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[/] [eco32/] [tags/] [eco32-0.24/] [disk/] [tools/] [fs-NetBSD/] [makefs/] [ufs_bswap.h] - Rev 333
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/* $NetBSD: ufs_bswap.h,v 1.19 2009/10/19 18:41:17 bouyer 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_ #if defined(_KERNEL_OPT) #include "opt_ffs.h" #endif #include "common.h" /* Macros to access UFS flags */ #ifdef FFS_EI #define UFS_MPNEEDSWAP(ump) ((ump)->um_flags & UFS_NEEDSWAP) #define UFS_FSNEEDSWAP(fs) ((fs)->fs_flags & FS_SWAPPED) #define UFS_IPNEEDSWAP(ip) UFS_MPNEEDSWAP((ip)->i_ump) #else #define UFS_MPNEEDSWAP(ump) (0) #define UFS_FSNEEDSWAP(fs) (0) #define UFS_IPNEEDSWAP(ip) (0) #endif #if !defined(_KERNEL) || defined(FFS_EI) /* inlines for access to swapped data */ static inline u_int16_t ufs_rw16(uint16_t a, int ns) { return ((ns) ? bswap16(a) : (a)); } static inline u_int32_t ufs_rw32(uint32_t a, int ns) { return ((ns) ? bswap32(a) : (a)); } static inline u_int64_t ufs_rw64(uint64_t a, int ns) { return ((ns) ? bswap64(a) : (a)); } #else #define ufs_rw16(a, ns) ((uint16_t)(a)) #define ufs_rw32(a, ns) ((uint32_t)(a)) #define ufs_rw64(a, ns) ((uint64_t)(a)) #endif #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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