0144ad3e78
Support for the new hashing algorithms in ZFS was introduced in r289422 However it was disconnected because FreeBSD lacked implementations of SHA-512 (truncated to 256 bits), and Skein. These implementations were introduced in r300921 and r300966 respectively This commit connects them to ZFS and enabled these new checksum algorithms This new algorithms are not supported by the boot blocks, so do not use them on your root dataset if you boot from ZFS. Relnotes: yes Sponsored by: ScaleEngine Inc.
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Copyright 2013 Saso Kiselkov. All rights reserved.
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*/
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#include <sys/zfs_context.h>
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#include <sys/zio.h>
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#ifdef _KERNEL
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#include <crypto/sha2/sha256.h>
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#include <crypto/sha2/sha512t.h>
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#else
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#include <sha256.h>
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#include <sha512t.h>
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#endif
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/*ARGSUSED*/
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void
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zio_checksum_SHA256(const void *buf, uint64_t size,
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const void *ctx_template, zio_cksum_t *zcp)
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{
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SHA256_CTX ctx;
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zio_cksum_t tmp;
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SHA256_Init(&ctx);
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SHA256_Update(&ctx, buf, size);
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SHA256_Final((unsigned char *)&tmp, &ctx);
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/*
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* A prior implementation of this function had a
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* private SHA256 implementation always wrote things out in
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* Big Endian and there wasn't a byteswap variant of it.
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* To preseve on disk compatibility we need to force that
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* behaviour.
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*/
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zcp->zc_word[0] = BE_64(tmp.zc_word[0]);
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zcp->zc_word[1] = BE_64(tmp.zc_word[1]);
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zcp->zc_word[2] = BE_64(tmp.zc_word[2]);
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zcp->zc_word[3] = BE_64(tmp.zc_word[3]);
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}
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/*ARGSUSED*/
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void
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zio_checksum_SHA512_native(const void *buf, uint64_t size,
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const void *ctx_template, zio_cksum_t *zcp)
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{
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SHA512_CTX ctx;
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SHA512_256_Init(&ctx);
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SHA512_256_Update(&ctx, buf, size);
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SHA512_256_Final((unsigned char *)zcp, &ctx);
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}
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/*ARGSUSED*/
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void
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zio_checksum_SHA512_byteswap(const void *buf, uint64_t size,
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const void *ctx_template, zio_cksum_t *zcp)
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{
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zio_cksum_t tmp;
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zio_checksum_SHA512_native(buf, size, ctx_template, &tmp);
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zcp->zc_word[0] = BSWAP_64(tmp.zc_word[0]);
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zcp->zc_word[1] = BSWAP_64(tmp.zc_word[1]);
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zcp->zc_word[2] = BSWAP_64(tmp.zc_word[2]);
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zcp->zc_word[3] = BSWAP_64(tmp.zc_word[3]);
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}
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