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