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/* $OpenBSD: xdr_subs.h,v 1.9 2013/08/13 05:52:25 guenther Exp $ */
/* $NetBSD: xdr_subs.h,v 1.11 1996/02/18 11:54:12 fvdl Exp $ */
/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95
*/
#ifndef _NFS_XDR_SUBS_H_
#define _NFS_XDR_SUBS_H_
/*
* Macros used for conversion to/from xdr representation by nfs...
* These use the MACHINE DEPENDENT routines ntohl, htonl
* As defined by "XDR: External Data Representation Standard" RFC1014
*
* To simplify the implementation, we use ntohl/htonl even on big-endian
* machines, and count on them being `#define'd away. Some of these
* might be slightly more efficient as quad_t copies on a big-endian,
* but we cannot count on their alignment anyway.
*/
#define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v)))
#define txdr_unsigned(v) (htonl((int32_t)(v)))
#define fxdr_nfsv2time(f, t) do { \
(t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \
if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \
(t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
else \
(t)->tv_nsec = 0; \
} while (0)
#define txdr_nfsv2time(f, t) do { \
((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \
if ((f)->tv_nsec != -1) \
((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
else \
((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \
} while (0)
#define fxdr_nfsv3time(f, t) do { \
(t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
(t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
} while (0)
#define txdr_nfsv3time(f, t) do { \
((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \
((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \
} while (0)
#define fxdr_hyper(f) \
((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \
(u_quad_t)(ntohl(((u_int32_t *)(f))[1])))
#define txdr_hyper(f, t) do { \
((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \
((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \
} while (0)
#endif
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