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[AGPGART] Remove pointless assignment.
[linux-2.6/openmoko-kernel/knife-kernel.git] / fs / nfs / nfs3proc.c
blobacd8fe9762d3fc7abd6c626439dc6cb50105a0b7
1 /*
2 * linux/fs/nfs/nfs3proc.c
3 *
4 * Client-side NFSv3 procedures stubs.
5 *
6 * Copyright (C) 1997, Olaf Kirch
7 */
8
9 #include <linux/mm.h>
10 #include <linux/utsname.h>
11 #include <linux/errno.h>
12 #include <linux/string.h>
13 #include <linux/sunrpc/clnt.h>
14 #include <linux/nfs.h>
15 #include <linux/nfs3.h>
16 #include <linux/nfs_fs.h>
17 #include <linux/nfs_page.h>
18 #include <linux/lockd/bind.h>
19 #include <linux/smp_lock.h>
20 #include <linux/nfs_mount.h>
21
22 #include "iostat.h"
23 #include "internal.h"
24
25 #define NFSDBG_FACILITY NFSDBG_PROC
26
27 /* A wrapper to handle the EJUKEBOX error message */
28 static int
29 nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
30 {
31 sigset_t oldset;
32 int res;
33 rpc_clnt_sigmask(clnt, &oldset);
34 do {
35 res = rpc_call_sync(clnt, msg, flags);
36 if (res != -EJUKEBOX)
37 break;
38 schedule_timeout_interruptible(NFS_JUKEBOX_RETRY_TIME);
39 res = -ERESTARTSYS;
40 } while (!signalled());
41 rpc_clnt_sigunmask(clnt, &oldset);
42 return res;
43 }
44
45 #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
46
47 static int
48 nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
49 {
50 if (task->tk_status != -EJUKEBOX)
51 return 0;
52 nfs_inc_stats(inode, NFSIOS_DELAY);
53 task->tk_status = 0;
54 rpc_restart_call(task);
55 rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
56 return 1;
57 }
58
59 static int
60 do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
61 struct nfs_fsinfo *info)
62 {
63 struct rpc_message msg = {
64 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
65 .rpc_argp = fhandle,
66 .rpc_resp = info,
67 };
68 int status;
69
70 dprintk("%s: call fsinfo\n", __FUNCTION__);
71 nfs_fattr_init(info->fattr);
72 status = rpc_call_sync(client, &msg, 0);
73 dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status);
74 if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
75 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
76 msg.rpc_resp = info->fattr;
77 status = rpc_call_sync(client, &msg, 0);
78 dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
79 }
80 return status;
81 }
82
83 /*
84 * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
85 */
86 static int
87 nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
88 struct nfs_fsinfo *info)
89 {
90 int status;
91
92 status = do_proc_get_root(server->client, fhandle, info);
93 if (status && server->nfs_client->cl_rpcclient != server->client)
94 status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
95 return status;
96 }
97
98 /*
99 * One function for each procedure in the NFS protocol.
100 */
101 static int
102 nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
103 struct nfs_fattr *fattr)
104 {
105 struct rpc_message msg = {
106 .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
107 .rpc_argp = fhandle,
108 .rpc_resp = fattr,
109 };
110 int status;
111
112 dprintk("NFS call getattr\n");
113 nfs_fattr_init(fattr);
114 status = rpc_call_sync(server->client, &msg, 0);
115 dprintk("NFS reply getattr: %d\n", status);
116 return status;
117 }
118
119 static int
120 nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
121 struct iattr *sattr)
122 {
123 struct inode *inode = dentry->d_inode;
124 struct nfs3_sattrargs arg = {
125 .fh = NFS_FH(inode),
126 .sattr = sattr,
127 };
128 struct rpc_message msg = {
129 .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
130 .rpc_argp = &arg,
131 .rpc_resp = fattr,
132 };
133 int status;
134
135 dprintk("NFS call setattr\n");
136 nfs_fattr_init(fattr);
137 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
138 if (status == 0)
139 nfs_setattr_update_inode(inode, sattr);
140 dprintk("NFS reply setattr: %d\n", status);
141 return status;
142 }
143
144 static int
145 nfs3_proc_lookup(struct inode *dir, struct qstr *name,
146 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
147 {
148 struct nfs_fattr dir_attr;
149 struct nfs3_diropargs arg = {
150 .fh = NFS_FH(dir),
151 .name = name->name,
152 .len = name->len
153 };
154 struct nfs3_diropres res = {
155 .dir_attr = &dir_attr,
156 .fh = fhandle,
157 .fattr = fattr
158 };
159 struct rpc_message msg = {
160 .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
161 .rpc_argp = &arg,
162 .rpc_resp = &res,
163 };
164 int status;
165
166 dprintk("NFS call lookup %s\n", name->name);
167 nfs_fattr_init(&dir_attr);
168 nfs_fattr_init(fattr);
169 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
170 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
171 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
172 msg.rpc_argp = fhandle;
173 msg.rpc_resp = fattr;
174 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
175 }
176 dprintk("NFS reply lookup: %d\n", status);
177 if (status >= 0)
178 status = nfs_refresh_inode(dir, &dir_attr);
179 return status;
180 }
181
182 static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
183 {
184 struct nfs_fattr fattr;
185 struct nfs3_accessargs arg = {
186 .fh = NFS_FH(inode),
187 };
188 struct nfs3_accessres res = {
189 .fattr = &fattr,
190 };
191 struct rpc_message msg = {
192 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
193 .rpc_argp = &arg,
194 .rpc_resp = &res,
195 .rpc_cred = entry->cred,
196 };
197 int mode = entry->mask;
198 int status;
199
200 dprintk("NFS call access\n");
201
202 if (mode & MAY_READ)
203 arg.access |= NFS3_ACCESS_READ;
204 if (S_ISDIR(inode->i_mode)) {
205 if (mode & MAY_WRITE)
206 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
207 if (mode & MAY_EXEC)
208 arg.access |= NFS3_ACCESS_LOOKUP;
209 } else {
210 if (mode & MAY_WRITE)
211 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
212 if (mode & MAY_EXEC)
213 arg.access |= NFS3_ACCESS_EXECUTE;
214 }
215 nfs_fattr_init(&fattr);
216 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
217 nfs_refresh_inode(inode, &fattr);
218 if (status == 0) {
219 entry->mask = 0;
220 if (res.access & NFS3_ACCESS_READ)
221 entry->mask |= MAY_READ;
222 if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
223 entry->mask |= MAY_WRITE;
224 if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
225 entry->mask |= MAY_EXEC;
226 }
227 dprintk("NFS reply access: %d\n", status);
228 return status;
229 }
230
231 static int nfs3_proc_readlink(struct inode *inode, struct page *page,
232 unsigned int pgbase, unsigned int pglen)
233 {
234 struct nfs_fattr fattr;
235 struct nfs3_readlinkargs args = {
236 .fh = NFS_FH(inode),
237 .pgbase = pgbase,
238 .pglen = pglen,
239 .pages = &page
240 };
241 struct rpc_message msg = {
242 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
243 .rpc_argp = &args,
244 .rpc_resp = &fattr,
245 };
246 int status;
247
248 dprintk("NFS call readlink\n");
249 nfs_fattr_init(&fattr);
250 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
251 nfs_refresh_inode(inode, &fattr);
252 dprintk("NFS reply readlink: %d\n", status);
253 return status;
254 }
255
256 static int nfs3_proc_read(struct nfs_read_data *rdata)
257 {
258 int flags = rdata->flags;
259 struct inode * inode = rdata->inode;
260 struct nfs_fattr * fattr = rdata->res.fattr;
261 struct rpc_message msg = {
262 .rpc_proc = &nfs3_procedures[NFS3PROC_READ],
263 .rpc_argp = &rdata->args,
264 .rpc_resp = &rdata->res,
265 .rpc_cred = rdata->cred,
266 };
267 int status;
268
269 dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
270 (long long) rdata->args.offset);
271 nfs_fattr_init(fattr);
272 status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
273 if (status >= 0)
274 nfs_refresh_inode(inode, fattr);
275 dprintk("NFS reply read: %d\n", status);
276 return status;
277 }
278
279 /*
280 * Create a regular file.
281 * For now, we don't implement O_EXCL.
282 */
283 static int
284 nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
285 int flags, struct nameidata *nd)
286 {
287 struct nfs_fh fhandle;
288 struct nfs_fattr fattr;
289 struct nfs_fattr dir_attr;
290 struct nfs3_createargs arg = {
291 .fh = NFS_FH(dir),
292 .name = dentry->d_name.name,
293 .len = dentry->d_name.len,
294 .sattr = sattr,
295 };
296 struct nfs3_diropres res = {
297 .dir_attr = &dir_attr,
298 .fh = &fhandle,
299 .fattr = &fattr
300 };
301 struct rpc_message msg = {
302 .rpc_proc = &nfs3_procedures[NFS3PROC_CREATE],
303 .rpc_argp = &arg,
304 .rpc_resp = &res,
305 };
306 mode_t mode = sattr->ia_mode;
307 int status;
308
309 dprintk("NFS call create %s\n", dentry->d_name.name);
310 arg.createmode = NFS3_CREATE_UNCHECKED;
311 if (flags & O_EXCL) {
312 arg.createmode = NFS3_CREATE_EXCLUSIVE;
313 arg.verifier[0] = jiffies;
314 arg.verifier[1] = current->pid;
315 }
316
317 sattr->ia_mode &= ~current->fs->umask;
318
319 again:
320 nfs_fattr_init(&dir_attr);
321 nfs_fattr_init(&fattr);
322 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
323 nfs_refresh_inode(dir, &dir_attr);
324
325 /* If the server doesn't support the exclusive creation semantics,
326 * try again with simple 'guarded' mode. */
327 if (status == -ENOTSUPP) {
328 switch (arg.createmode) {
329 case NFS3_CREATE_EXCLUSIVE:
330 arg.createmode = NFS3_CREATE_GUARDED;
331 break;
332
333 case NFS3_CREATE_GUARDED:
334 arg.createmode = NFS3_CREATE_UNCHECKED;
335 break;
336
337 case NFS3_CREATE_UNCHECKED:
338 goto out;
339 }
340 goto again;
341 }
342
343 if (status == 0)
344 status = nfs_instantiate(dentry, &fhandle, &fattr);
345 if (status != 0)
346 goto out;
347
348 /* When we created the file with exclusive semantics, make
349 * sure we set the attributes afterwards. */
350 if (arg.createmode == NFS3_CREATE_EXCLUSIVE) {
351 dprintk("NFS call setattr (post-create)\n");
352
353 if (!(sattr->ia_valid & ATTR_ATIME_SET))
354 sattr->ia_valid |= ATTR_ATIME;
355 if (!(sattr->ia_valid & ATTR_MTIME_SET))
356 sattr->ia_valid |= ATTR_MTIME;
357
358 /* Note: we could use a guarded setattr here, but I'm
359 * not sure this buys us anything (and I'd have
360 * to revamp the NFSv3 XDR code) */
361 status = nfs3_proc_setattr(dentry, &fattr, sattr);
362 if (status == 0)
363 nfs_setattr_update_inode(dentry->d_inode, sattr);
364 nfs_refresh_inode(dentry->d_inode, &fattr);
365 dprintk("NFS reply setattr (post-create): %d\n", status);
366 }
367 if (status != 0)
368 goto out;
369 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
370 out:
371 dprintk("NFS reply create: %d\n", status);
372 return status;
373 }
374
375 static int
376 nfs3_proc_remove(struct inode *dir, struct qstr *name)
377 {
378 struct nfs_fattr dir_attr;
379 struct nfs3_diropargs arg = {
380 .fh = NFS_FH(dir),
381 .name = name->name,
382 .len = name->len
383 };
384 struct rpc_message msg = {
385 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
386 .rpc_argp = &arg,
387 .rpc_resp = &dir_attr,
388 };
389 int status;
390
391 dprintk("NFS call remove %s\n", name->name);
392 nfs_fattr_init(&dir_attr);
393 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
394 nfs_post_op_update_inode(dir, &dir_attr);
395 dprintk("NFS reply remove: %d\n", status);
396 return status;
397 }
398
399 static int
400 nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
401 {
402 struct unlinkxdr {
403 struct nfs3_diropargs arg;
404 struct nfs_fattr res;
405 } *ptr;
406
407 ptr = kmalloc(sizeof(*ptr), GFP_KERNEL);
408 if (!ptr)
409 return -ENOMEM;
410 ptr->arg.fh = NFS_FH(dir->d_inode);
411 ptr->arg.name = name->name;
412 ptr->arg.len = name->len;
413 nfs_fattr_init(&ptr->res);
414 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
415 msg->rpc_argp = &ptr->arg;
416 msg->rpc_resp = &ptr->res;
417 return 0;
418 }
419
420 static int
421 nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
422 {
423 struct rpc_message *msg = &task->tk_msg;
424 struct nfs_fattr *dir_attr;
425
426 if (nfs3_async_handle_jukebox(task, dir->d_inode))
427 return 1;
428 if (msg->rpc_argp) {
429 dir_attr = (struct nfs_fattr*)msg->rpc_resp;
430 nfs_post_op_update_inode(dir->d_inode, dir_attr);
431 kfree(msg->rpc_argp);
432 }
433 return 0;
434 }
435
436 static int
437 nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
438 struct inode *new_dir, struct qstr *new_name)
439 {
440 struct nfs_fattr old_dir_attr, new_dir_attr;
441 struct nfs3_renameargs arg = {
442 .fromfh = NFS_FH(old_dir),
443 .fromname = old_name->name,
444 .fromlen = old_name->len,
445 .tofh = NFS_FH(new_dir),
446 .toname = new_name->name,
447 .tolen = new_name->len
448 };
449 struct nfs3_renameres res = {
450 .fromattr = &old_dir_attr,
451 .toattr = &new_dir_attr
452 };
453 struct rpc_message msg = {
454 .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
455 .rpc_argp = &arg,
456 .rpc_resp = &res,
457 };
458 int status;
459
460 dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
461 nfs_fattr_init(&old_dir_attr);
462 nfs_fattr_init(&new_dir_attr);
463 status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
464 nfs_post_op_update_inode(old_dir, &old_dir_attr);
465 nfs_post_op_update_inode(new_dir, &new_dir_attr);
466 dprintk("NFS reply rename: %d\n", status);
467 return status;
468 }
469
470 static int
471 nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
472 {
473 struct nfs_fattr dir_attr, fattr;
474 struct nfs3_linkargs arg = {
475 .fromfh = NFS_FH(inode),
476 .tofh = NFS_FH(dir),
477 .toname = name->name,
478 .tolen = name->len
479 };
480 struct nfs3_linkres res = {
481 .dir_attr = &dir_attr,
482 .fattr = &fattr
483 };
484 struct rpc_message msg = {
485 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
486 .rpc_argp = &arg,
487 .rpc_resp = &res,
488 };
489 int status;
490
491 dprintk("NFS call link %s\n", name->name);
492 nfs_fattr_init(&dir_attr);
493 nfs_fattr_init(&fattr);
494 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
495 nfs_post_op_update_inode(dir, &dir_attr);
496 nfs_post_op_update_inode(inode, &fattr);
497 dprintk("NFS reply link: %d\n", status);
498 return status;
499 }
500
501 static int
502 nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
503 unsigned int len, struct iattr *sattr)
504 {
505 struct nfs_fh fhandle;
506 struct nfs_fattr fattr, dir_attr;
507 struct nfs3_symlinkargs arg = {
508 .fromfh = NFS_FH(dir),
509 .fromname = dentry->d_name.name,
510 .fromlen = dentry->d_name.len,
511 .pages = &page,
512 .pathlen = len,
513 .sattr = sattr
514 };
515 struct nfs3_diropres res = {
516 .dir_attr = &dir_attr,
517 .fh = &fhandle,
518 .fattr = &fattr
519 };
520 struct rpc_message msg = {
521 .rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK],
522 .rpc_argp = &arg,
523 .rpc_resp = &res,
524 };
525 int status;
526
527 if (len > NFS3_MAXPATHLEN)
528 return -ENAMETOOLONG;
529
530 dprintk("NFS call symlink %s\n", dentry->d_name.name);
531
532 nfs_fattr_init(&dir_attr);
533 nfs_fattr_init(&fattr);
534 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
535 nfs_post_op_update_inode(dir, &dir_attr);
536 if (status != 0)
537 goto out;
538 status = nfs_instantiate(dentry, &fhandle, &fattr);
539 out:
540 dprintk("NFS reply symlink: %d\n", status);
541 return status;
542 }
543
544 static int
545 nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
546 {
547 struct nfs_fh fhandle;
548 struct nfs_fattr fattr, dir_attr;
549 struct nfs3_mkdirargs arg = {
550 .fh = NFS_FH(dir),
551 .name = dentry->d_name.name,
552 .len = dentry->d_name.len,
553 .sattr = sattr
554 };
555 struct nfs3_diropres res = {
556 .dir_attr = &dir_attr,
557 .fh = &fhandle,
558 .fattr = &fattr
559 };
560 struct rpc_message msg = {
561 .rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR],
562 .rpc_argp = &arg,
563 .rpc_resp = &res,
564 };
565 int mode = sattr->ia_mode;
566 int status;
567
568 dprintk("NFS call mkdir %s\n", dentry->d_name.name);
569
570 sattr->ia_mode &= ~current->fs->umask;
571
572 nfs_fattr_init(&dir_attr);
573 nfs_fattr_init(&fattr);
574 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
575 nfs_post_op_update_inode(dir, &dir_attr);
576 if (status != 0)
577 goto out;
578 status = nfs_instantiate(dentry, &fhandle, &fattr);
579 if (status != 0)
580 goto out;
581 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
582 out:
583 dprintk("NFS reply mkdir: %d\n", status);
584 return status;
585 }
586
587 static int
588 nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
589 {
590 struct nfs_fattr dir_attr;
591 struct nfs3_diropargs arg = {
592 .fh = NFS_FH(dir),
593 .name = name->name,
594 .len = name->len
595 };
596 struct rpc_message msg = {
597 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
598 .rpc_argp = &arg,
599 .rpc_resp = &dir_attr,
600 };
601 int status;
602
603 dprintk("NFS call rmdir %s\n", name->name);
604 nfs_fattr_init(&dir_attr);
605 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
606 nfs_post_op_update_inode(dir, &dir_attr);
607 dprintk("NFS reply rmdir: %d\n", status);
608 return status;
609 }
610
611 /*
612 * The READDIR implementation is somewhat hackish - we pass the user buffer
613 * to the encode function, which installs it in the receive iovec.
614 * The decode function itself doesn't perform any decoding, it just makes
615 * sure the reply is syntactically correct.
616 *
617 * Also note that this implementation handles both plain readdir and
618 * readdirplus.
619 */
620 static int
621 nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
622 u64 cookie, struct page *page, unsigned int count, int plus)
623 {
624 struct inode *dir = dentry->d_inode;
625 struct nfs_fattr dir_attr;
626 __be32 *verf = NFS_COOKIEVERF(dir);
627 struct nfs3_readdirargs arg = {
628 .fh = NFS_FH(dir),
629 .cookie = cookie,
630 .verf = {verf[0], verf[1]},
631 .plus = plus,
632 .count = count,
633 .pages = &page
634 };
635 struct nfs3_readdirres res = {
636 .dir_attr = &dir_attr,
637 .verf = verf,
638 .plus = plus
639 };
640 struct rpc_message msg = {
641 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
642 .rpc_argp = &arg,
643 .rpc_resp = &res,
644 .rpc_cred = cred
645 };
646 int status;
647
648 if (plus)
649 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
650
651 dprintk("NFS call readdir%s %d\n",
652 plus? "plus" : "", (unsigned int) cookie);
653
654 nfs_fattr_init(&dir_attr);
655 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
656 nfs_refresh_inode(dir, &dir_attr);
657 dprintk("NFS reply readdir: %d\n", status);
658 return status;
659 }
660
661 static int
662 nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
663 dev_t rdev)
664 {
665 struct nfs_fh fh;
666 struct nfs_fattr fattr, dir_attr;
667 struct nfs3_mknodargs arg = {
668 .fh = NFS_FH(dir),
669 .name = dentry->d_name.name,
670 .len = dentry->d_name.len,
671 .sattr = sattr,
672 .rdev = rdev
673 };
674 struct nfs3_diropres res = {
675 .dir_attr = &dir_attr,
676 .fh = &fh,
677 .fattr = &fattr
678 };
679 struct rpc_message msg = {
680 .rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD],
681 .rpc_argp = &arg,
682 .rpc_resp = &res,
683 };
684 mode_t mode = sattr->ia_mode;
685 int status;
686
687 switch (sattr->ia_mode & S_IFMT) {
688 case S_IFBLK: arg.type = NF3BLK; break;
689 case S_IFCHR: arg.type = NF3CHR; break;
690 case S_IFIFO: arg.type = NF3FIFO; break;
691 case S_IFSOCK: arg.type = NF3SOCK; break;
692 default: return -EINVAL;
693 }
694
695 dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
696 MAJOR(rdev), MINOR(rdev));
697
698 sattr->ia_mode &= ~current->fs->umask;
699
700 nfs_fattr_init(&dir_attr);
701 nfs_fattr_init(&fattr);
702 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
703 nfs_post_op_update_inode(dir, &dir_attr);
704 if (status != 0)
705 goto out;
706 status = nfs_instantiate(dentry, &fh, &fattr);
707 if (status != 0)
708 goto out;
709 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
710 out:
711 dprintk("NFS reply mknod: %d\n", status);
712 return status;
713 }
714
715 static int
716 nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
717 struct nfs_fsstat *stat)
718 {
719 struct rpc_message msg = {
720 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
721 .rpc_argp = fhandle,
722 .rpc_resp = stat,
723 };
724 int status;
725
726 dprintk("NFS call fsstat\n");
727 nfs_fattr_init(stat->fattr);
728 status = rpc_call_sync(server->client, &msg, 0);
729 dprintk("NFS reply statfs: %d\n", status);
730 return status;
731 }
732
733 static int
734 nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
735 struct nfs_fsinfo *info)
736 {
737 struct rpc_message msg = {
738 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
739 .rpc_argp = fhandle,
740 .rpc_resp = info,
741 };
742 int status;
743
744 dprintk("NFS call fsinfo\n");
745 nfs_fattr_init(info->fattr);
746 status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0);
747 dprintk("NFS reply fsinfo: %d\n", status);
748 return status;
749 }
750
751 static int
752 nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
753 struct nfs_pathconf *info)
754 {
755 struct rpc_message msg = {
756 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
757 .rpc_argp = fhandle,
758 .rpc_resp = info,
759 };
760 int status;
761
762 dprintk("NFS call pathconf\n");
763 nfs_fattr_init(info->fattr);
764 status = rpc_call_sync(server->client, &msg, 0);
765 dprintk("NFS reply pathconf: %d\n", status);
766 return status;
767 }
768
769 static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
770 {
771 if (nfs3_async_handle_jukebox(task, data->inode))
772 return -EAGAIN;
773 /* Call back common NFS readpage processing */
774 if (task->tk_status >= 0)
775 nfs_refresh_inode(data->inode, &data->fattr);
776 return 0;
777 }
778
779 static void nfs3_proc_read_setup(struct nfs_read_data *data)
780 {
781 struct rpc_message msg = {
782 .rpc_proc = &nfs3_procedures[NFS3PROC_READ],
783 .rpc_argp = &data->args,
784 .rpc_resp = &data->res,
785 .rpc_cred = data->cred,
786 };
787
788 rpc_call_setup(&data->task, &msg, 0);
789 }
790
791 static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
792 {
793 if (nfs3_async_handle_jukebox(task, data->inode))
794 return -EAGAIN;
795 if (task->tk_status >= 0)
796 nfs_post_op_update_inode(data->inode, data->res.fattr);
797 return 0;
798 }
799
800 static void nfs3_proc_write_setup(struct nfs_write_data *data, int how)
801 {
802 struct rpc_message msg = {
803 .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
804 .rpc_argp = &data->args,
805 .rpc_resp = &data->res,
806 .rpc_cred = data->cred,
807 };
808
809 data->args.stable = NFS_UNSTABLE;
810 if (how & FLUSH_STABLE) {
811 data->args.stable = NFS_FILE_SYNC;
812 if (NFS_I(data->inode)->ncommit)
813 data->args.stable = NFS_DATA_SYNC;
814 }
815
816 /* Finalize the task. */
817 rpc_call_setup(&data->task, &msg, 0);
818 }
819
820 static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
821 {
822 if (nfs3_async_handle_jukebox(task, data->inode))
823 return -EAGAIN;
824 if (task->tk_status >= 0)
825 nfs_post_op_update_inode(data->inode, data->res.fattr);
826 return 0;
827 }
828
829 static void nfs3_proc_commit_setup(struct nfs_write_data *data, int how)
830 {
831 struct rpc_message msg = {
832 .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
833 .rpc_argp = &data->args,
834 .rpc_resp = &data->res,
835 .rpc_cred = data->cred,
836 };
837
838 rpc_call_setup(&data->task, &msg, 0);
839 }
840
841 static int
842 nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
843 {
844 return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl);
845 }
846
847 const struct nfs_rpc_ops nfs_v3_clientops = {
848 .version = 3, /* protocol version */
849 .dentry_ops = &nfs_dentry_operations,
850 .dir_inode_ops = &nfs3_dir_inode_operations,
851 .file_inode_ops = &nfs3_file_inode_operations,
852 .getroot = nfs3_proc_get_root,
853 .getattr = nfs3_proc_getattr,
854 .setattr = nfs3_proc_setattr,
855 .lookup = nfs3_proc_lookup,
856 .access = nfs3_proc_access,
857 .readlink = nfs3_proc_readlink,
858 .read = nfs3_proc_read,
859 .create = nfs3_proc_create,
860 .remove = nfs3_proc_remove,
861 .unlink_setup = nfs3_proc_unlink_setup,
862 .unlink_done = nfs3_proc_unlink_done,
863 .rename = nfs3_proc_rename,
864 .link = nfs3_proc_link,
865 .symlink = nfs3_proc_symlink,
866 .mkdir = nfs3_proc_mkdir,
867 .rmdir = nfs3_proc_rmdir,
868 .readdir = nfs3_proc_readdir,
869 .mknod = nfs3_proc_mknod,
870 .statfs = nfs3_proc_statfs,
871 .fsinfo = nfs3_proc_fsinfo,
872 .pathconf = nfs3_proc_pathconf,
873 .decode_dirent = nfs3_decode_dirent,
874 .read_setup = nfs3_proc_read_setup,
875 .read_done = nfs3_read_done,
876 .write_setup = nfs3_proc_write_setup,
877 .write_done = nfs3_write_done,
878 .commit_setup = nfs3_proc_commit_setup,
879 .commit_done = nfs3_commit_done,
880 .file_open = nfs_open,
881 .file_release = nfs_release,
882 .lock = nfs3_proc_lock,
883 .clear_acl_cache = nfs3_forget_cached_acls,
884 };
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