summaryrefslogtreecommitdiff
path: root/fs/xfs/xfs_bmap_btree.h
blob: 0a40cf126c285cfb940b5915f898722fc6ca1ea3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
/*
 * Copyright (c) 2000,2002-2004 Silicon Graphics, Inc.  All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.	 Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */
#ifndef __XFS_BMAP_BTREE_H__
#define __XFS_BMAP_BTREE_H__

#define XFS_BMAP_MAGIC	0x424d4150	/* 'BMAP' */

struct xfs_btree_cur;
struct xfs_btree_lblock;
struct xfs_mount;
struct xfs_inode;

/*
 * Bmap root header, on-disk form only.
 */
typedef struct xfs_bmdr_block
{
	__uint16_t	bb_level;	/* 0 is a leaf */
	__uint16_t	bb_numrecs;	/* current # of data records */
} xfs_bmdr_block_t;

/*
 * Bmap btree record and extent descriptor.
 * For 32-bit kernels,
 *  l0:31 is an extent flag (value 1 indicates non-normal).
 *  l0:0-30 and l1:9-31 are startoff.
 *  l1:0-8, l2:0-31, and l3:21-31 are startblock.
 *  l3:0-20 are blockcount.
 * For 64-bit kernels,
 *  l0:63 is an extent flag (value 1 indicates non-normal).
 *  l0:9-62 are startoff.
 *  l0:0-8 and l1:21-63 are startblock.
 *  l1:0-20 are blockcount.
 */

#if __BYTE_ORDER == __LITTLE_ENDIAN

#define BMBT_TOTAL_BITLEN	128	/* 128 bits, 16 bytes */
#define BMBT_EXNTFLAG_BITOFF	0
#define BMBT_EXNTFLAG_BITLEN	1
#define BMBT_STARTOFF_BITOFF	(BMBT_EXNTFLAG_BITOFF + BMBT_EXNTFLAG_BITLEN)
#define BMBT_STARTOFF_BITLEN	54
#define BMBT_STARTBLOCK_BITOFF	(BMBT_STARTOFF_BITOFF + BMBT_STARTOFF_BITLEN)
#define BMBT_STARTBLOCK_BITLEN	52
#define BMBT_BLOCKCOUNT_BITOFF	\
	(BMBT_STARTBLOCK_BITOFF + BMBT_STARTBLOCK_BITLEN)
#define BMBT_BLOCKCOUNT_BITLEN	(BMBT_TOTAL_BITLEN - BMBT_BLOCKCOUNT_BITOFF)

#else

#define BMBT_TOTAL_BITLEN	128	/* 128 bits, 16 bytes */
#define BMBT_EXNTFLAG_BITOFF	63
#define BMBT_EXNTFLAG_BITLEN	1
#define BMBT_STARTOFF_BITOFF	(BMBT_EXNTFLAG_BITOFF - BMBT_STARTOFF_BITLEN)
#define BMBT_STARTOFF_BITLEN	54
#define BMBT_STARTBLOCK_BITOFF	85 /* 128 - 43 (other 9 is in first word) */
#define BMBT_STARTBLOCK_BITLEN	52
#define BMBT_BLOCKCOUNT_BITOFF	64 /* Start of second 64 bit container */
#define BMBT_BLOCKCOUNT_BITLEN	21

#endif


#define BMBT_USE_64	1

typedef struct xfs_bmbt_rec_32
{
	__uint32_t		l0, l1, l2, l3;
} xfs_bmbt_rec_32_t;
typedef struct xfs_bmbt_rec_64
{
	__uint64_t		l0, l1;
} xfs_bmbt_rec_64_t;

typedef __uint64_t	xfs_bmbt_rec_base_t;	/* use this for casts */
typedef xfs_bmbt_rec_64_t xfs_bmbt_rec_t, xfs_bmdr_rec_t;

/*
 * Values and macros for delayed-allocation startblock fields.
 */
#define STARTBLOCKVALBITS	17
#define STARTBLOCKMASKBITS	(15 + XFS_BIG_BLKNOS * 20)
#define DSTARTBLOCKMASKBITS	(15 + 20)
#define STARTBLOCKMASK		\
	(((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
#define DSTARTBLOCKMASK		\
	(((((xfs_dfsbno_t)1) << DSTARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_ISNULLSTARTBLOCK)
int isnullstartblock(xfs_fsblock_t x);
#define ISNULLSTARTBLOCK(x)	isnullstartblock(x)
#else
#define ISNULLSTARTBLOCK(x)	(((x) & STARTBLOCKMASK) == STARTBLOCKMASK)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_ISNULLDSTARTBLOCK)
int isnulldstartblock(xfs_dfsbno_t x);
#define ISNULLDSTARTBLOCK(x)	isnulldstartblock(x)
#else
#define ISNULLDSTARTBLOCK(x)	(((x) & DSTARTBLOCKMASK) == DSTARTBLOCKMASK)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_NULLSTARTBLOCK)
xfs_fsblock_t nullstartblock(int k);
#define NULLSTARTBLOCK(k)	nullstartblock(k)
#else
#define NULLSTARTBLOCK(k)	\
	((ASSERT(k < (1 << STARTBLOCKVALBITS))), (STARTBLOCKMASK | (k)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_STARTBLOCKVAL)
xfs_filblks_t startblockval(xfs_fsblock_t x);
#define STARTBLOCKVAL(x)	startblockval(x)
#else
#define STARTBLOCKVAL(x)	((xfs_filblks_t)((x) & ~STARTBLOCKMASK))
#endif

/*
 * Possible extent formats.
 */
typedef enum {
	XFS_EXTFMT_NOSTATE = 0,
	XFS_EXTFMT_HASSTATE
} xfs_exntfmt_t;

/*
 * Possible extent states.
 */
typedef enum {
	XFS_EXT_NORM, XFS_EXT_UNWRITTEN,
	XFS_EXT_DMAPI_OFFLINE, XFS_EXT_INVALID
} xfs_exntst_t;

/*
 * Extent state and extent format macros.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_EXTFMT_INODE )
xfs_exntfmt_t xfs_extfmt_inode(struct xfs_inode *ip);
#define XFS_EXTFMT_INODE(x)	xfs_extfmt_inode(x)
#else
#define XFS_EXTFMT_INODE(x) \
  (XFS_SB_VERSION_HASEXTFLGBIT(&((x)->i_mount->m_sb)) ? \
	XFS_EXTFMT_HASSTATE : XFS_EXTFMT_NOSTATE)
#endif
#define ISUNWRITTEN(x)	((x)->br_state == XFS_EXT_UNWRITTEN)

/*
 * Incore version of above.
 */
typedef struct xfs_bmbt_irec
{
	xfs_fileoff_t	br_startoff;	/* starting file offset */
	xfs_fsblock_t	br_startblock;	/* starting block number */
	xfs_filblks_t	br_blockcount;	/* number of blocks */
	xfs_exntst_t	br_state;	/* extent state */
} xfs_bmbt_irec_t;

/*
 * Key structure for non-leaf levels of the tree.
 */
typedef struct xfs_bmbt_key
{
	xfs_dfiloff_t	br_startoff;	/* starting file offset */
} xfs_bmbt_key_t, xfs_bmdr_key_t;

typedef xfs_dfsbno_t xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;	/* btree pointer type */
					/* btree block header type */
typedef struct xfs_btree_lblock xfs_bmbt_block_t;

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_BMBT_BLOCK)
xfs_bmbt_block_t *xfs_buf_to_bmbt_block(struct xfs_buf *bp);
#define XFS_BUF_TO_BMBT_BLOCK(bp)		xfs_buf_to_bmbt_block(bp)
#else
#define XFS_BUF_TO_BMBT_BLOCK(bp) ((xfs_bmbt_block_t *)(XFS_BUF_PTR(bp)))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_RBLOCK_DSIZE)
int xfs_bmap_rblock_dsize(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_RBLOCK_DSIZE(lev,cur)		xfs_bmap_rblock_dsize(lev,cur)
#else
#define XFS_BMAP_RBLOCK_DSIZE(lev,cur) ((cur)->bc_private.b.forksize)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_RBLOCK_ISIZE)
int xfs_bmap_rblock_isize(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_RBLOCK_ISIZE(lev,cur)		xfs_bmap_rblock_isize(lev,cur)
#else
#define XFS_BMAP_RBLOCK_ISIZE(lev,cur) \
	((int)XFS_IFORK_PTR((cur)->bc_private.b.ip, \
			    (cur)->bc_private.b.whichfork)->if_broot_bytes)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_IBLOCK_SIZE)
int xfs_bmap_iblock_size(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_IBLOCK_SIZE(lev,cur)		xfs_bmap_iblock_size(lev,cur)
#else
#define XFS_BMAP_IBLOCK_SIZE(lev,cur) (1 << (cur)->bc_blocklog)
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_DSIZE)
int xfs_bmap_block_dsize(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_BLOCK_DSIZE(lev,cur)		xfs_bmap_block_dsize(lev,cur)
#else
#define XFS_BMAP_BLOCK_DSIZE(lev,cur) \
	((lev) == (cur)->bc_nlevels - 1 ? \
		XFS_BMAP_RBLOCK_DSIZE(lev,cur) : \
		XFS_BMAP_IBLOCK_SIZE(lev,cur))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_ISIZE)
int xfs_bmap_block_isize(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_BLOCK_ISIZE(lev,cur)		xfs_bmap_block_isize(lev,cur)
#else
#define XFS_BMAP_BLOCK_ISIZE(lev,cur) \
	((lev) == (cur)->bc_nlevels - 1 ? \
		XFS_BMAP_RBLOCK_ISIZE(lev,cur) : \
		XFS_BMAP_IBLOCK_SIZE(lev,cur))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_DMAXRECS)
int xfs_bmap_block_dmaxrecs(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_BLOCK_DMAXRECS(lev,cur)	xfs_bmap_block_dmaxrecs(lev,cur)
#else
#define XFS_BMAP_BLOCK_DMAXRECS(lev,cur) \
	((lev) == (cur)->bc_nlevels - 1 ? \
		XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur), \
			xfs_bmdr, (lev) == 0) : \
		((cur)->bc_mp->m_bmap_dmxr[(lev) != 0]))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_IMAXRECS)
int xfs_bmap_block_imaxrecs(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_BLOCK_IMAXRECS(lev,cur)	xfs_bmap_block_imaxrecs(lev,cur)
#else
#define XFS_BMAP_BLOCK_IMAXRECS(lev,cur) \
	((lev) == (cur)->bc_nlevels - 1 ? \
		XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur), \
			xfs_bmbt, (lev) == 0) : \
		((cur)->bc_mp->m_bmap_dmxr[(lev) != 0]))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_DMINRECS)
int xfs_bmap_block_dminrecs(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_BLOCK_DMINRECS(lev,cur)	xfs_bmap_block_dminrecs(lev,cur)
#else
#define XFS_BMAP_BLOCK_DMINRECS(lev,cur) \
	((lev) == (cur)->bc_nlevels - 1 ? \
		XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur), \
			xfs_bmdr, (lev) == 0) : \
		((cur)->bc_mp->m_bmap_dmnr[(lev) != 0]))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BLOCK_IMINRECS)
int xfs_bmap_block_iminrecs(int lev, struct xfs_btree_cur *cur);
#define XFS_BMAP_BLOCK_IMINRECS(lev,cur)	xfs_bmap_block_iminrecs(lev,cur)
#else
#define XFS_BMAP_BLOCK_IMINRECS(lev,cur) \
	((lev) == (cur)->bc_nlevels - 1 ? \
		XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur), \
			xfs_bmbt, (lev) == 0) : \
		((cur)->bc_mp->m_bmap_dmnr[(lev) != 0]))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_REC_DADDR)
xfs_bmbt_rec_t *
xfs_bmap_rec_daddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
#define XFS_BMAP_REC_DADDR(bb,i,cur)		xfs_bmap_rec_daddr(bb,i,cur)
#else
#define XFS_BMAP_REC_DADDR(bb,i,cur) \
	XFS_BTREE_REC_ADDR(XFS_BMAP_BLOCK_DSIZE(		\
		INT_GET((bb)->bb_level, ARCH_CONVERT), cur),	\
		xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS(	\
			INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_REC_IADDR)
xfs_bmbt_rec_t *
xfs_bmap_rec_iaddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
#define XFS_BMAP_REC_IADDR(bb,i,cur)		xfs_bmap_rec_iaddr(bb,i,cur)
#else
#define XFS_BMAP_REC_IADDR(bb,i,cur) \
	XFS_BTREE_REC_ADDR(XFS_BMAP_BLOCK_ISIZE(		\
		INT_GET((bb)->bb_level, ARCH_CONVERT), cur),	\
		xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS(	\
			INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_KEY_DADDR)
xfs_bmbt_key_t *
xfs_bmap_key_daddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
#define XFS_BMAP_KEY_DADDR(bb,i,cur)		xfs_bmap_key_daddr(bb,i,cur)
#else
#define XFS_BMAP_KEY_DADDR(bb,i,cur) \
	XFS_BTREE_KEY_ADDR(XFS_BMAP_BLOCK_DSIZE(		\
		INT_GET((bb)->bb_level, ARCH_CONVERT), cur),	\
		xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS(	\
			INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_KEY_IADDR)
xfs_bmbt_key_t *
xfs_bmap_key_iaddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
#define XFS_BMAP_KEY_IADDR(bb,i,cur)		xfs_bmap_key_iaddr(bb,i,cur)
#else
#define XFS_BMAP_KEY_IADDR(bb,i,cur) \
	XFS_BTREE_KEY_ADDR(XFS_BMAP_BLOCK_ISIZE(		\
		INT_GET((bb)->bb_level, ARCH_CONVERT), cur),	\
		xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS(	\
			INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_PTR_DADDR)
xfs_bmbt_ptr_t *
xfs_bmap_ptr_daddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
#define XFS_BMAP_PTR_DADDR(bb,i,cur)		xfs_bmap_ptr_daddr(bb,i,cur)
#else
#define XFS_BMAP_PTR_DADDR(bb,i,cur) \
	XFS_BTREE_PTR_ADDR(XFS_BMAP_BLOCK_DSIZE(		\
		INT_GET((bb)->bb_level, ARCH_CONVERT), cur),	\
		xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS(	\
			INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_PTR_IADDR)
xfs_bmbt_ptr_t *
xfs_bmap_ptr_iaddr(xfs_bmbt_block_t *bb, int i, struct xfs_btree_cur *cur);
#define XFS_BMAP_PTR_IADDR(bb,i,cur)		xfs_bmap_ptr_iaddr(bb,i,cur)
#else
#define XFS_BMAP_PTR_IADDR(bb,i,cur) \
	XFS_BTREE_PTR_ADDR(XFS_BMAP_BLOCK_ISIZE(		\
		INT_GET((bb)->bb_level, ARCH_CONVERT), cur),	\
		xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS(	\
			INT_GET((bb)->bb_level, ARCH_CONVERT), cur))
#endif

/*
 * These are to be used when we know the size of the block and
 * we don't have a cursor.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_REC_ADDR)
xfs_bmbt_rec_t *xfs_bmap_broot_rec_addr(xfs_bmbt_block_t *bb, int i, int sz);
#define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz)	xfs_bmap_broot_rec_addr(bb,i,sz)
#else
#define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz) \
	XFS_BTREE_REC_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_KEY_ADDR)
xfs_bmbt_key_t *xfs_bmap_broot_key_addr(xfs_bmbt_block_t *bb, int i, int sz);
#define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz)	xfs_bmap_broot_key_addr(bb,i,sz)
#else
#define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz) \
	XFS_BTREE_KEY_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_PTR_ADDR)
xfs_bmbt_ptr_t *xfs_bmap_broot_ptr_addr(xfs_bmbt_block_t *bb, int i, int sz);
#define XFS_BMAP_BROOT_PTR_ADDR(bb,i,sz)	xfs_bmap_broot_ptr_addr(bb,i,sz)
#else
#define XFS_BMAP_BROOT_PTR_ADDR(bb,i,sz) \
	XFS_BTREE_PTR_ADDR(sz,xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz))
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_NUMRECS)
int xfs_bmap_broot_numrecs(xfs_bmdr_block_t *bb);
#define XFS_BMAP_BROOT_NUMRECS(bb)		xfs_bmap_broot_numrecs(bb)
#else
#define XFS_BMAP_BROOT_NUMRECS(bb) (INT_GET((bb)->bb_numrecs, ARCH_CONVERT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_MAXRECS)
int xfs_bmap_broot_maxrecs(int sz);
#define XFS_BMAP_BROOT_MAXRECS(sz)		xfs_bmap_broot_maxrecs(sz)
#else
#define XFS_BMAP_BROOT_MAXRECS(sz) XFS_BTREE_BLOCK_MAXRECS(sz,xfs_bmbt,0)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_SPACE_CALC)
int xfs_bmap_broot_space_calc(int nrecs);
#define XFS_BMAP_BROOT_SPACE_CALC(nrecs)	xfs_bmap_broot_space_calc(nrecs)
#else
#define XFS_BMAP_BROOT_SPACE_CALC(nrecs) \
	((int)(sizeof(xfs_bmbt_block_t) + \
	       ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_BROOT_SPACE)
int xfs_bmap_broot_space(xfs_bmdr_block_t *bb);
#define XFS_BMAP_BROOT_SPACE(bb)		xfs_bmap_broot_space(bb)
#else
#define XFS_BMAP_BROOT_SPACE(bb) \
	XFS_BMAP_BROOT_SPACE_CALC(INT_GET((bb)->bb_numrecs, ARCH_CONVERT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMDR_SPACE_CALC)
int xfs_bmdr_space_calc(int nrecs);
#define XFS_BMDR_SPACE_CALC(nrecs)		xfs_bmdr_space_calc(nrecs)
#else
#define XFS_BMDR_SPACE_CALC(nrecs)	\
	((int)(sizeof(xfs_bmdr_block_t) + \
	       ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))))
#endif

/*
 * Maximum number of bmap btree levels.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BM_MAXLEVELS)
int xfs_bm_maxlevels(struct xfs_mount *mp, int w);
#define XFS_BM_MAXLEVELS(mp,w)			xfs_bm_maxlevels(mp,w)
#else
#define XFS_BM_MAXLEVELS(mp,w)		((mp)->m_bm_maxlevels[w])
#endif

#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BMAP_SANITY_CHECK)
int xfs_bmap_sanity_check(struct xfs_mount *mp, xfs_bmbt_block_t *bb,
	int level);
#define XFS_BMAP_SANITY_CHECK(mp,bb,level)	\
	xfs_bmap_sanity_check(mp,bb,level)
#else
#define XFS_BMAP_SANITY_CHECK(mp,bb,level)	\
	(INT_GET((bb)->bb_magic, ARCH_CONVERT) == XFS_BMAP_MAGIC && \
	 INT_GET((bb)->bb_level, ARCH_CONVERT) == level && \
	 INT_GET((bb)->bb_numrecs, ARCH_CONVERT) > 0 && \
	 INT_GET((bb)->bb_numrecs, ARCH_CONVERT) <= (mp)->m_bmap_dmxr[(level) != 0])
#endif


#ifdef __KERNEL__

#if defined(XFS_BMBT_TRACE)
/*
 * Trace buffer entry types.
 */
#define XFS_BMBT_KTRACE_ARGBI	1
#define XFS_BMBT_KTRACE_ARGBII	2
#define XFS_BMBT_KTRACE_ARGFFFI 3
#define XFS_BMBT_KTRACE_ARGI	4
#define XFS_BMBT_KTRACE_ARGIFK	5
#define XFS_BMBT_KTRACE_ARGIFR	6
#define XFS_BMBT_KTRACE_ARGIK	7
#define XFS_BMBT_KTRACE_CUR	8

#define XFS_BMBT_TRACE_SIZE	4096	/* size of global trace buffer */
#define XFS_BMBT_KTRACE_SIZE	32	/* size of per-inode trace buffer */
extern ktrace_t	*xfs_bmbt_trace_buf;
#endif

/*
 * Prototypes for xfs_bmap.c to call.
 */

void
xfs_bmdr_to_bmbt(
	xfs_bmdr_block_t *,
	int,
	xfs_bmbt_block_t *,
	int);

int
xfs_bmbt_decrement(
	struct xfs_btree_cur *,
	int,
	int *);

int
xfs_bmbt_delete(
	struct xfs_btree_cur *,
	int *);

void
xfs_bmbt_get_all(
	xfs_bmbt_rec_t	*r,
	xfs_bmbt_irec_t *s);

xfs_bmbt_block_t *
xfs_bmbt_get_block(
	struct xfs_btree_cur	*cur,
	int			level,
	struct xfs_buf		**bpp);

xfs_filblks_t
xfs_bmbt_get_blockcount(
	xfs_bmbt_rec_t	*r);

xfs_fsblock_t
xfs_bmbt_get_startblock(
	xfs_bmbt_rec_t	*r);

xfs_fileoff_t
xfs_bmbt_get_startoff(
	xfs_bmbt_rec_t	*r);

xfs_exntst_t
xfs_bmbt_get_state(
	xfs_bmbt_rec_t	*r);

#if __BYTE_ORDER != __BIG_ENDIAN
void
xfs_bmbt_disk_get_all(
	xfs_bmbt_rec_t	*r,
	xfs_bmbt_irec_t *s);

xfs_exntst_t
xfs_bmbt_disk_get_state(
	xfs_bmbt_rec_t	*r);

xfs_filblks_t
xfs_bmbt_disk_get_blockcount(
	xfs_bmbt_rec_t	*r);

xfs_fsblock_t
xfs_bmbt_disk_get_startblock(
	xfs_bmbt_rec_t	*r);

xfs_fileoff_t
xfs_bmbt_disk_get_startoff(
	xfs_bmbt_rec_t	*r);

#else
#define xfs_bmbt_disk_get_all(r, s) \
	xfs_bmbt_get_all(r, s)
#define xfs_bmbt_disk_get_state(r) \
	xfs_bmbt_get_state(r)
#define xfs_bmbt_disk_get_blockcount(r) \
	xfs_bmbt_get_blockcount(r)
#define xfs_bmbt_disk_get_startblock(r) \
	xfs_bmbt_get_blockcount(r)
#define xfs_bmbt_disk_get_startoff(r) \
	xfs_bmbt_get_startoff(r)
#endif

int
xfs_bmbt_increment(
	struct xfs_btree_cur *,
	int,
	int *);

int
xfs_bmbt_insert(
	struct xfs_btree_cur *,
	int *);

void
xfs_bmbt_log_block(
	struct xfs_btree_cur *,
	struct xfs_buf *,
	int);

void
xfs_bmbt_log_recs(
	struct xfs_btree_cur *,
	struct xfs_buf *,
	int,
	int);

int
xfs_bmbt_lookup_eq(
	struct xfs_btree_cur *,
	xfs_fileoff_t,
	xfs_fsblock_t,
	xfs_filblks_t,
	int *);

int
xfs_bmbt_lookup_ge(
	struct xfs_btree_cur *,
	xfs_fileoff_t,
	xfs_fsblock_t,
	xfs_filblks_t,
	int *);

/*
 * Give the bmap btree a new root block.  Copy the old broot contents
 * down into a real block and make the broot point to it.
 */
int						/* error */
xfs_bmbt_newroot(
	struct xfs_btree_cur	*cur,		/* btree cursor */
	int			*logflags,	/* logging flags for inode */
	int			*stat);		/* return status - 0 fail */

void
xfs_bmbt_set_all(
	xfs_bmbt_rec_t	*r,
	xfs_bmbt_irec_t *s);

void
xfs_bmbt_set_allf(
	xfs_bmbt_rec_t	*r,
	xfs_fileoff_t	o,
	xfs_fsblock_t	b,
	xfs_filblks_t	c,
	xfs_exntst_t	v);

void
xfs_bmbt_set_blockcount(
	xfs_bmbt_rec_t	*r,
	xfs_filblks_t	v);

void
xfs_bmbt_set_startblock(
	xfs_bmbt_rec_t	*r,
	xfs_fsblock_t	v);

void
xfs_bmbt_set_startoff(
	xfs_bmbt_rec_t	*r,
	xfs_fileoff_t	v);

void
xfs_bmbt_set_state(
	xfs_bmbt_rec_t	*r,
	xfs_exntst_t	v);

#if __BYTE_ORDER != __BIG_ENDIAN
void
xfs_bmbt_disk_set_all(
	xfs_bmbt_rec_t	*r,
	xfs_bmbt_irec_t *s);

void
xfs_bmbt_disk_set_allf(
	xfs_bmbt_rec_t	*r,
	xfs_fileoff_t	o,
	xfs_fsblock_t	b,
	xfs_filblks_t	c,
	xfs_exntst_t	v);
#else
#define xfs_bmbt_disk_set_all(r, s) \
	xfs_bmbt_set_all(r, s)
#define xfs_bmbt_disk_set_allf(r, o, b, c, v) \
	xfs_bmbt_set_allf(r, o, b, c, v)
#endif

void
xfs_bmbt_to_bmdr(
	xfs_bmbt_block_t *,
	int,
	xfs_bmdr_block_t *,
	int);

int
xfs_bmbt_update(
	struct xfs_btree_cur *,
	xfs_fileoff_t,
	xfs_fsblock_t,
	xfs_filblks_t,
	xfs_exntst_t);

#ifdef DEBUG
/*
 * Get the data from the pointed-to record.
 */
int
xfs_bmbt_get_rec(
	struct xfs_btree_cur *,
	xfs_fileoff_t *,
	xfs_fsblock_t *,
	xfs_filblks_t *,
	xfs_exntst_t *,
	int *);
#endif


/*
 * Search an extent list for the extent which includes block
 * bno.
 */
xfs_bmbt_rec_t *
xfs_bmap_do_search_extents(
	xfs_bmbt_rec_t *,
	xfs_extnum_t,
	xfs_extnum_t,
	xfs_fileoff_t,
	int *,
	xfs_extnum_t *,
	xfs_bmbt_irec_t *,
	xfs_bmbt_irec_t *);

#endif	/* __KERNEL__ */

#endif	/* __XFS_BMAP_BTREE_H__ */