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| /*
| * GRUB -- GRand Unified Bootloader
| * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
| *
| * SPDX-License-Identifier: GPL-2.0+
| */
| /*
| * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
| */
|
| #ifndef _ZIO_H
| #define _ZIO_H
|
| #include <zfs/spa.h>
|
| #define ZEC_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */
|
| typedef struct zio_eck {
| uint64_t zec_magic; /* for validation, endianness */
| zio_cksum_t zec_cksum; /* 256-bit checksum */
| } zio_eck_t;
|
| /*
| * Gang block headers are self-checksumming and contain an array
| * of block pointers.
| */
| #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE
| #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \
| sizeof(zio_eck_t)) / sizeof(blkptr_t))
| #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \
| sizeof(zio_eck_t) - \
| (SPA_GBH_NBLKPTRS * sizeof(blkptr_t))) /\
| sizeof(uint64_t))
|
| #define ZIO_GET_IOSIZE(zio) \
| (BP_IS_GANG((zio)->io_bp) ? \
| SPA_GANGBLOCKSIZE : BP_GET_PSIZE((zio)->io_bp))
|
| typedef struct zio_gbh {
| blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS];
| uint64_t zg_filler[SPA_GBH_FILLER];
| zio_eck_t zg_tail;
| } zio_gbh_phys_t;
|
| enum zio_checksum {
| ZIO_CHECKSUM_INHERIT = 0,
| ZIO_CHECKSUM_ON,
| ZIO_CHECKSUM_OFF,
| ZIO_CHECKSUM_LABEL,
| ZIO_CHECKSUM_GANG_HEADER,
| ZIO_CHECKSUM_ZILOG,
| ZIO_CHECKSUM_FLETCHER_2,
| ZIO_CHECKSUM_FLETCHER_4,
| ZIO_CHECKSUM_SHA256,
| ZIO_CHECKSUM_ZILOG2,
| ZIO_CHECKSUM_FUNCTIONS
| };
|
| #define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_2
| #define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON
|
| enum zio_compress {
| ZIO_COMPRESS_INHERIT = 0,
| ZIO_COMPRESS_ON,
| ZIO_COMPRESS_OFF,
| ZIO_COMPRESS_LZJB,
| ZIO_COMPRESS_EMPTY,
| ZIO_COMPRESS_GZIP1,
| ZIO_COMPRESS_GZIP2,
| ZIO_COMPRESS_GZIP3,
| ZIO_COMPRESS_GZIP4,
| ZIO_COMPRESS_GZIP5,
| ZIO_COMPRESS_GZIP6,
| ZIO_COMPRESS_GZIP7,
| ZIO_COMPRESS_GZIP8,
| ZIO_COMPRESS_GZIP9,
| ZIO_COMPRESS_FUNCTIONS
| };
|
| #endif /* _ZIO_H */
|
|
