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Miklos Szeredid8a5ba42005-09-09 13:10:26 -07001/*
2 FUSE: Filesystem in Userspace
Miklos Szeredi1729a162008-11-26 12:03:54 +01003 Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
Miklos Szeredid8a5ba42005-09-09 13:10:26 -07004
5 This program can be distributed under the terms of the GNU GPL.
6 See the file COPYING.
7*/
8
Tejun Heo29d434b2008-10-16 16:08:57 +02009#ifndef _FS_FUSE_I_H
10#define _FS_FUSE_I_H
11
Miklos Szeredid8a5ba42005-09-09 13:10:26 -070012#include <linux/fuse.h>
13#include <linux/fs.h>
Miklos Szeredi51eb01e2006-06-25 05:48:50 -070014#include <linux/mount.h>
Miklos Szeredid8a5ba42005-09-09 13:10:26 -070015#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>
Miklos Szeredibafa9652006-06-25 05:48:51 -070020#include <linux/mutex.h>
Miklos Szeredi3be5a522008-04-30 00:54:41 -070021#include <linux/rwsem.h>
Tejun Heo95668a62008-11-26 12:03:55 +010022#include <linux/rbtree.h>
23#include <linux/poll.h>
Miklos Szeredi5a18ec12011-02-25 14:44:58 +010024#include <linux/workqueue.h>
Miklos Szeredid8a5ba42005-09-09 13:10:26 -070025
Miklos Szeredi334f4852005-09-09 13:10:27 -070026/** Max number of pages that can be used in a single read request */
27#define FUSE_MAX_PAGES_PER_REQ 32
28
Miklos Szeredi3be5a522008-04-30 00:54:41 -070029/** Bias for fi->writectr, meaning new writepages must not be sent */
30#define FUSE_NOWRITE INT_MIN
31
Miklos Szeredi1d3d7522006-01-06 00:19:40 -080032/** It could be as large as PATH_MAX, but would that have any uses? */
33#define FUSE_NAME_MAX 1024
34
Miklos Szeredibafa9652006-06-25 05:48:51 -070035/** Number of dentries for each connection in the control filesystem */
Csaba Henk79a9d992009-08-26 19:18:24 +020036#define FUSE_CTL_NUM_DENTRIES 5
Miklos Szeredibafa9652006-06-25 05:48:51 -070037
Miklos Szeredi1e9a4ed2005-09-09 13:10:31 -070038/** If the FUSE_DEFAULT_PERMISSIONS flag is given, the filesystem
39 module will check permissions based on the file mode. Otherwise no
40 permission checking is done in the kernel */
41#define FUSE_DEFAULT_PERMISSIONS (1 << 0)
42
43/** If the FUSE_ALLOW_OTHER flag is given, then not only the user
44 doing the mount will be allowed to access the filesystem */
45#define FUSE_ALLOW_OTHER (1 << 1)
46
Maxim Patlasov4250c062012-10-26 19:48:07 +040047/** Number of page pointers embedded in fuse_req */
48#define FUSE_REQ_INLINE_PAGES 1
49
Miklos Szeredibafa9652006-06-25 05:48:51 -070050/** List of active connections */
51extern struct list_head fuse_conn_list;
52
53/** Global mutex protecting fuse_conn_list and the control filesystem */
54extern struct mutex fuse_mutex;
Miklos Szeredi413ef8c2005-09-09 13:10:35 -070055
Csaba Henk79a9d992009-08-26 19:18:24 +020056/** Module parameters */
57extern unsigned max_user_bgreq;
58extern unsigned max_user_congthresh;
59
Miklos Szeredi07e77dc2010-12-07 20:16:56 +010060/* One forget request */
61struct fuse_forget_link {
Miklos Szeredi02c048b2010-12-07 20:16:56 +010062 struct fuse_forget_one forget_one;
Miklos Szeredi07e77dc2010-12-07 20:16:56 +010063 struct fuse_forget_link *next;
64};
65
Miklos Szeredid8a5ba42005-09-09 13:10:26 -070066/** FUSE inode */
67struct fuse_inode {
68 /** Inode data */
69 struct inode inode;
70
71 /** Unique ID, which identifies the inode between userspace
72 * and kernel */
73 u64 nodeid;
74
Miklos Szeredi9e6268d2005-09-09 13:10:29 -070075 /** Number of lookups on this inode */
76 u64 nlookup;
77
Miklos Szeredie5e55582005-09-09 13:10:28 -070078 /** The request used for sending the FORGET message */
Miklos Szeredi07e77dc2010-12-07 20:16:56 +010079 struct fuse_forget_link *forget;
Miklos Szeredie5e55582005-09-09 13:10:28 -070080
Miklos Szeredid8a5ba42005-09-09 13:10:26 -070081 /** Time in jiffies until the file attributes are valid */
Miklos Szeredi0a0898c2006-07-30 03:04:10 -070082 u64 i_time;
Miklos Szerediebc14c42007-10-16 23:31:03 -070083
84 /** The sticky bit in inode->i_mode may have been removed, so
85 preserve the original mode */
Al Viro541af6a2011-07-26 03:17:33 -040086 umode_t orig_i_mode;
Miklos Szeredi1fb69e72007-10-18 03:06:58 -070087
Pavel Shilovsky45c72cd2012-05-10 19:49:38 +040088 /** 64 bit inode number */
89 u64 orig_ino;
90
Miklos Szeredi1fb69e72007-10-18 03:06:58 -070091 /** Version of last attribute change */
92 u64 attr_version;
Miklos Szeredi93a8c3c2007-10-18 03:07:03 -070093
94 /** Files usable in writepage. Protected by fc->lock */
95 struct list_head write_files;
Miklos Szeredi3be5a522008-04-30 00:54:41 -070096
97 /** Writepages pending on truncate or fsync */
98 struct list_head queued_writes;
99
100 /** Number of sent writes, a negative bias (FUSE_NOWRITE)
101 * means more writes are blocked */
102 int writectr;
103
104 /** Waitq for writepage completion */
105 wait_queue_head_t page_waitq;
106
107 /** List of writepage requestst (pending or sent) */
108 struct list_head writepages;
Feng Shuo4582a4a2013-01-15 11:23:28 +0800109
110 /** Miscellaneous bits describing inode state */
111 unsigned long state;
112};
113
114/** FUSE inode state bits */
115enum {
116 /** Advise readdirplus */
117 FUSE_I_ADVISE_RDPLUS,
Miklos Szeredi6314efe2013-10-01 16:41:22 +0200118 /** Initialized with readdirplus */
119 FUSE_I_INIT_RDPLUS,
Maxim Patlasov06a7c3c2013-08-30 17:06:04 +0400120 /** An operation changing file size is in progress */
121 FUSE_I_SIZE_UNSTABLE,
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700122};
123
Miklos Szeredida5e4712009-04-28 16:56:36 +0200124struct fuse_conn;
125
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700126/** FUSE specific file data */
127struct fuse_file {
Miklos Szeredida5e4712009-04-28 16:56:36 +0200128 /** Fuse connection for this file */
129 struct fuse_conn *fc;
130
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700131 /** Request reserved for flush and release */
Miklos Szeredi33649c92006-06-25 05:48:52 -0700132 struct fuse_req *reserved_req;
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700133
Tejun Heoacf99432008-11-26 12:03:55 +0100134 /** Kernel file handle guaranteed to be unique */
135 u64 kh;
136
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700137 /** File handle used by userspace */
138 u64 fh;
Miklos Szeredic756e0a2007-10-16 23:31:00 -0700139
Miklos Szeredida5e4712009-04-28 16:56:36 +0200140 /** Node id of this file */
141 u64 nodeid;
142
Miklos Szeredic756e0a2007-10-16 23:31:00 -0700143 /** Refcount */
144 atomic_t count;
Miklos Szeredi93a8c3c2007-10-18 03:07:03 -0700145
Miklos Szeredic7b71432009-04-28 16:56:37 +0200146 /** FOPEN_* flags returned by open */
147 u32 open_flags;
148
Miklos Szeredi93a8c3c2007-10-18 03:07:03 -0700149 /** Entry on inode's write_files list */
150 struct list_head write_entry;
Tejun Heo95668a62008-11-26 12:03:55 +0100151
152 /** RB node to be linked on fuse_conn->polled_files */
153 struct rb_node polled_node;
154
155 /** Wait queue head for poll */
156 wait_queue_head_t poll_wait;
Miklos Szeredi37fb3a32011-08-08 16:08:08 +0200157
158 /** Has flock been performed on this file? */
159 bool flock:1;
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700160};
161
Miklos Szeredi334f4852005-09-09 13:10:27 -0700162/** One input argument of a request */
163struct fuse_in_arg {
164 unsigned size;
165 const void *value;
166};
167
168/** The request input */
169struct fuse_in {
170 /** The request header */
171 struct fuse_in_header h;
172
173 /** True if the data for the last argument is in req->pages */
174 unsigned argpages:1;
175
176 /** Number of arguments */
177 unsigned numargs;
178
179 /** Array of arguments */
180 struct fuse_in_arg args[3];
181};
182
183/** One output argument of a request */
184struct fuse_arg {
185 unsigned size;
186 void *value;
187};
188
189/** The request output */
190struct fuse_out {
191 /** Header returned from userspace */
192 struct fuse_out_header h;
193
Miklos Szeredi095da6c2006-01-16 22:14:52 -0800194 /*
195 * The following bitfields are not changed during the request
196 * processing
197 */
198
Miklos Szeredi334f4852005-09-09 13:10:27 -0700199 /** Last argument is variable length (can be shorter than
200 arg->size) */
201 unsigned argvar:1;
202
203 /** Last argument is a list of pages to copy data to */
204 unsigned argpages:1;
205
206 /** Zero partially or not copied pages */
207 unsigned page_zeroing:1;
208
Miklos Szeredice534fb2010-05-25 15:06:07 +0200209 /** Pages may be replaced with new ones */
210 unsigned page_replace:1;
211
Miklos Szeredi334f4852005-09-09 13:10:27 -0700212 /** Number or arguments */
213 unsigned numargs;
214
215 /** Array of arguments */
Miklos Szeredif704dcb2014-12-12 09:49:05 +0100216 struct fuse_arg args[2];
Miklos Szeredi334f4852005-09-09 13:10:27 -0700217};
218
Maxim Patlasovb2430d72012-10-26 19:49:24 +0400219/** FUSE page descriptor */
220struct fuse_page_desc {
221 unsigned int length;
222 unsigned int offset;
223};
224
Miklos Szeredi70781872014-12-12 09:49:05 +0100225struct fuse_args {
226 struct {
227 struct {
228 uint32_t opcode;
229 uint64_t nodeid;
230 } h;
231 unsigned numargs;
232 struct fuse_in_arg args[3];
233
234 } in;
235 struct {
236 unsigned argvar:1;
237 unsigned numargs;
238 struct fuse_arg args[2];
239 } out;
240};
241
242#define FUSE_ARGS(args) struct fuse_args args = {}
243
Miklos Szeredi83cfd492006-01-16 22:14:31 -0800244/** The request state */
245enum fuse_req_state {
246 FUSE_REQ_INIT = 0,
247 FUSE_REQ_PENDING,
248 FUSE_REQ_READING,
249 FUSE_REQ_SENT,
Miklos Szeredia4d27e72006-06-25 05:48:54 -0700250 FUSE_REQ_WRITING,
Miklos Szeredi83cfd492006-01-16 22:14:31 -0800251 FUSE_REQ_FINISHED
252};
253
Maxim Patlasov01e9d112012-12-14 19:20:41 +0400254/** The request IO state (for asynchronous processing) */
255struct fuse_io_priv {
256 int async;
257 spinlock_t lock;
258 unsigned reqs;
259 ssize_t bytes;
260 size_t size;
261 __u64 offset;
262 bool write;
263 int err;
264 struct kiocb *iocb;
265 struct file *file;
266};
267
Miklos Szeredi334f4852005-09-09 13:10:27 -0700268/**
269 * A request to the client
270 */
271struct fuse_req {
Miklos Szeredice1d5a42006-04-10 22:54:58 -0700272 /** This can be on either pending processing or io lists in
273 fuse_conn */
Miklos Szeredi334f4852005-09-09 13:10:27 -0700274 struct list_head list;
275
Miklos Szeredia4d27e72006-06-25 05:48:54 -0700276 /** Entry on the interrupts list */
277 struct list_head intr_entry;
278
Miklos Szeredi334f4852005-09-09 13:10:27 -0700279 /** refcount */
280 atomic_t count;
281
Miklos Szeredia4d27e72006-06-25 05:48:54 -0700282 /** Unique ID for the interrupt request */
283 u64 intr_unique;
284
Miklos Szeredi095da6c2006-01-16 22:14:52 -0800285 /*
286 * The following bitfields are either set once before the
287 * request is queued or setting/clearing them is protected by
Miklos Szeredid7133112006-04-10 22:54:55 -0700288 * fuse_conn->lock
Miklos Szeredi095da6c2006-01-16 22:14:52 -0800289 */
290
Miklos Szeredi334f4852005-09-09 13:10:27 -0700291 /** True if the request has reply */
292 unsigned isreply:1;
293
Miklos Szeredi51eb01e2006-06-25 05:48:50 -0700294 /** Force sending of the request even if interrupted */
295 unsigned force:1;
296
Miklos Szeredif9a28422006-06-25 05:48:53 -0700297 /** The request was aborted */
298 unsigned aborted:1;
Miklos Szeredi334f4852005-09-09 13:10:27 -0700299
300 /** Request is sent in the background */
301 unsigned background:1;
302
Miklos Szeredia4d27e72006-06-25 05:48:54 -0700303 /** The request has been interrupted */
304 unsigned interrupted:1;
305
Miklos Szeredi334f4852005-09-09 13:10:27 -0700306 /** Data is being copied to/from the request */
307 unsigned locked:1;
308
Miklos Szeredi9bc5ddd2006-04-11 21:16:09 +0200309 /** Request is counted as "waiting" */
310 unsigned waiting:1;
311
Miklos Szeredi83cfd492006-01-16 22:14:31 -0800312 /** State of the request */
313 enum fuse_req_state state;
Miklos Szeredi334f4852005-09-09 13:10:27 -0700314
315 /** The request input */
316 struct fuse_in in;
317
318 /** The request output */
319 struct fuse_out out;
320
321 /** Used to wake up the task waiting for completion of request*/
322 wait_queue_head_t waitq;
323
324 /** Data for asynchronous requests */
325 union {
Miklos Szeredib57d4262008-02-06 01:38:39 -0800326 struct {
Miklos Szeredibaebccb2014-12-12 09:49:04 +0100327 struct fuse_release_in in;
328 struct inode *inode;
Miklos Szeredib57d4262008-02-06 01:38:39 -0800329 } release;
Miklos Szeredi3ec870d2006-01-06 00:19:41 -0800330 struct fuse_init_in init_in;
331 struct fuse_init_out init_out;
Tejun Heo08cbf542009-04-14 10:54:53 +0900332 struct cuse_init_in cuse_init_in;
Miklos Szeredi5c5c5e52008-04-30 00:54:43 -0700333 struct {
334 struct fuse_read_in in;
335 u64 attr_ver;
336 } read;
Miklos Szeredib25e82e2007-10-18 03:07:03 -0700337 struct {
338 struct fuse_write_in in;
339 struct fuse_write_out out;
Miklos Szeredi8b284dc2013-10-01 16:44:53 +0200340 struct fuse_req *next;
Miklos Szeredib25e82e2007-10-18 03:07:03 -0700341 } write;
Miklos Szeredi2d45ba32010-07-12 14:41:40 +0200342 struct fuse_notify_retrieve_in retrieve_in;
Miklos Szeredi334f4852005-09-09 13:10:27 -0700343 } misc;
344
345 /** page vector */
Maxim Patlasov4250c062012-10-26 19:48:07 +0400346 struct page **pages;
347
Maxim Patlasovb2430d72012-10-26 19:49:24 +0400348 /** page-descriptor vector */
349 struct fuse_page_desc *page_descs;
350
Maxim Patlasov4250c062012-10-26 19:48:07 +0400351 /** size of the 'pages' array */
352 unsigned max_pages;
353
354 /** inline page vector */
355 struct page *inline_pages[FUSE_REQ_INLINE_PAGES];
Miklos Szeredi334f4852005-09-09 13:10:27 -0700356
Maxim Patlasovb2430d72012-10-26 19:49:24 +0400357 /** inline page-descriptor vector */
358 struct fuse_page_desc inline_page_descs[FUSE_REQ_INLINE_PAGES];
359
Miklos Szeredi334f4852005-09-09 13:10:27 -0700360 /** number of pages in vector */
361 unsigned num_pages;
362
Miklos Szeredi334f4852005-09-09 13:10:27 -0700363 /** File used in the request (or NULL) */
Miklos Szeredic756e0a2007-10-16 23:31:00 -0700364 struct fuse_file *ff;
Miklos Szeredi64c6d8e2006-01-16 22:14:42 -0800365
Miklos Szeredi3be5a522008-04-30 00:54:41 -0700366 /** Inode used in the request or NULL */
367 struct inode *inode;
368
Maxim Patlasov01e9d112012-12-14 19:20:41 +0400369 /** AIO control block */
370 struct fuse_io_priv *io;
371
Miklos Szeredi3be5a522008-04-30 00:54:41 -0700372 /** Link on fi->writepages */
373 struct list_head writepages_entry;
374
Miklos Szeredi64c6d8e2006-01-16 22:14:42 -0800375 /** Request completion callback */
376 void (*end)(struct fuse_conn *, struct fuse_req *);
Miklos Szeredi33649c92006-06-25 05:48:52 -0700377
378 /** Request is stolen from fuse_file->reserved_req */
379 struct file *stolen_file;
Miklos Szeredi334f4852005-09-09 13:10:27 -0700380};
381
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700382/**
383 * A Fuse connection.
384 *
385 * This structure is created, when the filesystem is mounted, and is
386 * destroyed, when the client device is closed and the filesystem is
387 * unmounted.
388 */
389struct fuse_conn {
Miklos Szeredid7133112006-04-10 22:54:55 -0700390 /** Lock protecting accessess to members of this structure */
391 spinlock_t lock;
392
Miklos Szeredibafa9652006-06-25 05:48:51 -0700393 /** Refcount */
394 atomic_t count;
395
Al Virodd3e2c52013-10-03 21:21:39 -0400396 struct rcu_head rcu;
397
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700398 /** The user id for this mount */
Eric W. Biederman499dcf22012-02-07 16:26:03 -0800399 kuid_t user_id;
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700400
Miklos Szeredi87729a52005-09-09 13:10:34 -0700401 /** The group id for this mount */
Eric W. Biederman499dcf22012-02-07 16:26:03 -0800402 kgid_t group_id;
Miklos Szeredi87729a52005-09-09 13:10:34 -0700403
Miklos Szeredi1e9a4ed2005-09-09 13:10:31 -0700404 /** The fuse mount flags for this mount */
405 unsigned flags;
406
Miklos Szeredidb50b962005-09-09 13:10:33 -0700407 /** Maximum read size */
408 unsigned max_read;
409
Miklos Szeredi413ef8c2005-09-09 13:10:35 -0700410 /** Maximum write size */
411 unsigned max_write;
412
Miklos Szeredi334f4852005-09-09 13:10:27 -0700413 /** Readers of the connection are waiting on this */
414 wait_queue_head_t waitq;
415
416 /** The list of pending requests */
417 struct list_head pending;
418
419 /** The list of requests being processed */
420 struct list_head processing;
421
Miklos Szeredid77a1d52006-01-16 22:14:31 -0800422 /** The list of requests under I/O */
423 struct list_head io;
424
Tejun Heoacf99432008-11-26 12:03:55 +0100425 /** The next unique kernel file handle */
426 u64 khctr;
427
Tejun Heo95668a62008-11-26 12:03:55 +0100428 /** rbtree of fuse_files waiting for poll events indexed by ph */
429 struct rb_root polled_files;
430
Csaba Henk7a6d3c82009-07-01 17:28:41 -0700431 /** Maximum number of outstanding background requests */
432 unsigned max_background;
433
434 /** Number of background requests at which congestion starts */
435 unsigned congestion_threshold;
436
Miklos Szeredi08a53cd2006-04-10 22:54:59 -0700437 /** Number of requests currently in the background */
438 unsigned num_background;
439
Miklos Szeredid12def12008-02-06 01:38:39 -0800440 /** Number of background requests currently queued for userspace */
441 unsigned active_background;
442
443 /** The list of background requests set aside for later queuing */
444 struct list_head bg_queue;
445
Miklos Szeredia4d27e72006-06-25 05:48:54 -0700446 /** Pending interrupts */
447 struct list_head interrupts;
448
Miklos Szeredi07e77dc2010-12-07 20:16:56 +0100449 /** Queue of pending forgets */
450 struct fuse_forget_link forget_list_head;
451 struct fuse_forget_link *forget_list_tail;
452
453 /** Batching of FORGET requests (positive indicates FORGET batch) */
454 int forget_batch;
455
Maxim Patlasov796523fb2013-03-21 18:02:15 +0400456 /** Flag indicating that INIT reply has been received. Allocating
457 * any fuse request will be suspended until the flag is set */
458 int initialized;
459
Miklos Szeredi08a53cd2006-04-10 22:54:59 -0700460 /** Flag indicating if connection is blocked. This will be
461 the case before the INIT reply is received, and if there
462 are too many outstading backgrounds requests */
463 int blocked;
464
465 /** waitq for blocked connection */
466 wait_queue_head_t blocked_waitq;
467
Miklos Szeredide5e3de2007-10-16 23:31:00 -0700468 /** waitq for reserved requests */
469 wait_queue_head_t reserved_req_waitq;
470
Miklos Szeredi334f4852005-09-09 13:10:27 -0700471 /** The next unique request id */
472 u64 reqctr;
473
Miklos Szeredi69a53bf2006-01-16 22:14:41 -0800474 /** Connection established, cleared on umount, connection
475 abort and device release */
Miklos Szeredi095da6c2006-01-16 22:14:52 -0800476 unsigned connected;
Miklos Szeredi1e9a4ed2005-09-09 13:10:31 -0700477
Miklos Szeredi095da6c2006-01-16 22:14:52 -0800478 /** Connection failed (version mismatch). Cannot race with
479 setting other bitfields since it is only set once in INIT
480 reply, before any other request, and never cleared */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100481 unsigned conn_error:1;
Miklos Szeredi334f4852005-09-09 13:10:27 -0700482
Miklos Szeredi0ec7ca42006-12-06 20:35:52 -0800483 /** Connection successful. Only set in INIT */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100484 unsigned conn_init:1;
Miklos Szeredi0ec7ca42006-12-06 20:35:52 -0800485
Miklos Szeredi9cd68452006-02-01 03:04:40 -0800486 /** Do readpages asynchronously? Only set in INIT */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100487 unsigned async_read:1;
Miklos Szeredi9cd68452006-02-01 03:04:40 -0800488
Miklos Szeredi6ff958e2007-10-18 03:07:02 -0700489 /** Do not send separate SETATTR request before open(O_TRUNC) */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100490 unsigned atomic_o_trunc:1;
Miklos Szeredi6ff958e2007-10-18 03:07:02 -0700491
Miklos Szeredi33670fa2008-07-25 01:49:02 -0700492 /** Filesystem supports NFS exporting. Only set in INIT */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100493 unsigned export_support:1;
Miklos Szeredi33670fa2008-07-25 01:49:02 -0700494
Tejun Heoa325f9b2009-04-14 10:54:52 +0900495 /** Set if bdi is valid */
496 unsigned bdi_initialized:1;
497
Pavel Emelyanovd5cd66c2013-10-10 17:10:30 +0400498 /** write-back cache policy (default is write-through) */
499 unsigned writeback_cache:1;
500
Miklos Szeredi095da6c2006-01-16 22:14:52 -0800501 /*
502 * The following bitfields are only for optimization purposes
503 * and hence races in setting them will not cause malfunction
504 */
505
Andrew Gallagher7678ac52013-11-05 16:05:52 +0100506 /** Is open/release not implemented by fs? */
507 unsigned no_open:1;
508
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700509 /** Is fsync not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100510 unsigned no_fsync:1;
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700511
Miklos Szeredi82547982005-09-09 13:10:38 -0700512 /** Is fsyncdir not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100513 unsigned no_fsyncdir:1;
Miklos Szeredi82547982005-09-09 13:10:38 -0700514
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700515 /** Is flush not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100516 unsigned no_flush:1;
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700517
Miklos Szeredi92a87802005-09-09 13:10:31 -0700518 /** Is setxattr not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100519 unsigned no_setxattr:1;
Miklos Szeredi92a87802005-09-09 13:10:31 -0700520
521 /** Is getxattr not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100522 unsigned no_getxattr:1;
Miklos Szeredi92a87802005-09-09 13:10:31 -0700523
524 /** Is listxattr not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100525 unsigned no_listxattr:1;
Miklos Szeredi92a87802005-09-09 13:10:31 -0700526
527 /** Is removexattr not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100528 unsigned no_removexattr:1;
Miklos Szeredi92a87802005-09-09 13:10:31 -0700529
Miklos Szeredi37fb3a32011-08-08 16:08:08 +0200530 /** Are posix file locking primitives not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100531 unsigned no_lock:1;
Miklos Szeredi71421252006-06-25 05:48:52 -0700532
Miklos Szeredi31d40d72005-11-07 00:59:50 -0800533 /** Is access not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100534 unsigned no_access:1;
Miklos Szeredi31d40d72005-11-07 00:59:50 -0800535
Miklos Szeredifd72faa2005-11-07 00:59:51 -0800536 /** Is create not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100537 unsigned no_create:1;
Miklos Szeredifd72faa2005-11-07 00:59:51 -0800538
Miklos Szeredia4d27e72006-06-25 05:48:54 -0700539 /** Is interrupt not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100540 unsigned no_interrupt:1;
Miklos Szeredia4d27e72006-06-25 05:48:54 -0700541
Miklos Szeredib2d22722006-12-06 20:35:51 -0800542 /** Is bmap not implemented by fs? */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100543 unsigned no_bmap:1;
Miklos Szeredib2d22722006-12-06 20:35:51 -0800544
Tejun Heo95668a62008-11-26 12:03:55 +0100545 /** Is poll not implemented by fs? */
546 unsigned no_poll:1;
547
Miklos Szeredi78bb6cb2008-05-12 14:02:32 -0700548 /** Do multi-page cached writes */
Miklos Szeredi1729a162008-11-26 12:03:54 +0100549 unsigned big_writes:1;
Miklos Szeredi78bb6cb2008-05-12 14:02:32 -0700550
Miklos Szeredie0a43dd2009-06-30 20:12:23 +0200551 /** Don't apply umask to creation modes */
552 unsigned dont_mask:1;
553
Miklos Szeredi37fb3a32011-08-08 16:08:08 +0200554 /** Are BSD file locking primitives not implemented by fs? */
555 unsigned no_flock:1;
556
Miklos Szeredi519c6042012-04-26 10:56:36 +0200557 /** Is fallocate not implemented by fs? */
558 unsigned no_fallocate:1;
559
Miklos Szeredi1560c972014-04-28 16:43:44 +0200560 /** Is rename with flags implemented by fs? */
561 unsigned no_rename2:1;
562
Brian Foster72d0d242012-07-16 15:23:48 -0400563 /** Use enhanced/automatic page cache invalidation. */
564 unsigned auto_inval_data:1;
565
Eric Wong634734b2013-02-06 22:29:01 +0000566 /** Does the filesystem support readdirplus? */
Anand V. Avati0b05b182012-08-19 08:53:23 -0400567 unsigned do_readdirplus:1;
568
Eric Wong634734b2013-02-06 22:29:01 +0000569 /** Does the filesystem want adaptive readdirplus? */
570 unsigned readdirplus_auto:1;
571
Miklos Szeredi60b9df72013-05-01 14:37:21 +0200572 /** Does the filesystem support asynchronous direct-IO submission? */
573 unsigned async_dio:1;
574
Miklos Szeredi0cd5b882006-01-16 22:14:38 -0800575 /** The number of requests waiting for completion */
576 atomic_t num_waiting;
577
Miklos Szeredi45714d62006-01-06 00:19:36 -0800578 /** Negotiated minor version */
579 unsigned minor;
580
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700581 /** Backing dev info */
582 struct backing_dev_info bdi;
Miklos Szeredif543f252006-01-16 22:14:35 -0800583
Miklos Szeredibafa9652006-06-25 05:48:51 -0700584 /** Entry on the fuse_conn_list */
585 struct list_head entry;
586
Miklos Szeredib6f2fcb2008-04-30 00:54:34 -0700587 /** Device ID from super block */
588 dev_t dev;
Miklos Szeredibafa9652006-06-25 05:48:51 -0700589
590 /** Dentries in the control filesystem */
591 struct dentry *ctl_dentry[FUSE_CTL_NUM_DENTRIES];
592
593 /** number of dentries used in the above array */
594 int ctl_ndents;
Jeff Dike385a17b2006-04-10 22:54:52 -0700595
596 /** O_ASYNC requests */
597 struct fasync_struct *fasync;
Miklos Szeredi9c8ef562006-06-25 05:48:55 -0700598
599 /** Key for lock owner ID scrambling */
600 u32 scramble_key[4];
Miklos Szeredi0ec7ca42006-12-06 20:35:52 -0800601
602 /** Reserved request for the DESTROY message */
603 struct fuse_req *destroy_req;
Miklos Szeredi1fb69e72007-10-18 03:06:58 -0700604
605 /** Version counter for attribute changes */
606 u64 attr_version;
Tejun Heo43901aa2008-11-26 12:03:56 +0100607
608 /** Called on final put */
609 void (*release)(struct fuse_conn *);
John Muir3b463ae2009-05-31 11:13:57 -0400610
611 /** Super block for this connection. */
612 struct super_block *sb;
613
614 /** Read/write semaphore to hold when accessing sb. */
615 struct rw_semaphore killsb;
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700616};
617
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700618static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
619{
Miklos Szeredi6383bda2006-01-16 22:14:29 -0800620 return sb->s_fs_info;
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700621}
622
623static inline struct fuse_conn *get_fuse_conn(struct inode *inode)
624{
625 return get_fuse_conn_super(inode->i_sb);
626}
627
628static inline struct fuse_inode *get_fuse_inode(struct inode *inode)
629{
630 return container_of(inode, struct fuse_inode, inode);
631}
632
633static inline u64 get_node_id(struct inode *inode)
634{
635 return get_fuse_inode(inode)->nodeid;
636}
637
Miklos Szeredi334f4852005-09-09 13:10:27 -0700638/** Device operations */
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800639extern const struct file_operations fuse_dev_operations;
Miklos Szeredi334f4852005-09-09 13:10:27 -0700640
Al Viro42695902009-02-20 05:59:13 +0000641extern const struct dentry_operations fuse_dentry_operations;
Miklos Szeredidbd561d2008-07-25 01:49:00 -0700642
Miklos Szeredid8a5ba42005-09-09 13:10:26 -0700643/**
John Muir3b463ae2009-05-31 11:13:57 -0400644 * Inode to nodeid comparison.
645 */
646int fuse_inode_eq(struct inode *inode, void *_nodeidp);
647
648/**
Miklos Szeredie5e55582005-09-09 13:10:28 -0700649 * Get a filled in inode
650 */
Miklos Szeredib48badf2008-04-30 00:54:44 -0700651struct inode *fuse_iget(struct super_block *sb, u64 nodeid,
Miklos Szeredi1fb69e72007-10-18 03:06:58 -0700652 int generation, struct fuse_attr *attr,
653 u64 attr_valid, u64 attr_version);
Miklos Szeredie5e55582005-09-09 13:10:28 -0700654
Miklos Szeredi33670fa2008-07-25 01:49:02 -0700655int fuse_lookup_name(struct super_block *sb, u64 nodeid, struct qstr *name,
656 struct fuse_entry_out *outarg, struct inode **inode);
657
Miklos Szeredie5e55582005-09-09 13:10:28 -0700658/**
659 * Send FORGET command
660 */
Miklos Szeredi07e77dc2010-12-07 20:16:56 +0100661void fuse_queue_forget(struct fuse_conn *fc, struct fuse_forget_link *forget,
662 u64 nodeid, u64 nlookup);
663
664struct fuse_forget_link *fuse_alloc_forget(void);
Miklos Szeredie5e55582005-09-09 13:10:28 -0700665
Anand V. Avati0b05b182012-08-19 08:53:23 -0400666/* Used by READDIRPLUS */
667void fuse_force_forget(struct file *file, u64 nodeid);
668
Miklos Szeredie5e55582005-09-09 13:10:28 -0700669/**
Miklos Szeredi361b1eb52006-01-16 22:14:45 -0800670 * Initialize READ or READDIR request
Miklos Szeredi04730fe2005-09-09 13:10:36 -0700671 */
Miklos Szeredia6643092007-11-28 16:22:00 -0800672void fuse_read_fill(struct fuse_req *req, struct file *file,
Miklos Szeredi2106cb12009-04-28 16:56:37 +0200673 loff_t pos, size_t count, int opcode);
Miklos Szeredi04730fe2005-09-09 13:10:36 -0700674
675/**
676 * Send OPEN or OPENDIR request
677 */
Miklos Szeredi91fe96b2009-04-28 16:56:37 +0200678int fuse_open_common(struct inode *inode, struct file *file, bool isdir);
Miklos Szeredi04730fe2005-09-09 13:10:36 -0700679
Tejun Heoacf99432008-11-26 12:03:55 +0100680struct fuse_file *fuse_file_alloc(struct fuse_conn *fc);
Miklos Szeredic7b71432009-04-28 16:56:37 +0200681struct fuse_file *fuse_file_get(struct fuse_file *ff);
Miklos Szeredifd72faa2005-11-07 00:59:51 -0800682void fuse_file_free(struct fuse_file *ff);
Miklos Szeredic7b71432009-04-28 16:56:37 +0200683void fuse_finish_open(struct inode *inode, struct file *file);
Miklos Szeredifd72faa2005-11-07 00:59:51 -0800684
Miklos Szeredi8b0797a2009-04-28 16:56:39 +0200685void fuse_sync_release(struct fuse_file *ff, int flags);
Miklos Szeredic756e0a2007-10-16 23:31:00 -0700686
Miklos Szeredi04730fe2005-09-09 13:10:36 -0700687/**
688 * Send RELEASE or RELEASEDIR request
689 */
Miklos Szeredi8b0797a2009-04-28 16:56:39 +0200690void fuse_release_common(struct file *file, int opcode);
Miklos Szeredi04730fe2005-09-09 13:10:36 -0700691
692/**
Miklos Szeredi82547982005-09-09 13:10:38 -0700693 * Send FSYNC or FSYNCDIR request
694 */
Josef Bacik02c24a82011-07-16 20:44:56 -0400695int fuse_fsync_common(struct file *file, loff_t start, loff_t end,
696 int datasync, int isdir);
Miklos Szeredi82547982005-09-09 13:10:38 -0700697
698/**
Tejun Heo95668a62008-11-26 12:03:55 +0100699 * Notify poll wakeup
700 */
701int fuse_notify_poll_wakeup(struct fuse_conn *fc,
702 struct fuse_notify_poll_wakeup_out *outarg);
703
704/**
Miklos Szeredi17793812005-10-30 15:02:51 -0800705 * Initialize file operations on a regular file
Miklos Szeredib6aeade2005-09-09 13:10:30 -0700706 */
707void fuse_init_file_inode(struct inode *inode);
708
709/**
Miklos Szeredi17793812005-10-30 15:02:51 -0800710 * Initialize inode operations on regular files and special files
Miklos Szeredie5e55582005-09-09 13:10:28 -0700711 */
712void fuse_init_common(struct inode *inode);
713
714/**
Miklos Szeredi17793812005-10-30 15:02:51 -0800715 * Initialize inode and file operations on a directory
Miklos Szeredie5e55582005-09-09 13:10:28 -0700716 */
717void fuse_init_dir(struct inode *inode);
718
719/**
Miklos Szeredi17793812005-10-30 15:02:51 -0800720 * Initialize inode operations on a symlink
Miklos Szeredie5e55582005-09-09 13:10:28 -0700721 */
722void fuse_init_symlink(struct inode *inode);
723
724/**
725 * Change attributes of an inode
726 */
Miklos Szeredi1fb69e72007-10-18 03:06:58 -0700727void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr,
728 u64 attr_valid, u64 attr_version);
Miklos Szeredie5e55582005-09-09 13:10:28 -0700729
Miklos Szeredi3be5a522008-04-30 00:54:41 -0700730void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
731 u64 attr_valid);
732
Miklos Szeredie5e55582005-09-09 13:10:28 -0700733/**
Miklos Szeredi334f4852005-09-09 13:10:27 -0700734 * Initialize the client device
735 */
736int fuse_dev_init(void);
737
738/**
739 * Cleanup the client device
740 */
741void fuse_dev_cleanup(void);
742
Miklos Szeredibafa9652006-06-25 05:48:51 -0700743int fuse_ctl_init(void);
Fabian Frederick7736e8c2014-04-23 18:14:42 +0200744void __exit fuse_ctl_cleanup(void);
Miklos Szeredibafa9652006-06-25 05:48:51 -0700745
Miklos Szeredi334f4852005-09-09 13:10:27 -0700746/**
747 * Allocate a request
748 */
Maxim Patlasov4250c062012-10-26 19:48:07 +0400749struct fuse_req *fuse_request_alloc(unsigned npages);
Miklos Szeredi334f4852005-09-09 13:10:27 -0700750
Maxim Patlasov4250c062012-10-26 19:48:07 +0400751struct fuse_req *fuse_request_alloc_nofs(unsigned npages);
Miklos Szeredi3be5a522008-04-30 00:54:41 -0700752
Miklos Szeredi334f4852005-09-09 13:10:27 -0700753/**
754 * Free a request
755 */
756void fuse_request_free(struct fuse_req *req);
757
758/**
Maxim Patlasovb111c8c2012-10-26 19:48:30 +0400759 * Get a request, may fail with -ENOMEM,
760 * caller should specify # elements in req->pages[] explicitly
Miklos Szeredi334f4852005-09-09 13:10:27 -0700761 */
Maxim Patlasovb111c8c2012-10-26 19:48:30 +0400762struct fuse_req *fuse_get_req(struct fuse_conn *fc, unsigned npages);
Maxim Patlasov8b41e672013-03-21 18:02:04 +0400763struct fuse_req *fuse_get_req_for_background(struct fuse_conn *fc,
764 unsigned npages);
Maxim Patlasovb111c8c2012-10-26 19:48:30 +0400765
Maxim Patlasov36cf66e2012-12-14 19:20:51 +0400766/*
767 * Increment reference count on request
768 */
769void __fuse_get_request(struct fuse_req *req);
770
Maxim Patlasovb111c8c2012-10-26 19:48:30 +0400771/**
Miklos Szeredi33649c92006-06-25 05:48:52 -0700772 * Gets a requests for a file operation, always succeeds
773 */
Maxim Patlasovb111c8c2012-10-26 19:48:30 +0400774struct fuse_req *fuse_get_req_nofail_nopages(struct fuse_conn *fc,
775 struct file *file);
Miklos Szeredi33649c92006-06-25 05:48:52 -0700776
777/**
Miklos Szeredice1d5a42006-04-10 22:54:58 -0700778 * Decrement reference count of a request. If count goes to zero free
779 * the request.
Miklos Szeredi334f4852005-09-09 13:10:27 -0700780 */
781void fuse_put_request(struct fuse_conn *fc, struct fuse_req *req);
782
783/**
Miklos Szeredi7c352bd2005-09-09 13:10:39 -0700784 * Send a request (synchronous)
Miklos Szeredi334f4852005-09-09 13:10:27 -0700785 */
Tejun Heob93f8582008-11-26 12:03:55 +0100786void fuse_request_send(struct fuse_conn *fc, struct fuse_req *req);
Miklos Szeredi334f4852005-09-09 13:10:27 -0700787
788/**
Miklos Szeredi70781872014-12-12 09:49:05 +0100789 * Simple request sending that does request allocation and freeing
790 */
791ssize_t fuse_simple_request(struct fuse_conn *fc, struct fuse_args *args);
792
793/**
Miklos Szeredi334f4852005-09-09 13:10:27 -0700794 * Send a request in the background
795 */
Tejun Heob93f8582008-11-26 12:03:55 +0100796void fuse_request_send_background(struct fuse_conn *fc, struct fuse_req *req);
Miklos Szeredi334f4852005-09-09 13:10:27 -0700797
Tejun Heob93f8582008-11-26 12:03:55 +0100798void fuse_request_send_background_locked(struct fuse_conn *fc,
799 struct fuse_req *req);
Miklos Szeredi3be5a522008-04-30 00:54:41 -0700800
Miklos Szeredi5a5fb1e2006-04-26 10:48:55 +0200801/* Abort all requests */
Miklos Szeredi69a53bf2006-01-16 22:14:41 -0800802void fuse_abort_conn(struct fuse_conn *fc);
803
Miklos Szeredi1e9a4ed2005-09-09 13:10:31 -0700804/**
Miklos Szeredie5e55582005-09-09 13:10:28 -0700805 * Invalidate inode attributes
806 */
807void fuse_invalidate_attr(struct inode *inode);
Miklos Szeredibafa9652006-06-25 05:48:51 -0700808
Miklos Szeredidbd561d2008-07-25 01:49:00 -0700809void fuse_invalidate_entry_cache(struct dentry *entry);
810
Andrew Gallagher451418f2013-11-05 03:55:43 -0800811void fuse_invalidate_atime(struct inode *inode);
812
Miklos Szeredibafa9652006-06-25 05:48:51 -0700813/**
814 * Acquire reference to fuse_conn
815 */
816struct fuse_conn *fuse_conn_get(struct fuse_conn *fc);
817
818/**
Tejun Heo0d179aa2008-11-26 12:03:55 +0100819 * Initialize fuse_conn
820 */
Tejun Heoa325f9b2009-04-14 10:54:52 +0900821void fuse_conn_init(struct fuse_conn *fc);
Tejun Heo0d179aa2008-11-26 12:03:55 +0100822
823/**
Miklos Szeredibafa9652006-06-25 05:48:51 -0700824 * Release reference to fuse_conn
825 */
826void fuse_conn_put(struct fuse_conn *fc);
827
828/**
829 * Add connection to control filesystem
830 */
831int fuse_ctl_add_conn(struct fuse_conn *fc);
832
833/**
834 * Remove connection from control filesystem
835 */
836void fuse_ctl_remove_conn(struct fuse_conn *fc);
Timo Savolaa5bfffac2007-04-08 16:04:00 -0700837
838/**
839 * Is file type valid?
840 */
841int fuse_valid_type(int m);
Miklos Szeredie57ac682007-10-18 03:06:58 -0700842
843/**
Anatol Pomozovc2132c12013-01-14 22:30:00 -0800844 * Is current process allowed to perform filesystem operation?
Miklos Szeredie57ac682007-10-18 03:06:58 -0700845 */
Anatol Pomozovc2132c12013-01-14 22:30:00 -0800846int fuse_allow_current_process(struct fuse_conn *fc);
Miklos Szeredif3332112007-10-18 03:07:04 -0700847
848u64 fuse_lock_owner_id(struct fuse_conn *fc, fl_owner_t id);
Miklos Szeredibcb4be82007-11-28 16:21:59 -0800849
850int fuse_update_attributes(struct inode *inode, struct kstat *stat,
851 struct file *file, bool *refreshed);
Miklos Szeredi3be5a522008-04-30 00:54:41 -0700852
853void fuse_flush_writepages(struct inode *inode);
854
855void fuse_set_nowrite(struct inode *inode);
856void fuse_release_nowrite(struct inode *inode);
Miklos Szeredi5c5c5e52008-04-30 00:54:43 -0700857
858u64 fuse_get_attr_version(struct fuse_conn *fc);
Tejun Heo29d434b2008-10-16 16:08:57 +0200859
John Muir3b463ae2009-05-31 11:13:57 -0400860/**
861 * File-system tells the kernel to invalidate cache for the given node id.
862 */
863int fuse_reverse_inval_inode(struct super_block *sb, u64 nodeid,
864 loff_t offset, loff_t len);
865
866/**
867 * File-system tells the kernel to invalidate parent attributes and
868 * the dentry matching parent/name.
John Muir451d0f52011-12-06 21:50:06 +0100869 *
870 * If the child_nodeid is non-zero and:
871 * - matches the inode number for the dentry matching parent/name,
872 * - is not a mount point
873 * - is a file or oan empty directory
874 * then the dentry is unhashed (d_delete()).
John Muir3b463ae2009-05-31 11:13:57 -0400875 */
876int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid,
John Muir451d0f52011-12-06 21:50:06 +0100877 u64 child_nodeid, struct qstr *name);
John Muir3b463ae2009-05-31 11:13:57 -0400878
Tejun Heo08cbf542009-04-14 10:54:53 +0900879int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
880 bool isdir);
Pavel Emelyanovea8cd332013-10-10 17:12:05 +0400881
882/**
883 * fuse_direct_io() flags
884 */
885
886/** If set, it is WRITE; otherwise - READ */
887#define FUSE_DIO_WRITE (1 << 0)
888
889/** CUSE pass fuse_direct_io() a file which f_mapping->host is not from FUSE */
890#define FUSE_DIO_CUSE (1 << 1)
891
Al Virod22a9432014-03-16 15:50:47 -0400892ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter,
893 loff_t *ppos, int flags);
Tejun Heo08cbf542009-04-14 10:54:53 +0900894long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
895 unsigned int flags);
Miklos Szeredib18da0c2011-12-13 11:58:49 +0100896long fuse_ioctl_common(struct file *file, unsigned int cmd,
897 unsigned long arg, unsigned int flags);
Tejun Heo08cbf542009-04-14 10:54:53 +0900898unsigned fuse_file_poll(struct file *file, poll_table *wait);
899int fuse_dev_release(struct inode *inode, struct file *file);
900
Maxim Patlasovb0aa7602013-12-26 19:51:11 +0400901bool fuse_write_update_size(struct inode *inode, loff_t pos);
902
Maxim Patlasovab9e13f2014-04-28 14:19:24 +0200903int fuse_flush_times(struct inode *inode, struct fuse_file *ff);
Miklos Szeredi1e18bda2014-04-28 14:19:23 +0200904int fuse_write_inode(struct inode *inode, struct writeback_control *wbc);
Miklos Szeredia1d75f22010-07-12 14:41:40 +0200905
Maxim Patlasovefb9fa92012-12-18 14:05:08 +0400906int fuse_do_setattr(struct inode *inode, struct iattr *attr,
907 struct file *file);
908
Miklos Szeredi9759bd512015-01-06 10:45:35 +0100909void fuse_set_initialized(struct fuse_conn *fc);
910
Tejun Heo29d434b2008-10-16 16:08:57 +0200911#endif /* _FS_FUSE_I_H */