Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000,2002-2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | #ifndef __XFS_BMAP_BTREE_H__ |
| 19 | #define __XFS_BMAP_BTREE_H__ |
| 20 | |
| 21 | #define XFS_BMAP_MAGIC 0x424d4150 /* 'BMAP' */ |
| 22 | |
| 23 | struct xfs_btree_cur; |
| 24 | struct xfs_btree_lblock; |
| 25 | struct xfs_mount; |
| 26 | struct xfs_inode; |
| 27 | |
| 28 | /* |
| 29 | * Bmap root header, on-disk form only. |
| 30 | */ |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 31 | typedef struct xfs_bmdr_block { |
| 32 | __be16 bb_level; /* 0 is a leaf */ |
| 33 | __be16 bb_numrecs; /* current # of data records */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | } xfs_bmdr_block_t; |
| 35 | |
| 36 | /* |
| 37 | * Bmap btree record and extent descriptor. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | * l0:63 is an extent flag (value 1 indicates non-normal). |
| 39 | * l0:9-62 are startoff. |
| 40 | * l0:0-8 and l1:21-63 are startblock. |
| 41 | * l1:0-20 are blockcount. |
| 42 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #define BMBT_EXNTFLAG_BITLEN 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #define BMBT_STARTOFF_BITLEN 54 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #define BMBT_STARTBLOCK_BITLEN 52 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #define BMBT_BLOCKCOUNT_BITLEN 21 |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | #define BMBT_USE_64 1 |
| 50 | |
| 51 | typedef struct xfs_bmbt_rec_32 |
| 52 | { |
| 53 | __uint32_t l0, l1, l2, l3; |
| 54 | } xfs_bmbt_rec_32_t; |
| 55 | typedef struct xfs_bmbt_rec_64 |
| 56 | { |
Christoph Hellwig | cd8b0a9 | 2007-08-16 16:24:15 +1000 | [diff] [blame^] | 57 | __be64 l0, l1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | } xfs_bmbt_rec_64_t; |
| 59 | |
| 60 | typedef __uint64_t xfs_bmbt_rec_base_t; /* use this for casts */ |
| 61 | typedef xfs_bmbt_rec_64_t xfs_bmbt_rec_t, xfs_bmdr_rec_t; |
| 62 | |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 63 | typedef struct xfs_bmbt_rec_host { |
| 64 | __uint64_t l0, l1; |
| 65 | } xfs_bmbt_rec_host_t; |
| 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | /* |
| 68 | * Values and macros for delayed-allocation startblock fields. |
| 69 | */ |
| 70 | #define STARTBLOCKVALBITS 17 |
| 71 | #define STARTBLOCKMASKBITS (15 + XFS_BIG_BLKNOS * 20) |
| 72 | #define DSTARTBLOCKMASKBITS (15 + 20) |
| 73 | #define STARTBLOCKMASK \ |
| 74 | (((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS) |
| 75 | #define DSTARTBLOCKMASK \ |
| 76 | (((((xfs_dfsbno_t)1) << DSTARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS) |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 77 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | #define ISNULLSTARTBLOCK(x) isnullstartblock(x) |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 79 | static inline int isnullstartblock(xfs_fsblock_t x) |
| 80 | { |
| 81 | return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK; |
| 82 | } |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | #define ISNULLDSTARTBLOCK(x) isnulldstartblock(x) |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 85 | static inline int isnulldstartblock(xfs_dfsbno_t x) |
| 86 | { |
| 87 | return ((x) & DSTARTBLOCKMASK) == DSTARTBLOCKMASK; |
| 88 | } |
| 89 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | #define NULLSTARTBLOCK(k) nullstartblock(k) |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 91 | static inline xfs_fsblock_t nullstartblock(int k) |
| 92 | { |
| 93 | ASSERT(k < (1 << STARTBLOCKVALBITS)); |
| 94 | return STARTBLOCKMASK | (k); |
| 95 | } |
| 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | #define STARTBLOCKVAL(x) startblockval(x) |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 98 | static inline xfs_filblks_t startblockval(xfs_fsblock_t x) |
| 99 | { |
| 100 | return (xfs_filblks_t)((x) & ~STARTBLOCKMASK); |
| 101 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | /* |
| 104 | * Possible extent formats. |
| 105 | */ |
| 106 | typedef enum { |
| 107 | XFS_EXTFMT_NOSTATE = 0, |
| 108 | XFS_EXTFMT_HASSTATE |
| 109 | } xfs_exntfmt_t; |
| 110 | |
| 111 | /* |
| 112 | * Possible extent states. |
| 113 | */ |
| 114 | typedef enum { |
| 115 | XFS_EXT_NORM, XFS_EXT_UNWRITTEN, |
| 116 | XFS_EXT_DMAPI_OFFLINE, XFS_EXT_INVALID |
| 117 | } xfs_exntst_t; |
| 118 | |
| 119 | /* |
| 120 | * Extent state and extent format macros. |
| 121 | */ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 122 | #define XFS_EXTFMT_INODE(x) \ |
| 123 | (XFS_SB_VERSION_HASEXTFLGBIT(&((x)->i_mount->m_sb)) ? \ |
| 124 | XFS_EXTFMT_HASSTATE : XFS_EXTFMT_NOSTATE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | #define ISUNWRITTEN(x) ((x)->br_state == XFS_EXT_UNWRITTEN) |
| 126 | |
| 127 | /* |
| 128 | * Incore version of above. |
| 129 | */ |
| 130 | typedef struct xfs_bmbt_irec |
| 131 | { |
| 132 | xfs_fileoff_t br_startoff; /* starting file offset */ |
| 133 | xfs_fsblock_t br_startblock; /* starting block number */ |
| 134 | xfs_filblks_t br_blockcount; /* number of blocks */ |
| 135 | xfs_exntst_t br_state; /* extent state */ |
| 136 | } xfs_bmbt_irec_t; |
| 137 | |
| 138 | /* |
| 139 | * Key structure for non-leaf levels of the tree. |
| 140 | */ |
Christoph Hellwig | 8801bb9 | 2006-09-28 10:58:17 +1000 | [diff] [blame] | 141 | typedef struct xfs_bmbt_key { |
| 142 | __be64 br_startoff; /* starting file offset */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | } xfs_bmbt_key_t, xfs_bmdr_key_t; |
| 144 | |
Christoph Hellwig | 397b520 | 2006-09-28 10:57:52 +1000 | [diff] [blame] | 145 | /* btree pointer type */ |
| 146 | typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t; |
| 147 | |
| 148 | /* btree block header type */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | typedef struct xfs_btree_lblock xfs_bmbt_block_t; |
| 150 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 151 | #define XFS_BUF_TO_BMBT_BLOCK(bp) ((xfs_bmbt_block_t *)XFS_BUF_PTR(bp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 153 | #define XFS_BMAP_RBLOCK_DSIZE(lev,cur) ((cur)->bc_private.b.forksize) |
| 154 | #define XFS_BMAP_RBLOCK_ISIZE(lev,cur) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | ((int)XFS_IFORK_PTR((cur)->bc_private.b.ip, \ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 156 | (cur)->bc_private.b.whichfork)->if_broot_bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | #define XFS_BMAP_BLOCK_DMAXRECS(lev,cur) \ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 159 | (((lev) == (cur)->bc_nlevels - 1 ? \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur), \ |
| 161 | xfs_bmdr, (lev) == 0) : \ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 162 | ((cur)->bc_mp->m_bmap_dmxr[(lev) != 0]))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | #define XFS_BMAP_BLOCK_IMAXRECS(lev,cur) \ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 164 | (((lev) == (cur)->bc_nlevels - 1 ? \ |
| 165 | XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur),\ |
| 166 | xfs_bmbt, (lev) == 0) : \ |
| 167 | ((cur)->bc_mp->m_bmap_dmxr[(lev) != 0]))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | #define XFS_BMAP_BLOCK_DMINRECS(lev,cur) \ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 170 | (((lev) == (cur)->bc_nlevels - 1 ? \ |
| 171 | XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur),\ |
| 172 | xfs_bmdr, (lev) == 0) : \ |
| 173 | ((cur)->bc_mp->m_bmap_dmnr[(lev) != 0]))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | #define XFS_BMAP_BLOCK_IMINRECS(lev,cur) \ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 175 | (((lev) == (cur)->bc_nlevels - 1 ? \ |
| 176 | XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur),\ |
| 177 | xfs_bmbt, (lev) == 0) : \ |
| 178 | ((cur)->bc_mp->m_bmap_dmnr[(lev) != 0]))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 180 | #define XFS_BMAP_REC_DADDR(bb,i,cur) (XFS_BTREE_REC_ADDR(xfs_bmbt, bb, i)) |
| 181 | |
| 182 | #define XFS_BMAP_REC_IADDR(bb,i,cur) (XFS_BTREE_REC_ADDR(xfs_bmbt, bb, i)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 184 | #define XFS_BMAP_KEY_DADDR(bb,i,cur) \ |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 185 | (XFS_BTREE_KEY_ADDR(xfs_bmbt, bb, i)) |
| 186 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 187 | #define XFS_BMAP_KEY_IADDR(bb,i,cur) \ |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 188 | (XFS_BTREE_KEY_ADDR(xfs_bmbt, bb, i)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 190 | #define XFS_BMAP_PTR_DADDR(bb,i,cur) \ |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 191 | (XFS_BTREE_PTR_ADDR(xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \ |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 192 | be16_to_cpu((bb)->bb_level), cur))) |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 193 | #define XFS_BMAP_PTR_IADDR(bb,i,cur) \ |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 194 | (XFS_BTREE_PTR_ADDR(xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS( \ |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 195 | be16_to_cpu((bb)->bb_level), cur))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
| 197 | /* |
| 198 | * These are to be used when we know the size of the block and |
| 199 | * we don't have a cursor. |
| 200 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | #define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz) \ |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 202 | (XFS_BTREE_REC_ADDR(xfs_bmbt,bb,i)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | #define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz) \ |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 204 | (XFS_BTREE_KEY_ADDR(xfs_bmbt,bb,i)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | #define XFS_BMAP_BROOT_PTR_ADDR(bb,i,sz) \ |
Eric Sandeen | 2c36dde | 2007-02-10 18:37:33 +1100 | [diff] [blame] | 206 | (XFS_BTREE_PTR_ADDR(xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 208 | #define XFS_BMAP_BROOT_NUMRECS(bb) be16_to_cpu((bb)->bb_numrecs) |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 209 | #define XFS_BMAP_BROOT_MAXRECS(sz) XFS_BTREE_BLOCK_MAXRECS(sz,xfs_bmbt,0) |
| 210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | #define XFS_BMAP_BROOT_SPACE_CALC(nrecs) \ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 212 | (int)(sizeof(xfs_bmbt_block_t) + \ |
| 213 | ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))) |
| 214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | #define XFS_BMAP_BROOT_SPACE(bb) \ |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 216 | (XFS_BMAP_BROOT_SPACE_CALC(be16_to_cpu((bb)->bb_numrecs))) |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 217 | #define XFS_BMDR_SPACE_CALC(nrecs) \ |
| 218 | (int)(sizeof(xfs_bmdr_block_t) + \ |
| 219 | ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | /* |
| 222 | * Maximum number of bmap btree levels. |
| 223 | */ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 224 | #define XFS_BM_MAXLEVELS(mp,w) ((mp)->m_bm_maxlevels[(w)]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 226 | #define XFS_BMAP_SANITY_CHECK(mp,bb,level) \ |
Christoph Hellwig | 16259e7 | 2005-11-02 15:11:25 +1100 | [diff] [blame] | 227 | (be32_to_cpu((bb)->bb_magic) == XFS_BMAP_MAGIC && \ |
| 228 | be16_to_cpu((bb)->bb_level) == level && \ |
| 229 | be16_to_cpu((bb)->bb_numrecs) > 0 && \ |
| 230 | be16_to_cpu((bb)->bb_numrecs) <= (mp)->m_bmap_dmxr[(level) != 0]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
| 232 | |
| 233 | #ifdef __KERNEL__ |
| 234 | |
| 235 | #if defined(XFS_BMBT_TRACE) |
| 236 | /* |
| 237 | * Trace buffer entry types. |
| 238 | */ |
| 239 | #define XFS_BMBT_KTRACE_ARGBI 1 |
| 240 | #define XFS_BMBT_KTRACE_ARGBII 2 |
| 241 | #define XFS_BMBT_KTRACE_ARGFFFI 3 |
| 242 | #define XFS_BMBT_KTRACE_ARGI 4 |
| 243 | #define XFS_BMBT_KTRACE_ARGIFK 5 |
| 244 | #define XFS_BMBT_KTRACE_ARGIFR 6 |
| 245 | #define XFS_BMBT_KTRACE_ARGIK 7 |
| 246 | #define XFS_BMBT_KTRACE_CUR 8 |
| 247 | |
| 248 | #define XFS_BMBT_TRACE_SIZE 4096 /* size of global trace buffer */ |
| 249 | #define XFS_BMBT_KTRACE_SIZE 32 /* size of per-inode trace buffer */ |
| 250 | extern ktrace_t *xfs_bmbt_trace_buf; |
| 251 | #endif |
| 252 | |
| 253 | /* |
| 254 | * Prototypes for xfs_bmap.c to call. |
| 255 | */ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 256 | extern void xfs_bmdr_to_bmbt(xfs_bmdr_block_t *, int, xfs_bmbt_block_t *, int); |
| 257 | extern int xfs_bmbt_decrement(struct xfs_btree_cur *, int, int *); |
| 258 | extern int xfs_bmbt_delete(struct xfs_btree_cur *, int *); |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 259 | extern void xfs_bmbt_get_all(xfs_bmbt_rec_host_t *r, xfs_bmbt_irec_t *s); |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 260 | extern xfs_bmbt_block_t *xfs_bmbt_get_block(struct xfs_btree_cur *cur, |
| 261 | int, struct xfs_buf **bpp); |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 262 | extern xfs_filblks_t xfs_bmbt_get_blockcount(xfs_bmbt_rec_host_t *r); |
| 263 | extern xfs_fsblock_t xfs_bmbt_get_startblock(xfs_bmbt_rec_host_t *r); |
| 264 | extern xfs_fileoff_t xfs_bmbt_get_startoff(xfs_bmbt_rec_host_t *r); |
| 265 | extern xfs_exntst_t xfs_bmbt_get_state(xfs_bmbt_rec_host_t *r); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 267 | extern void xfs_bmbt_disk_get_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s); |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 268 | extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(xfs_bmbt_rec_t *r); |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 269 | extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(xfs_bmbt_rec_t *r); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 271 | extern int xfs_bmbt_increment(struct xfs_btree_cur *, int, int *); |
| 272 | extern int xfs_bmbt_insert(struct xfs_btree_cur *, int *); |
| 273 | extern void xfs_bmbt_log_block(struct xfs_btree_cur *, struct xfs_buf *, int); |
| 274 | extern void xfs_bmbt_log_recs(struct xfs_btree_cur *, struct xfs_buf *, int, |
| 275 | int); |
| 276 | extern int xfs_bmbt_lookup_eq(struct xfs_btree_cur *, xfs_fileoff_t, |
| 277 | xfs_fsblock_t, xfs_filblks_t, int *); |
| 278 | extern int xfs_bmbt_lookup_ge(struct xfs_btree_cur *, xfs_fileoff_t, |
| 279 | xfs_fsblock_t, xfs_filblks_t, int *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | /* |
| 282 | * Give the bmap btree a new root block. Copy the old broot contents |
| 283 | * down into a real block and make the broot point to it. |
| 284 | */ |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 285 | extern int xfs_bmbt_newroot(struct xfs_btree_cur *cur, int *lflags, int *stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 287 | extern void xfs_bmbt_set_all(xfs_bmbt_rec_host_t *r, xfs_bmbt_irec_t *s); |
| 288 | extern void xfs_bmbt_set_allf(xfs_bmbt_rec_host_t *r, xfs_fileoff_t o, |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 289 | xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v); |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 290 | extern void xfs_bmbt_set_blockcount(xfs_bmbt_rec_host_t *r, xfs_filblks_t v); |
| 291 | extern void xfs_bmbt_set_startblock(xfs_bmbt_rec_host_t *r, xfs_fsblock_t v); |
| 292 | extern void xfs_bmbt_set_startoff(xfs_bmbt_rec_host_t *r, xfs_fileoff_t v); |
| 293 | extern void xfs_bmbt_set_state(xfs_bmbt_rec_host_t *r, xfs_exntst_t v); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 295 | extern void xfs_bmbt_disk_set_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s); |
| 296 | extern void xfs_bmbt_disk_set_allf(xfs_bmbt_rec_t *r, xfs_fileoff_t o, |
| 297 | xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 299 | extern void xfs_bmbt_to_bmdr(xfs_bmbt_block_t *, int, xfs_bmdr_block_t *, int); |
| 300 | extern int xfs_bmbt_update(struct xfs_btree_cur *, xfs_fileoff_t, |
| 301 | xfs_fsblock_t, xfs_filblks_t, xfs_exntst_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | #endif /* __KERNEL__ */ |
| 304 | |
| 305 | #endif /* __XFS_BMAP_BTREE_H__ */ |