Commit | Line | Data |
---|---|---|
b6aeaded MS |
1 | /* |
2 | FUSE: Filesystem in Userspace | |
3 | Copyright (C) 2001-2005 Miklos Szeredi <miklos@szeredi.hu> | |
4 | ||
5 | This program can be distributed under the terms of the GNU GPL. | |
6 | See the file COPYING. | |
7 | */ | |
8 | ||
9 | #include "fuse_i.h" | |
10 | ||
11 | #include <linux/pagemap.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/kernel.h> | |
14 | ||
45323fb7 MS |
15 | static struct file_operations fuse_direct_io_file_operations; |
16 | ||
fd72faac MS |
17 | static int fuse_send_open(struct inode *inode, struct file *file, int isdir, |
18 | struct fuse_open_out *outargp) | |
b6aeaded MS |
19 | { |
20 | struct fuse_conn *fc = get_fuse_conn(inode); | |
b6aeaded | 21 | struct fuse_open_in inarg; |
fd72faac MS |
22 | struct fuse_req *req; |
23 | int err; | |
24 | ||
25 | req = fuse_get_request(fc); | |
26 | if (!req) | |
27 | return -EINTR; | |
28 | ||
29 | memset(&inarg, 0, sizeof(inarg)); | |
30 | inarg.flags = file->f_flags & ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC); | |
31 | req->in.h.opcode = isdir ? FUSE_OPENDIR : FUSE_OPEN; | |
32 | req->in.h.nodeid = get_node_id(inode); | |
33 | req->inode = inode; | |
34 | req->in.numargs = 1; | |
35 | req->in.args[0].size = sizeof(inarg); | |
36 | req->in.args[0].value = &inarg; | |
37 | req->out.numargs = 1; | |
38 | req->out.args[0].size = sizeof(*outargp); | |
39 | req->out.args[0].value = outargp; | |
40 | request_send(fc, req); | |
41 | err = req->out.h.error; | |
42 | fuse_put_request(fc, req); | |
43 | ||
44 | return err; | |
45 | } | |
46 | ||
47 | struct fuse_file *fuse_file_alloc(void) | |
48 | { | |
49 | struct fuse_file *ff; | |
50 | ff = kmalloc(sizeof(struct fuse_file), GFP_KERNEL); | |
51 | if (ff) { | |
52 | ff->release_req = fuse_request_alloc(); | |
53 | if (!ff->release_req) { | |
54 | kfree(ff); | |
55 | ff = NULL; | |
56 | } | |
57 | } | |
58 | return ff; | |
59 | } | |
60 | ||
61 | void fuse_file_free(struct fuse_file *ff) | |
62 | { | |
63 | fuse_request_free(ff->release_req); | |
64 | kfree(ff); | |
65 | } | |
66 | ||
67 | void fuse_finish_open(struct inode *inode, struct file *file, | |
68 | struct fuse_file *ff, struct fuse_open_out *outarg) | |
69 | { | |
70 | if (outarg->open_flags & FOPEN_DIRECT_IO) | |
71 | file->f_op = &fuse_direct_io_file_operations; | |
72 | if (!(outarg->open_flags & FOPEN_KEEP_CACHE)) | |
73 | invalidate_inode_pages(inode->i_mapping); | |
74 | ff->fh = outarg->fh; | |
75 | file->private_data = ff; | |
76 | } | |
77 | ||
78 | int fuse_open_common(struct inode *inode, struct file *file, int isdir) | |
79 | { | |
b6aeaded MS |
80 | struct fuse_open_out outarg; |
81 | struct fuse_file *ff; | |
82 | int err; | |
b6aeaded | 83 | |
dd190d06 MS |
84 | /* VFS checks this, but only _after_ ->open() */ |
85 | if (file->f_flags & O_DIRECT) | |
86 | return -EINVAL; | |
87 | ||
b6aeaded MS |
88 | err = generic_file_open(inode, file); |
89 | if (err) | |
90 | return err; | |
91 | ||
92 | /* If opening the root node, no lookup has been performed on | |
93 | it, so the attributes must be refreshed */ | |
94 | if (get_node_id(inode) == FUSE_ROOT_ID) { | |
fd72faac | 95 | err = fuse_do_getattr(inode); |
b6aeaded MS |
96 | if (err) |
97 | return err; | |
98 | } | |
99 | ||
fd72faac | 100 | ff = fuse_file_alloc(); |
b6aeaded | 101 | if (!ff) |
fd72faac | 102 | return -ENOMEM; |
b6aeaded | 103 | |
fd72faac MS |
104 | err = fuse_send_open(inode, file, isdir, &outarg); |
105 | if (err) | |
106 | fuse_file_free(ff); | |
107 | else { | |
108 | if (isdir) | |
109 | outarg.open_flags &= ~FOPEN_DIRECT_IO; | |
110 | fuse_finish_open(inode, file, ff, &outarg); | |
b6aeaded MS |
111 | } |
112 | ||
b6aeaded MS |
113 | return err; |
114 | } | |
115 | ||
fd72faac MS |
116 | void fuse_send_release(struct fuse_conn *fc, struct fuse_file *ff, |
117 | u64 nodeid, struct inode *inode, int flags, int isdir) | |
b6aeaded | 118 | { |
fd72faac | 119 | struct fuse_req * req = ff->release_req; |
b6aeaded MS |
120 | struct fuse_release_in *inarg = &req->misc.release_in; |
121 | ||
122 | inarg->fh = ff->fh; | |
fd72faac | 123 | inarg->flags = flags; |
04730fef | 124 | req->in.h.opcode = isdir ? FUSE_RELEASEDIR : FUSE_RELEASE; |
fd72faac | 125 | req->in.h.nodeid = nodeid; |
b6aeaded MS |
126 | req->inode = inode; |
127 | req->in.numargs = 1; | |
128 | req->in.args[0].size = sizeof(struct fuse_release_in); | |
129 | req->in.args[0].value = inarg; | |
130 | request_send_background(fc, req); | |
131 | kfree(ff); | |
fd72faac MS |
132 | } |
133 | ||
134 | int fuse_release_common(struct inode *inode, struct file *file, int isdir) | |
135 | { | |
136 | struct fuse_file *ff = file->private_data; | |
137 | if (ff) { | |
138 | struct fuse_conn *fc = get_fuse_conn(inode); | |
139 | u64 nodeid = get_node_id(inode); | |
140 | fuse_send_release(fc, ff, nodeid, inode, file->f_flags, isdir); | |
141 | } | |
b6aeaded MS |
142 | |
143 | /* Return value is ignored by VFS */ | |
144 | return 0; | |
145 | } | |
146 | ||
04730fef MS |
147 | static int fuse_open(struct inode *inode, struct file *file) |
148 | { | |
149 | return fuse_open_common(inode, file, 0); | |
150 | } | |
151 | ||
152 | static int fuse_release(struct inode *inode, struct file *file) | |
153 | { | |
154 | return fuse_release_common(inode, file, 0); | |
155 | } | |
156 | ||
b6aeaded MS |
157 | static int fuse_flush(struct file *file) |
158 | { | |
159 | struct inode *inode = file->f_dentry->d_inode; | |
160 | struct fuse_conn *fc = get_fuse_conn(inode); | |
161 | struct fuse_file *ff = file->private_data; | |
162 | struct fuse_req *req; | |
163 | struct fuse_flush_in inarg; | |
164 | int err; | |
165 | ||
166 | if (fc->no_flush) | |
167 | return 0; | |
168 | ||
7c352bdf | 169 | req = fuse_get_request(fc); |
b6aeaded MS |
170 | if (!req) |
171 | return -EINTR; | |
172 | ||
173 | memset(&inarg, 0, sizeof(inarg)); | |
174 | inarg.fh = ff->fh; | |
175 | req->in.h.opcode = FUSE_FLUSH; | |
176 | req->in.h.nodeid = get_node_id(inode); | |
177 | req->inode = inode; | |
178 | req->file = file; | |
179 | req->in.numargs = 1; | |
180 | req->in.args[0].size = sizeof(inarg); | |
181 | req->in.args[0].value = &inarg; | |
7c352bdf | 182 | request_send(fc, req); |
b6aeaded MS |
183 | err = req->out.h.error; |
184 | fuse_put_request(fc, req); | |
185 | if (err == -ENOSYS) { | |
186 | fc->no_flush = 1; | |
187 | err = 0; | |
188 | } | |
189 | return err; | |
190 | } | |
191 | ||
82547981 MS |
192 | int fuse_fsync_common(struct file *file, struct dentry *de, int datasync, |
193 | int isdir) | |
b6aeaded MS |
194 | { |
195 | struct inode *inode = de->d_inode; | |
196 | struct fuse_conn *fc = get_fuse_conn(inode); | |
197 | struct fuse_file *ff = file->private_data; | |
198 | struct fuse_req *req; | |
199 | struct fuse_fsync_in inarg; | |
200 | int err; | |
201 | ||
82547981 | 202 | if ((!isdir && fc->no_fsync) || (isdir && fc->no_fsyncdir)) |
b6aeaded MS |
203 | return 0; |
204 | ||
205 | req = fuse_get_request(fc); | |
206 | if (!req) | |
7c352bdf | 207 | return -EINTR; |
b6aeaded MS |
208 | |
209 | memset(&inarg, 0, sizeof(inarg)); | |
210 | inarg.fh = ff->fh; | |
211 | inarg.fsync_flags = datasync ? 1 : 0; | |
82547981 | 212 | req->in.h.opcode = isdir ? FUSE_FSYNCDIR : FUSE_FSYNC; |
b6aeaded MS |
213 | req->in.h.nodeid = get_node_id(inode); |
214 | req->inode = inode; | |
215 | req->file = file; | |
216 | req->in.numargs = 1; | |
217 | req->in.args[0].size = sizeof(inarg); | |
218 | req->in.args[0].value = &inarg; | |
219 | request_send(fc, req); | |
220 | err = req->out.h.error; | |
221 | fuse_put_request(fc, req); | |
222 | if (err == -ENOSYS) { | |
82547981 MS |
223 | if (isdir) |
224 | fc->no_fsyncdir = 1; | |
225 | else | |
226 | fc->no_fsync = 1; | |
b6aeaded MS |
227 | err = 0; |
228 | } | |
229 | return err; | |
230 | } | |
231 | ||
82547981 MS |
232 | static int fuse_fsync(struct file *file, struct dentry *de, int datasync) |
233 | { | |
234 | return fuse_fsync_common(file, de, datasync, 0); | |
235 | } | |
236 | ||
04730fef MS |
237 | size_t fuse_send_read_common(struct fuse_req *req, struct file *file, |
238 | struct inode *inode, loff_t pos, size_t count, | |
239 | int isdir) | |
b6aeaded MS |
240 | { |
241 | struct fuse_conn *fc = get_fuse_conn(inode); | |
242 | struct fuse_file *ff = file->private_data; | |
243 | struct fuse_read_in inarg; | |
244 | ||
245 | memset(&inarg, 0, sizeof(struct fuse_read_in)); | |
246 | inarg.fh = ff->fh; | |
247 | inarg.offset = pos; | |
248 | inarg.size = count; | |
04730fef | 249 | req->in.h.opcode = isdir ? FUSE_READDIR : FUSE_READ; |
b6aeaded MS |
250 | req->in.h.nodeid = get_node_id(inode); |
251 | req->inode = inode; | |
252 | req->file = file; | |
253 | req->in.numargs = 1; | |
254 | req->in.args[0].size = sizeof(struct fuse_read_in); | |
255 | req->in.args[0].value = &inarg; | |
256 | req->out.argpages = 1; | |
257 | req->out.argvar = 1; | |
258 | req->out.numargs = 1; | |
259 | req->out.args[0].size = count; | |
7c352bdf | 260 | request_send(fc, req); |
b6aeaded MS |
261 | return req->out.args[0].size; |
262 | } | |
263 | ||
04730fef MS |
264 | static inline size_t fuse_send_read(struct fuse_req *req, struct file *file, |
265 | struct inode *inode, loff_t pos, | |
266 | size_t count) | |
267 | { | |
268 | return fuse_send_read_common(req, file, inode, pos, count, 0); | |
269 | } | |
270 | ||
b6aeaded MS |
271 | static int fuse_readpage(struct file *file, struct page *page) |
272 | { | |
273 | struct inode *inode = page->mapping->host; | |
274 | struct fuse_conn *fc = get_fuse_conn(inode); | |
275 | loff_t pos = (loff_t) page->index << PAGE_CACHE_SHIFT; | |
7c352bdf | 276 | struct fuse_req *req = fuse_get_request(fc); |
b6aeaded MS |
277 | int err = -EINTR; |
278 | if (!req) | |
279 | goto out; | |
280 | ||
281 | req->out.page_zeroing = 1; | |
282 | req->num_pages = 1; | |
283 | req->pages[0] = page; | |
284 | fuse_send_read(req, file, inode, pos, PAGE_CACHE_SIZE); | |
285 | err = req->out.h.error; | |
286 | fuse_put_request(fc, req); | |
287 | if (!err) | |
288 | SetPageUptodate(page); | |
b36c31ba | 289 | fuse_invalidate_attr(inode); /* atime changed */ |
b6aeaded MS |
290 | out: |
291 | unlock_page(page); | |
292 | return err; | |
293 | } | |
294 | ||
db50b96c MS |
295 | static int fuse_send_readpages(struct fuse_req *req, struct file *file, |
296 | struct inode *inode) | |
297 | { | |
298 | loff_t pos = (loff_t) req->pages[0]->index << PAGE_CACHE_SHIFT; | |
299 | size_t count = req->num_pages << PAGE_CACHE_SHIFT; | |
300 | unsigned i; | |
301 | req->out.page_zeroing = 1; | |
302 | fuse_send_read(req, file, inode, pos, count); | |
303 | for (i = 0; i < req->num_pages; i++) { | |
304 | struct page *page = req->pages[i]; | |
305 | if (!req->out.h.error) | |
306 | SetPageUptodate(page); | |
307 | unlock_page(page); | |
308 | } | |
309 | return req->out.h.error; | |
310 | } | |
311 | ||
312 | struct fuse_readpages_data { | |
313 | struct fuse_req *req; | |
314 | struct file *file; | |
315 | struct inode *inode; | |
316 | }; | |
317 | ||
318 | static int fuse_readpages_fill(void *_data, struct page *page) | |
319 | { | |
320 | struct fuse_readpages_data *data = _data; | |
321 | struct fuse_req *req = data->req; | |
322 | struct inode *inode = data->inode; | |
323 | struct fuse_conn *fc = get_fuse_conn(inode); | |
324 | ||
325 | if (req->num_pages && | |
326 | (req->num_pages == FUSE_MAX_PAGES_PER_REQ || | |
327 | (req->num_pages + 1) * PAGE_CACHE_SIZE > fc->max_read || | |
328 | req->pages[req->num_pages - 1]->index + 1 != page->index)) { | |
329 | int err = fuse_send_readpages(req, data->file, inode); | |
330 | if (err) { | |
331 | unlock_page(page); | |
332 | return err; | |
333 | } | |
334 | fuse_reset_request(req); | |
335 | } | |
336 | req->pages[req->num_pages] = page; | |
337 | req->num_pages ++; | |
338 | return 0; | |
339 | } | |
340 | ||
341 | static int fuse_readpages(struct file *file, struct address_space *mapping, | |
342 | struct list_head *pages, unsigned nr_pages) | |
343 | { | |
344 | struct inode *inode = mapping->host; | |
345 | struct fuse_conn *fc = get_fuse_conn(inode); | |
346 | struct fuse_readpages_data data; | |
347 | int err; | |
348 | data.file = file; | |
349 | data.inode = inode; | |
7c352bdf | 350 | data.req = fuse_get_request(fc); |
db50b96c MS |
351 | if (!data.req) |
352 | return -EINTR; | |
353 | ||
354 | err = read_cache_pages(mapping, pages, fuse_readpages_fill, &data); | |
355 | if (!err && data.req->num_pages) | |
356 | err = fuse_send_readpages(data.req, file, inode); | |
357 | fuse_put_request(fc, data.req); | |
b36c31ba | 358 | fuse_invalidate_attr(inode); /* atime changed */ |
db50b96c MS |
359 | return err; |
360 | } | |
361 | ||
04730fef MS |
362 | static size_t fuse_send_write(struct fuse_req *req, struct file *file, |
363 | struct inode *inode, loff_t pos, size_t count) | |
b6aeaded MS |
364 | { |
365 | struct fuse_conn *fc = get_fuse_conn(inode); | |
366 | struct fuse_file *ff = file->private_data; | |
367 | struct fuse_write_in inarg; | |
368 | struct fuse_write_out outarg; | |
369 | ||
370 | memset(&inarg, 0, sizeof(struct fuse_write_in)); | |
371 | inarg.fh = ff->fh; | |
372 | inarg.offset = pos; | |
373 | inarg.size = count; | |
374 | req->in.h.opcode = FUSE_WRITE; | |
375 | req->in.h.nodeid = get_node_id(inode); | |
376 | req->inode = inode; | |
377 | req->file = file; | |
378 | req->in.argpages = 1; | |
379 | req->in.numargs = 2; | |
380 | req->in.args[0].size = sizeof(struct fuse_write_in); | |
381 | req->in.args[0].value = &inarg; | |
382 | req->in.args[1].size = count; | |
383 | req->out.numargs = 1; | |
384 | req->out.args[0].size = sizeof(struct fuse_write_out); | |
385 | req->out.args[0].value = &outarg; | |
7c352bdf | 386 | request_send(fc, req); |
b6aeaded MS |
387 | return outarg.size; |
388 | } | |
389 | ||
390 | static int fuse_prepare_write(struct file *file, struct page *page, | |
391 | unsigned offset, unsigned to) | |
392 | { | |
393 | /* No op */ | |
394 | return 0; | |
395 | } | |
396 | ||
397 | static int fuse_commit_write(struct file *file, struct page *page, | |
398 | unsigned offset, unsigned to) | |
399 | { | |
400 | int err; | |
04730fef | 401 | size_t nres; |
b6aeaded MS |
402 | unsigned count = to - offset; |
403 | struct inode *inode = page->mapping->host; | |
404 | struct fuse_conn *fc = get_fuse_conn(inode); | |
405 | loff_t pos = ((loff_t) page->index << PAGE_CACHE_SHIFT) + offset; | |
7c352bdf | 406 | struct fuse_req *req = fuse_get_request(fc); |
b6aeaded MS |
407 | if (!req) |
408 | return -EINTR; | |
409 | ||
410 | req->num_pages = 1; | |
411 | req->pages[0] = page; | |
412 | req->page_offset = offset; | |
413 | nres = fuse_send_write(req, file, inode, pos, count); | |
414 | err = req->out.h.error; | |
415 | fuse_put_request(fc, req); | |
416 | if (!err && nres != count) | |
417 | err = -EIO; | |
418 | if (!err) { | |
419 | pos += count; | |
420 | if (pos > i_size_read(inode)) | |
421 | i_size_write(inode, pos); | |
422 | ||
423 | if (offset == 0 && to == PAGE_CACHE_SIZE) { | |
424 | clear_page_dirty(page); | |
425 | SetPageUptodate(page); | |
426 | } | |
b36c31ba MS |
427 | } |
428 | fuse_invalidate_attr(inode); | |
b6aeaded MS |
429 | return err; |
430 | } | |
431 | ||
413ef8cb MS |
432 | static void fuse_release_user_pages(struct fuse_req *req, int write) |
433 | { | |
434 | unsigned i; | |
435 | ||
436 | for (i = 0; i < req->num_pages; i++) { | |
437 | struct page *page = req->pages[i]; | |
438 | if (write) | |
439 | set_page_dirty_lock(page); | |
440 | put_page(page); | |
441 | } | |
442 | } | |
443 | ||
444 | static int fuse_get_user_pages(struct fuse_req *req, const char __user *buf, | |
445 | unsigned nbytes, int write) | |
446 | { | |
447 | unsigned long user_addr = (unsigned long) buf; | |
448 | unsigned offset = user_addr & ~PAGE_MASK; | |
449 | int npages; | |
450 | ||
451 | /* This doesn't work with nfsd */ | |
452 | if (!current->mm) | |
453 | return -EPERM; | |
454 | ||
455 | nbytes = min(nbytes, (unsigned) FUSE_MAX_PAGES_PER_REQ << PAGE_SHIFT); | |
456 | npages = (nbytes + offset + PAGE_SIZE - 1) >> PAGE_SHIFT; | |
457 | npages = min(npages, FUSE_MAX_PAGES_PER_REQ); | |
458 | down_read(¤t->mm->mmap_sem); | |
459 | npages = get_user_pages(current, current->mm, user_addr, npages, write, | |
460 | 0, req->pages, NULL); | |
461 | up_read(¤t->mm->mmap_sem); | |
462 | if (npages < 0) | |
463 | return npages; | |
464 | ||
465 | req->num_pages = npages; | |
466 | req->page_offset = offset; | |
467 | return 0; | |
468 | } | |
469 | ||
470 | static ssize_t fuse_direct_io(struct file *file, const char __user *buf, | |
471 | size_t count, loff_t *ppos, int write) | |
472 | { | |
473 | struct inode *inode = file->f_dentry->d_inode; | |
474 | struct fuse_conn *fc = get_fuse_conn(inode); | |
475 | size_t nmax = write ? fc->max_write : fc->max_read; | |
476 | loff_t pos = *ppos; | |
477 | ssize_t res = 0; | |
478 | struct fuse_req *req = fuse_get_request(fc); | |
479 | if (!req) | |
7c352bdf | 480 | return -EINTR; |
413ef8cb MS |
481 | |
482 | while (count) { | |
483 | size_t tmp; | |
484 | size_t nres; | |
485 | size_t nbytes = min(count, nmax); | |
486 | int err = fuse_get_user_pages(req, buf, nbytes, !write); | |
487 | if (err) { | |
488 | res = err; | |
489 | break; | |
490 | } | |
491 | tmp = (req->num_pages << PAGE_SHIFT) - req->page_offset; | |
492 | nbytes = min(nbytes, tmp); | |
493 | if (write) | |
494 | nres = fuse_send_write(req, file, inode, pos, nbytes); | |
495 | else | |
496 | nres = fuse_send_read(req, file, inode, pos, nbytes); | |
497 | fuse_release_user_pages(req, !write); | |
498 | if (req->out.h.error) { | |
499 | if (!res) | |
500 | res = req->out.h.error; | |
501 | break; | |
502 | } else if (nres > nbytes) { | |
503 | res = -EIO; | |
504 | break; | |
505 | } | |
506 | count -= nres; | |
507 | res += nres; | |
508 | pos += nres; | |
509 | buf += nres; | |
510 | if (nres != nbytes) | |
511 | break; | |
512 | if (count) | |
513 | fuse_reset_request(req); | |
514 | } | |
515 | fuse_put_request(fc, req); | |
516 | if (res > 0) { | |
517 | if (write && pos > i_size_read(inode)) | |
518 | i_size_write(inode, pos); | |
519 | *ppos = pos; | |
b36c31ba MS |
520 | } |
521 | fuse_invalidate_attr(inode); | |
413ef8cb MS |
522 | |
523 | return res; | |
524 | } | |
525 | ||
526 | static ssize_t fuse_direct_read(struct file *file, char __user *buf, | |
527 | size_t count, loff_t *ppos) | |
528 | { | |
529 | return fuse_direct_io(file, buf, count, ppos, 0); | |
530 | } | |
531 | ||
532 | static ssize_t fuse_direct_write(struct file *file, const char __user *buf, | |
533 | size_t count, loff_t *ppos) | |
534 | { | |
535 | struct inode *inode = file->f_dentry->d_inode; | |
536 | ssize_t res; | |
537 | /* Don't allow parallel writes to the same file */ | |
538 | down(&inode->i_sem); | |
539 | res = fuse_direct_io(file, buf, count, ppos, 1); | |
540 | up(&inode->i_sem); | |
541 | return res; | |
542 | } | |
543 | ||
b6aeaded MS |
544 | static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma) |
545 | { | |
546 | if ((vma->vm_flags & VM_SHARED)) { | |
547 | if ((vma->vm_flags & VM_WRITE)) | |
548 | return -ENODEV; | |
549 | else | |
550 | vma->vm_flags &= ~VM_MAYWRITE; | |
551 | } | |
552 | return generic_file_mmap(file, vma); | |
553 | } | |
554 | ||
555 | static int fuse_set_page_dirty(struct page *page) | |
556 | { | |
557 | printk("fuse_set_page_dirty: should not happen\n"); | |
558 | dump_stack(); | |
559 | return 0; | |
560 | } | |
561 | ||
562 | static struct file_operations fuse_file_operations = { | |
563 | .llseek = generic_file_llseek, | |
564 | .read = generic_file_read, | |
565 | .write = generic_file_write, | |
566 | .mmap = fuse_file_mmap, | |
567 | .open = fuse_open, | |
568 | .flush = fuse_flush, | |
569 | .release = fuse_release, | |
570 | .fsync = fuse_fsync, | |
571 | .sendfile = generic_file_sendfile, | |
572 | }; | |
573 | ||
413ef8cb MS |
574 | static struct file_operations fuse_direct_io_file_operations = { |
575 | .llseek = generic_file_llseek, | |
576 | .read = fuse_direct_read, | |
577 | .write = fuse_direct_write, | |
578 | .open = fuse_open, | |
579 | .flush = fuse_flush, | |
580 | .release = fuse_release, | |
581 | .fsync = fuse_fsync, | |
582 | /* no mmap and sendfile */ | |
583 | }; | |
584 | ||
b6aeaded MS |
585 | static struct address_space_operations fuse_file_aops = { |
586 | .readpage = fuse_readpage, | |
587 | .prepare_write = fuse_prepare_write, | |
588 | .commit_write = fuse_commit_write, | |
db50b96c | 589 | .readpages = fuse_readpages, |
b6aeaded MS |
590 | .set_page_dirty = fuse_set_page_dirty, |
591 | }; | |
592 | ||
593 | void fuse_init_file_inode(struct inode *inode) | |
594 | { | |
45323fb7 MS |
595 | inode->i_fop = &fuse_file_operations; |
596 | inode->i_data.a_ops = &fuse_file_aops; | |
b6aeaded | 597 | } |