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 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35 #ifndef _NFS_XDR_SUBS_H_ 36 #define _NFS_XDR_SUBS_H_ 37 38 /* 39 * Macros used for conversion to/from xdr representation by nfs... 40 * These use the MACHINE DEPENDENT routines ntohl, htonl 41 * As defined by "XDR: External Data Representation Standard" RFC1014 42 * 43 * To simplify the implementation, we use ntohl/htonl even on big-endian 44 * machines, and count on them being `#define'd away. Some of these 45 * might be slightly more efficient as quad_t copies on a big-endian, 46 * but we cannot count on their alignment anyway. 47 */ 48 49 #define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v))) 50 #define txdr_unsigned(v) (htonl((int32_t)(v))) 51 52 #define fxdr_nfsv2time(f, t) do { \ 53 (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ 54 if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ 55 (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ 56 else \ 57 (t)->tv_nsec = 0; \ 58 } while (0) 59 60 #define txdr_nfsv2time(f, t) do { \ 61 ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \ 62 if ((f)->tv_nsec != -1) \ 63 ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \ 64 else \ 65 ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \ 66 } while (0) 67 68 #define fxdr_nfsv3time(f, t) do { \ 69 (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \ 70 (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \ 71 } while (0) 72 73 #define txdr_nfsv3time(f, t) do { \ 74 ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \ 75 ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \ 76 } while (0) 77 78 #define fxdr_nfsv4time(f, t) do { \ 79 (t)->tv_sec = ntohl(((struct nfsv4_time *)(f))->nfsv4_sec); \ 80 (t)->tv_nsec = (ntohl(((struct nfsv4_time *)(f))->nfsv4_nsec) % \ 81 1000000000); \ 82 } while (0) 83 84 #define txdr_nfsv4time(f, t) do { \ 85 ((struct nfsv4_time *)(t))->nfsv4_highsec = 0; \ 86 ((struct nfsv4_time *)(t))->nfsv4_sec = htonl((f)->tv_sec); \ 87 ((struct nfsv4_time *)(t))->nfsv4_nsec = htonl((f)->tv_nsec); \ 88 } while (0) 89 90 #define fxdr_hyper(f) \ 91 ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \ 92 (u_quad_t)(ntohl(((u_int32_t *)(f))[1]))) 93 94 #define txdr_hyper(f, t) do { \ 95 ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \ 96 ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \ 97 } while (0) 98 99 #endif /* _NFS_XDR_SUBS_H_ */ 100