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