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37b3b4d6 | 1 | // SPDX-License-Identifier: GPL-2.0 |
2bd0ea18 | 2 | /* |
f302e9e4 NS |
3 | * Copyright (c) 2000,2002-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
2bd0ea18 NS |
5 | */ |
6 | #ifndef __XFS_BMAP_BTREE_H__ | |
5000d01d | 7 | #define __XFS_BMAP_BTREE_H__ |
2bd0ea18 | 8 | |
2bd0ea18 | 9 | struct xfs_btree_cur; |
b3563c19 | 10 | struct xfs_btree_block; |
2bd0ea18 NS |
11 | struct xfs_mount; |
12 | struct xfs_inode; | |
b194c7d8 | 13 | struct xfs_trans; |
2bd0ea18 | 14 | |
b3563c19 BN |
15 | /* |
16 | * Btree block header size depends on a superblock flag. | |
b3563c19 | 17 | */ |
5dfa5cd2 DC |
18 | #define XFS_BMBT_BLOCK_LEN(mp) \ |
19 | (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \ | |
79737cd9 | 20 | XFS_BTREE_LBLOCK_CRC_LEN : XFS_BTREE_LBLOCK_LEN) |
b3563c19 BN |
21 | |
22 | #define XFS_BMBT_REC_ADDR(mp, block, index) \ | |
23 | ((xfs_bmbt_rec_t *) \ | |
24 | ((char *)(block) + \ | |
25 | XFS_BMBT_BLOCK_LEN(mp) + \ | |
26 | ((index) - 1) * sizeof(xfs_bmbt_rec_t))) | |
27 | ||
28 | #define XFS_BMBT_KEY_ADDR(mp, block, index) \ | |
29 | ((xfs_bmbt_key_t *) \ | |
30 | ((char *)(block) + \ | |
31 | XFS_BMBT_BLOCK_LEN(mp) + \ | |
32 | ((index) - 1) * sizeof(xfs_bmbt_key_t))) | |
33 | ||
34 | #define XFS_BMBT_PTR_ADDR(mp, block, index, maxrecs) \ | |
35 | ((xfs_bmbt_ptr_t *) \ | |
36 | ((char *)(block) + \ | |
37 | XFS_BMBT_BLOCK_LEN(mp) + \ | |
38 | (maxrecs) * sizeof(xfs_bmbt_key_t) + \ | |
39 | ((index) - 1) * sizeof(xfs_bmbt_ptr_t))) | |
40 | ||
41 | #define XFS_BMDR_REC_ADDR(block, index) \ | |
42 | ((xfs_bmdr_rec_t *) \ | |
43 | ((char *)(block) + \ | |
44 | sizeof(struct xfs_bmdr_block) + \ | |
45 | ((index) - 1) * sizeof(xfs_bmdr_rec_t))) | |
46 | ||
47 | #define XFS_BMDR_KEY_ADDR(block, index) \ | |
48 | ((xfs_bmdr_key_t *) \ | |
49 | ((char *)(block) + \ | |
50 | sizeof(struct xfs_bmdr_block) + \ | |
51 | ((index) - 1) * sizeof(xfs_bmdr_key_t))) | |
52 | ||
53 | #define XFS_BMDR_PTR_ADDR(block, index, maxrecs) \ | |
54 | ((xfs_bmdr_ptr_t *) \ | |
55 | ((char *)(block) + \ | |
56 | sizeof(struct xfs_bmdr_block) + \ | |
57 | (maxrecs) * sizeof(xfs_bmdr_key_t) + \ | |
58 | ((index) - 1) * sizeof(xfs_bmdr_ptr_t))) | |
2bd0ea18 NS |
59 | |
60 | /* | |
61 | * These are to be used when we know the size of the block and | |
62 | * we don't have a cursor. | |
63 | */ | |
b3563c19 BN |
64 | #define XFS_BMAP_BROOT_PTR_ADDR(mp, bb, i, sz) \ |
65 | XFS_BMBT_PTR_ADDR(mp, bb, i, xfs_bmbt_maxrecs(mp, sz, 0)) | |
2bd0ea18 | 66 | |
5dfa5cd2 DC |
67 | #define XFS_BMAP_BROOT_SPACE_CALC(mp, nrecs) \ |
68 | (int)(XFS_BMBT_BLOCK_LEN(mp) + \ | |
f302e9e4 NS |
69 | ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))) |
70 | ||
5dfa5cd2 DC |
71 | #define XFS_BMAP_BROOT_SPACE(mp, bb) \ |
72 | (XFS_BMAP_BROOT_SPACE_CALC(mp, be16_to_cpu((bb)->bb_numrecs))) | |
f302e9e4 NS |
73 | #define XFS_BMDR_SPACE_CALC(nrecs) \ |
74 | (int)(sizeof(xfs_bmdr_block_t) + \ | |
75 | ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))) | |
5d90ab5a DC |
76 | #define XFS_BMAP_BMDR_SPACE(bb) \ |
77 | (XFS_BMDR_SPACE_CALC(be16_to_cpu((bb)->bb_numrecs))) | |
2bd0ea18 NS |
78 | |
79 | /* | |
80 | * Maximum number of bmap btree levels. | |
81 | */ | |
f302e9e4 | 82 | #define XFS_BM_MAXLEVELS(mp,w) ((mp)->m_bm_maxlevels[(w)]) |
2bd0ea18 | 83 | |
2bd0ea18 NS |
84 | /* |
85 | * Prototypes for xfs_bmap.c to call. | |
86 | */ | |
5dfa5cd2 | 87 | extern void xfs_bmdr_to_bmbt(struct xfs_inode *, xfs_bmdr_block_t *, int, |
b3563c19 | 88 | struct xfs_btree_block *, int); |
f302e9e4 | 89 | |
d0e5f1ff | 90 | void xfs_bmbt_disk_set_all(struct xfs_bmbt_rec *r, struct xfs_bmbt_irec *s); |
f302e9e4 | 91 | extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(xfs_bmbt_rec_t *r); |
f302e9e4 | 92 | extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(xfs_bmbt_rec_t *r); |
b37d753d | 93 | extern void xfs_bmbt_disk_get_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s); |
f302e9e4 | 94 | |
b3563c19 BN |
95 | extern void xfs_bmbt_to_bmdr(struct xfs_mount *, struct xfs_btree_block *, int, |
96 | xfs_bmdr_block_t *, int); | |
97 | ||
98 | extern int xfs_bmbt_get_maxrecs(struct xfs_btree_cur *, int level); | |
ff105f75 | 99 | extern int xfs_bmdr_maxrecs(int blocklen, int leaf); |
b3563c19 | 100 | extern int xfs_bmbt_maxrecs(struct xfs_mount *, int blocklen, int leaf); |
b194c7d8 | 101 | |
9c6ebc42 DC |
102 | extern int xfs_bmbt_change_owner(struct xfs_trans *tp, struct xfs_inode *ip, |
103 | int whichfork, xfs_ino_t new_owner, | |
104 | struct list_head *buffer_list); | |
105 | ||
b194c7d8 BN |
106 | extern struct xfs_btree_cur *xfs_bmbt_init_cursor(struct xfs_mount *, |
107 | struct xfs_trans *, struct xfs_inode *, int); | |
2bd0ea18 | 108 | |
5f728383 DW |
109 | extern unsigned long long xfs_bmbt_calc_size(struct xfs_mount *mp, |
110 | unsigned long long len); | |
111 | ||
2bd0ea18 | 112 | #endif /* __XFS_BMAP_BTREE_H__ */ |