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10#include <linux/mm.h>
11#include <linux/errno.h>
12#include <linux/string.h>
13#include <linux/sunrpc/clnt.h>
14#include <linux/slab.h>
15#include <linux/nfs.h>
16#include <linux/nfs3.h>
17#include <linux/nfs_fs.h>
18#include <linux/nfs_page.h>
19#include <linux/lockd/bind.h>
20#include <linux/nfs_mount.h>
21#include <linux/freezer.h>
22#include <linux/xattr.h>
23
24#include "iostat.h"
25#include "internal.h"
26#include "nfs3_fs.h"
27
28#define NFSDBG_FACILITY NFSDBG_PROC
29
30
31static int
32nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
33{
34 int res;
35 do {
36 res = rpc_call_sync(clnt, msg, flags);
37 if (res != -EJUKEBOX)
38 break;
39 freezable_schedule_timeout_killable_unsafe(NFS_JUKEBOX_RETRY_TIME);
40 res = -ERESTARTSYS;
41 } while (!fatal_signal_pending(current));
42 return res;
43}
44
45#define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
46
47static int
48nfs3_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
59static int
60do_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", __func__);
71 nfs_fattr_init(info->fattr);
72 status = rpc_call_sync(client, &msg, 0);
73 dprintk("%s: reply fsinfo: %d\n", __func__, status);
74 if (status == 0 && !(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", __func__, status);
79 }
80 return status;
81}
82
83
84
85
86static int
87nfs3_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
100
101static int
102nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
103 struct nfs_fattr *fattr, struct inode *inode)
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 unsigned short task_flags = 0;
112
113
114 if (inode && (server->flags & NFS_MOUNT_SOFTREVAL))
115 task_flags |= RPC_TASK_TIMEOUT;
116
117 dprintk("NFS call getattr\n");
118 nfs_fattr_init(fattr);
119 status = rpc_call_sync(server->client, &msg, task_flags);
120 dprintk("NFS reply getattr: %d\n", status);
121 return status;
122}
123
124static int
125nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
126 struct iattr *sattr)
127{
128 struct inode *inode = d_inode(dentry);
129 struct nfs3_sattrargs arg = {
130 .fh = NFS_FH(inode),
131 .sattr = sattr,
132 };
133 struct rpc_message msg = {
134 .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
135 .rpc_argp = &arg,
136 .rpc_resp = fattr,
137 };
138 int status;
139
140 dprintk("NFS call setattr\n");
141 if (sattr->ia_valid & ATTR_FILE)
142 msg.rpc_cred = nfs_file_cred(sattr->ia_file);
143 nfs_fattr_init(fattr);
144 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
145 if (status == 0) {
146 nfs_setattr_update_inode(inode, sattr, fattr);
147 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
148 nfs_zap_acl_cache(inode);
149 }
150 dprintk("NFS reply setattr: %d\n", status);
151 return status;
152}
153
154static int
155__nfs3_proc_lookup(struct inode *dir, const char *name, size_t len,
156 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
157 unsigned short task_flags)
158{
159 struct nfs3_diropargs arg = {
160 .fh = NFS_FH(dir),
161 .name = name,
162 .len = len
163 };
164 struct nfs3_diropres res = {
165 .fh = fhandle,
166 .fattr = fattr
167 };
168 struct rpc_message msg = {
169 .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
170 .rpc_argp = &arg,
171 .rpc_resp = &res,
172 };
173 int status;
174
175 res.dir_attr = nfs_alloc_fattr();
176 if (res.dir_attr == NULL)
177 return -ENOMEM;
178
179 nfs_fattr_init(fattr);
180 status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
181 nfs_refresh_inode(dir, res.dir_attr);
182 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
183 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
184 msg.rpc_argp = fhandle;
185 msg.rpc_resp = fattr;
186 status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
187 }
188 nfs_free_fattr(res.dir_attr);
189 dprintk("NFS reply lookup: %d\n", status);
190 return status;
191}
192
193static int
194nfs3_proc_lookup(struct inode *dir, struct dentry *dentry,
195 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
196{
197 unsigned short task_flags = 0;
198
199
200 if (nfs_lookup_is_soft_revalidate(dentry))
201 task_flags |= RPC_TASK_TIMEOUT;
202
203 dprintk("NFS call lookup %pd2\n", dentry);
204 return __nfs3_proc_lookup(dir, dentry->d_name.name,
205 dentry->d_name.len, fhandle, fattr,
206 task_flags);
207}
208
209static int nfs3_proc_lookupp(struct inode *inode, struct nfs_fh *fhandle,
210 struct nfs_fattr *fattr)
211{
212 const char dotdot[] = "..";
213 const size_t len = strlen(dotdot);
214 unsigned short task_flags = 0;
215
216 if (NFS_SERVER(inode)->flags & NFS_MOUNT_SOFTREVAL)
217 task_flags |= RPC_TASK_TIMEOUT;
218
219 return __nfs3_proc_lookup(inode, dotdot, len, fhandle, fattr,
220 task_flags);
221}
222
223static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry,
224 const struct cred *cred)
225{
226 struct nfs3_accessargs arg = {
227 .fh = NFS_FH(inode),
228 .access = entry->mask,
229 };
230 struct nfs3_accessres res;
231 struct rpc_message msg = {
232 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
233 .rpc_argp = &arg,
234 .rpc_resp = &res,
235 .rpc_cred = cred,
236 };
237 int status = -ENOMEM;
238
239 dprintk("NFS call access\n");
240 res.fattr = nfs_alloc_fattr();
241 if (res.fattr == NULL)
242 goto out;
243
244 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
245 nfs_refresh_inode(inode, res.fattr);
246 if (status == 0)
247 nfs_access_set_mask(entry, res.access);
248 nfs_free_fattr(res.fattr);
249out:
250 dprintk("NFS reply access: %d\n", status);
251 return status;
252}
253
254static int nfs3_proc_readlink(struct inode *inode, struct page *page,
255 unsigned int pgbase, unsigned int pglen)
256{
257 struct nfs_fattr *fattr;
258 struct nfs3_readlinkargs args = {
259 .fh = NFS_FH(inode),
260 .pgbase = pgbase,
261 .pglen = pglen,
262 .pages = &page
263 };
264 struct rpc_message msg = {
265 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
266 .rpc_argp = &args,
267 };
268 int status = -ENOMEM;
269
270 dprintk("NFS call readlink\n");
271 fattr = nfs_alloc_fattr();
272 if (fattr == NULL)
273 goto out;
274 msg.rpc_resp = fattr;
275
276 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
277 nfs_refresh_inode(inode, fattr);
278 nfs_free_fattr(fattr);
279out:
280 dprintk("NFS reply readlink: %d\n", status);
281 return status;
282}
283
284struct nfs3_createdata {
285 struct rpc_message msg;
286 union {
287 struct nfs3_createargs create;
288 struct nfs3_mkdirargs mkdir;
289 struct nfs3_symlinkargs symlink;
290 struct nfs3_mknodargs mknod;
291 } arg;
292 struct nfs3_diropres res;
293 struct nfs_fh fh;
294 struct nfs_fattr fattr;
295 struct nfs_fattr dir_attr;
296};
297
298static struct nfs3_createdata *nfs3_alloc_createdata(void)
299{
300 struct nfs3_createdata *data;
301
302 data = kzalloc(sizeof(*data), GFP_KERNEL);
303 if (data != NULL) {
304 data->msg.rpc_argp = &data->arg;
305 data->msg.rpc_resp = &data->res;
306 data->res.fh = &data->fh;
307 data->res.fattr = &data->fattr;
308 data->res.dir_attr = &data->dir_attr;
309 nfs_fattr_init(data->res.fattr);
310 nfs_fattr_init(data->res.dir_attr);
311 }
312 return data;
313}
314
315static struct dentry *
316nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
317{
318 int status;
319
320 status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
321 nfs_post_op_update_inode(dir, data->res.dir_attr);
322 if (status != 0)
323 return ERR_PTR(status);
324
325 return nfs_add_or_obtain(dentry, data->res.fh, data->res.fattr);
326}
327
328static void nfs3_free_createdata(struct nfs3_createdata *data)
329{
330 kfree(data);
331}
332
333
334
335
336static int
337nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
338 int flags)
339{
340 struct posix_acl *default_acl, *acl;
341 struct nfs3_createdata *data;
342 struct dentry *d_alias;
343 int status = -ENOMEM;
344
345 dprintk("NFS call create %pd\n", dentry);
346
347 data = nfs3_alloc_createdata();
348 if (data == NULL)
349 goto out;
350
351 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
352 data->arg.create.fh = NFS_FH(dir);
353 data->arg.create.name = dentry->d_name.name;
354 data->arg.create.len = dentry->d_name.len;
355 data->arg.create.sattr = sattr;
356
357 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
358 if (flags & O_EXCL) {
359 data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
360 data->arg.create.verifier[0] = cpu_to_be32(jiffies);
361 data->arg.create.verifier[1] = cpu_to_be32(current->pid);
362 }
363
364 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
365 if (status)
366 goto out;
367
368 for (;;) {
369 d_alias = nfs3_do_create(dir, dentry, data);
370 status = PTR_ERR_OR_ZERO(d_alias);
371
372 if (status != -ENOTSUPP)
373 break;
374
375
376 switch (data->arg.create.createmode) {
377 case NFS3_CREATE_EXCLUSIVE:
378 data->arg.create.createmode = NFS3_CREATE_GUARDED;
379 break;
380
381 case NFS3_CREATE_GUARDED:
382 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
383 break;
384
385 case NFS3_CREATE_UNCHECKED:
386 goto out_release_acls;
387 }
388 nfs_fattr_init(data->res.dir_attr);
389 nfs_fattr_init(data->res.fattr);
390 }
391
392 if (status != 0)
393 goto out_release_acls;
394
395 if (d_alias)
396 dentry = d_alias;
397
398
399
400 if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
401 dprintk("NFS call setattr (post-create)\n");
402
403 if (!(sattr->ia_valid & ATTR_ATIME_SET))
404 sattr->ia_valid |= ATTR_ATIME;
405 if (!(sattr->ia_valid & ATTR_MTIME_SET))
406 sattr->ia_valid |= ATTR_MTIME;
407
408
409
410
411 status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
412 nfs_post_op_update_inode(d_inode(dentry), data->res.fattr);
413 dprintk("NFS reply setattr (post-create): %d\n", status);
414 if (status != 0)
415 goto out_dput;
416 }
417
418 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
419
420out_dput:
421 dput(d_alias);
422out_release_acls:
423 posix_acl_release(acl);
424 posix_acl_release(default_acl);
425out:
426 nfs3_free_createdata(data);
427 dprintk("NFS reply create: %d\n", status);
428 return status;
429}
430
431static int
432nfs3_proc_remove(struct inode *dir, struct dentry *dentry)
433{
434 struct nfs_removeargs arg = {
435 .fh = NFS_FH(dir),
436 .name = dentry->d_name,
437 };
438 struct nfs_removeres res;
439 struct rpc_message msg = {
440 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
441 .rpc_argp = &arg,
442 .rpc_resp = &res,
443 };
444 int status = -ENOMEM;
445
446 dprintk("NFS call remove %pd2\n", dentry);
447 res.dir_attr = nfs_alloc_fattr();
448 if (res.dir_attr == NULL)
449 goto out;
450
451 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
452 nfs_post_op_update_inode(dir, res.dir_attr);
453 nfs_free_fattr(res.dir_attr);
454out:
455 dprintk("NFS reply remove: %d\n", status);
456 return status;
457}
458
459static void
460nfs3_proc_unlink_setup(struct rpc_message *msg,
461 struct dentry *dentry,
462 struct inode *inode)
463{
464 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
465}
466
467static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
468{
469 rpc_call_start(task);
470}
471
472static int
473nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
474{
475 struct nfs_removeres *res;
476 if (nfs3_async_handle_jukebox(task, dir))
477 return 0;
478 res = task->tk_msg.rpc_resp;
479 nfs_post_op_update_inode(dir, res->dir_attr);
480 return 1;
481}
482
483static void
484nfs3_proc_rename_setup(struct rpc_message *msg,
485 struct dentry *old_dentry,
486 struct dentry *new_dentry)
487{
488 msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
489}
490
491static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
492{
493 rpc_call_start(task);
494}
495
496static int
497nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
498 struct inode *new_dir)
499{
500 struct nfs_renameres *res;
501
502 if (nfs3_async_handle_jukebox(task, old_dir))
503 return 0;
504 res = task->tk_msg.rpc_resp;
505
506 nfs_post_op_update_inode(old_dir, res->old_fattr);
507 nfs_post_op_update_inode(new_dir, res->new_fattr);
508 return 1;
509}
510
511static int
512nfs3_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
513{
514 struct nfs3_linkargs arg = {
515 .fromfh = NFS_FH(inode),
516 .tofh = NFS_FH(dir),
517 .toname = name->name,
518 .tolen = name->len
519 };
520 struct nfs3_linkres res;
521 struct rpc_message msg = {
522 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
523 .rpc_argp = &arg,
524 .rpc_resp = &res,
525 };
526 int status = -ENOMEM;
527
528 dprintk("NFS call link %s\n", name->name);
529 res.fattr = nfs_alloc_fattr();
530 res.dir_attr = nfs_alloc_fattr();
531 if (res.fattr == NULL || res.dir_attr == NULL)
532 goto out;
533
534 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
535 nfs_post_op_update_inode(dir, res.dir_attr);
536 nfs_post_op_update_inode(inode, res.fattr);
537out:
538 nfs_free_fattr(res.dir_attr);
539 nfs_free_fattr(res.fattr);
540 dprintk("NFS reply link: %d\n", status);
541 return status;
542}
543
544static int
545nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
546 unsigned int len, struct iattr *sattr)
547{
548 struct nfs3_createdata *data;
549 struct dentry *d_alias;
550 int status = -ENOMEM;
551
552 if (len > NFS3_MAXPATHLEN)
553 return -ENAMETOOLONG;
554
555 dprintk("NFS call symlink %pd\n", dentry);
556
557 data = nfs3_alloc_createdata();
558 if (data == NULL)
559 goto out;
560 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
561 data->arg.symlink.fromfh = NFS_FH(dir);
562 data->arg.symlink.fromname = dentry->d_name.name;
563 data->arg.symlink.fromlen = dentry->d_name.len;
564 data->arg.symlink.pages = &page;
565 data->arg.symlink.pathlen = len;
566 data->arg.symlink.sattr = sattr;
567
568 d_alias = nfs3_do_create(dir, dentry, data);
569 status = PTR_ERR_OR_ZERO(d_alias);
570
571 if (status == 0)
572 dput(d_alias);
573
574 nfs3_free_createdata(data);
575out:
576 dprintk("NFS reply symlink: %d\n", status);
577 return status;
578}
579
580static int
581nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
582{
583 struct posix_acl *default_acl, *acl;
584 struct nfs3_createdata *data;
585 struct dentry *d_alias;
586 int status = -ENOMEM;
587
588 dprintk("NFS call mkdir %pd\n", dentry);
589
590 data = nfs3_alloc_createdata();
591 if (data == NULL)
592 goto out;
593
594 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
595 if (status)
596 goto out;
597
598 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
599 data->arg.mkdir.fh = NFS_FH(dir);
600 data->arg.mkdir.name = dentry->d_name.name;
601 data->arg.mkdir.len = dentry->d_name.len;
602 data->arg.mkdir.sattr = sattr;
603
604 d_alias = nfs3_do_create(dir, dentry, data);
605 status = PTR_ERR_OR_ZERO(d_alias);
606
607 if (status != 0)
608 goto out_release_acls;
609
610 if (d_alias)
611 dentry = d_alias;
612
613 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
614
615 dput(d_alias);
616out_release_acls:
617 posix_acl_release(acl);
618 posix_acl_release(default_acl);
619out:
620 nfs3_free_createdata(data);
621 dprintk("NFS reply mkdir: %d\n", status);
622 return status;
623}
624
625static int
626nfs3_proc_rmdir(struct inode *dir, const struct qstr *name)
627{
628 struct nfs_fattr *dir_attr;
629 struct nfs3_diropargs arg = {
630 .fh = NFS_FH(dir),
631 .name = name->name,
632 .len = name->len
633 };
634 struct rpc_message msg = {
635 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
636 .rpc_argp = &arg,
637 };
638 int status = -ENOMEM;
639
640 dprintk("NFS call rmdir %s\n", name->name);
641 dir_attr = nfs_alloc_fattr();
642 if (dir_attr == NULL)
643 goto out;
644
645 msg.rpc_resp = dir_attr;
646 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
647 nfs_post_op_update_inode(dir, dir_attr);
648 nfs_free_fattr(dir_attr);
649out:
650 dprintk("NFS reply rmdir: %d\n", status);
651 return status;
652}
653
654
655
656
657
658
659
660
661
662
663static int nfs3_proc_readdir(struct nfs_readdir_arg *nr_arg,
664 struct nfs_readdir_res *nr_res)
665{
666 struct inode *dir = d_inode(nr_arg->dentry);
667 struct nfs3_readdirargs arg = {
668 .fh = NFS_FH(dir),
669 .cookie = nr_arg->cookie,
670 .plus = nr_arg->plus,
671 .count = nr_arg->page_len,
672 .pages = nr_arg->pages
673 };
674 struct nfs3_readdirres res = {
675 .verf = nr_res->verf,
676 .plus = nr_arg->plus,
677 };
678 struct rpc_message msg = {
679 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
680 .rpc_argp = &arg,
681 .rpc_resp = &res,
682 .rpc_cred = nr_arg->cred,
683 };
684 int status = -ENOMEM;
685
686 if (nr_arg->plus)
687 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
688 if (arg.cookie)
689 memcpy(arg.verf, nr_arg->verf, sizeof(arg.verf));
690
691 dprintk("NFS call readdir%s %llu\n", nr_arg->plus ? "plus" : "",
692 (unsigned long long)nr_arg->cookie);
693
694 res.dir_attr = nfs_alloc_fattr();
695 if (res.dir_attr == NULL)
696 goto out;
697
698 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
699
700 nfs_invalidate_atime(dir);
701 nfs_refresh_inode(dir, res.dir_attr);
702
703 nfs_free_fattr(res.dir_attr);
704out:
705 dprintk("NFS reply readdir%s: %d\n", nr_arg->plus ? "plus" : "",
706 status);
707 return status;
708}
709
710static int
711nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
712 dev_t rdev)
713{
714 struct posix_acl *default_acl, *acl;
715 struct nfs3_createdata *data;
716 struct dentry *d_alias;
717 int status = -ENOMEM;
718
719 dprintk("NFS call mknod %pd %u:%u\n", dentry,
720 MAJOR(rdev), MINOR(rdev));
721
722 data = nfs3_alloc_createdata();
723 if (data == NULL)
724 goto out;
725
726 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
727 if (status)
728 goto out;
729
730 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
731 data->arg.mknod.fh = NFS_FH(dir);
732 data->arg.mknod.name = dentry->d_name.name;
733 data->arg.mknod.len = dentry->d_name.len;
734 data->arg.mknod.sattr = sattr;
735 data->arg.mknod.rdev = rdev;
736
737 switch (sattr->ia_mode & S_IFMT) {
738 case S_IFBLK:
739 data->arg.mknod.type = NF3BLK;
740 break;
741 case S_IFCHR:
742 data->arg.mknod.type = NF3CHR;
743 break;
744 case S_IFIFO:
745 data->arg.mknod.type = NF3FIFO;
746 break;
747 case S_IFSOCK:
748 data->arg.mknod.type = NF3SOCK;
749 break;
750 default:
751 status = -EINVAL;
752 goto out_release_acls;
753 }
754
755 d_alias = nfs3_do_create(dir, dentry, data);
756 status = PTR_ERR_OR_ZERO(d_alias);
757 if (status != 0)
758 goto out_release_acls;
759
760 if (d_alias)
761 dentry = d_alias;
762
763 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
764
765 dput(d_alias);
766out_release_acls:
767 posix_acl_release(acl);
768 posix_acl_release(default_acl);
769out:
770 nfs3_free_createdata(data);
771 dprintk("NFS reply mknod: %d\n", status);
772 return status;
773}
774
775static int
776nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
777 struct nfs_fsstat *stat)
778{
779 struct rpc_message msg = {
780 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
781 .rpc_argp = fhandle,
782 .rpc_resp = stat,
783 };
784 int status;
785
786 dprintk("NFS call fsstat\n");
787 nfs_fattr_init(stat->fattr);
788 status = rpc_call_sync(server->client, &msg, 0);
789 dprintk("NFS reply fsstat: %d\n", status);
790 return status;
791}
792
793static int
794do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
795 struct nfs_fsinfo *info)
796{
797 struct rpc_message msg = {
798 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
799 .rpc_argp = fhandle,
800 .rpc_resp = info,
801 };
802 int status;
803
804 dprintk("NFS call fsinfo\n");
805 nfs_fattr_init(info->fattr);
806 status = rpc_call_sync(client, &msg, 0);
807 dprintk("NFS reply fsinfo: %d\n", status);
808 return status;
809}
810
811
812
813
814
815static int
816nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
817 struct nfs_fsinfo *info)
818{
819 int status;
820
821 status = do_proc_fsinfo(server->client, fhandle, info);
822 if (status && server->nfs_client->cl_rpcclient != server->client)
823 status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
824 return status;
825}
826
827static int
828nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
829 struct nfs_pathconf *info)
830{
831 struct rpc_message msg = {
832 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
833 .rpc_argp = fhandle,
834 .rpc_resp = info,
835 };
836 int status;
837
838 dprintk("NFS call pathconf\n");
839 nfs_fattr_init(info->fattr);
840 status = rpc_call_sync(server->client, &msg, 0);
841 dprintk("NFS reply pathconf: %d\n", status);
842 return status;
843}
844
845static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
846{
847 struct inode *inode = hdr->inode;
848 struct nfs_server *server = NFS_SERVER(inode);
849
850 if (hdr->pgio_done_cb != NULL)
851 return hdr->pgio_done_cb(task, hdr);
852
853 if (nfs3_async_handle_jukebox(task, inode))
854 return -EAGAIN;
855
856 if (task->tk_status >= 0 && !server->read_hdrsize)
857 cmpxchg(&server->read_hdrsize, 0, hdr->res.replen);
858
859 nfs_invalidate_atime(inode);
860 nfs_refresh_inode(inode, &hdr->fattr);
861 return 0;
862}
863
864static void nfs3_proc_read_setup(struct nfs_pgio_header *hdr,
865 struct rpc_message *msg)
866{
867 msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
868 hdr->args.replen = NFS_SERVER(hdr->inode)->read_hdrsize;
869}
870
871static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task,
872 struct nfs_pgio_header *hdr)
873{
874 rpc_call_start(task);
875 return 0;
876}
877
878static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
879{
880 struct inode *inode = hdr->inode;
881
882 if (hdr->pgio_done_cb != NULL)
883 return hdr->pgio_done_cb(task, hdr);
884
885 if (nfs3_async_handle_jukebox(task, inode))
886 return -EAGAIN;
887 if (task->tk_status >= 0)
888 nfs_writeback_update_inode(hdr);
889 return 0;
890}
891
892static void nfs3_proc_write_setup(struct nfs_pgio_header *hdr,
893 struct rpc_message *msg,
894 struct rpc_clnt **clnt)
895{
896 msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
897}
898
899static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
900{
901 rpc_call_start(task);
902}
903
904static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
905{
906 if (data->commit_done_cb != NULL)
907 return data->commit_done_cb(task, data);
908
909 if (nfs3_async_handle_jukebox(task, data->inode))
910 return -EAGAIN;
911 nfs_refresh_inode(data->inode, data->res.fattr);
912 return 0;
913}
914
915static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg,
916 struct rpc_clnt **clnt)
917{
918 msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
919}
920
921static void nfs3_nlm_alloc_call(void *data)
922{
923 struct nfs_lock_context *l_ctx = data;
924 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
925 get_nfs_open_context(l_ctx->open_context);
926 nfs_get_lock_context(l_ctx->open_context);
927 }
928}
929
930static bool nfs3_nlm_unlock_prepare(struct rpc_task *task, void *data)
931{
932 struct nfs_lock_context *l_ctx = data;
933 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags))
934 return nfs_async_iocounter_wait(task, l_ctx);
935 return false;
936
937}
938
939static void nfs3_nlm_release_call(void *data)
940{
941 struct nfs_lock_context *l_ctx = data;
942 struct nfs_open_context *ctx;
943 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
944 ctx = l_ctx->open_context;
945 nfs_put_lock_context(l_ctx);
946 put_nfs_open_context(ctx);
947 }
948}
949
950static const struct nlmclnt_operations nlmclnt_fl_close_lock_ops = {
951 .nlmclnt_alloc_call = nfs3_nlm_alloc_call,
952 .nlmclnt_unlock_prepare = nfs3_nlm_unlock_prepare,
953 .nlmclnt_release_call = nfs3_nlm_release_call,
954};
955
956static int
957nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
958{
959 struct inode *inode = file_inode(filp);
960 struct nfs_lock_context *l_ctx = NULL;
961 struct nfs_open_context *ctx = nfs_file_open_context(filp);
962 int status;
963
964 if (fl->fl_flags & FL_CLOSE) {
965 l_ctx = nfs_get_lock_context(ctx);
966 if (IS_ERR(l_ctx))
967 l_ctx = NULL;
968 else
969 set_bit(NFS_CONTEXT_UNLOCK, &ctx->flags);
970 }
971
972 status = nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, l_ctx);
973
974 if (l_ctx)
975 nfs_put_lock_context(l_ctx);
976
977 return status;
978}
979
980static int nfs3_have_delegation(struct inode *inode, fmode_t flags)
981{
982 return 0;
983}
984
985static const struct inode_operations nfs3_dir_inode_operations = {
986 .create = nfs_create,
987 .lookup = nfs_lookup,
988 .link = nfs_link,
989 .unlink = nfs_unlink,
990 .symlink = nfs_symlink,
991 .mkdir = nfs_mkdir,
992 .rmdir = nfs_rmdir,
993 .mknod = nfs_mknod,
994 .rename = nfs_rename,
995 .permission = nfs_permission,
996 .getattr = nfs_getattr,
997 .setattr = nfs_setattr,
998#ifdef CONFIG_NFS_V3_ACL
999 .listxattr = nfs3_listxattr,
1000 .get_acl = nfs3_get_acl,
1001 .set_acl = nfs3_set_acl,
1002#endif
1003};
1004
1005static const struct inode_operations nfs3_file_inode_operations = {
1006 .permission = nfs_permission,
1007 .getattr = nfs_getattr,
1008 .setattr = nfs_setattr,
1009#ifdef CONFIG_NFS_V3_ACL
1010 .listxattr = nfs3_listxattr,
1011 .get_acl = nfs3_get_acl,
1012 .set_acl = nfs3_set_acl,
1013#endif
1014};
1015
1016const struct nfs_rpc_ops nfs_v3_clientops = {
1017 .version = 3,
1018 .dentry_ops = &nfs_dentry_operations,
1019 .dir_inode_ops = &nfs3_dir_inode_operations,
1020 .file_inode_ops = &nfs3_file_inode_operations,
1021 .file_ops = &nfs_file_operations,
1022 .nlmclnt_ops = &nlmclnt_fl_close_lock_ops,
1023 .getroot = nfs3_proc_get_root,
1024 .submount = nfs_submount,
1025 .try_get_tree = nfs_try_get_tree,
1026 .getattr = nfs3_proc_getattr,
1027 .setattr = nfs3_proc_setattr,
1028 .lookup = nfs3_proc_lookup,
1029 .lookupp = nfs3_proc_lookupp,
1030 .access = nfs3_proc_access,
1031 .readlink = nfs3_proc_readlink,
1032 .create = nfs3_proc_create,
1033 .remove = nfs3_proc_remove,
1034 .unlink_setup = nfs3_proc_unlink_setup,
1035 .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare,
1036 .unlink_done = nfs3_proc_unlink_done,
1037 .rename_setup = nfs3_proc_rename_setup,
1038 .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare,
1039 .rename_done = nfs3_proc_rename_done,
1040 .link = nfs3_proc_link,
1041 .symlink = nfs3_proc_symlink,
1042 .mkdir = nfs3_proc_mkdir,
1043 .rmdir = nfs3_proc_rmdir,
1044 .readdir = nfs3_proc_readdir,
1045 .mknod = nfs3_proc_mknod,
1046 .statfs = nfs3_proc_statfs,
1047 .fsinfo = nfs3_proc_fsinfo,
1048 .pathconf = nfs3_proc_pathconf,
1049 .decode_dirent = nfs3_decode_dirent,
1050 .pgio_rpc_prepare = nfs3_proc_pgio_rpc_prepare,
1051 .read_setup = nfs3_proc_read_setup,
1052 .read_done = nfs3_read_done,
1053 .write_setup = nfs3_proc_write_setup,
1054 .write_done = nfs3_write_done,
1055 .commit_setup = nfs3_proc_commit_setup,
1056 .commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
1057 .commit_done = nfs3_commit_done,
1058 .lock = nfs3_proc_lock,
1059 .clear_acl_cache = forget_all_cached_acls,
1060 .close_context = nfs_close_context,
1061 .have_delegation = nfs3_have_delegation,
1062 .alloc_client = nfs_alloc_client,
1063 .init_client = nfs_init_client,
1064 .free_client = nfs_free_client,
1065 .create_server = nfs3_create_server,
1066 .clone_server = nfs3_clone_server,
1067};
1068
