1 /* $NetBSD: xdr_subs.h,v 1.13 1999/03/06 05:34:40 fair Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95 39 */ 40 41 42 #ifndef _NFS_XDR_SUBS_H_ 43 #define _NFS_XDR_SUBS_H_ 44 45 /* 46 * Macros used for conversion to/from xdr representation by nfs... 47 * These use the MACHINE DEPENDENT routines ntohl, htonl 48 * As defined by "XDR: External Data Representation Standard" RFC1014 49 * 50 * To simplify the implementation, we use ntohl/htonl even on big-endian 51 * machines, and count on them being `#define'd away. Some of these 52 * might be slightly more efficient as quad_t copies on a big-endian, 53 * but we cannot count on their alignment anyway. 54 */ 55 56 #define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v))) 57 #define txdr_unsigned(v) (htonl((int32_t)(v))) 58 59 /* 60 * Directory cookies shouldn't really be XDR-ed, these functions 61 * are just here to attempt to keep information within 32 bits. And 62 * make things look better. See nfs_cookieheuristic. 63 */ 64 #define fxdr_cookie3(v) (((off_t)((v)[0]) << 32) | ((off_t) (v)[1])) 65 #define fxdr_swapcookie3(v) (((off_t)((v)[1]) << 32) | ((off_t) (v)[0])) 66 67 #define txdr_cookie3(f, v) { \ 68 (v)[1] = (u_int32_t)((f) & 0xffffffffLL); \ 69 (v)[0] = (u_int32_t)((f) >> 32); \ 70 } 71 #define txdr_swapcookie3(f, v) { \ 72 (v)[0] = (u_int32_t)((f) & 0xffffffffLL); \ 73 (v)[1] = (u_int32_t)((f) >> 32); \ 74 } 75 76 #define fxdr_nfsv2time(f, t) { \ 77 (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ 78 if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ 79 (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ 80 else \ 81 (t)->tv_nsec = 0; \ 82 } 83 #define txdr_nfsv2time(f, t) { \ 84 ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \ 85 if ((f)->tv_nsec != -1) \ 86 ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \ 87 else \ 88 ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \ 89 } 90 91 #define fxdr_nfsv3time(f, t) { \ 92 (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \ 93 (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \ 94 } 95 #define txdr_nfsv3time(f, t) { \ 96 ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \ 97 ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \ 98 } 99 100 #define fxdr_hyper(f) \ 101 ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \ 102 (u_quad_t)(ntohl(((u_int32_t *)(f))[1]))) 103 104 105 #define txdr_hyper(f, t) { \ 106 ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \ 107 ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \ 108 } 109 110 #endif 111