1 /* 2 * GRUB -- GRand Unified Bootloader 3 * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc. 4 * 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. 9 * 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. 14 * 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. 18 */ 19 /* 20 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 21 * Use is subject to license terms. 22 */ 23 #ifndef _FSYS_ZFS_H 24 #define _FSYS_ZFS_H 25 26 #ifdef FSYS_ZFS 27 28 #ifndef FSIMAGE 29 typedef unsigned long long uint64_t; 30 typedef unsigned int uint32_t; 31 typedef unsigned short uint16_t; 32 typedef unsigned char uint8_t; 33 typedef unsigned char uchar_t; 34 35 #if defined(_LP64) || defined(_I32LPx) 36 typedef unsigned long size_t; 37 #else 38 typedef unsigned int size_t; 39 #endif 40 #else 41 #include "fsi_zfs.h" 42 #endif /* !FSIMAGE */ 43 44 #include <zfs-include/zfs.h> 45 #include <zfs-include/dmu.h> 46 #include <zfs-include/spa.h> 47 #include <zfs-include/zio.h> 48 #include <zfs-include/zio_checksum.h> 49 #include <zfs-include/vdev_impl.h> 50 #include <zfs-include/zap_impl.h> 51 #include <zfs-include/zap_leaf.h> 52 #include <zfs-include/uberblock_impl.h> 53 #include <zfs-include/dnode.h> 54 #include <zfs-include/dsl_dir.h> 55 #include <zfs-include/zfs_acl.h> 56 #include <zfs-include/zfs_znode.h> 57 #include <zfs-include/dsl_dataset.h> 58 #include <zfs-include/zil.h> 59 #include <zfs-include/dmu_objset.h> 60 #include <zfs-include/sa_impl.h> 61 62 /* 63 * Global Memory addresses to store MOS and DNODE data 64 */ 65 #define MOS ((dnode_phys_t *)\ 66 (RAW_ADDR((mbi.mem_upper << 10) + 0x100000) - ZFS_SCRATCH_SIZE)) 67 #define DNODE (MOS+1) /* move sizeof(dnode_phys_t) bytes */ 68 #define ZFS_SCRATCH ((char *)(DNODE+1)) 69 70 /* 71 * Verify dnode type. 72 * Can only be used in functions returning non-0 for failure. 73 */ 74 #define VERIFY_DN_TYPE(dnp, type) \ 75 if (type && (dnp)->dn_type != type) { \ 76 return (ERR_FSYS_CORRUPT); \ 77 } 78 79 /* 80 * Verify object set type. 81 * Can only be used in functions returning 0 for failure. 82 */ 83 #define VERIFY_OS_TYPE(osp, type) \ 84 if (type && (osp)->os_type != type) { \ 85 errnum = ERR_FSYS_CORRUPT; \ 86 return (0); \ 87 } 88 89 #define ZPOOL_PROP_BOOTFS "bootfs" 90 91 /* General macros */ 92 #define BSWAP_8(x) ((x) & 0xff) 93 #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) 94 #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16)) 95 #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32)) 96 #define P2ROUNDUP(x, align) (-(-(x) & -(align))) 97 98 typedef struct uberblock uberblock_t; 99 100 /* 101 * Macros to get fields in a bp or DVA. 102 */ 103 #define P2PHASE(x, align) ((x) & ((align) - 1)) 104 #define DVA_OFFSET_TO_PHYS_SECTOR(offset) \ 105 ((offset + VDEV_LABEL_START_SIZE) >> SPA_MINBLOCKSHIFT) 106 107 /* 108 * return x rounded down to an align boundary 109 * eg, P2ALIGN(1200, 1024) == 1024 (1*align) 110 * eg, P2ALIGN(1024, 1024) == 1024 (1*align) 111 * eg, P2ALIGN(0x1234, 0x100) == 0x1200 (0x12*align) 112 * eg, P2ALIGN(0x5600, 0x100) == 0x5600 (0x56*align) 113 */ 114 #define P2ALIGN(x, align) ((x) & -(align)) 115 116 /* 117 * For nvlist manipulation. (from nvpair.h) 118 */ 119 #define NV_ENCODE_NATIVE 0 120 #define NV_ENCODE_XDR 1 121 #define HOST_ENDIAN 1 /* for x86 machine */ 122 #define DATA_TYPE_UINT64 8 123 #define DATA_TYPE_STRING 9 124 #define DATA_TYPE_NVLIST 19 125 #define DATA_TYPE_NVLIST_ARRAY 20 126 127 /* 128 * Decompression Entry - lzjb 129 */ 130 #ifndef NBBY 131 #define NBBY 8 132 #endif 133 134 typedef int zfs_decomp_func_t(void *s_start, void *d_start, size_t s_len, 135 size_t d_len); 136 typedef struct decomp_entry { 137 char *name; 138 zfs_decomp_func_t *decomp_func; 139 } decomp_entry_t; 140 141 /* 142 * FAT ZAP data structures 143 */ 144 #define ZFS_CRC64_POLY 0xC96C5795D7870F42ULL /* ECMA-182, reflected form */ 145 #define ZAP_HASH_IDX(hash, n) (((n) == 0) ? 0 : ((hash) >> (64 - (n)))) 146 #define CHAIN_END 0xffff /* end of the chunk chain */ 147 148 /* 149 * The amount of space within the chunk available for the array is: 150 * chunk size - space for type (1) - space for next pointer (2) 151 */ 152 #define ZAP_LEAF_ARRAY_BYTES (ZAP_LEAF_CHUNKSIZE - 3) 153 154 #define ZAP_LEAF_HASH_SHIFT(bs) (bs - 5) 155 #define ZAP_LEAF_HASH_NUMENTRIES(bs) (1 << ZAP_LEAF_HASH_SHIFT(bs)) 156 #define LEAF_HASH(bs, h) \ 157 ((ZAP_LEAF_HASH_NUMENTRIES(bs)-1) & \ 158 ((h) >> (64 - ZAP_LEAF_HASH_SHIFT(bs)-l->l_hdr.lh_prefix_len))) 159 160 /* 161 * The amount of space available for chunks is: 162 * block size shift - hash entry size (2) * number of hash 163 * entries - header space (2*chunksize) 164 */ 165 #define ZAP_LEAF_NUMCHUNKS(bs) \ 166 (((1<<bs) - 2*ZAP_LEAF_HASH_NUMENTRIES(bs)) / \ 167 ZAP_LEAF_CHUNKSIZE - 2) 168 169 /* 170 * The chunks start immediately after the hash table. The end of the 171 * hash table is at l_hash + HASH_NUMENTRIES, which we simply cast to a 172 * chunk_t. 173 */ 174 #define ZAP_LEAF_CHUNK(l, bs, idx) \ 175 ((zap_leaf_chunk_t *)(l->l_hash + ZAP_LEAF_HASH_NUMENTRIES(bs)))[idx] 176 #define ZAP_LEAF_ENTRY(l, bs, idx) (&ZAP_LEAF_CHUNK(l, bs, idx).l_entry) 177 178 extern void fletcher_2_native(const void *, uint64_t, zio_cksum_t *); 179 extern void fletcher_2_byteswap(const void *, uint64_t, zio_cksum_t *); 180 extern void fletcher_4_native(const void *, uint64_t, zio_cksum_t *); 181 extern void fletcher_4_byteswap(const void *, uint64_t, zio_cksum_t *); 182 extern void zio_checksum_SHA256(const void *, uint64_t, zio_cksum_t *); 183 extern int lzjb_decompress(void *, void *, size_t, size_t); 184 185 #endif /* FSYS_ZFS */ 186 187 #endif /* !_FSYS_ZFS_H */ 188