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 /* 20*6e1f5caaSNeil Perrin * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 21b1b8ab34Slling * Use is subject to license terms. 22b1b8ab34Slling */ 23b1b8ab34Slling #ifndef _FSYS_ZFS_H 24b1b8ab34Slling #define _FSYS_ZFS_H 25b1b8ab34Slling 26b1b8ab34Slling #ifdef FSYS_ZFS 27b1b8ab34Slling 28b1b8ab34Slling typedef unsigned long long uint64_t; 29b1b8ab34Slling typedef unsigned int uint32_t; 30b1b8ab34Slling typedef unsigned short uint16_t; 31b1b8ab34Slling typedef unsigned char uint8_t; 32b1b8ab34Slling typedef unsigned char uchar_t; 33b1b8ab34Slling 34b1b8ab34Slling #if defined(_LP64) || defined(_I32LPx) 35b1b8ab34Slling typedef unsigned long size_t; 36b1b8ab34Slling #else 37b1b8ab34Slling typedef unsigned int size_t; 38b1b8ab34Slling #endif 39b1b8ab34Slling 40b1b8ab34Slling #include <zfs-include/zfs.h> 41b1b8ab34Slling #include <zfs-include/dmu.h> 42b1b8ab34Slling #include <zfs-include/spa.h> 43b1b8ab34Slling #include <zfs-include/zio.h> 44b1b8ab34Slling #include <zfs-include/zio_checksum.h> 45b1b8ab34Slling #include <zfs-include/vdev_impl.h> 46b1b8ab34Slling #include <zfs-include/zap_impl.h> 47b1b8ab34Slling #include <zfs-include/zap_leaf.h> 48b1b8ab34Slling #include <zfs-include/uberblock_impl.h> 49b1b8ab34Slling #include <zfs-include/dnode.h> 50b1b8ab34Slling #include <zfs-include/dsl_dir.h> 51b1b8ab34Slling #include <zfs-include/zfs_acl.h> 52b1b8ab34Slling #include <zfs-include/zfs_znode.h> 53b1b8ab34Slling #include <zfs-include/dsl_dataset.h> 54b1b8ab34Slling #include <zfs-include/zil.h> 55b1b8ab34Slling #include <zfs-include/dmu_objset.h> 56b1b8ab34Slling 57b1b8ab34Slling /* 58b1b8ab34Slling * Global Memory addresses to store MOS and DNODE data 59b1b8ab34Slling */ 60843e1988Sjohnlev #define MOS ((dnode_phys_t *)\ 61bc896b5aSjohnlev (RAW_ADDR((mbi.mem_upper << 10) + 0x100000) - ZFS_SCRATCH_SIZE)) 62ae8180dbSlling #define DNODE (MOS+1) /* move sizeof(dnode_phys_t) bytes */ 63ae8180dbSlling #define ZFS_SCRATCH ((char *)(DNODE+1)) 64b1b8ab34Slling 65b1b8ab34Slling /* 66b1b8ab34Slling * Verify dnode type. 67b1b8ab34Slling * Can only be used in functions returning non-0 for failure. 68b1b8ab34Slling */ 69b1b8ab34Slling #define VERIFY_DN_TYPE(dnp, type) \ 70b1b8ab34Slling if (type && (dnp)->dn_type != type) { \ 71b1b8ab34Slling return (ERR_FSYS_CORRUPT); \ 72b1b8ab34Slling } 73b1b8ab34Slling 74b1b8ab34Slling /* 75b1b8ab34Slling * Verify object set type. 76b1b8ab34Slling * Can only be used in functions returning 0 for failure. 77b1b8ab34Slling */ 78b1b8ab34Slling #define VERIFY_OS_TYPE(osp, type) \ 79b1b8ab34Slling if (type && (osp)->os_type != type) { \ 80b1b8ab34Slling errnum = ERR_FSYS_CORRUPT; \ 81b1b8ab34Slling return (0); \ 82b1b8ab34Slling } 83b1b8ab34Slling 84b1b8ab34Slling #define ZPOOL_PROP_BOOTFS "bootfs" 85b1b8ab34Slling 86b1b8ab34Slling /* General macros */ 87b1b8ab34Slling #define BSWAP_8(x) ((x) & 0xff) 88b1b8ab34Slling #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) 89b1b8ab34Slling #define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16)) 90b1b8ab34Slling #define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32)) 91b1b8ab34Slling #define P2ROUNDUP(x, align) (-(-(x) & -(align))) 92b1b8ab34Slling 93b1b8ab34Slling /* 94b1b8ab34Slling * XXX Match these macro up with real zfs once we have nvlist support so that we 95b1b8ab34Slling * can support large sector disks. 96b1b8ab34Slling */ 97b1b8ab34Slling #define UBERBLOCK_SIZE (1ULL << UBERBLOCK_SHIFT) 98b1b8ab34Slling #undef offsetof 99b1b8ab34Slling #define offsetof(t, m) ((int)&(((t *)0)->m)) 100b1b8ab34Slling #define VDEV_UBERBLOCK_SHIFT UBERBLOCK_SHIFT 101b1b8ab34Slling #define VDEV_UBERBLOCK_OFFSET(n) \ 102b1b8ab34Slling offsetof(vdev_label_t, vl_uberblock[(n) << VDEV_UBERBLOCK_SHIFT]) 103b1b8ab34Slling 104b1b8ab34Slling typedef struct uberblock uberblock_t; 105b1b8ab34Slling 106b1b8ab34Slling /* XXX Uberblock_phys_t is no longer in the kernel zfs */ 107b1b8ab34Slling typedef struct uberblock_phys { 108b1b8ab34Slling uberblock_t ubp_uberblock; 109b1b8ab34Slling char ubp_pad[UBERBLOCK_SIZE - sizeof (uberblock_t) - 110*6e1f5caaSNeil Perrin sizeof (zio_eck_t)]; 111*6e1f5caaSNeil Perrin zio_eck_t ubp_zec; 112b1b8ab34Slling } uberblock_phys_t; 113b1b8ab34Slling 114b1b8ab34Slling /* 115b1b8ab34Slling * Macros to get fields in a bp or DVA. 116b1b8ab34Slling */ 117b1b8ab34Slling #define P2PHASE(x, align) ((x) & ((align) - 1)) 118b1b8ab34Slling #define DVA_OFFSET_TO_PHYS_SECTOR(offset) \ 119b1b8ab34Slling ((offset + VDEV_LABEL_START_SIZE) >> SPA_MINBLOCKSHIFT) 120b1b8ab34Slling 121e23347b1SEric Taylor /* 122e23347b1SEric Taylor * return x rounded down to an align boundary 123e23347b1SEric Taylor * eg, P2ALIGN(1200, 1024) == 1024 (1*align) 124e23347b1SEric Taylor * eg, P2ALIGN(1024, 1024) == 1024 (1*align) 125e23347b1SEric Taylor * eg, P2ALIGN(0x1234, 0x100) == 0x1200 (0x12*align) 126e23347b1SEric Taylor * eg, P2ALIGN(0x5600, 0x100) == 0x5600 (0x56*align) 127e23347b1SEric Taylor */ 128e23347b1SEric Taylor #define P2ALIGN(x, align) ((x) & -(align)) 129e23347b1SEric Taylor 130b1b8ab34Slling /* 131b1b8ab34Slling * For nvlist manipulation. (from nvpair.h) 132b1b8ab34Slling */ 133b1b8ab34Slling #define NV_ENCODE_NATIVE 0 134b1b8ab34Slling #define NV_ENCODE_XDR 1 135b1b8ab34Slling #define HOST_ENDIAN 1 /* for x86 machine */ 136b1b8ab34Slling #define DATA_TYPE_UINT64 8 137b1b8ab34Slling #define DATA_TYPE_STRING 9 138e7cbe64fSgw #define DATA_TYPE_NVLIST 19 139e7cbe64fSgw #define DATA_TYPE_NVLIST_ARRAY 20 140b1b8ab34Slling 141b1b8ab34Slling /* 142b1b8ab34Slling * Decompression Entry - lzjb 143b1b8ab34Slling */ 144b1b8ab34Slling #ifndef NBBY 145b1b8ab34Slling #define NBBY 8 146b1b8ab34Slling #endif 147b1b8ab34Slling 148b1b8ab34Slling typedef int zfs_decomp_func_t(void *s_start, void *d_start, size_t s_len, 149b1b8ab34Slling size_t d_len); 150b1b8ab34Slling typedef struct decomp_entry { 151b1b8ab34Slling char *name; 152b1b8ab34Slling zfs_decomp_func_t *decomp_func; 153b1b8ab34Slling } decomp_entry_t; 154b1b8ab34Slling 155b1b8ab34Slling /* 156b1b8ab34Slling * FAT ZAP data structures 157b1b8ab34Slling */ 158b1b8ab34Slling #define ZFS_CRC64_POLY 0xC96C5795D7870F42ULL /* ECMA-182, reflected form */ 159b1b8ab34Slling #define ZAP_HASH_IDX(hash, n) (((n) == 0) ? 0 : ((hash) >> (64 - (n)))) 160b1b8ab34Slling #define CHAIN_END 0xffff /* end of the chunk chain */ 161b1b8ab34Slling 162b1b8ab34Slling /* 163b1b8ab34Slling * The amount of space within the chunk available for the array is: 164b1b8ab34Slling * chunk size - space for type (1) - space for next pointer (2) 165b1b8ab34Slling */ 166b1b8ab34Slling #define ZAP_LEAF_ARRAY_BYTES (ZAP_LEAF_CHUNKSIZE - 3) 167b1b8ab34Slling 168b1b8ab34Slling #define ZAP_LEAF_HASH_SHIFT(bs) (bs - 5) 169b1b8ab34Slling #define ZAP_LEAF_HASH_NUMENTRIES(bs) (1 << ZAP_LEAF_HASH_SHIFT(bs)) 170b1b8ab34Slling #define LEAF_HASH(bs, h) \ 171b1b8ab34Slling ((ZAP_LEAF_HASH_NUMENTRIES(bs)-1) & \ 172b1b8ab34Slling ((h) >> (64 - ZAP_LEAF_HASH_SHIFT(bs)-l->l_hdr.lh_prefix_len))) 173b1b8ab34Slling 174b1b8ab34Slling /* 175b1b8ab34Slling * The amount of space available for chunks is: 176b1b8ab34Slling * block size shift - hash entry size (2) * number of hash 177b1b8ab34Slling * entries - header space (2*chunksize) 178b1b8ab34Slling */ 179b1b8ab34Slling #define ZAP_LEAF_NUMCHUNKS(bs) \ 180b1b8ab34Slling (((1<<bs) - 2*ZAP_LEAF_HASH_NUMENTRIES(bs)) / \ 181b1b8ab34Slling ZAP_LEAF_CHUNKSIZE - 2) 182b1b8ab34Slling 183b1b8ab34Slling /* 184b1b8ab34Slling * The chunks start immediately after the hash table. The end of the 185b1b8ab34Slling * hash table is at l_hash + HASH_NUMENTRIES, which we simply cast to a 186b1b8ab34Slling * chunk_t. 187b1b8ab34Slling */ 188b1b8ab34Slling #define ZAP_LEAF_CHUNK(l, bs, idx) \ 189b1b8ab34Slling ((zap_leaf_chunk_t *)(l->l_hash + ZAP_LEAF_HASH_NUMENTRIES(bs)))[idx] 190b1b8ab34Slling #define ZAP_LEAF_ENTRY(l, bs, idx) (&ZAP_LEAF_CHUNK(l, bs, idx).l_entry) 191b1b8ab34Slling 192b1b8ab34Slling extern void fletcher_2_native(const void *, uint64_t, zio_cksum_t *); 193b1b8ab34Slling extern void fletcher_2_byteswap(const void *, uint64_t, zio_cksum_t *); 194b1b8ab34Slling extern void fletcher_4_native(const void *, uint64_t, zio_cksum_t *); 195b1b8ab34Slling extern void fletcher_4_byteswap(const void *, uint64_t, zio_cksum_t *); 196b1b8ab34Slling extern void zio_checksum_SHA256(const void *, uint64_t, zio_cksum_t *); 197b1b8ab34Slling extern int lzjb_decompress(void *, void *, size_t, size_t); 198b1b8ab34Slling 199b1b8ab34Slling #endif /* FSYS_ZFS */ 200b1b8ab34Slling 201b1b8ab34Slling #endif /* !_FSYS_ZFS_H */ 202