projects / thirdparty / xfsprogs-dev.git / blame
| Commit | Line | Data |
|---|---|---|
| 37b3b4d6 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2bd0ea18 | 2 | /* |
| f302e9e4 NS |
3 | * Copyright (c) 2000,2005 Silicon Graphics, Inc. |
| 4 | * All Rights Reserved. | |
| 2bd0ea18 NS |
5 | */ |
| 6 | #ifndef __XFS_ALLOC_BTREE_H__ | |
| dfc130f3 | 7 | #define __XFS_ALLOC_BTREE_H__ |
| 2bd0ea18 NS |
8 | |
| 9 | /* | |
| 10 | * Freespace on-disk structures | |
| 11 | */ | |
| 12 | ||
| 13 | struct xfs_buf; | |
| 14 | struct xfs_btree_cur; | |
| 2bd0ea18 NS |
15 | struct xfs_mount; |
| 16 | ||
| 2bd0ea18 | 17 | /* |
| b3563c19 | 18 | * Btree block header size depends on a superblock flag. |
| 2bd0ea18 | 19 | */ |
| 5dfa5cd2 DC |
20 | #define XFS_ALLOC_BLOCK_LEN(mp) \ |
| 21 | (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \ | |
| 79737cd9 | 22 | XFS_BTREE_SBLOCK_CRC_LEN : XFS_BTREE_SBLOCK_LEN) |
| 2bd0ea18 | 23 | |
| b3563c19 BN |
24 | /* |
| 25 | * Record, key, and pointer address macros for btree blocks. | |
| 26 | * | |
| 27 | * (note that some of these may appear unused, but they are used in userspace) | |
| 28 | */ | |
| 29 | #define XFS_ALLOC_REC_ADDR(mp, block, index) \ | |
| 30 | ((xfs_alloc_rec_t *) \ | |
| 31 | ((char *)(block) + \ | |
| 32 | XFS_ALLOC_BLOCK_LEN(mp) + \ | |
| 33 | (((index) - 1) * sizeof(xfs_alloc_rec_t)))) | |
| 34 | ||
| 35 | #define XFS_ALLOC_KEY_ADDR(mp, block, index) \ | |
| 36 | ((xfs_alloc_key_t *) \ | |
| 37 | ((char *)(block) + \ | |
| 38 | XFS_ALLOC_BLOCK_LEN(mp) + \ | |
| 39 | ((index) - 1) * sizeof(xfs_alloc_key_t))) | |
| 40 | ||
| 41 | #define XFS_ALLOC_PTR_ADDR(mp, block, index, maxrecs) \ | |
| 42 | ((xfs_alloc_ptr_t *) \ | |
| 43 | ((char *)(block) + \ | |
| 44 | XFS_ALLOC_BLOCK_LEN(mp) + \ | |
| 45 | (maxrecs) * sizeof(xfs_alloc_key_t) + \ | |
| 46 | ((index) - 1) * sizeof(xfs_alloc_ptr_t))) | |
| 2bd0ea18 | 47 | |
| b194c7d8 BN |
48 | extern struct xfs_btree_cur *xfs_allocbt_init_cursor(struct xfs_mount *, |
| 49 | struct xfs_trans *, struct xfs_buf *, | |
| 50 | xfs_agnumber_t, xfs_btnum_t); | |
| b3563c19 | 51 | extern int xfs_allocbt_maxrecs(struct xfs_mount *, int, int); |
| 5f728383 DW |
52 | extern xfs_extlen_t xfs_allocbt_calc_size(struct xfs_mount *mp, |
| 53 | unsigned long long len); | |
| 2bd0ea18 NS |
54 | |
| 55 | #endif /* __XFS_ALLOC_BTREE_H__ */ |