Mercurial > illumos > illumos-gate
view usr/src/grub/grub-0.95/stage2/zfs-include/zio.h @ 3912:f6891a60bd72
PSARC 2007/083 ZFS bootable datasets
4929890 ZFS Boot support for the x86 platform
6479807 pools need properties
6531774 reserve bits in directory entry for file type
author | lling |
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date | Wed, 28 Mar 2007 12:48:13 -0700 |
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/* * GRUB -- GRand Unified Bootloader * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * Copyright 2007 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _ZIO_H #define _ZIO_H #pragma ident "%Z%%M% %I% %E% SMI" #define ZBT_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */ typedef struct zio_block_tail { uint64_t zbt_magic; /* for validation, endianness */ zio_cksum_t zbt_cksum; /* 256-bit checksum */ } zio_block_tail_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_block_tail_t)) / sizeof (blkptr_t)) #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \ sizeof (zio_block_tail_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_block_tail_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_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_FUNCTIONS }; #endif /* _ZIO_H */