing; | |
3a2b5b9c MS |
484 | |
485 | /** The list of requests under I/O */ | |
486 | struct list_head io; | |
487 | }; | |
488 | ||
cc080e9e MS |
489 | /** |
490 | * Fuse device instance | |
491 | */ | |
492 | struct fuse_dev { | |
493 | /** Fuse connection for this device */ | |
494 | struct fuse_conn *fc; | |
495 | ||
c3696046 MS |
496 | /** Processing queue */ |
497 | struct fuse_pqueue pq; | |
498 | ||
cc080e9e MS |
499 | /** list entry on fc->devices */ |
500 | struct list_head entry; | |
501 | }; | |
502 | ||
d8a5ba45 MS |
503 | /** |
504 | * A Fuse connection. | |
505 | * | |
506 | * This structure is created, when the filesystem is mounted, and is | |
507 | * destroyed, when the client device is closed and the filesystem is | |
508 | * unmounted. | |
509 | */ | |
510 | struct fuse_conn { | |
d7133114 MS |
511 | /** Lock protecting accessess to members of this structure */ |
512 | spinlock_t lock; | |
513 | ||
bafa9654 | 514 | /** Refcount */ |
095fc40a | 515 | refcount_t count; |
bafa9654 | 516 | |
c3696046 MS |
517 | /** Number of fuse_dev's */ |
518 | atomic_t dev_count; | |
519 | ||
dd3e2c55 AV |
520 | struct rcu_head rcu; |
521 | ||
d8a5ba45 | 522 | /** The user id for this mount */ |
499dcf20 | 523 | kuid_t user_id; |
d8a5ba45 | 524 | |
87729a55 | 525 | /** The group id for this mount */ |
499dcf20 | 526 | kgid_t group_id; |
87729a55 | 527 | |
0b6e9ea0 SF |
528 | /** The pid namespace for this mount */ |
529 | struct pid_namespace *pid_ns; | |
530 | ||
8cb08329 EB |
531 | /** The user namespace for this mount */ |
532 | struct user_namespace *user_ns; | |
533 | ||
db50b96c MS |
534 | /** Maximum read size */ |
535 | unsigned max_read; | |
536 | ||
413ef8cb MS |
537 | /** Maximum write size */ |
538 | unsigned max_write; | |
539 | ||
5da784cc CS |
540 | /** Maxmum number of pages that can be used in a single request */ |
541 | unsigned int max_pages; | |
542 | ||
f88996a9 MS |
543 | /** Input queue */ |
544 | struct fuse_iqueue iq; | |
334f485d | 545 | |
acf99433 | 546 | /** The next unique kernel file handle */ |
75126f55 | 547 | atomic64_t khctr; |
acf99433 | 548 | |
95668a69 TH |
549 | /** rbtree of fuse_files waiting for poll events indexed by ph */ |
550 | struct rb_root polled_files; | |
551 | ||
7a6d3c8b CH |
552 | /** Maximum number of outstanding background requests */ |
553 | unsigned max_background; | |
554 | ||
555 | /** Number of background requests at which congestion starts */ | |
556 | unsigned congestion_threshold; | |
557 | ||
08a53cdc MS |
558 | /** Number of requests currently in the background */ |
559 | unsigned num_background; | |
560 | ||
d12def1b MS |
561 | /** Number of background requests currently queued for userspace */ |
562 | unsigned active_background; | |
563 | ||
564 | /** The list of background requests set aside for later queuing */ | |
565 | struct list_head bg_queue; | |
566 | ||
ae2dffa3 KT |
567 | /** Protects: max_background, congestion_threshold, num_background, |
568 | * active_background, bg_queue, blocked */ | |
569 | spinlock_t bg_lock; | |
570 | ||
796523fb MP |
571 | /** Flag indicating that INIT reply has been received. Allocating |
572 | * any fuse request will be suspended until the flag is set */ | |
573 | int initialized; | |
574 | ||
08a53cdc MS |
575 | /** Flag indicating if connection is blocked. This will be |
576 | the case before the INIT reply is received, and if there | |
577 | are too many outstading backgrounds requests */ | |
578 | int blocked; | |
579 | ||
580 | /** waitq for blocked connection */ | |
581 | wait_queue_head_t blocked_waitq; | |
de5e3dec MS |
582 | |
583 | /** waitq for reserved requests */ | |
584 | wait_queue_head_t reserved_req_waitq; | |
08a53cdc | 585 | |
69a53bf2 MS |
586 | /** Connection established, cleared on umount, connection |
587 | abort and device release */ | |
095da6cb | 588 | unsigned connected; |
1e9a4ed9 | 589 | |
3b7008b2 SL |
590 | /** Connection aborted via sysfs */ |
591 | bool aborted; | |
592 | ||
095da6cb MS |
593 | /** Connection failed (version mismatch). Cannot race with |
594 | setting other bitfields since it is only set once in INIT | |
595 | reply, before any other request, and never cleared */ | |
1729a16c | 596 | unsigned conn_error:1; |
334f485d | 597 | |
0ec7ca41 | 598 | /** Connection successful. Only set in INIT */ |
1729a16c | 599 | unsigned conn_init:1; |
0ec7ca41 | 600 | |
9cd68455 | 601 | /** Do readpages asynchronously? Only set in INIT */ |
1729a16c | 602 | unsigned async_read:1; |
9cd68455 | 603 | |
3b7008b2 SL |
604 | /** Return an unique read error after abort. Only set in INIT */ |
605 | unsigned abort_err:1; | |
606 | ||
6ff958ed | 607 | /** Do not send separate SETATTR request before open(O_TRUNC) */ |
1729a16c | 608 | unsigned atomic_o_trunc:1; |
6ff958ed | 609 | |
33670fa2 | 610 | /** Filesystem supports NFS exporting. Only set in INIT */ |
1729a16c | 611 | unsigned export_support:1; |
33670fa2 | 612 | |
d5cd66c5 PE |
613 | /** write-back cache policy (default is write-through) */ |
614 | unsigned writeback_cache:1; | |
615 | ||
5c672ab3 MS |
616 | /** allow parallel lookups and readdir (default is serialized) */ |
617 | unsigned parallel_dirops:1; | |
618 | ||
5e940c1d MS |
619 | /** handle fs handles killing suid/sgid/cap on write/chown/trunc */ |
620 | unsigned handle_killpriv:1; | |
621 | ||
5571f1e6 DS |
622 | /** cache READLINK responses in page cache */ |
623 | unsigned cache_symlinks:1; | |
624 | ||
095da6cb MS |
625 | /* |
626 | * The following bitfields are only for optimization purposes | |
627 | * and hence races in setting them will not cause malfunction | |
628 | */ | |
629 | ||
7678ac50 AG |
630 | /** Is open/release not implemented by fs? */ |
631 | unsigned no_open:1; | |
632 | ||
d9a9ea94 CA |
633 | /** Is opendir/releasedir not implemented by fs? */ |
634 | unsigned no_opendir:1; | |
635 | ||
b6aeaded | 636 | /** Is fsync not implemented by fs? */ |
1729a16c | 637 | unsigned no_fsync:1; |
b6aeaded | 638 | |
82547981 | 639 | /** Is fsyncdir not implemented by fs? */ |
1729a16c | 640 | unsigned no_fsyncdir:1; |
82547981 | 641 | |
b6aeaded | 642 | /** Is flush not implemented by fs? */ |
1729a16c | 643 | unsigned no_flush:1; |
b6aeaded | 644 | |
92a8780e | 645 | /** Is setxattr not implemented by fs? */ |
1729a16c | 646 | unsigned no_setxattr:1; |
92a8780e MS |
647 | |
648 | /** Is getxattr not implemented by fs? */ | |
1729a16c | 649 | unsigned no_getxattr:1; |
92a8780e MS |
650 | |
651 | /** Is listxattr not implemented by fs? */ | |
1729a16c | 652 | unsigned no_listxattr:1; |
92a8780e MS |
653 | |
654 | /** Is removexattr not implemented by fs? */ | |
1729a16c | 655 | unsigned no_removexattr:1; |
92a8780e | 656 | |
37fb3a30 | 657 | /** Are posix file locking primitives not implemented by fs? */ |
1729a16c | 658 | unsigned no_lock:1; |
71421259 | 659 | |
31d40d74 | 660 | /** Is access not implemented by fs? */ |
1729a16c | 661 | unsigned no_access:1; |
31d40d74 | 662 | |
fd72faac | 663 | /** Is create not implemented by fs? */ |
1729a16c | 664 | unsigned no_create:1; |
fd72faac | 665 | |
a4d27e75 | 666 | /** Is interrupt not implemented by fs? */ |
1729a16c | 667 | unsigned no_interrupt:1; |
a4d27e75 | 668 | |
b2d2272f | 669 | /** Is bmap not implemented by fs? */ |
1729a16c | 670 | unsigned no_bmap:1; |
b2d2272f | 671 | |
95668a69 TH |
672 | /** Is poll not implemented by fs? */ |
673 | unsigned no_poll:1; | |
674 | ||
78bb6cb9 | 675 | /** Do multi-page cached writes */ |
1729a16c | 676 | unsigned big_writes:1; |
78bb6cb9 | 677 | |
e0a43ddc MS |
678 | /** Don't apply umask to creation modes */ |
679 | unsigned dont_mask:1; | |
680 | ||
37fb3a30 MS |
681 | /** Are BSD file locking primitives not implemented by fs? */ |
682 | unsigned no_flock:1; | |
683 | ||
519c6040 MS |
684 | /** Is fallocate not implemented by fs? */ |
685 | unsigned no_fallocate:1; | |
686 | ||
1560c974 MS |
687 | /** Is rename with flags implemented by fs? */ |
688 | unsigned no_rename2:1; | |
689 | ||
72d0d248 BF |
690 | /** Use enhanced/automatic page cache invalidation. */ |
691 | unsigned auto_inval_data:1; | |
692 | ||
634734b6 | 693 | /** Does the filesystem support readdirplus? */ |
0b05b183 AA |
694 | unsigned do_readdirplus:1; |
695 | ||
634734b6 EW |
696 | /** Does the filesystem want adaptive readdirplus? */ |
697 | unsigned readdirplus_auto:1; | |
698 | ||
60b9df7a MS |
699 | /** Does the filesystem support asynchronous direct-IO submission? */ |
700 | unsigned async_dio:1; | |
701 | ||
0b5da8db R |
702 | /** Is lseek not implemented by fs? */ |
703 | unsigned no_lseek:1; | |
704 | ||
60bcc88a SF |
705 | /** Does the filesystem support posix acls? */ |
706 | unsigned posix_acl:1; | |
707 | ||
29433a29 MS |
708 | /** Check permissions based on the file mode or not? */ |
709 | unsigned default_permissions:1; | |
710 | ||
711 | /** Allow other than the mounter user to access the filesystem ? */ | |
712 | unsigned allow_other:1; | |
713 | ||
88bc7d50 NV |
714 | /** Does the filesystem support copy_file_range? */ |
715 | unsigned no_copy_file_range:1; | |
716 | ||
0cd5b885 MS |
717 | /** The number of requests waiting for completion */ |
718 | atomic_t num_waiting; | |
719 | ||
45714d65 MS |
720 | /** Negotiated minor version */ |
721 | unsigned minor; | |
722 | ||
bafa9654 MS |
723 | /** Entry on the fuse_conn_list */ |
724 | struct list_head entry; | |
725 | ||
b6f2fcbc MS |
726 | /** Device ID from super block */ |
727 | dev_t dev; | |
bafa9654 MS |
728 | |
729 | /** Dentries in the control filesystem */ | |
730 | struct dentry *ctl_dentry[FUSE_CTL_NUM_DENTRIES]; | |
731 | ||
732 | /** number of dentries used in the above array */ | |
733 | int ctl_ndents; | |
385a17bf | 734 | |
9c8ef561 MS |
735 | /** Key for lock owner ID scrambling */ |
736 | u32 scramble_key[4]; | |
0ec7ca41 MS |
737 | |
738 | /** Reserved request for the DESTROY message */ | |
739 | struct fuse_req *destroy_req; | |
1fb69e78 MS |
740 | |
741 | /** Version counter for attribute changes */ | |
4510d86f | 742 | atomic64_t attr_version; |
43901aab TH |
743 | |
744 | /** Called on final put */ | |
745 | void (*release)(struct fuse_conn *); | |
3b463ae0 JM |
746 | |
747 | /** Super block for this connection. */ | |
748 | struct super_block *sb; | |
749 | ||
750 | /** Read/write semaphore to hold when accessing sb. */ | |
751 | struct rw_semaphore killsb; | |
cc080e9e MS |
752 | |
753 | /** List of device instances belonging to this connection */ | |
754 | struct list_head devices; | |
d8a5ba45 MS |
755 | }; |
756 | ||
d8a5ba45 MS |
757 | static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb) |
758 | { | |
6383bdaa | 759 | return sb->s_fs_info; |
d8a5ba45 MS |
760 | } |
761 | ||
762 | static inline struct fuse_conn *get_fuse_conn(struct inode *inode) | |
763 | { | |
764 | return get_fuse_conn_super(inode->i_sb); | |
765 | } | |
766 | ||
767 | static inline struct fuse_inode *get_fuse_inode(struct inode *inode) | |
768 | { | |
769 | return container_of(inode, struct fuse_inode, inode); | |
770 | } | |
771 | ||
772 | static inline u64 get_node_id(struct inode *inode) | |
773 | { | |
774 | return get_fuse_inode(inode)->nodeid; | |
775 | } | |
776 | ||
d123d8e1 MS |
777 | static inline int invalid_nodeid(u64 nodeid) |
778 | { | |
779 | return !nodeid || nodeid == FUSE_ROOT_ID; | |
780 | } | |
781 | ||
4510d86f KT |
782 | static inline u64 fuse_get_attr_version(struct fuse_conn *fc) |
783 | { | |
784 | return atomic64_read(&fc->attr_version); | |
785 | } | |
786 | ||
334f485d | 787 | /** Device operations */ |
4b6f5d20 | 788 | extern const struct file_operations fuse_dev_operations; |
334f485d | 789 | |
4269590a | 790 | extern const struct dentry_operations fuse_dentry_operations; |
0ce267ff | 791 | extern const struct dentry_operations fuse_root_dentry_operations; |
dbd561d2 | 792 | |
3b463ae0 JM |
793 | /** |
794 | * Inode to nodeid comparison. | |
795 | */ | |
796 | int fuse_inode_eq(struct inode *inode, void *_nodeidp); | |
797 | ||
e5e5558e MS |
798 | /** |
799 | * Get a filled in inode | |
800 | */ | |
b48badf0 | 801 | struct inode *fuse_iget(struct super_block *sb, u64 nodeid, |
1fb69e78 MS |
802 | int generation, struct fuse_attr *attr, |
803 | u64 attr_valid, u64 attr_version); | |
e5e5558e | 804 | |
13983d06 | 805 | int fuse_lookup_name(struct super_block *sb, u64 nodeid, const struct qstr *name, |
33670fa2 MS |
806 | struct fuse_entry_out *outarg, struct inode **inode); |
807 | ||
e5e5558e MS |
808 | /** |
809 | * Send FORGET command | |
810 | */ | |
07e77dca MS |
811 | void fuse_queue_forget(struct fuse_conn *fc, struct fuse_forget_link *forget, |
812 | u64 nodeid, u64 nlookup); | |
813 | ||
814 | struct fuse_forget_link *fuse_alloc_forget(void); | |
e5e5558e | 815 | |
0b05b183 AA |
816 | /* Used by READDIRPLUS */ |
817 | void fuse_force_forget(struct file *file, u64 nodeid); | |
818 | ||
04730fef | 819 | /** |
361b1eb5 | 820 | * Initialize READ or READDIR request |
04730fef | 821 | */ |
a6643094 | 822 | void fuse_read_fill(struct fuse_req *req, struct file *file, |
2106cb18 | 823 | loff_t pos, size_t count, int opcode); |
04730fef MS |
824 | |
825 | /** | |
826 | * Send OPEN or OPENDIR request | |
827 | */ | |
91fe96b4 | 828 | int fuse_open_common(struct inode *inode, struct file *file, bool isdir); |
04730fef | 829 | |
acf99433 | 830 | struct fuse_file *fuse_file_alloc(struct fuse_conn *fc); |
fd72faac | 831 | void fuse_file_free(struct fuse_file *ff); |
c7b7143c | 832 | void fuse_finish_open(struct inode *inode, struct file *file); |
fd72faac | 833 | |
ebf84d0c | 834 | void fuse_sync_release(struct fuse_inode *fi, struct fuse_file *ff, int flags); |
c756e0a4 | 835 | |
04730fef MS |
836 | /** |
837 | * Send RELEASE or RELEASEDIR request | |
838 | */ | |
2e64ff15 | 839 | void fuse_release_common(struct file *file, bool isdir); |
04730fef | 840 | |
82547981 MS |
841 | /** |
842 | * Send FSYNC or FSYNCDIR request | |
843 | */ | |
02c24a82 | 844 | int fuse_fsync_common(struct file *file, loff_t start, loff_t end, |
a9c2d1e8 | 845 | int datasync, int opcode); |
82547981 | 846 | |
95668a69 TH |
847 | /** |
848 | * Notify poll wakeup | |
849 | */ | |
850 | int fuse_notify_poll_wakeup(struct fuse_conn *fc, | |
851 | struct fuse_notify_poll_wakeup_out *outarg); | |
852 | ||
b6aeaded | 853 | /** |
1779381d | 854 | * Initialize file operations on a regular file |
b6aeaded MS |
855 | */ |
856 | void fuse_init_file_inode(struct inode *inode); | |
857 | ||
e5e5558e | 858 | /** |
1779381d | 859 | * Initialize inode operations on regular files and special files |
e5e5558e MS |
860 | */ |
861 | void fuse_init_common(struct inode *inode); | |
862 | ||
863 | /** | |
1779381d | 864 | * Initialize inode and file operations on a directory |
e5e5558e MS |
865 | */ |
866 | void fuse_init_dir(struct inode *inode); | |
867 | ||
868 | /** | |
1779381d | 869 | * Initialize inode operations on a symlink |
e5e5558e MS |
870 | */ |
871 | void fuse_init_symlink(struct inode *inode); | |
872 | ||
873 | /** | |
874 | * Change attributes of an inode | |
875 | */ | |
1fb69e78 MS |
876 | void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, |
877 | u64 attr_valid, u64 attr_version); | |
e5e5558e | 878 | |
3be5a52b MS |
879 | void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr, |
880 | u64 attr_valid); | |
881 | ||
334f485d MS |
882 | /** |
883 | * Initialize the client device | |
884 | */ | |
885 | int fuse_dev_init(void); | |
886 | ||
887 | /** | |
888 | * Cleanup the client device | |
889 | */ | |
890 | void fuse_dev_cleanup(void); | |
891 | ||
bafa9654 | 892 | int fuse_ctl_init(void); |
7736e8cc | 893 | void __exit fuse_ctl_cleanup(void); |
bafa9654 | 894 | |
334f485d MS |
895 | /** |
896 | * Allocate a request | |
897 | */ | |
4250c066 | 898 | struct fuse_req *fuse_request_alloc(unsigned npages); |
334f485d | 899 | |
4250c066 | 900 | struct fuse_req *fuse_request_alloc_nofs(unsigned npages); |
3be5a52b | 901 | |
e52a8250 MS |
902 | bool fuse_req_realloc_pages(struct fuse_conn *fc, struct fuse_req *req, |
903 | gfp_t flags); | |
904 | ||
905 | ||
334f485d MS |
906 | /** |
907 | * Free a request | |
908 | */ | |
909 | void fuse_request_free(struct fuse_req *req); | |
910 | ||
334f485d | 911 | /** |
b111c8c0 MP |
912 | * Get a request, may fail with -ENOMEM, |
913 | * caller should specify # elements in req->pages[] explicitly | |
334f485d | 914 | */ |
b111c8c0 | 915 | struct fuse_req *fuse_get_req(struct fuse_conn *fc, unsigned npages); |
8b41e671 MP |
916 | struct fuse_req *fuse_get_req_for_background(struct fuse_conn *fc, |
917 | unsigned npages); | |
b111c8c0 | 918 | |
36cf66ed MP |
919 | /* |
920 | * Increment reference count on request | |
921 | */ | |
922 | void __fuse_get_request(struct fuse_req *req); | |
923 | ||
33649c91 MS |
924 | /** |
925 | * Gets a requests for a file operation, always succeeds | |
926 | */ | |
b111c8c0 MP |
927 | struct fuse_req *fuse_get_req_nofail_nopages(struct fuse_conn *fc, |
928 | struct file *file); | |
33649c91 | 929 | |
334f485d | 930 | /** |
ce1d5a49 MS |
931 | * Decrement reference count of a request. If count goes to zero free |
932 | * the request. | |
334f485d MS |
933 | */ |
934 | void fuse_put_request(struct fuse_conn *fc, struct fuse_req *req); | |
935 | ||
936 | /** | |
7c352bdf | 937 | * Send a request (synchronous) |
334f485d | 938 | */ |
b93f858a | 939 | void fuse_request_send(struct fuse_conn *fc, struct fuse_req *req); |
334f485d | 940 | |
7078187a MS |
941 | /** |
942 | * Simple request sending that does request allocation and freeing | |
943 | */ | |
944 | ssize_t fuse_simple_request(struct fuse_conn *fc, struct fuse_args *args); | |
945 | ||
334f485d MS |
946 | /** |
947 | * Send a request in the background | |
948 | */ | |
b93f858a | 949 | void fuse_request_send_background(struct fuse_conn *fc, struct fuse_req *req); |
63825b4e | 950 | bool fuse_request_queue_background(struct fuse_conn *fc, struct fuse_req *req); |
3be5a52b | 951 | |
5a5fb1ea | 952 | /* Abort all requests */ |
eb98e3bd | 953 | void fuse_abort_conn(struct fuse_conn *fc); |
b8f95e5d | 954 | void fuse_wait_aborted(struct fuse_conn *fc); |
69a53bf2 | 955 | |
e5e5558e MS |
956 | /** |
957 | * Invalidate inode attributes | |
958 | */ | |
959 | void fuse_invalidate_attr(struct inode *inode); | |
bafa9654 | 960 | |
dbd561d2 MS |
961 | void fuse_invalidate_entry_cache(struct dentry *entry); |
962 | ||
451418fc AG |
963 | void fuse_invalidate_atime(struct inode *inode); |
964 | ||
d123d8e1 MS |
965 | u64 entry_attr_timeout(struct fuse_entry_out *o); |
966 | void fuse_change_entry_timeout(struct dentry *entry, struct fuse_entry_out *o); | |
967 | ||
bafa9654 MS |
968 | /** |
969 | * Acquire reference to fuse_conn | |
970 | */ | |
971 | struct fuse_conn *fuse_conn_get(struct fuse_conn *fc); | |
972 | ||
0d179aa5 TH |
973 | /** |
974 | * Initialize fuse_conn | |
975 | */ | |
8cb08329 | 976 | void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns); |
0d179aa5 | 977 | |
bafa9654 MS |
978 | /** |
979 | * Release reference to fuse_conn | |
980 | */ | |
981 | void fuse_conn_put(struct fuse_conn *fc); | |
982 | ||
cc080e9e MS |
983 | struct fuse_dev *fuse_dev_alloc(struct fuse_conn *fc); |
984 | void fuse_dev_free(struct fuse_dev *fud); | |
985 | ||
bafa9654 MS |
986 | /** |
987 | * Add connection to control filesystem | |
988 | */ | |
989 | int fuse_ctl_add_conn(struct fuse_conn *fc); | |
990 | ||
991 | /** | |
992 | * Remove connection from control filesystem | |
993 | */ | |
994 | void fuse_ctl_remove_conn(struct fuse_conn *fc); | |
a5bfffac TS |
995 | |
996 | /** | |
997 | * Is file type valid? | |
998 | */ | |
999 | int fuse_valid_type(int m); | |
e57ac683 MS |
1000 | |
1001 | /** | |
c2132c1b | 1002 | * Is current process allowed to perform filesystem operation? |
e57ac683 | 1003 | */ |
c2132c1b | 1004 | int fuse_allow_current_process(struct fuse_conn *fc); |
f3332114 MS |
1005 | |
1006 | u64 fuse_lock_owner_id(struct fuse_conn *fc, fl_owner_t id); | |
bcb4be80 | 1007 | |
703c7362 SF |
1008 | void fuse_update_ctime(struct inode *inode); |
1009 | ||
5b97eeac | 1010 | int fuse_update_attributes(struct inode *inode, struct file *file); |
3be5a52b MS |
1011 | |
1012 | void fuse_flush_writepages(struct inode *inode); | |
1013 | ||
1014 | void fuse_set_nowrite(struct inode *inode); | |
1015 | void fuse_release_nowrite(struct inode *inode); | |
5c5c5e51 | 1016 | |
3b463ae0 JM |
1017 | /** |
1018 | * File-system tells the kernel to invalidate cache for the given node id. | |
1019 | */ | |
1020 | int fuse_reverse_inval_inode(struct super_block *sb, u64 nodeid, | |
1021 | loff_t offset, loff_t len); | |
1022 | ||
1023 | /** | |
1024 | * File-system tells the kernel to invalidate parent attributes and | |
1025 | * the dentry matching parent/name. | |
451d0f59 JM |
1026 | * |
1027 | * If the child_nodeid is non-zero and: | |
1028 | * - matches the inode number for the dentry matching parent/name, | |
1029 | * - is not a mount point | |
1030 | * - is a file or oan empty directory | |
1031 | * then the dentry is unhashed (d_delete()). | |
3b463ae0 JM |
1032 | */ |
1033 | int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid, | |
451d0f59 | 1034 | u64 child_nodeid, struct qstr *name); |
3b463ae0 | 1035 | |
08cbf542 TH |
1036 | int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file, |
1037 | bool isdir); | |
ea8cd333 PE |
1038 | |
1039 | /** | |
1040 | * fuse_direct_io() flags | |
1041 | */ | |
1042 | ||
1043 | /** If set, it is WRITE; otherwise - READ */ | |
1044 | #define FUSE_DIO_WRITE (1 << 0) | |
1045 | ||
1046 | /** CUSE pass fuse_direct_io() a file which f_mapping->host is not from FUSE */ | |
1047 | #define FUSE_DIO_CUSE (1 << 1) | |
1048 | ||
d22a943f AV |
1049 | ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter, |
1050 | loff_t *ppos, int flags); | |
08cbf542 TH |
1051 | long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg, |
1052 | unsigned int flags); | |
b18da0c5 MS |
1053 | long fuse_ioctl_common(struct file *file, unsigned int cmd, |
1054 | unsigned long arg, unsigned int flags); | |
076ccb76 | 1055 | __poll_t fuse_file_poll(struct file *file, poll_table *wait); |
08cbf542 TH |
1056 | int fuse_dev_release(struct inode *inode, struct file *file); |
1057 | ||
b0aa7606 MP |
1058 | bool fuse_write_update_size(struct inode *inode, loff_t pos); |
1059 | ||
ab9e13f7 | 1060 | int fuse_flush_times(struct inode *inode, struct fuse_file *ff); |
1e18bda8 | 1061 | int fuse_write_inode(struct inode *inode, struct writeback_control *wbc); |
a1d75f25 | 1062 | |
62490330 | 1063 | int fuse_do_setattr(struct dentry *dentry, struct iattr *attr, |
efb9fa9e MP |
1064 | struct file *file); |
1065 | ||
9759bd51 MS |
1066 | void fuse_set_initialized(struct fuse_conn *fc); |
1067 | ||
63576c13 MS |
1068 | void fuse_unlock_inode(struct inode *inode, bool locked); |
1069 | bool fuse_lock_inode(struct inode *inode); | |
5c672ab3 | 1070 | |
60bcc88a SF |
1071 | int fuse_setxattr(struct inode *inode, const char *name, const void *value, |
1072 | size_t size, int flags); | |
1073 | ssize_t fuse_getxattr(struct inode *inode, const char *name, void *value, | |
1074 | size_t size); | |
703c7362 | 1075 | ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size); |
60bcc88a | 1076 | int fuse_removexattr(struct inode *inode, const char *name); |
703c7362 | 1077 | extern const struct xattr_handler *fuse_xattr_handlers[]; |
60bcc88a | 1078 | extern const struct xattr_handler *fuse_acl_xattr_handlers[]; |
e45b2546 | 1079 | extern const struct xattr_handler *fuse_no_acl_xattr_handlers[]; |
60bcc88a SF |
1080 | |
1081 | struct posix_acl; | |
1082 | struct posix_acl *fuse_get_acl(struct inode *inode, int type); | |
1083 | int fuse_set_acl(struct inode *inode, struct posix_acl *acl, int type); | |
703c7362 | 1084 | |
d123d8e1 MS |
1085 | |
1086 | /* readdir.c */ | |
1087 | int fuse_readdir(struct file *file, struct dir_context *ctx); | |
1088 | ||
29d434b3 | 1089 | #endif /* _FS_FUSE_I_H */ |