fs/zfs/zfs_byteswap.c

	zfs_byteswap.c revision fa9e4066f08beec538e775443c5be79dd423fcab
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <sys/zfs_context.h>
#include <sys/vfs.h>
#include <sys/fs/zfs.h>
#include <sys/zfs_znode.h>
#include <sys/zfs_acl.h>

void
zfs_ace_byteswap(ace_t *ace, int ace_cnt)
{
    int i;

    for (i = 0; i != ace_cnt; i++, ace++) {
        ace->a_who = BSWAP_32(ace->a_who);
        ace->a_access_mask = BSWAP_32(ace->a_access_mask);
        ace->a_flags = BSWAP_16(ace->a_flags);
        ace->a_type = BSWAP_16(ace->a_type);
    }
}

/* ARGSUSED */
void
zfs_acl_byteswap(void *buf, size_t size)
{
    int cnt;

    /*
     * Arggh, since we don't know how many ACEs are in
     * the array, we have to swap the entire block
     */

    cnt = size / sizeof (ace_t);

    zfs_ace_byteswap((ace_t *)buf, cnt);
}

void
zfs_znode_byteswap(void *buf, size_t size)
{
    znode_phys_t *zp = buf;

    ASSERT(size >= sizeof (znode_phys_t));

    zp->zp_crtime[0] = BSWAP_64(zp->zp_crtime[0]);
    zp->zp_crtime[1] = BSWAP_64(zp->zp_crtime[1]);
    zp->zp_atime[0] = BSWAP_64(zp->zp_atime[0]);
    zp->zp_atime[1] = BSWAP_64(zp->zp_atime[1]);
    zp->zp_mtime[0] = BSWAP_64(zp->zp_mtime[0]);
    zp->zp_mtime[1] = BSWAP_64(zp->zp_mtime[1]);
    zp->zp_ctime[0] = BSWAP_64(zp->zp_ctime[0]);
    zp->zp_ctime[1] = BSWAP_64(zp->zp_ctime[1]);
    zp->zp_gen = BSWAP_64(zp->zp_gen);
    zp->zp_mode = BSWAP_64(zp->zp_mode);
    zp->zp_size = BSWAP_64(zp->zp_size);
    zp->zp_parent = BSWAP_64(zp->zp_parent);
    zp->zp_links = BSWAP_64(zp->zp_links);
    zp->zp_xattr = BSWAP_64(zp->zp_xattr);
    zp->zp_rdev = BSWAP_64(zp->zp_rdev);
    zp->zp_flags = BSWAP_64(zp->zp_flags);
    zp->zp_uid = BSWAP_64(zp->zp_uid);
    zp->zp_gid = BSWAP_64(zp->zp_gid);
    zp->zp_pad[0] = BSWAP_64(zp->zp_pad[0]);
    zp->zp_pad[1] = BSWAP_64(zp->zp_pad[1]);
    zp->zp_pad[2] = BSWAP_64(zp->zp_pad[2]);
    zp->zp_pad[3] = BSWAP_64(zp->zp_pad[3]);

    zp->zp_acl.z_acl_extern_obj = BSWAP_64(zp->zp_acl.z_acl_extern_obj);
    zp->zp_acl.z_acl_count = BSWAP_32(zp->zp_acl.z_acl_count);
    zp->zp_acl.z_acl_version = BSWAP_16(zp->zp_acl.z_acl_version);
    zp->zp_acl.z_acl_state = BSWAP_16(zp->zp_acl.z_acl_state);
    zfs_ace_byteswap(&zp->zp_acl.z_ace_data[0], ACE_SLOT_CNT);
}