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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
157nfs3_proc_lookup(struct inode *dir, struct dentry *dentry,
158 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
159 struct nfs4_label *label)
160{
161 struct nfs3_diropargs arg = {
162 .fh = NFS_FH(dir),
163 .name = dentry->d_name.name,
164 .len = dentry->d_name.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 unsigned short task_flags = 0;
177
178
179 if (nfs_lookup_is_soft_revalidate(dentry))
180 task_flags |= RPC_TASK_TIMEOUT;
181
182 res.dir_attr = nfs_alloc_fattr();
183 if (res.dir_attr == NULL)
184 return -ENOMEM;
185
186 dprintk("NFS call lookup %pd2\n", dentry);
187 nfs_fattr_init(fattr);
188 status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
189 nfs_refresh_inode(dir, res.dir_attr);
190 if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
191 msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
192 msg.rpc_argp = fhandle;
193 msg.rpc_resp = fattr;
194 status = rpc_call_sync(NFS_CLIENT(dir), &msg, task_flags);
195 }
196 nfs_free_fattr(res.dir_attr);
197 dprintk("NFS reply lookup: %d\n", status);
198 return status;
199}
200
201static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
202{
203 struct nfs3_accessargs arg = {
204 .fh = NFS_FH(inode),
205 .access = entry->mask,
206 };
207 struct nfs3_accessres res;
208 struct rpc_message msg = {
209 .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
210 .rpc_argp = &arg,
211 .rpc_resp = &res,
212 .rpc_cred = entry->cred,
213 };
214 int status = -ENOMEM;
215
216 dprintk("NFS call access\n");
217 res.fattr = nfs_alloc_fattr();
218 if (res.fattr == NULL)
219 goto out;
220
221 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
222 nfs_refresh_inode(inode, res.fattr);
223 if (status == 0)
224 nfs_access_set_mask(entry, res.access);
225 nfs_free_fattr(res.fattr);
226out:
227 dprintk("NFS reply access: %d\n", status);
228 return status;
229}
230
231static int nfs3_proc_readlink(struct inode *inode, struct page *page,
232 unsigned int pgbase, unsigned int pglen)
233{
234 struct nfs_fattr *fattr;
235 struct nfs3_readlinkargs args = {
236 .fh = NFS_FH(inode),
237 .pgbase = pgbase,
238 .pglen = pglen,
239 .pages = &page
240 };
241 struct rpc_message msg = {
242 .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
243 .rpc_argp = &args,
244 };
245 int status = -ENOMEM;
246
247 dprintk("NFS call readlink\n");
248 fattr = nfs_alloc_fattr();
249 if (fattr == NULL)
250 goto out;
251 msg.rpc_resp = fattr;
252
253 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
254 nfs_refresh_inode(inode, fattr);
255 nfs_free_fattr(fattr);
256out:
257 dprintk("NFS reply readlink: %d\n", status);
258 return status;
259}
260
261struct nfs3_createdata {
262 struct rpc_message msg;
263 union {
264 struct nfs3_createargs create;
265 struct nfs3_mkdirargs mkdir;
266 struct nfs3_symlinkargs symlink;
267 struct nfs3_mknodargs mknod;
268 } arg;
269 struct nfs3_diropres res;
270 struct nfs_fh fh;
271 struct nfs_fattr fattr;
272 struct nfs_fattr dir_attr;
273};
274
275static struct nfs3_createdata *nfs3_alloc_createdata(void)
276{
277 struct nfs3_createdata *data;
278
279 data = kzalloc(sizeof(*data), GFP_KERNEL);
280 if (data != NULL) {
281 data->msg.rpc_argp = &data->arg;
282 data->msg.rpc_resp = &data->res;
283 data->res.fh = &data->fh;
284 data->res.fattr = &data->fattr;
285 data->res.dir_attr = &data->dir_attr;
286 nfs_fattr_init(data->res.fattr);
287 nfs_fattr_init(data->res.dir_attr);
288 }
289 return data;
290}
291
292static struct dentry *
293nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
294{
295 int status;
296
297 status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
298 nfs_post_op_update_inode(dir, data->res.dir_attr);
299 if (status != 0)
300 return ERR_PTR(status);
301
302 return nfs_add_or_obtain(dentry, data->res.fh, data->res.fattr, NULL);
303}
304
305static void nfs3_free_createdata(struct nfs3_createdata *data)
306{
307 kfree(data);
308}
309
310
311
312
313static int
314nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
315 int flags)
316{
317 struct posix_acl *default_acl, *acl;
318 struct nfs3_createdata *data;
319 struct dentry *d_alias;
320 int status = -ENOMEM;
321
322 dprintk("NFS call create %pd\n", dentry);
323
324 data = nfs3_alloc_createdata();
325 if (data == NULL)
326 goto out;
327
328 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
329 data->arg.create.fh = NFS_FH(dir);
330 data->arg.create.name = dentry->d_name.name;
331 data->arg.create.len = dentry->d_name.len;
332 data->arg.create.sattr = sattr;
333
334 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
335 if (flags & O_EXCL) {
336 data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
337 data->arg.create.verifier[0] = cpu_to_be32(jiffies);
338 data->arg.create.verifier[1] = cpu_to_be32(current->pid);
339 }
340
341 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
342 if (status)
343 goto out;
344
345 for (;;) {
346 d_alias = nfs3_do_create(dir, dentry, data);
347 status = PTR_ERR_OR_ZERO(d_alias);
348
349 if (status != -ENOTSUPP)
350 break;
351
352
353 switch (data->arg.create.createmode) {
354 case NFS3_CREATE_EXCLUSIVE:
355 data->arg.create.createmode = NFS3_CREATE_GUARDED;
356 break;
357
358 case NFS3_CREATE_GUARDED:
359 data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
360 break;
361
362 case NFS3_CREATE_UNCHECKED:
363 goto out;
364 }
365 nfs_fattr_init(data->res.dir_attr);
366 nfs_fattr_init(data->res.fattr);
367 }
368
369 if (status != 0)
370 goto out_release_acls;
371
372 if (d_alias)
373 dentry = d_alias;
374
375
376
377 if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
378 dprintk("NFS call setattr (post-create)\n");
379
380 if (!(sattr->ia_valid & ATTR_ATIME_SET))
381 sattr->ia_valid |= ATTR_ATIME;
382 if (!(sattr->ia_valid & ATTR_MTIME_SET))
383 sattr->ia_valid |= ATTR_MTIME;
384
385
386
387
388 status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
389 nfs_post_op_update_inode(d_inode(dentry), data->res.fattr);
390 dprintk("NFS reply setattr (post-create): %d\n", status);
391 if (status != 0)
392 goto out_dput;
393 }
394
395 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
396
397out_dput:
398 dput(d_alias);
399out_release_acls:
400 posix_acl_release(acl);
401 posix_acl_release(default_acl);
402out:
403 nfs3_free_createdata(data);
404 dprintk("NFS reply create: %d\n", status);
405 return status;
406}
407
408static int
409nfs3_proc_remove(struct inode *dir, struct dentry *dentry)
410{
411 struct nfs_removeargs arg = {
412 .fh = NFS_FH(dir),
413 .name = dentry->d_name,
414 };
415 struct nfs_removeres res;
416 struct rpc_message msg = {
417 .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
418 .rpc_argp = &arg,
419 .rpc_resp = &res,
420 };
421 int status = -ENOMEM;
422
423 dprintk("NFS call remove %pd2\n", dentry);
424 res.dir_attr = nfs_alloc_fattr();
425 if (res.dir_attr == NULL)
426 goto out;
427
428 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
429 nfs_post_op_update_inode(dir, res.dir_attr);
430 nfs_free_fattr(res.dir_attr);
431out:
432 dprintk("NFS reply remove: %d\n", status);
433 return status;
434}
435
436static void
437nfs3_proc_unlink_setup(struct rpc_message *msg,
438 struct dentry *dentry,
439 struct inode *inode)
440{
441 msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
442}
443
444static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
445{
446 rpc_call_start(task);
447}
448
449static int
450nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
451{
452 struct nfs_removeres *res;
453 if (nfs3_async_handle_jukebox(task, dir))
454 return 0;
455 res = task->tk_msg.rpc_resp;
456 nfs_post_op_update_inode(dir, res->dir_attr);
457 return 1;
458}
459
460static void
461nfs3_proc_rename_setup(struct rpc_message *msg,
462 struct dentry *old_dentry,
463 struct dentry *new_dentry)
464{
465 msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
466}
467
468static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
469{
470 rpc_call_start(task);
471}
472
473static int
474nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
475 struct inode *new_dir)
476{
477 struct nfs_renameres *res;
478
479 if (nfs3_async_handle_jukebox(task, old_dir))
480 return 0;
481 res = task->tk_msg.rpc_resp;
482
483 nfs_post_op_update_inode(old_dir, res->old_fattr);
484 nfs_post_op_update_inode(new_dir, res->new_fattr);
485 return 1;
486}
487
488static int
489nfs3_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name)
490{
491 struct nfs3_linkargs arg = {
492 .fromfh = NFS_FH(inode),
493 .tofh = NFS_FH(dir),
494 .toname = name->name,
495 .tolen = name->len
496 };
497 struct nfs3_linkres res;
498 struct rpc_message msg = {
499 .rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
500 .rpc_argp = &arg,
501 .rpc_resp = &res,
502 };
503 int status = -ENOMEM;
504
505 dprintk("NFS call link %s\n", name->name);
506 res.fattr = nfs_alloc_fattr();
507 res.dir_attr = nfs_alloc_fattr();
508 if (res.fattr == NULL || res.dir_attr == NULL)
509 goto out;
510
511 status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
512 nfs_post_op_update_inode(dir, res.dir_attr);
513 nfs_post_op_update_inode(inode, res.fattr);
514out:
515 nfs_free_fattr(res.dir_attr);
516 nfs_free_fattr(res.fattr);
517 dprintk("NFS reply link: %d\n", status);
518 return status;
519}
520
521static int
522nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
523 unsigned int len, struct iattr *sattr)
524{
525 struct nfs3_createdata *data;
526 struct dentry *d_alias;
527 int status = -ENOMEM;
528
529 if (len > NFS3_MAXPATHLEN)
530 return -ENAMETOOLONG;
531
532 dprintk("NFS call symlink %pd\n", dentry);
533
534 data = nfs3_alloc_createdata();
535 if (data == NULL)
536 goto out;
537 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
538 data->arg.symlink.fromfh = NFS_FH(dir);
539 data->arg.symlink.fromname = dentry->d_name.name;
540 data->arg.symlink.fromlen = dentry->d_name.len;
541 data->arg.symlink.pages = &page;
542 data->arg.symlink.pathlen = len;
543 data->arg.symlink.sattr = sattr;
544
545 d_alias = nfs3_do_create(dir, dentry, data);
546 status = PTR_ERR_OR_ZERO(d_alias);
547
548 if (status == 0)
549 dput(d_alias);
550
551 nfs3_free_createdata(data);
552out:
553 dprintk("NFS reply symlink: %d\n", status);
554 return status;
555}
556
557static int
558nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
559{
560 struct posix_acl *default_acl, *acl;
561 struct nfs3_createdata *data;
562 struct dentry *d_alias;
563 int status = -ENOMEM;
564
565 dprintk("NFS call mkdir %pd\n", dentry);
566
567 data = nfs3_alloc_createdata();
568 if (data == NULL)
569 goto out;
570
571 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
572 if (status)
573 goto out;
574
575 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
576 data->arg.mkdir.fh = NFS_FH(dir);
577 data->arg.mkdir.name = dentry->d_name.name;
578 data->arg.mkdir.len = dentry->d_name.len;
579 data->arg.mkdir.sattr = sattr;
580
581 d_alias = nfs3_do_create(dir, dentry, data);
582 status = PTR_ERR_OR_ZERO(d_alias);
583
584 if (status != 0)
585 goto out_release_acls;
586
587 if (d_alias)
588 dentry = d_alias;
589
590 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
591
592 dput(d_alias);
593out_release_acls:
594 posix_acl_release(acl);
595 posix_acl_release(default_acl);
596out:
597 nfs3_free_createdata(data);
598 dprintk("NFS reply mkdir: %d\n", status);
599 return status;
600}
601
602static int
603nfs3_proc_rmdir(struct inode *dir, const struct qstr *name)
604{
605 struct nfs_fattr *dir_attr;
606 struct nfs3_diropargs arg = {
607 .fh = NFS_FH(dir),
608 .name = name->name,
609 .len = name->len
610 };
611 struct rpc_message msg = {
612 .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
613 .rpc_argp = &arg,
614 };
615 int status = -ENOMEM;
616
617 dprintk("NFS call rmdir %s\n", name->name);
618 dir_attr = nfs_alloc_fattr();
619 if (dir_attr == NULL)
620 goto out;
621
622 msg.rpc_resp = dir_attr;
623 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
624 nfs_post_op_update_inode(dir, dir_attr);
625 nfs_free_fattr(dir_attr);
626out:
627 dprintk("NFS reply rmdir: %d\n", status);
628 return status;
629}
630
631
632
633
634
635
636
637
638
639
640static int
641nfs3_proc_readdir(struct dentry *dentry, const struct cred *cred,
642 u64 cookie, struct page **pages, unsigned int count, bool plus)
643{
644 struct inode *dir = d_inode(dentry);
645 __be32 *verf = NFS_I(dir)->cookieverf;
646 struct nfs3_readdirargs arg = {
647 .fh = NFS_FH(dir),
648 .cookie = cookie,
649 .verf = {verf[0], verf[1]},
650 .plus = plus,
651 .count = count,
652 .pages = pages
653 };
654 struct nfs3_readdirres res = {
655 .verf = verf,
656 .plus = plus
657 };
658 struct rpc_message msg = {
659 .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
660 .rpc_argp = &arg,
661 .rpc_resp = &res,
662 .rpc_cred = cred,
663 };
664 int status = -ENOMEM;
665
666 if (plus)
667 msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
668
669 dprintk("NFS call readdir%s %d\n",
670 plus? "plus" : "", (unsigned int) cookie);
671
672 res.dir_attr = nfs_alloc_fattr();
673 if (res.dir_attr == NULL)
674 goto out;
675
676 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
677
678 nfs_invalidate_atime(dir);
679 nfs_refresh_inode(dir, res.dir_attr);
680
681 nfs_free_fattr(res.dir_attr);
682out:
683 dprintk("NFS reply readdir%s: %d\n",
684 plus? "plus" : "", status);
685 return status;
686}
687
688static int
689nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
690 dev_t rdev)
691{
692 struct posix_acl *default_acl, *acl;
693 struct nfs3_createdata *data;
694 struct dentry *d_alias;
695 int status = -ENOMEM;
696
697 dprintk("NFS call mknod %pd %u:%u\n", dentry,
698 MAJOR(rdev), MINOR(rdev));
699
700 data = nfs3_alloc_createdata();
701 if (data == NULL)
702 goto out;
703
704 status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
705 if (status)
706 goto out;
707
708 data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
709 data->arg.mknod.fh = NFS_FH(dir);
710 data->arg.mknod.name = dentry->d_name.name;
711 data->arg.mknod.len = dentry->d_name.len;
712 data->arg.mknod.sattr = sattr;
713 data->arg.mknod.rdev = rdev;
714
715 switch (sattr->ia_mode & S_IFMT) {
716 case S_IFBLK:
717 data->arg.mknod.type = NF3BLK;
718 break;
719 case S_IFCHR:
720 data->arg.mknod.type = NF3CHR;
721 break;
722 case S_IFIFO:
723 data->arg.mknod.type = NF3FIFO;
724 break;
725 case S_IFSOCK:
726 data->arg.mknod.type = NF3SOCK;
727 break;
728 default:
729 status = -EINVAL;
730 goto out;
731 }
732
733 d_alias = nfs3_do_create(dir, dentry, data);
734 status = PTR_ERR_OR_ZERO(d_alias);
735 if (status != 0)
736 goto out_release_acls;
737
738 if (d_alias)
739 dentry = d_alias;
740
741 status = nfs3_proc_setacls(d_inode(dentry), acl, default_acl);
742
743 dput(d_alias);
744out_release_acls:
745 posix_acl_release(acl);
746 posix_acl_release(default_acl);
747out:
748 nfs3_free_createdata(data);
749 dprintk("NFS reply mknod: %d\n", status);
750 return status;
751}
752
753static int
754nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
755 struct nfs_fsstat *stat)
756{
757 struct rpc_message msg = {
758 .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
759 .rpc_argp = fhandle,
760 .rpc_resp = stat,
761 };
762 int status;
763
764 dprintk("NFS call fsstat\n");
765 nfs_fattr_init(stat->fattr);
766 status = rpc_call_sync(server->client, &msg, 0);
767 dprintk("NFS reply fsstat: %d\n", status);
768 return status;
769}
770
771static int
772do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
773 struct nfs_fsinfo *info)
774{
775 struct rpc_message msg = {
776 .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
777 .rpc_argp = fhandle,
778 .rpc_resp = info,
779 };
780 int status;
781
782 dprintk("NFS call fsinfo\n");
783 nfs_fattr_init(info->fattr);
784 status = rpc_call_sync(client, &msg, 0);
785 dprintk("NFS reply fsinfo: %d\n", status);
786 return status;
787}
788
789
790
791
792
793static int
794nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
795 struct nfs_fsinfo *info)
796{
797 int status;
798
799 status = do_proc_fsinfo(server->client, fhandle, info);
800 if (status && server->nfs_client->cl_rpcclient != server->client)
801 status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
802 return status;
803}
804
805static int
806nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
807 struct nfs_pathconf *info)
808{
809 struct rpc_message msg = {
810 .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
811 .rpc_argp = fhandle,
812 .rpc_resp = info,
813 };
814 int status;
815
816 dprintk("NFS call pathconf\n");
817 nfs_fattr_init(info->fattr);
818 status = rpc_call_sync(server->client, &msg, 0);
819 dprintk("NFS reply pathconf: %d\n", status);
820 return status;
821}
822
823static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
824{
825 struct inode *inode = hdr->inode;
826 struct nfs_server *server = NFS_SERVER(inode);
827
828 if (hdr->pgio_done_cb != NULL)
829 return hdr->pgio_done_cb(task, hdr);
830
831 if (nfs3_async_handle_jukebox(task, inode))
832 return -EAGAIN;
833
834 if (task->tk_status >= 0 && !server->read_hdrsize)
835 cmpxchg(&server->read_hdrsize, 0, hdr->res.replen);
836
837 nfs_invalidate_atime(inode);
838 nfs_refresh_inode(inode, &hdr->fattr);
839 return 0;
840}
841
842static void nfs3_proc_read_setup(struct nfs_pgio_header *hdr,
843 struct rpc_message *msg)
844{
845 msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
846 hdr->args.replen = NFS_SERVER(hdr->inode)->read_hdrsize;
847}
848
849static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task,
850 struct nfs_pgio_header *hdr)
851{
852 rpc_call_start(task);
853 return 0;
854}
855
856static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
857{
858 struct inode *inode = hdr->inode;
859
860 if (hdr->pgio_done_cb != NULL)
861 return hdr->pgio_done_cb(task, hdr);
862
863 if (nfs3_async_handle_jukebox(task, inode))
864 return -EAGAIN;
865 if (task->tk_status >= 0)
866 nfs_writeback_update_inode(hdr);
867 return 0;
868}
869
870static void nfs3_proc_write_setup(struct nfs_pgio_header *hdr,
871 struct rpc_message *msg,
872 struct rpc_clnt **clnt)
873{
874 msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
875}
876
877static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
878{
879 rpc_call_start(task);
880}
881
882static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
883{
884 if (data->commit_done_cb != NULL)
885 return data->commit_done_cb(task, data);
886
887 if (nfs3_async_handle_jukebox(task, data->inode))
888 return -EAGAIN;
889 nfs_refresh_inode(data->inode, data->res.fattr);
890 return 0;
891}
892
893static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg,
894 struct rpc_clnt **clnt)
895{
896 msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
897}
898
899static void nfs3_nlm_alloc_call(void *data)
900{
901 struct nfs_lock_context *l_ctx = data;
902 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
903 get_nfs_open_context(l_ctx->open_context);
904 nfs_get_lock_context(l_ctx->open_context);
905 }
906}
907
908static bool nfs3_nlm_unlock_prepare(struct rpc_task *task, void *data)
909{
910 struct nfs_lock_context *l_ctx = data;
911 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags))
912 return nfs_async_iocounter_wait(task, l_ctx);
913 return false;
914
915}
916
917static void nfs3_nlm_release_call(void *data)
918{
919 struct nfs_lock_context *l_ctx = data;
920 struct nfs_open_context *ctx;
921 if (l_ctx && test_bit(NFS_CONTEXT_UNLOCK, &l_ctx->open_context->flags)) {
922 ctx = l_ctx->open_context;
923 nfs_put_lock_context(l_ctx);
924 put_nfs_open_context(ctx);
925 }
926}
927
928static const struct nlmclnt_operations nlmclnt_fl_close_lock_ops = {
929 .nlmclnt_alloc_call = nfs3_nlm_alloc_call,
930 .nlmclnt_unlock_prepare = nfs3_nlm_unlock_prepare,
931 .nlmclnt_release_call = nfs3_nlm_release_call,
932};
933
934static int
935nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
936{
937 struct inode *inode = file_inode(filp);
938 struct nfs_lock_context *l_ctx = NULL;
939 struct nfs_open_context *ctx = nfs_file_open_context(filp);
940 int status;
941
942 if (fl->fl_flags & FL_CLOSE) {
943 l_ctx = nfs_get_lock_context(ctx);
944 if (IS_ERR(l_ctx))
945 l_ctx = NULL;
946 else
947 set_bit(NFS_CONTEXT_UNLOCK, &ctx->flags);
948 }
949
950 status = nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl, l_ctx);
951
952 if (l_ctx)
953 nfs_put_lock_context(l_ctx);
954
955 return status;
956}
957
958static int nfs3_have_delegation(struct inode *inode, fmode_t flags)
959{
960 return 0;
961}
962
963static const struct inode_operations nfs3_dir_inode_operations = {
964 .create = nfs_create,
965 .lookup = nfs_lookup,
966 .link = nfs_link,
967 .unlink = nfs_unlink,
968 .symlink = nfs_symlink,
969 .mkdir = nfs_mkdir,
970 .rmdir = nfs_rmdir,
971 .mknod = nfs_mknod,
972 .rename = nfs_rename,
973 .permission = nfs_permission,
974 .getattr = nfs_getattr,
975 .setattr = nfs_setattr,
976#ifdef CONFIG_NFS_V3_ACL
977 .listxattr = nfs3_listxattr,
978 .get_acl = nfs3_get_acl,
979 .set_acl = nfs3_set_acl,
980#endif
981};
982
983static const struct inode_operations nfs3_file_inode_operations = {
984 .permission = nfs_permission,
985 .getattr = nfs_getattr,
986 .setattr = nfs_setattr,
987#ifdef CONFIG_NFS_V3_ACL
988 .listxattr = nfs3_listxattr,
989 .get_acl = nfs3_get_acl,
990 .set_acl = nfs3_set_acl,
991#endif
992};
993
994const struct nfs_rpc_ops nfs_v3_clientops = {
995 .version = 3,
996 .dentry_ops = &nfs_dentry_operations,
997 .dir_inode_ops = &nfs3_dir_inode_operations,
998 .file_inode_ops = &nfs3_file_inode_operations,
999 .file_ops = &nfs_file_operations,
1000 .nlmclnt_ops = &nlmclnt_fl_close_lock_ops,
1001 .getroot = nfs3_proc_get_root,
1002 .submount = nfs_submount,
1003 .try_get_tree = nfs_try_get_tree,
1004 .getattr = nfs3_proc_getattr,
1005 .setattr = nfs3_proc_setattr,
1006 .lookup = nfs3_proc_lookup,
1007 .access = nfs3_proc_access,
1008 .readlink = nfs3_proc_readlink,
1009 .create = nfs3_proc_create,
1010 .remove = nfs3_proc_remove,
1011 .unlink_setup = nfs3_proc_unlink_setup,
1012 .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare,
1013 .unlink_done = nfs3_proc_unlink_done,
1014 .rename_setup = nfs3_proc_rename_setup,
1015 .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare,
1016 .rename_done = nfs3_proc_rename_done,
1017 .link = nfs3_proc_link,
1018 .symlink = nfs3_proc_symlink,
1019 .mkdir = nfs3_proc_mkdir,
1020 .rmdir = nfs3_proc_rmdir,
1021 .readdir = nfs3_proc_readdir,
1022 .mknod = nfs3_proc_mknod,
1023 .statfs = nfs3_proc_statfs,
1024 .fsinfo = nfs3_proc_fsinfo,
1025 .pathconf = nfs3_proc_pathconf,
1026 .decode_dirent = nfs3_decode_dirent,
1027 .pgio_rpc_prepare = nfs3_proc_pgio_rpc_prepare,
1028 .read_setup = nfs3_proc_read_setup,
1029 .read_done = nfs3_read_done,
1030 .write_setup = nfs3_proc_write_setup,
1031 .write_done = nfs3_write_done,
1032 .commit_setup = nfs3_proc_commit_setup,
1033 .commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
1034 .commit_done = nfs3_commit_done,
1035 .lock = nfs3_proc_lock,
1036 .clear_acl_cache = forget_all_cached_acls,
1037 .close_context = nfs_close_context,
1038 .have_delegation = nfs3_have_delegation,
1039 .alloc_client = nfs_alloc_client,
1040 .init_client = nfs_init_client,
1041 .free_client = nfs_free_client,
1042 .create_server = nfs3_create_server,
1043 .clone_server = nfs3_clone_server,
1044};
1045
