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 #include "trace.h"
14
15 #define NFSDDBG_FACILITY NFSDDBG_PROC
16
nfsd_map_status(__be32 status)17 static __be32 nfsd_map_status(__be32 status)
18 {
19 switch (status) {
20 case nfs_ok:
21 break;
22 case nfserr_nofilehandle:
23 case nfserr_badhandle:
24 status = nfserr_stale;
25 break;
26 case nfserr_wrongsec:
27 case nfserr_xdev:
28 case nfserr_file_open:
29 status = nfserr_acces;
30 break;
31 case nfserr_symlink_not_dir:
32 status = nfserr_notdir;
33 break;
34 case nfserr_symlink:
35 case nfserr_wrong_type:
36 status = nfserr_io;
37 break;
38 }
39 return status;
40 }
41
42 static __be32
nfsd_proc_null(struct svc_rqst * rqstp)43 nfsd_proc_null(struct svc_rqst *rqstp)
44 {
45 return rpc_success;
46 }
47
48 /*
49 * Get a file's attributes
50 * N.B. After this call resp->fh needs an fh_put
51 */
52 static __be32
nfsd_proc_getattr(struct svc_rqst * rqstp)53 nfsd_proc_getattr(struct svc_rqst *rqstp)
54 {
55 struct nfsd_fhandle *argp = rqstp->rq_argp;
56 struct nfsd_attrstat *resp = rqstp->rq_resp;
57
58 trace_nfsd_vfs_getattr(rqstp, &argp->fh);
59
60 fh_copy(&resp->fh, &argp->fh);
61 resp->status = fh_verify(rqstp, &resp->fh, 0,
62 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
63 if (resp->status != nfs_ok)
64 goto out;
65 resp->status = fh_getattr(&resp->fh, &resp->stat);
66 out:
67 resp->status = nfsd_map_status(resp->status);
68 return rpc_success;
69 }
70
71 /*
72 * Set a file's attributes
73 * N.B. After this call resp->fh needs an fh_put
74 */
75 static __be32
nfsd_proc_setattr(struct svc_rqst * rqstp)76 nfsd_proc_setattr(struct svc_rqst *rqstp)
77 {
78 struct nfsd_sattrargs *argp = rqstp->rq_argp;
79 struct nfsd_attrstat *resp = rqstp->rq_resp;
80 struct iattr *iap = &argp->attrs;
81 struct nfsd_attrs attrs = {
82 .na_iattr = iap,
83 };
84 struct svc_fh *fhp;
85
86 dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n",
87 SVCFH_fmt(&argp->fh),
88 argp->attrs.ia_valid, (long) argp->attrs.ia_size);
89
90 fhp = fh_copy(&resp->fh, &argp->fh);
91
92 /*
93 * NFSv2 does not differentiate between "set-[ac]time-to-now"
94 * which only requires access, and "set-[ac]time-to-X" which
95 * requires ownership.
96 * So if it looks like it might be "set both to the same time which
97 * is close to now", and if setattr_prepare fails, then we
98 * convert to "set to now" instead of "set to explicit time"
99 *
100 * We only call setattr_prepare as the last test as technically
101 * it is not an interface that we should be using.
102 */
103 #define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
104 #define MAX_TOUCH_TIME_ERROR (30*60)
105 if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET &&
106 iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) {
107 /*
108 * Looks probable.
109 *
110 * Now just make sure time is in the right ballpark.
111 * Solaris, at least, doesn't seem to care what the time
112 * request is. We require it be within 30 minutes of now.
113 */
114 time64_t delta = iap->ia_atime.tv_sec - ktime_get_real_seconds();
115
116 resp->status = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
117 if (resp->status != nfs_ok)
118 goto out;
119
120 if (delta < 0)
121 delta = -delta;
122 if (delta < MAX_TOUCH_TIME_ERROR &&
123 setattr_prepare(&nop_mnt_idmap, fhp->fh_dentry, iap) != 0) {
124 /*
125 * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME.
126 * This will cause notify_change to set these times
127 * to "now"
128 */
129 iap->ia_valid &= ~BOTH_TIME_SET;
130 }
131 }
132
133 resp->status = nfsd_setattr(rqstp, fhp, &attrs, NULL);
134 if (resp->status != nfs_ok)
135 goto out;
136
137 resp->status = fh_getattr(&resp->fh, &resp->stat);
138 out:
139 resp->status = nfsd_map_status(resp->status);
140 return rpc_success;
141 }
142
143 /* Obsolete, replaced by MNTPROC_MNT. */
144 static __be32
nfsd_proc_root(struct svc_rqst * rqstp)145 nfsd_proc_root(struct svc_rqst *rqstp)
146 {
147 return rpc_success;
148 }
149
150 /*
151 * Look up a path name component
152 * Note: the dentry in the resp->fh may be negative if the file
153 * doesn't exist yet.
154 * N.B. After this call resp->fh needs an fh_put
155 */
156 static __be32
nfsd_proc_lookup(struct svc_rqst * rqstp)157 nfsd_proc_lookup(struct svc_rqst *rqstp)
158 {
159 struct nfsd_diropargs *argp = rqstp->rq_argp;
160 struct nfsd_diropres *resp = rqstp->rq_resp;
161
162 dprintk("nfsd: LOOKUP %s %.*s\n",
163 SVCFH_fmt(&argp->fh), argp->len, argp->name);
164
165 fh_init(&resp->fh, NFS_FHSIZE);
166 resp->status = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len,
167 &resp->fh);
168 fh_put(&argp->fh);
169 if (resp->status != nfs_ok)
170 goto out;
171
172 resp->status = fh_getattr(&resp->fh, &resp->stat);
173 out:
174 resp->status = nfsd_map_status(resp->status);
175 return rpc_success;
176 }
177
178 /*
179 * Read a symlink.
180 */
181 static __be32
nfsd_proc_readlink(struct svc_rqst * rqstp)182 nfsd_proc_readlink(struct svc_rqst *rqstp)
183 {
184 struct nfsd_fhandle *argp = rqstp->rq_argp;
185 struct nfsd_readlinkres *resp = rqstp->rq_resp;
186
187 dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
188
189 /* Read the symlink. */
190 resp->len = NFS_MAXPATHLEN;
191 resp->page = *(rqstp->rq_next_page++);
192 resp->status = nfsd_readlink(rqstp, &argp->fh,
193 page_address(resp->page), &resp->len);
194
195 fh_put(&argp->fh);
196 resp->status = nfsd_map_status(resp->status);
197 return rpc_success;
198 }
199
200 /*
201 * Read a portion of a file.
202 * N.B. After this call resp->fh needs an fh_put
203 */
204 static __be32
nfsd_proc_read(struct svc_rqst * rqstp)205 nfsd_proc_read(struct svc_rqst *rqstp)
206 {
207 struct nfsd_readargs *argp = rqstp->rq_argp;
208 struct nfsd_readres *resp = rqstp->rq_resp;
209 u32 eof;
210
211 dprintk("nfsd: READ %s %d bytes at %d\n",
212 SVCFH_fmt(&argp->fh),
213 argp->count, argp->offset);
214
215 argp->count = min_t(u32, argp->count, NFS_MAXDATA);
216 argp->count = min_t(u32, argp->count, rqstp->rq_res.buflen);
217
218 resp->pages = rqstp->rq_next_page;
219
220 /* Obtain buffer pointer for payload. 19 is 1 word for
221 * status, 17 words for fattr, and 1 word for the byte count.
222 */
223 svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
224
225 resp->count = argp->count;
226 fh_copy(&resp->fh, &argp->fh);
227 resp->status = nfsd_read(rqstp, &resp->fh, argp->offset,
228 &resp->count, &eof);
229 if (resp->status == nfs_ok)
230 resp->status = fh_getattr(&resp->fh, &resp->stat);
231 else if (resp->status == nfserr_jukebox)
232 set_bit(RQ_DROPME, &rqstp->rq_flags);
233 resp->status = nfsd_map_status(resp->status);
234 return rpc_success;
235 }
236
237 /* Reserved */
238 static __be32
nfsd_proc_writecache(struct svc_rqst * rqstp)239 nfsd_proc_writecache(struct svc_rqst *rqstp)
240 {
241 return rpc_success;
242 }
243
244 /*
245 * Write data to a file
246 * N.B. After this call resp->fh needs an fh_put
247 */
248 static __be32
nfsd_proc_write(struct svc_rqst * rqstp)249 nfsd_proc_write(struct svc_rqst *rqstp)
250 {
251 struct nfsd_writeargs *argp = rqstp->rq_argp;
252 struct nfsd_attrstat *resp = rqstp->rq_resp;
253 unsigned long cnt = argp->len;
254
255 dprintk("nfsd: WRITE %s %u bytes at %d\n",
256 SVCFH_fmt(&argp->fh),
257 argp->len, argp->offset);
258
259 fh_copy(&resp->fh, &argp->fh);
260 resp->status = nfsd_write(rqstp, &resp->fh, argp->offset,
261 &argp->payload, &cnt, NFS_DATA_SYNC, NULL);
262 if (resp->status == nfs_ok)
263 resp->status = fh_getattr(&resp->fh, &resp->stat);
264 else if (resp->status == nfserr_jukebox)
265 set_bit(RQ_DROPME, &rqstp->rq_flags);
266 resp->status = nfsd_map_status(resp->status);
267 return rpc_success;
268 }
269
270 /*
271 * CREATE processing is complicated. The keyword here is `overloaded.'
272 * The parent directory is kept locked between the check for existence
273 * and the actual create() call in compliance with VFS protocols.
274 * N.B. After this call _both_ argp->fh and resp->fh need an fh_put
275 */
276 static __be32
nfsd_proc_create(struct svc_rqst * rqstp)277 nfsd_proc_create(struct svc_rqst *rqstp)
278 {
279 struct nfsd_createargs *argp = rqstp->rq_argp;
280 struct nfsd_diropres *resp = rqstp->rq_resp;
281 svc_fh *dirfhp = &argp->fh;
282 svc_fh *newfhp = &resp->fh;
283 struct iattr *attr = &argp->attrs;
284 struct nfsd_attrs attrs = {
285 .na_iattr = attr,
286 };
287 struct inode *inode;
288 struct dentry *dchild;
289 int type, mode;
290 int hosterr;
291 dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size);
292
293 /* First verify the parent file handle */
294 resp->status = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
295 if (resp->status != nfs_ok)
296 goto done; /* must fh_put dirfhp even on error */
297
298 /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */
299
300 resp->status = nfserr_exist;
301 if (isdotent(argp->name, argp->len))
302 goto done;
303 hosterr = fh_want_write(dirfhp);
304 if (hosterr) {
305 resp->status = nfserrno(hosterr);
306 goto done;
307 }
308
309 dchild = start_creating(&nop_mnt_idmap, dirfhp->fh_dentry,
310 &QSTR_LEN(argp->name, argp->len));
311 if (IS_ERR(dchild)) {
312 resp->status = nfserrno(PTR_ERR(dchild));
313 goto out_write;
314 }
315 fh_init(newfhp, NFS_FHSIZE);
316 resp->status = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
317 if (!resp->status && d_really_is_negative(dchild))
318 resp->status = nfserr_noent;
319 if (resp->status) {
320 if (resp->status != nfserr_noent)
321 goto out_unlock;
322 /*
323 * If the new file handle wasn't verified, we can't tell
324 * whether the file exists or not. Time to bail ...
325 */
326 resp->status = nfserr_acces;
327 if (!newfhp->fh_dentry) {
328 printk(KERN_WARNING
329 "nfsd_proc_create: file handle not verified\n");
330 goto out_unlock;
331 }
332 }
333
334 inode = d_inode(newfhp->fh_dentry);
335
336 /* Unfudge the mode bits */
337 if (attr->ia_valid & ATTR_MODE) {
338 type = attr->ia_mode & S_IFMT;
339 mode = attr->ia_mode & ~S_IFMT;
340 if (!type) {
341 /* no type, so if target exists, assume same as that,
342 * else assume a file */
343 if (inode) {
344 type = inode->i_mode & S_IFMT;
345 switch(type) {
346 case S_IFCHR:
347 case S_IFBLK:
348 /* reserve rdev for later checking */
349 rdev = inode->i_rdev;
350 attr->ia_valid |= ATTR_SIZE;
351
352 fallthrough;
353 case S_IFIFO:
354 /* this is probably a permission check..
355 * at least IRIX implements perm checking on
356 * echo thing > device-special-file-or-pipe
357 * by doing a CREATE with type==0
358 */
359 resp->status = nfsd_permission(
360 &rqstp->rq_cred,
361 newfhp->fh_export,
362 newfhp->fh_dentry,
363 NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS);
364 if (resp->status && resp->status != nfserr_rofs)
365 goto out_unlock;
366 }
367 } else
368 type = S_IFREG;
369 }
370 } else if (inode) {
371 type = inode->i_mode & S_IFMT;
372 mode = inode->i_mode & ~S_IFMT;
373 } else {
374 type = S_IFREG;
375 mode = 0; /* ??? */
376 }
377
378 attr->ia_valid |= ATTR_MODE;
379 attr->ia_mode = mode;
380
381 /* Special treatment for non-regular files according to the
382 * gospel of sun micro
383 */
384 if (type != S_IFREG) {
385 if (type != S_IFBLK && type != S_IFCHR) {
386 rdev = 0;
387 } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) {
388 /* If you think you've seen the worst, grok this. */
389 type = S_IFIFO;
390 } else {
391 /* Okay, char or block special */
392 if (!rdev)
393 rdev = wanted;
394 }
395
396 /* we've used the SIZE information, so discard it */
397 attr->ia_valid &= ~ATTR_SIZE;
398
399 /* Make sure the type and device matches */
400 resp->status = nfserr_exist;
401 if (inode && inode_wrong_type(inode, type))
402 goto out_unlock;
403 }
404
405 resp->status = nfs_ok;
406 if (!inode) {
407 /* File doesn't exist. Create it and set attrs */
408 resp->status = nfsd_create_locked(rqstp, dirfhp, &attrs, type,
409 rdev, newfhp);
410 /* nfsd_create_locked() unlocked the parent */
411 dput(dchild);
412 goto out_write;
413 } else if (type == S_IFREG) {
414 dprintk("nfsd: existing %s, valid=%x, size=%ld\n",
415 argp->name, attr->ia_valid, (long) attr->ia_size);
416 /* File already exists. We ignore all attributes except
417 * size, so that creat() behaves exactly like
418 * open(..., O_CREAT|O_TRUNC|O_WRONLY).
419 */
420 attr->ia_valid &= ATTR_SIZE;
421 if (attr->ia_valid)
422 resp->status = nfsd_setattr(rqstp, newfhp, &attrs,
423 NULL);
424 }
425
426 out_unlock:
427 end_creating(dchild);
428 out_write:
429 fh_drop_write(dirfhp);
430 done:
431 fh_put(dirfhp);
432 if (resp->status != nfs_ok)
433 goto out;
434 resp->status = fh_getattr(&resp->fh, &resp->stat);
435 out:
436 resp->status = nfsd_map_status(resp->status);
437 return rpc_success;
438 }
439
440 static __be32
nfsd_proc_remove(struct svc_rqst * rqstp)441 nfsd_proc_remove(struct svc_rqst *rqstp)
442 {
443 struct nfsd_diropargs *argp = rqstp->rq_argp;
444 struct nfsd_stat *resp = rqstp->rq_resp;
445
446 /* Unlink. -SIFDIR means file must not be a directory */
447 resp->status = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR,
448 argp->name, argp->len);
449 fh_put(&argp->fh);
450 resp->status = nfsd_map_status(resp->status);
451 return rpc_success;
452 }
453
454 static __be32
nfsd_proc_rename(struct svc_rqst * rqstp)455 nfsd_proc_rename(struct svc_rqst *rqstp)
456 {
457 struct nfsd_renameargs *argp = rqstp->rq_argp;
458 struct nfsd_stat *resp = rqstp->rq_resp;
459
460 resp->status = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen,
461 &argp->tfh, argp->tname, argp->tlen);
462 fh_put(&argp->ffh);
463 fh_put(&argp->tfh);
464 resp->status = nfsd_map_status(resp->status);
465 return rpc_success;
466 }
467
468 static __be32
nfsd_proc_link(struct svc_rqst * rqstp)469 nfsd_proc_link(struct svc_rqst *rqstp)
470 {
471 struct nfsd_linkargs *argp = rqstp->rq_argp;
472 struct nfsd_stat *resp = rqstp->rq_resp;
473
474 resp->status = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen,
475 &argp->ffh);
476 fh_put(&argp->ffh);
477 fh_put(&argp->tfh);
478 resp->status = nfsd_map_status(resp->status);
479 return rpc_success;
480 }
481
482 static __be32
nfsd_proc_symlink(struct svc_rqst * rqstp)483 nfsd_proc_symlink(struct svc_rqst *rqstp)
484 {
485 struct nfsd_symlinkargs *argp = rqstp->rq_argp;
486 struct nfsd_stat *resp = rqstp->rq_resp;
487 struct nfsd_attrs attrs = {
488 .na_iattr = &argp->attrs,
489 };
490 struct svc_fh newfh;
491
492 if (argp->tlen > NFS_MAXPATHLEN) {
493 resp->status = nfserr_nametoolong;
494 goto out;
495 }
496
497 argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first,
498 page_address(rqstp->rq_arg.pages[0]),
499 argp->tlen);
500 if (IS_ERR(argp->tname)) {
501 resp->status = nfserrno(PTR_ERR(argp->tname));
502 goto out;
503 }
504
505 fh_init(&newfh, NFS_FHSIZE);
506 resp->status = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen,
507 argp->tname, &attrs, &newfh);
508
509 kfree(argp->tname);
510 fh_put(&argp->ffh);
511 fh_put(&newfh);
512 out:
513 resp->status = nfsd_map_status(resp->status);
514 return rpc_success;
515 }
516
517 /*
518 * Make directory. This operation is not idempotent.
519 * N.B. After this call resp->fh needs an fh_put
520 */
521 static __be32
nfsd_proc_mkdir(struct svc_rqst * rqstp)522 nfsd_proc_mkdir(struct svc_rqst *rqstp)
523 {
524 struct nfsd_createargs *argp = rqstp->rq_argp;
525 struct nfsd_diropres *resp = rqstp->rq_resp;
526 struct nfsd_attrs attrs = {
527 .na_iattr = &argp->attrs,
528 };
529
530 if (resp->fh.fh_dentry) {
531 printk(KERN_WARNING
532 "nfsd_proc_mkdir: response already verified??\n");
533 }
534
535 argp->attrs.ia_valid &= ~ATTR_SIZE;
536 fh_init(&resp->fh, NFS_FHSIZE);
537 resp->status = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
538 &attrs, S_IFDIR, 0, &resp->fh);
539 fh_put(&argp->fh);
540 if (resp->status != nfs_ok)
541 goto out;
542
543 resp->status = fh_getattr(&resp->fh, &resp->stat);
544 out:
545 resp->status = nfsd_map_status(resp->status);
546 return rpc_success;
547 }
548
549 /*
550 * Remove a directory
551 */
552 static __be32
nfsd_proc_rmdir(struct svc_rqst * rqstp)553 nfsd_proc_rmdir(struct svc_rqst *rqstp)
554 {
555 struct nfsd_diropargs *argp = rqstp->rq_argp;
556 struct nfsd_stat *resp = rqstp->rq_resp;
557
558 resp->status = nfsd_unlink(rqstp, &argp->fh, S_IFDIR,
559 argp->name, argp->len);
560 fh_put(&argp->fh);
561 resp->status = nfsd_map_status(resp->status);
562 return rpc_success;
563 }
564
nfsd_init_dirlist_pages(struct svc_rqst * rqstp,struct nfsd_readdirres * resp,u32 count)565 static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp,
566 struct nfsd_readdirres *resp,
567 u32 count)
568 {
569 struct xdr_buf *buf = &resp->dirlist;
570 struct xdr_stream *xdr = &resp->xdr;
571
572 memset(buf, 0, sizeof(*buf));
573
574 /* Reserve room for the NULL ptr & eof flag (-2 words) */
575 buf->buflen = clamp(count, (u32)(XDR_UNIT * 2), (u32)PAGE_SIZE);
576 buf->buflen -= XDR_UNIT * 2;
577 buf->pages = rqstp->rq_next_page;
578 rqstp->rq_next_page++;
579
580 xdr_init_encode_pages(xdr, buf);
581 }
582
583 /*
584 * Read a portion of a directory.
585 */
586 static __be32
nfsd_proc_readdir(struct svc_rqst * rqstp)587 nfsd_proc_readdir(struct svc_rqst *rqstp)
588 {
589 struct nfsd_readdirargs *argp = rqstp->rq_argp;
590 struct nfsd_readdirres *resp = rqstp->rq_resp;
591 loff_t offset;
592
593 trace_nfsd_vfs_readdir(rqstp, &argp->fh, argp->count, argp->cookie);
594
595 nfsd_init_dirlist_pages(rqstp, resp, argp->count);
596
597 resp->common.err = nfs_ok;
598 resp->cookie_offset = 0;
599 offset = argp->cookie;
600 resp->status = nfsd_readdir(rqstp, &argp->fh, &offset,
601 &resp->common, nfssvc_encode_entry);
602 nfssvc_encode_nfscookie(resp, offset);
603
604 fh_put(&argp->fh);
605 resp->status = nfsd_map_status(resp->status);
606 return rpc_success;
607 }
608
609 /*
610 * Get file system info
611 */
612 static __be32
nfsd_proc_statfs(struct svc_rqst * rqstp)613 nfsd_proc_statfs(struct svc_rqst *rqstp)
614 {
615 struct nfsd_fhandle *argp = rqstp->rq_argp;
616 struct nfsd_statfsres *resp = rqstp->rq_resp;
617
618 resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
619 NFSD_MAY_BYPASS_GSS_ON_ROOT);
620 fh_put(&argp->fh);
621 resp->status = nfsd_map_status(resp->status);
622 return rpc_success;
623 }
624
625 /*
626 * NFSv2 Server procedures.
627 * Only the results of non-idempotent operations are cached.
628 */
629
630 #define ST 1 /* status */
631 #define FH 8 /* filehandle */
632 #define AT 18 /* attributes */
633
634 static const struct svc_procedure nfsd_procedures2[18] = {
635 [NFSPROC_NULL] = {
636 .pc_func = nfsd_proc_null,
637 .pc_decode = nfssvc_decode_voidarg,
638 .pc_encode = nfssvc_encode_voidres,
639 .pc_argsize = sizeof(struct nfsd_voidargs),
640 .pc_argzero = sizeof(struct nfsd_voidargs),
641 .pc_ressize = sizeof(struct nfsd_voidres),
642 .pc_cachetype = RC_NOCACHE,
643 .pc_xdrressize = 0,
644 .pc_name = "NULL",
645 },
646 [NFSPROC_GETATTR] = {
647 .pc_func = nfsd_proc_getattr,
648 .pc_decode = nfssvc_decode_fhandleargs,
649 .pc_encode = nfssvc_encode_attrstatres,
650 .pc_release = nfssvc_release_attrstat,
651 .pc_argsize = sizeof(struct nfsd_fhandle),
652 .pc_argzero = sizeof(struct nfsd_fhandle),
653 .pc_ressize = sizeof(struct nfsd_attrstat),
654 .pc_cachetype = RC_NOCACHE,
655 .pc_xdrressize = ST+AT,
656 .pc_name = "GETATTR",
657 },
658 [NFSPROC_SETATTR] = {
659 .pc_func = nfsd_proc_setattr,
660 .pc_decode = nfssvc_decode_sattrargs,
661 .pc_encode = nfssvc_encode_attrstatres,
662 .pc_release = nfssvc_release_attrstat,
663 .pc_argsize = sizeof(struct nfsd_sattrargs),
664 .pc_argzero = sizeof(struct nfsd_sattrargs),
665 .pc_ressize = sizeof(struct nfsd_attrstat),
666 .pc_cachetype = RC_REPLBUFF,
667 .pc_xdrressize = ST+AT,
668 .pc_name = "SETATTR",
669 },
670 [NFSPROC_ROOT] = {
671 .pc_func = nfsd_proc_root,
672 .pc_decode = nfssvc_decode_voidarg,
673 .pc_encode = nfssvc_encode_voidres,
674 .pc_argsize = sizeof(struct nfsd_voidargs),
675 .pc_argzero = sizeof(struct nfsd_voidargs),
676 .pc_ressize = sizeof(struct nfsd_voidres),
677 .pc_cachetype = RC_NOCACHE,
678 .pc_xdrressize = 0,
679 .pc_name = "ROOT",
680 },
681 [NFSPROC_LOOKUP] = {
682 .pc_func = nfsd_proc_lookup,
683 .pc_decode = nfssvc_decode_diropargs,
684 .pc_encode = nfssvc_encode_diropres,
685 .pc_release = nfssvc_release_diropres,
686 .pc_argsize = sizeof(struct nfsd_diropargs),
687 .pc_argzero = sizeof(struct nfsd_diropargs),
688 .pc_ressize = sizeof(struct nfsd_diropres),
689 .pc_cachetype = RC_NOCACHE,
690 .pc_xdrressize = ST+FH+AT,
691 .pc_name = "LOOKUP",
692 },
693 [NFSPROC_READLINK] = {
694 .pc_func = nfsd_proc_readlink,
695 .pc_decode = nfssvc_decode_fhandleargs,
696 .pc_encode = nfssvc_encode_readlinkres,
697 .pc_argsize = sizeof(struct nfsd_fhandle),
698 .pc_argzero = sizeof(struct nfsd_fhandle),
699 .pc_ressize = sizeof(struct nfsd_readlinkres),
700 .pc_cachetype = RC_NOCACHE,
701 .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
702 .pc_name = "READLINK",
703 },
704 [NFSPROC_READ] = {
705 .pc_func = nfsd_proc_read,
706 .pc_decode = nfssvc_decode_readargs,
707 .pc_encode = nfssvc_encode_readres,
708 .pc_release = nfssvc_release_readres,
709 .pc_argsize = sizeof(struct nfsd_readargs),
710 .pc_argzero = sizeof(struct nfsd_readargs),
711 .pc_ressize = sizeof(struct nfsd_readres),
712 .pc_cachetype = RC_NOCACHE,
713 .pc_xdrressize = ST+AT+1+NFS_MAXDATA/4,
714 .pc_name = "READ",
715 },
716 [NFSPROC_WRITECACHE] = {
717 .pc_func = nfsd_proc_writecache,
718 .pc_decode = nfssvc_decode_voidarg,
719 .pc_encode = nfssvc_encode_voidres,
720 .pc_argsize = sizeof(struct nfsd_voidargs),
721 .pc_argzero = sizeof(struct nfsd_voidargs),
722 .pc_ressize = sizeof(struct nfsd_voidres),
723 .pc_cachetype = RC_NOCACHE,
724 .pc_xdrressize = 0,
725 .pc_name = "WRITECACHE",
726 },
727 [NFSPROC_WRITE] = {
728 .pc_func = nfsd_proc_write,
729 .pc_decode = nfssvc_decode_writeargs,
730 .pc_encode = nfssvc_encode_attrstatres,
731 .pc_release = nfssvc_release_attrstat,
732 .pc_argsize = sizeof(struct nfsd_writeargs),
733 .pc_argzero = sizeof(struct nfsd_writeargs),
734 .pc_ressize = sizeof(struct nfsd_attrstat),
735 .pc_cachetype = RC_REPLBUFF,
736 .pc_xdrressize = ST+AT,
737 .pc_name = "WRITE",
738 },
739 [NFSPROC_CREATE] = {
740 .pc_func = nfsd_proc_create,
741 .pc_decode = nfssvc_decode_createargs,
742 .pc_encode = nfssvc_encode_diropres,
743 .pc_release = nfssvc_release_diropres,
744 .pc_argsize = sizeof(struct nfsd_createargs),
745 .pc_argzero = sizeof(struct nfsd_createargs),
746 .pc_ressize = sizeof(struct nfsd_diropres),
747 .pc_cachetype = RC_REPLBUFF,
748 .pc_xdrressize = ST+FH+AT,
749 .pc_name = "CREATE",
750 },
751 [NFSPROC_REMOVE] = {
752 .pc_func = nfsd_proc_remove,
753 .pc_decode = nfssvc_decode_diropargs,
754 .pc_encode = nfssvc_encode_statres,
755 .pc_argsize = sizeof(struct nfsd_diropargs),
756 .pc_argzero = sizeof(struct nfsd_diropargs),
757 .pc_ressize = sizeof(struct nfsd_stat),
758 .pc_cachetype = RC_REPLSTAT,
759 .pc_xdrressize = ST,
760 .pc_name = "REMOVE",
761 },
762 [NFSPROC_RENAME] = {
763 .pc_func = nfsd_proc_rename,
764 .pc_decode = nfssvc_decode_renameargs,
765 .pc_encode = nfssvc_encode_statres,
766 .pc_argsize = sizeof(struct nfsd_renameargs),
767 .pc_argzero = sizeof(struct nfsd_renameargs),
768 .pc_ressize = sizeof(struct nfsd_stat),
769 .pc_cachetype = RC_REPLSTAT,
770 .pc_xdrressize = ST,
771 .pc_name = "RENAME",
772 },
773 [NFSPROC_LINK] = {
774 .pc_func = nfsd_proc_link,
775 .pc_decode = nfssvc_decode_linkargs,
776 .pc_encode = nfssvc_encode_statres,
777 .pc_argsize = sizeof(struct nfsd_linkargs),
778 .pc_argzero = sizeof(struct nfsd_linkargs),
779 .pc_ressize = sizeof(struct nfsd_stat),
780 .pc_cachetype = RC_REPLSTAT,
781 .pc_xdrressize = ST,
782 .pc_name = "LINK",
783 },
784 [NFSPROC_SYMLINK] = {
785 .pc_func = nfsd_proc_symlink,
786 .pc_decode = nfssvc_decode_symlinkargs,
787 .pc_encode = nfssvc_encode_statres,
788 .pc_argsize = sizeof(struct nfsd_symlinkargs),
789 .pc_argzero = sizeof(struct nfsd_symlinkargs),
790 .pc_ressize = sizeof(struct nfsd_stat),
791 .pc_cachetype = RC_REPLSTAT,
792 .pc_xdrressize = ST,
793 .pc_name = "SYMLINK",
794 },
795 [NFSPROC_MKDIR] = {
796 .pc_func = nfsd_proc_mkdir,
797 .pc_decode = nfssvc_decode_createargs,
798 .pc_encode = nfssvc_encode_diropres,
799 .pc_release = nfssvc_release_diropres,
800 .pc_argsize = sizeof(struct nfsd_createargs),
801 .pc_argzero = sizeof(struct nfsd_createargs),
802 .pc_ressize = sizeof(struct nfsd_diropres),
803 .pc_cachetype = RC_REPLBUFF,
804 .pc_xdrressize = ST+FH+AT,
805 .pc_name = "MKDIR",
806 },
807 [NFSPROC_RMDIR] = {
808 .pc_func = nfsd_proc_rmdir,
809 .pc_decode = nfssvc_decode_diropargs,
810 .pc_encode = nfssvc_encode_statres,
811 .pc_argsize = sizeof(struct nfsd_diropargs),
812 .pc_argzero = sizeof(struct nfsd_diropargs),
813 .pc_ressize = sizeof(struct nfsd_stat),
814 .pc_cachetype = RC_REPLSTAT,
815 .pc_xdrressize = ST,
816 .pc_name = "RMDIR",
817 },
818 [NFSPROC_READDIR] = {
819 .pc_func = nfsd_proc_readdir,
820 .pc_decode = nfssvc_decode_readdirargs,
821 .pc_encode = nfssvc_encode_readdirres,
822 .pc_argsize = sizeof(struct nfsd_readdirargs),
823 .pc_argzero = sizeof(struct nfsd_readdirargs),
824 .pc_ressize = sizeof(struct nfsd_readdirres),
825 .pc_cachetype = RC_NOCACHE,
826 .pc_name = "READDIR",
827 },
828 [NFSPROC_STATFS] = {
829 .pc_func = nfsd_proc_statfs,
830 .pc_decode = nfssvc_decode_fhandleargs,
831 .pc_encode = nfssvc_encode_statfsres,
832 .pc_argsize = sizeof(struct nfsd_fhandle),
833 .pc_argzero = sizeof(struct nfsd_fhandle),
834 .pc_ressize = sizeof(struct nfsd_statfsres),
835 .pc_cachetype = RC_NOCACHE,
836 .pc_xdrressize = ST+5,
837 .pc_name = "STATFS",
838 },
839 };
840
841 static DEFINE_PER_CPU_ALIGNED(unsigned long,
842 nfsd_count2[ARRAY_SIZE(nfsd_procedures2)]);
843 const struct svc_version nfsd_version2 = {
844 .vs_vers = 2,
845 .vs_nproc = ARRAY_SIZE(nfsd_procedures2),
846 .vs_proc = nfsd_procedures2,
847 .vs_count = nfsd_count2,
848 .vs_dispatch = nfsd_dispatch,
849 .vs_xdrsize = NFS2_SVC_XDRSIZE,
850 };
851