1/* $OpenBSD: xdr_subs.h,v 1.10 2015/04/17 04:43:21 guenther Exp $ */ 2/* $NetBSD: xdr_subs.h,v 1.11 1996/02/18 11:54:12 fvdl Exp $ */ 3 4/* 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Rick Macklem at The University of Guelph. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95 36 */ 37 38 39#ifndef _NFS_XDR_SUBS_H_ 40#define _NFS_XDR_SUBS_H_ 41 42/* 43 * Macros used for conversion to/from xdr representation by nfs... 44 * These use the MACHINE DEPENDENT routines ntohl, htonl 45 * As defined by "XDR: External Data Representation Standard" RFC1014 46 * 47 * To simplify the implementation, we use ntohl/htonl even on big-endian 48 * machines, and count on them being `#define'd away. Some of these 49 * might be slightly more efficient as quad_t copies on a big-endian, 50 * but we cannot count on their alignment anyway. 51 */ 52 53#define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v))) 54#define txdr_unsigned(v) (htonl((int32_t)(v))) 55 56#define fxdr_nfsv2time(f, t) do { \ 57 (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ 58 if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ 59 (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ 60 else \ 61 (t)->tv_nsec = 0; \ 62} while (0) 63 64struct nfsv2_time; 65void txdr_nfsv2time(const struct timespec *_from, struct nfsv2_time *_to); 66 67#define fxdr_nfsv3time(f, t) do { \ 68 (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \ 69 (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \ 70} while (0) 71#define txdr_nfsv3time(f, t) do { \ 72 ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \ 73 ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \ 74} while (0) 75 76#define fxdr_hyper(f) \ 77 ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \ 78 (u_quad_t)(ntohl(((u_int32_t *)(f))[1]))) 79 80 81#define txdr_hyper(f, t) do { \ 82 ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \ 83 ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \ 84} while (0) 85 86#endif 87