diff options
Diffstat (limited to 'uts/common/fs/zfs/sys/zio_checksum.h')
| -rw-r--r-- | uts/common/fs/zfs/sys/zio_checksum.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/uts/common/fs/zfs/sys/zio_checksum.h b/uts/common/fs/zfs/sys/zio_checksum.h new file mode 100644 index 000000000000..0956c04ab1b4 --- /dev/null +++ b/uts/common/fs/zfs/sys/zio_checksum.h @@ -0,0 +1,75 @@ +/* + * 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + */ + +#ifndef _SYS_ZIO_CHECKSUM_H +#define _SYS_ZIO_CHECKSUM_H + +#include <sys/zio.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Signature for checksum functions. + */ +typedef void zio_checksum_t(const void *data, uint64_t size, zio_cksum_t *zcp); + +/* + * Information about each checksum function. + */ +typedef struct zio_checksum_info { + zio_checksum_t *ci_func[2]; /* checksum function for each byteorder */ + int ci_correctable; /* number of correctable bits */ + int ci_eck; /* uses zio embedded checksum? */ + int ci_dedup; /* strong enough for dedup? */ + char *ci_name; /* descriptive name */ +} zio_checksum_info_t; + +typedef struct zio_bad_cksum { + zio_cksum_t zbc_expected; + zio_cksum_t zbc_actual; + const char *zbc_checksum_name; + uint8_t zbc_byteswapped; + uint8_t zbc_injected; + uint8_t zbc_has_cksum; /* expected/actual valid */ +} zio_bad_cksum_t; + +extern zio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS]; + +/* + * Checksum routines. + */ +extern zio_checksum_t zio_checksum_SHA256; + +extern void zio_checksum_compute(zio_t *zio, enum zio_checksum checksum, + void *data, uint64_t size); +extern int zio_checksum_error(zio_t *zio, zio_bad_cksum_t *out); +extern enum zio_checksum spa_dedup_checksum(spa_t *spa); + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_ZIO_CHECKSUM_H */ |