Annotation of sys/nfs/xdr_subs.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: xdr_subs.h,v 1.8 2003/06/02 23:28:20 millert Exp $ */
! 2: /* $NetBSD: xdr_subs.h,v 1.11 1996/02/18 11:54:12 fvdl Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1989, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to Berkeley by
! 9: * Rick Macklem at The University of Guelph.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: *
! 35: * @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95
! 36: */
! 37:
! 38:
! 39: #ifndef _NFS_XDR_SUBS_H_
! 40: #define _NFS_XDR_SUBS_H_
! 41:
! 42: /*
! 43: * Macros used for conversion to/from xdr representation by nfs...
! 44: * These use the MACHINE DEPENDENT routines ntohl, htonl
! 45: * As defined by "XDR: External Data Representation Standard" RFC1014
! 46: *
! 47: * To simplify the implementation, we use ntohl/htonl even on big-endian
! 48: * machines, and count on them being `#define'd away. Some of these
! 49: * might be slightly more efficient as quad_t copies on a big-endian,
! 50: * but we cannot count on their alignment anyway.
! 51: */
! 52:
! 53: #define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v)))
! 54: #define txdr_unsigned(v) (htonl((int32_t)(v)))
! 55:
! 56: #define fxdr_nfsv2time(f, t) { \
! 57: (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \
! 58: if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \
! 59: (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
! 60: else \
! 61: (t)->tv_nsec = 0; \
! 62: }
! 63: #define txdr_nfsv2time(f, t) { \
! 64: ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \
! 65: if ((f)->tv_nsec != -1) \
! 66: ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
! 67: else \
! 68: ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \
! 69: }
! 70:
! 71: #define fxdr_nfsv3time(f, t) { \
! 72: (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
! 73: (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
! 74: }
! 75: #define txdr_nfsv3time(f, t) { \
! 76: ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \
! 77: ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \
! 78: }
! 79:
! 80: #define fxdr_hyper(f) \
! 81: ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \
! 82: (u_quad_t)(ntohl(((u_int32_t *)(f))[1])))
! 83:
! 84:
! 85: #define txdr_hyper(f, t) { \
! 86: ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \
! 87: ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \
! 88: }
! 89:
! 90: #endif
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