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1/*
2 * Process version 3 NFS requests.
3 *
4 * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de>
5 */
6
7#include <linux/fs.h>
8#include <linux/ext2_fs.h>
9#include <linux/magic.h>
10
11#include "cache.h"
12#include "xdr3.h"
13#include "vfs.h"
14
15#define NFSDDBG_FACILITY NFSDDBG_PROC
16
17#define RETURN_STATUS(st) { resp->status = (st); return (st); }
18
19static int nfs3_ftypes[] = {
20 0, /* NF3NON */
21 S_IFREG, /* NF3REG */
22 S_IFDIR, /* NF3DIR */
23 S_IFBLK, /* NF3BLK */
24 S_IFCHR, /* NF3CHR */
25 S_IFLNK, /* NF3LNK */
26 S_IFSOCK, /* NF3SOCK */
27 S_IFIFO, /* NF3FIFO */
28};
29
30/*
31 * NULL call.
32 */
33static __be32
34nfsd3_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
35{
36 return nfs_ok;
37}
38
39/*
40 * Get a file's attributes
41 */
42static __be32
43nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp,
44 struct nfsd3_attrstat *resp)
45{
46 __be32 nfserr;
47
48 dprintk("nfsd: GETATTR(3) %s\n",
49 SVCFH_fmt(&argp->fh));
50
51 fh_copy(&resp->fh, &argp->fh);
52 nfserr = fh_verify(rqstp, &resp->fh, 0,
53 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
54 if (nfserr)
55 RETURN_STATUS(nfserr);
56
57 nfserr = fh_getattr(&resp->fh, &resp->stat);
58
59 RETURN_STATUS(nfserr);
60}
61
62/*
63 * Set a file's attributes
64 */
65static __be32
66nfsd3_proc_setattr(struct svc_rqst *rqstp, struct nfsd3_sattrargs *argp,
67 struct nfsd3_attrstat *resp)
68{
69 __be32 nfserr;
70
71 dprintk("nfsd: SETATTR(3) %s\n",
72 SVCFH_fmt(&argp->fh));
73
74 fh_copy(&resp->fh, &argp->fh);
75 nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,
76 argp->check_guard, argp->guardtime);
77 RETURN_STATUS(nfserr);
78}
79
80/*
81 * Look up a path name component
82 */
83static __be32
84nfsd3_proc_lookup(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
85 struct nfsd3_diropres *resp)
86{
87 __be32 nfserr;
88
89 dprintk("nfsd: LOOKUP(3) %s %.*s\n",
90 SVCFH_fmt(&argp->fh),
91 argp->len,
92 argp->name);
93
94 fh_copy(&resp->dirfh, &argp->fh);
95 fh_init(&resp->fh, NFS3_FHSIZE);
96
97 nfserr = nfsd_lookup(rqstp, &resp->dirfh,
98 argp->name,
99 argp->len,
100 &resp->fh);
101 RETURN_STATUS(nfserr);
102}
103
104/*
105 * Check file access
106 */
107static __be32
108nfsd3_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp,
109 struct nfsd3_accessres *resp)
110{
111 __be32 nfserr;
112
113 dprintk("nfsd: ACCESS(3) %s 0x%x\n",
114 SVCFH_fmt(&argp->fh),
115 argp->access);
116
117 fh_copy(&resp->fh, &argp->fh);
118 resp->access = argp->access;
119 nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
120 RETURN_STATUS(nfserr);
121}
122
123/*
124 * Read a symlink.
125 */
126static __be32
127nfsd3_proc_readlink(struct svc_rqst *rqstp, struct nfsd3_readlinkargs *argp,
128 struct nfsd3_readlinkres *resp)
129{
130 __be32 nfserr;
131
132 dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh));
133
134 /* Read the symlink. */
135 fh_copy(&resp->fh, &argp->fh);
136 resp->len = NFS3_MAXPATHLEN;
137 nfserr = nfsd_readlink(rqstp, &resp->fh, argp->buffer, &resp->len);
138 RETURN_STATUS(nfserr);
139}
140
141/*
142 * Read a portion of a file.
143 */
144static __be32
145nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp,
146 struct nfsd3_readres *resp)
147{
148 __be32 nfserr;
149 u32 max_blocksize = svc_max_payload(rqstp);
150
151 dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n",
152 SVCFH_fmt(&argp->fh),
153 (unsigned long) argp->count,
154 (unsigned long long) argp->offset);
155
156 /* Obtain buffer pointer for payload.
157 * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
158 * + 1 (xdr opaque byte count) = 26
159 */
160
161 resp->count = argp->count;
162 if (max_blocksize < resp->count)
163 resp->count = max_blocksize;
164
165 svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4);
166
167 fh_copy(&resp->fh, &argp->fh);
168 nfserr = nfsd_read(rqstp, &resp->fh,
169 argp->offset,
170 rqstp->rq_vec, argp->vlen,
171 &resp->count);
172 if (nfserr == 0) {
173 struct inode *inode = resp->fh.fh_dentry->d_inode;
174
175 resp->eof = (argp->offset + resp->count) >= inode->i_size;
176 }
177
178 RETURN_STATUS(nfserr);
179}
180
181/*
182 * Write data to a file
183 */
184static __be32
185nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp,
186 struct nfsd3_writeres *resp)
187{
188 __be32 nfserr;
189 unsigned long cnt = argp->len;
190
191 dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n",
192 SVCFH_fmt(&argp->fh),
193 argp->len,
194 (unsigned long long) argp->offset,
195 argp->stable? " stable" : "");
196
197 fh_copy(&resp->fh, &argp->fh);
198 resp->committed = argp->stable;
199 nfserr = nfsd_write(rqstp, &resp->fh, NULL,
200 argp->offset,
201 rqstp->rq_vec, argp->vlen,
202 &cnt,
203 &resp->committed);
204 resp->count = cnt;
205 RETURN_STATUS(nfserr);
206}
207
208/*
209 * With NFSv3, CREATE processing is a lot easier than with NFSv2.
210 * At least in theory; we'll see how it fares in practice when the
211 * first reports about SunOS compatibility problems start to pour in...
212 */
213static __be32
214nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
215 struct nfsd3_diropres *resp)
216{
217 svc_fh *dirfhp, *newfhp = NULL;
218 struct iattr *attr;
219 __be32 nfserr;
220
221 dprintk("nfsd: CREATE(3) %s %.*s\n",
222 SVCFH_fmt(&argp->fh),
223 argp->len,
224 argp->name);
225
226 dirfhp = fh_copy(&resp->dirfh, &argp->fh);
227 newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
228 attr = &argp->attrs;
229
230 /* Get the directory inode */
231 nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_CREATE);
232 if (nfserr)
233 RETURN_STATUS(nfserr);
234
235 /* Unfudge the mode bits */
236 attr->ia_mode &= ~S_IFMT;
237 if (!(attr->ia_valid & ATTR_MODE)) {
238 attr->ia_valid |= ATTR_MODE;
239 attr->ia_mode = S_IFREG;
240 } else {
241 attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG;
242 }
243
244 /* Now create the file and set attributes */
245 nfserr = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len,
246 attr, newfhp,
247 argp->createmode, (u32 *)argp->verf, NULL, NULL);
248
249 RETURN_STATUS(nfserr);
250}
251
252/*
253 * Make directory. This operation is not idempotent.
254 */
255static __be32
256nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
257 struct nfsd3_diropres *resp)
258{
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
275static __be32
276nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp,
277 struct nfsd3_diropres *resp)
278{
279 __be32 nfserr;
280
281 dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n",
282 SVCFH_fmt(&argp->ffh),
283 argp->flen, argp->fname,
284 argp->tlen, argp->tname);
285
286 fh_copy(&resp->dirfh, &argp->ffh);
287 fh_init(&resp->fh, NFS3_FHSIZE);
288 nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen,
289 argp->tname, argp->tlen,
290 &resp->fh, &argp->attrs);
291 RETURN_STATUS(nfserr);
292}
293
294/*
295 * Make socket/fifo/device.
296 */
297static __be32
298nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp,
299 struct nfsd3_diropres *resp)
300{
301 __be32 nfserr;
302 int type;
303 dev_t rdev = 0;
304
305 dprintk("nfsd: MKNOD(3) %s %.*s\n",
306 SVCFH_fmt(&argp->fh),
307 argp->len,
308 argp->name);
309
310 fh_copy(&resp->dirfh, &argp->fh);
311 fh_init(&resp->fh, NFS3_FHSIZE);
312
313 if (argp->ftype == 0 || argp->ftype >= NF3BAD)
314 RETURN_STATUS(nfserr_inval);
315 if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
316 rdev = MKDEV(argp->major, argp->minor);
317 if (MAJOR(rdev) != argp->major ||
318 MINOR(rdev) != argp->minor)
319 RETURN_STATUS(nfserr_inval);
320 } else
321 if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO)
322 RETURN_STATUS(nfserr_inval);
323
324 type = nfs3_ftypes[argp->ftype];
325 nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
326 &argp->attrs, type, rdev, &resp->fh);
327 fh_unlock(&resp->dirfh);
328 RETURN_STATUS(nfserr);
329}
330
331/*
332 * Remove file/fifo/socket etc.
333 */
334static __be32
335nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
336 struct nfsd3_attrstat *resp)
337{
338 __be32 nfserr;
339
340 dprintk("nfsd: REMOVE(3) %s %.*s\n",
341 SVCFH_fmt(&argp->fh),
342 argp->len,
343 argp->name);
344
345 /* Unlink. -S_IFDIR means file must not be a directory */
346 fh_copy(&resp->fh, &argp->fh);
347 nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len);
348 fh_unlock(&resp->fh);
349 RETURN_STATUS(nfserr);
350}
351
352/*
353 * Remove a directory
354 */
355static __be32
356nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
357 struct nfsd3_attrstat *resp)
358{
359 __be32 nfserr;
360
361 dprintk("nfsd: RMDIR(3) %s %.*s\n",
362 SVCFH_fmt(&argp->fh),
363 argp->len,
364 argp->name);
365
366 fh_copy(&resp->fh, &argp->fh);
367 nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len);
368 fh_unlock(&resp->fh);
369 RETURN_STATUS(nfserr);
370}
371
372static __be32
373nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp,
374 struct nfsd3_renameres *resp)
375{
376 __be32 nfserr;
377
378 dprintk("nfsd: RENAME(3) %s %.*s ->\n",
379 SVCFH_fmt(&argp->ffh),
380 argp->flen,
381 argp->fname);
382 dprintk("nfsd: -> %s %.*s\n",
383 SVCFH_fmt(&argp->tfh),
384 argp->tlen,
385 argp->tname);
386
387 fh_copy(&resp->ffh, &argp->ffh);
388 fh_copy(&resp->tfh, &argp->tfh);
389 nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
390 &resp->tfh, argp->tname, argp->tlen);
391 RETURN_STATUS(nfserr);
392}
393
394static __be32
395nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp,
396 struct nfsd3_linkres *resp)
397{
398 __be32 nfserr;
399
400 dprintk("nfsd: LINK(3) %s ->\n",
401 SVCFH_fmt(&argp->ffh));
402 dprintk("nfsd: -> %s %.*s\n",
403 SVCFH_fmt(&argp->tfh),
404 argp->tlen,
405 argp->tname);
406
407 fh_copy(&resp->fh, &argp->ffh);
408 fh_copy(&resp->tfh, &argp->tfh);
409 nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
410 &resp->fh);
411 RETURN_STATUS(nfserr);
412}
413
414/*
415 * Read a portion of a directory.
416 */
417static __be32
418nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
419 struct nfsd3_readdirres *resp)
420{
421 __be32 nfserr;
422 int count;
423
424 dprintk("nfsd: READDIR(3) %s %d bytes at %d\n",
425 SVCFH_fmt(&argp->fh),
426 argp->count, (u32) argp->cookie);
427
428 /* Make sure we've room for the NULL ptr & eof flag, and shrink to
429 * client read size */
430 count = (argp->count >> 2) - 2;
431
432 /* Read directory and encode entries on the fly */
433 fh_copy(&resp->fh, &argp->fh);
434
435 resp->buflen = count;
436 resp->common.err = nfs_ok;
437 resp->buffer = argp->buffer;
438 resp->rqstp = rqstp;
439 nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie,
440 &resp->common, nfs3svc_encode_entry);
441 memcpy(resp->verf, argp->verf, 8);
442 resp->count = resp->buffer - argp->buffer;
443 if (resp->offset)
444 xdr_encode_hyper(resp->offset, argp->cookie);
445
446 RETURN_STATUS(nfserr);
447}
448
449/*
450 * Read a portion of a directory, including file handles and attrs.
451 * For now, we choose to ignore the dircount parameter.
452 */
453static __be32
454nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
455 struct nfsd3_readdirres *resp)
456{
457 __be32 nfserr;
458 int count = 0;
459 loff_t offset;
460 struct page **p;
461 caddr_t page_addr = NULL;
462
463 dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n",
464 SVCFH_fmt(&argp->fh),
465 argp->count, (u32) argp->cookie);
466
467 /* Convert byte count to number of words (i.e. >> 2),
468 * and reserve room for the NULL ptr & eof flag (-2 words) */
469 resp->count = (argp->count >> 2) - 2;
470
471 /* Read directory and encode entries on the fly */
472 fh_copy(&resp->fh, &argp->fh);
473
474 resp->common.err = nfs_ok;
475 resp->buffer = argp->buffer;
476 resp->buflen = resp->count;
477 resp->rqstp = rqstp;
478 offset = argp->cookie;
479 nfserr = nfsd_readdir(rqstp, &resp->fh,
480 &offset,
481 &resp->common,
482 nfs3svc_encode_entry_plus);
483 memcpy(resp->verf, argp->verf, 8);
484 for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) {
485 page_addr = page_address(*p);
486
487 if (((caddr_t)resp->buffer >= page_addr) &&
488 ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) {
489 count += (caddr_t)resp->buffer - page_addr;
490 break;
491 }
492 count += PAGE_SIZE;
493 }
494 resp->count = count >> 2;
495 if (resp->offset) {
496 if (unlikely(resp->offset1)) {
497 /* we ended up with offset on a page boundary */
498 *resp->offset = htonl(offset >> 32);
499 *resp->offset1 = htonl(offset & 0xffffffff);
500 resp->offset1 = NULL;
501 } else {
502 xdr_encode_hyper(resp->offset, offset);
503 }
504 }
505
506 RETURN_STATUS(nfserr);
507}
508
509/*
510 * Get file system stats
511 */
512static __be32
513nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
514 struct nfsd3_fsstatres *resp)
515{
516 __be32 nfserr;
517
518 dprintk("nfsd: FSSTAT(3) %s\n",
519 SVCFH_fmt(&argp->fh));
520
521 nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
522 fh_put(&argp->fh);
523 RETURN_STATUS(nfserr);
524}
525
526/*
527 * Get file system info
528 */
529static __be32
530nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
531 struct nfsd3_fsinfores *resp)
532{
533 __be32 nfserr;
534 u32 max_blocksize = svc_max_payload(rqstp);
535
536 dprintk("nfsd: FSINFO(3) %s\n",
537 SVCFH_fmt(&argp->fh));
538
539 resp->f_rtmax = max_blocksize;
540 resp->f_rtpref = max_blocksize;
541 resp->f_rtmult = PAGE_SIZE;
542 resp->f_wtmax = max_blocksize;
543 resp->f_wtpref = max_blocksize;
544 resp->f_wtmult = PAGE_SIZE;
545 resp->f_dtpref = PAGE_SIZE;
546 resp->f_maxfilesize = ~(u32) 0;
547 resp->f_properties = NFS3_FSF_DEFAULT;
548
549 nfserr = fh_verify(rqstp, &argp->fh, 0,
550 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
551
552 /* Check special features of the file system. May request
553 * different read/write sizes for file systems known to have
554 * problems with large blocks */
555 if (nfserr == 0) {
556 struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
557
558 /* Note that we don't care for remote fs's here */
559 if (sb->s_magic == MSDOS_SUPER_MAGIC) {
560 resp->f_properties = NFS3_FSF_BILLYBOY;
561 }
562 resp->f_maxfilesize = sb->s_maxbytes;
563 }
564
565 fh_put(&argp->fh);
566 RETURN_STATUS(nfserr);
567}
568
569/*
570 * Get pathconf info for the specified file
571 */
572static __be32
573nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
574 struct nfsd3_pathconfres *resp)
575{
576 __be32 nfserr;
577
578 dprintk("nfsd: PATHCONF(3) %s\n",
579 SVCFH_fmt(&argp->fh));
580
581 /* Set default pathconf */
582 resp->p_link_max = 255; /* at least */
583 resp->p_name_max = 255; /* at least */
584 resp->p_no_trunc = 0;
585 resp->p_chown_restricted = 1;
586 resp->p_case_insensitive = 0;
587 resp->p_case_preserving = 1;
588
589 nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
590
591 if (nfserr == 0) {
592 struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
593
594 /* Note that we don't care for remote fs's here */
595 switch (sb->s_magic) {
596 case EXT2_SUPER_MAGIC:
597 resp->p_link_max = EXT2_LINK_MAX;
598 resp->p_name_max = EXT2_NAME_LEN;
599 break;
600 case MSDOS_SUPER_MAGIC:
601 resp->p_case_insensitive = 1;
602 resp->p_case_preserving = 0;
603 break;
604 }
605 }
606
607 fh_put(&argp->fh);
608 RETURN_STATUS(nfserr);
609}
610
611
612/*
613 * Commit a file (range) to stable storage.
614 */
615static __be32
616nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp,
617 struct nfsd3_commitres *resp)
618{
619 __be32 nfserr;
620
621 dprintk("nfsd: COMMIT(3) %s %u@%Lu\n",
622 SVCFH_fmt(&argp->fh),
623 argp->count,
624 (unsigned long long) argp->offset);
625
626 if (argp->offset > NFS_OFFSET_MAX)
627 RETURN_STATUS(nfserr_inval);
628
629 fh_copy(&resp->fh, &argp->fh);
630 nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count);
631
632 RETURN_STATUS(nfserr);
633}
634
635
636/*
637 * NFSv3 Server procedures.
638 * Only the results of non-idempotent operations are cached.
639 */
640#define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle
641#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
642#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
643#define nfsd3_mkdirargs nfsd3_createargs
644#define nfsd3_readdirplusargs nfsd3_readdirargs
645#define nfsd3_fhandleargs nfsd_fhandle
646#define nfsd3_fhandleres nfsd3_attrstat
647#define nfsd3_attrstatres nfsd3_attrstat
648#define nfsd3_wccstatres nfsd3_attrstat
649#define nfsd3_createres nfsd3_diropres
650#define nfsd3_voidres nfsd3_voidargs
651struct nfsd3_voidargs { int dummy; };
652
653#define PROC(name, argt, rest, relt, cache, respsize) \
654 { (svc_procfunc) nfsd3_proc_##name, \
655 (kxdrproc_t) nfs3svc_decode_##argt##args, \
656 (kxdrproc_t) nfs3svc_encode_##rest##res, \
657 (kxdrproc_t) nfs3svc_release_##relt, \
658 sizeof(struct nfsd3_##argt##args), \
659 sizeof(struct nfsd3_##rest##res), \
660 0, \
661 cache, \
662 respsize, \
663 }
664
665#define ST 1 /* status*/
666#define FH 17 /* filehandle with length */
667#define AT 21 /* attributes */
668#define pAT (1+AT) /* post attributes - conditional */
669#define WC (7+pAT) /* WCC attributes */
670
671static struct svc_procedure nfsd_procedures3[22] = {
672 [NFS3PROC_NULL] = {
673 .pc_func = (svc_procfunc) nfsd3_proc_null,
674 .pc_encode = (kxdrproc_t) nfs3svc_encode_voidres,
675 .pc_argsize = sizeof(struct nfsd3_voidargs),
676 .pc_ressize = sizeof(struct nfsd3_voidres),
677 .pc_cachetype = RC_NOCACHE,
678 .pc_xdrressize = ST,
679 },
680 [NFS3PROC_GETATTR] = {
681 .pc_func = (svc_procfunc) nfsd3_proc_getattr,
682 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
683 .pc_encode = (kxdrproc_t) nfs3svc_encode_attrstatres,
684 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
685 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
686 .pc_ressize = sizeof(struct nfsd3_attrstatres),
687 .pc_cachetype = RC_NOCACHE,
688 .pc_xdrressize = ST+AT,
689 },
690 [NFS3PROC_SETATTR] = {
691 .pc_func = (svc_procfunc) nfsd3_proc_setattr,
692 .pc_decode = (kxdrproc_t) nfs3svc_decode_sattrargs,
693 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
694 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
695 .pc_argsize = sizeof(struct nfsd3_sattrargs),
696 .pc_ressize = sizeof(struct nfsd3_wccstatres),
697 .pc_cachetype = RC_REPLBUFF,
698 .pc_xdrressize = ST+WC,
699 },
700 [NFS3PROC_LOOKUP] = {
701 .pc_func = (svc_procfunc) nfsd3_proc_lookup,
702 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
703 .pc_encode = (kxdrproc_t) nfs3svc_encode_diropres,
704 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
705 .pc_argsize = sizeof(struct nfsd3_diropargs),
706 .pc_ressize = sizeof(struct nfsd3_diropres),
707 .pc_cachetype = RC_NOCACHE,
708 .pc_xdrressize = ST+FH+pAT+pAT,
709 },
710 [NFS3PROC_ACCESS] = {
711 .pc_func = (svc_procfunc) nfsd3_proc_access,
712 .pc_decode = (kxdrproc_t) nfs3svc_decode_accessargs,
713 .pc_encode = (kxdrproc_t) nfs3svc_encode_accessres,
714 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
715 .pc_argsize = sizeof(struct nfsd3_accessargs),
716 .pc_ressize = sizeof(struct nfsd3_accessres),
717 .pc_cachetype = RC_NOCACHE,
718 .pc_xdrressize = ST+pAT+1,
719 },
720 [NFS3PROC_READLINK] = {
721 .pc_func = (svc_procfunc) nfsd3_proc_readlink,
722 .pc_decode = (kxdrproc_t) nfs3svc_decode_readlinkargs,
723 .pc_encode = (kxdrproc_t) nfs3svc_encode_readlinkres,
724 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
725 .pc_argsize = sizeof(struct nfsd3_readlinkargs),
726 .pc_ressize = sizeof(struct nfsd3_readlinkres),
727 .pc_cachetype = RC_NOCACHE,
728 .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4,
729 },
730 [NFS3PROC_READ] = {
731 .pc_func = (svc_procfunc) nfsd3_proc_read,
732 .pc_decode = (kxdrproc_t) nfs3svc_decode_readargs,
733 .pc_encode = (kxdrproc_t) nfs3svc_encode_readres,
734 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
735 .pc_argsize = sizeof(struct nfsd3_readargs),
736 .pc_ressize = sizeof(struct nfsd3_readres),
737 .pc_cachetype = RC_NOCACHE,
738 .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4,
739 },
740 [NFS3PROC_WRITE] = {
741 .pc_func = (svc_procfunc) nfsd3_proc_write,
742 .pc_decode = (kxdrproc_t) nfs3svc_decode_writeargs,
743 .pc_encode = (kxdrproc_t) nfs3svc_encode_writeres,
744 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
745 .pc_argsize = sizeof(struct nfsd3_writeargs),
746 .pc_ressize = sizeof(struct nfsd3_writeres),
747 .pc_cachetype = RC_REPLBUFF,
748 .pc_xdrressize = ST+WC+4,
749 },
750 [NFS3PROC_CREATE] = {
751 .pc_func = (svc_procfunc) nfsd3_proc_create,
752 .pc_decode = (kxdrproc_t) nfs3svc_decode_createargs,
753 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
754 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
755 .pc_argsize = sizeof(struct nfsd3_createargs),
756 .pc_ressize = sizeof(struct nfsd3_createres),
757 .pc_cachetype = RC_REPLBUFF,
758 .pc_xdrressize = ST+(1+FH+pAT)+WC,
759 },
760 [NFS3PROC_MKDIR] = {
761 .pc_func = (svc_procfunc) nfsd3_proc_mkdir,
762 .pc_decode = (kxdrproc_t) nfs3svc_decode_mkdirargs,
763 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
764 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
765 .pc_argsize = sizeof(struct nfsd3_mkdirargs),
766 .pc_ressize = sizeof(struct nfsd3_createres),
767 .pc_cachetype = RC_REPLBUFF,
768 .pc_xdrressize = ST+(1+FH+pAT)+WC,
769 },
770 [NFS3PROC_SYMLINK] = {
771 .pc_func = (svc_procfunc) nfsd3_proc_symlink,
772 .pc_decode = (kxdrproc_t) nfs3svc_decode_symlinkargs,
773 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
774 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
775 .pc_argsize = sizeof(struct nfsd3_symlinkargs),
776 .pc_ressize = sizeof(struct nfsd3_createres),
777 .pc_cachetype = RC_REPLBUFF,
778 .pc_xdrressize = ST+(1+FH+pAT)+WC,
779 },
780 [NFS3PROC_MKNOD] = {
781 .pc_func = (svc_procfunc) nfsd3_proc_mknod,
782 .pc_decode = (kxdrproc_t) nfs3svc_decode_mknodargs,
783 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
784 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
785 .pc_argsize = sizeof(struct nfsd3_mknodargs),
786 .pc_ressize = sizeof(struct nfsd3_createres),
787 .pc_cachetype = RC_REPLBUFF,
788 .pc_xdrressize = ST+(1+FH+pAT)+WC,
789 },
790 [NFS3PROC_REMOVE] = {
791 .pc_func = (svc_procfunc) nfsd3_proc_remove,
792 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
793 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
794 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
795 .pc_argsize = sizeof(struct nfsd3_diropargs),
796 .pc_ressize = sizeof(struct nfsd3_wccstatres),
797 .pc_cachetype = RC_REPLBUFF,
798 .pc_xdrressize = ST+WC,
799 },
800 [NFS3PROC_RMDIR] = {
801 .pc_func = (svc_procfunc) nfsd3_proc_rmdir,
802 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
803 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
804 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
805 .pc_argsize = sizeof(struct nfsd3_diropargs),
806 .pc_ressize = sizeof(struct nfsd3_wccstatres),
807 .pc_cachetype = RC_REPLBUFF,
808 .pc_xdrressize = ST+WC,
809 },
810 [NFS3PROC_RENAME] = {
811 .pc_func = (svc_procfunc) nfsd3_proc_rename,
812 .pc_decode = (kxdrproc_t) nfs3svc_decode_renameargs,
813 .pc_encode = (kxdrproc_t) nfs3svc_encode_renameres,
814 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
815 .pc_argsize = sizeof(struct nfsd3_renameargs),
816 .pc_ressize = sizeof(struct nfsd3_renameres),
817 .pc_cachetype = RC_REPLBUFF,
818 .pc_xdrressize = ST+WC+WC,
819 },
820 [NFS3PROC_LINK] = {
821 .pc_func = (svc_procfunc) nfsd3_proc_link,
822 .pc_decode = (kxdrproc_t) nfs3svc_decode_linkargs,
823 .pc_encode = (kxdrproc_t) nfs3svc_encode_linkres,
824 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
825 .pc_argsize = sizeof(struct nfsd3_linkargs),
826 .pc_ressize = sizeof(struct nfsd3_linkres),
827 .pc_cachetype = RC_REPLBUFF,
828 .pc_xdrressize = ST+pAT+WC,
829 },
830 [NFS3PROC_READDIR] = {
831 .pc_func = (svc_procfunc) nfsd3_proc_readdir,
832 .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirargs,
833 .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
834 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
835 .pc_argsize = sizeof(struct nfsd3_readdirargs),
836 .pc_ressize = sizeof(struct nfsd3_readdirres),
837 .pc_cachetype = RC_NOCACHE,
838 },
839 [NFS3PROC_READDIRPLUS] = {
840 .pc_func = (svc_procfunc) nfsd3_proc_readdirplus,
841 .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirplusargs,
842 .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
843 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
844 .pc_argsize = sizeof(struct nfsd3_readdirplusargs),
845 .pc_ressize = sizeof(struct nfsd3_readdirres),
846 .pc_cachetype = RC_NOCACHE,
847 },
848 [NFS3PROC_FSSTAT] = {
849 .pc_func = (svc_procfunc) nfsd3_proc_fsstat,
850 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
851 .pc_encode = (kxdrproc_t) nfs3svc_encode_fsstatres,
852 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
853 .pc_ressize = sizeof(struct nfsd3_fsstatres),
854 .pc_cachetype = RC_NOCACHE,
855 .pc_xdrressize = ST+pAT+2*6+1,
856 },
857 [NFS3PROC_FSINFO] = {
858 .pc_func = (svc_procfunc) nfsd3_proc_fsinfo,
859 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
860 .pc_encode = (kxdrproc_t) nfs3svc_encode_fsinfores,
861 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
862 .pc_ressize = sizeof(struct nfsd3_fsinfores),
863 .pc_cachetype = RC_NOCACHE,
864 .pc_xdrressize = ST+pAT+12,
865 },
866 [NFS3PROC_PATHCONF] = {
867 .pc_func = (svc_procfunc) nfsd3_proc_pathconf,
868 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
869 .pc_encode = (kxdrproc_t) nfs3svc_encode_pathconfres,
870 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
871 .pc_ressize = sizeof(struct nfsd3_pathconfres),
872 .pc_cachetype = RC_NOCACHE,
873 .pc_xdrressize = ST+pAT+6,
874 },
875 [NFS3PROC_COMMIT] = {
876 .pc_func = (svc_procfunc) nfsd3_proc_commit,
877 .pc_decode = (kxdrproc_t) nfs3svc_decode_commitargs,
878 .pc_encode = (kxdrproc_t) nfs3svc_encode_commitres,
879 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
880 .pc_argsize = sizeof(struct nfsd3_commitargs),
881 .pc_ressize = sizeof(struct nfsd3_commitres),
882 .pc_cachetype = RC_NOCACHE,
883 .pc_xdrressize = ST+WC+2,
884 },
885};
886
887struct svc_version nfsd_version3 = {
888 .vs_vers = 3,
889 .vs_nproc = 22,
890 .vs_proc = nfsd_procedures3,
891 .vs_dispatch = nfsd_dispatch,
892 .vs_xdrsize = NFS3_SVC_XDRSIZE,
893};
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#include <linux/namei.h>
12
13#include "cache.h"
14#include "xdr3.h"
15#include "vfs.h"
16#include "filecache.h"
17
18#define NFSDDBG_FACILITY NFSDDBG_PROC
19
20static 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
31static __be32 nfsd3_map_status(__be32 status)
32{
33 switch (status) {
34 case nfs_ok:
35 break;
36 case nfserr_nofilehandle:
37 status = nfserr_badhandle;
38 break;
39 case nfserr_wrongsec:
40 case nfserr_file_open:
41 status = nfserr_acces;
42 break;
43 case nfserr_symlink_not_dir:
44 status = nfserr_notdir;
45 break;
46 case nfserr_symlink:
47 case nfserr_wrong_type:
48 status = nfserr_inval;
49 break;
50 }
51 return status;
52}
53
54/*
55 * NULL call.
56 */
57static __be32
58nfsd3_proc_null(struct svc_rqst *rqstp)
59{
60 return rpc_success;
61}
62
63/*
64 * Get a file's attributes
65 */
66static __be32
67nfsd3_proc_getattr(struct svc_rqst *rqstp)
68{
69 struct nfsd_fhandle *argp = rqstp->rq_argp;
70 struct nfsd3_attrstat *resp = rqstp->rq_resp;
71
72 dprintk("nfsd: GETATTR(3) %s\n",
73 SVCFH_fmt(&argp->fh));
74
75 fh_copy(&resp->fh, &argp->fh);
76 resp->status = fh_verify(rqstp, &resp->fh, 0,
77 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
78 if (resp->status != nfs_ok)
79 goto out;
80
81 resp->status = fh_getattr(&resp->fh, &resp->stat);
82out:
83 resp->status = nfsd3_map_status(resp->status);
84 return rpc_success;
85}
86
87/*
88 * Set a file's attributes
89 */
90static __be32
91nfsd3_proc_setattr(struct svc_rqst *rqstp)
92{
93 struct nfsd3_sattrargs *argp = rqstp->rq_argp;
94 struct nfsd3_attrstat *resp = rqstp->rq_resp;
95 struct nfsd_attrs attrs = {
96 .na_iattr = &argp->attrs,
97 };
98 const struct timespec64 *guardtime = NULL;
99
100 dprintk("nfsd: SETATTR(3) %s\n",
101 SVCFH_fmt(&argp->fh));
102
103 fh_copy(&resp->fh, &argp->fh);
104 if (argp->check_guard)
105 guardtime = &argp->guardtime;
106 resp->status = nfsd_setattr(rqstp, &resp->fh, &attrs, guardtime);
107 resp->status = nfsd3_map_status(resp->status);
108 return rpc_success;
109}
110
111/*
112 * Look up a path name component
113 */
114static __be32
115nfsd3_proc_lookup(struct svc_rqst *rqstp)
116{
117 struct nfsd3_diropargs *argp = rqstp->rq_argp;
118 struct nfsd3_diropres *resp = rqstp->rq_resp;
119
120 dprintk("nfsd: LOOKUP(3) %s %.*s\n",
121 SVCFH_fmt(&argp->fh),
122 argp->len,
123 argp->name);
124
125 fh_copy(&resp->dirfh, &argp->fh);
126 fh_init(&resp->fh, NFS3_FHSIZE);
127
128 resp->status = nfsd_lookup(rqstp, &resp->dirfh,
129 argp->name, argp->len,
130 &resp->fh);
131 resp->status = nfsd3_map_status(resp->status);
132 return rpc_success;
133}
134
135/*
136 * Check file access
137 */
138static __be32
139nfsd3_proc_access(struct svc_rqst *rqstp)
140{
141 struct nfsd3_accessargs *argp = rqstp->rq_argp;
142 struct nfsd3_accessres *resp = rqstp->rq_resp;
143
144 dprintk("nfsd: ACCESS(3) %s 0x%x\n",
145 SVCFH_fmt(&argp->fh),
146 argp->access);
147
148 fh_copy(&resp->fh, &argp->fh);
149 resp->access = argp->access;
150 resp->status = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
151 resp->status = nfsd3_map_status(resp->status);
152 return rpc_success;
153}
154
155/*
156 * Read a symlink.
157 */
158static __be32
159nfsd3_proc_readlink(struct svc_rqst *rqstp)
160{
161 struct nfsd_fhandle *argp = rqstp->rq_argp;
162 struct nfsd3_readlinkres *resp = rqstp->rq_resp;
163
164 dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh));
165
166 /* Read the symlink. */
167 fh_copy(&resp->fh, &argp->fh);
168 resp->len = NFS3_MAXPATHLEN;
169 resp->pages = rqstp->rq_next_page++;
170 resp->status = nfsd_readlink(rqstp, &resp->fh,
171 page_address(*resp->pages), &resp->len);
172 resp->status = nfsd3_map_status(resp->status);
173 return rpc_success;
174}
175
176/*
177 * Read a portion of a file.
178 */
179static __be32
180nfsd3_proc_read(struct svc_rqst *rqstp)
181{
182 struct nfsd3_readargs *argp = rqstp->rq_argp;
183 struct nfsd3_readres *resp = rqstp->rq_resp;
184
185 dprintk("nfsd: READ(3) %s %lu bytes at %Lu\n",
186 SVCFH_fmt(&argp->fh),
187 (unsigned long) argp->count,
188 (unsigned long long) argp->offset);
189
190 argp->count = min_t(u32, argp->count, svc_max_payload(rqstp));
191 argp->count = min_t(u32, argp->count, rqstp->rq_res.buflen);
192 if (argp->offset > (u64)OFFSET_MAX)
193 argp->offset = (u64)OFFSET_MAX;
194 if (argp->offset + argp->count > (u64)OFFSET_MAX)
195 argp->count = (u64)OFFSET_MAX - argp->offset;
196
197 resp->pages = rqstp->rq_next_page;
198
199 /* Obtain buffer pointer for payload.
200 * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
201 * + 1 (xdr opaque byte count) = 26
202 */
203 resp->count = argp->count;
204 svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3) << 2) +
205 resp->count + 4);
206
207 fh_copy(&resp->fh, &argp->fh);
208 resp->status = nfsd_read(rqstp, &resp->fh, argp->offset,
209 &resp->count, &resp->eof);
210 resp->status = nfsd3_map_status(resp->status);
211 return rpc_success;
212}
213
214/*
215 * Write data to a file
216 */
217static __be32
218nfsd3_proc_write(struct svc_rqst *rqstp)
219{
220 struct nfsd3_writeargs *argp = rqstp->rq_argp;
221 struct nfsd3_writeres *resp = rqstp->rq_resp;
222 unsigned long cnt = argp->len;
223 unsigned int nvecs;
224
225 dprintk("nfsd: WRITE(3) %s %d bytes at %Lu%s\n",
226 SVCFH_fmt(&argp->fh),
227 argp->len,
228 (unsigned long long) argp->offset,
229 argp->stable ? " stable" : "");
230
231 resp->status = nfserr_fbig;
232 if (argp->offset > (u64)OFFSET_MAX ||
233 argp->offset + argp->len > (u64)OFFSET_MAX)
234 return rpc_success;
235
236 fh_copy(&resp->fh, &argp->fh);
237 resp->committed = argp->stable;
238 nvecs = svc_fill_write_vector(rqstp, &argp->payload);
239
240 resp->status = nfsd_write(rqstp, &resp->fh, argp->offset,
241 rqstp->rq_vec, nvecs, &cnt,
242 resp->committed, resp->verf);
243 resp->count = cnt;
244 resp->status = nfsd3_map_status(resp->status);
245 return rpc_success;
246}
247
248/*
249 * Implement NFSv3's unchecked, guarded, and exclusive CREATE
250 * semantics for regular files. Except for the created file,
251 * this operation is stateless on the server.
252 *
253 * Upon return, caller must release @fhp and @resfhp.
254 */
255static __be32
256nfsd3_create_file(struct svc_rqst *rqstp, struct svc_fh *fhp,
257 struct svc_fh *resfhp, struct nfsd3_createargs *argp)
258{
259 struct iattr *iap = &argp->attrs;
260 struct dentry *parent, *child;
261 struct nfsd_attrs attrs = {
262 .na_iattr = iap,
263 };
264 __u32 v_mtime, v_atime;
265 struct inode *inode;
266 __be32 status;
267 int host_err;
268
269 if (isdotent(argp->name, argp->len))
270 return nfserr_exist;
271 if (!(iap->ia_valid & ATTR_MODE))
272 iap->ia_mode = 0;
273
274 status = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_EXEC);
275 if (status != nfs_ok)
276 return status;
277
278 parent = fhp->fh_dentry;
279 inode = d_inode(parent);
280
281 host_err = fh_want_write(fhp);
282 if (host_err)
283 return nfserrno(host_err);
284
285 inode_lock_nested(inode, I_MUTEX_PARENT);
286
287 child = lookup_one_len(argp->name, parent, argp->len);
288 if (IS_ERR(child)) {
289 status = nfserrno(PTR_ERR(child));
290 goto out;
291 }
292
293 if (d_really_is_negative(child)) {
294 status = fh_verify(rqstp, fhp, S_IFDIR, NFSD_MAY_CREATE);
295 if (status != nfs_ok)
296 goto out;
297 }
298
299 status = fh_compose(resfhp, fhp->fh_export, child, fhp);
300 if (status != nfs_ok)
301 goto out;
302
303 v_mtime = 0;
304 v_atime = 0;
305 if (argp->createmode == NFS3_CREATE_EXCLUSIVE) {
306 u32 *verifier = (u32 *)argp->verf;
307
308 /*
309 * Solaris 7 gets confused (bugid 4218508) if these have
310 * the high bit set, as do xfs filesystems without the
311 * "bigtime" feature. So just clear the high bits.
312 */
313 v_mtime = verifier[0] & 0x7fffffff;
314 v_atime = verifier[1] & 0x7fffffff;
315 }
316
317 if (d_really_is_positive(child)) {
318 status = nfs_ok;
319
320 switch (argp->createmode) {
321 case NFS3_CREATE_UNCHECKED:
322 if (!d_is_reg(child))
323 break;
324 iap->ia_valid &= ATTR_SIZE;
325 goto set_attr;
326 case NFS3_CREATE_GUARDED:
327 status = nfserr_exist;
328 break;
329 case NFS3_CREATE_EXCLUSIVE:
330 if (inode_get_mtime_sec(d_inode(child)) == v_mtime &&
331 inode_get_atime_sec(d_inode(child)) == v_atime &&
332 d_inode(child)->i_size == 0) {
333 break;
334 }
335 status = nfserr_exist;
336 }
337 goto out;
338 }
339
340 if (!IS_POSIXACL(inode))
341 iap->ia_mode &= ~current_umask();
342
343 status = fh_fill_pre_attrs(fhp);
344 if (status != nfs_ok)
345 goto out;
346 host_err = vfs_create(&nop_mnt_idmap, inode, child, iap->ia_mode, true);
347 if (host_err < 0) {
348 status = nfserrno(host_err);
349 goto out;
350 }
351 fh_fill_post_attrs(fhp);
352
353 /* A newly created file already has a file size of zero. */
354 if ((iap->ia_valid & ATTR_SIZE) && (iap->ia_size == 0))
355 iap->ia_valid &= ~ATTR_SIZE;
356 if (argp->createmode == NFS3_CREATE_EXCLUSIVE) {
357 iap->ia_valid = ATTR_MTIME | ATTR_ATIME |
358 ATTR_MTIME_SET | ATTR_ATIME_SET;
359 iap->ia_mtime.tv_sec = v_mtime;
360 iap->ia_atime.tv_sec = v_atime;
361 iap->ia_mtime.tv_nsec = 0;
362 iap->ia_atime.tv_nsec = 0;
363 }
364
365set_attr:
366 status = nfsd_create_setattr(rqstp, fhp, resfhp, &attrs);
367
368out:
369 inode_unlock(inode);
370 if (child && !IS_ERR(child))
371 dput(child);
372 fh_drop_write(fhp);
373 return status;
374}
375
376static __be32
377nfsd3_proc_create(struct svc_rqst *rqstp)
378{
379 struct nfsd3_createargs *argp = rqstp->rq_argp;
380 struct nfsd3_diropres *resp = rqstp->rq_resp;
381 svc_fh *dirfhp, *newfhp;
382
383 dprintk("nfsd: CREATE(3) %s %.*s\n",
384 SVCFH_fmt(&argp->fh),
385 argp->len,
386 argp->name);
387
388 dirfhp = fh_copy(&resp->dirfh, &argp->fh);
389 newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
390
391 resp->status = nfsd3_create_file(rqstp, dirfhp, newfhp, argp);
392 resp->status = nfsd3_map_status(resp->status);
393 return rpc_success;
394}
395
396/*
397 * Make directory. This operation is not idempotent.
398 */
399static __be32
400nfsd3_proc_mkdir(struct svc_rqst *rqstp)
401{
402 struct nfsd3_createargs *argp = rqstp->rq_argp;
403 struct nfsd3_diropres *resp = rqstp->rq_resp;
404 struct nfsd_attrs attrs = {
405 .na_iattr = &argp->attrs,
406 };
407
408 dprintk("nfsd: MKDIR(3) %s %.*s\n",
409 SVCFH_fmt(&argp->fh),
410 argp->len,
411 argp->name);
412
413 argp->attrs.ia_valid &= ~ATTR_SIZE;
414 fh_copy(&resp->dirfh, &argp->fh);
415 fh_init(&resp->fh, NFS3_FHSIZE);
416 resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
417 &attrs, S_IFDIR, 0, &resp->fh);
418 resp->status = nfsd3_map_status(resp->status);
419 return rpc_success;
420}
421
422static __be32
423nfsd3_proc_symlink(struct svc_rqst *rqstp)
424{
425 struct nfsd3_symlinkargs *argp = rqstp->rq_argp;
426 struct nfsd3_diropres *resp = rqstp->rq_resp;
427 struct nfsd_attrs attrs = {
428 .na_iattr = &argp->attrs,
429 };
430
431 if (argp->tlen == 0) {
432 resp->status = nfserr_inval;
433 goto out;
434 }
435 if (argp->tlen > NFS3_MAXPATHLEN) {
436 resp->status = nfserr_nametoolong;
437 goto out;
438 }
439
440 argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first,
441 page_address(rqstp->rq_arg.pages[0]),
442 argp->tlen);
443 if (IS_ERR(argp->tname)) {
444 resp->status = nfserrno(PTR_ERR(argp->tname));
445 goto out;
446 }
447
448 dprintk("nfsd: SYMLINK(3) %s %.*s -> %.*s\n",
449 SVCFH_fmt(&argp->ffh),
450 argp->flen, argp->fname,
451 argp->tlen, argp->tname);
452
453 fh_copy(&resp->dirfh, &argp->ffh);
454 fh_init(&resp->fh, NFS3_FHSIZE);
455 resp->status = nfsd_symlink(rqstp, &resp->dirfh, argp->fname,
456 argp->flen, argp->tname, &attrs, &resp->fh);
457 kfree(argp->tname);
458out:
459 resp->status = nfsd3_map_status(resp->status);
460 return rpc_success;
461}
462
463/*
464 * Make socket/fifo/device.
465 */
466static __be32
467nfsd3_proc_mknod(struct svc_rqst *rqstp)
468{
469 struct nfsd3_mknodargs *argp = rqstp->rq_argp;
470 struct nfsd3_diropres *resp = rqstp->rq_resp;
471 struct nfsd_attrs attrs = {
472 .na_iattr = &argp->attrs,
473 };
474 int type;
475 dev_t rdev = 0;
476
477 dprintk("nfsd: MKNOD(3) %s %.*s\n",
478 SVCFH_fmt(&argp->fh),
479 argp->len,
480 argp->name);
481
482 fh_copy(&resp->dirfh, &argp->fh);
483 fh_init(&resp->fh, NFS3_FHSIZE);
484
485 if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
486 rdev = MKDEV(argp->major, argp->minor);
487 if (MAJOR(rdev) != argp->major ||
488 MINOR(rdev) != argp->minor) {
489 resp->status = nfserr_inval;
490 goto out;
491 }
492 } else if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO) {
493 resp->status = nfserr_badtype;
494 goto out;
495 }
496
497 type = nfs3_ftypes[argp->ftype];
498 resp->status = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
499 &attrs, type, rdev, &resp->fh);
500out:
501 resp->status = nfsd3_map_status(resp->status);
502 return rpc_success;
503}
504
505/*
506 * Remove file/fifo/socket etc.
507 */
508static __be32
509nfsd3_proc_remove(struct svc_rqst *rqstp)
510{
511 struct nfsd3_diropargs *argp = rqstp->rq_argp;
512 struct nfsd3_attrstat *resp = rqstp->rq_resp;
513
514 dprintk("nfsd: REMOVE(3) %s %.*s\n",
515 SVCFH_fmt(&argp->fh),
516 argp->len,
517 argp->name);
518
519 /* Unlink. -S_IFDIR means file must not be a directory */
520 fh_copy(&resp->fh, &argp->fh);
521 resp->status = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR,
522 argp->name, argp->len);
523 resp->status = nfsd3_map_status(resp->status);
524 return rpc_success;
525}
526
527/*
528 * Remove a directory
529 */
530static __be32
531nfsd3_proc_rmdir(struct svc_rqst *rqstp)
532{
533 struct nfsd3_diropargs *argp = rqstp->rq_argp;
534 struct nfsd3_attrstat *resp = rqstp->rq_resp;
535
536 dprintk("nfsd: RMDIR(3) %s %.*s\n",
537 SVCFH_fmt(&argp->fh),
538 argp->len,
539 argp->name);
540
541 fh_copy(&resp->fh, &argp->fh);
542 resp->status = nfsd_unlink(rqstp, &resp->fh, S_IFDIR,
543 argp->name, argp->len);
544 resp->status = nfsd3_map_status(resp->status);
545 return rpc_success;
546}
547
548static __be32
549nfsd3_proc_rename(struct svc_rqst *rqstp)
550{
551 struct nfsd3_renameargs *argp = rqstp->rq_argp;
552 struct nfsd3_renameres *resp = rqstp->rq_resp;
553
554 dprintk("nfsd: RENAME(3) %s %.*s ->\n",
555 SVCFH_fmt(&argp->ffh),
556 argp->flen,
557 argp->fname);
558 dprintk("nfsd: -> %s %.*s\n",
559 SVCFH_fmt(&argp->tfh),
560 argp->tlen,
561 argp->tname);
562
563 fh_copy(&resp->ffh, &argp->ffh);
564 fh_copy(&resp->tfh, &argp->tfh);
565 resp->status = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
566 &resp->tfh, argp->tname, argp->tlen);
567 resp->status = nfsd3_map_status(resp->status);
568 return rpc_success;
569}
570
571static __be32
572nfsd3_proc_link(struct svc_rqst *rqstp)
573{
574 struct nfsd3_linkargs *argp = rqstp->rq_argp;
575 struct nfsd3_linkres *resp = rqstp->rq_resp;
576
577 dprintk("nfsd: LINK(3) %s ->\n",
578 SVCFH_fmt(&argp->ffh));
579 dprintk("nfsd: -> %s %.*s\n",
580 SVCFH_fmt(&argp->tfh),
581 argp->tlen,
582 argp->tname);
583
584 fh_copy(&resp->fh, &argp->ffh);
585 fh_copy(&resp->tfh, &argp->tfh);
586 resp->status = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
587 &resp->fh);
588 resp->status = nfsd3_map_status(resp->status);
589 return rpc_success;
590}
591
592static void nfsd3_init_dirlist_pages(struct svc_rqst *rqstp,
593 struct nfsd3_readdirres *resp,
594 u32 count)
595{
596 struct xdr_buf *buf = &resp->dirlist;
597 struct xdr_stream *xdr = &resp->xdr;
598 unsigned int sendbuf = min_t(unsigned int, rqstp->rq_res.buflen,
599 svc_max_payload(rqstp));
600
601 memset(buf, 0, sizeof(*buf));
602
603 /* Reserve room for the NULL ptr & eof flag (-2 words) */
604 buf->buflen = clamp(count, (u32)(XDR_UNIT * 2), sendbuf);
605 buf->buflen -= XDR_UNIT * 2;
606 buf->pages = rqstp->rq_next_page;
607 rqstp->rq_next_page += (buf->buflen + PAGE_SIZE - 1) >> PAGE_SHIFT;
608
609 xdr_init_encode_pages(xdr, buf, buf->pages, NULL);
610}
611
612/*
613 * Read a portion of a directory.
614 */
615static __be32
616nfsd3_proc_readdir(struct svc_rqst *rqstp)
617{
618 struct nfsd3_readdirargs *argp = rqstp->rq_argp;
619 struct nfsd3_readdirres *resp = rqstp->rq_resp;
620 loff_t offset;
621
622 dprintk("nfsd: READDIR(3) %s %d bytes at %d\n",
623 SVCFH_fmt(&argp->fh),
624 argp->count, (u32) argp->cookie);
625
626 nfsd3_init_dirlist_pages(rqstp, resp, argp->count);
627
628 fh_copy(&resp->fh, &argp->fh);
629 resp->common.err = nfs_ok;
630 resp->cookie_offset = 0;
631 resp->rqstp = rqstp;
632 offset = argp->cookie;
633 resp->status = nfsd_readdir(rqstp, &resp->fh, &offset,
634 &resp->common, nfs3svc_encode_entry3);
635 memcpy(resp->verf, argp->verf, 8);
636 nfs3svc_encode_cookie3(resp, offset);
637
638 /* Recycle only pages that were part of the reply */
639 rqstp->rq_next_page = resp->xdr.page_ptr + 1;
640
641 resp->status = nfsd3_map_status(resp->status);
642 return rpc_success;
643}
644
645/*
646 * Read a portion of a directory, including file handles and attrs.
647 * For now, we choose to ignore the dircount parameter.
648 */
649static __be32
650nfsd3_proc_readdirplus(struct svc_rqst *rqstp)
651{
652 struct nfsd3_readdirargs *argp = rqstp->rq_argp;
653 struct nfsd3_readdirres *resp = rqstp->rq_resp;
654 loff_t offset;
655
656 dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n",
657 SVCFH_fmt(&argp->fh),
658 argp->count, (u32) argp->cookie);
659
660 nfsd3_init_dirlist_pages(rqstp, resp, argp->count);
661
662 fh_copy(&resp->fh, &argp->fh);
663 resp->common.err = nfs_ok;
664 resp->cookie_offset = 0;
665 resp->rqstp = rqstp;
666 offset = argp->cookie;
667
668 resp->status = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP);
669 if (resp->status != nfs_ok)
670 goto out;
671
672 if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS) {
673 resp->status = nfserr_notsupp;
674 goto out;
675 }
676
677 resp->status = nfsd_readdir(rqstp, &resp->fh, &offset,
678 &resp->common, nfs3svc_encode_entryplus3);
679 memcpy(resp->verf, argp->verf, 8);
680 nfs3svc_encode_cookie3(resp, offset);
681
682 /* Recycle only pages that were part of the reply */
683 rqstp->rq_next_page = resp->xdr.page_ptr + 1;
684
685out:
686 resp->status = nfsd3_map_status(resp->status);
687 return rpc_success;
688}
689
690/*
691 * Get file system stats
692 */
693static __be32
694nfsd3_proc_fsstat(struct svc_rqst *rqstp)
695{
696 struct nfsd_fhandle *argp = rqstp->rq_argp;
697 struct nfsd3_fsstatres *resp = rqstp->rq_resp;
698
699 dprintk("nfsd: FSSTAT(3) %s\n",
700 SVCFH_fmt(&argp->fh));
701
702 resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
703 fh_put(&argp->fh);
704 resp->status = nfsd3_map_status(resp->status);
705 return rpc_success;
706}
707
708/*
709 * Get file system info
710 */
711static __be32
712nfsd3_proc_fsinfo(struct svc_rqst *rqstp)
713{
714 struct nfsd_fhandle *argp = rqstp->rq_argp;
715 struct nfsd3_fsinfores *resp = rqstp->rq_resp;
716 u32 max_blocksize = svc_max_payload(rqstp);
717
718 dprintk("nfsd: FSINFO(3) %s\n",
719 SVCFH_fmt(&argp->fh));
720
721 resp->f_rtmax = max_blocksize;
722 resp->f_rtpref = max_blocksize;
723 resp->f_rtmult = PAGE_SIZE;
724 resp->f_wtmax = max_blocksize;
725 resp->f_wtpref = max_blocksize;
726 resp->f_wtmult = PAGE_SIZE;
727 resp->f_dtpref = max_blocksize;
728 resp->f_maxfilesize = ~(u32) 0;
729 resp->f_properties = NFS3_FSF_DEFAULT;
730
731 resp->status = fh_verify(rqstp, &argp->fh, 0,
732 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
733
734 /* Check special features of the file system. May request
735 * different read/write sizes for file systems known to have
736 * problems with large blocks */
737 if (resp->status == nfs_ok) {
738 struct super_block *sb = argp->fh.fh_dentry->d_sb;
739
740 /* Note that we don't care for remote fs's here */
741 if (sb->s_magic == MSDOS_SUPER_MAGIC) {
742 resp->f_properties = NFS3_FSF_BILLYBOY;
743 }
744 resp->f_maxfilesize = sb->s_maxbytes;
745 }
746
747 fh_put(&argp->fh);
748 resp->status = nfsd3_map_status(resp->status);
749 return rpc_success;
750}
751
752/*
753 * Get pathconf info for the specified file
754 */
755static __be32
756nfsd3_proc_pathconf(struct svc_rqst *rqstp)
757{
758 struct nfsd_fhandle *argp = rqstp->rq_argp;
759 struct nfsd3_pathconfres *resp = rqstp->rq_resp;
760
761 dprintk("nfsd: PATHCONF(3) %s\n",
762 SVCFH_fmt(&argp->fh));
763
764 /* Set default pathconf */
765 resp->p_link_max = 255; /* at least */
766 resp->p_name_max = 255; /* at least */
767 resp->p_no_trunc = 0;
768 resp->p_chown_restricted = 1;
769 resp->p_case_insensitive = 0;
770 resp->p_case_preserving = 1;
771
772 resp->status = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
773
774 if (resp->status == nfs_ok) {
775 struct super_block *sb = argp->fh.fh_dentry->d_sb;
776
777 /* Note that we don't care for remote fs's here */
778 switch (sb->s_magic) {
779 case EXT2_SUPER_MAGIC:
780 resp->p_link_max = EXT2_LINK_MAX;
781 resp->p_name_max = EXT2_NAME_LEN;
782 break;
783 case MSDOS_SUPER_MAGIC:
784 resp->p_case_insensitive = 1;
785 resp->p_case_preserving = 0;
786 break;
787 }
788 }
789
790 fh_put(&argp->fh);
791 resp->status = nfsd3_map_status(resp->status);
792 return rpc_success;
793}
794
795/*
796 * Commit a file (range) to stable storage.
797 */
798static __be32
799nfsd3_proc_commit(struct svc_rqst *rqstp)
800{
801 struct nfsd3_commitargs *argp = rqstp->rq_argp;
802 struct nfsd3_commitres *resp = rqstp->rq_resp;
803 struct nfsd_file *nf;
804
805 dprintk("nfsd: COMMIT(3) %s %u@%Lu\n",
806 SVCFH_fmt(&argp->fh),
807 argp->count,
808 (unsigned long long) argp->offset);
809
810 fh_copy(&resp->fh, &argp->fh);
811 resp->status = nfsd_file_acquire_gc(rqstp, &resp->fh, NFSD_MAY_WRITE |
812 NFSD_MAY_NOT_BREAK_LEASE, &nf);
813 if (resp->status)
814 goto out;
815 resp->status = nfsd_commit(rqstp, &resp->fh, nf, argp->offset,
816 argp->count, resp->verf);
817 nfsd_file_put(nf);
818out:
819 resp->status = nfsd3_map_status(resp->status);
820 return rpc_success;
821}
822
823
824/*
825 * NFSv3 Server procedures.
826 * Only the results of non-idempotent operations are cached.
827 */
828#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
829#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
830#define nfsd3_mkdirargs nfsd3_createargs
831#define nfsd3_readdirplusargs nfsd3_readdirargs
832#define nfsd3_fhandleargs nfsd_fhandle
833#define nfsd3_attrstatres nfsd3_attrstat
834#define nfsd3_wccstatres nfsd3_attrstat
835#define nfsd3_createres nfsd3_diropres
836
837#define ST 1 /* status*/
838#define FH 17 /* filehandle with length */
839#define AT 21 /* attributes */
840#define pAT (1+AT) /* post attributes - conditional */
841#define WC (7+pAT) /* WCC attributes */
842
843static const struct svc_procedure nfsd_procedures3[22] = {
844 [NFS3PROC_NULL] = {
845 .pc_func = nfsd3_proc_null,
846 .pc_decode = nfssvc_decode_voidarg,
847 .pc_encode = nfssvc_encode_voidres,
848 .pc_argsize = sizeof(struct nfsd_voidargs),
849 .pc_argzero = sizeof(struct nfsd_voidargs),
850 .pc_ressize = sizeof(struct nfsd_voidres),
851 .pc_cachetype = RC_NOCACHE,
852 .pc_xdrressize = ST,
853 .pc_name = "NULL",
854 },
855 [NFS3PROC_GETATTR] = {
856 .pc_func = nfsd3_proc_getattr,
857 .pc_decode = nfs3svc_decode_fhandleargs,
858 .pc_encode = nfs3svc_encode_getattrres,
859 .pc_release = nfs3svc_release_fhandle,
860 .pc_argsize = sizeof(struct nfsd_fhandle),
861 .pc_argzero = sizeof(struct nfsd_fhandle),
862 .pc_ressize = sizeof(struct nfsd3_attrstatres),
863 .pc_cachetype = RC_NOCACHE,
864 .pc_xdrressize = ST+AT,
865 .pc_name = "GETATTR",
866 },
867 [NFS3PROC_SETATTR] = {
868 .pc_func = nfsd3_proc_setattr,
869 .pc_decode = nfs3svc_decode_sattrargs,
870 .pc_encode = nfs3svc_encode_wccstatres,
871 .pc_release = nfs3svc_release_fhandle,
872 .pc_argsize = sizeof(struct nfsd3_sattrargs),
873 .pc_argzero = sizeof(struct nfsd3_sattrargs),
874 .pc_ressize = sizeof(struct nfsd3_wccstatres),
875 .pc_cachetype = RC_REPLBUFF,
876 .pc_xdrressize = ST+WC,
877 .pc_name = "SETATTR",
878 },
879 [NFS3PROC_LOOKUP] = {
880 .pc_func = nfsd3_proc_lookup,
881 .pc_decode = nfs3svc_decode_diropargs,
882 .pc_encode = nfs3svc_encode_lookupres,
883 .pc_release = nfs3svc_release_fhandle2,
884 .pc_argsize = sizeof(struct nfsd3_diropargs),
885 .pc_argzero = sizeof(struct nfsd3_diropargs),
886 .pc_ressize = sizeof(struct nfsd3_diropres),
887 .pc_cachetype = RC_NOCACHE,
888 .pc_xdrressize = ST+FH+pAT+pAT,
889 .pc_name = "LOOKUP",
890 },
891 [NFS3PROC_ACCESS] = {
892 .pc_func = nfsd3_proc_access,
893 .pc_decode = nfs3svc_decode_accessargs,
894 .pc_encode = nfs3svc_encode_accessres,
895 .pc_release = nfs3svc_release_fhandle,
896 .pc_argsize = sizeof(struct nfsd3_accessargs),
897 .pc_argzero = sizeof(struct nfsd3_accessargs),
898 .pc_ressize = sizeof(struct nfsd3_accessres),
899 .pc_cachetype = RC_NOCACHE,
900 .pc_xdrressize = ST+pAT+1,
901 .pc_name = "ACCESS",
902 },
903 [NFS3PROC_READLINK] = {
904 .pc_func = nfsd3_proc_readlink,
905 .pc_decode = nfs3svc_decode_fhandleargs,
906 .pc_encode = nfs3svc_encode_readlinkres,
907 .pc_release = nfs3svc_release_fhandle,
908 .pc_argsize = sizeof(struct nfsd_fhandle),
909 .pc_argzero = sizeof(struct nfsd_fhandle),
910 .pc_ressize = sizeof(struct nfsd3_readlinkres),
911 .pc_cachetype = RC_NOCACHE,
912 .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4,
913 .pc_name = "READLINK",
914 },
915 [NFS3PROC_READ] = {
916 .pc_func = nfsd3_proc_read,
917 .pc_decode = nfs3svc_decode_readargs,
918 .pc_encode = nfs3svc_encode_readres,
919 .pc_release = nfs3svc_release_fhandle,
920 .pc_argsize = sizeof(struct nfsd3_readargs),
921 .pc_argzero = sizeof(struct nfsd3_readargs),
922 .pc_ressize = sizeof(struct nfsd3_readres),
923 .pc_cachetype = RC_NOCACHE,
924 .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4,
925 .pc_name = "READ",
926 },
927 [NFS3PROC_WRITE] = {
928 .pc_func = nfsd3_proc_write,
929 .pc_decode = nfs3svc_decode_writeargs,
930 .pc_encode = nfs3svc_encode_writeres,
931 .pc_release = nfs3svc_release_fhandle,
932 .pc_argsize = sizeof(struct nfsd3_writeargs),
933 .pc_argzero = sizeof(struct nfsd3_writeargs),
934 .pc_ressize = sizeof(struct nfsd3_writeres),
935 .pc_cachetype = RC_REPLBUFF,
936 .pc_xdrressize = ST+WC+4,
937 .pc_name = "WRITE",
938 },
939 [NFS3PROC_CREATE] = {
940 .pc_func = nfsd3_proc_create,
941 .pc_decode = nfs3svc_decode_createargs,
942 .pc_encode = nfs3svc_encode_createres,
943 .pc_release = nfs3svc_release_fhandle2,
944 .pc_argsize = sizeof(struct nfsd3_createargs),
945 .pc_argzero = sizeof(struct nfsd3_createargs),
946 .pc_ressize = sizeof(struct nfsd3_createres),
947 .pc_cachetype = RC_REPLBUFF,
948 .pc_xdrressize = ST+(1+FH+pAT)+WC,
949 .pc_name = "CREATE",
950 },
951 [NFS3PROC_MKDIR] = {
952 .pc_func = nfsd3_proc_mkdir,
953 .pc_decode = nfs3svc_decode_mkdirargs,
954 .pc_encode = nfs3svc_encode_createres,
955 .pc_release = nfs3svc_release_fhandle2,
956 .pc_argsize = sizeof(struct nfsd3_mkdirargs),
957 .pc_argzero = sizeof(struct nfsd3_mkdirargs),
958 .pc_ressize = sizeof(struct nfsd3_createres),
959 .pc_cachetype = RC_REPLBUFF,
960 .pc_xdrressize = ST+(1+FH+pAT)+WC,
961 .pc_name = "MKDIR",
962 },
963 [NFS3PROC_SYMLINK] = {
964 .pc_func = nfsd3_proc_symlink,
965 .pc_decode = nfs3svc_decode_symlinkargs,
966 .pc_encode = nfs3svc_encode_createres,
967 .pc_release = nfs3svc_release_fhandle2,
968 .pc_argsize = sizeof(struct nfsd3_symlinkargs),
969 .pc_argzero = sizeof(struct nfsd3_symlinkargs),
970 .pc_ressize = sizeof(struct nfsd3_createres),
971 .pc_cachetype = RC_REPLBUFF,
972 .pc_xdrressize = ST+(1+FH+pAT)+WC,
973 .pc_name = "SYMLINK",
974 },
975 [NFS3PROC_MKNOD] = {
976 .pc_func = nfsd3_proc_mknod,
977 .pc_decode = nfs3svc_decode_mknodargs,
978 .pc_encode = nfs3svc_encode_createres,
979 .pc_release = nfs3svc_release_fhandle2,
980 .pc_argsize = sizeof(struct nfsd3_mknodargs),
981 .pc_argzero = sizeof(struct nfsd3_mknodargs),
982 .pc_ressize = sizeof(struct nfsd3_createres),
983 .pc_cachetype = RC_REPLBUFF,
984 .pc_xdrressize = ST+(1+FH+pAT)+WC,
985 .pc_name = "MKNOD",
986 },
987 [NFS3PROC_REMOVE] = {
988 .pc_func = nfsd3_proc_remove,
989 .pc_decode = nfs3svc_decode_diropargs,
990 .pc_encode = nfs3svc_encode_wccstatres,
991 .pc_release = nfs3svc_release_fhandle,
992 .pc_argsize = sizeof(struct nfsd3_diropargs),
993 .pc_argzero = sizeof(struct nfsd3_diropargs),
994 .pc_ressize = sizeof(struct nfsd3_wccstatres),
995 .pc_cachetype = RC_REPLBUFF,
996 .pc_xdrressize = ST+WC,
997 .pc_name = "REMOVE",
998 },
999 [NFS3PROC_RMDIR] = {
1000 .pc_func = nfsd3_proc_rmdir,
1001 .pc_decode = nfs3svc_decode_diropargs,
1002 .pc_encode = nfs3svc_encode_wccstatres,
1003 .pc_release = nfs3svc_release_fhandle,
1004 .pc_argsize = sizeof(struct nfsd3_diropargs),
1005 .pc_argzero = sizeof(struct nfsd3_diropargs),
1006 .pc_ressize = sizeof(struct nfsd3_wccstatres),
1007 .pc_cachetype = RC_REPLBUFF,
1008 .pc_xdrressize = ST+WC,
1009 .pc_name = "RMDIR",
1010 },
1011 [NFS3PROC_RENAME] = {
1012 .pc_func = nfsd3_proc_rename,
1013 .pc_decode = nfs3svc_decode_renameargs,
1014 .pc_encode = nfs3svc_encode_renameres,
1015 .pc_release = nfs3svc_release_fhandle2,
1016 .pc_argsize = sizeof(struct nfsd3_renameargs),
1017 .pc_argzero = sizeof(struct nfsd3_renameargs),
1018 .pc_ressize = sizeof(struct nfsd3_renameres),
1019 .pc_cachetype = RC_REPLBUFF,
1020 .pc_xdrressize = ST+WC+WC,
1021 .pc_name = "RENAME",
1022 },
1023 [NFS3PROC_LINK] = {
1024 .pc_func = nfsd3_proc_link,
1025 .pc_decode = nfs3svc_decode_linkargs,
1026 .pc_encode = nfs3svc_encode_linkres,
1027 .pc_release = nfs3svc_release_fhandle2,
1028 .pc_argsize = sizeof(struct nfsd3_linkargs),
1029 .pc_argzero = sizeof(struct nfsd3_linkargs),
1030 .pc_ressize = sizeof(struct nfsd3_linkres),
1031 .pc_cachetype = RC_REPLBUFF,
1032 .pc_xdrressize = ST+pAT+WC,
1033 .pc_name = "LINK",
1034 },
1035 [NFS3PROC_READDIR] = {
1036 .pc_func = nfsd3_proc_readdir,
1037 .pc_decode = nfs3svc_decode_readdirargs,
1038 .pc_encode = nfs3svc_encode_readdirres,
1039 .pc_release = nfs3svc_release_fhandle,
1040 .pc_argsize = sizeof(struct nfsd3_readdirargs),
1041 .pc_argzero = sizeof(struct nfsd3_readdirargs),
1042 .pc_ressize = sizeof(struct nfsd3_readdirres),
1043 .pc_cachetype = RC_NOCACHE,
1044 .pc_name = "READDIR",
1045 },
1046 [NFS3PROC_READDIRPLUS] = {
1047 .pc_func = nfsd3_proc_readdirplus,
1048 .pc_decode = nfs3svc_decode_readdirplusargs,
1049 .pc_encode = nfs3svc_encode_readdirres,
1050 .pc_release = nfs3svc_release_fhandle,
1051 .pc_argsize = sizeof(struct nfsd3_readdirplusargs),
1052 .pc_argzero = sizeof(struct nfsd3_readdirplusargs),
1053 .pc_ressize = sizeof(struct nfsd3_readdirres),
1054 .pc_cachetype = RC_NOCACHE,
1055 .pc_name = "READDIRPLUS",
1056 },
1057 [NFS3PROC_FSSTAT] = {
1058 .pc_func = nfsd3_proc_fsstat,
1059 .pc_decode = nfs3svc_decode_fhandleargs,
1060 .pc_encode = nfs3svc_encode_fsstatres,
1061 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
1062 .pc_argzero = sizeof(struct nfsd3_fhandleargs),
1063 .pc_ressize = sizeof(struct nfsd3_fsstatres),
1064 .pc_cachetype = RC_NOCACHE,
1065 .pc_xdrressize = ST+pAT+2*6+1,
1066 .pc_name = "FSSTAT",
1067 },
1068 [NFS3PROC_FSINFO] = {
1069 .pc_func = nfsd3_proc_fsinfo,
1070 .pc_decode = nfs3svc_decode_fhandleargs,
1071 .pc_encode = nfs3svc_encode_fsinfores,
1072 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
1073 .pc_argzero = sizeof(struct nfsd3_fhandleargs),
1074 .pc_ressize = sizeof(struct nfsd3_fsinfores),
1075 .pc_cachetype = RC_NOCACHE,
1076 .pc_xdrressize = ST+pAT+12,
1077 .pc_name = "FSINFO",
1078 },
1079 [NFS3PROC_PATHCONF] = {
1080 .pc_func = nfsd3_proc_pathconf,
1081 .pc_decode = nfs3svc_decode_fhandleargs,
1082 .pc_encode = nfs3svc_encode_pathconfres,
1083 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
1084 .pc_argzero = sizeof(struct nfsd3_fhandleargs),
1085 .pc_ressize = sizeof(struct nfsd3_pathconfres),
1086 .pc_cachetype = RC_NOCACHE,
1087 .pc_xdrressize = ST+pAT+6,
1088 .pc_name = "PATHCONF",
1089 },
1090 [NFS3PROC_COMMIT] = {
1091 .pc_func = nfsd3_proc_commit,
1092 .pc_decode = nfs3svc_decode_commitargs,
1093 .pc_encode = nfs3svc_encode_commitres,
1094 .pc_release = nfs3svc_release_fhandle,
1095 .pc_argsize = sizeof(struct nfsd3_commitargs),
1096 .pc_argzero = sizeof(struct nfsd3_commitargs),
1097 .pc_ressize = sizeof(struct nfsd3_commitres),
1098 .pc_cachetype = RC_NOCACHE,
1099 .pc_xdrressize = ST+WC+2,
1100 .pc_name = "COMMIT",
1101 },
1102};
1103
1104static DEFINE_PER_CPU_ALIGNED(unsigned long,
1105 nfsd_count3[ARRAY_SIZE(nfsd_procedures3)]);
1106const struct svc_version nfsd_version3 = {
1107 .vs_vers = 3,
1108 .vs_nproc = ARRAY_SIZE(nfsd_procedures3),
1109 .vs_proc = nfsd_procedures3,
1110 .vs_dispatch = nfsd_dispatch,
1111 .vs_count = nfsd_count3,
1112 .vs_xdrsize = NFS3_SVC_XDRSIZE,
1113};