1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2000,2002-2005 Silicon Graphics, Inc. 4*4882a593Smuzhiyun * All Rights Reserved. 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #ifndef __XFS_BMAP_BTREE_H__ 7*4882a593Smuzhiyun #define __XFS_BMAP_BTREE_H__ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun struct xfs_btree_cur; 10*4882a593Smuzhiyun struct xfs_btree_block; 11*4882a593Smuzhiyun struct xfs_mount; 12*4882a593Smuzhiyun struct xfs_inode; 13*4882a593Smuzhiyun struct xfs_trans; 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun /* 16*4882a593Smuzhiyun * Btree block header size depends on a superblock flag. 17*4882a593Smuzhiyun */ 18*4882a593Smuzhiyun #define XFS_BMBT_BLOCK_LEN(mp) \ 19*4882a593Smuzhiyun (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \ 20*4882a593Smuzhiyun XFS_BTREE_LBLOCK_CRC_LEN : XFS_BTREE_LBLOCK_LEN) 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #define XFS_BMBT_REC_ADDR(mp, block, index) \ 23*4882a593Smuzhiyun ((xfs_bmbt_rec_t *) \ 24*4882a593Smuzhiyun ((char *)(block) + \ 25*4882a593Smuzhiyun XFS_BMBT_BLOCK_LEN(mp) + \ 26*4882a593Smuzhiyun ((index) - 1) * sizeof(xfs_bmbt_rec_t))) 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun #define XFS_BMBT_KEY_ADDR(mp, block, index) \ 29*4882a593Smuzhiyun ((xfs_bmbt_key_t *) \ 30*4882a593Smuzhiyun ((char *)(block) + \ 31*4882a593Smuzhiyun XFS_BMBT_BLOCK_LEN(mp) + \ 32*4882a593Smuzhiyun ((index) - 1) * sizeof(xfs_bmbt_key_t))) 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #define XFS_BMBT_PTR_ADDR(mp, block, index, maxrecs) \ 35*4882a593Smuzhiyun ((xfs_bmbt_ptr_t *) \ 36*4882a593Smuzhiyun ((char *)(block) + \ 37*4882a593Smuzhiyun XFS_BMBT_BLOCK_LEN(mp) + \ 38*4882a593Smuzhiyun (maxrecs) * sizeof(xfs_bmbt_key_t) + \ 39*4882a593Smuzhiyun ((index) - 1) * sizeof(xfs_bmbt_ptr_t))) 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun #define XFS_BMDR_REC_ADDR(block, index) \ 42*4882a593Smuzhiyun ((xfs_bmdr_rec_t *) \ 43*4882a593Smuzhiyun ((char *)(block) + \ 44*4882a593Smuzhiyun sizeof(struct xfs_bmdr_block) + \ 45*4882a593Smuzhiyun ((index) - 1) * sizeof(xfs_bmdr_rec_t))) 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun #define XFS_BMDR_KEY_ADDR(block, index) \ 48*4882a593Smuzhiyun ((xfs_bmdr_key_t *) \ 49*4882a593Smuzhiyun ((char *)(block) + \ 50*4882a593Smuzhiyun sizeof(struct xfs_bmdr_block) + \ 51*4882a593Smuzhiyun ((index) - 1) * sizeof(xfs_bmdr_key_t))) 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun #define XFS_BMDR_PTR_ADDR(block, index, maxrecs) \ 54*4882a593Smuzhiyun ((xfs_bmdr_ptr_t *) \ 55*4882a593Smuzhiyun ((char *)(block) + \ 56*4882a593Smuzhiyun sizeof(struct xfs_bmdr_block) + \ 57*4882a593Smuzhiyun (maxrecs) * sizeof(xfs_bmdr_key_t) + \ 58*4882a593Smuzhiyun ((index) - 1) * sizeof(xfs_bmdr_ptr_t))) 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun /* 61*4882a593Smuzhiyun * These are to be used when we know the size of the block and 62*4882a593Smuzhiyun * we don't have a cursor. 63*4882a593Smuzhiyun */ 64*4882a593Smuzhiyun #define XFS_BMAP_BROOT_PTR_ADDR(mp, bb, i, sz) \ 65*4882a593Smuzhiyun XFS_BMBT_PTR_ADDR(mp, bb, i, xfs_bmbt_maxrecs(mp, sz, 0)) 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun #define XFS_BMAP_BROOT_SPACE_CALC(mp, nrecs) \ 68*4882a593Smuzhiyun (int)(XFS_BMBT_BLOCK_LEN(mp) + \ 69*4882a593Smuzhiyun ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))) 70*4882a593Smuzhiyun 71*4882a593Smuzhiyun #define XFS_BMAP_BROOT_SPACE(mp, bb) \ 72*4882a593Smuzhiyun (XFS_BMAP_BROOT_SPACE_CALC(mp, be16_to_cpu((bb)->bb_numrecs))) 73*4882a593Smuzhiyun #define XFS_BMDR_SPACE_CALC(nrecs) \ 74*4882a593Smuzhiyun (int)(sizeof(xfs_bmdr_block_t) + \ 75*4882a593Smuzhiyun ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))) 76*4882a593Smuzhiyun #define XFS_BMAP_BMDR_SPACE(bb) \ 77*4882a593Smuzhiyun (XFS_BMDR_SPACE_CALC(be16_to_cpu((bb)->bb_numrecs))) 78*4882a593Smuzhiyun 79*4882a593Smuzhiyun /* 80*4882a593Smuzhiyun * Maximum number of bmap btree levels. 81*4882a593Smuzhiyun */ 82*4882a593Smuzhiyun #define XFS_BM_MAXLEVELS(mp,w) ((mp)->m_bm_maxlevels[(w)]) 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun /* 85*4882a593Smuzhiyun * Prototypes for xfs_bmap.c to call. 86*4882a593Smuzhiyun */ 87*4882a593Smuzhiyun extern void xfs_bmdr_to_bmbt(struct xfs_inode *, xfs_bmdr_block_t *, int, 88*4882a593Smuzhiyun struct xfs_btree_block *, int); 89*4882a593Smuzhiyun 90*4882a593Smuzhiyun void xfs_bmbt_disk_set_all(struct xfs_bmbt_rec *r, struct xfs_bmbt_irec *s); 91*4882a593Smuzhiyun extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(xfs_bmbt_rec_t *r); 92*4882a593Smuzhiyun extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(xfs_bmbt_rec_t *r); 93*4882a593Smuzhiyun extern void xfs_bmbt_disk_get_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s); 94*4882a593Smuzhiyun 95*4882a593Smuzhiyun extern void xfs_bmbt_to_bmdr(struct xfs_mount *, struct xfs_btree_block *, int, 96*4882a593Smuzhiyun xfs_bmdr_block_t *, int); 97*4882a593Smuzhiyun 98*4882a593Smuzhiyun extern int xfs_bmbt_get_maxrecs(struct xfs_btree_cur *, int level); 99*4882a593Smuzhiyun extern int xfs_bmdr_maxrecs(int blocklen, int leaf); 100*4882a593Smuzhiyun extern int xfs_bmbt_maxrecs(struct xfs_mount *, int blocklen, int leaf); 101*4882a593Smuzhiyun 102*4882a593Smuzhiyun extern int xfs_bmbt_change_owner(struct xfs_trans *tp, struct xfs_inode *ip, 103*4882a593Smuzhiyun int whichfork, xfs_ino_t new_owner, 104*4882a593Smuzhiyun struct list_head *buffer_list); 105*4882a593Smuzhiyun 106*4882a593Smuzhiyun extern struct xfs_btree_cur *xfs_bmbt_init_cursor(struct xfs_mount *, 107*4882a593Smuzhiyun struct xfs_trans *, struct xfs_inode *, int); 108*4882a593Smuzhiyun 109*4882a593Smuzhiyun extern unsigned long long xfs_bmbt_calc_size(struct xfs_mount *mp, 110*4882a593Smuzhiyun unsigned long long len); 111*4882a593Smuzhiyun 112*4882a593Smuzhiyun #endif /* __XFS_BMAP_BTREE_H__ */ 113