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/*      $NetBSD: ffs_bswap.c,v 1.35 2011/03/06 17:08:38 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.

 *

 */

#if HAVE_NBTOOL_CONFIG_H

#include "nbtool_config.h"

#endif

#include <sys/cdefs.h>

#if defined(__KERNEL_RCSID) && !defined(__lint)

__KERNEL_RCSID(0, "$NetBSD: ffs_bswap.c,v 1.35 2011/03/06 17:08:38 bouyer Exp $");

#endif

#include <sys/param.h>

#if defined(_KERNEL)

#include <sys/systm.h>

#endif

#include "common.h"

#include "dinode.h"

#include "ufs_inode.h"

//#include <ufs/ufs/quota.h>

#include "ufs_bswap.h"

#include "fs.h"

#include "ffs_extern.h"

#if !defined(_KERNEL)

#include <stddef.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#define panic(x)        printf("%s\n", (x)), abort()

#endif

void

ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n);

void

ffs_sb_swap(struct fs *o, struct fs *n)

{

        size_t i;

        u_int32_t *o32, *n32;

        /*

         * In order to avoid a lot of lines, as the first N fields (52)

         * of the superblock up to fs_fmod are u_int32_t, we just loop

         * here to convert them.

         */

        o32 = (u_int32_t *)o;

        n32 = (u_int32_t *)n;

        for (i = 0; i < offsetof(struct fs, fs_fmod) / sizeof(u_int32_t); i++)

                n32[i] = bswap32(o32[i]);

        n->fs_swuid = bswap64(o->fs_swuid);

        n->fs_cgrotor = bswap32(o->fs_cgrotor); /* Unused */

        n->fs_old_cpc = bswap32(o->fs_old_cpc);

        /* These fields overlap with a possible location for the

         * historic FS_DYNAMICPOSTBLFMT postbl table, and with the

         * first half of the historic FS_42POSTBLFMT postbl table.

         */

        n->fs_maxbsize = bswap32(o->fs_maxbsize);

        /* XXX journal */

        n->fs_quota_magic = bswap32(o->fs_quota_magic);

        for (i = 0; i < MAXQUOTAS; i++)

                n->fs_quotafile[i] = bswap64(o->fs_quotafile[i]);

        n->fs_sblockloc = bswap64(o->fs_sblockloc);

        ffs_csumtotal_swap(&o->fs_cstotal, &n->fs_cstotal);

        n->fs_time = bswap64(o->fs_time);

        n->fs_size = bswap64(o->fs_size);

        n->fs_dsize = bswap64(o->fs_dsize);

        n->fs_csaddr = bswap64(o->fs_csaddr);

        n->fs_pendingblocks = bswap64(o->fs_pendingblocks);

        n->fs_pendinginodes = bswap32(o->fs_pendinginodes);

        /* These fields overlap with the second half of the

         * historic FS_42POSTBLFMT postbl table

         */

        for (i = 0; i < FSMAXSNAP; i++)

                n->fs_snapinum[i] = bswap32(o->fs_snapinum[i]);

        n->fs_avgfilesize = bswap32(o->fs_avgfilesize);

        n->fs_avgfpdir = bswap32(o->fs_avgfpdir);

        /* fs_sparecon[28] - ignore for now */

        n->fs_flags = bswap32(o->fs_flags);

        n->fs_contigsumsize = bswap32(o->fs_contigsumsize);

        n->fs_maxsymlinklen = bswap32(o->fs_maxsymlinklen);

        n->fs_old_inodefmt = bswap32(o->fs_old_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_old_postblformat = bswap32(o->fs_old_postblformat);

        n->fs_old_nrpos = bswap32(o->fs_old_nrpos);

        n->fs_old_postbloff = bswap32(o->fs_old_postbloff);

        n->fs_old_rotbloff = bswap32(o->fs_old_rotbloff);

        n->fs_magic = bswap32(o->fs_magic);

}

void

ffs_dinode1_swap(struct ufs1_dinode *o, struct ufs1_dinode *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_dinode2_swap(struct ufs2_dinode *o, struct ufs2_dinode *n)

{

        n->di_mode = bswap16(o->di_mode);

        n->di_nlink = bswap16(o->di_nlink);

        n->di_uid = bswap32(o->di_uid);

        n->di_gid = bswap32(o->di_gid);

        n->di_blksize = bswap32(o->di_blksize);

        n->di_size = bswap64(o->di_size);

        n->di_blocks = bswap64(o->di_blocks);

        n->di_atime = bswap64(o->di_atime);

        n->di_atimensec = bswap32(o->di_atimensec);

        n->di_mtime = bswap64(o->di_mtime);

        n->di_mtimensec = bswap32(o->di_mtimensec);

        n->di_ctime = bswap64(o->di_ctime);

        n->di_ctimensec = bswap32(o->di_ctimensec);

        n->di_birthtime = bswap64(o->di_birthtime);

        n->di_birthnsec = bswap32(o->di_birthnsec);

        n->di_gen = bswap32(o->di_gen);

        n->di_kernflags = bswap32(o->di_kernflags);

        n->di_flags = bswap32(o->di_flags);

        n->di_extsize = bswap32(o->di_extsize);

        memcpy(n->di_extb, o->di_extb, (NXADDR + NDADDR + NIADDR) * 8);

}

void

ffs_csum_swap(struct csum *o, struct csum *n, int size)

{

        size_t 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]);

}

void

ffs_csumtotal_swap(struct csum_total *o, struct csum_total *n)

{

        n->cs_ndir = bswap64(o->cs_ndir);

        n->cs_nbfree = bswap64(o->cs_nbfree);

        n->cs_nifree = bswap64(o->cs_nifree);

        n->cs_nffree = bswap64(o->cs_nffree);

}

/*

 * Note that ffs_cg_swap may be called with o == n.

 */

void

ffs_cg_swap(struct cg *o, struct cg *n, struct fs *fs)

{

        int i;

        u_int32_t *n32, *o32;

        u_int16_t *n16, *o16;

        int32_t btotoff, boff, clustersumoff;

        n->cg_firstfield = bswap32(o->cg_firstfield);

        n->cg_magic = bswap32(o->cg_magic);

        n->cg_old_time = bswap32(o->cg_old_time);

        n->cg_cgx = bswap32(o->cg_cgx);

        n->cg_old_ncyl = bswap16(o->cg_old_ncyl);

        n->cg_old_niblk = bswap16(o->cg_old_niblk);

        n->cg_ndblk = bswap32(o->cg_ndblk);

        n->cg_cs.cs_ndir = bswap32(o->cg_cs.cs_ndir);

        n->cg_cs.cs_nbfree = bswap32(o->cg_cs.cs_nbfree);

        n->cg_cs.cs_nifree = bswap32(o->cg_cs.cs_nifree);

        n->cg_cs.cs_nffree = bswap32(o->cg_cs.cs_nffree);

        n->cg_rotor = bswap32(o->cg_rotor);

        n->cg_frotor = bswap32(o->cg_frotor);

        n->cg_irotor = bswap32(o->cg_irotor);

        for (i = 0; i < MAXFRAG; i++)

                n->cg_frsum[i] = bswap32(o->cg_frsum[i]);

        if ((fs->fs_magic != FS_UFS2_MAGIC) &&

                        (fs->fs_old_postblformat == FS_42POSTBLFMT)) { /* old format */

                struct ocg *on, *oo;

                int j;

                on = (struct ocg *)n;

                oo = (struct ocg *)o;

                for (i = 0; i < 32; i++) {

                        on->cg_btot[i] = bswap32(oo->cg_btot[i]);

                        for (j = 0; j < 8; j++)

                                on->cg_b[i][j] = bswap16(oo->cg_b[i][j]);

                }

                memmove(on->cg_iused, oo->cg_iused, 256);

                on->cg_magic = bswap32(oo->cg_magic);

        } else {  /* new format */

                n->cg_old_btotoff = bswap32(o->cg_old_btotoff);

                n->cg_old_boff = bswap32(o->cg_old_boff);

                n->cg_iusedoff = bswap32(o->cg_iusedoff);

                n->cg_freeoff = bswap32(o->cg_freeoff);

                n->cg_nextfreeoff = bswap32(o->cg_nextfreeoff);

                n->cg_clustersumoff = bswap32(o->cg_clustersumoff);

                n->cg_clusteroff = bswap32(o->cg_clusteroff);

                n->cg_nclusterblks = bswap32(o->cg_nclusterblks);

                n->cg_niblk = bswap32(o->cg_niblk);

                n->cg_initediblk = bswap32(o->cg_initediblk);

                n->cg_time = bswap64(o->cg_time);

                if (n->cg_magic == CG_MAGIC) {

                        btotoff = n->cg_old_btotoff;

                        boff = n->cg_old_boff;

                        clustersumoff = n->cg_clustersumoff;

                } else {

                        btotoff = bswap32(n->cg_old_btotoff);

                        boff = bswap32(n->cg_old_boff);

                        clustersumoff = bswap32(n->cg_clustersumoff);

                }

                n32 = (u_int32_t *)((u_int8_t *)n + clustersumoff);

                o32 = (u_int32_t *)((u_int8_t *)o + clustersumoff);

                for (i = 1; i < fs->fs_contigsumsize + 1; i++)

                        n32[i] = bswap32(o32[i]);

                if (fs->fs_magic == FS_UFS2_MAGIC)

                        return;

                n32 = (u_int32_t *)((u_int8_t *)n + btotoff);

                o32 = (u_int32_t *)((u_int8_t *)o + btotoff);

                n16 = (u_int16_t *)((u_int8_t *)n + boff);

                o16 = (u_int16_t *)((u_int8_t *)o + boff);

                for (i = 0; i < fs->fs_old_cpg; i++)

                        n32[i] = bswap32(o32[i]);

                for (i = 0; i < fs->fs_old_cpg * fs->fs_old_nrpos; i++)

                        n16[i] = bswap16(o16[i]);

        }

}