NetBSD/sys/ufs/ffs/ffs_bswap.c

130 lines
4.4 KiB
C

/* $NetBSD: ffs_bswap.c,v 1.10 2000/12/23 14:42:06 enami 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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 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.
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/ufs_bswap.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
#if !defined(_KERNEL)
#include <string.h>
#endif
void
ffs_sb_swap(o, n, ns)
struct fs *o, *n;
int ns;
{
int i;
u_int32_t *o32, *n32;
u_int16_t *o16, *n16;
u_int32_t postbloff = ufs_rw32(o->fs_postbloff, ns);
u_int32_t postblfmt = ufs_rw32(o->fs_postblformat, ns);
/*
* In order to avoid a lot of lines, as the first 52 fields of
* the superblock are u_int32_t, we loop here to convert it.
*/
o32 = (u_int32_t *)o;
n32 = (u_int32_t *)n;
for (i = 0; i < 52; i++)
n32[i] = bswap32(o32[i]);
n->fs_cpc = bswap32(o->fs_cpc);
n->fs_fscktime = bswap32(o->fs_fscktime);
n->fs_contigsumsize = bswap32(o->fs_contigsumsize);
n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen);
n->fs_inodefmt = bswap32(o->fs_inodefmt);
n->fs_maxfilesize = bswap64(o->fs_maxfilesize);
n->fs_qbmask = bswap64(o->fs_qbmask);
n->fs_qfmask = bswap64(o->fs_qfmask);
n->fs_state = bswap32(o->fs_state);
n->fs_postblformat = bswap32(o->fs_postblformat);
n->fs_nrpos = bswap32(o->fs_nrpos);
n->fs_postbloff = bswap32(o->fs_postbloff);
n->fs_rotbloff = bswap32(o->fs_rotbloff);
n->fs_magic = bswap32(o->fs_magic);
/* byteswap the postbl */
o16 = (postblfmt == FS_42POSTBLFMT) ? o->fs_opostbl[0] :
(int16_t *)((u_int8_t *)o + postbloff);
n16 = (postblfmt == FS_42POSTBLFMT) ? n->fs_opostbl[0] :
(int16_t *)((u_int8_t *)n + postbloff);
for (i = 0; i < (postblfmt == FS_42POSTBLFMT ?
128 /* fs_opostbl[16][8] */ :
ufs_rw32(o->fs_cpc, ns) * ufs_rw32(o->fs_nrpos, ns)); i++)
n16[i] = bswap16(o16[i]);
}
void
ffs_dinode_swap(o, n)
struct dinode *o, *n;
{
n->di_mode = bswap16(o->di_mode);
n->di_nlink = bswap16(o->di_nlink);
n->di_u.oldids[0] = bswap16(o->di_u.oldids[0]);
n->di_u.oldids[1] = bswap16(o->di_u.oldids[1]);
n->di_size = bswap64(o->di_size);
n->di_atime = bswap32(o->di_atime);
n->di_atimensec = bswap32(o->di_atimensec);
n->di_mtime = bswap32(o->di_mtime);
n->di_mtimensec = bswap32(o->di_mtimensec);
n->di_ctime = bswap32(o->di_ctime);
n->di_ctimensec = bswap32(o->di_ctimensec);
memcpy(n->di_db, o->di_db, (NDADDR + NIADDR) * sizeof(u_int32_t));
n->di_flags = bswap32(o->di_flags);
n->di_blocks = bswap32(o->di_blocks);
n->di_gen = bswap32(o->di_gen);
n->di_uid = bswap32(o->di_uid);
n->di_gid = bswap32(o->di_gid);
}
void
ffs_csum_swap(o, n, size)
struct csum *o, *n;
int size;
{
int i;
u_int32_t *oint, *nint;
oint = (u_int32_t*)o;
nint = (u_int32_t*)n;
for (i = 0; i < size / sizeof(u_int32_t); i++)
nint[i] = bswap32(oint[i]);
}