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_inval;
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 inode_lock_nested(dirfhp->fh_dentry->d_inode, I_MUTEX_PARENT);
310 dchild = lookup_one(&nop_mnt_idmap, &QSTR_LEN(argp->name, argp->len),
311 dirfhp->fh_dentry);
312 if (IS_ERR(dchild)) {
313 resp->status = nfserrno(PTR_ERR(dchild));
314 goto out_unlock;
315 }
316 fh_init(newfhp, NFS_FHSIZE);
317 resp->status = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
318 if (!resp->status && d_really_is_negative(dchild))
319 resp->status = nfserr_noent;
320 dput(dchild);
321 if (resp->status) {
322 if (resp->status != nfserr_noent)
323 goto out_unlock;
324 /*
325 * If the new file handle wasn't verified, we can't tell
326 * whether the file exists or not. Time to bail ...
327 */
328 resp->status = nfserr_acces;
329 if (!newfhp->fh_dentry) {
330 printk(KERN_WARNING
331 "nfsd_proc_create: file handle not verified\n");
332 goto out_unlock;
333 }
334 }
335
336 inode = d_inode(newfhp->fh_dentry);
337
338 /* Unfudge the mode bits */
339 if (attr->ia_valid & ATTR_MODE) {
340 type = attr->ia_mode & S_IFMT;
341 mode = attr->ia_mode & ~S_IFMT;
342 if (!type) {
343 /* no type, so if target exists, assume same as that,
344 * else assume a file */
345 if (inode) {
346 type = inode->i_mode & S_IFMT;
347 switch(type) {
348 case S_IFCHR:
349 case S_IFBLK:
350 /* reserve rdev for later checking */
351 rdev = inode->i_rdev;
352 attr->ia_valid |= ATTR_SIZE;
353
354 fallthrough;
355 case S_IFIFO:
356 /* this is probably a permission check..
357 * at least IRIX implements perm checking on
358 * echo thing > device-special-file-or-pipe
359 * by doing a CREATE with type==0
360 */
361 resp->status = nfsd_permission(
362 &rqstp->rq_cred,
363 newfhp->fh_export,
364 newfhp->fh_dentry,
365 NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS);
366 if (resp->status && resp->status != nfserr_rofs)
367 goto out_unlock;
368 }
369 } else
370 type = S_IFREG;
371 }
372 } else if (inode) {
373 type = inode->i_mode & S_IFMT;
374 mode = inode->i_mode & ~S_IFMT;
375 } else {
376 type = S_IFREG;
377 mode = 0; /* ??? */
378 }
379
380 attr->ia_valid |= ATTR_MODE;
381 attr->ia_mode = mode;
382
383 /* Special treatment for non-regular files according to the
384 * gospel of sun micro
385 */
386 if (type != S_IFREG) {
387 if (type != S_IFBLK && type != S_IFCHR) {
388 rdev = 0;
389 } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) {
390 /* If you think you've seen the worst, grok this. */
391 type = S_IFIFO;
392 } else {
393 /* Okay, char or block special */
394 if (!rdev)
395 rdev = wanted;
396 }
397
398 /* we've used the SIZE information, so discard it */
399 attr->ia_valid &= ~ATTR_SIZE;
400
401 /* Make sure the type and device matches */
402 resp->status = nfserr_exist;
403 if (inode && inode_wrong_type(inode, type))
404 goto out_unlock;
405 }
406
407 resp->status = nfs_ok;
408 if (!inode) {
409 /* File doesn't exist. Create it and set attrs */
410 resp->status = nfsd_create_locked(rqstp, dirfhp, &attrs, type,
411 rdev, newfhp);
412 } else if (type == S_IFREG) {
413 dprintk("nfsd: existing %s, valid=%x, size=%ld\n",
414 argp->name, attr->ia_valid, (long) attr->ia_size);
415 /* File already exists. We ignore all attributes except
416 * size, so that creat() behaves exactly like
417 * open(..., O_CREAT|O_TRUNC|O_WRONLY).
418 */
419 attr->ia_valid &= ATTR_SIZE;
420 if (attr->ia_valid)
421 resp->status = nfsd_setattr(rqstp, newfhp, &attrs,
422 NULL);
423 }
424
425 out_unlock:
426 inode_unlock(dirfhp->fh_dentry->d_inode);
427 fh_drop_write(dirfhp);
428 done:
429 fh_put(dirfhp);
430 if (resp->status != nfs_ok)
431 goto out;
432 resp->status = fh_getattr(&resp->fh, &resp->stat);
433 out:
434 resp->status = nfsd_map_status(resp->status);
435 return rpc_success;
436 }
437
438 static __be32
nfsd_proc_remove(struct svc_rqst * rqstp)439 nfsd_proc_remove(struct svc_rqst *rqstp)
440 {
441 struct nfsd_diropargs *argp = rqstp->rq_argp;
442 struct nfsd_stat *resp = rqstp->rq_resp;
443
444 /* Unlink. -SIFDIR means file must not be a directory */
445 resp->status = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR,
446 argp->name, argp->len);
447 fh_put(&argp->fh);
448 resp->status = nfsd_map_status(resp->status);
449 return rpc_success;
450 }
451
452 static __be32
nfsd_proc_rename(struct svc_rqst * rqstp)453 nfsd_proc_rename(struct svc_rqst *rqstp)
454 {
455 struct nfsd_renameargs *argp = rqstp->rq_argp;
456 struct nfsd_stat *resp = rqstp->rq_resp;
457
458 resp->status = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen,
459 &argp->tfh, argp->tname, argp->tlen);
460 fh_put(&argp->ffh);
461 fh_put(&argp->tfh);
462 resp->status = nfsd_map_status(resp->status);
463 return rpc_success;
464 }
465
466 static __be32
nfsd_proc_link(struct svc_rqst * rqstp)467 nfsd_proc_link(struct svc_rqst *rqstp)
468 {
469 struct nfsd_linkargs *argp = rqstp->rq_argp;
470 struct nfsd_stat *resp = rqstp->rq_resp;
471
472 resp->status = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen,
473 &argp->ffh);
474 fh_put(&argp->ffh);
475 fh_put(&argp->tfh);
476 resp->status = nfsd_map_status(resp->status);
477 return rpc_success;
478 }
479
480 static __be32
nfsd_proc_symlink(struct svc_rqst * rqstp)481 nfsd_proc_symlink(struct svc_rqst *rqstp)
482 {
483 struct nfsd_symlinkargs *argp = rqstp->rq_argp;
484 struct nfsd_stat *resp = rqstp->rq_resp;
485 struct nfsd_attrs attrs = {
486 .na_iattr = &argp->attrs,
487 };
488 struct svc_fh newfh;
489
490 if (argp->tlen > NFS_MAXPATHLEN) {
491 resp->status = nfserr_nametoolong;
492 goto out;
493 }
494
495 argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first,
496 page_address(rqstp->rq_arg.pages[0]),
497 argp->tlen);
498 if (IS_ERR(argp->tname)) {
499 resp->status = nfserrno(PTR_ERR(argp->tname));
500 goto out;
501 }
502
503 fh_init(&newfh, NFS_FHSIZE);
504 resp->status = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen,
505 argp->tname, &attrs, &newfh);
506
507 kfree(argp->tname);
508 fh_put(&argp->ffh);
509 fh_put(&newfh);
510 out:
511 resp->status = nfsd_map_status(resp->status);
512 return rpc_success;
513 }
514
515 /*
516 * Make directory. This operation is not idempotent.
517 * N.B. After this call resp->fh needs an fh_put
518 */
519 static __be32
nfsd_proc_mkdir(struct svc_rqst * rqstp)520 nfsd_proc_mkdir(struct svc_rqst *rqstp)
521 {
522 struct nfsd_createargs *argp = rqstp->rq_argp;
523 struct nfsd_diropres *resp = rqstp->rq_resp;
524 struct nfsd_attrs attrs = {
525 .na_iattr = &argp->attrs,
526 };
527
528 if (resp->fh.fh_dentry) {
529 printk(KERN_WARNING
530 "nfsd_proc_mkdir: response already verified??\n");
531 }
532
533 argp->attrs.ia_valid &= ~ATTR_SIZE;
534 fh_init(&resp->fh, NFS_FHSIZE);
535 resp->status = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
536 &attrs, S_IFDIR, 0, &resp->fh);
537 fh_put(&argp->fh);
538 if (resp->status != nfs_ok)
539 goto out;
540
541 resp->status = fh_getattr(&resp->fh, &resp->stat);
542 out:
543 resp->status = nfsd_map_status(resp->status);
544 return rpc_success;
545 }
546
547 /*
548 * Remove a directory
549 */
550 static __be32
nfsd_proc_rmdir(struct svc_rqst * rqstp)551 nfsd_proc_rmdir(struct svc_rqst *rqstp)
552 {
553 struct nfsd_diropargs *argp = rqstp->rq_argp;
554 struct nfsd_stat *resp = rqstp->rq_resp;
555
556 resp->status = nfsd_unlink(rqstp, &argp->fh, S_IFDIR,
557 argp->name, argp->len);
558 fh_put(&argp->fh);
559 resp->status = nfsd_map_status(resp->status);
560 return rpc_success;
561 }
562
nfsd_init_dirlist_pages(struct svc_rqst * rqstp,struct nfsd_readdirres * resp,u32 count)563 static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp,
564 struct nfsd_readdirres *resp,
565 u32 count)
566 {
567 struct xdr_buf *buf = &resp->dirlist;
568 struct xdr_stream *xdr = &resp->xdr;
569
570 memset(buf, 0, sizeof(*buf));
571
572 /* Reserve room for the NULL ptr & eof flag (-2 words) */
573 buf->buflen = clamp(count, (u32)(XDR_UNIT * 2), (u32)PAGE_SIZE);
574 buf->buflen -= XDR_UNIT * 2;
575 buf->pages = rqstp->rq_next_page;
576 rqstp->rq_next_page++;
577
578 xdr_init_encode_pages(xdr, buf);
579 }
580
581 /*
582 * Read a portion of a directory.
583 */
584 static __be32
nfsd_proc_readdir(struct svc_rqst * rqstp)585 nfsd_proc_readdir(struct svc_rqst *rqstp)
586 {
587 struct nfsd_readdirargs *argp = rqstp->rq_argp;
588 struct nfsd_readdirres *resp = rqstp->rq_resp;
589 loff_t offset;
590
591 trace_nfsd_vfs_readdir(rqstp, &argp->fh, argp->count, argp->cookie);
592
593 nfsd_init_dirlist_pages(rqstp, resp, argp->count);
594
595 resp->common.err = nfs_ok;
596 resp->cookie_offset = 0;
597 offset = argp->cookie;
598 resp->status = nfsd_readdir(rqstp, &argp->fh, &offset,
599 &resp->common, nfssvc_encode_entry);
600 nfssvc_encode_nfscookie(resp, offset);
601
602 fh_put(&argp->fh);
603 resp->status = nfsd_map_status(resp->status);
604 return rpc_success;
605 }
606
607 /*
608 * Get file system info
609 */
610 static __be32
nfsd_proc_statfs(struct svc_rqst * rqstp)611 nfsd_proc_statfs(struct svc_rqst *rqstp)
612 {
613 struct nfsd_fhandle *argp = rqstp->rq_argp;
614 struct nfsd_statfsres *resp = rqstp->rq_resp;
615
616 resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
617 NFSD_MAY_BYPASS_GSS_ON_ROOT);
618 fh_put(&argp->fh);
619 resp->status = nfsd_map_status(resp->status);
620 return rpc_success;
621 }
622
623 /*
624 * NFSv2 Server procedures.
625 * Only the results of non-idempotent operations are cached.
626 */
627
628 #define ST 1 /* status */
629 #define FH 8 /* filehandle */
630 #define AT 18 /* attributes */
631
632 static const struct svc_procedure nfsd_procedures2[18] = {
633 [NFSPROC_NULL] = {
634 .pc_func = nfsd_proc_null,
635 .pc_decode = nfssvc_decode_voidarg,
636 .pc_encode = nfssvc_encode_voidres,
637 .pc_argsize = sizeof(struct nfsd_voidargs),
638 .pc_argzero = sizeof(struct nfsd_voidargs),
639 .pc_ressize = sizeof(struct nfsd_voidres),
640 .pc_cachetype = RC_NOCACHE,
641 .pc_xdrressize = 0,
642 .pc_name = "NULL",
643 },
644 [NFSPROC_GETATTR] = {
645 .pc_func = nfsd_proc_getattr,
646 .pc_decode = nfssvc_decode_fhandleargs,
647 .pc_encode = nfssvc_encode_attrstatres,
648 .pc_release = nfssvc_release_attrstat,
649 .pc_argsize = sizeof(struct nfsd_fhandle),
650 .pc_argzero = sizeof(struct nfsd_fhandle),
651 .pc_ressize = sizeof(struct nfsd_attrstat),
652 .pc_cachetype = RC_NOCACHE,
653 .pc_xdrressize = ST+AT,
654 .pc_name = "GETATTR",
655 },
656 [NFSPROC_SETATTR] = {
657 .pc_func = nfsd_proc_setattr,
658 .pc_decode = nfssvc_decode_sattrargs,
659 .pc_encode = nfssvc_encode_attrstatres,
660 .pc_release = nfssvc_release_attrstat,
661 .pc_argsize = sizeof(struct nfsd_sattrargs),
662 .pc_argzero = sizeof(struct nfsd_sattrargs),
663 .pc_ressize = sizeof(struct nfsd_attrstat),
664 .pc_cachetype = RC_REPLBUFF,
665 .pc_xdrressize = ST+AT,
666 .pc_name = "SETATTR",
667 },
668 [NFSPROC_ROOT] = {
669 .pc_func = nfsd_proc_root,
670 .pc_decode = nfssvc_decode_voidarg,
671 .pc_encode = nfssvc_encode_voidres,
672 .pc_argsize = sizeof(struct nfsd_voidargs),
673 .pc_argzero = sizeof(struct nfsd_voidargs),
674 .pc_ressize = sizeof(struct nfsd_voidres),
675 .pc_cachetype = RC_NOCACHE,
676 .pc_xdrressize = 0,
677 .pc_name = "ROOT",
678 },
679 [NFSPROC_LOOKUP] = {
680 .pc_func = nfsd_proc_lookup,
681 .pc_decode = nfssvc_decode_diropargs,
682 .pc_encode = nfssvc_encode_diropres,
683 .pc_release = nfssvc_release_diropres,
684 .pc_argsize = sizeof(struct nfsd_diropargs),
685 .pc_argzero = sizeof(struct nfsd_diropargs),
686 .pc_ressize = sizeof(struct nfsd_diropres),
687 .pc_cachetype = RC_NOCACHE,
688 .pc_xdrressize = ST+FH+AT,
689 .pc_name = "LOOKUP",
690 },
691 [NFSPROC_READLINK] = {
692 .pc_func = nfsd_proc_readlink,
693 .pc_decode = nfssvc_decode_fhandleargs,
694 .pc_encode = nfssvc_encode_readlinkres,
695 .pc_argsize = sizeof(struct nfsd_fhandle),
696 .pc_argzero = sizeof(struct nfsd_fhandle),
697 .pc_ressize = sizeof(struct nfsd_readlinkres),
698 .pc_cachetype = RC_NOCACHE,
699 .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
700 .pc_name = "READLINK",
701 },
702 [NFSPROC_READ] = {
703 .pc_func = nfsd_proc_read,
704 .pc_decode = nfssvc_decode_readargs,
705 .pc_encode = nfssvc_encode_readres,
706 .pc_release = nfssvc_release_readres,
707 .pc_argsize = sizeof(struct nfsd_readargs),
708 .pc_argzero = sizeof(struct nfsd_readargs),
709 .pc_ressize = sizeof(struct nfsd_readres),
710 .pc_cachetype = RC_NOCACHE,
711 .pc_xdrressize = ST+AT+1+NFS_MAXDATA/4,
712 .pc_name = "READ",
713 },
714 [NFSPROC_WRITECACHE] = {
715 .pc_func = nfsd_proc_writecache,
716 .pc_decode = nfssvc_decode_voidarg,
717 .pc_encode = nfssvc_encode_voidres,
718 .pc_argsize = sizeof(struct nfsd_voidargs),
719 .pc_argzero = sizeof(struct nfsd_voidargs),
720 .pc_ressize = sizeof(struct nfsd_voidres),
721 .pc_cachetype = RC_NOCACHE,
722 .pc_xdrressize = 0,
723 .pc_name = "WRITECACHE",
724 },
725 [NFSPROC_WRITE] = {
726 .pc_func = nfsd_proc_write,
727 .pc_decode = nfssvc_decode_writeargs,
728 .pc_encode = nfssvc_encode_attrstatres,
729 .pc_release = nfssvc_release_attrstat,
730 .pc_argsize = sizeof(struct nfsd_writeargs),
731 .pc_argzero = sizeof(struct nfsd_writeargs),
732 .pc_ressize = sizeof(struct nfsd_attrstat),
733 .pc_cachetype = RC_REPLBUFF,
734 .pc_xdrressize = ST+AT,
735 .pc_name = "WRITE",
736 },
737 [NFSPROC_CREATE] = {
738 .pc_func = nfsd_proc_create,
739 .pc_decode = nfssvc_decode_createargs,
740 .pc_encode = nfssvc_encode_diropres,
741 .pc_release = nfssvc_release_diropres,
742 .pc_argsize = sizeof(struct nfsd_createargs),
743 .pc_argzero = sizeof(struct nfsd_createargs),
744 .pc_ressize = sizeof(struct nfsd_diropres),
745 .pc_cachetype = RC_REPLBUFF,
746 .pc_xdrressize = ST+FH+AT,
747 .pc_name = "CREATE",
748 },
749 [NFSPROC_REMOVE] = {
750 .pc_func = nfsd_proc_remove,
751 .pc_decode = nfssvc_decode_diropargs,
752 .pc_encode = nfssvc_encode_statres,
753 .pc_argsize = sizeof(struct nfsd_diropargs),
754 .pc_argzero = sizeof(struct nfsd_diropargs),
755 .pc_ressize = sizeof(struct nfsd_stat),
756 .pc_cachetype = RC_REPLSTAT,
757 .pc_xdrressize = ST,
758 .pc_name = "REMOVE",
759 },
760 [NFSPROC_RENAME] = {
761 .pc_func = nfsd_proc_rename,
762 .pc_decode = nfssvc_decode_renameargs,
763 .pc_encode = nfssvc_encode_statres,
764 .pc_argsize = sizeof(struct nfsd_renameargs),
765 .pc_argzero = sizeof(struct nfsd_renameargs),
766 .pc_ressize = sizeof(struct nfsd_stat),
767 .pc_cachetype = RC_REPLSTAT,
768 .pc_xdrressize = ST,
769 .pc_name = "RENAME",
770 },
771 [NFSPROC_LINK] = {
772 .pc_func = nfsd_proc_link,
773 .pc_decode = nfssvc_decode_linkargs,
774 .pc_encode = nfssvc_encode_statres,
775 .pc_argsize = sizeof(struct nfsd_linkargs),
776 .pc_argzero = sizeof(struct nfsd_linkargs),
777 .pc_ressize = sizeof(struct nfsd_stat),
778 .pc_cachetype = RC_REPLSTAT,
779 .pc_xdrressize = ST,
780 .pc_name = "LINK",
781 },
782 [NFSPROC_SYMLINK] = {
783 .pc_func = nfsd_proc_symlink,
784 .pc_decode = nfssvc_decode_symlinkargs,
785 .pc_encode = nfssvc_encode_statres,
786 .pc_argsize = sizeof(struct nfsd_symlinkargs),
787 .pc_argzero = sizeof(struct nfsd_symlinkargs),
788 .pc_ressize = sizeof(struct nfsd_stat),
789 .pc_cachetype = RC_REPLSTAT,
790 .pc_xdrressize = ST,
791 .pc_name = "SYMLINK",
792 },
793 [NFSPROC_MKDIR] = {
794 .pc_func = nfsd_proc_mkdir,
795 .pc_decode = nfssvc_decode_createargs,
796 .pc_encode = nfssvc_encode_diropres,
797 .pc_release = nfssvc_release_diropres,
798 .pc_argsize = sizeof(struct nfsd_createargs),
799 .pc_argzero = sizeof(struct nfsd_createargs),
800 .pc_ressize = sizeof(struct nfsd_diropres),
801 .pc_cachetype = RC_REPLBUFF,
802 .pc_xdrressize = ST+FH+AT,
803 .pc_name = "MKDIR",
804 },
805 [NFSPROC_RMDIR] = {
806 .pc_func = nfsd_proc_rmdir,
807 .pc_decode = nfssvc_decode_diropargs,
808 .pc_encode = nfssvc_encode_statres,
809 .pc_argsize = sizeof(struct nfsd_diropargs),
810 .pc_argzero = sizeof(struct nfsd_diropargs),
811 .pc_ressize = sizeof(struct nfsd_stat),
812 .pc_cachetype = RC_REPLSTAT,
813 .pc_xdrressize = ST,
814 .pc_name = "RMDIR",
815 },
816 [NFSPROC_READDIR] = {
817 .pc_func = nfsd_proc_readdir,
818 .pc_decode = nfssvc_decode_readdirargs,
819 .pc_encode = nfssvc_encode_readdirres,
820 .pc_argsize = sizeof(struct nfsd_readdirargs),
821 .pc_argzero = sizeof(struct nfsd_readdirargs),
822 .pc_ressize = sizeof(struct nfsd_readdirres),
823 .pc_cachetype = RC_NOCACHE,
824 .pc_name = "READDIR",
825 },
826 [NFSPROC_STATFS] = {
827 .pc_func = nfsd_proc_statfs,
828 .pc_decode = nfssvc_decode_fhandleargs,
829 .pc_encode = nfssvc_encode_statfsres,
830 .pc_argsize = sizeof(struct nfsd_fhandle),
831 .pc_argzero = sizeof(struct nfsd_fhandle),
832 .pc_ressize = sizeof(struct nfsd_statfsres),
833 .pc_cachetype = RC_NOCACHE,
834 .pc_xdrressize = ST+5,
835 .pc_name = "STATFS",
836 },
837 };
838
839 static DEFINE_PER_CPU_ALIGNED(unsigned long,
840 nfsd_count2[ARRAY_SIZE(nfsd_procedures2)]);
841 const struct svc_version nfsd_version2 = {
842 .vs_vers = 2,
843 .vs_nproc = ARRAY_SIZE(nfsd_procedures2),
844 .vs_proc = nfsd_procedures2,
845 .vs_count = nfsd_count2,
846 .vs_dispatch = nfsd_dispatch,
847 .vs_xdrsize = NFS2_SVC_XDRSIZE,
848 };
849