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 8.3 (Berkeley) 03/30/95 11 */ 12 13 14 #ifndef _NFS_XDR_SUBS_H_ 15 #define _NFS_XDR_SUBS_H_ 16 17 /* 18 * Macros used for conversion to/from xdr representation by nfs... 19 * These use the MACHINE DEPENDENT routines ntohl, htonl 20 * As defined by "XDR: External Data Representation Standard" RFC1014 21 * 22 * To simplify the implementation, we use ntohl/htonl even on big-endian 23 * machines, and count on them being `#define'd away. Some of these 24 * might be slightly more efficient as quad_t copies on a big-endian, 25 * but we cannot count on their alignment anyway. 26 */ 27 28 #define fxdr_unsigned(t, v) ((t)ntohl((long)(v))) 29 #define txdr_unsigned(v) (htonl((long)(v))) 30 31 #define fxdr_nfsv2time(f, t) { \ 32 (t)->ts_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ 33 if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ 34 (t)->ts_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ 35 else \ 36 (t)->ts_nsec = 0; \ 37 } 38 #define txdr_nfsv2time(f, t) { \ 39 ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->ts_sec); \ 40 if ((f)->ts_nsec != -1) \ 41 ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->ts_nsec / 1000); \ 42 else \ 43 ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \ 44 } 45 46 #define fxdr_nfsv3time(f, t) { \ 47 (t)->ts_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \ 48 (t)->ts_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \ 49 } 50 #define txdr_nfsv3time(f, t) { \ 51 ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->ts_sec); \ 52 ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->ts_nsec); \ 53 } 54 55 #define fxdr_hyper(f, t) { \ 56 ((long *)(t))[_QUAD_HIGHWORD] = ntohl(((long *)(f))[0]); \ 57 ((long *)(t))[_QUAD_LOWWORD] = ntohl(((long *)(f))[1]); \ 58 } 59 #define txdr_hyper(f, t) { \ 60 ((long *)(t))[0] = htonl(((long *)(f))[_QUAD_HIGHWORD]); \ 61 ((long *)(t))[1] = htonl(((long *)(f))[_QUAD_LOWWORD]); \ 62 } 63 64 #endif 65