mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-26 11:19:32 +03:00
73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
|
/*
|
||
|
|
* CDDL HEADER START
|
||
|
|
*
|
||
|
|
* The contents of this file are subject to the terms of the
|
||
|
|
* Common Development and Distribution License (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 2009 Sun Microsystems, Inc. All rights reserved.
|
||
|
|
* Use is subject to license terms.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _SPA_CHECKSUM_H
|
||
|
|
#define _SPA_CHECKSUM_H
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
|
||
|
|
*/
|
||
|
|
typedef struct zio_cksum {
|
||
|
|
uint64_t zc_word[4];
|
||
|
|
} zio_cksum_t;
|
||
|
|
|
||
|
|
#define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \
|
||
|
|
{ \
|
||
|
|
(zcp)->zc_word[0] = w0; \
|
||
|
|
(zcp)->zc_word[1] = w1; \
|
||
|
|
(zcp)->zc_word[2] = w2; \
|
||
|
|
(zcp)->zc_word[3] = w3; \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define ZIO_CHECKSUM_EQUAL(zc1, zc2) \
|
||
|
|
(0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \
|
||
|
|
((zc1).zc_word[1] - (zc2).zc_word[1]) | \
|
||
|
|
((zc1).zc_word[2] - (zc2).zc_word[2]) | \
|
||
|
|
((zc1).zc_word[3] - (zc2).zc_word[3])))
|
||
|
|
|
||
|
|
#define ZIO_CHECKSUM_IS_ZERO(zc) \
|
||
|
|
(0 == ((zc)->zc_word[0] | (zc)->zc_word[1] | \
|
||
|
|
(zc)->zc_word[2] | (zc)->zc_word[3]))
|
||
|
|
|
||
|
|
#define ZIO_CHECKSUM_BSWAP(zcp) \
|
||
|
|
{ \
|
||
|
|
(zcp)->zc_word[0] = BSWAP_64((zcp)->zc_word[0]); \
|
||
|
|
(zcp)->zc_word[1] = BSWAP_64((zcp)->zc_word[1]); \
|
||
|
|
(zcp)->zc_word[2] = BSWAP_64((zcp)->zc_word[2]); \
|
||
|
|
(zcp)->zc_word[3] = BSWAP_64((zcp)->zc_word[3]); \
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|