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