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/* $NetBSD: ufs_bswap.h,v 1.21 2016/04/29 03:05:04 christos Exp $ */
/*
* Copyright (c) 1998 Manuel Bouyer.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
#ifndef _UFS_UFS_BSWAP_H_
#define _UFS_UFS_BSWAP_H_
#include <sys/endian.h>
/* Macros to access UFS flags */
#define UFS_MPNEEDSWAP(ump) ((void)(ump), 0)
#define UFS_FSNEEDSWAP(fs) ((void)(fs), 0)
#define UFS_IPNEEDSWAP(ip) ((void)(ip), 0)
/* inlines for access to swapped data */
static inline u_int16_t
ufs_rw16(uint16_t a, int ns)
{
return ((ns) ? swap16(a) : (a));
}
static inline u_int32_t
ufs_rw32(uint32_t a, int ns)
{
return ((ns) ? swap32(a) : (a));
}
static inline u_int64_t
ufs_rw64(uint64_t a, int ns)
{
return ((ns) ? swap64(a) : (a));
}
#define ufs_add16(a, b, ns) \
(a) = ufs_rw16(ufs_rw16((a), (ns)) + (b), (ns))
#define ufs_add32(a, b, ns) \
(a) = ufs_rw32(ufs_rw32((a), (ns)) + (b), (ns))
#define ufs_add64(a, b, ns) \
(a) = ufs_rw64(ufs_rw64((a), (ns)) + (b), (ns))
#endif /* !_UFS_UFS_BSWAP_H_ */
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