1b1b8ab34Slling /* 2b1b8ab34Slling * GRUB -- GRand Unified Bootloader 3b1b8ab34Slling * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. 4b1b8ab34Slling * 5b1b8ab34Slling * This program is free software; you can redistribute it and/or modify 6b1b8ab34Slling * it under the terms of the GNU General Public License as published by 7b1b8ab34Slling * the Free Software Foundation; either version 2 of the License, or 8b1b8ab34Slling * (at your option) any later version. 9b1b8ab34Slling * 10b1b8ab34Slling * This program is distributed in the hope that it will be useful, 11b1b8ab34Slling * but WITHOUT ANY WARRANTY; without even the implied warranty of 12b1b8ab34Slling * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13b1b8ab34Slling * GNU General Public License for more details. 14b1b8ab34Slling * 15b1b8ab34Slling * You should have received a copy of the GNU General Public License 16b1b8ab34Slling * along with this program; if not, write to the Free Software 17b1b8ab34Slling * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18b1b8ab34Slling */ 19b1b8ab34Slling /* 206e1f5caaSNeil Perrin * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 21b1b8ab34Slling * Use is subject to license terms. 22b1b8ab34Slling */ 23a6f561b4SSašo Kiselkov /* 24a6f561b4SSašo Kiselkov * Copyright 2013 by Saso Kiselkov. All rights reserved. 25a6f561b4SSašo Kiselkov */ 26b1b8ab34Slling 27b1b8ab34Slling #ifndef _ZIO_H 28b1b8ab34Slling #define _ZIO_H 29b1b8ab34Slling 306e1f5caaSNeil Perrin #define ZEC_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */ 31b1b8ab34Slling 326e1f5caaSNeil Perrin typedef struct zio_eck { 336e1f5caaSNeil Perrin uint64_t zec_magic; /* for validation, endianness */ 346e1f5caaSNeil Perrin zio_cksum_t zec_cksum; /* 256-bit checksum */ 356e1f5caaSNeil Perrin } zio_eck_t; 36b1b8ab34Slling 37b1b8ab34Slling /* 38b1b8ab34Slling * Gang block headers are self-checksumming and contain an array 39b1b8ab34Slling * of block pointers. 40b1b8ab34Slling */ 41b1b8ab34Slling #define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE 42b1b8ab34Slling #define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \ 436e1f5caaSNeil Perrin sizeof (zio_eck_t)) / sizeof (blkptr_t)) 44b1b8ab34Slling #define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \ 456e1f5caaSNeil Perrin sizeof (zio_eck_t) - \ 46b1b8ab34Slling (SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\ 47b1b8ab34Slling sizeof (uint64_t)) 48b1b8ab34Slling 49b1b8ab34Slling #define ZIO_GET_IOSIZE(zio) \ 50b1b8ab34Slling (BP_IS_GANG((zio)->io_bp) ? \ 51b1b8ab34Slling SPA_GANGBLOCKSIZE : BP_GET_PSIZE((zio)->io_bp)) 52b1b8ab34Slling 53b1b8ab34Slling typedef struct zio_gbh { 54b1b8ab34Slling blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS]; 55b1b8ab34Slling uint64_t zg_filler[SPA_GBH_FILLER]; 566e1f5caaSNeil Perrin zio_eck_t zg_tail; 57b1b8ab34Slling } zio_gbh_phys_t; 58b1b8ab34Slling 59b1b8ab34Slling enum zio_checksum { 60b1b8ab34Slling ZIO_CHECKSUM_INHERIT = 0, 61b1b8ab34Slling ZIO_CHECKSUM_ON, 62b1b8ab34Slling ZIO_CHECKSUM_OFF, 63b1b8ab34Slling ZIO_CHECKSUM_LABEL, 64b1b8ab34Slling ZIO_CHECKSUM_GANG_HEADER, 65b1b8ab34Slling ZIO_CHECKSUM_ZILOG, 66b1b8ab34Slling ZIO_CHECKSUM_FLETCHER_2, 67b1b8ab34Slling ZIO_CHECKSUM_FLETCHER_4, 68b1b8ab34Slling ZIO_CHECKSUM_SHA256, 696e1f5caaSNeil Perrin ZIO_CHECKSUM_ZILOG2, 70*45818ee1SMatthew Ahrens ZIO_CHECKSUM_NOPARITY, 71*45818ee1SMatthew Ahrens ZIO_CHECKSUM_SHA512, 72*45818ee1SMatthew Ahrens ZIO_CHECKSUM_SKEIN, 73*45818ee1SMatthew Ahrens ZIO_CHECKSUM_EDONR, 74b1b8ab34Slling ZIO_CHECKSUM_FUNCTIONS 75b1b8ab34Slling }; 76b1b8ab34Slling 77b1b8ab34Slling enum zio_compress { 78b1b8ab34Slling ZIO_COMPRESS_INHERIT = 0, 79b1b8ab34Slling ZIO_COMPRESS_ON, 80b1b8ab34Slling ZIO_COMPRESS_OFF, 81b1b8ab34Slling ZIO_COMPRESS_LZJB, 82b1b8ab34Slling ZIO_COMPRESS_EMPTY, 83a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_1, 84a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_2, 85a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_3, 86a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_4, 87a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_5, 88a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_6, 89a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_7, 90a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_8, 91a6f561b4SSašo Kiselkov ZIO_COMPRESS_GZIP_9, 92a6f561b4SSašo Kiselkov ZIO_COMPRESS_ZLE, 93a6f561b4SSašo Kiselkov ZIO_COMPRESS_LZ4, 94b1b8ab34Slling ZIO_COMPRESS_FUNCTIONS 95b1b8ab34Slling }; 96b1b8ab34Slling 97b1b8ab34Slling #endif /* _ZIO_H */ 98