| // 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); |
| 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, 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); |
| |
| #endif /* __XFS_IALLOC_BTREE_H__ */ |