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staging/irda/net: Drop extraneous parentheses around test
[linux-2.6/btrfs-unstable.git] / fs / nfsd / nfs3proc.c
blob1d0ce3c57d939d6de10418fe12cf4cd217d392e8
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Process version 3 NFS requests.
4 *
5 * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de>
6 */
7
8 #include <linux/fs.h>
9 #include <linux/ext2_fs.h>
10 #include <linux/magic.h>
11
12 #include "cache.h"
13 #include "xdr3.h"
14 #include "vfs.h"
15
16 #define NFSDDBG_FACILITY NFSDDBG_PROC
17
18 #define RETURN_STATUS(st) { resp->status = (st); return (st); }
19
20 static int nfs3_ftypes[] = {
21 0, /* NF3NON */
22 S_IFREG, /* NF3REG */
23 S_IFDIR, /* NF3DIR */
24 S_IFBLK, /* NF3BLK */
25 S_IFCHR, /* NF3CHR */
26 S_IFLNK, /* NF3LNK */
27 S_IFSOCK, /* NF3SOCK */
28 S_IFIFO, /* NF3FIFO */
29 };
30
31 /*
32 * NULL call.
33 */
34 static __be32
35 nfsd3_proc_null(struct svc_rqst *rqstp)
36 {
37 return nfs_ok;
38 }
39
40 /*
41 * Get a file's attributes
42 */
43 static __be32
44 nfsd3_proc_getattr(struct svc_rqst *rqstp)
45 {
46 struct nfsd_fhandle *argp = rqstp->rq_argp;
47 struct nfsd3_attrstat *resp = rqstp->rq_resp;
48 __be32 nfserr;
49
50 dprintk("nfsd: GETATTR(3) %s\n",
51 SVCFH_fmt(&argp->fh));
52
53 fh_copy(&resp->fh, &argp->fh);
54 nfserr = fh_verify(rqstp, &resp->fh, 0,
55 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
56 if (nfserr)
57 RETURN_STATUS(nfserr);
58
59 nfserr = fh_getattr(&resp->fh, &resp->stat);
60
61 RETURN_STATUS(nfserr);
62 }
63
64 /*
65 * Set a file's attributes
66 */
67 static __be32
68 nfsd3_proc_setattr(struct svc_rqst *rqstp)
69 {
70 struct nfsd3_sattrargs *argp = rqstp->rq_argp;
71 struct nfsd3_attrstat *resp = rqstp->rq_resp;
72 __be32 nfserr;
73
74 dprintk("nfsd: SETATTR(3) %s\n",
75 SVCFH_fmt(&argp->fh));
76
77 fh_copy(&resp->fh, &argp->fh);
78 nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,
79 argp->check_guard, argp->guardtime);
80 RETURN_STATUS(nfserr);
81 }
82
83 /*
84 * Look up a path name component
85 */
86 static __be32
87 nfsd3_proc_lookup(struct svc_rqst *rqstp)
88 {
89 struct nfsd3_diropargs *argp = rqstp->rq_argp;
90 struct nfsd3_diropres *resp = rqstp->rq_resp;
91 __be32 nfserr;
92
93 dprintk("nfsd: LOOKUP(3) %s %.*s\n",
94 SVCFH_fmt(&argp->fh),
95 argp->len,
96 argp->name);
97
98 fh_copy(&resp->dirfh, &argp->fh);
99 fh_init(&resp->fh, NFS3_FHSIZE);
100
101 nfserr = nfsd_lookup(rqstp, &resp->dirfh,
102 argp->name,
103 argp->len,
104 &resp->fh);
105 RETURN_STATUS(nfserr);
106 }
107
108 /*
109 * Check file access
110 */
111 static __be32
112 nfsd3_proc_access(struct svc_rqst *rqstp)
113 {
114 struct nfsd3_accessargs *argp = rqstp->rq_argp;
115 struct nfsd3_accessres *resp = rqstp->rq_resp;
116 __be32 nfserr;
117
118 dprintk("nfsd: ACCESS(3) %s 0x%x\n",
119 SVCFH_fmt(&argp->fh),
120 argp->access);
121
122 fh_copy(&resp->fh, &argp->fh);
123 resp->access = argp->access;
124 nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
125 RETURN_STATUS(nfserr);
126 }
127
128 /*
129 * Read a symlink.
130 */
131 static __be32
132 nfsd3_proc_readlink(struct svc_rqst *rqstp)
133 {
134 struct nfsd3_readlinkargs *argp = rqstp->rq_argp;
135 struct nfsd3_readlinkres *resp = rqstp->rq_resp;
136 __be32 nfserr;
137
138 dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh));
139
140 /* Read the symlink. */
141 fh_copy(&resp->fh, &argp->fh);
142 resp->len = NFS3_MAXPATHLEN;
143 nfserr = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len);
144 RETURN_STATUS(nfserr);
145 }
146
147 /*
148 * Read a portion of a file.
149 */
150 static __be32
151 nfsd3_proc_read(struct svc_rqst *rqstp)
152 {
153 struct nfsd3_readargs *argp = rqstp->rq_argp;
154 struct nfsd3_readres *resp = rqstp->rq_resp;
155 __be32 nfserr;
156 u32 max_blocksize = svc_max_payload(rqstp);
157 unsigned long cnt = min(argp->count, max_blocksize);
158
159 dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n",
160 SVCFH_fmt(&argp->fh),
161 (unsigned long) argp->count,
162 (unsigned long long) argp->offset);
163
164 /* Obtain buffer pointer for payload.
165 * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
166 * + 1 (xdr opaque byte count) = 26
167 */
168 resp->count = cnt;
169 svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4);
170
171 fh_copy(&resp->fh, &argp->fh);
172 nfserr = nfsd_read(rqstp, &resp->fh,
173 argp->offset,
174 rqstp->rq_vec, argp->vlen,
175 &resp->count);
176 if (nfserr == 0) {
177 struct inode *inode = d_inode(resp->fh.fh_dentry);
178 resp->eof = nfsd_eof_on_read(cnt, resp->count, argp->offset,
179 inode->i_size);
180 }
181
182 RETURN_STATUS(nfserr);
183 }
184
185 /*
186 * Write data to a file
187 */
188 static __be32
189 nfsd3_proc_write(struct svc_rqst *rqstp)
190 {
191 struct nfsd3_writeargs *argp = rqstp->rq_argp;
192 struct nfsd3_writeres *resp = rqstp->rq_resp;
193 __be32 nfserr;
194 unsigned long cnt = argp->len;
195
196 dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n",
197 SVCFH_fmt(&argp->fh),
198 argp->len,
199 (unsigned long long) argp->offset,
200 argp->stable? " stable" : "");
201
202 fh_copy(&resp->fh, &argp->fh);
203 resp->committed = argp->stable;
204 nfserr = nfsd_write(rqstp, &resp->fh, argp->offset,
205 rqstp->rq_vec, argp->vlen,
206 &cnt, resp->committed);
207 resp->count = cnt;
208 RETURN_STATUS(nfserr);
209 }
210
211 /*
212 * With NFSv3, CREATE processing is a lot easier than with NFSv2.
213 * At least in theory; we'll see how it fares in practice when the
214 * first reports about SunOS compatibility problems start to pour in...
215 */
216 static __be32
217 nfsd3_proc_create(struct svc_rqst *rqstp)
218 {
219 struct nfsd3_createargs *argp = rqstp->rq_argp;
220 struct nfsd3_diropres *resp = rqstp->rq_resp;
221 svc_fh *dirfhp, *newfhp = NULL;
222 struct iattr *attr;
223 __be32 nfserr;
224
225 dprintk("nfsd: CREATE(3) %s %.*s\n",
226 SVCFH_fmt(&argp->fh),
227 argp->len,
228 argp->name);
229
230 dirfhp = fh_copy(&resp->dirfh, &argp->fh);
231 newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
232 attr = &argp->attrs;
233
234 /* Unfudge the mode bits */
235 attr->ia_mode &= ~S_IFMT;
236 if (!(attr->ia_valid & ATTR_MODE)) {
237 attr->ia_valid |= ATTR_MODE;
238 attr->ia_mode = S_IFREG;
239 } else {
240 attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG;
241 }
242
243 /* Now create the file and set attributes */
244 nfserr = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len,
245 attr, newfhp,
246 argp->createmode, (u32 *)argp->verf, NULL, NULL);
247
248 RETURN_STATUS(nfserr);
249 }
250
251 /*
252 * Make directory. This operation is not idempotent.
253 */
254 static __be32
255 nfsd3_proc_mkdir(struct svc_rqst *rqstp)
256 {
257 struct nfsd3_createargs *argp = rqstp->rq_argp;
258 struct nfsd3_diropres *resp = rqstp->rq_resp;
259 __be32 nfserr;
260
261 dprintk("nfsd: MKDIR(3) %s %.*s\n",
262 SVCFH_fmt(&argp->fh),
263 argp->len,
264 argp->name);
265
266 argp->attrs.ia_valid &= ~ATTR_SIZE;
267 fh_copy(&resp->dirfh, &argp->fh);
268 fh_init(&resp->fh, NFS3_FHSIZE);
269 nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
270 &argp->attrs, S_IFDIR, 0, &resp->fh);
271 fh_unlock(&resp->dirfh);
272 RETURN_STATUS(nfserr);
273 }
274
275 static __be32
276 nfsd3_proc_symlink(struct svc_rqst *rqstp)
277 {
278 struct nfsd3_symlinkargs *argp = rqstp->rq_argp;
279 struct nfsd3_diropres *resp = rqstp->rq_resp;
280 __be32 nfserr;
281
282 dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n",
283 SVCFH_fmt(&argp->ffh),
284 argp->flen, argp->fname,
285 argp->tlen, argp->tname);
286
287 fh_copy(&resp->dirfh, &argp->ffh);
288 fh_init(&resp->fh, NFS3_FHSIZE);
289 nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen,
290 argp->tname, &resp->fh);
291 RETURN_STATUS(nfserr);
292 }
293
294 /*
295 * Make socket/fifo/device.
296 */
297 static __be32
298 nfsd3_proc_mknod(struct svc_rqst *rqstp)
299 {
300 struct nfsd3_mknodargs *argp = rqstp->rq_argp;
301 struct nfsd3_diropres *resp = rqstp->rq_resp;
302 __be32 nfserr;
303 int type;
304 dev_t rdev = 0;
305
306 dprintk("nfsd: MKNOD(3) %s %.*s\n",
307 SVCFH_fmt(&argp->fh),
308 argp->len,
309 argp->name);
310
311 fh_copy(&resp->dirfh, &argp->fh);
312 fh_init(&resp->fh, NFS3_FHSIZE);
313
314 if (argp->ftype == 0 || argp->ftype >= NF3BAD)
315 RETURN_STATUS(nfserr_inval);
316 if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
317 rdev = MKDEV(argp->major, argp->minor);
318 if (MAJOR(rdev) != argp->major ||
319 MINOR(rdev) != argp->minor)
320 RETURN_STATUS(nfserr_inval);
321 } else
322 if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO)
323 RETURN_STATUS(nfserr_inval);
324
325 type = nfs3_ftypes[argp->ftype];
326 nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
327 &argp->attrs, type, rdev, &resp->fh);
328 fh_unlock(&resp->dirfh);
329 RETURN_STATUS(nfserr);
330 }
331
332 /*
333 * Remove file/fifo/socket etc.
334 */
335 static __be32
336 nfsd3_proc_remove(struct svc_rqst *rqstp)
337 {
338 struct nfsd3_diropargs *argp = rqstp->rq_argp;
339 struct nfsd3_attrstat *resp = rqstp->rq_resp;
340 __be32 nfserr;
341
342 dprintk("nfsd: REMOVE(3) %s %.*s\n",
343 SVCFH_fmt(&argp->fh),
344 argp->len,
345 argp->name);
346
347 /* Unlink. -S_IFDIR means file must not be a directory */
348 fh_copy(&resp->fh, &argp->fh);
349 nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len);
350 fh_unlock(&resp->fh);
351 RETURN_STATUS(nfserr);
352 }
353
354 /*
355 * Remove a directory
356 */
357 static __be32
358 nfsd3_proc_rmdir(struct svc_rqst *rqstp)
359 {
360 struct nfsd3_diropargs *argp = rqstp->rq_argp;
361 struct nfsd3_attrstat *resp = rqstp->rq_resp;
362 __be32 nfserr;
363
364 dprintk("nfsd: RMDIR(3) %s %.*s\n",
365 SVCFH_fmt(&argp->fh),
366 argp->len,
367 argp->name);
368
369 fh_copy(&resp->fh, &argp->fh);
370 nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len);
371 fh_unlock(&resp->fh);
372 RETURN_STATUS(nfserr);
373 }
374
375 static __be32
376 nfsd3_proc_rename(struct svc_rqst *rqstp)
377 {
378 struct nfsd3_renameargs *argp = rqstp->rq_argp;
379 struct nfsd3_renameres *resp = rqstp->rq_resp;
380 __be32 nfserr;
381
382 dprintk("nfsd: RENAME(3) %s %.*s ->\n",
383 SVCFH_fmt(&argp->ffh),
384 argp->flen,
385 argp->fname);
386 dprintk("nfsd: -> %s %.*s\n",
387 SVCFH_fmt(&argp->tfh),
388 argp->tlen,
389 argp->tname);
390
391 fh_copy(&resp->ffh, &argp->ffh);
392 fh_copy(&resp->tfh, &argp->tfh);
393 nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
394 &resp->tfh, argp->tname, argp->tlen);
395 RETURN_STATUS(nfserr);
396 }
397
398 static __be32
399 nfsd3_proc_link(struct svc_rqst *rqstp)
400 {
401 struct nfsd3_linkargs *argp = rqstp->rq_argp;
402 struct nfsd3_linkres *resp = rqstp->rq_resp;
403 __be32 nfserr;
404
405 dprintk("nfsd: LINK(3) %s ->\n",
406 SVCFH_fmt(&argp->ffh));
407 dprintk("nfsd: -> %s %.*s\n",
408 SVCFH_fmt(&argp->tfh),
409 argp->tlen,
410 argp->tname);
411
412 fh_copy(&resp->fh, &argp->ffh);
413 fh_copy(&resp->tfh, &argp->tfh);
414 nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
415 &resp->fh);
416 RETURN_STATUS(nfserr);
417 }
418
419 /*
420 * Read a portion of a directory.
421 */
422 static __be32
423 nfsd3_proc_readdir(struct svc_rqst *rqstp)
424 {
425 struct nfsd3_readdirargs *argp = rqstp->rq_argp;
426 struct nfsd3_readdirres *resp = rqstp->rq_resp;
427 __be32 nfserr;
428 int count;
429
430 dprintk("nfsd: READDIR(3) %s %d bytes at %d\n",
431 SVCFH_fmt(&argp->fh),
432 argp->count, (u32) argp->cookie);
433
434 /* Make sure we've room for the NULL ptr & eof flag, and shrink to
435 * client read size */
436 count = (argp->count >> 2) - 2;
437
438 /* Read directory and encode entries on the fly */
439 fh_copy(&resp->fh, &argp->fh);
440
441 resp->buflen = count;
442 resp->common.err = nfs_ok;
443 resp->buffer = argp->buffer;
444 resp->rqstp = rqstp;
445 nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie,
446 &resp->common, nfs3svc_encode_entry);
447 memcpy(resp->verf, argp->verf, 8);
448 resp->count = resp->buffer - argp->buffer;
449 if (resp->offset)
450 xdr_encode_hyper(resp->offset, argp->cookie);
451
452 RETURN_STATUS(nfserr);
453 }
454
455 /*
456 * Read a portion of a directory, including file handles and attrs.
457 * For now, we choose to ignore the dircount parameter.
458 */
459 static __be32
460 nfsd3_proc_readdirplus(struct svc_rqst *rqstp)
461 {
462 struct nfsd3_readdirargs *argp = rqstp->rq_argp;
463 struct nfsd3_readdirres *resp = rqstp->rq_resp;
464 __be32 nfserr;
465 int count = 0;
466 loff_t offset;
467 struct page **p;
468 caddr_t page_addr = NULL;
469
470 dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n",
471 SVCFH_fmt(&argp->fh),
472 argp->count, (u32) argp->cookie);
473
474 /* Convert byte count to number of words (i.e. >> 2),
475 * and reserve room for the NULL ptr & eof flag (-2 words) */
476 resp->count = (argp->count >> 2) - 2;
477
478 /* Read directory and encode entries on the fly */
479 fh_copy(&resp->fh, &argp->fh);
480
481 resp->common.err = nfs_ok;
482 resp->buffer = argp->buffer;
483 resp->buflen = resp->count;
484 resp->rqstp = rqstp;
485 offset = argp->cookie;
486
487 nfserr = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP);
488 if (nfserr)
489 RETURN_STATUS(nfserr);
490
491 if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS)
492 RETURN_STATUS(nfserr_notsupp);
493
494 nfserr = nfsd_readdir(rqstp, &resp->fh,
495 &offset,
496 &resp->common,
497 nfs3svc_encode_entry_plus);
498 memcpy(resp->verf, argp->verf, 8);
499 for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) {
500 page_addr = page_address(*p);
501
502 if (((caddr_t)resp->buffer >= page_addr) &&
503 ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) {
504 count += (caddr_t)resp->buffer - page_addr;
505 break;
506 }
507 count += PAGE_SIZE;
508 }
509 resp->count = count >> 2;
510 if (resp->offset) {
511 if (unlikely(resp->offset1)) {
512 /* we ended up with offset on a page boundary */
513 *resp->offset = htonl(offset >> 32);
514 *resp->offset1 = htonl(offset & 0xffffffff);
515 resp->offset1 = NULL;
516 } else {
517 xdr_encode_hyper(resp->offset, offset);
518 }
519 }
520
521 RETURN_STATUS(nfserr);
522 }
523
524 /*
525 * Get file system stats
526 */
527 static __be32
528 nfsd3_proc_fsstat(struct svc_rqst *rqstp)
529 {
530 struct nfsd_fhandle *argp = rqstp->rq_argp;
531 struct nfsd3_fsstatres *resp = rqstp->rq_resp;
532 __be32 nfserr;
533
534 dprintk("nfsd: FSSTAT(3) %s\n",
535 SVCFH_fmt(&argp->fh));
536
537 nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
538 fh_put(&argp->fh);
539 RETURN_STATUS(nfserr);
540 }
541
542 /*
543 * Get file system info
544 */
545 static __be32
546 nfsd3_proc_fsinfo(struct svc_rqst *rqstp)
547 {
548 struct nfsd_fhandle *argp = rqstp->rq_argp;
549 struct nfsd3_fsinfores *resp = rqstp->rq_resp;
550 __be32 nfserr;
551 u32 max_blocksize = svc_max_payload(rqstp);
552
553 dprintk("nfsd: FSINFO(3) %s\n",
554 SVCFH_fmt(&argp->fh));
555
556 resp->f_rtmax = max_blocksize;
557 resp->f_rtpref = max_blocksize;
558 resp->f_rtmult = PAGE_SIZE;
559 resp->f_wtmax = max_blocksize;
560 resp->f_wtpref = max_blocksize;
561 resp->f_wtmult = PAGE_SIZE;
562 resp->f_dtpref = PAGE_SIZE;
563 resp->f_maxfilesize = ~(u32) 0;
564 resp->f_properties = NFS3_FSF_DEFAULT;
565
566 nfserr = fh_verify(rqstp, &argp->fh, 0,
567 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
568
569 /* Check special features of the file system. May request
570 * different read/write sizes for file systems known to have
571 * problems with large blocks */
572 if (nfserr == 0) {
573 struct super_block *sb = argp->fh.fh_dentry->d_sb;
574
575 /* Note that we don't care for remote fs's here */
576 if (sb->s_magic == MSDOS_SUPER_MAGIC) {
577 resp->f_properties = NFS3_FSF_BILLYBOY;
578 }
579 resp->f_maxfilesize = sb->s_maxbytes;
580 }
581
582 fh_put(&argp->fh);
583 RETURN_STATUS(nfserr);
584 }
585
586 /*
587 * Get pathconf info for the specified file
588 */
589 static __be32
590 nfsd3_proc_pathconf(struct svc_rqst *rqstp)
591 {
592 struct nfsd_fhandle *argp = rqstp->rq_argp;
593 struct nfsd3_pathconfres *resp = rqstp->rq_resp;
594 __be32 nfserr;
595
596 dprintk("nfsd: PATHCONF(3) %s\n",
597 SVCFH_fmt(&argp->fh));
598
599 /* Set default pathconf */
600 resp->p_link_max = 255; /* at least */
601 resp->p_name_max = 255; /* at least */
602 resp->p_no_trunc = 0;
603 resp->p_chown_restricted = 1;
604 resp->p_case_insensitive = 0;
605 resp->p_case_preserving = 1;
606
607 nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
608
609 if (nfserr == 0) {
610 struct super_block *sb = argp->fh.fh_dentry->d_sb;
611
612 /* Note that we don't care for remote fs's here */
613 switch (sb->s_magic) {
614 case EXT2_SUPER_MAGIC:
615 resp->p_link_max = EXT2_LINK_MAX;
616 resp->p_name_max = EXT2_NAME_LEN;
617 break;
618 case MSDOS_SUPER_MAGIC:
619 resp->p_case_insensitive = 1;
620 resp->p_case_preserving = 0;
621 break;
622 }
623 }
624
625 fh_put(&argp->fh);
626 RETURN_STATUS(nfserr);
627 }
628
629
630 /*
631 * Commit a file (range) to stable storage.
632 */
633 static __be32
634 nfsd3_proc_commit(struct svc_rqst *rqstp)
635 {
636 struct nfsd3_commitargs *argp = rqstp->rq_argp;
637 struct nfsd3_commitres *resp = rqstp->rq_resp;
638 __be32 nfserr;
639
640 dprintk("nfsd: COMMIT(3) %s %u@%Lu\n",
641 SVCFH_fmt(&argp->fh),
642 argp->count,
643 (unsigned long long) argp->offset);
644
645 if (argp->offset > NFS_OFFSET_MAX)
646 RETURN_STATUS(nfserr_inval);
647
648 fh_copy(&resp->fh, &argp->fh);
649 nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count);
650
651 RETURN_STATUS(nfserr);
652 }
653
654
655 /*
656 * NFSv3 Server procedures.
657 * Only the results of non-idempotent operations are cached.
658 */
659 #define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle
660 #define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
661 #define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
662 #define nfsd3_mkdirargs nfsd3_createargs
663 #define nfsd3_readdirplusargs nfsd3_readdirargs
664 #define nfsd3_fhandleargs nfsd_fhandle
665 #define nfsd3_fhandleres nfsd3_attrstat
666 #define nfsd3_attrstatres nfsd3_attrstat
667 #define nfsd3_wccstatres nfsd3_attrstat
668 #define nfsd3_createres nfsd3_diropres
669 #define nfsd3_voidres nfsd3_voidargs
670 struct nfsd3_voidargs { int dummy; };
671
672 #define ST 1 /* status*/
673 #define FH 17 /* filehandle with length */
674 #define AT 21 /* attributes */
675 #define pAT (1+AT) /* post attributes - conditional */
676 #define WC (7+pAT) /* WCC attributes */
677
678 static const struct svc_procedure nfsd_procedures3[22] = {
679 [NFS3PROC_NULL] = {
680 .pc_func = nfsd3_proc_null,
681 .pc_encode = nfs3svc_encode_voidres,
682 .pc_argsize = sizeof(struct nfsd3_voidargs),
683 .pc_ressize = sizeof(struct nfsd3_voidres),
684 .pc_cachetype = RC_NOCACHE,
685 .pc_xdrressize = ST,
686 },
687 [NFS3PROC_GETATTR] = {
688 .pc_func = nfsd3_proc_getattr,
689 .pc_decode = nfs3svc_decode_fhandleargs,
690 .pc_encode = nfs3svc_encode_attrstatres,
691 .pc_release = nfs3svc_release_fhandle,
692 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
693 .pc_ressize = sizeof(struct nfsd3_attrstatres),
694 .pc_cachetype = RC_NOCACHE,
695 .pc_xdrressize = ST+AT,
696 },
697 [NFS3PROC_SETATTR] = {
698 .pc_func = nfsd3_proc_setattr,
699 .pc_decode = nfs3svc_decode_sattrargs,
700 .pc_encode = nfs3svc_encode_wccstatres,
701 .pc_release = nfs3svc_release_fhandle,
702 .pc_argsize = sizeof(struct nfsd3_sattrargs),
703 .pc_ressize = sizeof(struct nfsd3_wccstatres),
704 .pc_cachetype = RC_REPLBUFF,
705 .pc_xdrressize = ST+WC,
706 },
707 [NFS3PROC_LOOKUP] = {
708 .pc_func = nfsd3_proc_lookup,
709 .pc_decode = nfs3svc_decode_diropargs,
710 .pc_encode = nfs3svc_encode_diropres,
711 .pc_release = nfs3svc_release_fhandle2,
712 .pc_argsize = sizeof(struct nfsd3_diropargs),
713 .pc_ressize = sizeof(struct nfsd3_diropres),
714 .pc_cachetype = RC_NOCACHE,
715 .pc_xdrressize = ST+FH+pAT+pAT,
716 },
717 [NFS3PROC_ACCESS] = {
718 .pc_func = nfsd3_proc_access,
719 .pc_decode = nfs3svc_decode_accessargs,
720 .pc_encode = nfs3svc_encode_accessres,
721 .pc_release = nfs3svc_release_fhandle,
722 .pc_argsize = sizeof(struct nfsd3_accessargs),
723 .pc_ressize = sizeof(struct nfsd3_accessres),
724 .pc_cachetype = RC_NOCACHE,
725 .pc_xdrressize = ST+pAT+1,
726 },
727 [NFS3PROC_READLINK] = {
728 .pc_func = nfsd3_proc_readlink,
729 .pc_decode = nfs3svc_decode_readlinkargs,
730 .pc_encode = nfs3svc_encode_readlinkres,
731 .pc_release = nfs3svc_release_fhandle,
732 .pc_argsize = sizeof(struct nfsd3_readlinkargs),
733 .pc_ressize = sizeof(struct nfsd3_readlinkres),
734 .pc_cachetype = RC_NOCACHE,
735 .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4,
736 },
737 [NFS3PROC_READ] = {
738 .pc_func = nfsd3_proc_read,
739 .pc_decode = nfs3svc_decode_readargs,
740 .pc_encode = nfs3svc_encode_readres,
741 .pc_release = nfs3svc_release_fhandle,
742 .pc_argsize = sizeof(struct nfsd3_readargs),
743 .pc_ressize = sizeof(struct nfsd3_readres),
744 .pc_cachetype = RC_NOCACHE,
745 .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4,
746 },
747 [NFS3PROC_WRITE] = {
748 .pc_func = nfsd3_proc_write,
749 .pc_decode = nfs3svc_decode_writeargs,
750 .pc_encode = nfs3svc_encode_writeres,
751 .pc_release = nfs3svc_release_fhandle,
752 .pc_argsize = sizeof(struct nfsd3_writeargs),
753 .pc_ressize = sizeof(struct nfsd3_writeres),
754 .pc_cachetype = RC_REPLBUFF,
755 .pc_xdrressize = ST+WC+4,
756 },
757 [NFS3PROC_CREATE] = {
758 .pc_func = nfsd3_proc_create,
759 .pc_decode = nfs3svc_decode_createargs,
760 .pc_encode = nfs3svc_encode_createres,
761 .pc_release = nfs3svc_release_fhandle2,
762 .pc_argsize = sizeof(struct nfsd3_createargs),
763 .pc_ressize = sizeof(struct nfsd3_createres),
764 .pc_cachetype = RC_REPLBUFF,
765 .pc_xdrressize = ST+(1+FH+pAT)+WC,
766 },
767 [NFS3PROC_MKDIR] = {
768 .pc_func = nfsd3_proc_mkdir,
769 .pc_decode = nfs3svc_decode_mkdirargs,
770 .pc_encode = nfs3svc_encode_createres,
771 .pc_release = nfs3svc_release_fhandle2,
772 .pc_argsize = sizeof(struct nfsd3_mkdirargs),
773 .pc_ressize = sizeof(struct nfsd3_createres),
774 .pc_cachetype = RC_REPLBUFF,
775 .pc_xdrressize = ST+(1+FH+pAT)+WC,
776 },
777 [NFS3PROC_SYMLINK] = {
778 .pc_func = nfsd3_proc_symlink,
779 .pc_decode = nfs3svc_decode_symlinkargs,
780 .pc_encode = nfs3svc_encode_createres,
781 .pc_release = nfs3svc_release_fhandle2,
782 .pc_argsize = sizeof(struct nfsd3_symlinkargs),
783 .pc_ressize = sizeof(struct nfsd3_createres),
784 .pc_cachetype = RC_REPLBUFF,
785 .pc_xdrressize = ST+(1+FH+pAT)+WC,
786 },
787 [NFS3PROC_MKNOD] = {
788 .pc_func = nfsd3_proc_mknod,
789 .pc_decode = nfs3svc_decode_mknodargs,
790 .pc_encode = nfs3svc_encode_createres,
791 .pc_release = nfs3svc_release_fhandle2,
792 .pc_argsize = sizeof(struct nfsd3_mknodargs),
793 .pc_ressize = sizeof(struct nfsd3_createres),
794 .pc_cachetype = RC_REPLBUFF,
795 .pc_xdrressize = ST+(1+FH+pAT)+WC,
796 },
797 [NFS3PROC_REMOVE] = {
798 .pc_func = nfsd3_proc_remove,
799 .pc_decode = nfs3svc_decode_diropargs,
800 .pc_encode = nfs3svc_encode_wccstatres,
801 .pc_release = nfs3svc_release_fhandle,
802 .pc_argsize = sizeof(struct nfsd3_diropargs),
803 .pc_ressize = sizeof(struct nfsd3_wccstatres),
804 .pc_cachetype = RC_REPLBUFF,
805 .pc_xdrressize = ST+WC,
806 },
807 [NFS3PROC_RMDIR] = {
808 .pc_func = nfsd3_proc_rmdir,
809 .pc_decode = nfs3svc_decode_diropargs,
810 .pc_encode = nfs3svc_encode_wccstatres,
811 .pc_release = nfs3svc_release_fhandle,
812 .pc_argsize = sizeof(struct nfsd3_diropargs),
813 .pc_ressize = sizeof(struct nfsd3_wccstatres),
814 .pc_cachetype = RC_REPLBUFF,
815 .pc_xdrressize = ST+WC,
816 },
817 [NFS3PROC_RENAME] = {
818 .pc_func = nfsd3_proc_rename,
819 .pc_decode = nfs3svc_decode_renameargs,
820 .pc_encode = nfs3svc_encode_renameres,
821 .pc_release = nfs3svc_release_fhandle2,
822 .pc_argsize = sizeof(struct nfsd3_renameargs),
823 .pc_ressize = sizeof(struct nfsd3_renameres),
824 .pc_cachetype = RC_REPLBUFF,
825 .pc_xdrressize = ST+WC+WC,
826 },
827 [NFS3PROC_LINK] = {
828 .pc_func = nfsd3_proc_link,
829 .pc_decode = nfs3svc_decode_linkargs,
830 .pc_encode = nfs3svc_encode_linkres,
831 .pc_release = nfs3svc_release_fhandle2,
832 .pc_argsize = sizeof(struct nfsd3_linkargs),
833 .pc_ressize = sizeof(struct nfsd3_linkres),
834 .pc_cachetype = RC_REPLBUFF,
835 .pc_xdrressize = ST+pAT+WC,
836 },
837 [NFS3PROC_READDIR] = {
838 .pc_func = nfsd3_proc_readdir,
839 .pc_decode = nfs3svc_decode_readdirargs,
840 .pc_encode = nfs3svc_encode_readdirres,
841 .pc_release = nfs3svc_release_fhandle,
842 .pc_argsize = sizeof(struct nfsd3_readdirargs),
843 .pc_ressize = sizeof(struct nfsd3_readdirres),
844 .pc_cachetype = RC_NOCACHE,
845 },
846 [NFS3PROC_READDIRPLUS] = {
847 .pc_func = nfsd3_proc_readdirplus,
848 .pc_decode = nfs3svc_decode_readdirplusargs,
849 .pc_encode = nfs3svc_encode_readdirres,
850 .pc_release = nfs3svc_release_fhandle,
851 .pc_argsize = sizeof(struct nfsd3_readdirplusargs),
852 .pc_ressize = sizeof(struct nfsd3_readdirres),
853 .pc_cachetype = RC_NOCACHE,
854 },
855 [NFS3PROC_FSSTAT] = {
856 .pc_func = nfsd3_proc_fsstat,
857 .pc_decode = nfs3svc_decode_fhandleargs,
858 .pc_encode = nfs3svc_encode_fsstatres,
859 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
860 .pc_ressize = sizeof(struct nfsd3_fsstatres),
861 .pc_cachetype = RC_NOCACHE,
862 .pc_xdrressize = ST+pAT+2*6+1,
863 },
864 [NFS3PROC_FSINFO] = {
865 .pc_func = nfsd3_proc_fsinfo,
866 .pc_decode = nfs3svc_decode_fhandleargs,
867 .pc_encode = nfs3svc_encode_fsinfores,
868 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
869 .pc_ressize = sizeof(struct nfsd3_fsinfores),
870 .pc_cachetype = RC_NOCACHE,
871 .pc_xdrressize = ST+pAT+12,
872 },
873 [NFS3PROC_PATHCONF] = {
874 .pc_func = nfsd3_proc_pathconf,
875 .pc_decode = nfs3svc_decode_fhandleargs,
876 .pc_encode = nfs3svc_encode_pathconfres,
877 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
878 .pc_ressize = sizeof(struct nfsd3_pathconfres),
879 .pc_cachetype = RC_NOCACHE,
880 .pc_xdrressize = ST+pAT+6,
881 },
882 [NFS3PROC_COMMIT] = {
883 .pc_func = nfsd3_proc_commit,
884 .pc_decode = nfs3svc_decode_commitargs,
885 .pc_encode = nfs3svc_encode_commitres,
886 .pc_release = nfs3svc_release_fhandle,
887 .pc_argsize = sizeof(struct nfsd3_commitargs),
888 .pc_ressize = sizeof(struct nfsd3_commitres),
889 .pc_cachetype = RC_NOCACHE,
890 .pc_xdrressize = ST+WC+2,
891 },
892 };
893
894 static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures3)];
895 const struct svc_version nfsd_version3 = {
896 .vs_vers = 3,
897 .vs_nproc = 22,
898 .vs_proc = nfsd_procedures3,
899 .vs_dispatch = nfsd_dispatch,
900 .vs_count = nfsd_count3,
901 .vs_xdrsize = NFS3_SVC_XDRSIZE,
902 };
(deprecated) Btrfs devel tree