mirror_zfs/include/sys/zio_checksum.h
Matthew Ahrens 37f8a8835a Illumos 5746 - more checksumming in zfs send
5746 more checksumming in zfs send
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Bayard Bell <buffer.g.overflow@gmail.com>
Approved by: Albert Lee <trisk@omniti.com>

References:
  https://www.illumos.org/issues/5746
  https://github.com/illumos/illumos-gate/commit/98110f0
  https://github.com/zfsonlinux/zfs/issues/905

Porting notes:
- Minor conflicts due to:
  - https://github.com/zfsonlinux/zfs/commit/2024041
  - https://github.com/zfsonlinux/zfs/commit/044baf0
  - https://github.com/zfsonlinux/zfs/commit/88904bb
- Fix ISO C90 warnings (-Werror=declaration-after-statement)
  - arc_buf_t *abuf;
  - dmu_buf_t *bonus;
  - zio_cksum_t cksum_orig;
  - zio_cksum_t *cksump;
- Fix format '%llx' format specifier warning
- Align message in zstreamdump safe_malloc() with upstream

Ported-by: kernelOfTruth kerneloftruth@gmail.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3611
2015-12-30 14:24:14 -08:00

77 lines
2.2 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2014 by Delphix. 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_func_t(const void *, uint64_t, zio_cksum_t *);
/*
* Information about each checksum function.
*/
typedef const struct zio_checksum_info {
zio_checksum_func_t *ci_func[2]; /* checksum function per 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_func_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 */