blob: 6478cfa0e5395054e35b6c9f75c686f7d6010ad2 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000,2002-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * 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 Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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 Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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 Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_BMAP_BTREE_H__
19#define __XFS_BMAP_BTREE_H__
20
21#define XFS_BMAP_MAGIC 0x424d4150 /* 'BMAP' */
22
23struct xfs_btree_cur;
24struct xfs_btree_lblock;
25struct xfs_mount;
26struct xfs_inode;
27
28/*
29 * Bmap root header, on-disk form only.
30 */
Christoph Hellwig16259e72005-11-02 15:11:25 +110031typedef struct xfs_bmdr_block {
32 __be16 bb_level; /* 0 is a leaf */
33 __be16 bb_numrecs; /* current # of data records */
Linus Torvalds1da177e2005-04-16 15:20:36 -070034} xfs_bmdr_block_t;
35
36/*
37 * Bmap btree record and extent descriptor.
38 * For 32-bit kernels,
39 * l0:31 is an extent flag (value 1 indicates non-normal).
40 * l0:0-30 and l1:9-31 are startoff.
41 * l1:0-8, l2:0-31, and l3:21-31 are startblock.
42 * l3:0-20 are blockcount.
43 * For 64-bit kernels,
44 * l0:63 is an extent flag (value 1 indicates non-normal).
45 * l0:9-62 are startoff.
46 * l0:0-8 and l1:21-63 are startblock.
47 * l1:0-20 are blockcount.
48 */
49
Nathan Scottf016bad2005-09-08 15:30:05 +100050#ifndef XFS_NATIVE_HOST
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
52#define BMBT_TOTAL_BITLEN 128 /* 128 bits, 16 bytes */
53#define BMBT_EXNTFLAG_BITOFF 0
54#define BMBT_EXNTFLAG_BITLEN 1
55#define BMBT_STARTOFF_BITOFF (BMBT_EXNTFLAG_BITOFF + BMBT_EXNTFLAG_BITLEN)
56#define BMBT_STARTOFF_BITLEN 54
57#define BMBT_STARTBLOCK_BITOFF (BMBT_STARTOFF_BITOFF + BMBT_STARTOFF_BITLEN)
58#define BMBT_STARTBLOCK_BITLEN 52
59#define BMBT_BLOCKCOUNT_BITOFF \
60 (BMBT_STARTBLOCK_BITOFF + BMBT_STARTBLOCK_BITLEN)
61#define BMBT_BLOCKCOUNT_BITLEN (BMBT_TOTAL_BITLEN - BMBT_BLOCKCOUNT_BITOFF)
62
63#else
64
65#define BMBT_TOTAL_BITLEN 128 /* 128 bits, 16 bytes */
66#define BMBT_EXNTFLAG_BITOFF 63
67#define BMBT_EXNTFLAG_BITLEN 1
68#define BMBT_STARTOFF_BITOFF (BMBT_EXNTFLAG_BITOFF - BMBT_STARTOFF_BITLEN)
69#define BMBT_STARTOFF_BITLEN 54
70#define BMBT_STARTBLOCK_BITOFF 85 /* 128 - 43 (other 9 is in first word) */
71#define BMBT_STARTBLOCK_BITLEN 52
72#define BMBT_BLOCKCOUNT_BITOFF 64 /* Start of second 64 bit container */
73#define BMBT_BLOCKCOUNT_BITLEN 21
74
Nathan Scottf016bad2005-09-08 15:30:05 +100075#endif /* XFS_NATIVE_HOST */
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
77
78#define BMBT_USE_64 1
79
80typedef struct xfs_bmbt_rec_32
81{
82 __uint32_t l0, l1, l2, l3;
83} xfs_bmbt_rec_32_t;
84typedef struct xfs_bmbt_rec_64
85{
86 __uint64_t l0, l1;
87} xfs_bmbt_rec_64_t;
88
89typedef __uint64_t xfs_bmbt_rec_base_t; /* use this for casts */
90typedef xfs_bmbt_rec_64_t xfs_bmbt_rec_t, xfs_bmdr_rec_t;
91
92/*
93 * Values and macros for delayed-allocation startblock fields.
94 */
95#define STARTBLOCKVALBITS 17
96#define STARTBLOCKMASKBITS (15 + XFS_BIG_BLKNOS * 20)
97#define DSTARTBLOCKMASKBITS (15 + 20)
98#define STARTBLOCKMASK \
99 (((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
100#define DSTARTBLOCKMASK \
101 (((((xfs_dfsbno_t)1) << DSTARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
Nathan Scotta844f452005-11-02 14:38:42 +1100102
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103#define ISNULLSTARTBLOCK(x) isnullstartblock(x)
Nathan Scotta844f452005-11-02 14:38:42 +1100104static inline int isnullstartblock(xfs_fsblock_t x)
105{
106 return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
107}
108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109#define ISNULLDSTARTBLOCK(x) isnulldstartblock(x)
Nathan Scotta844f452005-11-02 14:38:42 +1100110static inline int isnulldstartblock(xfs_dfsbno_t x)
111{
112 return ((x) & DSTARTBLOCKMASK) == DSTARTBLOCKMASK;
113}
114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#define NULLSTARTBLOCK(k) nullstartblock(k)
Nathan Scotta844f452005-11-02 14:38:42 +1100116static inline xfs_fsblock_t nullstartblock(int k)
117{
118 ASSERT(k < (1 << STARTBLOCKVALBITS));
119 return STARTBLOCKMASK | (k);
120}
121
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122#define STARTBLOCKVAL(x) startblockval(x)
Nathan Scotta844f452005-11-02 14:38:42 +1100123static inline xfs_filblks_t startblockval(xfs_fsblock_t x)
124{
125 return (xfs_filblks_t)((x) & ~STARTBLOCKMASK);
126}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127
128/*
129 * Possible extent formats.
130 */
131typedef enum {
132 XFS_EXTFMT_NOSTATE = 0,
133 XFS_EXTFMT_HASSTATE
134} xfs_exntfmt_t;
135
136/*
137 * Possible extent states.
138 */
139typedef enum {
140 XFS_EXT_NORM, XFS_EXT_UNWRITTEN,
141 XFS_EXT_DMAPI_OFFLINE, XFS_EXT_INVALID
142} xfs_exntst_t;
143
144/*
145 * Extent state and extent format macros.
146 */
Nathan Scotta844f452005-11-02 14:38:42 +1100147#define XFS_EXTFMT_INODE(x) \
148 (XFS_SB_VERSION_HASEXTFLGBIT(&((x)->i_mount->m_sb)) ? \
149 XFS_EXTFMT_HASSTATE : XFS_EXTFMT_NOSTATE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150#define ISUNWRITTEN(x) ((x)->br_state == XFS_EXT_UNWRITTEN)
151
152/*
153 * Incore version of above.
154 */
155typedef struct xfs_bmbt_irec
156{
157 xfs_fileoff_t br_startoff; /* starting file offset */
158 xfs_fsblock_t br_startblock; /* starting block number */
159 xfs_filblks_t br_blockcount; /* number of blocks */
160 xfs_exntst_t br_state; /* extent state */
161} xfs_bmbt_irec_t;
162
163/*
164 * Key structure for non-leaf levels of the tree.
165 */
166typedef struct xfs_bmbt_key
167{
168 xfs_dfiloff_t br_startoff; /* starting file offset */
169} xfs_bmbt_key_t, xfs_bmdr_key_t;
170
171typedef xfs_dfsbno_t xfs_bmbt_ptr_t, xfs_bmdr_ptr_t; /* btree pointer type */
172 /* btree block header type */
173typedef struct xfs_btree_lblock xfs_bmbt_block_t;
174
Nathan Scotta844f452005-11-02 14:38:42 +1100175#define XFS_BUF_TO_BMBT_BLOCK(bp) ((xfs_bmbt_block_t *)XFS_BUF_PTR(bp))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
Nathan Scotta844f452005-11-02 14:38:42 +1100177#define XFS_BMAP_IBLOCK_SIZE(lev,cur) (1 << (cur)->bc_blocklog)
178#define XFS_BMAP_RBLOCK_DSIZE(lev,cur) ((cur)->bc_private.b.forksize)
179#define XFS_BMAP_RBLOCK_ISIZE(lev,cur) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 ((int)XFS_IFORK_PTR((cur)->bc_private.b.ip, \
Nathan Scotta844f452005-11-02 14:38:42 +1100181 (cur)->bc_private.b.whichfork)->if_broot_bytes)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
Nathan Scotta844f452005-11-02 14:38:42 +1100183#define XFS_BMAP_BLOCK_DSIZE(lev,cur) \
184 (((lev) == (cur)->bc_nlevels - 1 ? \
185 XFS_BMAP_RBLOCK_DSIZE(lev,cur) : XFS_BMAP_IBLOCK_SIZE(lev,cur)))
186#define XFS_BMAP_BLOCK_ISIZE(lev,cur) \
187 (((lev) == (cur)->bc_nlevels - 1 ? \
188 XFS_BMAP_RBLOCK_ISIZE(lev,cur) : XFS_BMAP_IBLOCK_SIZE(lev,cur)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190#define XFS_BMAP_BLOCK_DMAXRECS(lev,cur) \
Nathan Scotta844f452005-11-02 14:38:42 +1100191 (((lev) == (cur)->bc_nlevels - 1 ? \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur), \
193 xfs_bmdr, (lev) == 0) : \
Nathan Scotta844f452005-11-02 14:38:42 +1100194 ((cur)->bc_mp->m_bmap_dmxr[(lev) != 0])))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195#define XFS_BMAP_BLOCK_IMAXRECS(lev,cur) \
Nathan Scotta844f452005-11-02 14:38:42 +1100196 (((lev) == (cur)->bc_nlevels - 1 ? \
197 XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur),\
198 xfs_bmbt, (lev) == 0) : \
199 ((cur)->bc_mp->m_bmap_dmxr[(lev) != 0])))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201#define XFS_BMAP_BLOCK_DMINRECS(lev,cur) \
Nathan Scotta844f452005-11-02 14:38:42 +1100202 (((lev) == (cur)->bc_nlevels - 1 ? \
203 XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur),\
204 xfs_bmdr, (lev) == 0) : \
205 ((cur)->bc_mp->m_bmap_dmnr[(lev) != 0])))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206#define XFS_BMAP_BLOCK_IMINRECS(lev,cur) \
Nathan Scotta844f452005-11-02 14:38:42 +1100207 (((lev) == (cur)->bc_nlevels - 1 ? \
208 XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur),\
209 xfs_bmbt, (lev) == 0) : \
210 ((cur)->bc_mp->m_bmap_dmnr[(lev) != 0])))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211
Nathan Scotta844f452005-11-02 14:38:42 +1100212#define XFS_BMAP_REC_DADDR(bb,i,cur) \
213 (XFS_BTREE_REC_ADDR(XFS_BMAP_BLOCK_DSIZE( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100214 be16_to_cpu((bb)->bb_level), cur), \
Nathan Scotta844f452005-11-02 14:38:42 +1100215 xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100216 be16_to_cpu((bb)->bb_level), cur)))
Nathan Scotta844f452005-11-02 14:38:42 +1100217#define XFS_BMAP_REC_IADDR(bb,i,cur) \
218 (XFS_BTREE_REC_ADDR(XFS_BMAP_BLOCK_ISIZE( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100219 be16_to_cpu((bb)->bb_level), cur), \
Nathan Scotta844f452005-11-02 14:38:42 +1100220 xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100221 be16_to_cpu((bb)->bb_level), cur)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222
Nathan Scotta844f452005-11-02 14:38:42 +1100223#define XFS_BMAP_KEY_DADDR(bb,i,cur) \
224 (XFS_BTREE_KEY_ADDR(XFS_BMAP_BLOCK_DSIZE( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100225 be16_to_cpu((bb)->bb_level), cur), \
Nathan Scotta844f452005-11-02 14:38:42 +1100226 xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100227 be16_to_cpu((bb)->bb_level), cur)))
Nathan Scotta844f452005-11-02 14:38:42 +1100228#define XFS_BMAP_KEY_IADDR(bb,i,cur) \
229 (XFS_BTREE_KEY_ADDR(XFS_BMAP_BLOCK_ISIZE( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100230 be16_to_cpu((bb)->bb_level), cur), \
Nathan Scotta844f452005-11-02 14:38:42 +1100231 xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100232 be16_to_cpu((bb)->bb_level), cur)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
Nathan Scotta844f452005-11-02 14:38:42 +1100234#define XFS_BMAP_PTR_DADDR(bb,i,cur) \
235 (XFS_BTREE_PTR_ADDR(XFS_BMAP_BLOCK_DSIZE( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100236 be16_to_cpu((bb)->bb_level), cur), \
Nathan Scotta844f452005-11-02 14:38:42 +1100237 xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100238 be16_to_cpu((bb)->bb_level), cur)))
Nathan Scotta844f452005-11-02 14:38:42 +1100239#define XFS_BMAP_PTR_IADDR(bb,i,cur) \
240 (XFS_BTREE_PTR_ADDR(XFS_BMAP_BLOCK_ISIZE( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100241 be16_to_cpu((bb)->bb_level), cur), \
Nathan Scotta844f452005-11-02 14:38:42 +1100242 xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS( \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100243 be16_to_cpu((bb)->bb_level), cur)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244
245/*
246 * These are to be used when we know the size of the block and
247 * we don't have a cursor.
248 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249#define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz) \
Nathan Scotta844f452005-11-02 14:38:42 +1100250 (XFS_BTREE_REC_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251#define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz) \
Nathan Scotta844f452005-11-02 14:38:42 +1100252 (XFS_BTREE_KEY_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253#define XFS_BMAP_BROOT_PTR_ADDR(bb,i,sz) \
Nathan Scotta844f452005-11-02 14:38:42 +1100254 (XFS_BTREE_PTR_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255
Christoph Hellwig16259e72005-11-02 15:11:25 +1100256#define XFS_BMAP_BROOT_NUMRECS(bb) be16_to_cpu((bb)->bb_numrecs)
Nathan Scotta844f452005-11-02 14:38:42 +1100257#define XFS_BMAP_BROOT_MAXRECS(sz) XFS_BTREE_BLOCK_MAXRECS(sz,xfs_bmbt,0)
258
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259#define XFS_BMAP_BROOT_SPACE_CALC(nrecs) \
Nathan Scotta844f452005-11-02 14:38:42 +1100260 (int)(sizeof(xfs_bmbt_block_t) + \
261 ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
262
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263#define XFS_BMAP_BROOT_SPACE(bb) \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100264 (XFS_BMAP_BROOT_SPACE_CALC(be16_to_cpu((bb)->bb_numrecs)))
Nathan Scotta844f452005-11-02 14:38:42 +1100265#define XFS_BMDR_SPACE_CALC(nrecs) \
266 (int)(sizeof(xfs_bmdr_block_t) + \
267 ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268
269/*
270 * Maximum number of bmap btree levels.
271 */
Nathan Scotta844f452005-11-02 14:38:42 +1100272#define XFS_BM_MAXLEVELS(mp,w) ((mp)->m_bm_maxlevels[(w)])
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273
Nathan Scotta844f452005-11-02 14:38:42 +1100274#define XFS_BMAP_SANITY_CHECK(mp,bb,level) \
Christoph Hellwig16259e72005-11-02 15:11:25 +1100275 (be32_to_cpu((bb)->bb_magic) == XFS_BMAP_MAGIC && \
276 be16_to_cpu((bb)->bb_level) == level && \
277 be16_to_cpu((bb)->bb_numrecs) > 0 && \
278 be16_to_cpu((bb)->bb_numrecs) <= (mp)->m_bmap_dmxr[(level) != 0])
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
280
281#ifdef __KERNEL__
282
283#if defined(XFS_BMBT_TRACE)
284/*
285 * Trace buffer entry types.
286 */
287#define XFS_BMBT_KTRACE_ARGBI 1
288#define XFS_BMBT_KTRACE_ARGBII 2
289#define XFS_BMBT_KTRACE_ARGFFFI 3
290#define XFS_BMBT_KTRACE_ARGI 4
291#define XFS_BMBT_KTRACE_ARGIFK 5
292#define XFS_BMBT_KTRACE_ARGIFR 6
293#define XFS_BMBT_KTRACE_ARGIK 7
294#define XFS_BMBT_KTRACE_CUR 8
295
296#define XFS_BMBT_TRACE_SIZE 4096 /* size of global trace buffer */
297#define XFS_BMBT_KTRACE_SIZE 32 /* size of per-inode trace buffer */
298extern ktrace_t *xfs_bmbt_trace_buf;
299#endif
300
301/*
302 * Prototypes for xfs_bmap.c to call.
303 */
Nathan Scotta844f452005-11-02 14:38:42 +1100304extern void xfs_bmdr_to_bmbt(xfs_bmdr_block_t *, int, xfs_bmbt_block_t *, int);
305extern int xfs_bmbt_decrement(struct xfs_btree_cur *, int, int *);
306extern int xfs_bmbt_delete(struct xfs_btree_cur *, int *);
307extern void xfs_bmbt_get_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
308extern xfs_bmbt_block_t *xfs_bmbt_get_block(struct xfs_btree_cur *cur,
309 int, struct xfs_buf **bpp);
310extern xfs_filblks_t xfs_bmbt_get_blockcount(xfs_bmbt_rec_t *r);
311extern xfs_fsblock_t xfs_bmbt_get_startblock(xfs_bmbt_rec_t *r);
312extern xfs_fileoff_t xfs_bmbt_get_startoff(xfs_bmbt_rec_t *r);
313extern xfs_exntst_t xfs_bmbt_get_state(xfs_bmbt_rec_t *r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314
Nathan Scottf016bad2005-09-08 15:30:05 +1000315#ifndef XFS_NATIVE_HOST
Nathan Scotta844f452005-11-02 14:38:42 +1100316extern void xfs_bmbt_disk_get_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
317extern xfs_exntst_t xfs_bmbt_disk_get_state(xfs_bmbt_rec_t *r);
318extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(xfs_bmbt_rec_t *r);
319extern xfs_fsblock_t xfs_bmbt_disk_get_startblock(xfs_bmbt_rec_t *r);
320extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(xfs_bmbt_rec_t *r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321#else
Nathan Scotta844f452005-11-02 14:38:42 +1100322#define xfs_bmbt_disk_get_all(r, s) xfs_bmbt_get_all(r, s)
323#define xfs_bmbt_disk_get_state(r) xfs_bmbt_get_state(r)
324#define xfs_bmbt_disk_get_blockcount(r) xfs_bmbt_get_blockcount(r)
325#define xfs_bmbt_disk_get_startblock(r) xfs_bmbt_get_blockcount(r)
326#define xfs_bmbt_disk_get_startoff(r) xfs_bmbt_get_startoff(r)
Nathan Scottf016bad2005-09-08 15:30:05 +1000327#endif /* XFS_NATIVE_HOST */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328
Nathan Scotta844f452005-11-02 14:38:42 +1100329extern int xfs_bmbt_increment(struct xfs_btree_cur *, int, int *);
330extern int xfs_bmbt_insert(struct xfs_btree_cur *, int *);
331extern void xfs_bmbt_log_block(struct xfs_btree_cur *, struct xfs_buf *, int);
332extern void xfs_bmbt_log_recs(struct xfs_btree_cur *, struct xfs_buf *, int,
333 int);
334extern int xfs_bmbt_lookup_eq(struct xfs_btree_cur *, xfs_fileoff_t,
335 xfs_fsblock_t, xfs_filblks_t, int *);
336extern int xfs_bmbt_lookup_ge(struct xfs_btree_cur *, xfs_fileoff_t,
337 xfs_fsblock_t, xfs_filblks_t, int *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339/*
340 * Give the bmap btree a new root block. Copy the old broot contents
341 * down into a real block and make the broot point to it.
342 */
Nathan Scotta844f452005-11-02 14:38:42 +1100343extern int xfs_bmbt_newroot(struct xfs_btree_cur *cur, int *lflags, int *stat);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
Nathan Scotta844f452005-11-02 14:38:42 +1100345extern void xfs_bmbt_set_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
346extern void xfs_bmbt_set_allf(xfs_bmbt_rec_t *r, xfs_fileoff_t o,
347 xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v);
348extern void xfs_bmbt_set_blockcount(xfs_bmbt_rec_t *r, xfs_filblks_t v);
349extern void xfs_bmbt_set_startblock(xfs_bmbt_rec_t *r, xfs_fsblock_t v);
350extern void xfs_bmbt_set_startoff(xfs_bmbt_rec_t *r, xfs_fileoff_t v);
351extern void xfs_bmbt_set_state(xfs_bmbt_rec_t *r, xfs_exntst_t v);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
Nathan Scottf016bad2005-09-08 15:30:05 +1000353#ifndef XFS_NATIVE_HOST
Nathan Scotta844f452005-11-02 14:38:42 +1100354extern void xfs_bmbt_disk_set_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
355extern void xfs_bmbt_disk_set_allf(xfs_bmbt_rec_t *r, xfs_fileoff_t o,
356 xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357#else
Nathan Scotta844f452005-11-02 14:38:42 +1100358#define xfs_bmbt_disk_set_all(r, s) xfs_bmbt_set_all(r, s)
359#define xfs_bmbt_disk_set_allf(r, o, b, c, v) xfs_bmbt_set_allf(r, o, b, c, v)
Nathan Scottf016bad2005-09-08 15:30:05 +1000360#endif /* XFS_NATIVE_HOST */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
Nathan Scotta844f452005-11-02 14:38:42 +1100362extern void xfs_bmbt_to_bmdr(xfs_bmbt_block_t *, int, xfs_bmdr_block_t *, int);
363extern int xfs_bmbt_update(struct xfs_btree_cur *, xfs_fileoff_t,
364 xfs_fsblock_t, xfs_filblks_t, xfs_exntst_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365
366#ifdef DEBUG
367/*
368 * Get the data from the pointed-to record.
369 */
Nathan Scotta844f452005-11-02 14:38:42 +1100370extern int xfs_bmbt_get_rec(struct xfs_btree_cur *, xfs_fileoff_t *,
371 xfs_fsblock_t *, xfs_filblks_t *,
372 xfs_exntst_t *, int *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373#endif
374
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375#endif /* __KERNEL__ */
376
377#endif /* __XFS_BMAP_BTREE_H__ */