2 * Process version 2 NFS requests.
4 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
7 #include <linux/namei.h>
13 typedef struct svc_rqst svc_rqst;
14 typedef struct svc_buf svc_buf;
16 #define NFSDDBG_FACILITY NFSDDBG_PROC
20 nfsd_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
26 nfsd_return_attrs(__be32 err, struct nfsd_attrstat *resp)
29 return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt,
34 nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp)
37 return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt,
42 * Get a file's attributes
43 * N.B. After this call resp->fh needs an fh_put
46 nfsd_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp,
47 struct nfsd_attrstat *resp)
50 dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
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 return nfsd_return_attrs(nfserr, resp);
59 * Set a file's attributes
60 * N.B. After this call resp->fh needs an fh_put
63 nfsd_proc_setattr(struct svc_rqst *rqstp, struct nfsd_sattrargs *argp,
64 struct nfsd_attrstat *resp)
67 dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n",
69 argp->attrs.ia_valid, (long) argp->attrs.ia_size);
71 fh_copy(&resp->fh, &argp->fh);
72 nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,0, (time_t)0);
73 return nfsd_return_attrs(nfserr, resp);
77 * Look up a path name component
78 * Note: the dentry in the resp->fh may be negative if the file
80 * N.B. After this call resp->fh needs an fh_put
83 nfsd_proc_lookup(struct svc_rqst *rqstp, struct nfsd_diropargs *argp,
84 struct nfsd_diropres *resp)
88 dprintk("nfsd: LOOKUP %s %.*s\n",
89 SVCFH_fmt(&argp->fh), argp->len, argp->name);
91 fh_init(&resp->fh, NFS_FHSIZE);
92 nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len,
96 return nfsd_return_dirop(nfserr, resp);
103 nfsd_proc_readlink(struct svc_rqst *rqstp, struct nfsd_readlinkargs *argp,
104 struct nfsd_readlinkres *resp)
108 dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
110 /* Read the symlink. */
111 resp->len = NFS_MAXPATHLEN;
112 nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len);
119 * Read a portion of a file.
120 * N.B. After this call resp->fh needs an fh_put
123 nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp,
124 struct nfsd_readres *resp)
128 dprintk("nfsd: READ %s %d bytes at %d\n",
129 SVCFH_fmt(&argp->fh),
130 argp->count, argp->offset);
132 /* Obtain buffer pointer for payload. 19 is 1 word for
133 * status, 17 words for fattr, and 1 word for the byte count.
136 if (NFSSVC_MAXBLKSIZE_V2 < argp->count) {
137 char buf[RPC_MAX_ADDRBUFLEN];
139 "oversized read request from %s (%d bytes)\n",
140 svc_print_addr(rqstp, buf, sizeof(buf)),
142 argp->count = NFSSVC_MAXBLKSIZE_V2;
144 svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
146 resp->count = argp->count;
147 nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), NULL,
149 rqstp->rq_vec, argp->vlen,
152 if (nfserr) return nfserr;
153 return nfserrno(vfs_getattr(resp->fh.fh_export->ex_path.mnt,
159 * Write data to a file
160 * N.B. After this call resp->fh needs an fh_put
163 nfsd_proc_write(struct svc_rqst *rqstp, struct nfsd_writeargs *argp,
164 struct nfsd_attrstat *resp)
168 unsigned long cnt = argp->len;
170 dprintk("nfsd: WRITE %s %d bytes at %d\n",
171 SVCFH_fmt(&argp->fh),
172 argp->len, argp->offset);
174 nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL,
176 rqstp->rq_vec, argp->vlen,
179 return nfsd_return_attrs(nfserr, resp);
183 * CREATE processing is complicated. The keyword here is `overloaded.'
184 * The parent directory is kept locked between the check for existence
185 * and the actual create() call in compliance with VFS protocols.
186 * N.B. After this call _both_ argp->fh and resp->fh need an fh_put
189 nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp,
190 struct nfsd_diropres *resp)
192 svc_fh *dirfhp = &argp->fh;
193 svc_fh *newfhp = &resp->fh;
194 struct iattr *attr = &argp->attrs;
196 struct dentry *dchild;
199 dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size);
201 dprintk("nfsd: CREATE %s %.*s\n",
202 SVCFH_fmt(dirfhp), argp->len, argp->name);
204 /* First verify the parent file handle */
205 nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
207 goto done; /* must fh_put dirfhp even on error */
209 /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */
211 nfserr = nfserr_acces;
214 nfserr = nfserr_exist;
215 if (isdotent(argp->name, argp->len))
217 fh_lock_nested(dirfhp, I_MUTEX_PARENT);
218 dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len);
219 if (IS_ERR(dchild)) {
220 nfserr = nfserrno(PTR_ERR(dchild));
223 fh_init(newfhp, NFS_FHSIZE);
224 nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
225 if (!nfserr && !dchild->d_inode)
226 nfserr = nfserr_noent;
229 if (nfserr != nfserr_noent)
232 * If the new file handle wasn't verified, we can't tell
233 * whether the file exists or not. Time to bail ...
235 nfserr = nfserr_acces;
236 if (!newfhp->fh_dentry) {
238 "nfsd_proc_create: file handle not verified\n");
243 inode = newfhp->fh_dentry->d_inode;
245 /* Unfudge the mode bits */
246 if (attr->ia_valid & ATTR_MODE) {
247 type = attr->ia_mode & S_IFMT;
248 mode = attr->ia_mode & ~S_IFMT;
250 /* no type, so if target exists, assume same as that,
251 * else assume a file */
253 type = inode->i_mode & S_IFMT;
257 /* reserve rdev for later checking */
258 rdev = inode->i_rdev;
259 attr->ia_valid |= ATTR_SIZE;
263 /* this is probably a permission check..
264 * at least IRIX implements perm checking on
265 * echo thing > device-special-file-or-pipe
266 * by doing a CREATE with type==0
268 nfserr = nfsd_permission(rqstp,
271 NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS);
272 if (nfserr && nfserr != nfserr_rofs)
279 type = inode->i_mode & S_IFMT;
280 mode = inode->i_mode & ~S_IFMT;
286 attr->ia_valid |= ATTR_MODE;
287 attr->ia_mode = mode;
289 /* Special treatment for non-regular files according to the
290 * gospel of sun micro
292 if (type != S_IFREG) {
294 if (type != S_IFBLK && type != S_IFCHR) {
296 } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) {
297 /* If you think you've seen the worst, grok this. */
300 /* Okay, char or block special */
306 /* we've used the SIZE information, so discard it */
307 attr->ia_valid &= ~ATTR_SIZE;
309 /* Make sure the type and device matches */
310 nfserr = nfserr_exist;
311 if (inode && type != (inode->i_mode & S_IFMT))
317 /* File doesn't exist. Create it and set attrs */
318 nfserr = nfsd_create(rqstp, dirfhp, argp->name, argp->len,
319 attr, type, rdev, newfhp);
320 } else if (type == S_IFREG) {
321 dprintk("nfsd: existing %s, valid=%x, size=%ld\n",
322 argp->name, attr->ia_valid, (long) attr->ia_size);
323 /* File already exists. We ignore all attributes except
324 * size, so that creat() behaves exactly like
325 * open(..., O_CREAT|O_TRUNC|O_WRONLY).
327 attr->ia_valid &= ATTR_SIZE;
329 nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0);
333 /* We don't really need to unlock, as fh_put does it. */
338 return nfsd_return_dirop(nfserr, resp);
342 nfsd_proc_remove(struct svc_rqst *rqstp, struct nfsd_diropargs *argp,
347 dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh),
348 argp->len, argp->name);
350 /* Unlink. -SIFDIR means file must not be a directory */
351 nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len);
357 nfsd_proc_rename(struct svc_rqst *rqstp, struct nfsd_renameargs *argp,
362 dprintk("nfsd: RENAME %s %.*s -> \n",
363 SVCFH_fmt(&argp->ffh), argp->flen, argp->fname);
364 dprintk("nfsd: -> %s %.*s\n",
365 SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname);
367 nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen,
368 &argp->tfh, argp->tname, argp->tlen);
375 nfsd_proc_link(struct svc_rqst *rqstp, struct nfsd_linkargs *argp,
380 dprintk("nfsd: LINK %s ->\n",
381 SVCFH_fmt(&argp->ffh));
382 dprintk("nfsd: %s %.*s\n",
383 SVCFH_fmt(&argp->tfh),
387 nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen,
395 nfsd_proc_symlink(struct svc_rqst *rqstp, struct nfsd_symlinkargs *argp,
401 dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n",
402 SVCFH_fmt(&argp->ffh), argp->flen, argp->fname,
403 argp->tlen, argp->tname);
405 fh_init(&newfh, NFS_FHSIZE);
407 * Create the link, look up new file and set attrs.
409 nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen,
410 argp->tname, argp->tlen,
411 &newfh, &argp->attrs);
420 * Make directory. This operation is not idempotent.
421 * N.B. After this call resp->fh needs an fh_put
424 nfsd_proc_mkdir(struct svc_rqst *rqstp, struct nfsd_createargs *argp,
425 struct nfsd_diropres *resp)
429 dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
431 if (resp->fh.fh_dentry) {
433 "nfsd_proc_mkdir: response already verified??\n");
436 argp->attrs.ia_valid &= ~ATTR_SIZE;
437 fh_init(&resp->fh, NFS_FHSIZE);
438 nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
439 &argp->attrs, S_IFDIR, 0, &resp->fh);
441 return nfsd_return_dirop(nfserr, resp);
448 nfsd_proc_rmdir(struct svc_rqst *rqstp, struct nfsd_diropargs *argp,
453 dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
455 nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len);
461 * Read a portion of a directory.
464 nfsd_proc_readdir(struct svc_rqst *rqstp, struct nfsd_readdirargs *argp,
465 struct nfsd_readdirres *resp)
471 dprintk("nfsd: READDIR %s %d bytes at %d\n",
472 SVCFH_fmt(&argp->fh),
473 argp->count, argp->cookie);
475 /* Shrink to the client read size */
476 count = (argp->count >> 2) - 2;
478 /* Make sure we've room for the NULL ptr & eof flag */
483 resp->buffer = argp->buffer;
485 resp->buflen = count;
486 resp->common.err = nfs_ok;
487 /* Read directory and encode entries on the fly */
488 offset = argp->cookie;
489 nfserr = nfsd_readdir(rqstp, &argp->fh, &offset,
490 &resp->common, nfssvc_encode_entry);
492 resp->count = resp->buffer - argp->buffer;
494 *resp->offset = htonl(offset);
501 * Get file system info
504 nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
505 struct nfsd_statfsres *resp)
509 dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh));
511 nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
512 NFSD_MAY_BYPASS_GSS_ON_ROOT);
518 * NFSv2 Server procedures.
519 * Only the results of non-idempotent operations are cached.
521 struct nfsd_void { int dummy; };
523 #define ST 1 /* status */
524 #define FH 8 /* filehandle */
525 #define AT 18 /* attributes */
527 static struct svc_procedure nfsd_procedures2[18] = {
529 .pc_func = (svc_procfunc) nfsd_proc_null,
530 .pc_decode = (kxdrproc_t) nfssvc_decode_void,
531 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
532 .pc_argsize = sizeof(struct nfsd_void),
533 .pc_ressize = sizeof(struct nfsd_void),
534 .pc_cachetype = RC_NOCACHE,
537 [NFSPROC_GETATTR] = {
538 .pc_func = (svc_procfunc) nfsd_proc_getattr,
539 .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
540 .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
541 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
542 .pc_argsize = sizeof(struct nfsd_fhandle),
543 .pc_ressize = sizeof(struct nfsd_attrstat),
544 .pc_cachetype = RC_NOCACHE,
545 .pc_xdrressize = ST+AT,
547 [NFSPROC_SETATTR] = {
548 .pc_func = (svc_procfunc) nfsd_proc_setattr,
549 .pc_decode = (kxdrproc_t) nfssvc_decode_sattrargs,
550 .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
551 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
552 .pc_argsize = sizeof(struct nfsd_sattrargs),
553 .pc_ressize = sizeof(struct nfsd_attrstat),
554 .pc_cachetype = RC_REPLBUFF,
555 .pc_xdrressize = ST+AT,
558 .pc_decode = (kxdrproc_t) nfssvc_decode_void,
559 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
560 .pc_argsize = sizeof(struct nfsd_void),
561 .pc_ressize = sizeof(struct nfsd_void),
562 .pc_cachetype = RC_NOCACHE,
566 .pc_func = (svc_procfunc) nfsd_proc_lookup,
567 .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
568 .pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
569 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
570 .pc_argsize = sizeof(struct nfsd_diropargs),
571 .pc_ressize = sizeof(struct nfsd_diropres),
572 .pc_cachetype = RC_NOCACHE,
573 .pc_xdrressize = ST+FH+AT,
575 [NFSPROC_READLINK] = {
576 .pc_func = (svc_procfunc) nfsd_proc_readlink,
577 .pc_decode = (kxdrproc_t) nfssvc_decode_readlinkargs,
578 .pc_encode = (kxdrproc_t) nfssvc_encode_readlinkres,
579 .pc_argsize = sizeof(struct nfsd_readlinkargs),
580 .pc_ressize = sizeof(struct nfsd_readlinkres),
581 .pc_cachetype = RC_NOCACHE,
582 .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
585 .pc_func = (svc_procfunc) nfsd_proc_read,
586 .pc_decode = (kxdrproc_t) nfssvc_decode_readargs,
587 .pc_encode = (kxdrproc_t) nfssvc_encode_readres,
588 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
589 .pc_argsize = sizeof(struct nfsd_readargs),
590 .pc_ressize = sizeof(struct nfsd_readres),
591 .pc_cachetype = RC_NOCACHE,
592 .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
594 [NFSPROC_WRITECACHE] = {
595 .pc_decode = (kxdrproc_t) nfssvc_decode_void,
596 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
597 .pc_argsize = sizeof(struct nfsd_void),
598 .pc_ressize = sizeof(struct nfsd_void),
599 .pc_cachetype = RC_NOCACHE,
603 .pc_func = (svc_procfunc) nfsd_proc_write,
604 .pc_decode = (kxdrproc_t) nfssvc_decode_writeargs,
605 .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
606 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
607 .pc_argsize = sizeof(struct nfsd_writeargs),
608 .pc_ressize = sizeof(struct nfsd_attrstat),
609 .pc_cachetype = RC_REPLBUFF,
610 .pc_xdrressize = ST+AT,
613 .pc_func = (svc_procfunc) nfsd_proc_create,
614 .pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
615 .pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
616 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
617 .pc_argsize = sizeof(struct nfsd_createargs),
618 .pc_ressize = sizeof(struct nfsd_diropres),
619 .pc_cachetype = RC_REPLBUFF,
620 .pc_xdrressize = ST+FH+AT,
623 .pc_func = (svc_procfunc) nfsd_proc_remove,
624 .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
625 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
626 .pc_argsize = sizeof(struct nfsd_diropargs),
627 .pc_ressize = sizeof(struct nfsd_void),
628 .pc_cachetype = RC_REPLSTAT,
632 .pc_func = (svc_procfunc) nfsd_proc_rename,
633 .pc_decode = (kxdrproc_t) nfssvc_decode_renameargs,
634 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
635 .pc_argsize = sizeof(struct nfsd_renameargs),
636 .pc_ressize = sizeof(struct nfsd_void),
637 .pc_cachetype = RC_REPLSTAT,
641 .pc_func = (svc_procfunc) nfsd_proc_link,
642 .pc_decode = (kxdrproc_t) nfssvc_decode_linkargs,
643 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
644 .pc_argsize = sizeof(struct nfsd_linkargs),
645 .pc_ressize = sizeof(struct nfsd_void),
646 .pc_cachetype = RC_REPLSTAT,
649 [NFSPROC_SYMLINK] = {
650 .pc_func = (svc_procfunc) nfsd_proc_symlink,
651 .pc_decode = (kxdrproc_t) nfssvc_decode_symlinkargs,
652 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
653 .pc_argsize = sizeof(struct nfsd_symlinkargs),
654 .pc_ressize = sizeof(struct nfsd_void),
655 .pc_cachetype = RC_REPLSTAT,
659 .pc_func = (svc_procfunc) nfsd_proc_mkdir,
660 .pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
661 .pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
662 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
663 .pc_argsize = sizeof(struct nfsd_createargs),
664 .pc_ressize = sizeof(struct nfsd_diropres),
665 .pc_cachetype = RC_REPLBUFF,
666 .pc_xdrressize = ST+FH+AT,
669 .pc_func = (svc_procfunc) nfsd_proc_rmdir,
670 .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
671 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
672 .pc_argsize = sizeof(struct nfsd_diropargs),
673 .pc_ressize = sizeof(struct nfsd_void),
674 .pc_cachetype = RC_REPLSTAT,
677 [NFSPROC_READDIR] = {
678 .pc_func = (svc_procfunc) nfsd_proc_readdir,
679 .pc_decode = (kxdrproc_t) nfssvc_decode_readdirargs,
680 .pc_encode = (kxdrproc_t) nfssvc_encode_readdirres,
681 .pc_argsize = sizeof(struct nfsd_readdirargs),
682 .pc_ressize = sizeof(struct nfsd_readdirres),
683 .pc_cachetype = RC_NOCACHE,
686 .pc_func = (svc_procfunc) nfsd_proc_statfs,
687 .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
688 .pc_encode = (kxdrproc_t) nfssvc_encode_statfsres,
689 .pc_argsize = sizeof(struct nfsd_fhandle),
690 .pc_ressize = sizeof(struct nfsd_statfsres),
691 .pc_cachetype = RC_NOCACHE,
692 .pc_xdrressize = ST+5,
697 struct svc_version nfsd_version2 = {
700 .vs_proc = nfsd_procedures2,
701 .vs_dispatch = nfsd_dispatch,
702 .vs_xdrsize = NFS2_SVC_XDRSIZE,
706 * Map errnos to NFS errnos.
716 { nfserr_perm, -EPERM },
717 { nfserr_noent, -ENOENT },
719 { nfserr_nxio, -ENXIO },
720 { nfserr_acces, -EACCES },
721 { nfserr_exist, -EEXIST },
722 { nfserr_xdev, -EXDEV },
723 { nfserr_mlink, -EMLINK },
724 { nfserr_nodev, -ENODEV },
725 { nfserr_notdir, -ENOTDIR },
726 { nfserr_isdir, -EISDIR },
727 { nfserr_inval, -EINVAL },
728 { nfserr_fbig, -EFBIG },
729 { nfserr_nospc, -ENOSPC },
730 { nfserr_rofs, -EROFS },
731 { nfserr_mlink, -EMLINK },
732 { nfserr_nametoolong, -ENAMETOOLONG },
733 { nfserr_notempty, -ENOTEMPTY },
735 { nfserr_dquot, -EDQUOT },
737 { nfserr_stale, -ESTALE },
738 { nfserr_jukebox, -ETIMEDOUT },
739 { nfserr_jukebox, -ERESTARTSYS },
740 { nfserr_dropit, -EAGAIN },
741 { nfserr_dropit, -ENOMEM },
742 { nfserr_badname, -ESRCH },
743 { nfserr_io, -ETXTBSY },
744 { nfserr_notsupp, -EOPNOTSUPP },
745 { nfserr_toosmall, -ETOOSMALL },
746 { nfserr_serverfault, -ESERVERFAULT },
750 for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) {
751 if (nfs_errtbl[i].syserr == errno)
752 return nfs_errtbl[i].nfserr;
754 printk (KERN_INFO "nfsd: non-standard errno: %d\n", errno);