1
2
3
4
5
6
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#include <linux/freezer.h>
21#include <linux/xattr.h>
22
23#include "iostat.h"
24#include "internal.h"
25
26#define NFSDBG_FACILITY NFSDBG_PROC
27
28
29static int
30nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
31{
32 int res;
33 do {
34 res = rpc_call_sync(clnt, msg, flags);
35 if (res != -EJUKEBOX)
36 break;
37 freezable_schedule_timeout_killable_unsafe(NFS_JUKEBOX_RETRY_TIME);
38 res = -ERESTARTSYS;
39 } while (!fatal_signal_pending(current));
40 return res;
41}
42
43#define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
44
45static int
46nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
47{
48 if (task->tk_status != -EJUKEBOX)
49 return 0;
50 if (task->tk_status == -EJUKEBOX)
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
58static int
59do_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", __func__);
70 nfs_fattr_init(info->fattr);
71 status = rpc_call_sync(client, &msg, 0);
72 dprintk("%s: reply fsinfo: %d\n", __func__, status);
73 if (status == 0 && !(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", __func__, status);
78 }
79 return status;
80}
81
82
83
84
85static int
86nfs3_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
99
100static int
101nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
102 struct nfs_fattr *fattr, struct nfs4_label *label)
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
118static int
119nfs3_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 if (sattr->ia_valid & ATTR_FILE)
136 msg.rpc_cred = nfs_file_cred(sattr->ia_file);
137 nfs_fattr_init(fattr);
138 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
139 if (status == 0)
140 nfs_setattr_update_inode(inode, sattr);
141 dprintk("NFS reply setattr: %d\n", status);
142 return status;
143}
144
145static int
146nfs3_proc_lookup(struct inode *dir, struct qstr *name,
147 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
148 struct nfs4_label *label)
149{
150 struct nfs3_diropargs arg = {
151 .fh = NFS_FH(dir),
152 .name = name->name,
153 .len = name->len
154 };
155 struct nfs3_diropres res = {
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 res.dir_attr = nfs_alloc_fattr();
168 if (res.dir_attr == NULL)
169 return -ENOMEM;
170
171 nfs_fattr_init(fattr);
172 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
173 nfs_refresh_inode(dir, res.dir_attr);
174 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
175 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
176 msg.rpc_argp = fhandle;
177 msg.rpc_resp = fattr;
178 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
179 }
180 nfs_free_fattr(res.dir_attr);
181 dprintk("NFS reply lookup: %d\n", status);
182 return status;
183}
184
185static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
186{
187 struct nfs3_accessargs arg = {
188 .fh = NFS_FH(inode),
189 };
190 struct nfs3_accessres res;
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 = -ENOMEM;
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
216 res.fattr = nfs_alloc_fattr();
217 if (res.fattr == NULL)
218 goto out;
219
220 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
221 nfs_refresh_inode(inode, res.fattr);
222 if (status == 0) {
223 entry->mask = 0;
224 if (res.access & NFS3_ACCESS_READ)
225 entry->mask |= MAY_READ;
226 if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
227 entry->mask |= MAY_WRITE;
228 if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
229 entry->mask |= MAY_EXEC;
230 }
231 nfs_free_fattr(res.fattr);
232out:
233 dprintk("NFS reply access: %d\n", status);
234 return status;
235}
236
237static int nfs3_proc_readlink(struct inode *inode, struct page *page,
238 unsigned int pgbase, unsigned int pglen)
239{
240 struct nfs_fattr *fattr;
241 struct nfs3_readlinkargs args = {
242 .fh = NFS_FH(inode),
243 .pgbase = pgbase,
244 .pglen = pglen,
245 .pages = &page
246 };
247 struct rpc_message msg = {
248 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
249 .rpc_argp = &args,
250 };
251 int status = -ENOMEM;
252
253 dprintk("NFS call readlink\n");
254 fattr = nfs_alloc_fattr();
255 if (fattr == NULL)
256 goto out;
257 msg.rpc_resp = fattr;
258
259 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
260 nfs_refresh_inode(inode, fattr);
261 nfs_free_fattr(fattr);
262out:
263 dprintk("NFS reply readlink: %d\n", status);
264 return status;
265}
266
267struct nfs3_createdata {
268 struct rpc_message msg;
269 union {
270 struct nfs3_createargs create;
271 struct nfs3_mkdirargs mkdir;
272 struct nfs3_symlinkargs symlink;
273 struct nfs3_mknodargs mknod;
274 } arg;
275 struct nfs3_diropres res;
276 struct nfs_fh fh;
277 struct nfs_fattr fattr;
278 struct nfs_fattr dir_attr;
279};
280
281static struct nfs3_createdata *nfs3_alloc_createdata(void)
282{
283 struct nfs3_createdata *data;
284
285 data = kzalloc(sizeof(*data), GFP_KERNEL);
286 if (data != NULL) {
287 data->msg.rpc_argp = &data->arg;
288 data->msg.rpc_resp = &data->res;
289 data->res.fh = &data->fh;
290 data->res.fattr = &data->fattr;
291 data->res.dir_attr = &data->dir_attr;
292 nfs_fattr_init(data->res.fattr);
293 nfs_fattr_init(data->res.dir_attr);
294 }
295 return data;
296}
297
298static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
299{
300 int status;
301
302 status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
303 nfs_post_op_update_inode(dir, data->res.dir_attr);
304 if (status == 0)
305 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL);
306 return status;
307}
308
309static void nfs3_free_createdata(struct nfs3_createdata *data)
310{
311 kfree(data);
312}
313
314
315
316
317static int
318nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
319 int flags)
320{
321 struct posix_acl *default_acl, *acl;
322 struct nfs3_createdata *data;
323 int status = -ENOMEM;
324
325 dprintk("NFS call create %pd\n", dentry);
326
327 data = nfs3_alloc_createdata();
328 if (data == NULL)
329 goto out;
330
331 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
332 data->arg.create.fh = NFS_FH(dir);
333 data->arg.create.name = dentry->d_name.name;
334 data->arg.create.len = dentry->d_name.len;
335 data->arg.create.sattr = sattr;
336
337 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
338 if (flags & O_EXCL) {
339 data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
340 data->arg.create.verifier[0] = cpu_to_be32(jiffies);
341 data->arg.create.verifier[1] = cpu_to_be32(current->pid);
342 }
343
344 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
345 if (status)
346 goto out;
347
348 for (;;) {
349 status = nfs3_do_create(dir, dentry, data);
350
351 if (status != -ENOTSUPP)
352 break;
353
354
355 switch (data->arg.create.createmode) {
356 case NFS3_CREATE_EXCLUSIVE:
357 data->arg.create.createmode = NFS3_CREATE_GUARDED;
358 break;
359
360 case NFS3_CREATE_GUARDED:
361 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
362 break;
363
364 case NFS3_CREATE_UNCHECKED:
365 goto out;
366 }
367 nfs_fattr_init(data->res.dir_attr);
368 nfs_fattr_init(data->res.fattr);
369 }
370
371 if (status != 0)
372 goto out_release_acls;
373
374
375
376 if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
377 dprintk("NFS call setattr (post-create)\n");
378
379 if (!(sattr->ia_valid & ATTR_ATIME_SET))
380 sattr->ia_valid |= ATTR_ATIME;
381 if (!(sattr->ia_valid & ATTR_MTIME_SET))
382 sattr->ia_valid |= ATTR_MTIME;
383
384
385
386
387 status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
388 nfs_post_op_update_inode(dentry->d_inode, data->res.fattr);
389 dprintk("NFS reply setattr (post-create): %d\n", status);
390 if (status != 0)
391 goto out_release_acls;
392 }
393
394 status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
395
396out_release_acls:
397 posix_acl_release(acl);
398 posix_acl_release(default_acl);
399out:
400 nfs3_free_createdata(data);
401 dprintk("NFS reply create: %d\n", status);
402 return status;
403}
404
405static int
406nfs3_proc_remove(struct inode *dir, struct qstr *name)
407{
408 struct nfs_removeargs arg = {
409 .fh = NFS_FH(dir),
410 .name = *name,
411 };
412 struct nfs_removeres res;
413 struct rpc_message msg = {
414 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
415 .rpc_argp = &arg,
416 .rpc_resp = &res,
417 };
418 int status = -ENOMEM;
419
420 dprintk("NFS call remove %s\n", name->name);
421 res.dir_attr = nfs_alloc_fattr();
422 if (res.dir_attr == NULL)
423 goto out;
424
425 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
426 nfs_post_op_update_inode(dir, res.dir_attr);
427 nfs_free_fattr(res.dir_attr);
428out:
429 dprintk("NFS reply remove: %d\n", status);
430 return status;
431}
432
433static void
434nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
435{
436 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
437}
438
439static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
440{
441 rpc_call_start(task);
442}
443
444static int
445nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
446{
447 struct nfs_removeres *res;
448 if (nfs3_async_handle_jukebox(task, dir))
449 return 0;
450 res = task->tk_msg.rpc_resp;
451 nfs_post_op_update_inode(dir, res->dir_attr);
452 return 1;
453}
454
455static void
456nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
457{
458 msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
459}
460
461static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
462{
463 rpc_call_start(task);
464}
465
466static int
467nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
468 struct inode *new_dir)
469{
470 struct nfs_renameres *res;
471
472 if (nfs3_async_handle_jukebox(task, old_dir))
473 return 0;
474 res = task->tk_msg.rpc_resp;
475
476 nfs_post_op_update_inode(old_dir, res->old_fattr);
477 nfs_post_op_update_inode(new_dir, res->new_fattr);
478 return 1;
479}
480
481static int
482nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
483{
484 struct nfs3_linkargs arg = {
485 .fromfh = NFS_FH(inode),
486 .tofh = NFS_FH(dir),
487 .toname = name->name,
488 .tolen = name->len
489 };
490 struct nfs3_linkres res;
491 struct rpc_message msg = {
492 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
493 .rpc_argp = &arg,
494 .rpc_resp = &res,
495 };
496 int status = -ENOMEM;
497
498 dprintk("NFS call link %s\n", name->name);
499 res.fattr = nfs_alloc_fattr();
500 res.dir_attr = nfs_alloc_fattr();
501 if (res.fattr == NULL || res.dir_attr == NULL)
502 goto out;
503
504 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
505 nfs_post_op_update_inode(dir, res.dir_attr);
506 nfs_post_op_update_inode(inode, res.fattr);
507out:
508 nfs_free_fattr(res.dir_attr);
509 nfs_free_fattr(res.fattr);
510 dprintk("NFS reply link: %d\n", status);
511 return status;
512}
513
514static int
515nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
516 unsigned int len, struct iattr *sattr)
517{
518 struct nfs3_createdata *data;
519 int status = -ENOMEM;
520
521 if (len > NFS3_MAXPATHLEN)
522 return -ENAMETOOLONG;
523
524 dprintk("NFS call symlink %pd\n", dentry);
525
526 data = nfs3_alloc_createdata();
527 if (data == NULL)
528 goto out;
529 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
530 data->arg.symlink.fromfh = NFS_FH(dir);
531 data->arg.symlink.fromname = dentry->d_name.name;
532 data->arg.symlink.fromlen = dentry->d_name.len;
533 data->arg.symlink.pages = &page;
534 data->arg.symlink.pathlen = len;
535 data->arg.symlink.sattr = sattr;
536
537 status = nfs3_do_create(dir, dentry, data);
538
539 nfs3_free_createdata(data);
540out:
541 dprintk("NFS reply symlink: %d\n", status);
542 return status;
543}
544
545static int
546nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
547{
548 struct posix_acl *default_acl, *acl;
549 struct nfs3_createdata *data;
550 int status = -ENOMEM;
551
552 dprintk("NFS call mkdir %pd\n", dentry);
553
554 data = nfs3_alloc_createdata();
555 if (data == NULL)
556 goto out;
557
558 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
559 if (status)
560 goto out;
561
562 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
563 data->arg.mkdir.fh = NFS_FH(dir);
564 data->arg.mkdir.name = dentry->d_name.name;
565 data->arg.mkdir.len = dentry->d_name.len;
566 data->arg.mkdir.sattr = sattr;
567
568 status = nfs3_do_create(dir, dentry, data);
569 if (status != 0)
570 goto out_release_acls;
571
572 status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
573
574out_release_acls:
575 posix_acl_release(acl);
576 posix_acl_release(default_acl);
577out:
578 nfs3_free_createdata(data);
579 dprintk("NFS reply mkdir: %d\n", status);
580 return status;
581}
582
583static int
584nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
585{
586 struct nfs_fattr *dir_attr;
587 struct nfs3_diropargs arg = {
588 .fh = NFS_FH(dir),
589 .name = name->name,
590 .len = name->len
591 };
592 struct rpc_message msg = {
593 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
594 .rpc_argp = &arg,
595 };
596 int status = -ENOMEM;
597
598 dprintk("NFS call rmdir %s\n", name->name);
599 dir_attr = nfs_alloc_fattr();
600 if (dir_attr == NULL)
601 goto out;
602
603 msg.rpc_resp = dir_attr;
604 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
605 nfs_post_op_update_inode(dir, dir_attr);
606 nfs_free_fattr(dir_attr);
607out:
608 dprintk("NFS reply rmdir: %d\n", status);
609 return status;
610}
611
612
613
614
615
616
617
618
619
620
621static int
622nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
623 u64 cookie, struct page **pages, unsigned int count, int plus)
624{
625 struct inode *dir = dentry->d_inode;
626 __be32 *verf = NFS_I(dir)->cookieverf;
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 = pages
634 };
635 struct nfs3_readdirres res = {
636 .verf = verf,
637 .plus = plus
638 };
639 struct rpc_message msg = {
640 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
641 .rpc_argp = &arg,
642 .rpc_resp = &res,
643 .rpc_cred = cred
644 };
645 int status = -ENOMEM;
646
647 if (plus)
648 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
649
650 dprintk("NFS call readdir%s %d\n",
651 plus? "plus" : "", (unsigned int) cookie);
652
653 res.dir_attr = nfs_alloc_fattr();
654 if (res.dir_attr == NULL)
655 goto out;
656
657 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
658
659 nfs_invalidate_atime(dir);
660 nfs_refresh_inode(dir, res.dir_attr);
661
662 nfs_free_fattr(res.dir_attr);
663out:
664 dprintk("NFS reply readdir%s: %d\n",
665 plus? "plus" : "", status);
666 return status;
667}
668
669static int
670nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
671 dev_t rdev)
672{
673 struct posix_acl *default_acl, *acl;
674 struct nfs3_createdata *data;
675 int status = -ENOMEM;
676
677 dprintk("NFS call mknod %pd %u:%u\n", dentry,
678 MAJOR(rdev), MINOR(rdev));
679
680 data = nfs3_alloc_createdata();
681 if (data == NULL)
682 goto out;
683
684 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
685 if (status)
686 goto out;
687
688 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
689 data->arg.mknod.fh = NFS_FH(dir);
690 data->arg.mknod.name = dentry->d_name.name;
691 data->arg.mknod.len = dentry->d_name.len;
692 data->arg.mknod.sattr = sattr;
693 data->arg.mknod.rdev = rdev;
694
695 switch (sattr->ia_mode & S_IFMT) {
696 case S_IFBLK:
697 data->arg.mknod.type = NF3BLK;
698 break;
699 case S_IFCHR:
700 data->arg.mknod.type = NF3CHR;
701 break;
702 case S_IFIFO:
703 data->arg.mknod.type = NF3FIFO;
704 break;
705 case S_IFSOCK:
706 data->arg.mknod.type = NF3SOCK;
707 break;
708 default:
709 status = -EINVAL;
710 goto out;
711 }
712
713 status = nfs3_do_create(dir, dentry, data);
714 if (status != 0)
715 goto out_release_acls;
716
717 status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
718
719out_release_acls:
720 posix_acl_release(acl);
721 posix_acl_release(default_acl);
722out:
723 nfs3_free_createdata(data);
724 dprintk("NFS reply mknod: %d\n", status);
725 return status;
726}
727
728static int
729nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
730 struct nfs_fsstat *stat)
731{
732 struct rpc_message msg = {
733 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
734 .rpc_argp = fhandle,
735 .rpc_resp = stat,
736 };
737 int status;
738
739 dprintk("NFS call fsstat\n");
740 nfs_fattr_init(stat->fattr);
741 status = rpc_call_sync(server->client, &msg, 0);
742 dprintk("NFS reply fsstat: %d\n", status);
743 return status;
744}
745
746static int
747do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
748 struct nfs_fsinfo *info)
749{
750 struct rpc_message msg = {
751 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
752 .rpc_argp = fhandle,
753 .rpc_resp = info,
754 };
755 int status;
756
757 dprintk("NFS call fsinfo\n");
758 nfs_fattr_init(info->fattr);
759 status = rpc_call_sync(client, &msg, 0);
760 dprintk("NFS reply fsinfo: %d\n", status);
761 return status;
762}
763
764
765
766
767
768static int
769nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
770 struct nfs_fsinfo *info)
771{
772 int status;
773
774 status = do_proc_fsinfo(server->client, fhandle, info);
775 if (status && server->nfs_client->cl_rpcclient != server->client)
776 status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
777 return status;
778}
779
780static int
781nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
782 struct nfs_pathconf *info)
783{
784 struct rpc_message msg = {
785 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
786 .rpc_argp = fhandle,
787 .rpc_resp = info,
788 };
789 int status;
790
791 dprintk("NFS call pathconf\n");
792 nfs_fattr_init(info->fattr);
793 status = rpc_call_sync(server->client, &msg, 0);
794 dprintk("NFS reply pathconf: %d\n", status);
795 return status;
796}
797
798static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
799{
800 struct inode *inode = hdr->inode;
801
802 if (nfs3_async_handle_jukebox(task, inode))
803 return -EAGAIN;
804
805 nfs_invalidate_atime(inode);
806 nfs_refresh_inode(inode, &hdr->fattr);
807 return 0;
808}
809
810static void nfs3_proc_read_setup(struct nfs_pgio_header *hdr,
811 struct rpc_message *msg)
812{
813 msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
814}
815
816static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task,
817 struct nfs_pgio_header *hdr)
818{
819 rpc_call_start(task);
820 return 0;
821}
822
823static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
824{
825 struct inode *inode = hdr->inode;
826
827 if (nfs3_async_handle_jukebox(task, inode))
828 return -EAGAIN;
829 if (task->tk_status >= 0)
830 nfs_post_op_update_inode_force_wcc(inode, hdr->res.fattr);
831 return 0;
832}
833
834static void nfs3_proc_write_setup(struct nfs_pgio_header *hdr,
835 struct rpc_message *msg)
836{
837 msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
838}
839
840static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
841{
842 rpc_call_start(task);
843}
844
845static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
846{
847 if (nfs3_async_handle_jukebox(task, data->inode))
848 return -EAGAIN;
849 nfs_refresh_inode(data->inode, data->res.fattr);
850 return 0;
851}
852
853static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
854{
855 msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
856}
857
858static int
859nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
860{
861 struct inode *inode = file_inode(filp);
862
863 return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
864}
865
866static int nfs3_have_delegation(struct inode *inode, fmode_t flags)
867{
868 return 0;
869}
870
871static int nfs3_return_delegation(struct inode *inode)
872{
873 nfs_wb_all(inode);
874 return 0;
875}
876
877static const struct inode_operations nfs3_dir_inode_operations = {
878 .create = nfs_create,
879 .lookup = nfs_lookup,
880 .link = nfs_link,
881 .unlink = nfs_unlink,
882 .symlink = nfs_symlink,
883 .mkdir = nfs_mkdir,
884 .rmdir = nfs_rmdir,
885 .mknod = nfs_mknod,
886 .rename = nfs_rename,
887 .permission = nfs_permission,
888 .getattr = nfs_getattr,
889 .setattr = nfs_setattr,
890#ifdef CONFIG_NFS_V3_ACL
891 .listxattr = nfs3_listxattr,
892 .getxattr = generic_getxattr,
893 .setxattr = generic_setxattr,
894 .removexattr = generic_removexattr,
895 .get_acl = nfs3_get_acl,
896 .set_acl = nfs3_set_acl,
897#endif
898};
899
900static const struct inode_operations nfs3_file_inode_operations = {
901 .permission = nfs_permission,
902 .getattr = nfs_getattr,
903 .setattr = nfs_setattr,
904#ifdef CONFIG_NFS_V3_ACL
905 .listxattr = nfs3_listxattr,
906 .getxattr = generic_getxattr,
907 .setxattr = generic_setxattr,
908 .removexattr = generic_removexattr,
909 .get_acl = nfs3_get_acl,
910 .set_acl = nfs3_set_acl,
911#endif
912};
913
914const struct nfs_rpc_ops nfs_v3_clientops = {
915 .version = 3,
916 .dentry_ops = &nfs_dentry_operations,
917 .dir_inode_ops = &nfs3_dir_inode_operations,
918 .file_inode_ops = &nfs3_file_inode_operations,
919 .file_ops = &nfs_file_operations,
920 .getroot = nfs3_proc_get_root,
921 .submount = nfs_submount,
922 .try_mount = nfs_try_mount,
923 .getattr = nfs3_proc_getattr,
924 .setattr = nfs3_proc_setattr,
925 .lookup = nfs3_proc_lookup,
926 .access = nfs3_proc_access,
927 .readlink = nfs3_proc_readlink,
928 .create = nfs3_proc_create,
929 .remove = nfs3_proc_remove,
930 .unlink_setup = nfs3_proc_unlink_setup,
931 .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare,
932 .unlink_done = nfs3_proc_unlink_done,
933 .rename_setup = nfs3_proc_rename_setup,
934 .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare,
935 .rename_done = nfs3_proc_rename_done,
936 .link = nfs3_proc_link,
937 .symlink = nfs3_proc_symlink,
938 .mkdir = nfs3_proc_mkdir,
939 .rmdir = nfs3_proc_rmdir,
940 .readdir = nfs3_proc_readdir,
941 .mknod = nfs3_proc_mknod,
942 .statfs = nfs3_proc_statfs,
943 .fsinfo = nfs3_proc_fsinfo,
944 .pathconf = nfs3_proc_pathconf,
945 .decode_dirent = nfs3_decode_dirent,
946 .pgio_rpc_prepare = nfs3_proc_pgio_rpc_prepare,
947 .read_setup = nfs3_proc_read_setup,
948 .read_done = nfs3_read_done,
949 .write_setup = nfs3_proc_write_setup,
950 .write_done = nfs3_write_done,
951 .commit_setup = nfs3_proc_commit_setup,
952 .commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
953 .commit_done = nfs3_commit_done,
954 .lock = nfs3_proc_lock,
955 .clear_acl_cache = forget_all_cached_acls,
956 .close_context = nfs_close_context,
957 .have_delegation = nfs3_have_delegation,
958 .return_delegation = nfs3_return_delegation,
959 .alloc_client = nfs_alloc_client,
960 .init_client = nfs_init_client,
961 .free_client = nfs_free_client,
962 .create_server = nfs3_create_server,
963 .clone_server = nfs3_clone_server,
964};
965
