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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[net-next-2.6.git] / fs / nfs / nfs3proc.c
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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/errno.h>
11#include <linux/string.h>
12#include <linux/sunrpc/clnt.h>
13#include <linux/slab.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 and EKEYEXPIRED error messages */
27static int
28nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
29{
30 int res;
31 do {
32 res = rpc_call_sync(clnt, msg, flags);
33 if (res != -EJUKEBOX && res != -EKEYEXPIRED)
34 break;
35 schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME);
36 res = -ERESTARTSYS;
37 } while (!fatal_signal_pending(current));
38 return res;
39}
40
41#define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
42
43static int
44nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
45{
46 if (task->tk_status != -EJUKEBOX && task->tk_status != -EKEYEXPIRED)
47 return 0;
48 if (task->tk_status == -EJUKEBOX)
49 nfs_inc_stats(inode, NFSIOS_DELAY);
50 task->tk_status = 0;
51 rpc_restart_call(task);
52 rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
53 return 1;
54}
55
56static int
57do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
58 struct nfs_fsinfo *info)
59{
60 struct rpc_message msg = {
61 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
62 .rpc_argp = fhandle,
63 .rpc_resp = info,
64 };
65 int status;
66
67 dprintk("%s: call fsinfo\n", __func__);
68 nfs_fattr_init(info->fattr);
69 status = rpc_call_sync(client, &msg, 0);
70 dprintk("%s: reply fsinfo: %d\n", __func__, status);
71 if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
72 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
73 msg.rpc_resp = info->fattr;
74 status = rpc_call_sync(client, &msg, 0);
75 dprintk("%s: reply getattr: %d\n", __func__, status);
76 }
77 return status;
78}
79
80/*
81 * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
82 */
83static int
84nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
85 struct nfs_fsinfo *info)
86{
87 int status;
88
89 status = do_proc_get_root(server->client, fhandle, info);
90 if (status && server->nfs_client->cl_rpcclient != server->client)
91 status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
92 return status;
93}
94
95/*
96 * One function for each procedure in the NFS protocol.
97 */
98static int
99nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
100 struct nfs_fattr *fattr)
101{
102 struct rpc_message msg = {
103 .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
104 .rpc_argp = fhandle,
105 .rpc_resp = fattr,
106 };
107 int status;
108
109 dprintk("NFS call getattr\n");
110 nfs_fattr_init(fattr);
111 status = rpc_call_sync(server->client, &msg, 0);
112 dprintk("NFS reply getattr: %d\n", status);
113 return status;
114}
115
116static int
117nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
118 struct iattr *sattr)
119{
120 struct inode *inode = dentry->d_inode;
121 struct nfs3_sattrargs arg = {
122 .fh = NFS_FH(inode),
123 .sattr = sattr,
124 };
125 struct rpc_message msg = {
126 .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
127 .rpc_argp = &arg,
128 .rpc_resp = fattr,
129 };
130 int status;
131
132 dprintk("NFS call setattr\n");
133 if (sattr->ia_valid & ATTR_FILE)
134 msg.rpc_cred = nfs_file_cred(sattr->ia_file);
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
143static int
144nfs3_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 nfs_refresh_inode(dir, &dir_attr);
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 return status;
178}
179
180static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
181{
182 struct nfs_fattr fattr;
183 struct nfs3_accessargs arg = {
184 .fh = NFS_FH(inode),
185 };
186 struct nfs3_accessres res = {
187 .fattr = &fattr,
188 };
189 struct rpc_message msg = {
190 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
191 .rpc_argp = &arg,
192 .rpc_resp = &res,
193 .rpc_cred = entry->cred,
194 };
195 int mode = entry->mask;
196 int status;
197
198 dprintk("NFS call access\n");
199
200 if (mode & MAY_READ)
201 arg.access |= NFS3_ACCESS_READ;
202 if (S_ISDIR(inode->i_mode)) {
203 if (mode & MAY_WRITE)
204 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
205 if (mode & MAY_EXEC)
206 arg.access |= NFS3_ACCESS_LOOKUP;
207 } else {
208 if (mode & MAY_WRITE)
209 arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
210 if (mode & MAY_EXEC)
211 arg.access |= NFS3_ACCESS_EXECUTE;
212 }
213 nfs_fattr_init(&fattr);
214 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
215 nfs_refresh_inode(inode, &fattr);
216 if (status == 0) {
217 entry->mask = 0;
218 if (res.access & NFS3_ACCESS_READ)
219 entry->mask |= MAY_READ;
220 if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
221 entry->mask |= MAY_WRITE;
222 if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
223 entry->mask |= MAY_EXEC;
224 }
225 dprintk("NFS reply access: %d\n", status);
226 return status;
227}
228
229static int nfs3_proc_readlink(struct inode *inode, struct page *page,
230 unsigned int pgbase, unsigned int pglen)
231{
232 struct nfs_fattr fattr;
233 struct nfs3_readlinkargs args = {
234 .fh = NFS_FH(inode),
235 .pgbase = pgbase,
236 .pglen = pglen,
237 .pages = &page
238 };
239 struct rpc_message msg = {
240 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
241 .rpc_argp = &args,
242 .rpc_resp = &fattr,
243 };
244 int status;
245
246 dprintk("NFS call readlink\n");
247 nfs_fattr_init(&fattr);
248 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
249 nfs_refresh_inode(inode, &fattr);
250 dprintk("NFS reply readlink: %d\n", status);
251 return status;
252}
253
254struct nfs3_createdata {
255 struct rpc_message msg;
256 union {
257 struct nfs3_createargs create;
258 struct nfs3_mkdirargs mkdir;
259 struct nfs3_symlinkargs symlink;
260 struct nfs3_mknodargs mknod;
261 } arg;
262 struct nfs3_diropres res;
263 struct nfs_fh fh;
264 struct nfs_fattr fattr;
265 struct nfs_fattr dir_attr;
266};
267
268static struct nfs3_createdata *nfs3_alloc_createdata(void)
269{
270 struct nfs3_createdata *data;
271
272 data = kzalloc(sizeof(*data), GFP_KERNEL);
273 if (data != NULL) {
274 data->msg.rpc_argp = &data->arg;
275 data->msg.rpc_resp = &data->res;
276 data->res.fh = &data->fh;
277 data->res.fattr = &data->fattr;
278 data->res.dir_attr = &data->dir_attr;
279 nfs_fattr_init(data->res.fattr);
280 nfs_fattr_init(data->res.dir_attr);
281 }
282 return data;
283}
284
285static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
286{
287 int status;
288
289 status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
290 nfs_post_op_update_inode(dir, data->res.dir_attr);
291 if (status == 0)
292 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
293 return status;
294}
295
296static void nfs3_free_createdata(struct nfs3_createdata *data)
297{
298 kfree(data);
299}
300
301/*
302 * Create a regular file.
303 */
304static int
305nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
306 int flags, struct nameidata *nd)
307{
308 struct nfs3_createdata *data;
309 mode_t mode = sattr->ia_mode;
310 int status = -ENOMEM;
311
312 dprintk("NFS call create %s\n", dentry->d_name.name);
313
314 data = nfs3_alloc_createdata();
315 if (data == NULL)
316 goto out;
317
318 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
319 data->arg.create.fh = NFS_FH(dir);
320 data->arg.create.name = dentry->d_name.name;
321 data->arg.create.len = dentry->d_name.len;
322 data->arg.create.sattr = sattr;
323
324 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
325 if (flags & O_EXCL) {
326 data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
327 data->arg.create.verifier[0] = jiffies;
328 data->arg.create.verifier[1] = current->pid;
329 }
330
331 sattr->ia_mode &= ~current_umask();
332
333 for (;;) {
334 status = nfs3_do_create(dir, dentry, data);
335
336 if (status != -ENOTSUPP)
337 break;
338 /* If the server doesn't support the exclusive creation
339 * semantics, try again with simple 'guarded' mode. */
340 switch (data->arg.create.createmode) {
341 case NFS3_CREATE_EXCLUSIVE:
342 data->arg.create.createmode = NFS3_CREATE_GUARDED;
343 break;
344
345 case NFS3_CREATE_GUARDED:
346 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
347 break;
348
349 case NFS3_CREATE_UNCHECKED:
350 goto out;
351 }
352 nfs_fattr_init(data->res.dir_attr);
353 nfs_fattr_init(data->res.fattr);
354 }
355
356 if (status != 0)
357 goto out;
358
359 /* When we created the file with exclusive semantics, make
360 * sure we set the attributes afterwards. */
361 if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
362 dprintk("NFS call setattr (post-create)\n");
363
364 if (!(sattr->ia_valid & ATTR_ATIME_SET))
365 sattr->ia_valid |= ATTR_ATIME;
366 if (!(sattr->ia_valid & ATTR_MTIME_SET))
367 sattr->ia_valid |= ATTR_MTIME;
368
369 /* Note: we could use a guarded setattr here, but I'm
370 * not sure this buys us anything (and I'd have
371 * to revamp the NFSv3 XDR code) */
372 status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
373 nfs_post_op_update_inode(dentry->d_inode, data->res.fattr);
374 dprintk("NFS reply setattr (post-create): %d\n", status);
375 if (status != 0)
376 goto out;
377 }
378 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
379out:
380 nfs3_free_createdata(data);
381 dprintk("NFS reply create: %d\n", status);
382 return status;
383}
384
385static int
386nfs3_proc_remove(struct inode *dir, struct qstr *name)
387{
388 struct nfs_removeargs arg = {
389 .fh = NFS_FH(dir),
390 .name.len = name->len,
391 .name.name = name->name,
392 };
393 struct nfs_removeres res;
394 struct rpc_message msg = {
395 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
396 .rpc_argp = &arg,
397 .rpc_resp = &res,
398 };
399 int status;
400
401 dprintk("NFS call remove %s\n", name->name);
402 nfs_fattr_init(&res.dir_attr);
403 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
404 nfs_post_op_update_inode(dir, &res.dir_attr);
405 dprintk("NFS reply remove: %d\n", status);
406 return status;
407}
408
409static void
410nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
411{
412 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
413}
414
415static int
416nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
417{
418 struct nfs_removeres *res;
419 if (nfs3_async_handle_jukebox(task, dir))
420 return 0;
421 res = task->tk_msg.rpc_resp;
422 nfs_post_op_update_inode(dir, &res->dir_attr);
423 return 1;
424}
425
426static int
427nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
428 struct inode *new_dir, struct qstr *new_name)
429{
430 struct nfs_fattr old_dir_attr, new_dir_attr;
431 struct nfs3_renameargs arg = {
432 .fromfh = NFS_FH(old_dir),
433 .fromname = old_name->name,
434 .fromlen = old_name->len,
435 .tofh = NFS_FH(new_dir),
436 .toname = new_name->name,
437 .tolen = new_name->len
438 };
439 struct nfs3_renameres res = {
440 .fromattr = &old_dir_attr,
441 .toattr = &new_dir_attr
442 };
443 struct rpc_message msg = {
444 .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
445 .rpc_argp = &arg,
446 .rpc_resp = &res,
447 };
448 int status;
449
450 dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
451 nfs_fattr_init(&old_dir_attr);
452 nfs_fattr_init(&new_dir_attr);
453 status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
454 nfs_post_op_update_inode(old_dir, &old_dir_attr);
455 nfs_post_op_update_inode(new_dir, &new_dir_attr);
456 dprintk("NFS reply rename: %d\n", status);
457 return status;
458}
459
460static int
461nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
462{
463 struct nfs_fattr dir_attr, fattr;
464 struct nfs3_linkargs arg = {
465 .fromfh = NFS_FH(inode),
466 .tofh = NFS_FH(dir),
467 .toname = name->name,
468 .tolen = name->len
469 };
470 struct nfs3_linkres res = {
471 .dir_attr = &dir_attr,
472 .fattr = &fattr
473 };
474 struct rpc_message msg = {
475 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
476 .rpc_argp = &arg,
477 .rpc_resp = &res,
478 };
479 int status;
480
481 dprintk("NFS call link %s\n", name->name);
482 nfs_fattr_init(&dir_attr);
483 nfs_fattr_init(&fattr);
484 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
485 nfs_post_op_update_inode(dir, &dir_attr);
486 nfs_post_op_update_inode(inode, &fattr);
487 dprintk("NFS reply link: %d\n", status);
488 return status;
489}
490
491static int
492nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
493 unsigned int len, struct iattr *sattr)
494{
495 struct nfs3_createdata *data;
496 int status = -ENOMEM;
497
498 if (len > NFS3_MAXPATHLEN)
499 return -ENAMETOOLONG;
500
501 dprintk("NFS call symlink %s\n", dentry->d_name.name);
502
503 data = nfs3_alloc_createdata();
504 if (data == NULL)
505 goto out;
506 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
507 data->arg.symlink.fromfh = NFS_FH(dir);
508 data->arg.symlink.fromname = dentry->d_name.name;
509 data->arg.symlink.fromlen = dentry->d_name.len;
510 data->arg.symlink.pages = &page;
511 data->arg.symlink.pathlen = len;
512 data->arg.symlink.sattr = sattr;
513
514 status = nfs3_do_create(dir, dentry, data);
515
516 nfs3_free_createdata(data);
517out:
518 dprintk("NFS reply symlink: %d\n", status);
519 return status;
520}
521
522static int
523nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
524{
525 struct nfs3_createdata *data;
526 int mode = sattr->ia_mode;
527 int status = -ENOMEM;
528
529 dprintk("NFS call mkdir %s\n", dentry->d_name.name);
530
531 sattr->ia_mode &= ~current_umask();
532
533 data = nfs3_alloc_createdata();
534 if (data == NULL)
535 goto out;
536
537 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
538 data->arg.mkdir.fh = NFS_FH(dir);
539 data->arg.mkdir.name = dentry->d_name.name;
540 data->arg.mkdir.len = dentry->d_name.len;
541 data->arg.mkdir.sattr = sattr;
542
543 status = nfs3_do_create(dir, dentry, data);
544 if (status != 0)
545 goto out;
546
547 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
548out:
549 nfs3_free_createdata(data);
550 dprintk("NFS reply mkdir: %d\n", status);
551 return status;
552}
553
554static int
555nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
556{
557 struct nfs_fattr dir_attr;
558 struct nfs3_diropargs arg = {
559 .fh = NFS_FH(dir),
560 .name = name->name,
561 .len = name->len
562 };
563 struct rpc_message msg = {
564 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
565 .rpc_argp = &arg,
566 .rpc_resp = &dir_attr,
567 };
568 int status;
569
570 dprintk("NFS call rmdir %s\n", name->name);
571 nfs_fattr_init(&dir_attr);
572 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
573 nfs_post_op_update_inode(dir, &dir_attr);
574 dprintk("NFS reply rmdir: %d\n", status);
575 return status;
576}
577
578/*
579 * The READDIR implementation is somewhat hackish - we pass the user buffer
580 * to the encode function, which installs it in the receive iovec.
581 * The decode function itself doesn't perform any decoding, it just makes
582 * sure the reply is syntactically correct.
583 *
584 * Also note that this implementation handles both plain readdir and
585 * readdirplus.
586 */
587static int
588nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
589 u64 cookie, struct page *page, unsigned int count, int plus)
590{
591 struct inode *dir = dentry->d_inode;
592 struct nfs_fattr dir_attr;
593 __be32 *verf = NFS_COOKIEVERF(dir);
594 struct nfs3_readdirargs arg = {
595 .fh = NFS_FH(dir),
596 .cookie = cookie,
597 .verf = {verf[0], verf[1]},
598 .plus = plus,
599 .count = count,
600 .pages = &page
601 };
602 struct nfs3_readdirres res = {
603 .dir_attr = &dir_attr,
604 .verf = verf,
605 .plus = plus
606 };
607 struct rpc_message msg = {
608 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
609 .rpc_argp = &arg,
610 .rpc_resp = &res,
611 .rpc_cred = cred
612 };
613 int status;
614
615 if (plus)
616 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
617
618 dprintk("NFS call readdir%s %d\n",
619 plus? "plus" : "", (unsigned int) cookie);
620
621 nfs_fattr_init(&dir_attr);
622 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
623
624 nfs_invalidate_atime(dir);
625
626 nfs_refresh_inode(dir, &dir_attr);
627 dprintk("NFS reply readdir: %d\n", status);
628 return status;
629}
630
631static int
632nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
633 dev_t rdev)
634{
635 struct nfs3_createdata *data;
636 mode_t mode = sattr->ia_mode;
637 int status = -ENOMEM;
638
639 dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name,
640 MAJOR(rdev), MINOR(rdev));
641
642 sattr->ia_mode &= ~current_umask();
643
644 data = nfs3_alloc_createdata();
645 if (data == NULL)
646 goto out;
647
648 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
649 data->arg.mknod.fh = NFS_FH(dir);
650 data->arg.mknod.name = dentry->d_name.name;
651 data->arg.mknod.len = dentry->d_name.len;
652 data->arg.mknod.sattr = sattr;
653 data->arg.mknod.rdev = rdev;
654
655 switch (sattr->ia_mode & S_IFMT) {
656 case S_IFBLK:
657 data->arg.mknod.type = NF3BLK;
658 break;
659 case S_IFCHR:
660 data->arg.mknod.type = NF3CHR;
661 break;
662 case S_IFIFO:
663 data->arg.mknod.type = NF3FIFO;
664 break;
665 case S_IFSOCK:
666 data->arg.mknod.type = NF3SOCK;
667 break;
668 default:
669 status = -EINVAL;
670 goto out;
671 }
672
673 status = nfs3_do_create(dir, dentry, data);
674 if (status != 0)
675 goto out;
676 status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode);
677out:
678 nfs3_free_createdata(data);
679 dprintk("NFS reply mknod: %d\n", status);
680 return status;
681}
682
683static int
684nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
685 struct nfs_fsstat *stat)
686{
687 struct rpc_message msg = {
688 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
689 .rpc_argp = fhandle,
690 .rpc_resp = stat,
691 };
692 int status;
693
694 dprintk("NFS call fsstat\n");
695 nfs_fattr_init(stat->fattr);
696 status = rpc_call_sync(server->client, &msg, 0);
697 dprintk("NFS reply statfs: %d\n", status);
698 return status;
699}
700
701static int
702do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
703 struct nfs_fsinfo *info)
704{
705 struct rpc_message msg = {
706 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
707 .rpc_argp = fhandle,
708 .rpc_resp = info,
709 };
710 int status;
711
712 dprintk("NFS call fsinfo\n");
713 nfs_fattr_init(info->fattr);
714 status = rpc_call_sync(client, &msg, 0);
715 dprintk("NFS reply fsinfo: %d\n", status);
716 return status;
717}
718
719/*
720 * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
721 * nfs_create_server
722 */
723static int
724nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
725 struct nfs_fsinfo *info)
726{
727 int status;
728
729 status = do_proc_fsinfo(server->client, fhandle, info);
730 if (status && server->nfs_client->cl_rpcclient != server->client)
731 status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
732 return status;
733}
734
735static int
736nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
737 struct nfs_pathconf *info)
738{
739 struct rpc_message msg = {
740 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
741 .rpc_argp = fhandle,
742 .rpc_resp = info,
743 };
744 int status;
745
746 dprintk("NFS call pathconf\n");
747 nfs_fattr_init(info->fattr);
748 status = rpc_call_sync(server->client, &msg, 0);
749 dprintk("NFS reply pathconf: %d\n", status);
750 return status;
751}
752
753static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
754{
755 if (nfs3_async_handle_jukebox(task, data->inode))
756 return -EAGAIN;
757
758 nfs_invalidate_atime(data->inode);
759 nfs_refresh_inode(data->inode, &data->fattr);
760 return 0;
761}
762
763static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
764{
765 msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
766}
767
768static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
769{
770 if (nfs3_async_handle_jukebox(task, data->inode))
771 return -EAGAIN;
772 if (task->tk_status >= 0)
773 nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
774 return 0;
775}
776
777static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
778{
779 msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
780}
781
782static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
783{
784 if (nfs3_async_handle_jukebox(task, data->inode))
785 return -EAGAIN;
786 nfs_refresh_inode(data->inode, data->res.fattr);
787 return 0;
788}
789
790static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
791{
792 msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
793}
794
795static int
796nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
797{
798 struct inode *inode = filp->f_path.dentry->d_inode;
799
800 return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
801}
802
803const struct nfs_rpc_ops nfs_v3_clientops = {
804 .version = 3, /* protocol version */
805 .dentry_ops = &nfs_dentry_operations,
806 .dir_inode_ops = &nfs3_dir_inode_operations,
807 .file_inode_ops = &nfs3_file_inode_operations,
808 .getroot = nfs3_proc_get_root,
809 .getattr = nfs3_proc_getattr,
810 .setattr = nfs3_proc_setattr,
811 .lookup = nfs3_proc_lookup,
812 .access = nfs3_proc_access,
813 .readlink = nfs3_proc_readlink,
814 .create = nfs3_proc_create,
815 .remove = nfs3_proc_remove,
816 .unlink_setup = nfs3_proc_unlink_setup,
817 .unlink_done = nfs3_proc_unlink_done,
818 .rename = nfs3_proc_rename,
819 .link = nfs3_proc_link,
820 .symlink = nfs3_proc_symlink,
821 .mkdir = nfs3_proc_mkdir,
822 .rmdir = nfs3_proc_rmdir,
823 .readdir = nfs3_proc_readdir,
824 .mknod = nfs3_proc_mknod,
825 .statfs = nfs3_proc_statfs,
826 .fsinfo = nfs3_proc_fsinfo,
827 .pathconf = nfs3_proc_pathconf,
828 .decode_dirent = nfs3_decode_dirent,
829 .read_setup = nfs3_proc_read_setup,
830 .read_done = nfs3_read_done,
831 .write_setup = nfs3_proc_write_setup,
832 .write_done = nfs3_write_done,
833 .commit_setup = nfs3_proc_commit_setup,
834 .commit_done = nfs3_commit_done,
835 .lock = nfs3_proc_lock,
836 .clear_acl_cache = nfs3_forget_cached_acls,
837 .close_context = nfs_close_context,
838};
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