Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/proc.c | |
3 | * | |
4 | * Copyright (C) 1992, 1993, 1994 Rick Sladkey | |
5 | * | |
6 | * OS-independent nfs remote procedure call functions | |
7 | * | |
8 | * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers | |
9 | * so at last we can have decent(ish) throughput off a | |
10 | * Sun server. | |
11 | * | |
12 | * Coding optimized and cleaned up by Florian La Roche. | |
13 | * Note: Error returns are optimized for NFS_OK, which isn't translated via | |
14 | * nfs_stat_to_errno(), but happens to be already the right return code. | |
15 | * | |
16 | * Also, the code currently doesn't check the size of the packet, when | |
17 | * it decodes the packet. | |
18 | * | |
19 | * Feel free to fix it and mail me the diffs if it worries you. | |
20 | * | |
21 | * Completely rewritten to support the new RPC call interface; | |
22 | * rewrote and moved the entire XDR stuff to xdr.c | |
23 | * --Olaf Kirch June 1996 | |
24 | * | |
25 | * The code below initializes all auto variables explicitly, otherwise | |
26 | * it will fail to work as a module (gcc generates a memset call for an | |
27 | * incomplete struct). | |
28 | */ | |
29 | ||
30 | #include <linux/types.h> | |
31 | #include <linux/param.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/time.h> | |
34 | #include <linux/mm.h> | |
35 | #include <linux/utsname.h> | |
36 | #include <linux/errno.h> | |
37 | #include <linux/string.h> | |
38 | #include <linux/in.h> | |
39 | #include <linux/pagemap.h> | |
40 | #include <linux/sunrpc/clnt.h> | |
41 | #include <linux/nfs.h> | |
42 | #include <linux/nfs2.h> | |
43 | #include <linux/nfs_fs.h> | |
44 | #include <linux/nfs_page.h> | |
45 | #include <linux/lockd/bind.h> | |
46 | #include <linux/smp_lock.h> | |
47 | ||
48 | #define NFSDBG_FACILITY NFSDBG_PROC | |
49 | ||
50 | extern struct rpc_procinfo nfs_procedures[]; | |
51 | ||
52 | /* | |
53 | * Bare-bones access to getattr: this is for nfs_read_super. | |
54 | */ | |
55 | static int | |
56 | nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
57 | struct nfs_fsinfo *info) | |
58 | { | |
59 | struct nfs_fattr *fattr = info->fattr; | |
60 | struct nfs2_fsstat fsinfo; | |
61 | int status; | |
62 | ||
63 | dprintk("%s: call getattr\n", __FUNCTION__); | |
64 | fattr->valid = 0; | |
65 | status = rpc_call(server->client_sys, NFSPROC_GETATTR, fhandle, fattr, 0); | |
66 | dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); | |
67 | if (status) | |
68 | return status; | |
69 | dprintk("%s: call statfs\n", __FUNCTION__); | |
70 | status = rpc_call(server->client_sys, NFSPROC_STATFS, fhandle, &fsinfo, 0); | |
71 | dprintk("%s: reply statfs: %d\n", __FUNCTION__, status); | |
72 | if (status) | |
73 | return status; | |
74 | info->rtmax = NFS_MAXDATA; | |
75 | info->rtpref = fsinfo.tsize; | |
76 | info->rtmult = fsinfo.bsize; | |
77 | info->wtmax = NFS_MAXDATA; | |
78 | info->wtpref = fsinfo.tsize; | |
79 | info->wtmult = fsinfo.bsize; | |
80 | info->dtpref = fsinfo.tsize; | |
81 | info->maxfilesize = 0x7FFFFFFF; | |
82 | info->lease_time = 0; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | /* | |
87 | * One function for each procedure in the NFS protocol. | |
88 | */ | |
89 | static int | |
90 | nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | |
91 | struct nfs_fattr *fattr) | |
92 | { | |
93 | int status; | |
94 | ||
95 | dprintk("NFS call getattr\n"); | |
96 | fattr->valid = 0; | |
97 | status = rpc_call(server->client, NFSPROC_GETATTR, | |
98 | fhandle, fattr, 0); | |
99 | dprintk("NFS reply getattr: %d\n", status); | |
100 | return status; | |
101 | } | |
102 | ||
103 | static int | |
104 | nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
105 | struct iattr *sattr) | |
106 | { | |
107 | struct inode *inode = dentry->d_inode; | |
108 | struct nfs_sattrargs arg = { | |
109 | .fh = NFS_FH(inode), | |
110 | .sattr = sattr | |
111 | }; | |
112 | int status; | |
113 | ||
114 | dprintk("NFS call setattr\n"); | |
115 | fattr->valid = 0; | |
116 | status = rpc_call(NFS_CLIENT(inode), NFSPROC_SETATTR, &arg, fattr, 0); | |
117 | dprintk("NFS reply setattr: %d\n", status); | |
118 | return status; | |
119 | } | |
120 | ||
121 | static int | |
122 | nfs_proc_lookup(struct inode *dir, struct qstr *name, | |
123 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
124 | { | |
125 | struct nfs_diropargs arg = { | |
126 | .fh = NFS_FH(dir), | |
127 | .name = name->name, | |
128 | .len = name->len | |
129 | }; | |
130 | struct nfs_diropok res = { | |
131 | .fh = fhandle, | |
132 | .fattr = fattr | |
133 | }; | |
134 | int status; | |
135 | ||
136 | dprintk("NFS call lookup %s\n", name->name); | |
137 | fattr->valid = 0; | |
138 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_LOOKUP, &arg, &res, 0); | |
139 | dprintk("NFS reply lookup: %d\n", status); | |
140 | return status; | |
141 | } | |
142 | ||
143 | static int nfs_proc_readlink(struct inode *inode, struct page *page, | |
144 | unsigned int pgbase, unsigned int pglen) | |
145 | { | |
146 | struct nfs_readlinkargs args = { | |
147 | .fh = NFS_FH(inode), | |
148 | .pgbase = pgbase, | |
149 | .pglen = pglen, | |
150 | .pages = &page | |
151 | }; | |
152 | int status; | |
153 | ||
154 | dprintk("NFS call readlink\n"); | |
155 | status = rpc_call(NFS_CLIENT(inode), NFSPROC_READLINK, &args, NULL, 0); | |
156 | dprintk("NFS reply readlink: %d\n", status); | |
157 | return status; | |
158 | } | |
159 | ||
160 | static int nfs_proc_read(struct nfs_read_data *rdata) | |
161 | { | |
162 | int flags = rdata->flags; | |
163 | struct inode * inode = rdata->inode; | |
164 | struct nfs_fattr * fattr = rdata->res.fattr; | |
165 | struct rpc_message msg = { | |
166 | .rpc_proc = &nfs_procedures[NFSPROC_READ], | |
167 | .rpc_argp = &rdata->args, | |
168 | .rpc_resp = &rdata->res, | |
169 | .rpc_cred = rdata->cred, | |
170 | }; | |
171 | int status; | |
172 | ||
173 | dprintk("NFS call read %d @ %Ld\n", rdata->args.count, | |
174 | (long long) rdata->args.offset); | |
175 | fattr->valid = 0; | |
176 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); | |
177 | if (status >= 0) { | |
178 | nfs_refresh_inode(inode, fattr); | |
179 | /* Emulate the eof flag, which isn't normally needed in NFSv2 | |
180 | * as it is guaranteed to always return the file attributes | |
181 | */ | |
182 | if (rdata->args.offset + rdata->args.count >= fattr->size) | |
183 | rdata->res.eof = 1; | |
184 | } | |
185 | dprintk("NFS reply read: %d\n", status); | |
186 | return status; | |
187 | } | |
188 | ||
189 | static int nfs_proc_write(struct nfs_write_data *wdata) | |
190 | { | |
191 | int flags = wdata->flags; | |
192 | struct inode * inode = wdata->inode; | |
193 | struct nfs_fattr * fattr = wdata->res.fattr; | |
194 | struct rpc_message msg = { | |
195 | .rpc_proc = &nfs_procedures[NFSPROC_WRITE], | |
196 | .rpc_argp = &wdata->args, | |
197 | .rpc_resp = &wdata->res, | |
198 | .rpc_cred = wdata->cred, | |
199 | }; | |
200 | int status; | |
201 | ||
202 | dprintk("NFS call write %d @ %Ld\n", wdata->args.count, | |
203 | (long long) wdata->args.offset); | |
204 | fattr->valid = 0; | |
205 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); | |
206 | if (status >= 0) { | |
207 | nfs_refresh_inode(inode, fattr); | |
208 | wdata->res.count = wdata->args.count; | |
209 | wdata->verf.committed = NFS_FILE_SYNC; | |
210 | } | |
211 | dprintk("NFS reply write: %d\n", status); | |
212 | return status < 0? status : wdata->res.count; | |
213 | } | |
214 | ||
215 | static int | |
216 | nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
217 | int flags) | |
218 | { | |
219 | struct nfs_fh fhandle; | |
220 | struct nfs_fattr fattr; | |
221 | struct nfs_createargs arg = { | |
222 | .fh = NFS_FH(dir), | |
223 | .name = dentry->d_name.name, | |
224 | .len = dentry->d_name.len, | |
225 | .sattr = sattr | |
226 | }; | |
227 | struct nfs_diropok res = { | |
228 | .fh = &fhandle, | |
229 | .fattr = &fattr | |
230 | }; | |
231 | int status; | |
232 | ||
233 | fattr.valid = 0; | |
234 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
235 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0); | |
236 | if (status == 0) | |
237 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
238 | dprintk("NFS reply create: %d\n", status); | |
239 | return status; | |
240 | } | |
241 | ||
242 | /* | |
243 | * In NFSv2, mknod is grafted onto the create call. | |
244 | */ | |
245 | static int | |
246 | nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
247 | dev_t rdev) | |
248 | { | |
249 | struct nfs_fh fhandle; | |
250 | struct nfs_fattr fattr; | |
251 | struct nfs_createargs arg = { | |
252 | .fh = NFS_FH(dir), | |
253 | .name = dentry->d_name.name, | |
254 | .len = dentry->d_name.len, | |
255 | .sattr = sattr | |
256 | }; | |
257 | struct nfs_diropok res = { | |
258 | .fh = &fhandle, | |
259 | .fattr = &fattr | |
260 | }; | |
261 | int status, mode; | |
262 | ||
263 | dprintk("NFS call mknod %s\n", dentry->d_name.name); | |
264 | ||
265 | mode = sattr->ia_mode; | |
266 | if (S_ISFIFO(mode)) { | |
267 | sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR; | |
268 | sattr->ia_valid &= ~ATTR_SIZE; | |
269 | } else if (S_ISCHR(mode) || S_ISBLK(mode)) { | |
270 | sattr->ia_valid |= ATTR_SIZE; | |
271 | sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */ | |
272 | } | |
273 | ||
274 | fattr.valid = 0; | |
275 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0); | |
276 | ||
277 | if (status == -EINVAL && S_ISFIFO(mode)) { | |
278 | sattr->ia_mode = mode; | |
279 | fattr.valid = 0; | |
280 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0); | |
281 | } | |
282 | if (status == 0) | |
283 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
284 | dprintk("NFS reply mknod: %d\n", status); | |
285 | return status; | |
286 | } | |
287 | ||
288 | static int | |
289 | nfs_proc_remove(struct inode *dir, struct qstr *name) | |
290 | { | |
291 | struct nfs_diropargs arg = { | |
292 | .fh = NFS_FH(dir), | |
293 | .name = name->name, | |
294 | .len = name->len | |
295 | }; | |
296 | struct rpc_message msg = { | |
297 | .rpc_proc = &nfs_procedures[NFSPROC_REMOVE], | |
298 | .rpc_argp = &arg, | |
299 | .rpc_resp = NULL, | |
300 | .rpc_cred = NULL | |
301 | }; | |
302 | int status; | |
303 | ||
304 | dprintk("NFS call remove %s\n", name->name); | |
305 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
306 | ||
307 | dprintk("NFS reply remove: %d\n", status); | |
308 | return status; | |
309 | } | |
310 | ||
311 | static int | |
312 | nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name) | |
313 | { | |
314 | struct nfs_diropargs *arg; | |
315 | ||
316 | arg = (struct nfs_diropargs *)kmalloc(sizeof(*arg), GFP_KERNEL); | |
317 | if (!arg) | |
318 | return -ENOMEM; | |
319 | arg->fh = NFS_FH(dir->d_inode); | |
320 | arg->name = name->name; | |
321 | arg->len = name->len; | |
322 | msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; | |
323 | msg->rpc_argp = arg; | |
324 | return 0; | |
325 | } | |
326 | ||
327 | static int | |
328 | nfs_proc_unlink_done(struct dentry *dir, struct rpc_task *task) | |
329 | { | |
330 | struct rpc_message *msg = &task->tk_msg; | |
331 | ||
332 | if (msg->rpc_argp) | |
333 | kfree(msg->rpc_argp); | |
334 | return 0; | |
335 | } | |
336 | ||
337 | static int | |
338 | nfs_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
339 | struct inode *new_dir, struct qstr *new_name) | |
340 | { | |
341 | struct nfs_renameargs arg = { | |
342 | .fromfh = NFS_FH(old_dir), | |
343 | .fromname = old_name->name, | |
344 | .fromlen = old_name->len, | |
345 | .tofh = NFS_FH(new_dir), | |
346 | .toname = new_name->name, | |
347 | .tolen = new_name->len | |
348 | }; | |
349 | int status; | |
350 | ||
351 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
352 | status = rpc_call(NFS_CLIENT(old_dir), NFSPROC_RENAME, &arg, NULL, 0); | |
353 | dprintk("NFS reply rename: %d\n", status); | |
354 | return status; | |
355 | } | |
356 | ||
357 | static int | |
358 | nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
359 | { | |
360 | struct nfs_linkargs arg = { | |
361 | .fromfh = NFS_FH(inode), | |
362 | .tofh = NFS_FH(dir), | |
363 | .toname = name->name, | |
364 | .tolen = name->len | |
365 | }; | |
366 | int status; | |
367 | ||
368 | dprintk("NFS call link %s\n", name->name); | |
369 | status = rpc_call(NFS_CLIENT(inode), NFSPROC_LINK, &arg, NULL, 0); | |
370 | dprintk("NFS reply link: %d\n", status); | |
371 | return status; | |
372 | } | |
373 | ||
374 | static int | |
375 | nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path, | |
376 | struct iattr *sattr, struct nfs_fh *fhandle, | |
377 | struct nfs_fattr *fattr) | |
378 | { | |
379 | struct nfs_symlinkargs arg = { | |
380 | .fromfh = NFS_FH(dir), | |
381 | .fromname = name->name, | |
382 | .fromlen = name->len, | |
383 | .topath = path->name, | |
384 | .tolen = path->len, | |
385 | .sattr = sattr | |
386 | }; | |
387 | int status; | |
388 | ||
389 | if (path->len > NFS2_MAXPATHLEN) | |
390 | return -ENAMETOOLONG; | |
391 | dprintk("NFS call symlink %s -> %s\n", name->name, path->name); | |
392 | fattr->valid = 0; | |
393 | fhandle->size = 0; | |
394 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_SYMLINK, &arg, NULL, 0); | |
395 | dprintk("NFS reply symlink: %d\n", status); | |
396 | return status; | |
397 | } | |
398 | ||
399 | static int | |
400 | nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
401 | { | |
402 | struct nfs_fh fhandle; | |
403 | struct nfs_fattr fattr; | |
404 | struct nfs_createargs arg = { | |
405 | .fh = NFS_FH(dir), | |
406 | .name = dentry->d_name.name, | |
407 | .len = dentry->d_name.len, | |
408 | .sattr = sattr | |
409 | }; | |
410 | struct nfs_diropok res = { | |
411 | .fh = &fhandle, | |
412 | .fattr = &fattr | |
413 | }; | |
414 | int status; | |
415 | ||
416 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
417 | fattr.valid = 0; | |
418 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_MKDIR, &arg, &res, 0); | |
419 | if (status == 0) | |
420 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
421 | dprintk("NFS reply mkdir: %d\n", status); | |
422 | return status; | |
423 | } | |
424 | ||
425 | static int | |
426 | nfs_proc_rmdir(struct inode *dir, struct qstr *name) | |
427 | { | |
428 | struct nfs_diropargs arg = { | |
429 | .fh = NFS_FH(dir), | |
430 | .name = name->name, | |
431 | .len = name->len | |
432 | }; | |
433 | int status; | |
434 | ||
435 | dprintk("NFS call rmdir %s\n", name->name); | |
436 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_RMDIR, &arg, NULL, 0); | |
437 | dprintk("NFS reply rmdir: %d\n", status); | |
438 | return status; | |
439 | } | |
440 | ||
441 | /* | |
442 | * The READDIR implementation is somewhat hackish - we pass a temporary | |
443 | * buffer to the encode function, which installs it in the receive | |
444 | * the receive iovec. The decode function just parses the reply to make | |
445 | * sure it is syntactically correct; the entries itself are decoded | |
446 | * from nfs_readdir by calling the decode_entry function directly. | |
447 | */ | |
448 | static int | |
449 | nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
450 | u64 cookie, struct page *page, unsigned int count, int plus) | |
451 | { | |
452 | struct inode *dir = dentry->d_inode; | |
453 | struct nfs_readdirargs arg = { | |
454 | .fh = NFS_FH(dir), | |
455 | .cookie = cookie, | |
456 | .count = count, | |
457 | .pages = &page | |
458 | }; | |
459 | struct rpc_message msg = { | |
460 | .rpc_proc = &nfs_procedures[NFSPROC_READDIR], | |
461 | .rpc_argp = &arg, | |
462 | .rpc_resp = NULL, | |
463 | .rpc_cred = cred | |
464 | }; | |
465 | int status; | |
466 | ||
467 | lock_kernel(); | |
468 | ||
469 | dprintk("NFS call readdir %d\n", (unsigned int)cookie); | |
470 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
471 | ||
472 | dprintk("NFS reply readdir: %d\n", status); | |
473 | unlock_kernel(); | |
474 | return status; | |
475 | } | |
476 | ||
477 | static int | |
478 | nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
479 | struct nfs_fsstat *stat) | |
480 | { | |
481 | struct nfs2_fsstat fsinfo; | |
482 | int status; | |
483 | ||
484 | dprintk("NFS call statfs\n"); | |
485 | stat->fattr->valid = 0; | |
486 | status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0); | |
487 | dprintk("NFS reply statfs: %d\n", status); | |
488 | if (status) | |
489 | goto out; | |
490 | stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize; | |
491 | stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize; | |
492 | stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize; | |
493 | stat->tfiles = 0; | |
494 | stat->ffiles = 0; | |
495 | stat->afiles = 0; | |
496 | out: | |
497 | return status; | |
498 | } | |
499 | ||
500 | static int | |
501 | nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
502 | struct nfs_fsinfo *info) | |
503 | { | |
504 | struct nfs2_fsstat fsinfo; | |
505 | int status; | |
506 | ||
507 | dprintk("NFS call fsinfo\n"); | |
508 | info->fattr->valid = 0; | |
509 | status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0); | |
510 | dprintk("NFS reply fsinfo: %d\n", status); | |
511 | if (status) | |
512 | goto out; | |
513 | info->rtmax = NFS_MAXDATA; | |
514 | info->rtpref = fsinfo.tsize; | |
515 | info->rtmult = fsinfo.bsize; | |
516 | info->wtmax = NFS_MAXDATA; | |
517 | info->wtpref = fsinfo.tsize; | |
518 | info->wtmult = fsinfo.bsize; | |
519 | info->dtpref = fsinfo.tsize; | |
520 | info->maxfilesize = 0x7FFFFFFF; | |
521 | info->lease_time = 0; | |
522 | out: | |
523 | return status; | |
524 | } | |
525 | ||
526 | static int | |
527 | nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
528 | struct nfs_pathconf *info) | |
529 | { | |
530 | info->max_link = 0; | |
531 | info->max_namelen = NFS2_MAXNAMLEN; | |
532 | return 0; | |
533 | } | |
534 | ||
535 | extern u32 * nfs_decode_dirent(u32 *, struct nfs_entry *, int); | |
536 | ||
537 | static void | |
538 | nfs_read_done(struct rpc_task *task) | |
539 | { | |
540 | struct nfs_read_data *data = (struct nfs_read_data *) task->tk_calldata; | |
541 | ||
542 | if (task->tk_status >= 0) { | |
543 | nfs_refresh_inode(data->inode, data->res.fattr); | |
544 | /* Emulate the eof flag, which isn't normally needed in NFSv2 | |
545 | * as it is guaranteed to always return the file attributes | |
546 | */ | |
547 | if (data->args.offset + data->args.count >= data->res.fattr->size) | |
548 | data->res.eof = 1; | |
549 | } | |
550 | nfs_readpage_result(task); | |
551 | } | |
552 | ||
553 | static void | |
554 | nfs_proc_read_setup(struct nfs_read_data *data) | |
555 | { | |
556 | struct rpc_task *task = &data->task; | |
557 | struct inode *inode = data->inode; | |
558 | int flags; | |
559 | struct rpc_message msg = { | |
560 | .rpc_proc = &nfs_procedures[NFSPROC_READ], | |
561 | .rpc_argp = &data->args, | |
562 | .rpc_resp = &data->res, | |
563 | .rpc_cred = data->cred, | |
564 | }; | |
565 | ||
566 | /* N.B. Do we need to test? Never called for swapfile inode */ | |
567 | flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); | |
568 | ||
569 | /* Finalize the task. */ | |
570 | rpc_init_task(task, NFS_CLIENT(inode), nfs_read_done, flags); | |
571 | rpc_call_setup(task, &msg, 0); | |
572 | } | |
573 | ||
574 | static void | |
575 | nfs_write_done(struct rpc_task *task) | |
576 | { | |
577 | struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata; | |
578 | ||
579 | if (task->tk_status >= 0) | |
580 | nfs_refresh_inode(data->inode, data->res.fattr); | |
581 | nfs_writeback_done(task); | |
582 | } | |
583 | ||
584 | static void | |
585 | nfs_proc_write_setup(struct nfs_write_data *data, int how) | |
586 | { | |
587 | struct rpc_task *task = &data->task; | |
588 | struct inode *inode = data->inode; | |
589 | int flags; | |
590 | struct rpc_message msg = { | |
591 | .rpc_proc = &nfs_procedures[NFSPROC_WRITE], | |
592 | .rpc_argp = &data->args, | |
593 | .rpc_resp = &data->res, | |
594 | .rpc_cred = data->cred, | |
595 | }; | |
596 | ||
597 | /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ | |
598 | data->args.stable = NFS_FILE_SYNC; | |
599 | ||
600 | /* Set the initial flags for the task. */ | |
601 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | |
602 | ||
603 | /* Finalize the task. */ | |
604 | rpc_init_task(task, NFS_CLIENT(inode), nfs_write_done, flags); | |
605 | rpc_call_setup(task, &msg, 0); | |
606 | } | |
607 | ||
608 | static void | |
609 | nfs_proc_commit_setup(struct nfs_write_data *data, int how) | |
610 | { | |
611 | BUG(); | |
612 | } | |
613 | ||
614 | static int | |
615 | nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
616 | { | |
617 | return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl); | |
618 | } | |
619 | ||
620 | ||
621 | struct nfs_rpc_ops nfs_v2_clientops = { | |
622 | .version = 2, /* protocol version */ | |
623 | .dentry_ops = &nfs_dentry_operations, | |
624 | .dir_inode_ops = &nfs_dir_inode_operations, | |
92cfc62c | 625 | .file_inode_ops = &nfs_file_inode_operations, |
1da177e4 LT |
626 | .getroot = nfs_proc_get_root, |
627 | .getattr = nfs_proc_getattr, | |
628 | .setattr = nfs_proc_setattr, | |
629 | .lookup = nfs_proc_lookup, | |
630 | .access = NULL, /* access */ | |
631 | .readlink = nfs_proc_readlink, | |
632 | .read = nfs_proc_read, | |
633 | .write = nfs_proc_write, | |
634 | .commit = NULL, /* commit */ | |
635 | .create = nfs_proc_create, | |
636 | .remove = nfs_proc_remove, | |
637 | .unlink_setup = nfs_proc_unlink_setup, | |
638 | .unlink_done = nfs_proc_unlink_done, | |
639 | .rename = nfs_proc_rename, | |
640 | .link = nfs_proc_link, | |
641 | .symlink = nfs_proc_symlink, | |
642 | .mkdir = nfs_proc_mkdir, | |
643 | .rmdir = nfs_proc_rmdir, | |
644 | .readdir = nfs_proc_readdir, | |
645 | .mknod = nfs_proc_mknod, | |
646 | .statfs = nfs_proc_statfs, | |
647 | .fsinfo = nfs_proc_fsinfo, | |
648 | .pathconf = nfs_proc_pathconf, | |
649 | .decode_dirent = nfs_decode_dirent, | |
650 | .read_setup = nfs_proc_read_setup, | |
651 | .write_setup = nfs_proc_write_setup, | |
652 | .commit_setup = nfs_proc_commit_setup, | |
653 | .file_open = nfs_open, | |
654 | .file_release = nfs_release, | |
655 | .lock = nfs_proc_lock, | |
656 | }; |