1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Process version 2 NFS requests.
4 *
5 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
6 */
7
8 #include <linux/namei.h>
9
10 #include "cache.h"
11 #include "xdr.h"
12 #include "vfs.h"
13
14 #define NFSDDBG_FACILITY NFSDDBG_PROC
15
16 static __be32
nfsd_proc_null(struct svc_rqst * rqstp)17 nfsd_proc_null(struct svc_rqst *rqstp)
18 {
19 return rpc_success;
20 }
21
22 /*
23 * Get a file's attributes
24 * N.B. After this call resp->fh needs an fh_put
25 */
26 static __be32
nfsd_proc_getattr(struct svc_rqst * rqstp)27 nfsd_proc_getattr(struct svc_rqst *rqstp)
28 {
29 struct nfsd_fhandle *argp = rqstp->rq_argp;
30 struct nfsd_attrstat *resp = rqstp->rq_resp;
31
32 dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
33
34 fh_copy(&resp->fh, &argp->fh);
35 resp->status = fh_verify(rqstp, &resp->fh, 0,
36 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
37 if (resp->status != nfs_ok)
38 goto out;
39 resp->status = fh_getattr(&resp->fh, &resp->stat);
40 out:
41 return rpc_success;
42 }
43
44 /*
45 * Set a file's attributes
46 * N.B. After this call resp->fh needs an fh_put
47 */
48 static __be32
nfsd_proc_setattr(struct svc_rqst * rqstp)49 nfsd_proc_setattr(struct svc_rqst *rqstp)
50 {
51 struct nfsd_sattrargs *argp = rqstp->rq_argp;
52 struct nfsd_attrstat *resp = rqstp->rq_resp;
53 struct iattr *iap = &argp->attrs;
54 struct nfsd_attrs attrs = {
55 .na_iattr = iap,
56 };
57 struct svc_fh *fhp;
58
59 dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n",
60 SVCFH_fmt(&argp->fh),
61 argp->attrs.ia_valid, (long) argp->attrs.ia_size);
62
63 fhp = fh_copy(&resp->fh, &argp->fh);
64
65 /*
66 * NFSv2 does not differentiate between "set-[ac]time-to-now"
67 * which only requires access, and "set-[ac]time-to-X" which
68 * requires ownership.
69 * So if it looks like it might be "set both to the same time which
70 * is close to now", and if setattr_prepare fails, then we
71 * convert to "set to now" instead of "set to explicit time"
72 *
73 * We only call setattr_prepare as the last test as technically
74 * it is not an interface that we should be using.
75 */
76 #define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
77 #define MAX_TOUCH_TIME_ERROR (30*60)
78 if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET &&
79 iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) {
80 /*
81 * Looks probable.
82 *
83 * Now just make sure time is in the right ballpark.
84 * Solaris, at least, doesn't seem to care what the time
85 * request is. We require it be within 30 minutes of now.
86 */
87 time64_t delta = iap->ia_atime.tv_sec - ktime_get_real_seconds();
88
89 resp->status = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
90 if (resp->status != nfs_ok)
91 goto out;
92
93 if (delta < 0)
94 delta = -delta;
95 if (delta < MAX_TOUCH_TIME_ERROR &&
96 setattr_prepare(&nop_mnt_idmap, fhp->fh_dentry, iap) != 0) {
97 /*
98 * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME.
99 * This will cause notify_change to set these times
100 * to "now"
101 */
102 iap->ia_valid &= ~BOTH_TIME_SET;
103 }
104 }
105
106 resp->status = nfsd_setattr(rqstp, fhp, &attrs, 0, (time64_t)0);
107 if (resp->status != nfs_ok)
108 goto out;
109
110 resp->status = fh_getattr(&resp->fh, &resp->stat);
111 out:
112 return rpc_success;
113 }
114
115 /* Obsolete, replaced by MNTPROC_MNT. */
116 static __be32
nfsd_proc_root(struct svc_rqst * rqstp)117 nfsd_proc_root(struct svc_rqst *rqstp)
118 {
119 return rpc_success;
120 }
121
122 /*
123 * Look up a path name component
124 * Note: the dentry in the resp->fh may be negative if the file
125 * doesn't exist yet.
126 * N.B. After this call resp->fh needs an fh_put
127 */
128 static __be32
nfsd_proc_lookup(struct svc_rqst * rqstp)129 nfsd_proc_lookup(struct svc_rqst *rqstp)
130 {
131 struct nfsd_diropargs *argp = rqstp->rq_argp;
132 struct nfsd_diropres *resp = rqstp->rq_resp;
133
134 dprintk("nfsd: LOOKUP %s %.*s\n",
135 SVCFH_fmt(&argp->fh), argp->len, argp->name);
136
137 fh_init(&resp->fh, NFS_FHSIZE);
138 resp->status = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len,
139 &resp->fh);
140 fh_put(&argp->fh);
141 if (resp->status != nfs_ok)
142 goto out;
143
144 resp->status = fh_getattr(&resp->fh, &resp->stat);
145 out:
146 return rpc_success;
147 }
148
149 /*
150 * Read a symlink.
151 */
152 static __be32
nfsd_proc_readlink(struct svc_rqst * rqstp)153 nfsd_proc_readlink(struct svc_rqst *rqstp)
154 {
155 struct nfsd_fhandle *argp = rqstp->rq_argp;
156 struct nfsd_readlinkres *resp = rqstp->rq_resp;
157
158 dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
159
160 /* Read the symlink. */
161 resp->len = NFS_MAXPATHLEN;
162 resp->page = *(rqstp->rq_next_page++);
163 resp->status = nfsd_readlink(rqstp, &argp->fh,
164 page_address(resp->page), &resp->len);
165
166 fh_put(&argp->fh);
167 return rpc_success;
168 }
169
170 /*
171 * Read a portion of a file.
172 * N.B. After this call resp->fh needs an fh_put
173 */
174 static __be32
nfsd_proc_read(struct svc_rqst * rqstp)175 nfsd_proc_read(struct svc_rqst *rqstp)
176 {
177 struct nfsd_readargs *argp = rqstp->rq_argp;
178 struct nfsd_readres *resp = rqstp->rq_resp;
179 u32 eof;
180
181 dprintk("nfsd: READ %s %d bytes at %d\n",
182 SVCFH_fmt(&argp->fh),
183 argp->count, argp->offset);
184
185 argp->count = min_t(u32, argp->count, NFSSVC_MAXBLKSIZE_V2);
186 argp->count = min_t(u32, argp->count, rqstp->rq_res.buflen);
187
188 resp->pages = rqstp->rq_next_page;
189
190 /* Obtain buffer pointer for payload. 19 is 1 word for
191 * status, 17 words for fattr, and 1 word for the byte count.
192 */
193 svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
194
195 resp->count = argp->count;
196 fh_copy(&resp->fh, &argp->fh);
197 resp->status = nfsd_read(rqstp, &resp->fh, argp->offset,
198 &resp->count, &eof);
199 if (resp->status == nfs_ok)
200 resp->status = fh_getattr(&resp->fh, &resp->stat);
201 else if (resp->status == nfserr_jukebox)
202 set_bit(RQ_DROPME, &rqstp->rq_flags);
203 return rpc_success;
204 }
205
206 /* Reserved */
207 static __be32
nfsd_proc_writecache(struct svc_rqst * rqstp)208 nfsd_proc_writecache(struct svc_rqst *rqstp)
209 {
210 return rpc_success;
211 }
212
213 /*
214 * Write data to a file
215 * N.B. After this call resp->fh needs an fh_put
216 */
217 static __be32
nfsd_proc_write(struct svc_rqst * rqstp)218 nfsd_proc_write(struct svc_rqst *rqstp)
219 {
220 struct nfsd_writeargs *argp = rqstp->rq_argp;
221 struct nfsd_attrstat *resp = rqstp->rq_resp;
222 unsigned long cnt = argp->len;
223 unsigned int nvecs;
224
225 dprintk("nfsd: WRITE %s %u bytes at %d\n",
226 SVCFH_fmt(&argp->fh),
227 argp->len, argp->offset);
228
229 nvecs = svc_fill_write_vector(rqstp, &argp->payload);
230
231 resp->status = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh),
232 argp->offset, rqstp->rq_vec, nvecs,
233 &cnt, NFS_DATA_SYNC, NULL);
234 if (resp->status == nfs_ok)
235 resp->status = fh_getattr(&resp->fh, &resp->stat);
236 else if (resp->status == nfserr_jukebox)
237 set_bit(RQ_DROPME, &rqstp->rq_flags);
238 return rpc_success;
239 }
240
241 /*
242 * CREATE processing is complicated. The keyword here is `overloaded.'
243 * The parent directory is kept locked between the check for existence
244 * and the actual create() call in compliance with VFS protocols.
245 * N.B. After this call _both_ argp->fh and resp->fh need an fh_put
246 */
247 static __be32
nfsd_proc_create(struct svc_rqst * rqstp)248 nfsd_proc_create(struct svc_rqst *rqstp)
249 {
250 struct nfsd_createargs *argp = rqstp->rq_argp;
251 struct nfsd_diropres *resp = rqstp->rq_resp;
252 svc_fh *dirfhp = &argp->fh;
253 svc_fh *newfhp = &resp->fh;
254 struct iattr *attr = &argp->attrs;
255 struct nfsd_attrs attrs = {
256 .na_iattr = attr,
257 };
258 struct inode *inode;
259 struct dentry *dchild;
260 int type, mode;
261 int hosterr;
262 dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size);
263
264 dprintk("nfsd: CREATE %s %.*s\n",
265 SVCFH_fmt(dirfhp), argp->len, argp->name);
266
267 /* First verify the parent file handle */
268 resp->status = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
269 if (resp->status != nfs_ok)
270 goto done; /* must fh_put dirfhp even on error */
271
272 /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */
273
274 resp->status = nfserr_exist;
275 if (isdotent(argp->name, argp->len))
276 goto done;
277 hosterr = fh_want_write(dirfhp);
278 if (hosterr) {
279 resp->status = nfserrno(hosterr);
280 goto done;
281 }
282
283 inode_lock_nested(dirfhp->fh_dentry->d_inode, I_MUTEX_PARENT);
284 dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len);
285 if (IS_ERR(dchild)) {
286 resp->status = nfserrno(PTR_ERR(dchild));
287 goto out_unlock;
288 }
289 fh_init(newfhp, NFS_FHSIZE);
290 resp->status = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
291 if (!resp->status && d_really_is_negative(dchild))
292 resp->status = nfserr_noent;
293 dput(dchild);
294 if (resp->status) {
295 if (resp->status != nfserr_noent)
296 goto out_unlock;
297 /*
298 * If the new file handle wasn't verified, we can't tell
299 * whether the file exists or not. Time to bail ...
300 */
301 resp->status = nfserr_acces;
302 if (!newfhp->fh_dentry) {
303 printk(KERN_WARNING
304 "nfsd_proc_create: file handle not verified\n");
305 goto out_unlock;
306 }
307 }
308
309 inode = d_inode(newfhp->fh_dentry);
310
311 /* Unfudge the mode bits */
312 if (attr->ia_valid & ATTR_MODE) {
313 type = attr->ia_mode & S_IFMT;
314 mode = attr->ia_mode & ~S_IFMT;
315 if (!type) {
316 /* no type, so if target exists, assume same as that,
317 * else assume a file */
318 if (inode) {
319 type = inode->i_mode & S_IFMT;
320 switch(type) {
321 case S_IFCHR:
322 case S_IFBLK:
323 /* reserve rdev for later checking */
324 rdev = inode->i_rdev;
325 attr->ia_valid |= ATTR_SIZE;
326
327 fallthrough;
328 case S_IFIFO:
329 /* this is probably a permission check..
330 * at least IRIX implements perm checking on
331 * echo thing > device-special-file-or-pipe
332 * by doing a CREATE with type==0
333 */
334 resp->status = nfsd_permission(rqstp,
335 newfhp->fh_export,
336 newfhp->fh_dentry,
337 NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS);
338 if (resp->status && resp->status != nfserr_rofs)
339 goto out_unlock;
340 }
341 } else
342 type = S_IFREG;
343 }
344 } else if (inode) {
345 type = inode->i_mode & S_IFMT;
346 mode = inode->i_mode & ~S_IFMT;
347 } else {
348 type = S_IFREG;
349 mode = 0; /* ??? */
350 }
351
352 attr->ia_valid |= ATTR_MODE;
353 attr->ia_mode = mode;
354
355 /* Special treatment for non-regular files according to the
356 * gospel of sun micro
357 */
358 if (type != S_IFREG) {
359 if (type != S_IFBLK && type != S_IFCHR) {
360 rdev = 0;
361 } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) {
362 /* If you think you've seen the worst, grok this. */
363 type = S_IFIFO;
364 } else {
365 /* Okay, char or block special */
366 if (!rdev)
367 rdev = wanted;
368 }
369
370 /* we've used the SIZE information, so discard it */
371 attr->ia_valid &= ~ATTR_SIZE;
372
373 /* Make sure the type and device matches */
374 resp->status = nfserr_exist;
375 if (inode && inode_wrong_type(inode, type))
376 goto out_unlock;
377 }
378
379 resp->status = nfs_ok;
380 if (!inode) {
381 /* File doesn't exist. Create it and set attrs */
382 resp->status = nfsd_create_locked(rqstp, dirfhp, &attrs, type,
383 rdev, newfhp);
384 } else if (type == S_IFREG) {
385 dprintk("nfsd: existing %s, valid=%x, size=%ld\n",
386 argp->name, attr->ia_valid, (long) attr->ia_size);
387 /* File already exists. We ignore all attributes except
388 * size, so that creat() behaves exactly like
389 * open(..., O_CREAT|O_TRUNC|O_WRONLY).
390 */
391 attr->ia_valid &= ATTR_SIZE;
392 if (attr->ia_valid)
393 resp->status = nfsd_setattr(rqstp, newfhp, &attrs, 0,
394 (time64_t)0);
395 }
396
397 out_unlock:
398 inode_unlock(dirfhp->fh_dentry->d_inode);
399 fh_drop_write(dirfhp);
400 done:
401 fh_put(dirfhp);
402 if (resp->status != nfs_ok)
403 goto out;
404 resp->status = fh_getattr(&resp->fh, &resp->stat);
405 out:
406 return rpc_success;
407 }
408
409 static __be32
nfsd_proc_remove(struct svc_rqst * rqstp)410 nfsd_proc_remove(struct svc_rqst *rqstp)
411 {
412 struct nfsd_diropargs *argp = rqstp->rq_argp;
413 struct nfsd_stat *resp = rqstp->rq_resp;
414
415 dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh),
416 argp->len, argp->name);
417
418 /* Unlink. -SIFDIR means file must not be a directory */
419 resp->status = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR,
420 argp->name, argp->len);
421 fh_put(&argp->fh);
422 return rpc_success;
423 }
424
425 static __be32
nfsd_proc_rename(struct svc_rqst * rqstp)426 nfsd_proc_rename(struct svc_rqst *rqstp)
427 {
428 struct nfsd_renameargs *argp = rqstp->rq_argp;
429 struct nfsd_stat *resp = rqstp->rq_resp;
430
431 dprintk("nfsd: RENAME %s %.*s -> \n",
432 SVCFH_fmt(&argp->ffh), argp->flen, argp->fname);
433 dprintk("nfsd: -> %s %.*s\n",
434 SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname);
435
436 resp->status = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen,
437 &argp->tfh, argp->tname, argp->tlen);
438 fh_put(&argp->ffh);
439 fh_put(&argp->tfh);
440 return rpc_success;
441 }
442
443 static __be32
nfsd_proc_link(struct svc_rqst * rqstp)444 nfsd_proc_link(struct svc_rqst *rqstp)
445 {
446 struct nfsd_linkargs *argp = rqstp->rq_argp;
447 struct nfsd_stat *resp = rqstp->rq_resp;
448
449 dprintk("nfsd: LINK %s ->\n",
450 SVCFH_fmt(&argp->ffh));
451 dprintk("nfsd: %s %.*s\n",
452 SVCFH_fmt(&argp->tfh),
453 argp->tlen,
454 argp->tname);
455
456 resp->status = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen,
457 &argp->ffh);
458 fh_put(&argp->ffh);
459 fh_put(&argp->tfh);
460 return rpc_success;
461 }
462
463 static __be32
nfsd_proc_symlink(struct svc_rqst * rqstp)464 nfsd_proc_symlink(struct svc_rqst *rqstp)
465 {
466 struct nfsd_symlinkargs *argp = rqstp->rq_argp;
467 struct nfsd_stat *resp = rqstp->rq_resp;
468 struct nfsd_attrs attrs = {
469 .na_iattr = &argp->attrs,
470 };
471 struct svc_fh newfh;
472
473 if (argp->tlen > NFS_MAXPATHLEN) {
474 resp->status = nfserr_nametoolong;
475 goto out;
476 }
477
478 argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first,
479 page_address(rqstp->rq_arg.pages[0]),
480 argp->tlen);
481 if (IS_ERR(argp->tname)) {
482 resp->status = nfserrno(PTR_ERR(argp->tname));
483 goto out;
484 }
485
486 dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n",
487 SVCFH_fmt(&argp->ffh), argp->flen, argp->fname,
488 argp->tlen, argp->tname);
489
490 fh_init(&newfh, NFS_FHSIZE);
491 resp->status = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen,
492 argp->tname, &attrs, &newfh);
493
494 kfree(argp->tname);
495 fh_put(&argp->ffh);
496 fh_put(&newfh);
497 out:
498 return rpc_success;
499 }
500
501 /*
502 * Make directory. This operation is not idempotent.
503 * N.B. After this call resp->fh needs an fh_put
504 */
505 static __be32
nfsd_proc_mkdir(struct svc_rqst * rqstp)506 nfsd_proc_mkdir(struct svc_rqst *rqstp)
507 {
508 struct nfsd_createargs *argp = rqstp->rq_argp;
509 struct nfsd_diropres *resp = rqstp->rq_resp;
510 struct nfsd_attrs attrs = {
511 .na_iattr = &argp->attrs,
512 };
513
514 dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
515
516 if (resp->fh.fh_dentry) {
517 printk(KERN_WARNING
518 "nfsd_proc_mkdir: response already verified??\n");
519 }
520
521 argp->attrs.ia_valid &= ~ATTR_SIZE;
522 fh_init(&resp->fh, NFS_FHSIZE);
523 resp->status = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
524 &attrs, S_IFDIR, 0, &resp->fh);
525 fh_put(&argp->fh);
526 if (resp->status != nfs_ok)
527 goto out;
528
529 resp->status = fh_getattr(&resp->fh, &resp->stat);
530 out:
531 return rpc_success;
532 }
533
534 /*
535 * Remove a directory
536 */
537 static __be32
nfsd_proc_rmdir(struct svc_rqst * rqstp)538 nfsd_proc_rmdir(struct svc_rqst *rqstp)
539 {
540 struct nfsd_diropargs *argp = rqstp->rq_argp;
541 struct nfsd_stat *resp = rqstp->rq_resp;
542
543 dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
544
545 resp->status = nfsd_unlink(rqstp, &argp->fh, S_IFDIR,
546 argp->name, argp->len);
547 fh_put(&argp->fh);
548 return rpc_success;
549 }
550
nfsd_init_dirlist_pages(struct svc_rqst * rqstp,struct nfsd_readdirres * resp,u32 count)551 static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp,
552 struct nfsd_readdirres *resp,
553 u32 count)
554 {
555 struct xdr_buf *buf = &resp->dirlist;
556 struct xdr_stream *xdr = &resp->xdr;
557
558 memset(buf, 0, sizeof(*buf));
559
560 /* Reserve room for the NULL ptr & eof flag (-2 words) */
561 buf->buflen = clamp(count, (u32)(XDR_UNIT * 2), (u32)PAGE_SIZE);
562 buf->buflen -= XDR_UNIT * 2;
563 buf->pages = rqstp->rq_next_page;
564 rqstp->rq_next_page++;
565
566 xdr_init_encode_pages(xdr, buf, buf->pages, NULL);
567 }
568
569 /*
570 * Read a portion of a directory.
571 */
572 static __be32
nfsd_proc_readdir(struct svc_rqst * rqstp)573 nfsd_proc_readdir(struct svc_rqst *rqstp)
574 {
575 struct nfsd_readdirargs *argp = rqstp->rq_argp;
576 struct nfsd_readdirres *resp = rqstp->rq_resp;
577 loff_t offset;
578
579 dprintk("nfsd: READDIR %s %d bytes at %d\n",
580 SVCFH_fmt(&argp->fh),
581 argp->count, argp->cookie);
582
583 nfsd_init_dirlist_pages(rqstp, resp, argp->count);
584
585 resp->common.err = nfs_ok;
586 resp->cookie_offset = 0;
587 offset = argp->cookie;
588 resp->status = nfsd_readdir(rqstp, &argp->fh, &offset,
589 &resp->common, nfssvc_encode_entry);
590 nfssvc_encode_nfscookie(resp, offset);
591
592 fh_put(&argp->fh);
593 return rpc_success;
594 }
595
596 /*
597 * Get file system info
598 */
599 static __be32
nfsd_proc_statfs(struct svc_rqst * rqstp)600 nfsd_proc_statfs(struct svc_rqst *rqstp)
601 {
602 struct nfsd_fhandle *argp = rqstp->rq_argp;
603 struct nfsd_statfsres *resp = rqstp->rq_resp;
604
605 dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh));
606
607 resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
608 NFSD_MAY_BYPASS_GSS_ON_ROOT);
609 fh_put(&argp->fh);
610 return rpc_success;
611 }
612
613 /*
614 * NFSv2 Server procedures.
615 * Only the results of non-idempotent operations are cached.
616 */
617
618 #define ST 1 /* status */
619 #define FH 8 /* filehandle */
620 #define AT 18 /* attributes */
621
622 static const struct svc_procedure nfsd_procedures2[18] = {
623 [NFSPROC_NULL] = {
624 .pc_func = nfsd_proc_null,
625 .pc_decode = nfssvc_decode_voidarg,
626 .pc_encode = nfssvc_encode_voidres,
627 .pc_argsize = sizeof(struct nfsd_voidargs),
628 .pc_argzero = sizeof(struct nfsd_voidargs),
629 .pc_ressize = sizeof(struct nfsd_voidres),
630 .pc_cachetype = RC_NOCACHE,
631 .pc_xdrressize = 0,
632 .pc_name = "NULL",
633 },
634 [NFSPROC_GETATTR] = {
635 .pc_func = nfsd_proc_getattr,
636 .pc_decode = nfssvc_decode_fhandleargs,
637 .pc_encode = nfssvc_encode_attrstatres,
638 .pc_release = nfssvc_release_attrstat,
639 .pc_argsize = sizeof(struct nfsd_fhandle),
640 .pc_argzero = sizeof(struct nfsd_fhandle),
641 .pc_ressize = sizeof(struct nfsd_attrstat),
642 .pc_cachetype = RC_NOCACHE,
643 .pc_xdrressize = ST+AT,
644 .pc_name = "GETATTR",
645 },
646 [NFSPROC_SETATTR] = {
647 .pc_func = nfsd_proc_setattr,
648 .pc_decode = nfssvc_decode_sattrargs,
649 .pc_encode = nfssvc_encode_attrstatres,
650 .pc_release = nfssvc_release_attrstat,
651 .pc_argsize = sizeof(struct nfsd_sattrargs),
652 .pc_argzero = sizeof(struct nfsd_sattrargs),
653 .pc_ressize = sizeof(struct nfsd_attrstat),
654 .pc_cachetype = RC_REPLBUFF,
655 .pc_xdrressize = ST+AT,
656 .pc_name = "SETATTR",
657 },
658 [NFSPROC_ROOT] = {
659 .pc_func = nfsd_proc_root,
660 .pc_decode = nfssvc_decode_voidarg,
661 .pc_encode = nfssvc_encode_voidres,
662 .pc_argsize = sizeof(struct nfsd_voidargs),
663 .pc_argzero = sizeof(struct nfsd_voidargs),
664 .pc_ressize = sizeof(struct nfsd_voidres),
665 .pc_cachetype = RC_NOCACHE,
666 .pc_xdrressize = 0,
667 .pc_name = "ROOT",
668 },
669 [NFSPROC_LOOKUP] = {
670 .pc_func = nfsd_proc_lookup,
671 .pc_decode = nfssvc_decode_diropargs,
672 .pc_encode = nfssvc_encode_diropres,
673 .pc_release = nfssvc_release_diropres,
674 .pc_argsize = sizeof(struct nfsd_diropargs),
675 .pc_argzero = sizeof(struct nfsd_diropargs),
676 .pc_ressize = sizeof(struct nfsd_diropres),
677 .pc_cachetype = RC_NOCACHE,
678 .pc_xdrressize = ST+FH+AT,
679 .pc_name = "LOOKUP",
680 },
681 [NFSPROC_READLINK] = {
682 .pc_func = nfsd_proc_readlink,
683 .pc_decode = nfssvc_decode_fhandleargs,
684 .pc_encode = nfssvc_encode_readlinkres,
685 .pc_argsize = sizeof(struct nfsd_fhandle),
686 .pc_argzero = sizeof(struct nfsd_fhandle),
687 .pc_ressize = sizeof(struct nfsd_readlinkres),
688 .pc_cachetype = RC_NOCACHE,
689 .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
690 .pc_name = "READLINK",
691 },
692 [NFSPROC_READ] = {
693 .pc_func = nfsd_proc_read,
694 .pc_decode = nfssvc_decode_readargs,
695 .pc_encode = nfssvc_encode_readres,
696 .pc_release = nfssvc_release_readres,
697 .pc_argsize = sizeof(struct nfsd_readargs),
698 .pc_argzero = sizeof(struct nfsd_readargs),
699 .pc_ressize = sizeof(struct nfsd_readres),
700 .pc_cachetype = RC_NOCACHE,
701 .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
702 .pc_name = "READ",
703 },
704 [NFSPROC_WRITECACHE] = {
705 .pc_func = nfsd_proc_writecache,
706 .pc_decode = nfssvc_decode_voidarg,
707 .pc_encode = nfssvc_encode_voidres,
708 .pc_argsize = sizeof(struct nfsd_voidargs),
709 .pc_argzero = sizeof(struct nfsd_voidargs),
710 .pc_ressize = sizeof(struct nfsd_voidres),
711 .pc_cachetype = RC_NOCACHE,
712 .pc_xdrressize = 0,
713 .pc_name = "WRITECACHE",
714 },
715 [NFSPROC_WRITE] = {
716 .pc_func = nfsd_proc_write,
717 .pc_decode = nfssvc_decode_writeargs,
718 .pc_encode = nfssvc_encode_attrstatres,
719 .pc_release = nfssvc_release_attrstat,
720 .pc_argsize = sizeof(struct nfsd_writeargs),
721 .pc_argzero = sizeof(struct nfsd_writeargs),
722 .pc_ressize = sizeof(struct nfsd_attrstat),
723 .pc_cachetype = RC_REPLBUFF,
724 .pc_xdrressize = ST+AT,
725 .pc_name = "WRITE",
726 },
727 [NFSPROC_CREATE] = {
728 .pc_func = nfsd_proc_create,
729 .pc_decode = nfssvc_decode_createargs,
730 .pc_encode = nfssvc_encode_diropres,
731 .pc_release = nfssvc_release_diropres,
732 .pc_argsize = sizeof(struct nfsd_createargs),
733 .pc_argzero = sizeof(struct nfsd_createargs),
734 .pc_ressize = sizeof(struct nfsd_diropres),
735 .pc_cachetype = RC_REPLBUFF,
736 .pc_xdrressize = ST+FH+AT,
737 .pc_name = "CREATE",
738 },
739 [NFSPROC_REMOVE] = {
740 .pc_func = nfsd_proc_remove,
741 .pc_decode = nfssvc_decode_diropargs,
742 .pc_encode = nfssvc_encode_statres,
743 .pc_argsize = sizeof(struct nfsd_diropargs),
744 .pc_argzero = sizeof(struct nfsd_diropargs),
745 .pc_ressize = sizeof(struct nfsd_stat),
746 .pc_cachetype = RC_REPLSTAT,
747 .pc_xdrressize = ST,
748 .pc_name = "REMOVE",
749 },
750 [NFSPROC_RENAME] = {
751 .pc_func = nfsd_proc_rename,
752 .pc_decode = nfssvc_decode_renameargs,
753 .pc_encode = nfssvc_encode_statres,
754 .pc_argsize = sizeof(struct nfsd_renameargs),
755 .pc_argzero = sizeof(struct nfsd_renameargs),
756 .pc_ressize = sizeof(struct nfsd_stat),
757 .pc_cachetype = RC_REPLSTAT,
758 .pc_xdrressize = ST,
759 .pc_name = "RENAME",
760 },
761 [NFSPROC_LINK] = {
762 .pc_func = nfsd_proc_link,
763 .pc_decode = nfssvc_decode_linkargs,
764 .pc_encode = nfssvc_encode_statres,
765 .pc_argsize = sizeof(struct nfsd_linkargs),
766 .pc_argzero = sizeof(struct nfsd_linkargs),
767 .pc_ressize = sizeof(struct nfsd_stat),
768 .pc_cachetype = RC_REPLSTAT,
769 .pc_xdrressize = ST,
770 .pc_name = "LINK",
771 },
772 [NFSPROC_SYMLINK] = {
773 .pc_func = nfsd_proc_symlink,
774 .pc_decode = nfssvc_decode_symlinkargs,
775 .pc_encode = nfssvc_encode_statres,
776 .pc_argsize = sizeof(struct nfsd_symlinkargs),
777 .pc_argzero = sizeof(struct nfsd_symlinkargs),
778 .pc_ressize = sizeof(struct nfsd_stat),
779 .pc_cachetype = RC_REPLSTAT,
780 .pc_xdrressize = ST,
781 .pc_name = "SYMLINK",
782 },
783 [NFSPROC_MKDIR] = {
784 .pc_func = nfsd_proc_mkdir,
785 .pc_decode = nfssvc_decode_createargs,
786 .pc_encode = nfssvc_encode_diropres,
787 .pc_release = nfssvc_release_diropres,
788 .pc_argsize = sizeof(struct nfsd_createargs),
789 .pc_argzero = sizeof(struct nfsd_createargs),
790 .pc_ressize = sizeof(struct nfsd_diropres),
791 .pc_cachetype = RC_REPLBUFF,
792 .pc_xdrressize = ST+FH+AT,
793 .pc_name = "MKDIR",
794 },
795 [NFSPROC_RMDIR] = {
796 .pc_func = nfsd_proc_rmdir,
797 .pc_decode = nfssvc_decode_diropargs,
798 .pc_encode = nfssvc_encode_statres,
799 .pc_argsize = sizeof(struct nfsd_diropargs),
800 .pc_argzero = sizeof(struct nfsd_diropargs),
801 .pc_ressize = sizeof(struct nfsd_stat),
802 .pc_cachetype = RC_REPLSTAT,
803 .pc_xdrressize = ST,
804 .pc_name = "RMDIR",
805 },
806 [NFSPROC_READDIR] = {
807 .pc_func = nfsd_proc_readdir,
808 .pc_decode = nfssvc_decode_readdirargs,
809 .pc_encode = nfssvc_encode_readdirres,
810 .pc_argsize = sizeof(struct nfsd_readdirargs),
811 .pc_argzero = sizeof(struct nfsd_readdirargs),
812 .pc_ressize = sizeof(struct nfsd_readdirres),
813 .pc_cachetype = RC_NOCACHE,
814 .pc_name = "READDIR",
815 },
816 [NFSPROC_STATFS] = {
817 .pc_func = nfsd_proc_statfs,
818 .pc_decode = nfssvc_decode_fhandleargs,
819 .pc_encode = nfssvc_encode_statfsres,
820 .pc_argsize = sizeof(struct nfsd_fhandle),
821 .pc_argzero = sizeof(struct nfsd_fhandle),
822 .pc_ressize = sizeof(struct nfsd_statfsres),
823 .pc_cachetype = RC_NOCACHE,
824 .pc_xdrressize = ST+5,
825 .pc_name = "STATFS",
826 },
827 };
828
829 static DEFINE_PER_CPU_ALIGNED(unsigned long,
830 nfsd_count2[ARRAY_SIZE(nfsd_procedures2)]);
831 const struct svc_version nfsd_version2 = {
832 .vs_vers = 2,
833 .vs_nproc = ARRAY_SIZE(nfsd_procedures2),
834 .vs_proc = nfsd_procedures2,
835 .vs_count = nfsd_count2,
836 .vs_dispatch = nfsd_dispatch,
837 .vs_xdrsize = NFS2_SVC_XDRSIZE,
838 };
839
