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77 lines
2.3 KiB
77 lines
2.3 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (c) 2000,2005 Silicon Graphics, Inc. |
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* All Rights Reserved. |
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*/ |
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#ifndef __XFS_IALLOC_BTREE_H__ |
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#define __XFS_IALLOC_BTREE_H__ |
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/* |
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* Inode map on-disk structures |
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*/ |
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struct xfs_buf; |
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struct xfs_btree_cur; |
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struct xfs_mount; |
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/* |
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* Btree block header size depends on a superblock flag. |
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*/ |
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#define XFS_INOBT_BLOCK_LEN(mp) \ |
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(xfs_sb_version_hascrc(&((mp)->m_sb)) ? \ |
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XFS_BTREE_SBLOCK_CRC_LEN : XFS_BTREE_SBLOCK_LEN) |
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/* |
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* Record, key, and pointer address macros for btree blocks. |
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* |
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* (note that some of these may appear unused, but they are used in userspace) |
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*/ |
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#define XFS_INOBT_REC_ADDR(mp, block, index) \ |
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((xfs_inobt_rec_t *) \ |
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((char *)(block) + \ |
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XFS_INOBT_BLOCK_LEN(mp) + \ |
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(((index) - 1) * sizeof(xfs_inobt_rec_t)))) |
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#define XFS_INOBT_KEY_ADDR(mp, block, index) \ |
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((xfs_inobt_key_t *) \ |
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((char *)(block) + \ |
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XFS_INOBT_BLOCK_LEN(mp) + \ |
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((index) - 1) * sizeof(xfs_inobt_key_t))) |
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#define XFS_INOBT_PTR_ADDR(mp, block, index, maxrecs) \ |
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((xfs_inobt_ptr_t *) \ |
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((char *)(block) + \ |
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XFS_INOBT_BLOCK_LEN(mp) + \ |
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(maxrecs) * sizeof(xfs_inobt_key_t) + \ |
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((index) - 1) * sizeof(xfs_inobt_ptr_t))) |
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extern struct xfs_btree_cur *xfs_inobt_init_cursor(struct xfs_mount *, |
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struct xfs_trans *, struct xfs_buf *, xfs_agnumber_t, |
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xfs_btnum_t); |
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struct xfs_btree_cur *xfs_inobt_stage_cursor(struct xfs_mount *mp, |
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struct xbtree_afakeroot *afake, xfs_agnumber_t agno, |
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xfs_btnum_t btnum); |
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extern int xfs_inobt_maxrecs(struct xfs_mount *, int, int); |
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/* ir_holemask to inode allocation bitmap conversion */ |
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uint64_t xfs_inobt_irec_to_allocmask(struct xfs_inobt_rec_incore *); |
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#if defined(DEBUG) || defined(XFS_WARN) |
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int xfs_inobt_rec_check_count(struct xfs_mount *, |
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struct xfs_inobt_rec_incore *); |
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#else |
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#define xfs_inobt_rec_check_count(mp, rec) 0 |
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#endif /* DEBUG */ |
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int xfs_finobt_calc_reserves(struct xfs_mount *mp, struct xfs_trans *tp, |
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xfs_agnumber_t agno, xfs_extlen_t *ask, xfs_extlen_t *used); |
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extern xfs_extlen_t xfs_iallocbt_calc_size(struct xfs_mount *mp, |
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unsigned long long len); |
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int xfs_inobt_cur(struct xfs_mount *mp, struct xfs_trans *tp, |
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xfs_agnumber_t agno, xfs_btnum_t btnum, |
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struct xfs_btree_cur **curpp, struct xfs_buf **agi_bpp); |
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void xfs_inobt_commit_staged_btree(struct xfs_btree_cur *cur, |
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struct xfs_trans *tp, struct xfs_buf *agbp); |
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#endif /* __XFS_IALLOC_BTREE_H__ */
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