2 * GRUB -- GRand Unified Bootloader
3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 #define ZEC_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */
30 typedef struct zio_eck {
31 uint64_t zec_magic; /* for validation, endianness */
32 zio_cksum_t zec_cksum; /* 256-bit checksum */
36 * Gang block headers are self-checksumming and contain an array
39 #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE
40 #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \
41 sizeof(zio_eck_t)) / sizeof(blkptr_t))
42 #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \
44 (SPA_GBH_NBLKPTRS * sizeof(blkptr_t))) /\
47 #define ZIO_GET_IOSIZE(zio) \
48 (BP_IS_GANG((zio)->io_bp) ? \
49 SPA_GANGBLOCKSIZE : BP_GET_PSIZE((zio)->io_bp))
51 typedef struct zio_gbh {
52 blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS];
53 uint64_t zg_filler[SPA_GBH_FILLER];
58 ZIO_CHECKSUM_INHERIT = 0,
62 ZIO_CHECKSUM_GANG_HEADER,
64 ZIO_CHECKSUM_FLETCHER_2,
65 ZIO_CHECKSUM_FLETCHER_4,
68 ZIO_CHECKSUM_FUNCTIONS
71 #define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_2
72 #define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON
75 ZIO_COMPRESS_INHERIT = 0,
89 ZIO_COMPRESS_FUNCTIONS