1 // SPDX-License-Identifier: GPL-2.0
3 * Process version 2 NFS requests.
8 #include <linux/namei.h>
14 typedef struct svc_rqst svc_rqst;
15 typedef struct svc_buf svc_buf;
17 #define NFSDDBG_FACILITY NFSDDBG_PROC
21 nfsd_proc_null(struct svc_rqst *rqstp)
27 nfsd_return_attrs(__be32 err, struct nfsd_attrstat *resp)
30 return fh_getattr(&resp->fh, &resp->stat);
33 nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp)
36 return fh_getattr(&resp->fh, &resp->stat);
39 * Get a file's attributes
40 * N.B. After this call resp->fh needs an fh_put
43 nfsd_proc_getattr(struct svc_rqst *rqstp)
45 struct nfsd_fhandle *argp = rqstp->rq_argp;
46 struct nfsd_attrstat *resp = rqstp->rq_resp;
48 dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
50 fh_copy(&resp->fh, &argp->fh);
51 nfserr = fh_verify(rqstp, &resp->fh, 0,
52 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
53 return nfsd_return_attrs(nfserr, resp);
57 * Set a file's attributes
58 * N.B. After this call resp->fh needs an fh_put
61 nfsd_proc_setattr(struct svc_rqst *rqstp)
63 struct nfsd_sattrargs *argp = rqstp->rq_argp;
64 struct nfsd_attrstat *resp = rqstp->rq_resp;
65 struct iattr *iap = &argp->attrs;
69 dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n",
71 argp->attrs.ia_valid, (long) argp->attrs.ia_size);
73 fhp = fh_copy(&resp->fh, &argp->fh);
76 * NFSv2 does not differentiate between "set-[ac]time-to-now"
77 * which only requires access, and "set-[ac]time-to-X" which
79 * So if it looks like it might be "set both to the same time which
80 * is close to now", and if setattr_prepare fails, then we
81 * convert to "set to now" instead of "set to explicit time"
83 * We only call setattr_prepare as the last test as technically
84 * it is not an interface that we should be using.
86 #define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
87 #define MAX_TOUCH_TIME_ERROR (30*60)
88 if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET &&
89 iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) {
93 * Now just make sure time is in the right ballpark.
94 * Solaris, at least, doesn't seem to care what the time
95 * request is. We require it be within 30 minutes of now.
97 time_t delta = iap->ia_atime.tv_sec - get_seconds();
99 nfserr = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
105 if (delta < MAX_TOUCH_TIME_ERROR &&
106 setattr_prepare(fhp->fh_dentry, iap) != 0) {
108 * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME.
109 * This will cause notify_change to set these times
112 iap->ia_valid &= ~BOTH_TIME_SET;
116 nfserr = nfsd_setattr(rqstp, fhp, iap, 0, (time_t)0);
118 return nfsd_return_attrs(nfserr, resp);
122 * Look up a path name component
123 * Note: the dentry in the resp->fh may be negative if the file
125 * N.B. After this call resp->fh needs an fh_put
128 nfsd_proc_lookup(struct svc_rqst *rqstp)
130 struct nfsd_diropargs *argp = rqstp->rq_argp;
131 struct nfsd_diropres *resp = rqstp->rq_resp;
134 dprintk("nfsd: LOOKUP %s %.*s\n",
135 SVCFH_fmt(&argp->fh), argp->len, argp->name);
137 fh_init(&resp->fh, NFS_FHSIZE);
138 nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len,
142 return nfsd_return_dirop(nfserr, resp);
149 nfsd_proc_readlink(struct svc_rqst *rqstp)
151 struct nfsd_readlinkargs *argp = rqstp->rq_argp;
152 struct nfsd_readlinkres *resp = rqstp->rq_resp;
155 dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
157 /* Read the symlink. */
158 resp->len = NFS_MAXPATHLEN;
159 nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len);
166 * Read a portion of a file.
167 * N.B. After this call resp->fh needs an fh_put
170 nfsd_proc_read(struct svc_rqst *rqstp)
172 struct nfsd_readargs *argp = rqstp->rq_argp;
173 struct nfsd_readres *resp = rqstp->rq_resp;
176 dprintk("nfsd: READ %s %d bytes at %d\n",
177 SVCFH_fmt(&argp->fh),
178 argp->count, argp->offset);
180 /* Obtain buffer pointer for payload. 19 is 1 word for
181 * status, 17 words for fattr, and 1 word for the byte count.
184 if (NFSSVC_MAXBLKSIZE_V2 < argp->count) {
185 char buf[RPC_MAX_ADDRBUFLEN];
187 "oversized read request from %s (%d bytes)\n",
188 svc_print_addr(rqstp, buf, sizeof(buf)),
190 argp->count = NFSSVC_MAXBLKSIZE_V2;
192 svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
194 resp->count = argp->count;
195 nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh),
197 rqstp->rq_vec, argp->vlen,
200 if (nfserr) return nfserr;
201 return fh_getattr(&resp->fh, &resp->stat);
205 * Write data to a file
206 * N.B. After this call resp->fh needs an fh_put
209 nfsd_proc_write(struct svc_rqst *rqstp)
211 struct nfsd_writeargs *argp = rqstp->rq_argp;
212 struct nfsd_attrstat *resp = rqstp->rq_resp;
214 unsigned long cnt = argp->len;
216 dprintk("nfsd: WRITE %s %d bytes at %d\n",
217 SVCFH_fmt(&argp->fh),
218 argp->len, argp->offset);
220 nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), argp->offset,
221 rqstp->rq_vec, argp->vlen, &cnt, NFS_DATA_SYNC);
222 return nfsd_return_attrs(nfserr, resp);
226 * CREATE processing is complicated. The keyword here is `overloaded.'
227 * The parent directory is kept locked between the check for existence
228 * and the actual create() call in compliance with VFS protocols.
229 * N.B. After this call _both_ argp->fh and resp->fh need an fh_put
232 nfsd_proc_create(struct svc_rqst *rqstp)
234 struct nfsd_createargs *argp = rqstp->rq_argp;
235 struct nfsd_diropres *resp = rqstp->rq_resp;
236 svc_fh *dirfhp = &argp->fh;
237 svc_fh *newfhp = &resp->fh;
238 struct iattr *attr = &argp->attrs;
240 struct dentry *dchild;
244 dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size);
246 dprintk("nfsd: CREATE %s %.*s\n",
247 SVCFH_fmt(dirfhp), argp->len, argp->name);
249 /* First verify the parent file handle */
250 nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
252 goto done; /* must fh_put dirfhp even on error */
254 /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */
256 nfserr = nfserr_exist;
257 if (isdotent(argp->name, argp->len))
259 hosterr = fh_want_write(dirfhp);
261 nfserr = nfserrno(hosterr);
265 fh_lock_nested(dirfhp, I_MUTEX_PARENT);
266 dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len);
267 if (IS_ERR(dchild)) {
268 nfserr = nfserrno(PTR_ERR(dchild));
271 fh_init(newfhp, NFS_FHSIZE);
272 nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
273 if (!nfserr && d_really_is_negative(dchild))
274 nfserr = nfserr_noent;
277 if (nfserr != nfserr_noent)
280 * If the new file handle wasn't verified, we can't tell
281 * whether the file exists or not. Time to bail ...
283 nfserr = nfserr_acces;
284 if (!newfhp->fh_dentry) {
286 "nfsd_proc_create: file handle not verified\n");
291 inode = d_inode(newfhp->fh_dentry);
293 /* Unfudge the mode bits */
294 if (attr->ia_valid & ATTR_MODE) {
295 type = attr->ia_mode & S_IFMT;
296 mode = attr->ia_mode & ~S_IFMT;
298 /* no type, so if target exists, assume same as that,
299 * else assume a file */
301 type = inode->i_mode & S_IFMT;
305 /* reserve rdev for later checking */
306 rdev = inode->i_rdev;
307 attr->ia_valid |= ATTR_SIZE;
311 /* this is probably a permission check..
312 * at least IRIX implements perm checking on
313 * echo thing > device-special-file-or-pipe
314 * by doing a CREATE with type==0
316 nfserr = nfsd_permission(rqstp,
319 NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS);
320 if (nfserr && nfserr != nfserr_rofs)
327 type = inode->i_mode & S_IFMT;
328 mode = inode->i_mode & ~S_IFMT;
334 attr->ia_valid |= ATTR_MODE;
335 attr->ia_mode = mode;
337 /* Special treatment for non-regular files according to the
338 * gospel of sun micro
340 if (type != S_IFREG) {
341 if (type != S_IFBLK && type != S_IFCHR) {
343 } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) {
344 /* If you think you've seen the worst, grok this. */
347 /* Okay, char or block special */
352 /* we've used the SIZE information, so discard it */
353 attr->ia_valid &= ~ATTR_SIZE;
355 /* Make sure the type and device matches */
356 nfserr = nfserr_exist;
357 if (inode && type != (inode->i_mode & S_IFMT))
363 /* File doesn't exist. Create it and set attrs */
364 nfserr = nfsd_create_locked(rqstp, dirfhp, argp->name,
365 argp->len, attr, type, rdev, newfhp);
366 } else if (type == S_IFREG) {
367 dprintk("nfsd: existing %s, valid=%x, size=%ld\n",
368 argp->name, attr->ia_valid, (long) attr->ia_size);
369 /* File already exists. We ignore all attributes except
370 * size, so that creat() behaves exactly like
371 * open(..., O_CREAT|O_TRUNC|O_WRONLY).
373 attr->ia_valid &= ATTR_SIZE;
375 nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0);
379 /* We don't really need to unlock, as fh_put does it. */
381 fh_drop_write(dirfhp);
384 return nfsd_return_dirop(nfserr, resp);
388 nfsd_proc_remove(struct svc_rqst *rqstp)
390 struct nfsd_diropargs *argp = rqstp->rq_argp;
393 dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh),
394 argp->len, argp->name);
396 /* Unlink. -SIFDIR means file must not be a directory */
397 nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len);
403 nfsd_proc_rename(struct svc_rqst *rqstp)
405 struct nfsd_renameargs *argp = rqstp->rq_argp;
408 dprintk("nfsd: RENAME %s %.*s -> \n",
409 SVCFH_fmt(&argp->ffh), argp->flen, argp->fname);
410 dprintk("nfsd: -> %s %.*s\n",
411 SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname);
413 nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen,
414 &argp->tfh, argp->tname, argp->tlen);
421 nfsd_proc_link(struct svc_rqst *rqstp)
423 struct nfsd_linkargs *argp = rqstp->rq_argp;
426 dprintk("nfsd: LINK %s ->\n",
427 SVCFH_fmt(&argp->ffh));
428 dprintk("nfsd: %s %.*s\n",
429 SVCFH_fmt(&argp->tfh),
433 nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen,
441 nfsd_proc_symlink(struct svc_rqst *rqstp)
443 struct nfsd_symlinkargs *argp = rqstp->rq_argp;
447 dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n",
448 SVCFH_fmt(&argp->ffh), argp->flen, argp->fname,
449 argp->tlen, argp->tname);
451 fh_init(&newfh, NFS_FHSIZE);
453 * Crazy hack: the request fits in a page, and already-decoded
454 * attributes follow argp->tname, so it's safe to just write a
455 * null to ensure it's null-terminated:
457 argp->tname[argp->tlen] = '\0';
458 nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen,
459 argp->tname, &newfh);
467 * Make directory. This operation is not idempotent.
468 * N.B. After this call resp->fh needs an fh_put
471 nfsd_proc_mkdir(struct svc_rqst *rqstp)
473 struct nfsd_createargs *argp = rqstp->rq_argp;
474 struct nfsd_diropres *resp = rqstp->rq_resp;
477 dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
479 if (resp->fh.fh_dentry) {
481 "nfsd_proc_mkdir: response already verified??\n");
484 argp->attrs.ia_valid &= ~ATTR_SIZE;
485 fh_init(&resp->fh, NFS_FHSIZE);
486 nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
487 &argp->attrs, S_IFDIR, 0, &resp->fh);
489 return nfsd_return_dirop(nfserr, resp);
496 nfsd_proc_rmdir(struct svc_rqst *rqstp)
498 struct nfsd_diropargs *argp = rqstp->rq_argp;
501 dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
503 nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len);
509 * Read a portion of a directory.
512 nfsd_proc_readdir(struct svc_rqst *rqstp)
514 struct nfsd_readdirargs *argp = rqstp->rq_argp;
515 struct nfsd_readdirres *resp = rqstp->rq_resp;
520 dprintk("nfsd: READDIR %s %d bytes at %d\n",
521 SVCFH_fmt(&argp->fh),
522 argp->count, argp->cookie);
524 /* Shrink to the client read size */
525 count = (argp->count >> 2) - 2;
527 /* Make sure we've room for the NULL ptr & eof flag */
532 resp->buffer = argp->buffer;
534 resp->buflen = count;
535 resp->common.err = nfs_ok;
536 /* Read directory and encode entries on the fly */
537 offset = argp->cookie;
538 nfserr = nfsd_readdir(rqstp, &argp->fh, &offset,
539 &resp->common, nfssvc_encode_entry);
541 resp->count = resp->buffer - argp->buffer;
543 *resp->offset = htonl(offset);
550 * Get file system info
553 nfsd_proc_statfs(struct svc_rqst *rqstp)
555 struct nfsd_fhandle *argp = rqstp->rq_argp;
556 struct nfsd_statfsres *resp = rqstp->rq_resp;
559 dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh));
561 nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
562 NFSD_MAY_BYPASS_GSS_ON_ROOT);
568 * NFSv2 Server procedures.
569 * Only the results of non-idempotent operations are cached.
571 struct nfsd_void { int dummy; };
573 #define ST 1 /* status */
574 #define FH 8 /* filehandle */
575 #define AT 18 /* attributes */
577 static const struct svc_procedure nfsd_procedures2[18] = {
579 .pc_func = nfsd_proc_null,
580 .pc_decode = nfssvc_decode_void,
581 .pc_encode = nfssvc_encode_void,
582 .pc_argsize = sizeof(struct nfsd_void),
583 .pc_ressize = sizeof(struct nfsd_void),
584 .pc_cachetype = RC_NOCACHE,
587 [NFSPROC_GETATTR] = {
588 .pc_func = nfsd_proc_getattr,
589 .pc_decode = nfssvc_decode_fhandle,
590 .pc_encode = nfssvc_encode_attrstat,
591 .pc_release = nfssvc_release_fhandle,
592 .pc_argsize = sizeof(struct nfsd_fhandle),
593 .pc_ressize = sizeof(struct nfsd_attrstat),
594 .pc_cachetype = RC_NOCACHE,
595 .pc_xdrressize = ST+AT,
597 [NFSPROC_SETATTR] = {
598 .pc_func = nfsd_proc_setattr,
599 .pc_decode = nfssvc_decode_sattrargs,
600 .pc_encode = nfssvc_encode_attrstat,
601 .pc_release = nfssvc_release_fhandle,
602 .pc_argsize = sizeof(struct nfsd_sattrargs),
603 .pc_ressize = sizeof(struct nfsd_attrstat),
604 .pc_cachetype = RC_REPLBUFF,
605 .pc_xdrressize = ST+AT,
608 .pc_decode = nfssvc_decode_void,
609 .pc_encode = nfssvc_encode_void,
610 .pc_argsize = sizeof(struct nfsd_void),
611 .pc_ressize = sizeof(struct nfsd_void),
612 .pc_cachetype = RC_NOCACHE,
616 .pc_func = nfsd_proc_lookup,
617 .pc_decode = nfssvc_decode_diropargs,
618 .pc_encode = nfssvc_encode_diropres,
619 .pc_release = nfssvc_release_fhandle,
620 .pc_argsize = sizeof(struct nfsd_diropargs),
621 .pc_ressize = sizeof(struct nfsd_diropres),
622 .pc_cachetype = RC_NOCACHE,
623 .pc_xdrressize = ST+FH+AT,
625 [NFSPROC_READLINK] = {
626 .pc_func = nfsd_proc_readlink,
627 .pc_decode = nfssvc_decode_readlinkargs,
628 .pc_encode = nfssvc_encode_readlinkres,
629 .pc_argsize = sizeof(struct nfsd_readlinkargs),
630 .pc_ressize = sizeof(struct nfsd_readlinkres),
631 .pc_cachetype = RC_NOCACHE,
632 .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
635 .pc_func = nfsd_proc_read,
636 .pc_decode = nfssvc_decode_readargs,
637 .pc_encode = nfssvc_encode_readres,
638 .pc_release = nfssvc_release_fhandle,
639 .pc_argsize = sizeof(struct nfsd_readargs),
640 .pc_ressize = sizeof(struct nfsd_readres),
641 .pc_cachetype = RC_NOCACHE,
642 .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
644 [NFSPROC_WRITECACHE] = {
645 .pc_decode = nfssvc_decode_void,
646 .pc_encode = nfssvc_encode_void,
647 .pc_argsize = sizeof(struct nfsd_void),
648 .pc_ressize = sizeof(struct nfsd_void),
649 .pc_cachetype = RC_NOCACHE,
653 .pc_func = nfsd_proc_write,
654 .pc_decode = nfssvc_decode_writeargs,
655 .pc_encode = nfssvc_encode_attrstat,
656 .pc_release = nfssvc_release_fhandle,
657 .pc_argsize = sizeof(struct nfsd_writeargs),
658 .pc_ressize = sizeof(struct nfsd_attrstat),
659 .pc_cachetype = RC_REPLBUFF,
660 .pc_xdrressize = ST+AT,
663 .pc_func = nfsd_proc_create,
664 .pc_decode = nfssvc_decode_createargs,
665 .pc_encode = nfssvc_encode_diropres,
666 .pc_release = nfssvc_release_fhandle,
667 .pc_argsize = sizeof(struct nfsd_createargs),
668 .pc_ressize = sizeof(struct nfsd_diropres),
669 .pc_cachetype = RC_REPLBUFF,
670 .pc_xdrressize = ST+FH+AT,
673 .pc_func = nfsd_proc_remove,
674 .pc_decode = nfssvc_decode_diropargs,
675 .pc_encode = nfssvc_encode_void,
676 .pc_argsize = sizeof(struct nfsd_diropargs),
677 .pc_ressize = sizeof(struct nfsd_void),
678 .pc_cachetype = RC_REPLSTAT,
682 .pc_func = nfsd_proc_rename,
683 .pc_decode = nfssvc_decode_renameargs,
684 .pc_encode = nfssvc_encode_void,
685 .pc_argsize = sizeof(struct nfsd_renameargs),
686 .pc_ressize = sizeof(struct nfsd_void),
687 .pc_cachetype = RC_REPLSTAT,
691 .pc_func = nfsd_proc_link,
692 .pc_decode = nfssvc_decode_linkargs,
693 .pc_encode = nfssvc_encode_void,
694 .pc_argsize = sizeof(struct nfsd_linkargs),
695 .pc_ressize = sizeof(struct nfsd_void),
696 .pc_cachetype = RC_REPLSTAT,
699 [NFSPROC_SYMLINK] = {
700 .pc_func = nfsd_proc_symlink,
701 .pc_decode = nfssvc_decode_symlinkargs,
702 .pc_encode = nfssvc_encode_void,
703 .pc_argsize = sizeof(struct nfsd_symlinkargs),
704 .pc_ressize = sizeof(struct nfsd_void),
705 .pc_cachetype = RC_REPLSTAT,
709 .pc_func = nfsd_proc_mkdir,
710 .pc_decode = nfssvc_decode_createargs,
711 .pc_encode = nfssvc_encode_diropres,
712 .pc_release = nfssvc_release_fhandle,
713 .pc_argsize = sizeof(struct nfsd_createargs),
714 .pc_ressize = sizeof(struct nfsd_diropres),
715 .pc_cachetype = RC_REPLBUFF,
716 .pc_xdrressize = ST+FH+AT,
719 .pc_func = nfsd_proc_rmdir,
720 .pc_decode = nfssvc_decode_diropargs,
721 .pc_encode = nfssvc_encode_void,
722 .pc_argsize = sizeof(struct nfsd_diropargs),
723 .pc_ressize = sizeof(struct nfsd_void),
724 .pc_cachetype = RC_REPLSTAT,
727 [NFSPROC_READDIR] = {
728 .pc_func = nfsd_proc_readdir,
729 .pc_decode = nfssvc_decode_readdirargs,
730 .pc_encode = nfssvc_encode_readdirres,
731 .pc_argsize = sizeof(struct nfsd_readdirargs),
732 .pc_ressize = sizeof(struct nfsd_readdirres),
733 .pc_cachetype = RC_NOCACHE,
736 .pc_func = nfsd_proc_statfs,
737 .pc_decode = nfssvc_decode_fhandle,
738 .pc_encode = nfssvc_encode_statfsres,
739 .pc_argsize = sizeof(struct nfsd_fhandle),
740 .pc_ressize = sizeof(struct nfsd_statfsres),
741 .pc_cachetype = RC_NOCACHE,
742 .pc_xdrressize = ST+5,
747 static unsigned int nfsd_count2[ARRAY_SIZE(nfsd_procedures2)];
748 const struct svc_version nfsd_version2 = {
751 .vs_proc = nfsd_procedures2,
752 .vs_count = nfsd_count2,
753 .vs_dispatch = nfsd_dispatch,
754 .vs_xdrsize = NFS2_SVC_XDRSIZE,
758 * Map errnos to NFS errnos.
768 { nfserr_perm, -EPERM },
769 { nfserr_noent, -ENOENT },
771 { nfserr_nxio, -ENXIO },
772 { nfserr_fbig, -E2BIG },
773 { nfserr_acces, -EACCES },
774 { nfserr_exist, -EEXIST },
775 { nfserr_xdev, -EXDEV },
776 { nfserr_mlink, -EMLINK },
777 { nfserr_nodev, -ENODEV },
778 { nfserr_notdir, -ENOTDIR },
779 { nfserr_isdir, -EISDIR },
780 { nfserr_inval, -EINVAL },
781 { nfserr_fbig, -EFBIG },
782 { nfserr_nospc, -ENOSPC },
783 { nfserr_rofs, -EROFS },
784 { nfserr_mlink, -EMLINK },
785 { nfserr_nametoolong, -ENAMETOOLONG },
786 { nfserr_notempty, -ENOTEMPTY },
788 { nfserr_dquot, -EDQUOT },
790 { nfserr_stale, -ESTALE },
791 { nfserr_jukebox, -ETIMEDOUT },
792 { nfserr_jukebox, -ERESTARTSYS },
793 { nfserr_jukebox, -EAGAIN },
794 { nfserr_jukebox, -EWOULDBLOCK },
795 { nfserr_jukebox, -ENOMEM },
796 { nfserr_io, -ETXTBSY },
797 { nfserr_notsupp, -EOPNOTSUPP },
798 { nfserr_toosmall, -ETOOSMALL },
799 { nfserr_serverfault, -ESERVERFAULT },
800 { nfserr_serverfault, -ENFILE },
801 { nfserr_io, -EUCLEAN },
802 { nfserr_perm, -ENOKEY },
806 for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) {
807 if (nfs_errtbl[i].syserr == errno)
808 return nfs_errtbl[i].nfserr;
810 WARN_ONCE(1, "nfsd: non-standard errno: %d\n", errno);