2 * linux/fs/nfs/nfs2xdr.c
4 * XDR functions to encode/decode NFS RPC arguments and results.
6 * Copyright (C) 1992, 1993, 1994 Rick Sladkey
7 * Copyright (C) 1996 Olaf Kirch
8 * 04 Aug 1998 Ion Badulescu <ionut@cs.columbia.edu>
9 * FIFO's need special handling in NFSv2
12 #include <linux/param.h>
13 #include <linux/time.h>
15 #include <linux/errno.h>
16 #include <linux/string.h>
18 #include <linux/pagemap.h>
19 #include <linux/proc_fs.h>
20 #include <linux/sunrpc/clnt.h>
21 #include <linux/nfs.h>
22 #include <linux/nfs2.h>
23 #include <linux/nfs_fs.h>
26 #define NFSDBG_FACILITY NFSDBG_XDR
28 /* Mapping from NFS error code to "errno" error code. */
29 #define errno_NFSERR_IO EIO
32 * Declare the space requirements for NFS arguments and replies as
33 * number of 32bit-words
35 #define NFS_fhandle_sz (8)
36 #define NFS_sattr_sz (8)
37 #define NFS_filename_sz (1+(NFS2_MAXNAMLEN>>2))
38 #define NFS_path_sz (1+(NFS2_MAXPATHLEN>>2))
39 #define NFS_fattr_sz (17)
40 #define NFS_info_sz (5)
41 #define NFS_entry_sz (NFS_filename_sz+3)
43 #define NFS_diropargs_sz (NFS_fhandle_sz+NFS_filename_sz)
44 #define NFS_removeargs_sz (NFS_fhandle_sz+NFS_filename_sz)
45 #define NFS_sattrargs_sz (NFS_fhandle_sz+NFS_sattr_sz)
46 #define NFS_readlinkargs_sz (NFS_fhandle_sz)
47 #define NFS_readargs_sz (NFS_fhandle_sz+3)
48 #define NFS_writeargs_sz (NFS_fhandle_sz+4)
49 #define NFS_createargs_sz (NFS_diropargs_sz+NFS_sattr_sz)
50 #define NFS_renameargs_sz (NFS_diropargs_sz+NFS_diropargs_sz)
51 #define NFS_linkargs_sz (NFS_fhandle_sz+NFS_diropargs_sz)
52 #define NFS_symlinkargs_sz (NFS_diropargs_sz+1+NFS_sattr_sz)
53 #define NFS_readdirargs_sz (NFS_fhandle_sz+2)
55 #define NFS_attrstat_sz (1+NFS_fattr_sz)
56 #define NFS_diropres_sz (1+NFS_fhandle_sz+NFS_fattr_sz)
57 #define NFS_readlinkres_sz (2)
58 #define NFS_readres_sz (1+NFS_fattr_sz+1)
59 #define NFS_writeres_sz (NFS_attrstat_sz)
60 #define NFS_stat_sz (1)
61 #define NFS_readdirres_sz (1)
62 #define NFS_statfsres_sz (1+NFS_info_sz)
66 * While encoding arguments, set up the reply buffer in advance to
67 * receive reply data directly into the page cache.
69 static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
70 unsigned int base, unsigned int len,
73 struct rpc_auth *auth = req->rq_cred->cr_auth;
76 replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize;
77 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
82 * Common NFS XDR functions as inlines
84 static inline __be32 *
85 xdr_decode_fhandle(__be32 *p, struct nfs_fh *fhandle)
87 /* NFSv2 handles have a fixed length */
88 fhandle->size = NFS2_FHSIZE;
89 memcpy(fhandle->data, p, NFS2_FHSIZE);
90 return p + XDR_QUADLEN(NFS2_FHSIZE);
94 xdr_encode_time(__be32 *p, const struct timespec *timep)
96 *p++ = htonl(timep->tv_sec);
97 /* Convert nanoseconds into microseconds */
98 *p++ = htonl(timep->tv_nsec ? timep->tv_nsec / 1000 : 0);
102 static inline __be32*
103 xdr_encode_current_server_time(__be32 *p, const struct timespec *timep)
106 * Passing the invalid value useconds=1000000 is a
107 * Sun convention for "set to current server time".
108 * It's needed to make permissions checks for the
109 * "touch" program across v2 mounts to Solaris and
110 * Irix boxes work correctly. See description of
111 * sattr in section 6.1 of "NFS Illustrated" by
112 * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
114 *p++ = htonl(timep->tv_sec);
115 *p++ = htonl(1000000);
119 static inline __be32*
120 xdr_decode_time(__be32 *p, struct timespec *timep)
122 timep->tv_sec = ntohl(*p++);
123 /* Convert microseconds into nanoseconds */
124 timep->tv_nsec = ntohl(*p++) * 1000;
129 xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
133 fattr->mode = ntohl(*p++);
134 fattr->nlink = ntohl(*p++);
135 fattr->uid = ntohl(*p++);
136 fattr->gid = ntohl(*p++);
137 fattr->size = ntohl(*p++);
138 fattr->du.nfs2.blocksize = ntohl(*p++);
140 fattr->du.nfs2.blocks = ntohl(*p++);
141 fattr->fsid.major = ntohl(*p++);
142 fattr->fsid.minor = 0;
143 fattr->fileid = ntohl(*p++);
144 p = xdr_decode_time(p, &fattr->atime);
145 p = xdr_decode_time(p, &fattr->mtime);
146 p = xdr_decode_time(p, &fattr->ctime);
147 fattr->valid |= NFS_ATTR_FATTR_V2;
148 fattr->rdev = new_decode_dev(rdev);
149 if (type == NFCHR && rdev == NFS2_FIFO_DEV) {
150 fattr->mode = (fattr->mode & ~S_IFMT) | S_IFIFO;
157 * Encode/decode NFSv2 basic data types
159 * Basic NFSv2 data types are defined in section 2.3 of RFC 1094:
160 * "NFS: Network File System Protocol Specification".
162 * Not all basic data types have their own encoding and decoding
163 * functions. For run-time efficiency, some data types are encoded
170 * typedef opaque fhandle[FHSIZE];
172 static void encode_fhandle(struct xdr_stream *xdr, const struct nfs_fh *fh)
176 BUG_ON(fh->size != NFS2_FHSIZE);
177 p = xdr_reserve_space(xdr, NFS2_FHSIZE);
178 memcpy(p, fh->data, NFS2_FHSIZE);
194 #define NFS2_SATTR_NOT_SET (0xffffffff)
196 static __be32 *xdr_time_not_set(__be32 *p)
198 *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
199 *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
203 static void encode_sattr(struct xdr_stream *xdr, const struct iattr *attr)
207 p = xdr_reserve_space(xdr, NFS_sattr_sz << 2);
209 if (attr->ia_valid & ATTR_MODE)
210 *p++ = cpu_to_be32(attr->ia_mode);
212 *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
213 if (attr->ia_valid & ATTR_UID)
214 *p++ = cpu_to_be32(attr->ia_uid);
216 *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
217 if (attr->ia_valid & ATTR_GID)
218 *p++ = cpu_to_be32(attr->ia_gid);
220 *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
221 if (attr->ia_valid & ATTR_SIZE)
222 *p++ = cpu_to_be32((u32)attr->ia_size);
224 *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
226 if (attr->ia_valid & ATTR_ATIME_SET)
227 p = xdr_encode_time(p, &attr->ia_atime);
228 else if (attr->ia_valid & ATTR_ATIME)
229 p = xdr_encode_current_server_time(p, &attr->ia_atime);
231 p = xdr_time_not_set(p);
232 if (attr->ia_valid & ATTR_MTIME_SET)
233 xdr_encode_time(p, &attr->ia_mtime);
234 else if (attr->ia_valid & ATTR_MTIME)
235 xdr_encode_current_server_time(p, &attr->ia_mtime);
243 * typedef string filename<MAXNAMLEN>;
245 static void encode_filename(struct xdr_stream *xdr,
246 const char *name, u32 length)
250 BUG_ON(length > NFS2_MAXNAMLEN);
251 p = xdr_reserve_space(xdr, 4 + length);
252 xdr_encode_opaque(p, name, length);
258 * typedef string path<MAXPATHLEN>;
260 static void encode_path(struct xdr_stream *xdr, struct page **pages, u32 length)
264 BUG_ON(length > NFS2_MAXPATHLEN);
265 p = xdr_reserve_space(xdr, 4);
266 *p = cpu_to_be32(length);
267 xdr_write_pages(xdr, pages, 0, length);
278 static void encode_diropargs(struct xdr_stream *xdr, const struct nfs_fh *fh,
279 const char *name, u32 length)
281 encode_fhandle(xdr, fh);
282 encode_filename(xdr, name, length);
287 * NFSv2 XDR encode functions
289 * NFSv2 argument types are defined in section 2.2 of RFC 1094:
290 * "NFS: Network File System Protocol Specification".
293 static int nfs2_xdr_enc_fhandle(struct rpc_rqst *req, __be32 *p,
294 const struct nfs_fh *fh)
296 struct xdr_stream xdr;
298 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
299 encode_fhandle(&xdr, fh);
311 static int nfs2_xdr_enc_sattrargs(struct rpc_rqst *req, __be32 *p,
312 const struct nfs_sattrargs *args)
314 struct xdr_stream xdr;
316 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
317 encode_fhandle(&xdr, args->fh);
318 encode_sattr(&xdr, args->sattr);
322 static int nfs2_xdr_enc_diropargs(struct rpc_rqst *req, __be32 *p,
323 const struct nfs_diropargs *args)
325 struct xdr_stream xdr;
327 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
328 encode_diropargs(&xdr, args->fh, args->name, args->len);
332 static int nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req, __be32 *p,
333 const struct nfs_readlinkargs *args)
335 struct xdr_stream xdr;
337 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
338 encode_fhandle(&xdr, args->fh);
339 prepare_reply_buffer(req, args->pages, args->pgbase,
340 args->pglen, NFS_readlinkres_sz);
351 * unsigned totalcount;
354 static void encode_readargs(struct xdr_stream *xdr,
355 const struct nfs_readargs *args)
357 u32 offset = args->offset;
358 u32 count = args->count;
361 encode_fhandle(xdr, args->fh);
363 p = xdr_reserve_space(xdr, 4 + 4 + 4);
364 *p++ = cpu_to_be32(offset);
365 *p++ = cpu_to_be32(count);
366 *p = cpu_to_be32(count);
369 static int nfs2_xdr_enc_readargs(struct rpc_rqst *req, __be32 *p,
370 const struct nfs_readargs *args)
372 struct xdr_stream xdr;
374 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
375 encode_readargs(&xdr, args);
376 prepare_reply_buffer(req, args->pages, args->pgbase,
377 args->count, NFS_readres_sz);
378 req->rq_rcv_buf.flags |= XDRBUF_READ;
386 nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
388 struct kvec *iov = req->rq_rcv_buf.head;
393 if ((status = ntohl(*p++)))
394 return nfs_stat_to_errno(status);
395 p = xdr_decode_fattr(p, res->fattr);
399 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
400 if (iov->iov_len < hdrlen) {
401 dprintk("NFS: READ reply header overflowed:"
402 "length %Zu > %Zu\n", hdrlen, iov->iov_len);
403 return -errno_NFSERR_IO;
404 } else if (iov->iov_len != hdrlen) {
405 dprintk("NFS: READ header is short. iovec will be shifted.\n");
406 xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen);
409 recvd = req->rq_rcv_buf.len - hdrlen;
411 dprintk("NFS: server cheating in read reply: "
412 "count %u > recvd %u\n", count, recvd);
416 dprintk("RPC: readres OK count %u\n", count);
417 if (count < res->count)
429 * unsigned beginoffset;
431 * unsigned totalcount;
435 static void encode_writeargs(struct xdr_stream *xdr,
436 const struct nfs_writeargs *args)
438 u32 offset = args->offset;
439 u32 count = args->count;
442 encode_fhandle(xdr, args->fh);
444 p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4);
445 *p++ = cpu_to_be32(offset);
446 *p++ = cpu_to_be32(offset);
447 *p++ = cpu_to_be32(count);
450 *p = cpu_to_be32(count);
451 xdr_write_pages(xdr, args->pages, args->pgbase, count);
454 static int nfs2_xdr_enc_writeargs(struct rpc_rqst *req, __be32 *p,
455 const struct nfs_writeargs *args)
457 struct xdr_stream xdr;
459 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
460 encode_writeargs(&xdr, args);
461 xdr.buf->flags |= XDRBUF_WRITE;
468 * struct createargs {
473 static int nfs2_xdr_enc_createargs(struct rpc_rqst *req, __be32 *p,
474 const struct nfs_createargs *args)
476 struct xdr_stream xdr;
478 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
479 encode_diropargs(&xdr, args->fh, args->name, args->len);
480 encode_sattr(&xdr, args->sattr);
484 static int nfs2_xdr_enc_removeargs(struct rpc_rqst *req, __be32 *p,
485 const struct nfs_removeargs *args)
487 struct xdr_stream xdr;
489 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
490 encode_diropargs(&xdr, args->fh, args->name.name, args->name.len);
497 * struct renameargs {
502 static int nfs2_xdr_enc_renameargs(struct rpc_rqst *req, __be32 *p,
503 const struct nfs_renameargs *args)
505 const struct qstr *old = args->old_name;
506 const struct qstr *new = args->new_name;
507 struct xdr_stream xdr;
509 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
510 encode_diropargs(&xdr, args->old_dir, old->name, old->len);
511 encode_diropargs(&xdr, args->new_dir, new->name, new->len);
523 static int nfs2_xdr_enc_linkargs(struct rpc_rqst *req, __be32 *p,
524 const struct nfs_linkargs *args)
526 struct xdr_stream xdr;
528 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
529 encode_fhandle(&xdr, args->fromfh);
530 encode_diropargs(&xdr, args->tofh, args->toname, args->tolen);
535 * 2.2.14. symlinkargs
537 * struct symlinkargs {
543 static int nfs2_xdr_enc_symlinkargs(struct rpc_rqst *req, __be32 *p,
544 const struct nfs_symlinkargs *args)
546 struct xdr_stream xdr;
548 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
549 encode_diropargs(&xdr, args->fromfh, args->fromname, args->fromlen);
550 encode_path(&xdr, args->pages, args->pathlen);
551 encode_sattr(&xdr, args->sattr);
556 * 2.2.17. readdirargs
558 * struct readdirargs {
564 static void encode_readdirargs(struct xdr_stream *xdr,
565 const struct nfs_readdirargs *args)
569 encode_fhandle(xdr, args->fh);
571 p = xdr_reserve_space(xdr, 4 + 4);
572 *p++ = cpu_to_be32(args->cookie);
573 *p = cpu_to_be32(args->count);
576 static int nfs2_xdr_enc_readdirargs(struct rpc_rqst *req, __be32 *p,
577 const struct nfs_readdirargs *args)
579 struct xdr_stream xdr;
581 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
582 encode_readdirargs(&xdr, args);
583 prepare_reply_buffer(req, args->pages, 0,
584 args->count, NFS_readdirres_sz);
589 * Decode the result of a readdir call.
590 * We're not really decoding anymore, we just leave the buffer untouched
591 * and only check that it is syntactically correct.
592 * The real decoding happens in nfs_decode_entry below, called directly
593 * from nfs_readdir for each entry.
596 nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
598 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
599 struct kvec *iov = rcvbuf->head;
602 unsigned int pglen, recvd;
605 if ((status = ntohl(*p++)))
606 return nfs_stat_to_errno(status);
608 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
609 if (iov->iov_len < hdrlen) {
610 dprintk("NFS: READDIR reply header overflowed:"
611 "length %Zu > %Zu\n", hdrlen, iov->iov_len);
612 return -errno_NFSERR_IO;
613 } else if (iov->iov_len != hdrlen) {
614 dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
615 xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
618 pglen = rcvbuf->page_len;
619 recvd = rcvbuf->len - hdrlen;
622 page = rcvbuf->pages;
626 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
628 dprintk("nfs: %s: prematurely hit end of receive buffer. "
629 "Remaining buffer length is %tu words.\n",
630 func, xdr->end - xdr->p);
634 nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus)
637 p = xdr_inline_decode(xdr, 4);
641 p = xdr_inline_decode(xdr, 4);
645 return ERR_PTR(-EAGAIN);
647 return ERR_PTR(-EBADCOOKIE);
650 p = xdr_inline_decode(xdr, 8);
654 entry->ino = ntohl(*p++);
655 entry->len = ntohl(*p++);
657 p = xdr_inline_decode(xdr, entry->len + 4);
660 entry->name = (const char *) p;
661 p += XDR_QUADLEN(entry->len);
662 entry->prev_cookie = entry->cookie;
663 entry->cookie = ntohl(*p++);
665 entry->d_type = DT_UNKNOWN;
667 p = xdr_inline_peek(xdr, 8);
669 entry->eof = !p[0] && p[1];
676 print_overflow_msg(__func__, xdr);
677 return ERR_PTR(-EAGAIN);
681 * NFS XDR decode functions
684 * Decode simple status reply
687 nfs_xdr_stat(struct rpc_rqst *req, __be32 *p, void *dummy)
691 if ((status = ntohl(*p++)) != 0)
692 status = nfs_stat_to_errno(status);
697 * Decode attrstat reply
698 * GETATTR, SETATTR, WRITE
701 nfs_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
705 if ((status = ntohl(*p++)))
706 return nfs_stat_to_errno(status);
707 xdr_decode_fattr(p, fattr);
712 * Decode diropres reply
713 * LOOKUP, CREATE, MKDIR
716 nfs_xdr_diropres(struct rpc_rqst *req, __be32 *p, struct nfs_diropok *res)
720 if ((status = ntohl(*p++)))
721 return nfs_stat_to_errno(status);
722 p = xdr_decode_fhandle(p, res->fh);
723 xdr_decode_fattr(p, res->fattr);
728 * Decode READLINK reply
731 nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
733 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
734 struct kvec *iov = rcvbuf->head;
739 if ((status = ntohl(*p++)))
740 return nfs_stat_to_errno(status);
741 /* Convert length of symlink */
743 if (len >= rcvbuf->page_len) {
744 dprintk("nfs: server returned giant symlink!\n");
745 return -ENAMETOOLONG;
747 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
748 if (iov->iov_len < hdrlen) {
749 dprintk("NFS: READLINK reply header overflowed:"
750 "length %Zu > %Zu\n", hdrlen, iov->iov_len);
751 return -errno_NFSERR_IO;
752 } else if (iov->iov_len != hdrlen) {
753 dprintk("NFS: READLINK header is short. iovec will be shifted.\n");
754 xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
756 recvd = req->rq_rcv_buf.len - hdrlen;
758 dprintk("NFS: server cheating in readlink reply: "
759 "count %u > recvd %u\n", len, recvd);
763 xdr_terminate_string(rcvbuf, len);
771 nfs_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
773 res->verf->committed = NFS_FILE_SYNC;
774 return nfs_xdr_attrstat(req, p, res->fattr);
778 * Decode STATFS reply
781 nfs_xdr_statfsres(struct rpc_rqst *req, __be32 *p, struct nfs2_fsstat *res)
785 if ((status = ntohl(*p++)))
786 return nfs_stat_to_errno(status);
788 res->tsize = ntohl(*p++);
789 res->bsize = ntohl(*p++);
790 res->blocks = ntohl(*p++);
791 res->bfree = ntohl(*p++);
792 res->bavail = ntohl(*p++);
797 * We need to translate between nfs status return values and
798 * the local errno values which may not be the same.
805 { NFSERR_PERM, -EPERM },
806 { NFSERR_NOENT, -ENOENT },
807 { NFSERR_IO, -errno_NFSERR_IO},
808 { NFSERR_NXIO, -ENXIO },
809 /* { NFSERR_EAGAIN, -EAGAIN }, */
810 { NFSERR_ACCES, -EACCES },
811 { NFSERR_EXIST, -EEXIST },
812 { NFSERR_XDEV, -EXDEV },
813 { NFSERR_NODEV, -ENODEV },
814 { NFSERR_NOTDIR, -ENOTDIR },
815 { NFSERR_ISDIR, -EISDIR },
816 { NFSERR_INVAL, -EINVAL },
817 { NFSERR_FBIG, -EFBIG },
818 { NFSERR_NOSPC, -ENOSPC },
819 { NFSERR_ROFS, -EROFS },
820 { NFSERR_MLINK, -EMLINK },
821 { NFSERR_NAMETOOLONG, -ENAMETOOLONG },
822 { NFSERR_NOTEMPTY, -ENOTEMPTY },
823 { NFSERR_DQUOT, -EDQUOT },
824 { NFSERR_STALE, -ESTALE },
825 { NFSERR_REMOTE, -EREMOTE },
827 { NFSERR_WFLUSH, -EWFLUSH },
829 { NFSERR_BADHANDLE, -EBADHANDLE },
830 { NFSERR_NOT_SYNC, -ENOTSYNC },
831 { NFSERR_BAD_COOKIE, -EBADCOOKIE },
832 { NFSERR_NOTSUPP, -ENOTSUPP },
833 { NFSERR_TOOSMALL, -ETOOSMALL },
834 { NFSERR_SERVERFAULT, -EREMOTEIO },
835 { NFSERR_BADTYPE, -EBADTYPE },
836 { NFSERR_JUKEBOX, -EJUKEBOX },
841 * Convert an NFS error code to a local one.
842 * This one is used jointly by NFSv2 and NFSv3.
845 nfs_stat_to_errno(int stat)
849 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
850 if (nfs_errtbl[i].stat == stat)
851 return nfs_errtbl[i].errno;
853 dprintk("nfs_stat_to_errno: bad nfs status return value: %d\n", stat);
854 return nfs_errtbl[i].errno;
857 #define PROC(proc, argtype, restype, timer) \
858 [NFSPROC_##proc] = { \
859 .p_proc = NFSPROC_##proc, \
860 .p_encode = (kxdrproc_t)nfs2_xdr_enc_##argtype, \
861 .p_decode = (kxdrproc_t) nfs_xdr_##restype, \
862 .p_arglen = NFS_##argtype##_sz, \
863 .p_replen = NFS_##restype##_sz, \
865 .p_statidx = NFSPROC_##proc, \
868 struct rpc_procinfo nfs_procedures[] = {
869 PROC(GETATTR, fhandle, attrstat, 1),
870 PROC(SETATTR, sattrargs, attrstat, 0),
871 PROC(LOOKUP, diropargs, diropres, 2),
872 PROC(READLINK, readlinkargs, readlinkres, 3),
873 PROC(READ, readargs, readres, 3),
874 PROC(WRITE, writeargs, writeres, 4),
875 PROC(CREATE, createargs, diropres, 0),
876 PROC(REMOVE, removeargs, stat, 0),
877 PROC(RENAME, renameargs, stat, 0),
878 PROC(LINK, linkargs, stat, 0),
879 PROC(SYMLINK, symlinkargs, stat, 0),
880 PROC(MKDIR, createargs, diropres, 0),
881 PROC(RMDIR, diropargs, stat, 0),
882 PROC(READDIR, readdirargs, readdirres, 3),
883 PROC(STATFS, fhandle, statfsres, 0),
886 struct rpc_version nfs_version2 = {
888 .nrprocs = ARRAY_SIZE(nfs_procedures),
889 .procs = nfs_procedures