xref: /openbmc/linux/fs/nfsd/nfs3proc.c (revision aac5987a)
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 
19 static 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  */
33 static __be32
34 nfsd3_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  */
42 static __be32
43 nfsd3_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  */
65 static __be32
66 nfsd3_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  */
83 static __be32
84 nfsd3_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  */
107 static __be32
108 nfsd3_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  */
126 static __be32
127 nfsd3_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  */
144 static __be32
145 nfsd3_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  */
181 static __be32
182 nfsd3_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, argp->offset,
197 				rqstp->rq_vec, argp->vlen,
198 				&cnt, resp->committed);
199 	resp->count = cnt;
200 	RETURN_STATUS(nfserr);
201 }
202 
203 /*
204  * With NFSv3, CREATE processing is a lot easier than with NFSv2.
205  * At least in theory; we'll see how it fares in practice when the
206  * first reports about SunOS compatibility problems start to pour in...
207  */
208 static __be32
209 nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
210 					  struct nfsd3_diropres   *resp)
211 {
212 	svc_fh		*dirfhp, *newfhp = NULL;
213 	struct iattr	*attr;
214 	__be32		nfserr;
215 
216 	dprintk("nfsd: CREATE(3)   %s %.*s\n",
217 				SVCFH_fmt(&argp->fh),
218 				argp->len,
219 				argp->name);
220 
221 	dirfhp = fh_copy(&resp->dirfh, &argp->fh);
222 	newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
223 	attr   = &argp->attrs;
224 
225 	/* Unfudge the mode bits */
226 	attr->ia_mode &= ~S_IFMT;
227 	if (!(attr->ia_valid & ATTR_MODE)) {
228 		attr->ia_valid |= ATTR_MODE;
229 		attr->ia_mode = S_IFREG;
230 	} else {
231 		attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG;
232 	}
233 
234 	/* Now create the file and set attributes */
235 	nfserr = do_nfsd_create(rqstp, dirfhp, argp->name, argp->len,
236 				attr, newfhp,
237 				argp->createmode, (u32 *)argp->verf, NULL, NULL);
238 
239 	RETURN_STATUS(nfserr);
240 }
241 
242 /*
243  * Make directory. This operation is not idempotent.
244  */
245 static __be32
246 nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
247 					 struct nfsd3_diropres   *resp)
248 {
249 	__be32	nfserr;
250 
251 	dprintk("nfsd: MKDIR(3)    %s %.*s\n",
252 				SVCFH_fmt(&argp->fh),
253 				argp->len,
254 				argp->name);
255 
256 	argp->attrs.ia_valid &= ~ATTR_SIZE;
257 	fh_copy(&resp->dirfh, &argp->fh);
258 	fh_init(&resp->fh, NFS3_FHSIZE);
259 	nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
260 				    &argp->attrs, S_IFDIR, 0, &resp->fh);
261 	fh_unlock(&resp->dirfh);
262 	RETURN_STATUS(nfserr);
263 }
264 
265 static __be32
266 nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp,
267 					   struct nfsd3_diropres    *resp)
268 {
269 	__be32	nfserr;
270 
271 	dprintk("nfsd: SYMLINK(3)  %s %.*s -> %.*s\n",
272 				SVCFH_fmt(&argp->ffh),
273 				argp->flen, argp->fname,
274 				argp->tlen, argp->tname);
275 
276 	fh_copy(&resp->dirfh, &argp->ffh);
277 	fh_init(&resp->fh, NFS3_FHSIZE);
278 	nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen,
279 						   argp->tname, &resp->fh);
280 	RETURN_STATUS(nfserr);
281 }
282 
283 /*
284  * Make socket/fifo/device.
285  */
286 static __be32
287 nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp,
288 					 struct nfsd3_diropres  *resp)
289 {
290 	__be32	nfserr;
291 	int type;
292 	dev_t	rdev = 0;
293 
294 	dprintk("nfsd: MKNOD(3)    %s %.*s\n",
295 				SVCFH_fmt(&argp->fh),
296 				argp->len,
297 				argp->name);
298 
299 	fh_copy(&resp->dirfh, &argp->fh);
300 	fh_init(&resp->fh, NFS3_FHSIZE);
301 
302 	if (argp->ftype == 0 || argp->ftype >= NF3BAD)
303 		RETURN_STATUS(nfserr_inval);
304 	if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
305 		rdev = MKDEV(argp->major, argp->minor);
306 		if (MAJOR(rdev) != argp->major ||
307 		    MINOR(rdev) != argp->minor)
308 			RETURN_STATUS(nfserr_inval);
309 	} else
310 		if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO)
311 			RETURN_STATUS(nfserr_inval);
312 
313 	type = nfs3_ftypes[argp->ftype];
314 	nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
315 				    &argp->attrs, type, rdev, &resp->fh);
316 	fh_unlock(&resp->dirfh);
317 	RETURN_STATUS(nfserr);
318 }
319 
320 /*
321  * Remove file/fifo/socket etc.
322  */
323 static __be32
324 nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
325 					  struct nfsd3_attrstat  *resp)
326 {
327 	__be32	nfserr;
328 
329 	dprintk("nfsd: REMOVE(3)   %s %.*s\n",
330 				SVCFH_fmt(&argp->fh),
331 				argp->len,
332 				argp->name);
333 
334 	/* Unlink. -S_IFDIR means file must not be a directory */
335 	fh_copy(&resp->fh, &argp->fh);
336 	nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len);
337 	fh_unlock(&resp->fh);
338 	RETURN_STATUS(nfserr);
339 }
340 
341 /*
342  * Remove a directory
343  */
344 static __be32
345 nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
346 					 struct nfsd3_attrstat  *resp)
347 {
348 	__be32	nfserr;
349 
350 	dprintk("nfsd: RMDIR(3)    %s %.*s\n",
351 				SVCFH_fmt(&argp->fh),
352 				argp->len,
353 				argp->name);
354 
355 	fh_copy(&resp->fh, &argp->fh);
356 	nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len);
357 	fh_unlock(&resp->fh);
358 	RETURN_STATUS(nfserr);
359 }
360 
361 static __be32
362 nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp,
363 					  struct nfsd3_renameres  *resp)
364 {
365 	__be32	nfserr;
366 
367 	dprintk("nfsd: RENAME(3)   %s %.*s ->\n",
368 				SVCFH_fmt(&argp->ffh),
369 				argp->flen,
370 				argp->fname);
371 	dprintk("nfsd: -> %s %.*s\n",
372 				SVCFH_fmt(&argp->tfh),
373 				argp->tlen,
374 				argp->tname);
375 
376 	fh_copy(&resp->ffh, &argp->ffh);
377 	fh_copy(&resp->tfh, &argp->tfh);
378 	nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
379 				    &resp->tfh, argp->tname, argp->tlen);
380 	RETURN_STATUS(nfserr);
381 }
382 
383 static __be32
384 nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp,
385 					struct nfsd3_linkres  *resp)
386 {
387 	__be32	nfserr;
388 
389 	dprintk("nfsd: LINK(3)     %s ->\n",
390 				SVCFH_fmt(&argp->ffh));
391 	dprintk("nfsd:   -> %s %.*s\n",
392 				SVCFH_fmt(&argp->tfh),
393 				argp->tlen,
394 				argp->tname);
395 
396 	fh_copy(&resp->fh,  &argp->ffh);
397 	fh_copy(&resp->tfh, &argp->tfh);
398 	nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
399 				  &resp->fh);
400 	RETURN_STATUS(nfserr);
401 }
402 
403 /*
404  * Read a portion of a directory.
405  */
406 static __be32
407 nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
408 					   struct nfsd3_readdirres  *resp)
409 {
410 	__be32		nfserr;
411 	int		count;
412 
413 	dprintk("nfsd: READDIR(3)  %s %d bytes at %d\n",
414 				SVCFH_fmt(&argp->fh),
415 				argp->count, (u32) argp->cookie);
416 
417 	/* Make sure we've room for the NULL ptr & eof flag, and shrink to
418 	 * client read size */
419 	count = (argp->count >> 2) - 2;
420 
421 	/* Read directory and encode entries on the fly */
422 	fh_copy(&resp->fh, &argp->fh);
423 
424 	resp->buflen = count;
425 	resp->common.err = nfs_ok;
426 	resp->buffer = argp->buffer;
427 	resp->rqstp = rqstp;
428 	nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t*) &argp->cookie,
429 					&resp->common, nfs3svc_encode_entry);
430 	memcpy(resp->verf, argp->verf, 8);
431 	resp->count = resp->buffer - argp->buffer;
432 	if (resp->offset)
433 		xdr_encode_hyper(resp->offset, argp->cookie);
434 
435 	RETURN_STATUS(nfserr);
436 }
437 
438 /*
439  * Read a portion of a directory, including file handles and attrs.
440  * For now, we choose to ignore the dircount parameter.
441  */
442 static __be32
443 nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
444 					       struct nfsd3_readdirres  *resp)
445 {
446 	__be32	nfserr;
447 	int	count = 0;
448 	loff_t	offset;
449 	struct page **p;
450 	caddr_t	page_addr = NULL;
451 
452 	dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n",
453 				SVCFH_fmt(&argp->fh),
454 				argp->count, (u32) argp->cookie);
455 
456 	/* Convert byte count to number of words (i.e. >> 2),
457 	 * and reserve room for the NULL ptr & eof flag (-2 words) */
458 	resp->count = (argp->count >> 2) - 2;
459 
460 	/* Read directory and encode entries on the fly */
461 	fh_copy(&resp->fh, &argp->fh);
462 
463 	resp->common.err = nfs_ok;
464 	resp->buffer = argp->buffer;
465 	resp->buflen = resp->count;
466 	resp->rqstp = rqstp;
467 	offset = argp->cookie;
468 
469 	nfserr = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP);
470 	if (nfserr)
471 		RETURN_STATUS(nfserr);
472 
473 	if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS)
474 		RETURN_STATUS(nfserr_notsupp);
475 
476 	nfserr = nfsd_readdir(rqstp, &resp->fh,
477 				     &offset,
478 				     &resp->common,
479 				     nfs3svc_encode_entry_plus);
480 	memcpy(resp->verf, argp->verf, 8);
481 	for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) {
482 		page_addr = page_address(*p);
483 
484 		if (((caddr_t)resp->buffer >= page_addr) &&
485 		    ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) {
486 			count += (caddr_t)resp->buffer - page_addr;
487 			break;
488 		}
489 		count += PAGE_SIZE;
490 	}
491 	resp->count = count >> 2;
492 	if (resp->offset) {
493 		if (unlikely(resp->offset1)) {
494 			/* we ended up with offset on a page boundary */
495 			*resp->offset = htonl(offset >> 32);
496 			*resp->offset1 = htonl(offset & 0xffffffff);
497 			resp->offset1 = NULL;
498 		} else {
499 			xdr_encode_hyper(resp->offset, offset);
500 		}
501 	}
502 
503 	RETURN_STATUS(nfserr);
504 }
505 
506 /*
507  * Get file system stats
508  */
509 static __be32
510 nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle    *argp,
511 					   struct nfsd3_fsstatres *resp)
512 {
513 	__be32	nfserr;
514 
515 	dprintk("nfsd: FSSTAT(3)   %s\n",
516 				SVCFH_fmt(&argp->fh));
517 
518 	nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats, 0);
519 	fh_put(&argp->fh);
520 	RETURN_STATUS(nfserr);
521 }
522 
523 /*
524  * Get file system info
525  */
526 static __be32
527 nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle    *argp,
528 					   struct nfsd3_fsinfores *resp)
529 {
530 	__be32	nfserr;
531 	u32	max_blocksize = svc_max_payload(rqstp);
532 
533 	dprintk("nfsd: FSINFO(3)   %s\n",
534 				SVCFH_fmt(&argp->fh));
535 
536 	resp->f_rtmax  = max_blocksize;
537 	resp->f_rtpref = max_blocksize;
538 	resp->f_rtmult = PAGE_SIZE;
539 	resp->f_wtmax  = max_blocksize;
540 	resp->f_wtpref = max_blocksize;
541 	resp->f_wtmult = PAGE_SIZE;
542 	resp->f_dtpref = PAGE_SIZE;
543 	resp->f_maxfilesize = ~(u32) 0;
544 	resp->f_properties = NFS3_FSF_DEFAULT;
545 
546 	nfserr = fh_verify(rqstp, &argp->fh, 0,
547 			NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
548 
549 	/* Check special features of the file system. May request
550 	 * different read/write sizes for file systems known to have
551 	 * problems with large blocks */
552 	if (nfserr == 0) {
553 		struct super_block *sb = argp->fh.fh_dentry->d_sb;
554 
555 		/* Note that we don't care for remote fs's here */
556 		if (sb->s_magic == MSDOS_SUPER_MAGIC) {
557 			resp->f_properties = NFS3_FSF_BILLYBOY;
558 		}
559 		resp->f_maxfilesize = sb->s_maxbytes;
560 	}
561 
562 	fh_put(&argp->fh);
563 	RETURN_STATUS(nfserr);
564 }
565 
566 /*
567  * Get pathconf info for the specified file
568  */
569 static __be32
570 nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle      *argp,
571 					     struct nfsd3_pathconfres *resp)
572 {
573 	__be32	nfserr;
574 
575 	dprintk("nfsd: PATHCONF(3) %s\n",
576 				SVCFH_fmt(&argp->fh));
577 
578 	/* Set default pathconf */
579 	resp->p_link_max = 255;		/* at least */
580 	resp->p_name_max = 255;		/* at least */
581 	resp->p_no_trunc = 0;
582 	resp->p_chown_restricted = 1;
583 	resp->p_case_insensitive = 0;
584 	resp->p_case_preserving = 1;
585 
586 	nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
587 
588 	if (nfserr == 0) {
589 		struct super_block *sb = argp->fh.fh_dentry->d_sb;
590 
591 		/* Note that we don't care for remote fs's here */
592 		switch (sb->s_magic) {
593 		case EXT2_SUPER_MAGIC:
594 			resp->p_link_max = EXT2_LINK_MAX;
595 			resp->p_name_max = EXT2_NAME_LEN;
596 			break;
597 		case MSDOS_SUPER_MAGIC:
598 			resp->p_case_insensitive = 1;
599 			resp->p_case_preserving  = 0;
600 			break;
601 		}
602 	}
603 
604 	fh_put(&argp->fh);
605 	RETURN_STATUS(nfserr);
606 }
607 
608 
609 /*
610  * Commit a file (range) to stable storage.
611  */
612 static __be32
613 nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp,
614 					   struct nfsd3_commitres  *resp)
615 {
616 	__be32	nfserr;
617 
618 	dprintk("nfsd: COMMIT(3)   %s %u@%Lu\n",
619 				SVCFH_fmt(&argp->fh),
620 				argp->count,
621 				(unsigned long long) argp->offset);
622 
623 	if (argp->offset > NFS_OFFSET_MAX)
624 		RETURN_STATUS(nfserr_inval);
625 
626 	fh_copy(&resp->fh, &argp->fh);
627 	nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count);
628 
629 	RETURN_STATUS(nfserr);
630 }
631 
632 
633 /*
634  * NFSv3 Server procedures.
635  * Only the results of non-idempotent operations are cached.
636  */
637 #define nfs3svc_decode_fhandleargs	nfs3svc_decode_fhandle
638 #define nfs3svc_encode_attrstatres	nfs3svc_encode_attrstat
639 #define nfs3svc_encode_wccstatres	nfs3svc_encode_wccstat
640 #define nfsd3_mkdirargs			nfsd3_createargs
641 #define nfsd3_readdirplusargs		nfsd3_readdirargs
642 #define nfsd3_fhandleargs		nfsd_fhandle
643 #define nfsd3_fhandleres		nfsd3_attrstat
644 #define nfsd3_attrstatres		nfsd3_attrstat
645 #define nfsd3_wccstatres		nfsd3_attrstat
646 #define nfsd3_createres			nfsd3_diropres
647 #define nfsd3_voidres			nfsd3_voidargs
648 struct nfsd3_voidargs { int dummy; };
649 
650 #define PROC(name, argt, rest, relt, cache, respsize)	\
651  { (svc_procfunc) nfsd3_proc_##name,		\
652    (kxdrproc_t) nfs3svc_decode_##argt##args,	\
653    (kxdrproc_t) nfs3svc_encode_##rest##res,	\
654    (kxdrproc_t) nfs3svc_release_##relt,		\
655    sizeof(struct nfsd3_##argt##args),		\
656    sizeof(struct nfsd3_##rest##res),		\
657    0,						\
658    cache,					\
659    respsize,					\
660  }
661 
662 #define ST 1		/* status*/
663 #define FH 17		/* filehandle with length */
664 #define AT 21		/* attributes */
665 #define pAT (1+AT)	/* post attributes - conditional */
666 #define WC (7+pAT)	/* WCC attributes */
667 
668 static struct svc_procedure		nfsd_procedures3[22] = {
669 	[NFS3PROC_NULL] = {
670 		.pc_func = (svc_procfunc) nfsd3_proc_null,
671 		.pc_encode = (kxdrproc_t) nfs3svc_encode_voidres,
672 		.pc_argsize = sizeof(struct nfsd3_voidargs),
673 		.pc_ressize = sizeof(struct nfsd3_voidres),
674 		.pc_cachetype = RC_NOCACHE,
675 		.pc_xdrressize = ST,
676 	},
677 	[NFS3PROC_GETATTR] = {
678 		.pc_func = (svc_procfunc) nfsd3_proc_getattr,
679 		.pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
680 		.pc_encode = (kxdrproc_t) nfs3svc_encode_attrstatres,
681 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
682 		.pc_argsize = sizeof(struct nfsd3_fhandleargs),
683 		.pc_ressize = sizeof(struct nfsd3_attrstatres),
684 		.pc_cachetype = RC_NOCACHE,
685 		.pc_xdrressize = ST+AT,
686 	},
687 	[NFS3PROC_SETATTR] = {
688 		.pc_func = (svc_procfunc) nfsd3_proc_setattr,
689 		.pc_decode = (kxdrproc_t) nfs3svc_decode_sattrargs,
690 		.pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
691 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
692 		.pc_argsize = sizeof(struct nfsd3_sattrargs),
693 		.pc_ressize = sizeof(struct nfsd3_wccstatres),
694 		.pc_cachetype = RC_REPLBUFF,
695 		.pc_xdrressize = ST+WC,
696 	},
697 	[NFS3PROC_LOOKUP] = {
698 		.pc_func = (svc_procfunc) nfsd3_proc_lookup,
699 		.pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
700 		.pc_encode = (kxdrproc_t) nfs3svc_encode_diropres,
701 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
702 		.pc_argsize = sizeof(struct nfsd3_diropargs),
703 		.pc_ressize = sizeof(struct nfsd3_diropres),
704 		.pc_cachetype = RC_NOCACHE,
705 		.pc_xdrressize = ST+FH+pAT+pAT,
706 	},
707 	[NFS3PROC_ACCESS] = {
708 		.pc_func = (svc_procfunc) nfsd3_proc_access,
709 		.pc_decode = (kxdrproc_t) nfs3svc_decode_accessargs,
710 		.pc_encode = (kxdrproc_t) nfs3svc_encode_accessres,
711 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
712 		.pc_argsize = sizeof(struct nfsd3_accessargs),
713 		.pc_ressize = sizeof(struct nfsd3_accessres),
714 		.pc_cachetype = RC_NOCACHE,
715 		.pc_xdrressize = ST+pAT+1,
716 	},
717 	[NFS3PROC_READLINK] = {
718 		.pc_func = (svc_procfunc) nfsd3_proc_readlink,
719 		.pc_decode = (kxdrproc_t) nfs3svc_decode_readlinkargs,
720 		.pc_encode = (kxdrproc_t) nfs3svc_encode_readlinkres,
721 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
722 		.pc_argsize = sizeof(struct nfsd3_readlinkargs),
723 		.pc_ressize = sizeof(struct nfsd3_readlinkres),
724 		.pc_cachetype = RC_NOCACHE,
725 		.pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4,
726 	},
727 	[NFS3PROC_READ] = {
728 		.pc_func = (svc_procfunc) nfsd3_proc_read,
729 		.pc_decode = (kxdrproc_t) nfs3svc_decode_readargs,
730 		.pc_encode = (kxdrproc_t) nfs3svc_encode_readres,
731 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
732 		.pc_argsize = sizeof(struct nfsd3_readargs),
733 		.pc_ressize = sizeof(struct nfsd3_readres),
734 		.pc_cachetype = RC_NOCACHE,
735 		.pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4,
736 	},
737 	[NFS3PROC_WRITE] = {
738 		.pc_func = (svc_procfunc) nfsd3_proc_write,
739 		.pc_decode = (kxdrproc_t) nfs3svc_decode_writeargs,
740 		.pc_encode = (kxdrproc_t) nfs3svc_encode_writeres,
741 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
742 		.pc_argsize = sizeof(struct nfsd3_writeargs),
743 		.pc_ressize = sizeof(struct nfsd3_writeres),
744 		.pc_cachetype = RC_REPLBUFF,
745 		.pc_xdrressize = ST+WC+4,
746 	},
747 	[NFS3PROC_CREATE] = {
748 		.pc_func = (svc_procfunc) nfsd3_proc_create,
749 		.pc_decode = (kxdrproc_t) nfs3svc_decode_createargs,
750 		.pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
751 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
752 		.pc_argsize = sizeof(struct nfsd3_createargs),
753 		.pc_ressize = sizeof(struct nfsd3_createres),
754 		.pc_cachetype = RC_REPLBUFF,
755 		.pc_xdrressize = ST+(1+FH+pAT)+WC,
756 	},
757 	[NFS3PROC_MKDIR] = {
758 		.pc_func = (svc_procfunc) nfsd3_proc_mkdir,
759 		.pc_decode = (kxdrproc_t) nfs3svc_decode_mkdirargs,
760 		.pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
761 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
762 		.pc_argsize = sizeof(struct nfsd3_mkdirargs),
763 		.pc_ressize = sizeof(struct nfsd3_createres),
764 		.pc_cachetype = RC_REPLBUFF,
765 		.pc_xdrressize = ST+(1+FH+pAT)+WC,
766 	},
767 	[NFS3PROC_SYMLINK] = {
768 		.pc_func = (svc_procfunc) nfsd3_proc_symlink,
769 		.pc_decode = (kxdrproc_t) nfs3svc_decode_symlinkargs,
770 		.pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
771 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
772 		.pc_argsize = sizeof(struct nfsd3_symlinkargs),
773 		.pc_ressize = sizeof(struct nfsd3_createres),
774 		.pc_cachetype = RC_REPLBUFF,
775 		.pc_xdrressize = ST+(1+FH+pAT)+WC,
776 	},
777 	[NFS3PROC_MKNOD] = {
778 		.pc_func = (svc_procfunc) nfsd3_proc_mknod,
779 		.pc_decode = (kxdrproc_t) nfs3svc_decode_mknodargs,
780 		.pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
781 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
782 		.pc_argsize = sizeof(struct nfsd3_mknodargs),
783 		.pc_ressize = sizeof(struct nfsd3_createres),
784 		.pc_cachetype = RC_REPLBUFF,
785 		.pc_xdrressize = ST+(1+FH+pAT)+WC,
786 	},
787 	[NFS3PROC_REMOVE] = {
788 		.pc_func = (svc_procfunc) nfsd3_proc_remove,
789 		.pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
790 		.pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
791 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
792 		.pc_argsize = sizeof(struct nfsd3_diropargs),
793 		.pc_ressize = sizeof(struct nfsd3_wccstatres),
794 		.pc_cachetype = RC_REPLBUFF,
795 		.pc_xdrressize = ST+WC,
796 	},
797 	[NFS3PROC_RMDIR] = {
798 		.pc_func = (svc_procfunc) nfsd3_proc_rmdir,
799 		.pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
800 		.pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
801 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
802 		.pc_argsize = sizeof(struct nfsd3_diropargs),
803 		.pc_ressize = sizeof(struct nfsd3_wccstatres),
804 		.pc_cachetype = RC_REPLBUFF,
805 		.pc_xdrressize = ST+WC,
806 	},
807 	[NFS3PROC_RENAME] = {
808 		.pc_func = (svc_procfunc) nfsd3_proc_rename,
809 		.pc_decode = (kxdrproc_t) nfs3svc_decode_renameargs,
810 		.pc_encode = (kxdrproc_t) nfs3svc_encode_renameres,
811 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
812 		.pc_argsize = sizeof(struct nfsd3_renameargs),
813 		.pc_ressize = sizeof(struct nfsd3_renameres),
814 		.pc_cachetype = RC_REPLBUFF,
815 		.pc_xdrressize = ST+WC+WC,
816 	},
817 	[NFS3PROC_LINK] = {
818 		.pc_func = (svc_procfunc) nfsd3_proc_link,
819 		.pc_decode = (kxdrproc_t) nfs3svc_decode_linkargs,
820 		.pc_encode = (kxdrproc_t) nfs3svc_encode_linkres,
821 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
822 		.pc_argsize = sizeof(struct nfsd3_linkargs),
823 		.pc_ressize = sizeof(struct nfsd3_linkres),
824 		.pc_cachetype = RC_REPLBUFF,
825 		.pc_xdrressize = ST+pAT+WC,
826 	},
827 	[NFS3PROC_READDIR] = {
828 		.pc_func = (svc_procfunc) nfsd3_proc_readdir,
829 		.pc_decode = (kxdrproc_t) nfs3svc_decode_readdirargs,
830 		.pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
831 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
832 		.pc_argsize = sizeof(struct nfsd3_readdirargs),
833 		.pc_ressize = sizeof(struct nfsd3_readdirres),
834 		.pc_cachetype = RC_NOCACHE,
835 	},
836 	[NFS3PROC_READDIRPLUS] = {
837 		.pc_func = (svc_procfunc) nfsd3_proc_readdirplus,
838 		.pc_decode = (kxdrproc_t) nfs3svc_decode_readdirplusargs,
839 		.pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
840 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
841 		.pc_argsize = sizeof(struct nfsd3_readdirplusargs),
842 		.pc_ressize = sizeof(struct nfsd3_readdirres),
843 		.pc_cachetype = RC_NOCACHE,
844 	},
845 	[NFS3PROC_FSSTAT] = {
846 		.pc_func = (svc_procfunc) nfsd3_proc_fsstat,
847 		.pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
848 		.pc_encode = (kxdrproc_t) nfs3svc_encode_fsstatres,
849 		.pc_argsize = sizeof(struct nfsd3_fhandleargs),
850 		.pc_ressize = sizeof(struct nfsd3_fsstatres),
851 		.pc_cachetype = RC_NOCACHE,
852 		.pc_xdrressize = ST+pAT+2*6+1,
853 	},
854 	[NFS3PROC_FSINFO] = {
855 		.pc_func = (svc_procfunc) nfsd3_proc_fsinfo,
856 		.pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
857 		.pc_encode = (kxdrproc_t) nfs3svc_encode_fsinfores,
858 		.pc_argsize = sizeof(struct nfsd3_fhandleargs),
859 		.pc_ressize = sizeof(struct nfsd3_fsinfores),
860 		.pc_cachetype = RC_NOCACHE,
861 		.pc_xdrressize = ST+pAT+12,
862 	},
863 	[NFS3PROC_PATHCONF] = {
864 		.pc_func = (svc_procfunc) nfsd3_proc_pathconf,
865 		.pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
866 		.pc_encode = (kxdrproc_t) nfs3svc_encode_pathconfres,
867 		.pc_argsize = sizeof(struct nfsd3_fhandleargs),
868 		.pc_ressize = sizeof(struct nfsd3_pathconfres),
869 		.pc_cachetype = RC_NOCACHE,
870 		.pc_xdrressize = ST+pAT+6,
871 	},
872 	[NFS3PROC_COMMIT] = {
873 		.pc_func = (svc_procfunc) nfsd3_proc_commit,
874 		.pc_decode = (kxdrproc_t) nfs3svc_decode_commitargs,
875 		.pc_encode = (kxdrproc_t) nfs3svc_encode_commitres,
876 		.pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
877 		.pc_argsize = sizeof(struct nfsd3_commitargs),
878 		.pc_ressize = sizeof(struct nfsd3_commitres),
879 		.pc_cachetype = RC_NOCACHE,
880 		.pc_xdrressize = ST+WC+2,
881 	},
882 };
883 
884 struct svc_version	nfsd_version3 = {
885 		.vs_vers	= 3,
886 		.vs_nproc	= 22,
887 		.vs_proc	= nfsd_procedures3,
888 		.vs_dispatch	= nfsd_dispatch,
889 		.vs_xdrsize	= NFS3_SVC_XDRSIZE,
890 };
891