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 * %sccs.include.redist.c% 9 * 10 * @(#)xdr_subs.h 8.1 (Berkeley) 06/10/93 11 */ 12 13 /* 14 * Macros used for conversion to/from xdr representation by nfs... 15 * These use the MACHINE DEPENDENT routines ntohl, htonl 16 * As defined by "XDR: External Data Representation Standard" RFC1014 17 * 18 * To simplify the implementation, we use ntohl/htonl even on big-endian 19 * machines, and count on them being `#define'd away. Some of these 20 * might be slightly more efficient as quad_t copies on a big-endian, 21 * but we cannot count on their alignment anyway. 22 */ 23 24 #define fxdr_unsigned(t, v) ((t)ntohl((long)(v))) 25 #define txdr_unsigned(v) (htonl((long)(v))) 26 27 #define fxdr_nfstime(f, t) { \ 28 (t)->ts_sec = ntohl(((struct nfsv2_time *)(f))->nfs_sec); \ 29 (t)->ts_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfs_usec); \ 30 } 31 #define txdr_nfstime(f, t) { \ 32 ((struct nfsv2_time *)(t))->nfs_sec = htonl((f)->ts_sec); \ 33 ((struct nfsv2_time *)(t))->nfs_usec = htonl((f)->ts_nsec) / 1000; \ 34 } 35 36 #define fxdr_nqtime(f, t) { \ 37 (t)->ts_sec = ntohl(((struct nqnfs_time *)(f))->nq_sec); \ 38 (t)->ts_nsec = ntohl(((struct nqnfs_time *)(f))->nq_nsec); \ 39 } 40 #define txdr_nqtime(f, t) { \ 41 ((struct nqnfs_time *)(t))->nq_sec = htonl((f)->ts_sec); \ 42 ((struct nqnfs_time *)(t))->nq_nsec = htonl((f)->ts_nsec); \ 43 } 44 45 #define fxdr_hyper(f, t) { \ 46 ((long *)(t))[_QUAD_HIGHWORD] = ntohl(((long *)(f))[0]); \ 47 ((long *)(t))[_QUAD_LOWWORD] = ntohl(((long *)(f))[1]); \ 48 } 49 #define txdr_hyper(f, t) { \ 50 ((long *)(t))[0] = htonl(((long *)(f))[_QUAD_HIGHWORD]); \ 51 ((long *)(t))[1] = htonl(((long *)(f))[_QUAD_LOWWORD]); \ 52 } 53