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[PATCH] sched: remove dead code from task_stime()
[usb.git] / fs / nfs / nfs3proc.c
blob814d886b6aa4205e8f634451161f291eaa48e10a
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/nfs_mount.h>
20
21 #include "iostat.h"
22 #include "internal.h"
23
24 #define NFSDBG_FACILITY NFSDBG_PROC
25
26 /* A wrapper to handle the EJUKEBOX error message */
27 static int
28 nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
29 {
30 sigset_t oldset;
31 int res;
32 rpc_clnt_sigmask(clnt, &oldset);
33 do {
34 res = rpc_call_sync(clnt, msg, flags);
35 if (res != -EJUKEBOX)
36 break;
37 schedule_timeout_interruptible(NFS_JUKEBOX_RETRY_TIME);
38 res = -ERESTARTSYS;
39 } while (!signalled());
40 rpc_clnt_sigunmask(clnt, &oldset);
41 return res;
42 }
43
44 #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
45
46 static int
47 nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
48 {
49 if (task->tk_status != -EJUKEBOX)
50 return 0;
51 nfs_inc_stats(inode, NFSIOS_DELAY);
52 task->tk_status = 0;
53 rpc_restart_call(task);
54 rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
55 return 1;
56 }
57
58 static int
59 do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
60 struct nfs_fsinfo *info)
61 {
62 struct rpc_message msg = {
63 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
64 .rpc_argp = fhandle,
65 .rpc_resp = info,
66 };
67 int status;
68
69 dprintk("%s: call fsinfo\n", __FUNCTION__);
70 nfs_fattr_init(info->fattr);
71 status = rpc_call_sync(client, &msg, 0);
72 dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status);
73 if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
74 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
75 msg.rpc_resp = info->fattr;
76 status = rpc_call_sync(client, &msg, 0);
77 dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
78 }
79 return status;
80 }
81
82 /*
83 * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
84 */
85 static int
86 nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
87 struct nfs_fsinfo *info)
88 {
89 int status;
90
91 status = do_proc_get_root(server->client, fhandle, info);
92 if (status && server->nfs_client->cl_rpcclient != server->client)
93 status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
94 return status;
95 }
96
97 /*
98 * One function for each procedure in the NFS protocol.
99 */
100 static int
101 nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
102 struct nfs_fattr *fattr)
103 {
104 struct rpc_message msg = {
105 .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
106 .rpc_argp = fhandle,
107 .rpc_resp = fattr,
108 };
109 int status;
110
111 dprintk("NFS call getattr\n");
112 nfs_fattr_init(fattr);
113 status = rpc_call_sync(server->client, &msg, 0);
114 dprintk("NFS reply getattr: %d\n", status);
115 return status;
116 }
117
118 static int
119 nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
120 struct iattr *sattr)
121 {
122 struct inode *inode = dentry->d_inode;
123 struct nfs3_sattrargs arg = {
124 .fh = NFS_FH(inode),
125 .sattr = sattr,
126 };
127 struct rpc_message msg = {
128 .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
129 .rpc_argp = &arg,
130 .rpc_resp = fattr,
131 };
132 int status;
133
134 dprintk("NFS call setattr\n");
135 nfs_fattr_init(fattr);
136 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
137 if (status == 0)
138 nfs_setattr_update_inode(inode, sattr);
139 dprintk("NFS reply setattr: %d\n", status);
140 return status;
141 }
142
143 static int
144 nfs3_proc_lookup(struct inode *dir, struct qstr *name,
145 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
146 {
147 struct nfs_fattr dir_attr;
148 struct nfs3_diropargs arg = {
149 .fh = NFS_FH(dir),
150 .name = name->name,
151 .len = name->len
152 };
153 struct nfs3_diropres res = {
154 .dir_attr = &dir_attr,
155 .fh = fhandle,
156 .fattr = fattr
157 };
158 struct rpc_message msg = {
159 .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
160 .rpc_argp = &arg,
161 .rpc_resp = &res,
162 };
163 int status;
164
165 dprintk("NFS call lookup %s\n", name->name);
166 nfs_fattr_init(&dir_attr);
167 nfs_fattr_init(fattr);
168 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
169 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
170 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
171 msg.rpc_argp = fhandle;
172 msg.rpc_resp = fattr;
173 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
174 }
175 dprintk("NFS reply lookup: %d\n", status);
176 if (status >= 0)
177 status = nfs_refresh_inode(dir, &dir_attr);
178 return status;
179 }
180
181 static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
182 {
183 struct nfs_fattr fattr;
184 struct nfs3_accessargs arg = {
185 .fh = NFS_FH(inode),
186 };
187 struct nfs3_accessres res = {
188 .fattr = &fattr,
189 };
190 struct rpc_message msg = {
191 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
192 .rpc_argp = &arg,
193 .rpc_resp = &res,
194 .rpc_cred = entry->cred,
195 };
196 int mode = entry->mask;
197 int status;
198
199 dprintk("NFS call access\n");
200
201 if (mode & MAY_READ)
202 arg.access |= NFS3_ACCESS_READ;
203 if (S_ISDIR(inode->i_mode)) {
204 if (mode & MAY_WRITE)
205 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
206 if (mode & MAY_EXEC)
207 arg.access |= NFS3_ACCESS_LOOKUP;
208 } else {
209 if (mode & MAY_WRITE)
210 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
211 if (mode & MAY_EXEC)
212 arg.access |= NFS3_ACCESS_EXECUTE;
213 }
214 nfs_fattr_init(&fattr);
215 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
216 nfs_refresh_inode(inode, &fattr);
217 if (status == 0) {
218 entry->mask = 0;
219 if (res.access & NFS3_ACCESS_READ)
220 entry->mask |= MAY_READ;
221 if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
222 entry->mask |= MAY_WRITE;
223 if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
224 entry->mask |= MAY_EXEC;
225 }
226 dprintk("NFS reply access: %d\n", status);
227 return status;
228 }
229
230 static int nfs3_proc_readlink(struct inode *inode, struct page *page,
231 unsigned int pgbase, unsigned int pglen)
232 {
233 struct nfs_fattr fattr;
234 struct nfs3_readlinkargs args = {
235 .fh = NFS_FH(inode),
236 .pgbase = pgbase,
237 .pglen = pglen,
238 .pages = &page
239 };
240 struct rpc_message msg = {
241 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
242 .rpc_argp = &args,
243 .rpc_resp = &fattr,
244 };
245 int status;
246
247 dprintk("NFS call readlink\n");
248 nfs_fattr_init(&fattr);
249 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
250 nfs_refresh_inode(inode, &fattr);
251 dprintk("NFS reply readlink: %d\n", status);
252 return status;
253 }
254
255 /*
256 * Create a regular file.
257 * For now, we don't implement O_EXCL.
258 */
259 static int
260 nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
261 int flags, struct nameidata *nd)
262 {
263 struct nfs_fh fhandle;
264 struct nfs_fattr fattr;
265 struct nfs_fattr dir_attr;
266 struct nfs3_createargs arg = {
267 .fh = NFS_FH(dir),
268 .name = dentry->d_name.name,
269 .len = dentry->d_name.len,
270 .sattr = sattr,
271 };
272 struct nfs3_diropres res = {
273 .dir_attr = &dir_attr,
274 .fh = &fhandle,
275 .fattr = &fattr
276 };
277 struct rpc_message msg = {
278 .rpc_proc = &nfs3_procedures[NFS3PROC_CREATE],
279 .rpc_argp = &arg,
280 .rpc_resp = &res,
281 };
282 mode_t mode = sattr->ia_mode;
283 int status;
284
285 dprintk("NFS call create %s\n", dentry->d_name.name);
286 arg.createmode = NFS3_CREATE_UNCHECKED;
287 if (flags & O_EXCL) {
288 arg.createmode = NFS3_CREATE_EXCLUSIVE;
289 arg.verifier[0] = jiffies;
290 arg.verifier[1] = current->pid;
291 }
292
293 sattr->ia_mode &= ~current->fs->umask;
294
295 again:
296 nfs_fattr_init(&dir_attr);
297 nfs_fattr_init(&fattr);
298 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
299 nfs_refresh_inode(dir, &dir_attr);
300
301 /* If the server doesn't support the exclusive creation semantics,
302 * try again with simple 'guarded' mode. */
303 if (status == -ENOTSUPP) {
304 switch (arg.createmode) {
305 case NFS3_CREATE_EXCLUSIVE:
306 arg.createmode = NFS3_CREATE_GUARDED;
307 break;
308
309 case NFS3_CREATE_GUARDED:
310 arg.createmode = NFS3_CREATE_UNCHECKED;
311 break;
312
313 case NFS3_CREATE_UNCHECKED:
314 goto out;
315 }
316 goto again;
317 }
318
319 if (status == 0)
320 status = nfs_instantiate(dentry, &fhandle, &fattr);
321 if (status != 0)
322 goto out;
323
324 /* When we created the file with exclusive semantics, make
325 * sure we set the attributes afterwards. */
326 if (arg.createmode == NFS3_CREATE_EXCLUSIVE) {
327 dprintk("NFS call setattr (post-create)\n");
328
329 if (!(sattr->ia_valid & ATTR_ATIME_SET))
330 sattr->ia_valid |= ATTR_ATIME;
331 if (!(sattr->ia_valid & ATTR_MTIME_SET))
332 sattr->ia_valid |= ATTR_MTIME;
333
334 /* Note: we could use a guarded setattr here, but I'm
335 * not sure this buys us anything (and I'd have
336 * to revamp the NFSv3 XDR code) */
337 status = nfs3_proc_setattr(dentry, &fattr, sattr);
338 nfs_post_op_update_inode(dentry->d_inode, &fattr);
339 dprintk("NFS reply setattr (post-create): %d\n", status);
340 }
341 if (status != 0)
342 goto out;
343 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
344 out:
345 dprintk("NFS reply create: %d\n", status);
346 return status;
347 }
348
349 static int
350 nfs3_proc_remove(struct inode *dir, struct qstr *name)
351 {
352 struct nfs_fattr dir_attr;
353 struct nfs3_diropargs arg = {
354 .fh = NFS_FH(dir),
355 .name = name->name,
356 .len = name->len
357 };
358 struct rpc_message msg = {
359 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
360 .rpc_argp = &arg,
361 .rpc_resp = &dir_attr,
362 };
363 int status;
364
365 dprintk("NFS call remove %s\n", name->name);
366 nfs_fattr_init(&dir_attr);
367 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
368 nfs_post_op_update_inode(dir, &dir_attr);
369 dprintk("NFS reply remove: %d\n", status);
370 return status;
371 }
372
373 static int
374 nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
375 {
376 struct unlinkxdr {
377 struct nfs3_diropargs arg;
378 struct nfs_fattr res;
379 } *ptr;
380
381 ptr = kmalloc(sizeof(*ptr), GFP_KERNEL);
382 if (!ptr)
383 return -ENOMEM;
384 ptr->arg.fh = NFS_FH(dir->d_inode);
385 ptr->arg.name = name->name;
386 ptr->arg.len = name->len;
387 nfs_fattr_init(&ptr->res);
388 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
389 msg->rpc_argp = &ptr->arg;
390 msg->rpc_resp = &ptr->res;
391 return 0;
392 }
393
394 static int
395 nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
396 {
397 struct rpc_message *msg = &task->tk_msg;
398 struct nfs_fattr *dir_attr;
399
400 if (nfs3_async_handle_jukebox(task, dir->d_inode))
401 return 1;
402 if (msg->rpc_argp) {
403 dir_attr = (struct nfs_fattr*)msg->rpc_resp;
404 nfs_post_op_update_inode(dir->d_inode, dir_attr);
405 kfree(msg->rpc_argp);
406 }
407 return 0;
408 }
409
410 static int
411 nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
412 struct inode *new_dir, struct qstr *new_name)
413 {
414 struct nfs_fattr old_dir_attr, new_dir_attr;
415 struct nfs3_renameargs arg = {
416 .fromfh = NFS_FH(old_dir),
417 .fromname = old_name->name,
418 .fromlen = old_name->len,
419 .tofh = NFS_FH(new_dir),
420 .toname = new_name->name,
421 .tolen = new_name->len
422 };
423 struct nfs3_renameres res = {
424 .fromattr = &old_dir_attr,
425 .toattr = &new_dir_attr
426 };
427 struct rpc_message msg = {
428 .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
429 .rpc_argp = &arg,
430 .rpc_resp = &res,
431 };
432 int status;
433
434 dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
435 nfs_fattr_init(&old_dir_attr);
436 nfs_fattr_init(&new_dir_attr);
437 status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
438 nfs_post_op_update_inode(old_dir, &old_dir_attr);
439 nfs_post_op_update_inode(new_dir, &new_dir_attr);
440 dprintk("NFS reply rename: %d\n", status);
441 return status;
442 }
443
444 static int
445 nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
446 {
447 struct nfs_fattr dir_attr, fattr;
448 struct nfs3_linkargs arg = {
449 .fromfh = NFS_FH(inode),
450 .tofh = NFS_FH(dir),
451 .toname = name->name,
452 .tolen = name->len
453 };
454 struct nfs3_linkres res = {
455 .dir_attr = &dir_attr,
456 .fattr = &fattr
457 };
458 struct rpc_message msg = {
459 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
460 .rpc_argp = &arg,
461 .rpc_resp = &res,
462 };
463 int status;
464
465 dprintk("NFS call link %s\n", name->name);
466 nfs_fattr_init(&dir_attr);
467 nfs_fattr_init(&fattr);
468 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
469 nfs_post_op_update_inode(dir, &dir_attr);
470 nfs_post_op_update_inode(inode, &fattr);
471 dprintk("NFS reply link: %d\n", status);
472 return status;
473 }
474
475 static int
476 nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
477 unsigned int len, struct iattr *sattr)
478 {
479 struct nfs_fh fhandle;
480 struct nfs_fattr fattr, dir_attr;
481 struct nfs3_symlinkargs arg = {
482 .fromfh = NFS_FH(dir),
483 .fromname = dentry->d_name.name,
484 .fromlen = dentry->d_name.len,
485 .pages = &page,
486 .pathlen = len,
487 .sattr = sattr
488 };
489 struct nfs3_diropres res = {
490 .dir_attr = &dir_attr,
491 .fh = &fhandle,
492 .fattr = &fattr
493 };
494 struct rpc_message msg = {
495 .rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK],
496 .rpc_argp = &arg,
497 .rpc_resp = &res,
498 };
499 int status;
500
501 if (len > NFS3_MAXPATHLEN)
502 return -ENAMETOOLONG;
503
504 dprintk("NFS call symlink %s\n", dentry->d_name.name);
505
506 nfs_fattr_init(&dir_attr);
507 nfs_fattr_init(&fattr);
508 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
509 nfs_post_op_update_inode(dir, &dir_attr);
510 if (status != 0)
511 goto out;
512 status = nfs_instantiate(dentry, &fhandle, &fattr);
513 out:
514 dprintk("NFS reply symlink: %d\n", status);
515 return status;
516 }
517
518 static int
519 nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
520 {
521 struct nfs_fh fhandle;
522 struct nfs_fattr fattr, dir_attr;
523 struct nfs3_mkdirargs arg = {
524 .fh = NFS_FH(dir),
525 .name = dentry->d_name.name,
526 .len = dentry->d_name.len,
527 .sattr = sattr
528 };
529 struct nfs3_diropres res = {
530 .dir_attr = &dir_attr,
531 .fh = &fhandle,
532 .fattr = &fattr
533 };
534 struct rpc_message msg = {
535 .rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR],
536 .rpc_argp = &arg,
537 .rpc_resp = &res,
538 };
539 int mode = sattr->ia_mode;
540 int status;
541
542 dprintk("NFS call mkdir %s\n", dentry->d_name.name);
543
544 sattr->ia_mode &= ~current->fs->umask;
545
546 nfs_fattr_init(&dir_attr);
547 nfs_fattr_init(&fattr);
548 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
549 nfs_post_op_update_inode(dir, &dir_attr);
550 if (status != 0)
551 goto out;
552 status = nfs_instantiate(dentry, &fhandle, &fattr);
553 if (status != 0)
554 goto out;
555 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
556 out:
557 dprintk("NFS reply mkdir: %d\n", status);
558 return status;
559 }
560
561 static int
562 nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
563 {
564 struct nfs_fattr dir_attr;
565 struct nfs3_diropargs arg = {
566 .fh = NFS_FH(dir),
567 .name = name->name,
568 .len = name->len
569 };
570 struct rpc_message msg = {
571 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
572 .rpc_argp = &arg,
573 .rpc_resp = &dir_attr,
574 };
575 int status;
576
577 dprintk("NFS call rmdir %s\n", name->name);
578 nfs_fattr_init(&dir_attr);
579 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
580 nfs_post_op_update_inode(dir, &dir_attr);
581 dprintk("NFS reply rmdir: %d\n", status);
582 return status;
583 }
584
585 /*
586 * The READDIR implementation is somewhat hackish - we pass the user buffer
587 * to the encode function, which installs it in the receive iovec.
588 * The decode function itself doesn't perform any decoding, it just makes
589 * sure the reply is syntactically correct.
590 *
591 * Also note that this implementation handles both plain readdir and
592 * readdirplus.
593 */
594 static int
595 nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
596 u64 cookie, struct page *page, unsigned int count, int plus)
597 {
598 struct inode *dir = dentry->d_inode;
599 struct nfs_fattr dir_attr;
600 __be32 *verf = NFS_COOKIEVERF(dir);
601 struct nfs3_readdirargs arg = {
602 .fh = NFS_FH(dir),
603 .cookie = cookie,
604 .verf = {verf[0], verf[1]},
605 .plus = plus,
606 .count = count,
607 .pages = &page
608 };
609 struct nfs3_readdirres res = {
610 .dir_attr = &dir_attr,
611 .verf = verf,
612 .plus = plus
613 };
614 struct rpc_message msg = {
615 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
616 .rpc_argp = &arg,
617 .rpc_resp = &res,
618 .rpc_cred = cred
619 };
620 int status;
621
622 if (plus)
623 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
624
625 dprintk("NFS call readdir%s %d\n",
626 plus? "plus" : "", (unsigned int) cookie);
627
628 nfs_fattr_init(&dir_attr);
629 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
630 nfs_refresh_inode(dir, &dir_attr);
631 dprintk("NFS reply readdir: %d\n", status);
632 return status;
633 }
634
635 static int
636 nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
637 dev_t rdev)
638 {
639 struct nfs_fh fh;
640 struct nfs_fattr fattr, dir_attr;
641 struct nfs3_mknodargs arg = {
642 .fh = NFS_FH(dir),
643 .name = dentry->d_name.name,
644 .len = dentry->d_name.len,
645 .sattr = sattr,
646 .rdev = rdev
647 };
648 struct nfs3_diropres res = {
649 .dir_attr = &dir_attr,
650 .fh = &fh,
651 .fattr = &fattr
652 };
653 struct rpc_message msg = {
654 .rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD],
655 .rpc_argp = &arg,
656 .rpc_resp = &res,
657 };
658 mode_t mode = sattr->ia_mode;
659 int status;
660
661 switch (sattr->ia_mode & S_IFMT) {
662 case S_IFBLK: arg.type = NF3BLK; break;
663 case S_IFCHR: arg.type = NF3CHR; break;
664 case S_IFIFO: arg.type = NF3FIFO; break;
665 case S_IFSOCK: arg.type = NF3SOCK; break;
666 default: return -EINVAL;
667 }
668
669 dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
670 MAJOR(rdev), MINOR(rdev));
671
672 sattr->ia_mode &= ~current->fs->umask;
673
674 nfs_fattr_init(&dir_attr);
675 nfs_fattr_init(&fattr);
676 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
677 nfs_post_op_update_inode(dir, &dir_attr);
678 if (status != 0)
679 goto out;
680 status = nfs_instantiate(dentry, &fh, &fattr);
681 if (status != 0)
682 goto out;
683 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
684 out:
685 dprintk("NFS reply mknod: %d\n", status);
686 return status;
687 }
688
689 static int
690 nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
691 struct nfs_fsstat *stat)
692 {
693 struct rpc_message msg = {
694 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
695 .rpc_argp = fhandle,
696 .rpc_resp = stat,
697 };
698 int status;
699
700 dprintk("NFS call fsstat\n");
701 nfs_fattr_init(stat->fattr);
702 status = rpc_call_sync(server->client, &msg, 0);
703 dprintk("NFS reply statfs: %d\n", status);
704 return status;
705 }
706
707 static int
708 nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
709 struct nfs_fsinfo *info)
710 {
711 struct rpc_message msg = {
712 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
713 .rpc_argp = fhandle,
714 .rpc_resp = info,
715 };
716 int status;
717
718 dprintk("NFS call fsinfo\n");
719 nfs_fattr_init(info->fattr);
720 status = rpc_call_sync(server->nfs_client->cl_rpcclient, &msg, 0);
721 dprintk("NFS reply fsinfo: %d\n", status);
722 return status;
723 }
724
725 static int
726 nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
727 struct nfs_pathconf *info)
728 {
729 struct rpc_message msg = {
730 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
731 .rpc_argp = fhandle,
732 .rpc_resp = info,
733 };
734 int status;
735
736 dprintk("NFS call pathconf\n");
737 nfs_fattr_init(info->fattr);
738 status = rpc_call_sync(server->client, &msg, 0);
739 dprintk("NFS reply pathconf: %d\n", status);
740 return status;
741 }
742
743 static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
744 {
745 if (nfs3_async_handle_jukebox(task, data->inode))
746 return -EAGAIN;
747 /* Call back common NFS readpage processing */
748 if (task->tk_status >= 0)
749 nfs_refresh_inode(data->inode, &data->fattr);
750 return 0;
751 }
752
753 static void nfs3_proc_read_setup(struct nfs_read_data *data)
754 {
755 struct rpc_message msg = {
756 .rpc_proc = &nfs3_procedures[NFS3PROC_READ],
757 .rpc_argp = &data->args,
758 .rpc_resp = &data->res,
759 .rpc_cred = data->cred,
760 };
761
762 rpc_call_setup(&data->task, &msg, 0);
763 }
764
765 static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
766 {
767 if (nfs3_async_handle_jukebox(task, data->inode))
768 return -EAGAIN;
769 if (task->tk_status >= 0)
770 nfs_post_op_update_inode(data->inode, data->res.fattr);
771 return 0;
772 }
773
774 static void nfs3_proc_write_setup(struct nfs_write_data *data, int how)
775 {
776 struct rpc_message msg = {
777 .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
778 .rpc_argp = &data->args,
779 .rpc_resp = &data->res,
780 .rpc_cred = data->cred,
781 };
782
783 data->args.stable = NFS_UNSTABLE;
784 if (how & FLUSH_STABLE) {
785 data->args.stable = NFS_FILE_SYNC;
786 if (NFS_I(data->inode)->ncommit)
787 data->args.stable = NFS_DATA_SYNC;
788 }
789
790 /* Finalize the task. */
791 rpc_call_setup(&data->task, &msg, 0);
792 }
793
794 static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
795 {
796 if (nfs3_async_handle_jukebox(task, data->inode))
797 return -EAGAIN;
798 if (task->tk_status >= 0)
799 nfs_post_op_update_inode(data->inode, data->res.fattr);
800 return 0;
801 }
802
803 static void nfs3_proc_commit_setup(struct nfs_write_data *data, int how)
804 {
805 struct rpc_message msg = {
806 .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
807 .rpc_argp = &data->args,
808 .rpc_resp = &data->res,
809 .rpc_cred = data->cred,
810 };
811
812 rpc_call_setup(&data->task, &msg, 0);
813 }
814
815 static int
816 nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
817 {
818 return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl);
819 }
820
821 const struct nfs_rpc_ops nfs_v3_clientops = {
822 .version = 3, /* protocol version */
823 .dentry_ops = &nfs_dentry_operations,
824 .dir_inode_ops = &nfs3_dir_inode_operations,
825 .file_inode_ops = &nfs3_file_inode_operations,
826 .getroot = nfs3_proc_get_root,
827 .getattr = nfs3_proc_getattr,
828 .setattr = nfs3_proc_setattr,
829 .lookup = nfs3_proc_lookup,
830 .access = nfs3_proc_access,
831 .readlink = nfs3_proc_readlink,
832 .create = nfs3_proc_create,
833 .remove = nfs3_proc_remove,
834 .unlink_setup = nfs3_proc_unlink_setup,
835 .unlink_done = nfs3_proc_unlink_done,
836 .rename = nfs3_proc_rename,
837 .link = nfs3_proc_link,
838 .symlink = nfs3_proc_symlink,
839 .mkdir = nfs3_proc_mkdir,
840 .rmdir = nfs3_proc_rmdir,
841 .readdir = nfs3_proc_readdir,
842 .mknod = nfs3_proc_mknod,
843 .statfs = nfs3_proc_statfs,
844 .fsinfo = nfs3_proc_fsinfo,
845 .pathconf = nfs3_proc_pathconf,
846 .decode_dirent = nfs3_decode_dirent,
847 .read_setup = nfs3_proc_read_setup,
848 .read_done = nfs3_read_done,
849 .write_setup = nfs3_proc_write_setup,
850 .write_done = nfs3_write_done,
851 .commit_setup = nfs3_proc_commit_setup,
852 .commit_done = nfs3_commit_done,
853 .file_open = nfs_open,
854 .file_release = nfs_release,
855 .lock = nfs3_proc_lock,
856 .clear_acl_cache = nfs3_forget_cached_acls,
857 };
USB Experimental Work