1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2017 Oracle. All Rights Reserved. 4 * Author: Darrick J. Wong <darrick.wong@oracle.com> 5 */ 6 #ifndef __XFS_SCRUB_BTREE_H__ 7 #define __XFS_SCRUB_BTREE_H__ 8 9 /* btree scrub */ 10 11 /* Check for btree operation errors. */ 12 bool xchk_btree_process_error(struct xfs_scrub *sc, 13 struct xfs_btree_cur *cur, int level, int *error); 14 15 /* Check for btree xref operation errors. */ 16 bool xchk_btree_xref_process_error(struct xfs_scrub *sc, 17 struct xfs_btree_cur *cur, int level, int *error); 18 19 /* Check for btree corruption. */ 20 void xchk_btree_set_corrupt(struct xfs_scrub *sc, 21 struct xfs_btree_cur *cur, int level); 22 23 /* Check for btree xref discrepancies. */ 24 void xchk_btree_xref_set_corrupt(struct xfs_scrub *sc, 25 struct xfs_btree_cur *cur, int level); 26 27 struct xchk_btree; 28 typedef int (*xchk_btree_rec_fn)( 29 struct xchk_btree *bs, 30 const union xfs_btree_rec *rec); 31 32 struct xchk_btree { 33 /* caller-provided scrub state */ 34 struct xfs_scrub *sc; 35 struct xfs_btree_cur *cur; 36 xchk_btree_rec_fn scrub_rec; 37 const struct xfs_owner_info *oinfo; 38 void *private; 39 40 /* internal scrub state */ 41 union xfs_btree_rec lastrec; 42 struct list_head to_check; 43 44 /* this element must come last! */ 45 union xfs_btree_key lastkey[]; 46 }; 47 48 /* 49 * Calculate the size of a xchk_btree structure. There are nlevels-1 slots for 50 * keys because we track leaf records separately in lastrec. 51 */ 52 static inline size_t 53 xchk_btree_sizeof(unsigned int nlevels) 54 { 55 return struct_size((struct xchk_btree *)NULL, lastkey, nlevels - 1); 56 } 57 58 int xchk_btree(struct xfs_scrub *sc, struct xfs_btree_cur *cur, 59 xchk_btree_rec_fn scrub_fn, const struct xfs_owner_info *oinfo, 60 void *private); 61 62 #endif /* __XFS_SCRUB_BTREE_H__ */ 63