blob: a48a003242c006c94f8823fdc081d3c03289289e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/nfs/proc.c
3 *
4 * Copyright (C) 1992, 1993, 1994 Rick Sladkey
5 *
6 * OS-independent nfs remote procedure call functions
7 *
8 * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers
9 * so at last we can have decent(ish) throughput off a
10 * Sun server.
11 *
12 * Coding optimized and cleaned up by Florian La Roche.
13 * Note: Error returns are optimized for NFS_OK, which isn't translated via
14 * nfs_stat_to_errno(), but happens to be already the right return code.
15 *
16 * Also, the code currently doesn't check the size of the packet, when
17 * it decodes the packet.
18 *
19 * Feel free to fix it and mail me the diffs if it worries you.
20 *
21 * Completely rewritten to support the new RPC call interface;
22 * rewrote and moved the entire XDR stuff to xdr.c
23 * --Olaf Kirch June 1996
24 *
25 * The code below initializes all auto variables explicitly, otherwise
26 * it will fail to work as a module (gcc generates a memset call for an
27 * incomplete struct).
28 */
29
30#include <linux/types.h>
31#include <linux/param.h>
32#include <linux/slab.h>
33#include <linux/time.h>
34#include <linux/mm.h>
35#include <linux/utsname.h>
36#include <linux/errno.h>
37#include <linux/string.h>
38#include <linux/in.h>
39#include <linux/pagemap.h>
40#include <linux/sunrpc/clnt.h>
41#include <linux/nfs.h>
42#include <linux/nfs2.h>
43#include <linux/nfs_fs.h>
44#include <linux/nfs_page.h>
45#include <linux/lockd/bind.h>
46#include <linux/smp_lock.h>
47
48#define NFSDBG_FACILITY NFSDBG_PROC
49
50extern struct rpc_procinfo nfs_procedures[];
51
52/*
53 * Bare-bones access to getattr: this is for nfs_read_super.
54 */
55static int
56nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
57 struct nfs_fsinfo *info)
58{
59 struct nfs_fattr *fattr = info->fattr;
60 struct nfs2_fsstat fsinfo;
61 int status;
62
63 dprintk("%s: call getattr\n", __FUNCTION__);
Trond Myklebust0e574af2005-10-27 22:12:38 -040064 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 status = rpc_call(server->client_sys, NFSPROC_GETATTR, fhandle, fattr, 0);
66 dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
67 if (status)
68 return status;
69 dprintk("%s: call statfs\n", __FUNCTION__);
70 status = rpc_call(server->client_sys, NFSPROC_STATFS, fhandle, &fsinfo, 0);
71 dprintk("%s: reply statfs: %d\n", __FUNCTION__, status);
72 if (status)
73 return status;
74 info->rtmax = NFS_MAXDATA;
75 info->rtpref = fsinfo.tsize;
76 info->rtmult = fsinfo.bsize;
77 info->wtmax = NFS_MAXDATA;
78 info->wtpref = fsinfo.tsize;
79 info->wtmult = fsinfo.bsize;
80 info->dtpref = fsinfo.tsize;
81 info->maxfilesize = 0x7FFFFFFF;
82 info->lease_time = 0;
83 return 0;
84}
85
86/*
87 * One function for each procedure in the NFS protocol.
88 */
89static int
90nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
91 struct nfs_fattr *fattr)
92{
93 int status;
94
95 dprintk("NFS call getattr\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -040096 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 status = rpc_call(server->client, NFSPROC_GETATTR,
98 fhandle, fattr, 0);
99 dprintk("NFS reply getattr: %d\n", status);
100 return status;
101}
102
103static int
104nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
105 struct iattr *sattr)
106{
107 struct inode *inode = dentry->d_inode;
108 struct nfs_sattrargs arg = {
109 .fh = NFS_FH(inode),
110 .sattr = sattr
111 };
112 int status;
113
114 dprintk("NFS call setattr\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400115 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 status = rpc_call(NFS_CLIENT(inode), NFSPROC_SETATTR, &arg, fattr, 0);
Trond Myklebust65e43082005-08-16 11:49:44 -0400117 if (status == 0)
118 nfs_setattr_update_inode(inode, sattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 dprintk("NFS reply setattr: %d\n", status);
120 return status;
121}
122
123static int
124nfs_proc_lookup(struct inode *dir, struct qstr *name,
125 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
126{
127 struct nfs_diropargs arg = {
128 .fh = NFS_FH(dir),
129 .name = name->name,
130 .len = name->len
131 };
132 struct nfs_diropok res = {
133 .fh = fhandle,
134 .fattr = fattr
135 };
136 int status;
137
138 dprintk("NFS call lookup %s\n", name->name);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400139 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 status = rpc_call(NFS_CLIENT(dir), NFSPROC_LOOKUP, &arg, &res, 0);
141 dprintk("NFS reply lookup: %d\n", status);
142 return status;
143}
144
145static int nfs_proc_readlink(struct inode *inode, struct page *page,
146 unsigned int pgbase, unsigned int pglen)
147{
148 struct nfs_readlinkargs args = {
149 .fh = NFS_FH(inode),
150 .pgbase = pgbase,
151 .pglen = pglen,
152 .pages = &page
153 };
154 int status;
155
156 dprintk("NFS call readlink\n");
157 status = rpc_call(NFS_CLIENT(inode), NFSPROC_READLINK, &args, NULL, 0);
158 dprintk("NFS reply readlink: %d\n", status);
159 return status;
160}
161
162static int nfs_proc_read(struct nfs_read_data *rdata)
163{
164 int flags = rdata->flags;
165 struct inode * inode = rdata->inode;
166 struct nfs_fattr * fattr = rdata->res.fattr;
167 struct rpc_message msg = {
168 .rpc_proc = &nfs_procedures[NFSPROC_READ],
169 .rpc_argp = &rdata->args,
170 .rpc_resp = &rdata->res,
171 .rpc_cred = rdata->cred,
172 };
173 int status;
174
175 dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
176 (long long) rdata->args.offset);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400177 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
179 if (status >= 0) {
180 nfs_refresh_inode(inode, fattr);
181 /* Emulate the eof flag, which isn't normally needed in NFSv2
182 * as it is guaranteed to always return the file attributes
183 */
184 if (rdata->args.offset + rdata->args.count >= fattr->size)
185 rdata->res.eof = 1;
186 }
187 dprintk("NFS reply read: %d\n", status);
188 return status;
189}
190
191static int nfs_proc_write(struct nfs_write_data *wdata)
192{
193 int flags = wdata->flags;
194 struct inode * inode = wdata->inode;
195 struct nfs_fattr * fattr = wdata->res.fattr;
196 struct rpc_message msg = {
197 .rpc_proc = &nfs_procedures[NFSPROC_WRITE],
198 .rpc_argp = &wdata->args,
199 .rpc_resp = &wdata->res,
200 .rpc_cred = wdata->cred,
201 };
202 int status;
203
204 dprintk("NFS call write %d @ %Ld\n", wdata->args.count,
205 (long long) wdata->args.offset);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400206 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
208 if (status >= 0) {
Trond Myklebustdecf4912005-10-27 22:12:39 -0400209 nfs_post_op_update_inode(inode, fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 wdata->res.count = wdata->args.count;
211 wdata->verf.committed = NFS_FILE_SYNC;
212 }
213 dprintk("NFS reply write: %d\n", status);
214 return status < 0? status : wdata->res.count;
215}
216
217static int
218nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
Trond Myklebust02a913a2005-10-18 14:20:17 -0700219 int flags, struct nameidata *nd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220{
221 struct nfs_fh fhandle;
222 struct nfs_fattr fattr;
223 struct nfs_createargs arg = {
224 .fh = NFS_FH(dir),
225 .name = dentry->d_name.name,
226 .len = dentry->d_name.len,
227 .sattr = sattr
228 };
229 struct nfs_diropok res = {
230 .fh = &fhandle,
231 .fattr = &fattr
232 };
233 int status;
234
Trond Myklebust0e574af2005-10-27 22:12:38 -0400235 nfs_fattr_init(&fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 dprintk("NFS call create %s\n", dentry->d_name.name);
237 status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
238 if (status == 0)
239 status = nfs_instantiate(dentry, &fhandle, &fattr);
240 dprintk("NFS reply create: %d\n", status);
241 return status;
242}
243
244/*
245 * In NFSv2, mknod is grafted onto the create call.
246 */
247static int
248nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
249 dev_t rdev)
250{
251 struct nfs_fh fhandle;
252 struct nfs_fattr fattr;
253 struct nfs_createargs arg = {
254 .fh = NFS_FH(dir),
255 .name = dentry->d_name.name,
256 .len = dentry->d_name.len,
257 .sattr = sattr
258 };
259 struct nfs_diropok res = {
260 .fh = &fhandle,
261 .fattr = &fattr
262 };
263 int status, mode;
264
265 dprintk("NFS call mknod %s\n", dentry->d_name.name);
266
267 mode = sattr->ia_mode;
268 if (S_ISFIFO(mode)) {
269 sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR;
270 sattr->ia_valid &= ~ATTR_SIZE;
271 } else if (S_ISCHR(mode) || S_ISBLK(mode)) {
272 sattr->ia_valid |= ATTR_SIZE;
273 sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */
274 }
275
Trond Myklebust0e574af2005-10-27 22:12:38 -0400276 nfs_fattr_init(&fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400278 nfs_mark_for_revalidate(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
280 if (status == -EINVAL && S_ISFIFO(mode)) {
281 sattr->ia_mode = mode;
Trond Myklebust0e574af2005-10-27 22:12:38 -0400282 nfs_fattr_init(&fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
284 }
285 if (status == 0)
286 status = nfs_instantiate(dentry, &fhandle, &fattr);
287 dprintk("NFS reply mknod: %d\n", status);
288 return status;
289}
290
291static int
292nfs_proc_remove(struct inode *dir, struct qstr *name)
293{
294 struct nfs_diropargs arg = {
295 .fh = NFS_FH(dir),
296 .name = name->name,
297 .len = name->len
298 };
299 struct rpc_message msg = {
300 .rpc_proc = &nfs_procedures[NFSPROC_REMOVE],
301 .rpc_argp = &arg,
302 .rpc_resp = NULL,
303 .rpc_cred = NULL
304 };
305 int status;
306
307 dprintk("NFS call remove %s\n", name->name);
308 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400309 nfs_mark_for_revalidate(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
311 dprintk("NFS reply remove: %d\n", status);
312 return status;
313}
314
315static int
316nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name)
317{
318 struct nfs_diropargs *arg;
319
320 arg = (struct nfs_diropargs *)kmalloc(sizeof(*arg), GFP_KERNEL);
321 if (!arg)
322 return -ENOMEM;
323 arg->fh = NFS_FH(dir->d_inode);
324 arg->name = name->name;
325 arg->len = name->len;
326 msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE];
327 msg->rpc_argp = arg;
328 return 0;
329}
330
331static int
332nfs_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
333{
334 struct rpc_message *msg = &task->tk_msg;
335
Trond Myklebustdecf4912005-10-27 22:12:39 -0400336 if (msg->rpc_argp) {
337 nfs_mark_for_revalidate(dir->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 kfree(msg->rpc_argp);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400339 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 return 0;
341}
342
343static int
344nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
345 struct inode *new_dir, struct qstr *new_name)
346{
347 struct nfs_renameargs arg = {
348 .fromfh = NFS_FH(old_dir),
349 .fromname = old_name->name,
350 .fromlen = old_name->len,
351 .tofh = NFS_FH(new_dir),
352 .toname = new_name->name,
353 .tolen = new_name->len
354 };
355 int status;
356
357 dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
358 status = rpc_call(NFS_CLIENT(old_dir), NFSPROC_RENAME, &arg, NULL, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400359 nfs_mark_for_revalidate(old_dir);
360 nfs_mark_for_revalidate(new_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 dprintk("NFS reply rename: %d\n", status);
362 return status;
363}
364
365static int
366nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
367{
368 struct nfs_linkargs arg = {
369 .fromfh = NFS_FH(inode),
370 .tofh = NFS_FH(dir),
371 .toname = name->name,
372 .tolen = name->len
373 };
374 int status;
375
376 dprintk("NFS call link %s\n", name->name);
377 status = rpc_call(NFS_CLIENT(inode), NFSPROC_LINK, &arg, NULL, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400378 nfs_mark_for_revalidate(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 dprintk("NFS reply link: %d\n", status);
380 return status;
381}
382
383static int
384nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
385 struct iattr *sattr, struct nfs_fh *fhandle,
386 struct nfs_fattr *fattr)
387{
388 struct nfs_symlinkargs arg = {
389 .fromfh = NFS_FH(dir),
390 .fromname = name->name,
391 .fromlen = name->len,
392 .topath = path->name,
393 .tolen = path->len,
394 .sattr = sattr
395 };
396 int status;
397
398 if (path->len > NFS2_MAXPATHLEN)
399 return -ENAMETOOLONG;
400 dprintk("NFS call symlink %s -> %s\n", name->name, path->name);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400401 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 fhandle->size = 0;
403 status = rpc_call(NFS_CLIENT(dir), NFSPROC_SYMLINK, &arg, NULL, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400404 nfs_mark_for_revalidate(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 dprintk("NFS reply symlink: %d\n", status);
406 return status;
407}
408
409static int
410nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
411{
412 struct nfs_fh fhandle;
413 struct nfs_fattr fattr;
414 struct nfs_createargs arg = {
415 .fh = NFS_FH(dir),
416 .name = dentry->d_name.name,
417 .len = dentry->d_name.len,
418 .sattr = sattr
419 };
420 struct nfs_diropok res = {
421 .fh = &fhandle,
422 .fattr = &fattr
423 };
424 int status;
425
426 dprintk("NFS call mkdir %s\n", dentry->d_name.name);
Trond Myklebust0e574af2005-10-27 22:12:38 -0400427 nfs_fattr_init(&fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 status = rpc_call(NFS_CLIENT(dir), NFSPROC_MKDIR, &arg, &res, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400429 nfs_mark_for_revalidate(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 if (status == 0)
431 status = nfs_instantiate(dentry, &fhandle, &fattr);
432 dprintk("NFS reply mkdir: %d\n", status);
433 return status;
434}
435
436static int
437nfs_proc_rmdir(struct inode *dir, struct qstr *name)
438{
439 struct nfs_diropargs arg = {
440 .fh = NFS_FH(dir),
441 .name = name->name,
442 .len = name->len
443 };
444 int status;
445
446 dprintk("NFS call rmdir %s\n", name->name);
447 status = rpc_call(NFS_CLIENT(dir), NFSPROC_RMDIR, &arg, NULL, 0);
Trond Myklebustdecf4912005-10-27 22:12:39 -0400448 nfs_mark_for_revalidate(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 dprintk("NFS reply rmdir: %d\n", status);
450 return status;
451}
452
453/*
454 * The READDIR implementation is somewhat hackish - we pass a temporary
455 * buffer to the encode function, which installs it in the receive
456 * the receive iovec. The decode function just parses the reply to make
457 * sure it is syntactically correct; the entries itself are decoded
458 * from nfs_readdir by calling the decode_entry function directly.
459 */
460static int
461nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
462 u64 cookie, struct page *page, unsigned int count, int plus)
463{
464 struct inode *dir = dentry->d_inode;
465 struct nfs_readdirargs arg = {
466 .fh = NFS_FH(dir),
467 .cookie = cookie,
468 .count = count,
469 .pages = &page
470 };
471 struct rpc_message msg = {
472 .rpc_proc = &nfs_procedures[NFSPROC_READDIR],
473 .rpc_argp = &arg,
474 .rpc_resp = NULL,
475 .rpc_cred = cred
476 };
477 int status;
478
479 lock_kernel();
480
481 dprintk("NFS call readdir %d\n", (unsigned int)cookie);
482 status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
483
484 dprintk("NFS reply readdir: %d\n", status);
485 unlock_kernel();
486 return status;
487}
488
489static int
490nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
491 struct nfs_fsstat *stat)
492{
493 struct nfs2_fsstat fsinfo;
494 int status;
495
496 dprintk("NFS call statfs\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400497 nfs_fattr_init(stat->fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0);
499 dprintk("NFS reply statfs: %d\n", status);
500 if (status)
501 goto out;
502 stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize;
503 stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize;
504 stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize;
505 stat->tfiles = 0;
506 stat->ffiles = 0;
507 stat->afiles = 0;
508out:
509 return status;
510}
511
512static int
513nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
514 struct nfs_fsinfo *info)
515{
516 struct nfs2_fsstat fsinfo;
517 int status;
518
519 dprintk("NFS call fsinfo\n");
Trond Myklebust0e574af2005-10-27 22:12:38 -0400520 nfs_fattr_init(info->fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0);
522 dprintk("NFS reply fsinfo: %d\n", status);
523 if (status)
524 goto out;
525 info->rtmax = NFS_MAXDATA;
526 info->rtpref = fsinfo.tsize;
527 info->rtmult = fsinfo.bsize;
528 info->wtmax = NFS_MAXDATA;
529 info->wtpref = fsinfo.tsize;
530 info->wtmult = fsinfo.bsize;
531 info->dtpref = fsinfo.tsize;
532 info->maxfilesize = 0x7FFFFFFF;
533 info->lease_time = 0;
534out:
535 return status;
536}
537
538static int
539nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
540 struct nfs_pathconf *info)
541{
542 info->max_link = 0;
543 info->max_namelen = NFS2_MAXNAMLEN;
544 return 0;
545}
546
547extern u32 * nfs_decode_dirent(u32 *, struct nfs_entry *, int);
548
549static void
550nfs_read_done(struct rpc_task *task)
551{
552 struct nfs_read_data *data = (struct nfs_read_data *) task->tk_calldata;
553
554 if (task->tk_status >= 0) {
555 nfs_refresh_inode(data->inode, data->res.fattr);
556 /* Emulate the eof flag, which isn't normally needed in NFSv2
557 * as it is guaranteed to always return the file attributes
558 */
559 if (data->args.offset + data->args.count >= data->res.fattr->size)
560 data->res.eof = 1;
561 }
562 nfs_readpage_result(task);
563}
564
565static void
566nfs_proc_read_setup(struct nfs_read_data *data)
567{
568 struct rpc_task *task = &data->task;
569 struct inode *inode = data->inode;
570 int flags;
571 struct rpc_message msg = {
572 .rpc_proc = &nfs_procedures[NFSPROC_READ],
573 .rpc_argp = &data->args,
574 .rpc_resp = &data->res,
575 .rpc_cred = data->cred,
576 };
577
578 /* N.B. Do we need to test? Never called for swapfile inode */
579 flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
580
581 /* Finalize the task. */
582 rpc_init_task(task, NFS_CLIENT(inode), nfs_read_done, flags);
583 rpc_call_setup(task, &msg, 0);
584}
585
586static void
587nfs_write_done(struct rpc_task *task)
588{
589 struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata;
590
591 if (task->tk_status >= 0)
Trond Myklebustdecf4912005-10-27 22:12:39 -0400592 nfs_post_op_update_inode(data->inode, data->res.fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 nfs_writeback_done(task);
594}
595
596static void
597nfs_proc_write_setup(struct nfs_write_data *data, int how)
598{
599 struct rpc_task *task = &data->task;
600 struct inode *inode = data->inode;
601 int flags;
602 struct rpc_message msg = {
603 .rpc_proc = &nfs_procedures[NFSPROC_WRITE],
604 .rpc_argp = &data->args,
605 .rpc_resp = &data->res,
606 .rpc_cred = data->cred,
607 };
608
609 /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
610 data->args.stable = NFS_FILE_SYNC;
611
612 /* Set the initial flags for the task. */
613 flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
614
615 /* Finalize the task. */
616 rpc_init_task(task, NFS_CLIENT(inode), nfs_write_done, flags);
617 rpc_call_setup(task, &msg, 0);
618}
619
620static void
621nfs_proc_commit_setup(struct nfs_write_data *data, int how)
622{
623 BUG();
624}
625
626static int
627nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
628{
629 return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl);
630}
631
632
633struct nfs_rpc_ops nfs_v2_clientops = {
634 .version = 2, /* protocol version */
635 .dentry_ops = &nfs_dentry_operations,
636 .dir_inode_ops = &nfs_dir_inode_operations,
J. Bruce Fields92cfc622005-06-22 17:16:22 +0000637 .file_inode_ops = &nfs_file_inode_operations,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638 .getroot = nfs_proc_get_root,
639 .getattr = nfs_proc_getattr,
640 .setattr = nfs_proc_setattr,
641 .lookup = nfs_proc_lookup,
642 .access = NULL, /* access */
643 .readlink = nfs_proc_readlink,
644 .read = nfs_proc_read,
645 .write = nfs_proc_write,
646 .commit = NULL, /* commit */
647 .create = nfs_proc_create,
648 .remove = nfs_proc_remove,
649 .unlink_setup = nfs_proc_unlink_setup,
650 .unlink_done = nfs_proc_unlink_done,
651 .rename = nfs_proc_rename,
652 .link = nfs_proc_link,
653 .symlink = nfs_proc_symlink,
654 .mkdir = nfs_proc_mkdir,
655 .rmdir = nfs_proc_rmdir,
656 .readdir = nfs_proc_readdir,
657 .mknod = nfs_proc_mknod,
658 .statfs = nfs_proc_statfs,
659 .fsinfo = nfs_proc_fsinfo,
660 .pathconf = nfs_proc_pathconf,
661 .decode_dirent = nfs_decode_dirent,
662 .read_setup = nfs_proc_read_setup,
663 .write_setup = nfs_proc_write_setup,
664 .commit_setup = nfs_proc_commit_setup,
665 .file_open = nfs_open,
666 .file_release = nfs_release,
667 .lock = nfs_proc_lock,
668};