fs/nfs/nfs2xdr.c

97 static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_pgio_res *result)
102 	p = xdr_inline_decode(xdr, 4);
106 	recvd = xdr_read_pages(xdr, count);
142 static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status)
146 	p = xdr_inline_decode(xdr, 4);
155 	trace_nfs_xdr_status(xdr, (int)*status);
185 static void encode_fhandle(struct xdr_stream *xdr, const struct nfs_fh *fh)
189 	p = xdr_reserve_space(xdr, NFS2_FHSIZE);
193 static int decode_fhandle(struct xdr_stream *xdr, struct nfs_fh *fh)
197 	p = xdr_inline_decode(xdr, NFS2_FHSIZE);
266 static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
272 	p = xdr_inline_decode(xdr, NFS_fattr_sz << 2);
340 static void encode_sattr(struct xdr_stream *xdr, const struct iattr *attr,
345 	p = xdr_reserve_space(xdr, NFS_sattr_sz << 2);
383 static void encode_filename(struct xdr_stream *xdr,
389 	p = xdr_reserve_space(xdr, 4 + length);
393 static int decode_filename_inline(struct xdr_stream *xdr,
399 	p = xdr_inline_decode(xdr, 4);
405 	p = xdr_inline_decode(xdr, count);
421 static void encode_path(struct xdr_stream *xdr, struct page **pages, u32 length)
425 	p = xdr_reserve_space(xdr, 4);
427 	xdr_write_pages(xdr, pages, 0, length);
430 static int decode_path(struct xdr_stream *xdr)
435 	p = xdr_inline_decode(xdr, 4);
439 	if (unlikely(length >= xdr->buf->page_len || length > NFS_MAXPATHLEN))
441 	recvd = xdr_read_pages(xdr, length);
444 	xdr_terminate_string(xdr->buf, length);
465 static int decode_attrstat(struct xdr_stream *xdr, struct nfs_fattr *result,
472 	error = decode_stat(xdr, &status);
479 	error = decode_fattr(xdr, result, userns);
494 static void encode_diropargs(struct xdr_stream *xdr, const struct nfs_fh *fh,
497 	encode_fhandle(xdr, fh);
498 	encode_filename(xdr, name, length);
514 static int decode_diropok(struct xdr_stream *xdr, struct nfs_diropok *result,
519 	error = decode_fhandle(xdr, result->fh);
522 	error = decode_fattr(xdr, result->fattr, userns);
527 static int decode_diropres(struct xdr_stream *xdr, struct nfs_diropok *result,
533 	error = decode_stat(xdr, &status);
538 	error = decode_diropok(xdr, result, userns);
554 				 struct xdr_stream *xdr,
559 	encode_fhandle(xdr, fh);
571 				   struct xdr_stream *xdr,
576 	encode_fhandle(xdr, args->fh);
577 	encode_sattr(xdr, args->sattr, rpc_rqst_userns(req));
581 				   struct xdr_stream *xdr,
586 	encode_diropargs(xdr, args->fh, args->name, args->len);
590 				      struct xdr_stream *xdr,
595 	encode_fhandle(xdr, args->fh);
610 static void encode_readargs(struct xdr_stream *xdr,
617 	encode_fhandle(xdr, args->fh);
619 	p = xdr_reserve_space(xdr, 4 + 4 + 4);
626 				  struct xdr_stream *xdr,
631 	encode_readargs(xdr, args);
648 static void encode_writeargs(struct xdr_stream *xdr,
655 	encode_fhandle(xdr, args->fh);
657 	p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4);
664 	xdr_write_pages(xdr, args->pages, args->pgbase, count);
668 				   struct xdr_stream *xdr,
673 	encode_writeargs(xdr, args);
674 	xdr->buf->flags |= XDRBUF_WRITE;
686 				    struct xdr_stream *xdr,
691 	encode_diropargs(xdr, args->fh, args->name, args->len);
692 	encode_sattr(xdr, args->sattr, rpc_rqst_userns(req));
696 				    struct xdr_stream *xdr,
701 	encode_diropargs(xdr, args->fh, args->name.name, args->name.len);
713 				    struct xdr_stream *xdr,
720 	encode_diropargs(xdr, args->old_dir, old->name, old->len);
721 	encode_diropargs(xdr, args->new_dir, new->name, new->len);
733 				  struct xdr_stream *xdr,
738 	encode_fhandle(xdr, args->fromfh);
739 	encode_diropargs(xdr, args->tofh, args->toname, args->tolen);
752 				     struct xdr_stream *xdr,
757 	encode_diropargs(xdr, args->fromfh, args->fromname, args->fromlen);
758 	encode_path(xdr, args->pages, args->pathlen);
759 	encode_sattr(xdr, args->sattr, rpc_rqst_userns(req));
771 static void encode_readdirargs(struct xdr_stream *xdr,
776 	encode_fhandle(xdr, args->fh);
778 	p = xdr_reserve_space(xdr, 4 + 4);
784 				     struct xdr_stream *xdr,
789 	encode_readdirargs(xdr, args);
801 static int nfs2_xdr_dec_stat(struct rpc_rqst *req, struct xdr_stream *xdr,
807 	error = decode_stat(xdr, &status);
818 static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, struct xdr_stream *xdr,
821 	return decode_attrstat(xdr, result, NULL, rpc_rqst_userns(req));
824 static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, struct xdr_stream *xdr,
827 	return decode_diropres(xdr, result, rpc_rqst_userns(req));
841 				    struct xdr_stream *xdr, void *__unused)
846 	error = decode_stat(xdr, &status);
851 	error = decode_path(xdr);
869 static int nfs2_xdr_dec_readres(struct rpc_rqst *req, struct xdr_stream *xdr,
876 	error = decode_stat(xdr, &status);
882 	error = decode_fattr(xdr, result->fattr, rpc_rqst_userns(req));
885 	error = decode_nfsdata(xdr, result);
892 static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, struct xdr_stream *xdr,
899 	return decode_attrstat(xdr, result->fattr, &result->op_status,
906  * @xdr: XDR stream where entry resides
926 int nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
932 	p = xdr_inline_decode(xdr, 4);
936 		p = xdr_inline_decode(xdr, 4);
945 	p = xdr_inline_decode(xdr, 4);
950 	error = decode_filename_inline(xdr, &entry->name, &entry->len);
958 	p = xdr_inline_decode(xdr, 4);
985 static int decode_readdirok(struct xdr_stream *xdr)
987 	return xdr_read_pages(xdr, xdr->buf->page_len);
991 				   struct xdr_stream *xdr, void *__unused)
996 	error = decode_stat(xdr, &status);
1001 	error = decode_readdirok(xdr);
1024 static int decode_info(struct xdr_stream *xdr, struct nfs2_fsstat *result)
1028 	p = xdr_inline_decode(xdr, NFS_info_sz << 2);
1039 static int nfs2_xdr_dec_statfsres(struct rpc_rqst *req, struct xdr_stream *xdr,
1045 	error = decode_stat(xdr, &status);
1050 	error = decode_info(xdr, result);