1 // SPDX-License-Identifier: GPL-2.0
3 * Process version 2 NFS requests.
8 #include <linux/namei.h>
14 #define NFSDDBG_FACILITY NFSDDBG_PROC
17 nfsd_proc_null(struct svc_rqst *rqstp)
23 * Get a file's attributes
24 * N.B. After this call resp->fh needs an fh_put
27 nfsd_proc_getattr(struct svc_rqst *rqstp)
29 struct nfsd_fhandle *argp = rqstp->rq_argp;
30 struct nfsd_attrstat *resp = rqstp->rq_resp;
32 dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
34 fh_copy(&resp->fh, &argp->fh);
35 resp->status = fh_verify(rqstp, &resp->fh, 0,
36 NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
37 if (resp->status != nfs_ok)
39 resp->status = fh_getattr(&resp->fh, &resp->stat);
45 * Set a file's attributes
46 * N.B. After this call resp->fh needs an fh_put
49 nfsd_proc_setattr(struct svc_rqst *rqstp)
51 struct nfsd_sattrargs *argp = rqstp->rq_argp;
52 struct nfsd_attrstat *resp = rqstp->rq_resp;
53 struct iattr *iap = &argp->attrs;
54 struct nfsd_attrs attrs = {
59 dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n",
61 argp->attrs.ia_valid, (long) argp->attrs.ia_size);
63 fhp = fh_copy(&resp->fh, &argp->fh);
66 * NFSv2 does not differentiate between "set-[ac]time-to-now"
67 * which only requires access, and "set-[ac]time-to-X" which
69 * So if it looks like it might be "set both to the same time which
70 * is close to now", and if setattr_prepare fails, then we
71 * convert to "set to now" instead of "set to explicit time"
73 * We only call setattr_prepare as the last test as technically
74 * it is not an interface that we should be using.
76 #define BOTH_TIME_SET (ATTR_ATIME_SET | ATTR_MTIME_SET)
77 #define MAX_TOUCH_TIME_ERROR (30*60)
78 if ((iap->ia_valid & BOTH_TIME_SET) == BOTH_TIME_SET &&
79 iap->ia_mtime.tv_sec == iap->ia_atime.tv_sec) {
83 * Now just make sure time is in the right ballpark.
84 * Solaris, at least, doesn't seem to care what the time
85 * request is. We require it be within 30 minutes of now.
87 time64_t delta = iap->ia_atime.tv_sec - ktime_get_real_seconds();
89 resp->status = fh_verify(rqstp, fhp, 0, NFSD_MAY_NOP);
90 if (resp->status != nfs_ok)
95 if (delta < MAX_TOUCH_TIME_ERROR &&
96 setattr_prepare(&init_user_ns, fhp->fh_dentry, iap) != 0) {
98 * Turn off ATTR_[AM]TIME_SET but leave ATTR_[AM]TIME.
99 * This will cause notify_change to set these times
102 iap->ia_valid &= ~BOTH_TIME_SET;
106 resp->status = nfsd_setattr(rqstp, fhp, &attrs, 0, (time64_t)0);
107 if (resp->status != nfs_ok)
110 resp->status = fh_getattr(&resp->fh, &resp->stat);
115 /* Obsolete, replaced by MNTPROC_MNT. */
117 nfsd_proc_root(struct svc_rqst *rqstp)
123 * Look up a path name component
124 * Note: the dentry in the resp->fh may be negative if the file
126 * N.B. After this call resp->fh needs an fh_put
129 nfsd_proc_lookup(struct svc_rqst *rqstp)
131 struct nfsd_diropargs *argp = rqstp->rq_argp;
132 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 resp->status = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len,
141 if (resp->status != nfs_ok)
144 resp->status = fh_getattr(&resp->fh, &resp->stat);
153 nfsd_proc_readlink(struct svc_rqst *rqstp)
155 struct nfsd_fhandle *argp = rqstp->rq_argp;
156 struct nfsd_readlinkres *resp = rqstp->rq_resp;
158 dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
160 /* Read the symlink. */
161 resp->len = NFS_MAXPATHLEN;
162 resp->page = *(rqstp->rq_next_page++);
163 resp->status = nfsd_readlink(rqstp, &argp->fh,
164 page_address(resp->page), &resp->len);
171 * Read a portion of a file.
172 * N.B. After this call resp->fh needs an fh_put
175 nfsd_proc_read(struct svc_rqst *rqstp)
177 struct nfsd_readargs *argp = rqstp->rq_argp;
178 struct nfsd_readres *resp = rqstp->rq_resp;
183 dprintk("nfsd: READ %s %d bytes at %d\n",
184 SVCFH_fmt(&argp->fh),
185 argp->count, argp->offset);
187 argp->count = min_t(u32, argp->count, NFSSVC_MAXBLKSIZE_V2);
191 resp->pages = rqstp->rq_next_page;
193 struct page *page = *(rqstp->rq_next_page++);
195 rqstp->rq_vec[v].iov_base = page_address(page);
196 rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
197 len -= rqstp->rq_vec[v].iov_len;
201 /* Obtain buffer pointer for payload. 19 is 1 word for
202 * status, 17 words for fattr, and 1 word for the byte count.
204 svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
206 resp->count = argp->count;
207 fh_copy(&resp->fh, &argp->fh);
208 resp->status = nfsd_read(rqstp, &resp->fh, argp->offset,
209 rqstp->rq_vec, v, &resp->count, &eof);
210 if (resp->status == nfs_ok)
211 resp->status = fh_getattr(&resp->fh, &resp->stat);
212 else if (resp->status == nfserr_jukebox)
213 return rpc_drop_reply;
219 nfsd_proc_writecache(struct svc_rqst *rqstp)
225 * Write data to a file
226 * N.B. After this call resp->fh needs an fh_put
229 nfsd_proc_write(struct svc_rqst *rqstp)
231 struct nfsd_writeargs *argp = rqstp->rq_argp;
232 struct nfsd_attrstat *resp = rqstp->rq_resp;
233 unsigned long cnt = argp->len;
236 dprintk("nfsd: WRITE %s %u bytes at %d\n",
237 SVCFH_fmt(&argp->fh),
238 argp->len, argp->offset);
240 nvecs = svc_fill_write_vector(rqstp, &argp->payload);
242 resp->status = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh),
243 argp->offset, rqstp->rq_vec, nvecs,
244 &cnt, NFS_DATA_SYNC, NULL);
245 if (resp->status == nfs_ok)
246 resp->status = fh_getattr(&resp->fh, &resp->stat);
247 else if (resp->status == nfserr_jukebox)
248 return rpc_drop_reply;
253 * CREATE processing is complicated. The keyword here is `overloaded.'
254 * The parent directory is kept locked between the check for existence
255 * and the actual create() call in compliance with VFS protocols.
256 * N.B. After this call _both_ argp->fh and resp->fh need an fh_put
259 nfsd_proc_create(struct svc_rqst *rqstp)
261 struct nfsd_createargs *argp = rqstp->rq_argp;
262 struct nfsd_diropres *resp = rqstp->rq_resp;
263 svc_fh *dirfhp = &argp->fh;
264 svc_fh *newfhp = &resp->fh;
265 struct iattr *attr = &argp->attrs;
266 struct nfsd_attrs attrs = {
270 struct dentry *dchild;
273 dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size);
275 dprintk("nfsd: CREATE %s %.*s\n",
276 SVCFH_fmt(dirfhp), argp->len, argp->name);
278 /* First verify the parent file handle */
279 resp->status = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
280 if (resp->status != nfs_ok)
281 goto done; /* must fh_put dirfhp even on error */
283 /* Check for NFSD_MAY_WRITE in nfsd_create if necessary */
285 resp->status = nfserr_exist;
286 if (isdotent(argp->name, argp->len))
288 hosterr = fh_want_write(dirfhp);
290 resp->status = nfserrno(hosterr);
294 inode_lock_nested(dirfhp->fh_dentry->d_inode, I_MUTEX_PARENT);
295 dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len);
296 if (IS_ERR(dchild)) {
297 resp->status = nfserrno(PTR_ERR(dchild));
300 fh_init(newfhp, NFS_FHSIZE);
301 resp->status = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
302 if (!resp->status && d_really_is_negative(dchild))
303 resp->status = nfserr_noent;
306 if (resp->status != nfserr_noent)
309 * If the new file handle wasn't verified, we can't tell
310 * whether the file exists or not. Time to bail ...
312 resp->status = nfserr_acces;
313 if (!newfhp->fh_dentry) {
315 "nfsd_proc_create: file handle not verified\n");
320 inode = d_inode(newfhp->fh_dentry);
322 /* Unfudge the mode bits */
323 if (attr->ia_valid & ATTR_MODE) {
324 type = attr->ia_mode & S_IFMT;
325 mode = attr->ia_mode & ~S_IFMT;
327 /* no type, so if target exists, assume same as that,
328 * else assume a file */
330 type = inode->i_mode & S_IFMT;
334 /* reserve rdev for later checking */
335 rdev = inode->i_rdev;
336 attr->ia_valid |= ATTR_SIZE;
340 /* this is probably a permission check..
341 * at least IRIX implements perm checking on
342 * echo thing > device-special-file-or-pipe
343 * by doing a CREATE with type==0
345 resp->status = nfsd_permission(rqstp,
348 NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS);
349 if (resp->status && resp->status != nfserr_rofs)
356 type = inode->i_mode & S_IFMT;
357 mode = inode->i_mode & ~S_IFMT;
363 attr->ia_valid |= ATTR_MODE;
364 attr->ia_mode = mode;
366 /* Special treatment for non-regular files according to the
367 * gospel of sun micro
369 if (type != S_IFREG) {
370 if (type != S_IFBLK && type != S_IFCHR) {
372 } else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) {
373 /* If you think you've seen the worst, grok this. */
376 /* Okay, char or block special */
381 /* we've used the SIZE information, so discard it */
382 attr->ia_valid &= ~ATTR_SIZE;
384 /* Make sure the type and device matches */
385 resp->status = nfserr_exist;
386 if (inode && inode_wrong_type(inode, type))
390 resp->status = nfs_ok;
392 /* File doesn't exist. Create it and set attrs */
393 resp->status = nfsd_create_locked(rqstp, dirfhp, argp->name,
394 argp->len, &attrs, type, rdev,
396 } else if (type == S_IFREG) {
397 dprintk("nfsd: existing %s, valid=%x, size=%ld\n",
398 argp->name, attr->ia_valid, (long) attr->ia_size);
399 /* File already exists. We ignore all attributes except
400 * size, so that creat() behaves exactly like
401 * open(..., O_CREAT|O_TRUNC|O_WRONLY).
403 attr->ia_valid &= ATTR_SIZE;
405 resp->status = nfsd_setattr(rqstp, newfhp, &attrs, 0,
410 inode_unlock(dirfhp->fh_dentry->d_inode);
411 fh_drop_write(dirfhp);
414 if (resp->status != nfs_ok)
416 resp->status = fh_getattr(&resp->fh, &resp->stat);
422 nfsd_proc_remove(struct svc_rqst *rqstp)
424 struct nfsd_diropargs *argp = rqstp->rq_argp;
425 struct nfsd_stat *resp = rqstp->rq_resp;
427 dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh),
428 argp->len, argp->name);
430 /* Unlink. -SIFDIR means file must not be a directory */
431 resp->status = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR,
432 argp->name, argp->len);
438 nfsd_proc_rename(struct svc_rqst *rqstp)
440 struct nfsd_renameargs *argp = rqstp->rq_argp;
441 struct nfsd_stat *resp = rqstp->rq_resp;
443 dprintk("nfsd: RENAME %s %.*s -> \n",
444 SVCFH_fmt(&argp->ffh), argp->flen, argp->fname);
445 dprintk("nfsd: -> %s %.*s\n",
446 SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname);
448 resp->status = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen,
449 &argp->tfh, argp->tname, argp->tlen);
456 nfsd_proc_link(struct svc_rqst *rqstp)
458 struct nfsd_linkargs *argp = rqstp->rq_argp;
459 struct nfsd_stat *resp = rqstp->rq_resp;
461 dprintk("nfsd: LINK %s ->\n",
462 SVCFH_fmt(&argp->ffh));
463 dprintk("nfsd: %s %.*s\n",
464 SVCFH_fmt(&argp->tfh),
468 resp->status = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen,
476 nfsd_proc_symlink(struct svc_rqst *rqstp)
478 struct nfsd_symlinkargs *argp = rqstp->rq_argp;
479 struct nfsd_stat *resp = rqstp->rq_resp;
480 struct nfsd_attrs attrs = {
481 .na_iattr = &argp->attrs,
485 if (argp->tlen > NFS_MAXPATHLEN) {
486 resp->status = nfserr_nametoolong;
490 argp->tname = svc_fill_symlink_pathname(rqstp, &argp->first,
491 page_address(rqstp->rq_arg.pages[0]),
493 if (IS_ERR(argp->tname)) {
494 resp->status = nfserrno(PTR_ERR(argp->tname));
498 dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n",
499 SVCFH_fmt(&argp->ffh), argp->flen, argp->fname,
500 argp->tlen, argp->tname);
502 fh_init(&newfh, NFS_FHSIZE);
503 resp->status = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen,
504 argp->tname, &attrs, &newfh);
514 * Make directory. This operation is not idempotent.
515 * N.B. After this call resp->fh needs an fh_put
518 nfsd_proc_mkdir(struct svc_rqst *rqstp)
520 struct nfsd_createargs *argp = rqstp->rq_argp;
521 struct nfsd_diropres *resp = rqstp->rq_resp;
522 struct nfsd_attrs attrs = {
523 .na_iattr = &argp->attrs,
526 dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
528 if (resp->fh.fh_dentry) {
530 "nfsd_proc_mkdir: response already verified??\n");
533 argp->attrs.ia_valid &= ~ATTR_SIZE;
534 fh_init(&resp->fh, NFS_FHSIZE);
535 resp->status = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
536 &attrs, S_IFDIR, 0, &resp->fh);
538 if (resp->status != nfs_ok)
541 resp->status = fh_getattr(&resp->fh, &resp->stat);
550 nfsd_proc_rmdir(struct svc_rqst *rqstp)
552 struct nfsd_diropargs *argp = rqstp->rq_argp;
553 struct nfsd_stat *resp = rqstp->rq_resp;
555 dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
557 resp->status = nfsd_unlink(rqstp, &argp->fh, S_IFDIR,
558 argp->name, argp->len);
563 static void nfsd_init_dirlist_pages(struct svc_rqst *rqstp,
564 struct nfsd_readdirres *resp,
567 struct xdr_buf *buf = &resp->dirlist;
568 struct xdr_stream *xdr = &resp->xdr;
570 count = clamp(count, (u32)(XDR_UNIT * 2), svc_max_payload(rqstp));
572 memset(buf, 0, sizeof(*buf));
574 /* Reserve room for the NULL ptr & eof flag (-2 words) */
575 buf->buflen = count - XDR_UNIT * 2;
576 buf->pages = rqstp->rq_next_page;
577 rqstp->rq_next_page++;
579 /* This is xdr_init_encode(), but it assumes that
580 * the head kvec has already been consumed. */
581 xdr_set_scratch_buffer(xdr, NULL, 0);
583 xdr->page_ptr = buf->pages;
585 xdr->p = page_address(*buf->pages);
586 xdr->end = (void *)xdr->p + min_t(u32, buf->buflen, PAGE_SIZE);
591 * Read a portion of a directory.
594 nfsd_proc_readdir(struct svc_rqst *rqstp)
596 struct nfsd_readdirargs *argp = rqstp->rq_argp;
597 struct nfsd_readdirres *resp = rqstp->rq_resp;
600 dprintk("nfsd: READDIR %s %d bytes at %d\n",
601 SVCFH_fmt(&argp->fh),
602 argp->count, argp->cookie);
604 nfsd_init_dirlist_pages(rqstp, resp, argp->count);
606 resp->common.err = nfs_ok;
607 resp->cookie_offset = 0;
608 offset = argp->cookie;
609 resp->status = nfsd_readdir(rqstp, &argp->fh, &offset,
610 &resp->common, nfssvc_encode_entry);
611 nfssvc_encode_nfscookie(resp, offset);
618 * Get file system info
621 nfsd_proc_statfs(struct svc_rqst *rqstp)
623 struct nfsd_fhandle *argp = rqstp->rq_argp;
624 struct nfsd_statfsres *resp = rqstp->rq_resp;
626 dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh));
628 resp->status = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
629 NFSD_MAY_BYPASS_GSS_ON_ROOT);
635 * NFSv2 Server procedures.
636 * Only the results of non-idempotent operations are cached.
639 #define ST 1 /* status */
640 #define FH 8 /* filehandle */
641 #define AT 18 /* attributes */
643 static const struct svc_procedure nfsd_procedures2[18] = {
645 .pc_func = nfsd_proc_null,
646 .pc_decode = nfssvc_decode_voidarg,
647 .pc_encode = nfssvc_encode_voidres,
648 .pc_argsize = sizeof(struct nfsd_voidargs),
649 .pc_ressize = sizeof(struct nfsd_voidres),
650 .pc_cachetype = RC_NOCACHE,
654 [NFSPROC_GETATTR] = {
655 .pc_func = nfsd_proc_getattr,
656 .pc_decode = nfssvc_decode_fhandleargs,
657 .pc_encode = nfssvc_encode_attrstatres,
658 .pc_release = nfssvc_release_attrstat,
659 .pc_argsize = sizeof(struct nfsd_fhandle),
660 .pc_ressize = sizeof(struct nfsd_attrstat),
661 .pc_cachetype = RC_NOCACHE,
662 .pc_xdrressize = ST+AT,
663 .pc_name = "GETATTR",
665 [NFSPROC_SETATTR] = {
666 .pc_func = nfsd_proc_setattr,
667 .pc_decode = nfssvc_decode_sattrargs,
668 .pc_encode = nfssvc_encode_attrstatres,
669 .pc_release = nfssvc_release_attrstat,
670 .pc_argsize = sizeof(struct nfsd_sattrargs),
671 .pc_ressize = sizeof(struct nfsd_attrstat),
672 .pc_cachetype = RC_REPLBUFF,
673 .pc_xdrressize = ST+AT,
674 .pc_name = "SETATTR",
677 .pc_func = nfsd_proc_root,
678 .pc_decode = nfssvc_decode_voidarg,
679 .pc_encode = nfssvc_encode_voidres,
680 .pc_argsize = sizeof(struct nfsd_voidargs),
681 .pc_ressize = sizeof(struct nfsd_voidres),
682 .pc_cachetype = RC_NOCACHE,
687 .pc_func = nfsd_proc_lookup,
688 .pc_decode = nfssvc_decode_diropargs,
689 .pc_encode = nfssvc_encode_diropres,
690 .pc_release = nfssvc_release_diropres,
691 .pc_argsize = sizeof(struct nfsd_diropargs),
692 .pc_ressize = sizeof(struct nfsd_diropres),
693 .pc_cachetype = RC_NOCACHE,
694 .pc_xdrressize = ST+FH+AT,
697 [NFSPROC_READLINK] = {
698 .pc_func = nfsd_proc_readlink,
699 .pc_decode = nfssvc_decode_fhandleargs,
700 .pc_encode = nfssvc_encode_readlinkres,
701 .pc_argsize = sizeof(struct nfsd_fhandle),
702 .pc_ressize = sizeof(struct nfsd_readlinkres),
703 .pc_cachetype = RC_NOCACHE,
704 .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
705 .pc_name = "READLINK",
708 .pc_func = nfsd_proc_read,
709 .pc_decode = nfssvc_decode_readargs,
710 .pc_encode = nfssvc_encode_readres,
711 .pc_release = nfssvc_release_readres,
712 .pc_argsize = sizeof(struct nfsd_readargs),
713 .pc_ressize = sizeof(struct nfsd_readres),
714 .pc_cachetype = RC_NOCACHE,
715 .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
718 [NFSPROC_WRITECACHE] = {
719 .pc_func = nfsd_proc_writecache,
720 .pc_decode = nfssvc_decode_voidarg,
721 .pc_encode = nfssvc_encode_voidres,
722 .pc_argsize = sizeof(struct nfsd_voidargs),
723 .pc_ressize = sizeof(struct nfsd_voidres),
724 .pc_cachetype = RC_NOCACHE,
726 .pc_name = "WRITECACHE",
729 .pc_func = nfsd_proc_write,
730 .pc_decode = nfssvc_decode_writeargs,
731 .pc_encode = nfssvc_encode_attrstatres,
732 .pc_release = nfssvc_release_attrstat,
733 .pc_argsize = sizeof(struct nfsd_writeargs),
734 .pc_ressize = sizeof(struct nfsd_attrstat),
735 .pc_cachetype = RC_REPLBUFF,
736 .pc_xdrressize = ST+AT,
740 .pc_func = nfsd_proc_create,
741 .pc_decode = nfssvc_decode_createargs,
742 .pc_encode = nfssvc_encode_diropres,
743 .pc_release = nfssvc_release_diropres,
744 .pc_argsize = sizeof(struct nfsd_createargs),
745 .pc_ressize = sizeof(struct nfsd_diropres),
746 .pc_cachetype = RC_REPLBUFF,
747 .pc_xdrressize = ST+FH+AT,
751 .pc_func = nfsd_proc_remove,
752 .pc_decode = nfssvc_decode_diropargs,
753 .pc_encode = nfssvc_encode_statres,
754 .pc_argsize = sizeof(struct nfsd_diropargs),
755 .pc_ressize = sizeof(struct nfsd_stat),
756 .pc_cachetype = RC_REPLSTAT,
761 .pc_func = nfsd_proc_rename,
762 .pc_decode = nfssvc_decode_renameargs,
763 .pc_encode = nfssvc_encode_statres,
764 .pc_argsize = sizeof(struct nfsd_renameargs),
765 .pc_ressize = sizeof(struct nfsd_stat),
766 .pc_cachetype = RC_REPLSTAT,
771 .pc_func = nfsd_proc_link,
772 .pc_decode = nfssvc_decode_linkargs,
773 .pc_encode = nfssvc_encode_statres,
774 .pc_argsize = sizeof(struct nfsd_linkargs),
775 .pc_ressize = sizeof(struct nfsd_stat),
776 .pc_cachetype = RC_REPLSTAT,
780 [NFSPROC_SYMLINK] = {
781 .pc_func = nfsd_proc_symlink,
782 .pc_decode = nfssvc_decode_symlinkargs,
783 .pc_encode = nfssvc_encode_statres,
784 .pc_argsize = sizeof(struct nfsd_symlinkargs),
785 .pc_ressize = sizeof(struct nfsd_stat),
786 .pc_cachetype = RC_REPLSTAT,
788 .pc_name = "SYMLINK",
791 .pc_func = nfsd_proc_mkdir,
792 .pc_decode = nfssvc_decode_createargs,
793 .pc_encode = nfssvc_encode_diropres,
794 .pc_release = nfssvc_release_diropres,
795 .pc_argsize = sizeof(struct nfsd_createargs),
796 .pc_ressize = sizeof(struct nfsd_diropres),
797 .pc_cachetype = RC_REPLBUFF,
798 .pc_xdrressize = ST+FH+AT,
802 .pc_func = nfsd_proc_rmdir,
803 .pc_decode = nfssvc_decode_diropargs,
804 .pc_encode = nfssvc_encode_statres,
805 .pc_argsize = sizeof(struct nfsd_diropargs),
806 .pc_ressize = sizeof(struct nfsd_stat),
807 .pc_cachetype = RC_REPLSTAT,
811 [NFSPROC_READDIR] = {
812 .pc_func = nfsd_proc_readdir,
813 .pc_decode = nfssvc_decode_readdirargs,
814 .pc_encode = nfssvc_encode_readdirres,
815 .pc_argsize = sizeof(struct nfsd_readdirargs),
816 .pc_ressize = sizeof(struct nfsd_readdirres),
817 .pc_cachetype = RC_NOCACHE,
818 .pc_name = "READDIR",
821 .pc_func = nfsd_proc_statfs,
822 .pc_decode = nfssvc_decode_fhandleargs,
823 .pc_encode = nfssvc_encode_statfsres,
824 .pc_argsize = sizeof(struct nfsd_fhandle),
825 .pc_ressize = sizeof(struct nfsd_statfsres),
826 .pc_cachetype = RC_NOCACHE,
827 .pc_xdrressize = ST+5,
833 static unsigned int nfsd_count2[ARRAY_SIZE(nfsd_procedures2)];
834 const struct svc_version nfsd_version2 = {
837 .vs_proc = nfsd_procedures2,
838 .vs_count = nfsd_count2,
839 .vs_dispatch = nfsd_dispatch,
840 .vs_xdrsize = NFS2_SVC_XDRSIZE,
844 * Map errnos to NFS errnos.
854 { nfserr_perm, -EPERM },
855 { nfserr_noent, -ENOENT },
857 { nfserr_nxio, -ENXIO },
858 { nfserr_fbig, -E2BIG },
859 { nfserr_stale, -EBADF },
860 { nfserr_acces, -EACCES },
861 { nfserr_exist, -EEXIST },
862 { nfserr_xdev, -EXDEV },
863 { nfserr_mlink, -EMLINK },
864 { nfserr_nodev, -ENODEV },
865 { nfserr_notdir, -ENOTDIR },
866 { nfserr_isdir, -EISDIR },
867 { nfserr_inval, -EINVAL },
868 { nfserr_fbig, -EFBIG },
869 { nfserr_nospc, -ENOSPC },
870 { nfserr_rofs, -EROFS },
871 { nfserr_mlink, -EMLINK },
872 { nfserr_nametoolong, -ENAMETOOLONG },
873 { nfserr_notempty, -ENOTEMPTY },
875 { nfserr_dquot, -EDQUOT },
877 { nfserr_stale, -ESTALE },
878 { nfserr_jukebox, -ETIMEDOUT },
879 { nfserr_jukebox, -ERESTARTSYS },
880 { nfserr_jukebox, -EAGAIN },
881 { nfserr_jukebox, -EWOULDBLOCK },
882 { nfserr_jukebox, -ENOMEM },
883 { nfserr_io, -ETXTBSY },
884 { nfserr_notsupp, -EOPNOTSUPP },
885 { nfserr_toosmall, -ETOOSMALL },
886 { nfserr_serverfault, -ESERVERFAULT },
887 { nfserr_serverfault, -ENFILE },
888 { nfserr_io, -EREMOTEIO },
889 { nfserr_stale, -EOPENSTALE },
890 { nfserr_io, -EUCLEAN },
891 { nfserr_perm, -ENOKEY },
892 { nfserr_no_grace, -ENOGRACE},
896 for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) {
897 if (nfs_errtbl[i].syserr == errno)
898 return nfs_errtbl[i].nfserr;
900 WARN_ONCE(1, "nfsd: non-standard errno: %d\n", errno);