fs/xfs/scrub/btree.h

   1 /*
   2  * Copyright (C) 2017 Oracle.  All Rights Reserved.
   3  *
   4  * Author: Darrick J. Wong <darrick.wong@oracle.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it would be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write the Free Software Foundation,
  18  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA.
  19  */
  20 #ifndef __XFS_SCRUB_BTREE_H__
  21 #define __XFS_SCRUB_BTREE_H__
  22
  23 /* btree scrub */
  24
  25 /* Check for btree operation errors. */
  26 bool xfs_scrub_btree_process_error(struct xfs_scrub_context *sc,
  27                 struct xfs_btree_cur *cur, int level, int *error);
  28
  29 /* Check for btree xref operation errors. */
  30 bool xfs_scrub_btree_xref_process_error(struct xfs_scrub_context *sc,
  31                                 struct xfs_btree_cur *cur, int level,
  32                                 int *error);
  33
  34 /* Check for btree corruption. */
  35 void xfs_scrub_btree_set_corrupt(struct xfs_scrub_context *sc,
  36                 struct xfs_btree_cur *cur, int level);
  37
  38 /* Check for btree xref discrepancies. */
  39 void xfs_scrub_btree_xref_set_corrupt(struct xfs_scrub_context *sc,
  40                 struct xfs_btree_cur *cur, int level);
  41
  42 struct xfs_scrub_btree;
  43 typedef int (*xfs_scrub_btree_rec_fn)(
  44         struct xfs_scrub_btree  *bs,
  45         union xfs_btree_rec     *rec);
  46
  47 struct xfs_scrub_btree {
  48         /* caller-provided scrub state */
  49         struct xfs_scrub_context        *sc;
  50         struct xfs_btree_cur            *cur;
  51         xfs_scrub_btree_rec_fn          scrub_rec;
  52         struct xfs_owner_info           *oinfo;
  53         void                            *private;
  54
  55         /* internal scrub state */
  56         union xfs_btree_rec             lastrec;
  57         bool                            firstrec;
  58         union xfs_btree_key             lastkey[XFS_BTREE_MAXLEVELS];
  59         bool                            firstkey[XFS_BTREE_MAXLEVELS];
  60         struct list_head                to_check;
  61 };
  62 int xfs_scrub_btree(struct xfs_scrub_context *sc, struct xfs_btree_cur *cur,
  63                     xfs_scrub_btree_rec_fn scrub_fn,
  64                     struct xfs_owner_info *oinfo, void *private);
  65
  66 #endif /* __XFS_SCRUB_BTREE_H__ */