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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 if (task->tk_status == -EJUKEBOX)
53 nfs_inc_stats(inode, NFSIOS_DELAY);
54 task->tk_status = 0;
55 rpc_restart_call(task);
56 rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
57 return 1;
58}
59
60static int
61do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
62 struct nfs_fsinfo *info)
63{
64 struct rpc_message msg = {
65 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
66 .rpc_argp = fhandle,
67 .rpc_resp = info,
68 };
69 int status;
70
71 dprintk("%s: call fsinfo\n", __func__);
72 nfs_fattr_init(info->fattr);
73 status = rpc_call_sync(client, &msg, 0);
74 dprintk("%s: reply fsinfo: %d\n", __func__, status);
75 if (status == 0 && !(info->fattr->valid & NFS_ATTR_FATTR)) {
76 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
77 msg.rpc_resp = info->fattr;
78 status = rpc_call_sync(client, &msg, 0);
79 dprintk("%s: reply getattr: %d\n", __func__, status);
80 }
81 return status;
82}
83
84
85
86
87static int
88nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
89 struct nfs_fsinfo *info)
90{
91 int status;
92
93 status = do_proc_get_root(server->client, fhandle, info);
94 if (status && server->nfs_client->cl_rpcclient != server->client)
95 status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
96 return status;
97}
98
99
100
101
102static int
103nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
104 struct nfs_fattr *fattr, struct nfs4_label *label,
105 struct inode *inode)
106{
107 struct rpc_message msg = {
108 .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
109 .rpc_argp = fhandle,
110 .rpc_resp = fattr,
111 };
112 int status;
113 unsigned short task_flags = 0;
114
115
116 if (inode && (server->flags & NFS_MOUNT_SOFTREVAL))
117 task_flags |= RPC_TASK_TIMEOUT;
118
119 dprintk("NFS call getattr\n");
120 nfs_fattr_init(fattr);
121 status = rpc_call_sync(server->client, &msg, task_flags);
122 dprintk("NFS reply getattr: %d\n", status);
123 return status;
124}
125
126static int
127nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
128 struct iattr *sattr)
129{
130 struct inode *inode = d_inode(dentry);
131 struct nfs3_sattrargs arg = {
132 .fh = NFS_FH(inode),
133 .sattr = sattr,
134 };
135 struct rpc_message msg = {
136 .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
137 .rpc_argp = &arg,
138 .rpc_resp = fattr,
139 };
140 int status;
141
142 dprintk("NFS call setattr\n");
143 if (sattr->ia_valid & ATTR_FILE)
144 msg.rpc_cred = nfs_file_cred(sattr->ia_file);
145 nfs_fattr_init(fattr);
146 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
147 if (status == 0) {
148 nfs_setattr_update_inode(inode, sattr, fattr);
149 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
150 nfs_zap_acl_cache(inode);
151 }
152 dprintk("NFS reply setattr: %d\n", status);
153 return status;
154}
155
156static int
157__nfs3_proc_lookup(struct inode *dir, const char *name, size_t len,
158 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
159 unsigned short task_flags)
160{
161 struct nfs3_diropargs arg = {
162 .fh = NFS_FH(dir),
163 .name = name,
164 .len = len
165 };
166 struct nfs3_diropres res = {
167 .fh = fhandle,
168 .fattr = fattr
169 };
170 struct rpc_message msg = {
171 .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
172 .rpc_argp = &arg,
173 .rpc_resp = &res,
174 };
175 int status;
176
177 res.dir_attr = nfs_alloc_fattr();
178 if (res.dir_attr == NULL)
179 return -ENOMEM;
180
181 nfs_fattr_init(fattr);
182 status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
183 nfs_refresh_inode(dir, res.dir_attr);
184 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
185 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
186 msg.rpc_argp = fhandle;
187 msg.rpc_resp = fattr;
188 status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
189 }
190 nfs_free_fattr(res.dir_attr);
191 dprintk("NFS reply lookup: %d\n", status);
192 return status;
193}
194
195static int
196nfs3_proc_lookup(struct inode *dir, struct dentry *dentry,
197 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
198 struct nfs4_label *label)
199{
200 unsigned short task_flags = 0;
201
202
203 if (nfs_lookup_is_soft_revalidate(dentry))
204 task_flags |= RPC_TASK_TIMEOUT;
205
206 dprintk("NFS call lookup %pd2\n", dentry);
207 return __nfs3_proc_lookup(dir, dentry->d_name.name,
208 dentry->d_name.len, fhandle, fattr,
209 task_flags);
210}
211
212static int nfs3_proc_lookupp(struct inode *inode, struct nfs_fh *fhandle,
213 struct nfs_fattr *fattr, struct nfs4_label *label)
214{
215 const char dotdot[] = "..";
216 const size_t len = strlen(dotdot);
217 unsigned short task_flags = 0;
218
219 if (NFS_SERVER(inode)->flags & NFS_MOUNT_SOFTREVAL)
220 task_flags |= RPC_TASK_TIMEOUT;
221
222 return __nfs3_proc_lookup(inode, dotdot, len, fhandle, fattr,
223 task_flags);
224}
225
226static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
227{
228 struct nfs3_accessargs arg = {
229 .fh = NFS_FH(inode),
230 .access = entry->mask,
231 };
232 struct nfs3_accessres res;
233 struct rpc_message msg = {
234 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
235 .rpc_argp = &arg,
236 .rpc_resp = &res,
237 .rpc_cred = entry->cred,
238 };
239 int status = -ENOMEM;
240
241 dprintk("NFS call access\n");
242 res.fattr = nfs_alloc_fattr();
243 if (res.fattr == NULL)
244 goto out;
245
246 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
247 nfs_refresh_inode(inode, res.fattr);
248 if (status == 0)
249 nfs_access_set_mask(entry, res.access);
250 nfs_free_fattr(res.fattr);
251out:
252 dprintk("NFS reply access: %d\n", status);
253 return status;
254}
255
256static int nfs3_proc_readlink(struct inode *inode, struct page *page,
257 unsigned int pgbase, unsigned int pglen)
258{
259 struct nfs_fattr *fattr;
260 struct nfs3_readlinkargs args = {
261 .fh = NFS_FH(inode),
262 .pgbase = pgbase,
263 .pglen = pglen,
264 .pages = &page
265 };
266 struct rpc_message msg = {
267 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
268 .rpc_argp = &args,
269 };
270 int status = -ENOMEM;
271
272 dprintk("NFS call readlink\n");
273 fattr = nfs_alloc_fattr();
274 if (fattr == NULL)
275 goto out;
276 msg.rpc_resp = fattr;
277
278 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
279 nfs_refresh_inode(inode, fattr);
280 nfs_free_fattr(fattr);
281out:
282 dprintk("NFS reply readlink: %d\n", status);
283 return status;
284}
285
286struct nfs3_createdata {
287 struct rpc_message msg;
288 union {
289 struct nfs3_createargs create;
290 struct nfs3_mkdirargs mkdir;
291 struct nfs3_symlinkargs symlink;
292 struct nfs3_mknodargs mknod;
293 } arg;
294 struct nfs3_diropres res;
295 struct nfs_fh fh;
296 struct nfs_fattr fattr;
297 struct nfs_fattr dir_attr;
298};
299
300static struct nfs3_createdata *nfs3_alloc_createdata(void)
301{
302 struct nfs3_createdata *data;
303
304 data = kzalloc(sizeof(*data), GFP_KERNEL);
305 if (data != NULL) {
306 data->msg.rpc_argp = &data->arg;
307 data->msg.rpc_resp = &data->res;
308 data->res.fh = &data->fh;
309 data->res.fattr = &data->fattr;
310 data->res.dir_attr = &data->dir_attr;
311 nfs_fattr_init(data->res.fattr);
312 nfs_fattr_init(data->res.dir_attr);
313 }
314 return data;
315}
316
317static struct dentry *
318nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
319{
320 int status;
321
322 status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
323 nfs_post_op_update_inode(dir, data->res.dir_attr);
324 if (status != 0)
325 return ERR_PTR(status);
326
327 return nfs_add_or_obtain(dentry, data->res.fh, data->res.fattr, NULL);
328}
329
330static void nfs3_free_createdata(struct nfs3_createdata *data)
331{
332 kfree(data);
333}
334
335
336
337
338static int
339nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
340 int flags)
341{
342 struct posix_acl *default_acl, *acl;
343 struct nfs3_createdata *data;
344 struct dentry *d_alias;
345 int status = -ENOMEM;
346
347 dprintk("NFS call create %pd\n", dentry);
348
349 data = nfs3_alloc_createdata();
350 if (data == NULL)
351 goto out;
352
353 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
354 data->arg.create.fh = NFS_FH(dir);
355 data->arg.create.name = dentry->d_name.name;
356 data->arg.create.len = dentry->d_name.len;
357 data->arg.create.sattr = sattr;
358
359 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
360 if (flags & O_EXCL) {
361 data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
362 data->arg.create.verifier[0] = cpu_to_be32(jiffies);
363 data->arg.create.verifier[1] = cpu_to_be32(current->pid);
364 }
365
366 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
367 if (status)
368 goto out;
369
370 for (;;) {
371 d_alias = nfs3_do_create(dir, dentry, data);
372 status = PTR_ERR_OR_ZERO(d_alias);
373
374 if (status != -ENOTSUPP)
375 break;
376
377
378 switch (data->arg.create.createmode) {
379 case NFS3_CREATE_EXCLUSIVE:
380 data->arg.create.createmode = NFS3_CREATE_GUARDED;
381 break;
382
383 case NFS3_CREATE_GUARDED:
384 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
385 break;
386
387 case NFS3_CREATE_UNCHECKED:
388 goto out_release_acls;
389 }
390 nfs_fattr_init(data->res.dir_attr);
391 nfs_fattr_init(data->res.fattr);
392 }
393
394 if (status != 0)
395 goto out_release_acls;
396
397 if (d_alias)
398 dentry = d_alias;
399
400
401
402 if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
403 dprintk("NFS call setattr (post-create)\n");
404
405 if (!(sattr->ia_valid & ATTR_ATIME_SET))
406 sattr->ia_valid |= ATTR_ATIME;
407 if (!(sattr->ia_valid & ATTR_MTIME_SET))
408 sattr->ia_valid |= ATTR_MTIME;
409
410
411
412
413 status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
414 nfs_post_op_update_inode(d_inode(dentry), data->res.fattr);
415 dprintk("NFS reply setattr (post-create): %d\n", status);
416 if (status != 0)
417 goto out_dput;
418 }
419
420 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
421
422out_dput:
423 dput(d_alias);
424out_release_acls:
425 posix_acl_release(acl);
426 posix_acl_release(default_acl);
427out:
428 nfs3_free_createdata(data);
429 dprintk("NFS reply create: %d\n", status);
430 return status;
431}
432
433static int
434nfs3_proc_remove(struct inode *dir, struct dentry *dentry)
435{
436 struct nfs_removeargs arg = {
437 .fh = NFS_FH(dir),
438 .name = dentry->d_name,
439 };
440 struct nfs_removeres res;
441 struct rpc_message msg = {
442 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
443 .rpc_argp = &arg,
444 .rpc_resp = &res,
445 };
446 int status = -ENOMEM;
447
448 dprintk("NFS call remove %pd2\n", dentry);
449 res.dir_attr = nfs_alloc_fattr();
450 if (res.dir_attr == NULL)
451 goto out;
452
453 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
454 nfs_post_op_update_inode(dir, res.dir_attr);
455 nfs_free_fattr(res.dir_attr);
456out:
457 dprintk("NFS reply remove: %d\n", status);
458 return status;
459}
460
461static void
462nfs3_proc_unlink_setup(struct rpc_message *msg,
463 struct dentry *dentry,
464 struct inode *inode)
465{
466 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
467}
468
469static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
470{
471 rpc_call_start(task);
472}
473
474static int
475nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
476{
477 struct nfs_removeres *res;
478 if (nfs3_async_handle_jukebox(task, dir))
479 return 0;
480 res = task->tk_msg.rpc_resp;
481 nfs_post_op_update_inode(dir, res->dir_attr);
482 return 1;
483}
484
485static void
486nfs3_proc_rename_setup(struct rpc_message *msg,
487 struct dentry *old_dentry,
488 struct dentry *new_dentry)
489{
490 msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
491}
492
493static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
494{
495 rpc_call_start(task);
496}
497
498static int
499nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
500 struct inode *new_dir)
501{
502 struct nfs_renameres *res;
503
504 if (nfs3_async_handle_jukebox(task, old_dir))
505 return 0;
506 res = task->tk_msg.rpc_resp;
507
508 nfs_post_op_update_inode(old_dir, res->old_fattr);
509 nfs_post_op_update_inode(new_dir, res->new_fattr);
510 return 1;
511}
512
513static int
514nfs3_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
515{
516 struct nfs3_linkargs arg = {
517 .fromfh = NFS_FH(inode),
518 .tofh = NFS_FH(dir),
519 .toname = name->name,
520 .tolen = name->len
521 };
522 struct nfs3_linkres res;
523 struct rpc_message msg = {
524 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
525 .rpc_argp = &arg,
526 .rpc_resp = &res,
527 };
528 int status = -ENOMEM;
529
530 dprintk("NFS call link %s\n", name->name);
531 res.fattr = nfs_alloc_fattr();
532 res.dir_attr = nfs_alloc_fattr();
533 if (res.fattr == NULL || res.dir_attr == NULL)
534 goto out;
535
536 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
537 nfs_post_op_update_inode(dir, res.dir_attr);
538 nfs_post_op_update_inode(inode, res.fattr);
539out:
540 nfs_free_fattr(res.dir_attr);
541 nfs_free_fattr(res.fattr);
542 dprintk("NFS reply link: %d\n", status);
543 return status;
544}
545
546static int
547nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
548 unsigned int len, struct iattr *sattr)
549{
550 struct nfs3_createdata *data;
551 struct dentry *d_alias;
552 int status = -ENOMEM;
553
554 if (len > NFS3_MAXPATHLEN)
555 return -ENAMETOOLONG;
556
557 dprintk("NFS call symlink %pd\n", dentry);
558
559 data = nfs3_alloc_createdata();
560 if (data == NULL)
561 goto out;
562 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
563 data->arg.symlink.fromfh = NFS_FH(dir);
564 data->arg.symlink.fromname = dentry->d_name.name;
565 data->arg.symlink.fromlen = dentry->d_name.len;
566 data->arg.symlink.pages = &page;
567 data->arg.symlink.pathlen = len;
568 data->arg.symlink.sattr = sattr;
569
570 d_alias = nfs3_do_create(dir, dentry, data);
571 status = PTR_ERR_OR_ZERO(d_alias);
572
573 if (status == 0)
574 dput(d_alias);
575
576 nfs3_free_createdata(data);
577out:
578 dprintk("NFS reply symlink: %d\n", status);
579 return status;
580}
581
582static int
583nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
584{
585 struct posix_acl *default_acl, *acl;
586 struct nfs3_createdata *data;
587 struct dentry *d_alias;
588 int status = -ENOMEM;
589
590 dprintk("NFS call mkdir %pd\n", dentry);
591
592 data = nfs3_alloc_createdata();
593 if (data == NULL)
594 goto out;
595
596 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
597 if (status)
598 goto out;
599
600 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
601 data->arg.mkdir.fh = NFS_FH(dir);
602 data->arg.mkdir.name = dentry->d_name.name;
603 data->arg.mkdir.len = dentry->d_name.len;
604 data->arg.mkdir.sattr = sattr;
605
606 d_alias = nfs3_do_create(dir, dentry, data);
607 status = PTR_ERR_OR_ZERO(d_alias);
608
609 if (status != 0)
610 goto out_release_acls;
611
612 if (d_alias)
613 dentry = d_alias;
614
615 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
616
617 dput(d_alias);
618out_release_acls:
619 posix_acl_release(acl);
620 posix_acl_release(default_acl);
621out:
622 nfs3_free_createdata(data);
623 dprintk("NFS reply mkdir: %d\n", status);
624 return status;
625}
626
627static int
628nfs3_proc_rmdir(struct inode *dir, const struct qstr *name)
629{
630 struct nfs_fattr *dir_attr;
631 struct nfs3_diropargs arg = {
632 .fh = NFS_FH(dir),
633 .name = name->name,
634 .len = name->len
635 };
636 struct rpc_message msg = {
637 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
638 .rpc_argp = &arg,
639 };
640 int status = -ENOMEM;
641
642 dprintk("NFS call rmdir %s\n", name->name);
643 dir_attr = nfs_alloc_fattr();
644 if (dir_attr == NULL)
645 goto out;
646
647 msg.rpc_resp = dir_attr;
648 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
649 nfs_post_op_update_inode(dir, dir_attr);
650 nfs_free_fattr(dir_attr);
651out:
652 dprintk("NFS reply rmdir: %d\n", status);
653 return status;
654}
655
656
657
658
659
660
661
662
663
664
665static int nfs3_proc_readdir(struct nfs_readdir_arg *nr_arg,
666 struct nfs_readdir_res *nr_res)
667{
668 struct inode *dir = d_inode(nr_arg->dentry);
669 struct nfs3_readdirargs arg = {
670 .fh = NFS_FH(dir),
671 .cookie = nr_arg->cookie,
672 .plus = nr_arg->plus,
673 .count = nr_arg->page_len,
674 .pages = nr_arg->pages
675 };
676 struct nfs3_readdirres res = {
677 .verf = nr_res->verf,
678 .plus = nr_arg->plus,
679 };
680 struct rpc_message msg = {
681 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
682 .rpc_argp = &arg,
683 .rpc_resp = &res,
684 .rpc_cred = nr_arg->cred,
685 };
686 int status = -ENOMEM;
687
688 if (nr_arg->plus)
689 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
690 if (arg.cookie)
691 memcpy(arg.verf, nr_arg->verf, sizeof(arg.verf));
692
693 dprintk("NFS call readdir%s %llu\n", nr_arg->plus ? "plus" : "",
694 (unsigned long long)nr_arg->cookie);
695
696 res.dir_attr = nfs_alloc_fattr();
697 if (res.dir_attr == NULL)
698 goto out;
699
700 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
701
702 nfs_invalidate_atime(dir);
703 nfs_refresh_inode(dir, res.dir_attr);
704
705 nfs_free_fattr(res.dir_attr);
706out:
707 dprintk("NFS reply readdir%s: %d\n", nr_arg->plus ? "plus" : "",
708 status);
709 return status;
710}
711
712static int
713nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
714 dev_t rdev)
715{
716 struct posix_acl *default_acl, *acl;
717 struct nfs3_createdata *data;
718 struct dentry *d_alias;
719 int status = -ENOMEM;
720
721 dprintk("NFS call mknod %pd %u:%u\n", dentry,
722 MAJOR(rdev), MINOR(rdev));
723
724 data = nfs3_alloc_createdata();
725 if (data == NULL)
726 goto out;
727
728 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
729 if (status)
730 goto out;
731
732 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
733 data->arg.mknod.fh = NFS_FH(dir);
734 data->arg.mknod.name = dentry->d_name.name;
735 data->arg.mknod.len = dentry->d_name.len;
736 data->arg.mknod.sattr = sattr;
737 data->arg.mknod.rdev = rdev;
738
739 switch (sattr->ia_mode & S_IFMT) {
740 case S_IFBLK:
741 data->arg.mknod.type = NF3BLK;
742 break;
743 case S_IFCHR:
744 data->arg.mknod.type = NF3CHR;
745 break;
746 case S_IFIFO:
747 data->arg.mknod.type = NF3FIFO;
748 break;
749 case S_IFSOCK:
750 data->arg.mknod.type = NF3SOCK;
751 break;
752 default:
753 status = -EINVAL;
754 goto out_release_acls;
755 }
756
757 d_alias = nfs3_do_create(dir, dentry, data);
758 status = PTR_ERR_OR_ZERO(d_alias);
759 if (status != 0)
760 goto out_release_acls;
761
762 if (d_alias)
763 dentry = d_alias;
764
765 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
766
767 dput(d_alias);
768out_release_acls:
769 posix_acl_release(acl);
770 posix_acl_release(default_acl);
771out:
772 nfs3_free_createdata(data);
773 dprintk("NFS reply mknod: %d\n", status);
774 return status;
775}
776
777static int
778nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
779 struct nfs_fsstat *stat)
780{
781 struct rpc_message msg = {
782 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
783 .rpc_argp = fhandle,
784 .rpc_resp = stat,
785 };
786 int status;
787
788 dprintk("NFS call fsstat\n");
789 nfs_fattr_init(stat->fattr);
790 status = rpc_call_sync(server->client, &msg, 0);
791 dprintk("NFS reply fsstat: %d\n", status);
792 return status;
793}
794
795static int
796do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
797 struct nfs_fsinfo *info)
798{
799 struct rpc_message msg = {
800 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
801 .rpc_argp = fhandle,
802 .rpc_resp = info,
803 };
804 int status;
805
806 dprintk("NFS call fsinfo\n");
807 nfs_fattr_init(info->fattr);
808 status = rpc_call_sync(client, &msg, 0);
809 dprintk("NFS reply fsinfo: %d\n", status);
810 return status;
811}
812
813
814
815
816
817static int
818nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
819 struct nfs_fsinfo *info)
820{
821 int status;
822
823 status = do_proc_fsinfo(server->client, fhandle, info);
824 if (status && server->nfs_client->cl_rpcclient != server->client)
825 status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
826 return status;
827}
828
829static int
830nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
831 struct nfs_pathconf *info)
832{
833 struct rpc_message msg = {
834 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
835 .rpc_argp = fhandle,
836 .rpc_resp = info,
837 };
838 int status;
839
840 dprintk("NFS call pathconf\n");
841 nfs_fattr_init(info->fattr);
842 status = rpc_call_sync(server->client, &msg, 0);
843 dprintk("NFS reply pathconf: %d\n", status);
844 return status;
845}
846
847static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
848{
849 struct inode *inode = hdr->inode;
850 struct nfs_server *server = NFS_SERVER(inode);
851
852 if (hdr->pgio_done_cb != NULL)
853 return hdr->pgio_done_cb(task, hdr);
854
855 if (nfs3_async_handle_jukebox(task, inode))
856 return -EAGAIN;
857
858 if (task->tk_status >= 0 && !server->read_hdrsize)
859 cmpxchg(&server->read_hdrsize, 0, hdr->res.replen);
860
861 nfs_invalidate_atime(inode);
862 nfs_refresh_inode(inode, &hdr->fattr);
863 return 0;
864}
865
866static void nfs3_proc_read_setup(struct nfs_pgio_header *hdr,
867 struct rpc_message *msg)
868{
869 msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
870 hdr->args.replen = NFS_SERVER(hdr->inode)->read_hdrsize;
871}
872
873static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task,
874 struct nfs_pgio_header *hdr)
875{
876 rpc_call_start(task);
877 return 0;
878}
879
880static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
881{
882 struct inode *inode = hdr->inode;
883
884 if (hdr->pgio_done_cb != NULL)
885 return hdr->pgio_done_cb(task, hdr);
886
887 if (nfs3_async_handle_jukebox(task, inode))
888 return -EAGAIN;
889 if (task->tk_status >= 0)
890 nfs_writeback_update_inode(hdr);
891 return 0;
892}
893
894static void nfs3_proc_write_setup(struct nfs_pgio_header *hdr,
895 struct rpc_message *msg,
896 struct rpc_clnt **clnt)
897{
898 msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
899}
900
901static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
902{
903 rpc_call_start(task);
904}
905
906static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
907{
908 if (data->commit_done_cb != NULL)
909 return data->commit_done_cb(task, data);
910
911 if (nfs3_async_handle_jukebox(task, data->inode))
912 return -EAGAIN;
913 nfs_refresh_inode(data->inode, data->res.fattr);
914 return 0;
915}
916
917static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg,
918 struct rpc_clnt **clnt)
919{
920 msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
921}
922
923static void nfs3_nlm_alloc_call(void *data)
924{
925 struct nfs_lock_context *l_ctx = data;
926 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
927 get_nfs_open_context(l_ctx->open_context);
928 nfs_get_lock_context(l_ctx->open_context);
929 }
930}
931
932static bool nfs3_nlm_unlock_prepare(struct rpc_task *task, void *data)
933{
934 struct nfs_lock_context *l_ctx = data;
935 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags))
936 return nfs_async_iocounter_wait(task, l_ctx);
937 return false;
938
939}
940
941static void nfs3_nlm_release_call(void *data)
942{
943 struct nfs_lock_context *l_ctx = data;
944 struct nfs_open_context *ctx;
945 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
946 ctx = l_ctx->open_context;
947 nfs_put_lock_context(l_ctx);
948 put_nfs_open_context(ctx);
949 }
950}
951
952static const struct nlmclnt_operations nlmclnt_fl_close_lock_ops = {
953 .nlmclnt_alloc_call = nfs3_nlm_alloc_call,
954 .nlmclnt_unlock_prepare = nfs3_nlm_unlock_prepare,
955 .nlmclnt_release_call = nfs3_nlm_release_call,
956};
957
958static int
959nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
960{
961 struct inode *inode = file_inode(filp);
962 struct nfs_lock_context *l_ctx = NULL;
963 struct nfs_open_context *ctx = nfs_file_open_context(filp);
964 int status;
965
966 if (fl->fl_flags & FL_CLOSE) {
967 l_ctx = nfs_get_lock_context(ctx);
968 if (IS_ERR(l_ctx))
969 l_ctx = NULL;
970 else
971 set_bit(NFS_CONTEXT_UNLOCK, &ctx->flags);
972 }
973
974 status = nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, l_ctx);
975
976 if (l_ctx)
977 nfs_put_lock_context(l_ctx);
978
979 return status;
980}
981
982static int nfs3_have_delegation(struct inode *inode, fmode_t flags)
983{
984 return 0;
985}
986
987static const struct inode_operations nfs3_dir_inode_operations = {
988 .create = nfs_create,
989 .lookup = nfs_lookup,
990 .link = nfs_link,
991 .unlink = nfs_unlink,
992 .symlink = nfs_symlink,
993 .mkdir = nfs_mkdir,
994 .rmdir = nfs_rmdir,
995 .mknod = nfs_mknod,
996 .rename = nfs_rename,
997 .permission = nfs_permission,
998 .getattr = nfs_getattr,
999 .setattr = nfs_setattr,
1000#ifdef CONFIG_NFS_V3_ACL
1001 .listxattr = nfs3_listxattr,
1002 .get_acl = nfs3_get_acl,
1003 .set_acl = nfs3_set_acl,
1004#endif
1005};
1006
1007static const struct inode_operations nfs3_file_inode_operations = {
1008 .permission = nfs_permission,
1009 .getattr = nfs_getattr,
1010 .setattr = nfs_setattr,
1011#ifdef CONFIG_NFS_V3_ACL
1012 .listxattr = nfs3_listxattr,
1013 .get_acl = nfs3_get_acl,
1014 .set_acl = nfs3_set_acl,
1015#endif
1016};
1017
1018const struct nfs_rpc_ops nfs_v3_clientops = {
1019 .version = 3,
1020 .dentry_ops = &nfs_dentry_operations,
1021 .dir_inode_ops = &nfs3_dir_inode_operations,
1022 .file_inode_ops = &nfs3_file_inode_operations,
1023 .file_ops = &nfs_file_operations,
1024 .nlmclnt_ops = &nlmclnt_fl_close_lock_ops,
1025 .getroot = nfs3_proc_get_root,
1026 .submount = nfs_submount,
1027 .try_get_tree = nfs_try_get_tree,
1028 .getattr = nfs3_proc_getattr,
1029 .setattr = nfs3_proc_setattr,
1030 .lookup = nfs3_proc_lookup,
1031 .lookupp = nfs3_proc_lookupp,
1032 .access = nfs3_proc_access,
1033 .readlink = nfs3_proc_readlink,
1034 .create = nfs3_proc_create,
1035 .remove = nfs3_proc_remove,
1036 .unlink_setup = nfs3_proc_unlink_setup,
1037 .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare,
1038 .unlink_done = nfs3_proc_unlink_done,
1039 .rename_setup = nfs3_proc_rename_setup,
1040 .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare,
1041 .rename_done = nfs3_proc_rename_done,
1042 .link = nfs3_proc_link,
1043 .symlink = nfs3_proc_symlink,
1044 .mkdir = nfs3_proc_mkdir,
1045 .rmdir = nfs3_proc_rmdir,
1046 .readdir = nfs3_proc_readdir,
1047 .mknod = nfs3_proc_mknod,
1048 .statfs = nfs3_proc_statfs,
1049 .fsinfo = nfs3_proc_fsinfo,
1050 .pathconf = nfs3_proc_pathconf,
1051 .decode_dirent = nfs3_decode_dirent,
1052 .pgio_rpc_prepare = nfs3_proc_pgio_rpc_prepare,
1053 .read_setup = nfs3_proc_read_setup,
1054 .read_done = nfs3_read_done,
1055 .write_setup = nfs3_proc_write_setup,
1056 .write_done = nfs3_write_done,
1057 .commit_setup = nfs3_proc_commit_setup,
1058 .commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
1059 .commit_done = nfs3_commit_done,
1060 .lock = nfs3_proc_lock,
1061 .clear_acl_cache = forget_all_cached_acls,
1062 .close_context = nfs_close_context,
1063 .have_delegation = nfs3_have_delegation,
1064 .alloc_client = nfs_alloc_client,
1065 .init_client = nfs_init_client,
1066 .free_client = nfs_free_client,
1067 .create_server = nfs3_create_server,
1068 .clone_server = nfs3_clone_server,
1069};
1070
