1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95 37 * $FreeBSD: src/sys/nfs/xdr_subs.h,v 1.13 1999/08/28 00:50:04 peter Exp $ 38 */ 39 40 41 #ifndef _NFS_XDR_SUBS_H_ 42 #define _NFS_XDR_SUBS_H_ 43 44 /* 45 * Macros used for conversion to/from xdr representation by nfs... 46 * These use the MACHINE DEPENDENT routines ntohl, htonl 47 * As defined by "XDR: External Data Representation Standard" RFC1014 48 * 49 * To simplify the implementation, we use ntohl/htonl even on big-endian 50 * machines, and count on them being `#define'd away. Some of these 51 * might be slightly more efficient as quad_t copies on a big-endian, 52 * but we cannot count on their alignment anyway. 53 */ 54 55 #define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v))) 56 #define txdr_unsigned(v) (htonl((int32_t)(v))) 57 58 #define fxdr_nfsv2time(f, t) \ 59 do { \ 60 (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ 61 if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ 62 (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ 63 else \ 64 (t)->tv_nsec = 0; \ 65 } while (0) 66 #define txdr_nfsv2time(f, t) \ 67 do { \ 68 ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \ 69 if ((f)->tv_nsec != -1) \ 70 ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \ 71 else \ 72 ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \ 73 } while (0) 74 75 #define fxdr_nfsv3time(f, t) \ 76 do { \ 77 (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \ 78 (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \ 79 } while (0) 80 #define txdr_nfsv3time(f, t) \ 81 do { \ 82 ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \ 83 ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \ 84 } while (0) 85 86 #define fxdr_hyper(f) \ 87 ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \ 88 (u_quad_t)(ntohl(((u_int32_t *)(f))[1]))) 89 #define txdr_hyper(f, t) \ 90 do { \ 91 ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \ 92 ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \ 93 } while (0) 94 95 #endif 96