1 /* $NetBSD: xdr_subs.h,v 1.15 2005/12/11 12:25:17 christos 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95 35 */ 36 37 38 #ifndef _NFS_XDR_SUBS_H_ 39 #define _NFS_XDR_SUBS_H_ 40 41 /* 42 * Macros used for conversion to/from xdr representation by nfs... 43 * These use the MACHINE DEPENDENT routines ntohl, htonl 44 * As defined by "XDR: External Data Representation Standard" RFC1014 45 * 46 * To simplify the implementation, we use ntohl/htonl even on big-endian 47 * machines, and count on them being `#define'd away. Some of these 48 * might be slightly more efficient as quad_t copies on a big-endian, 49 * but we cannot count on their alignment anyway. 50 */ 51 52 #define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v))) 53 #define txdr_unsigned(v) (htonl((int32_t)(v))) 54 55 /* 56 * Directory cookies shouldn't really be XDR-ed, these functions 57 * are just here to attempt to keep information within 32 bits. And 58 * make things look better. See nfs_cookieheuristic. 59 */ 60 #define fxdr_cookie3(v) (((off_t)((v)[0]) << 32) | ((off_t) (v)[1])) 61 #define fxdr_swapcookie3(v) (((off_t)((v)[1]) << 32) | ((off_t) (v)[0])) 62 63 #define txdr_cookie3(f, v) { \ 64 (v)[1] = (u_int32_t)((f) & 0xffffffffLL); \ 65 (v)[0] = (u_int32_t)((f) >> 32); \ 66 } 67 #define txdr_swapcookie3(f, v) { \ 68 (v)[0] = (u_int32_t)((f) & 0xffffffffLL); \ 69 (v)[1] = (u_int32_t)((f) >> 32); \ 70 } 71 72 #define fxdr_nfsv2time(f, t) { \ 73 (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ 74 if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ 75 (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ 76 else \ 77 (t)->tv_nsec = 0; \ 78 } 79 #define txdr_nfsv2time(f, t) { \ 80 ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \ 81 if ((f)->tv_nsec != -1) \ 82 ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \ 83 else \ 84 ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \ 85 } 86 87 #define fxdr_nfsv3time(f, t) { \ 88 (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \ 89 (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \ 90 } 91 #define txdr_nfsv3time(f, t) { \ 92 ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \ 93 ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \ 94 } 95 96 #define fxdr_hyper(f) \ 97 ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \ 98 (u_quad_t)(ntohl(((u_int32_t *)(f))[1]))) 99 100 101 #define txdr_hyper(f, t) { \ 102 ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \ 103 ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \ 104 } 105 106 #endif 107