123 lines
5.0 KiB
C
123 lines
5.0 KiB
C
/* $NetBSD: ext2fs_bswap.c,v 1.6 2000/07/24 00:23:10 mycroft Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1997 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/types.h>
|
|
#include <sys/systm.h>
|
|
#include <ufs/ext2fs/ext2fs.h>
|
|
#include <ufs/ext2fs/ext2fs_dinode.h>
|
|
|
|
#if !defined(_KERNEL)
|
|
#include <string.h>
|
|
#endif
|
|
|
|
/* These functions are only needed if native byte order is not big endian */
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
void
|
|
e2fs_sb_bswap(old, new)
|
|
struct ext2fs *old, *new;
|
|
{
|
|
/* preserve unused fields */
|
|
memcpy(new, old, sizeof(struct ext2fs));
|
|
new->e2fs_icount = bswap32(old->e2fs_icount);
|
|
new->e2fs_bcount = bswap32(old->e2fs_bcount);
|
|
new->e2fs_rbcount = bswap32(old->e2fs_rbcount);
|
|
new->e2fs_fbcount = bswap32(old->e2fs_fbcount);
|
|
new->e2fs_ficount = bswap32(old->e2fs_ficount);
|
|
new->e2fs_first_dblock = bswap32(old->e2fs_first_dblock);
|
|
new->e2fs_log_bsize = bswap32(old->e2fs_log_bsize);
|
|
new->e2fs_fsize = bswap32(old->e2fs_fsize);
|
|
new->e2fs_bpg = bswap32(old->e2fs_bpg);
|
|
new->e2fs_fpg = bswap32(old->e2fs_fpg);
|
|
new->e2fs_ipg = bswap32(old->e2fs_ipg);
|
|
new->e2fs_mtime = bswap32(old->e2fs_mtime);
|
|
new->e2fs_wtime = bswap32(old->e2fs_wtime);
|
|
new->e2fs_mnt_count = bswap16(old->e2fs_mnt_count);
|
|
new->e2fs_max_mnt_count = bswap16(old->e2fs_max_mnt_count);
|
|
new->e2fs_magic = bswap16(old->e2fs_magic);
|
|
new->e2fs_state = bswap16(old->e2fs_state);
|
|
new->e2fs_beh = bswap16(old->e2fs_beh);
|
|
new->e2fs_minrev = bswap16(old->e2fs_minrev);
|
|
new->e2fs_lastfsck = bswap32(old->e2fs_lastfsck);
|
|
new->e2fs_fsckintv = bswap32(old->e2fs_fsckintv);
|
|
new->e2fs_creator = bswap32(old->e2fs_creator);
|
|
new->e2fs_rev = bswap32(old->e2fs_rev);
|
|
new->e2fs_ruid = bswap16(old->e2fs_ruid);
|
|
new->e2fs_rgid = bswap16(old->e2fs_rgid);
|
|
new->e2fs_first_ino = bswap32(old->e2fs_first_ino);
|
|
new->e2fs_inode_size = bswap16(old->e2fs_inode_size);
|
|
new->e2fs_block_group_nr = bswap16(old->e2fs_block_group_nr);
|
|
new->e2fs_features_compat = bswap32(old->e2fs_features_compat);
|
|
new->e2fs_features_incompat = bswap32(old->e2fs_features_incompat);
|
|
new->e2fs_features_rocompat = bswap32(old->e2fs_features_rocompat);
|
|
new->e2fs_algo = bswap32(old->e2fs_algo);
|
|
}
|
|
|
|
void e2fs_cg_bswap(old, new, size)
|
|
struct ext2_gd *old, *new;
|
|
int size;
|
|
{
|
|
int i;
|
|
for (i=0; i < (size / sizeof(struct ext2_gd)); i++) {
|
|
new[i].ext2bgd_b_bitmap = bswap32(old[i].ext2bgd_b_bitmap);
|
|
new[i].ext2bgd_i_bitmap = bswap32(old[i].ext2bgd_i_bitmap);
|
|
new[i].ext2bgd_i_tables = bswap32(old[i].ext2bgd_i_tables);
|
|
new[i].ext2bgd_nbfree = bswap16(old[i].ext2bgd_nbfree);
|
|
new[i].ext2bgd_nifree = bswap16(old[i].ext2bgd_nifree);
|
|
new[i].ext2bgd_ndirs = bswap16(old[i].ext2bgd_ndirs);
|
|
}
|
|
}
|
|
|
|
void e2fs_i_bswap(old, new)
|
|
struct ext2fs_dinode *old, *new;
|
|
{
|
|
new->e2di_mode = bswap16(old->e2di_mode);
|
|
new->e2di_uid = bswap16(old->e2di_uid);
|
|
new->e2di_gid = bswap16(old->e2di_gid);
|
|
new->e2di_nlink = bswap16(old->e2di_nlink);
|
|
new->e2di_size = bswap32(old->e2di_size);
|
|
new->e2di_atime = bswap32(old->e2di_atime);
|
|
new->e2di_ctime = bswap32(old->e2di_ctime);
|
|
new->e2di_mtime = bswap32(old->e2di_mtime);
|
|
new->e2di_dtime = bswap32(old->e2di_dtime);
|
|
new->e2di_nblock = bswap32(old->e2di_nblock);
|
|
new->e2di_flags = bswap32(old->e2di_flags);
|
|
new->e2di_gen = bswap32(old->e2di_gen);
|
|
new->e2di_facl = bswap32(old->e2di_facl);
|
|
new->e2di_dacl = bswap32(old->e2di_dacl);
|
|
new->e2di_faddr = bswap32(old->e2di_faddr);
|
|
memcpy(&new->e2di_blocks[0], &old->e2di_blocks[0],
|
|
(NDADDR+NIADDR) * sizeof(int));
|
|
}
|
|
#endif
|