xref: /openbmc/linux/fs/nfs/proc.c (revision d5cb9783536a41df9f9cba5b0a1d78047ed787f7)
1 /*
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 
50 extern struct rpc_procinfo nfs_procedures[];
51 
52 /*
53  * Bare-bones access to getattr: this is for nfs_read_super.
54  */
55 static int
56 nfs_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__);
64 	nfs_fattr_init(fattr);
65 	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  */
89 static int
90 nfs_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");
96 	nfs_fattr_init(fattr);
97 	status = rpc_call(server->client, NFSPROC_GETATTR,
98 				fhandle, fattr, 0);
99 	dprintk("NFS reply getattr: %d\n", status);
100 	return status;
101 }
102 
103 static int
104 nfs_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");
115 	nfs_fattr_init(fattr);
116 	status = rpc_call(NFS_CLIENT(inode), NFSPROC_SETATTR, &arg, fattr, 0);
117 	if (status == 0)
118 		nfs_setattr_update_inode(inode, sattr);
119 	dprintk("NFS reply setattr: %d\n", status);
120 	return status;
121 }
122 
123 static int
124 nfs_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);
139 	nfs_fattr_init(fattr);
140 	status = rpc_call(NFS_CLIENT(dir), NFSPROC_LOOKUP, &arg, &res, 0);
141 	dprintk("NFS reply lookup: %d\n", status);
142 	return status;
143 }
144 
145 static 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 
162 static 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);
177 	nfs_fattr_init(fattr);
178 	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 
191 static 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);
206 	nfs_fattr_init(fattr);
207 	status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags);
208 	if (status >= 0) {
209 		nfs_post_op_update_inode(inode, fattr);
210 		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 
217 static int
218 nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
219 		int flags, struct nameidata *nd)
220 {
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 
235 	nfs_fattr_init(&fattr);
236 	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  */
247 static int
248 nfs_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 
276 	nfs_fattr_init(&fattr);
277 	status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
278 	nfs_mark_for_revalidate(dir);
279 
280 	if (status == -EINVAL && S_ISFIFO(mode)) {
281 		sattr->ia_mode = mode;
282 		nfs_fattr_init(&fattr);
283 		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 
291 static int
292 nfs_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);
309 	nfs_mark_for_revalidate(dir);
310 
311 	dprintk("NFS reply remove: %d\n", status);
312 	return status;
313 }
314 
315 static int
316 nfs_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 
331 static int
332 nfs_proc_unlink_done(struct dentry *dir, struct rpc_task *task)
333 {
334 	struct rpc_message *msg = &task->tk_msg;
335 
336 	if (msg->rpc_argp) {
337 		nfs_mark_for_revalidate(dir->d_inode);
338 		kfree(msg->rpc_argp);
339 	}
340 	return 0;
341 }
342 
343 static int
344 nfs_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);
359 	nfs_mark_for_revalidate(old_dir);
360 	nfs_mark_for_revalidate(new_dir);
361 	dprintk("NFS reply rename: %d\n", status);
362 	return status;
363 }
364 
365 static int
366 nfs_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);
378 	nfs_mark_for_revalidate(dir);
379 	dprintk("NFS reply link: %d\n", status);
380 	return status;
381 }
382 
383 static int
384 nfs_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);
401 	nfs_fattr_init(fattr);
402 	fhandle->size = 0;
403 	status = rpc_call(NFS_CLIENT(dir), NFSPROC_SYMLINK, &arg, NULL, 0);
404 	nfs_mark_for_revalidate(dir);
405 	dprintk("NFS reply symlink: %d\n", status);
406 	return status;
407 }
408 
409 static int
410 nfs_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);
427 	nfs_fattr_init(&fattr);
428 	status = rpc_call(NFS_CLIENT(dir), NFSPROC_MKDIR, &arg, &res, 0);
429 	nfs_mark_for_revalidate(dir);
430 	if (status == 0)
431 		status = nfs_instantiate(dentry, &fhandle, &fattr);
432 	dprintk("NFS reply mkdir: %d\n", status);
433 	return status;
434 }
435 
436 static int
437 nfs_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);
448 	nfs_mark_for_revalidate(dir);
449 	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  */
460 static int
461 nfs_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 
489 static int
490 nfs_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");
497 	nfs_fattr_init(stat->fattr);
498 	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;
508 out:
509 	return status;
510 }
511 
512 static int
513 nfs_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");
520 	nfs_fattr_init(info->fattr);
521 	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;
534 out:
535 	return status;
536 }
537 
538 static int
539 nfs_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 
547 extern u32 * nfs_decode_dirent(u32 *, struct nfs_entry *, int);
548 
549 static void
550 nfs_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 
565 static void
566 nfs_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 
586 static void
587 nfs_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)
592 		nfs_post_op_update_inode(data->inode, data->res.fattr);
593 	nfs_writeback_done(task);
594 }
595 
596 static void
597 nfs_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 
620 static void
621 nfs_proc_commit_setup(struct nfs_write_data *data, int how)
622 {
623 	BUG();
624 }
625 
626 static int
627 nfs_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 
633 struct 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,
637 	.file_inode_ops	= &nfs_file_inode_operations,
638 	.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 };
669