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/*
* Copyright (C) 2017 Oracle. All Rights Reserved.
*
* Author: Darrick J. Wong <darrick.wong@oracle.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __XFS_SCRUB_SCRUB_H__
#define __XFS_SCRUB_SCRUB_H__
struct xfs_scrub_context;
/* Type info and names for the scrub types. */
enum xfs_scrub_type {
ST_NONE = 1, /* disabled */
ST_PERAG, /* per-AG metadata */
ST_FS, /* per-FS metadata */
ST_INODE, /* per-inode metadata */
};
struct xfs_scrub_meta_ops {
/* Acquire whatever resources are needed for the operation. */
int (*setup)(struct xfs_scrub_context *,
struct xfs_inode *);
/* Examine metadata for errors. */
int (*scrub)(struct xfs_scrub_context *);
/* Decide if we even have this piece of metadata. */
bool (*has)(struct xfs_sb *);
/* type describing required/allowed inputs */
enum xfs_scrub_type type;
};
/* Buffer pointers and btree cursors for an entire AG. */
struct xfs_scrub_ag {
xfs_agnumber_t agno;
/* AG btree roots */
struct xfs_buf *agf_bp;
struct xfs_buf *agfl_bp;
struct xfs_buf *agi_bp;
/* AG btrees */
struct xfs_btree_cur *bno_cur;
struct xfs_btree_cur *cnt_cur;
struct xfs_btree_cur *ino_cur;
struct xfs_btree_cur *fino_cur;
struct xfs_btree_cur *rmap_cur;
struct xfs_btree_cur *refc_cur;
};
struct xfs_scrub_context {
/* General scrub state. */
struct xfs_mount *mp;
struct xfs_scrub_metadata *sm;
const struct xfs_scrub_meta_ops *ops;
struct xfs_trans *tp;
struct xfs_inode *ip;
void *buf;
uint ilock_flags;
bool try_harder;
bool has_quotaofflock;
/* State tracking for single-AG operations. */
struct xfs_scrub_ag sa;
};
/* Metadata scrubbers */
int xfs_scrub_tester(struct xfs_scrub_context *sc);
int xfs_scrub_superblock(struct xfs_scrub_context *sc);
int xfs_scrub_agf(struct xfs_scrub_context *sc);
int xfs_scrub_agfl(struct xfs_scrub_context *sc);
int xfs_scrub_agi(struct xfs_scrub_context *sc);
int xfs_scrub_bnobt(struct xfs_scrub_context *sc);
int xfs_scrub_cntbt(struct xfs_scrub_context *sc);
int xfs_scrub_inobt(struct xfs_scrub_context *sc);
int xfs_scrub_finobt(struct xfs_scrub_context *sc);
int xfs_scrub_rmapbt(struct xfs_scrub_context *sc);
int xfs_scrub_refcountbt(struct xfs_scrub_context *sc);
int xfs_scrub_inode(struct xfs_scrub_context *sc);
int xfs_scrub_bmap_data(struct xfs_scrub_context *sc);
int xfs_scrub_bmap_attr(struct xfs_scrub_context *sc);
int xfs_scrub_bmap_cow(struct xfs_scrub_context *sc);
int xfs_scrub_directory(struct xfs_scrub_context *sc);
int xfs_scrub_xattr(struct xfs_scrub_context *sc);
int xfs_scrub_symlink(struct xfs_scrub_context *sc);
int xfs_scrub_parent(struct xfs_scrub_context *sc);
#ifdef CONFIG_XFS_RT
int xfs_scrub_rtbitmap(struct xfs_scrub_context *sc);
int xfs_scrub_rtsummary(struct xfs_scrub_context *sc);
#else
static inline int
xfs_scrub_rtbitmap(struct xfs_scrub_context *sc)
{
return -ENOENT;
}
static inline int
xfs_scrub_rtsummary(struct xfs_scrub_context *sc)
{
return -ENOENT;
}
#endif
#ifdef CONFIG_XFS_QUOTA
int xfs_scrub_quota(struct xfs_scrub_context *sc);
#else
static inline int
xfs_scrub_quota(struct xfs_scrub_context *sc)
{
return -ENOENT;
}
#endif
/* cross-referencing helpers */
void xfs_scrub_xref_is_used_space(struct xfs_scrub_context *sc,
xfs_agblock_t agbno, xfs_extlen_t len);
void xfs_scrub_xref_is_not_inode_chunk(struct xfs_scrub_context *sc,
xfs_agblock_t agbno, xfs_extlen_t len);
void xfs_scrub_xref_is_inode_chunk(struct xfs_scrub_context *sc,
xfs_agblock_t agbno, xfs_extlen_t len);
void xfs_scrub_xref_is_owned_by(struct xfs_scrub_context *sc,
xfs_agblock_t agbno, xfs_extlen_t len,
struct xfs_owner_info *oinfo);
void xfs_scrub_xref_is_not_owned_by(struct xfs_scrub_context *sc,
xfs_agblock_t agbno, xfs_extlen_t len,
struct xfs_owner_info *oinfo);
void xfs_scrub_xref_has_no_owner(struct xfs_scrub_context *sc,
xfs_agblock_t agbno, xfs_extlen_t len);
void xfs_scrub_xref_is_cow_staging(struct xfs_scrub_context *sc,
xfs_agblock_t bno, xfs_extlen_t len);
void xfs_scrub_xref_is_not_shared(struct xfs_scrub_context *sc,
xfs_agblock_t bno, xfs_extlen_t len);
#ifdef CONFIG_XFS_RT
void xfs_scrub_xref_is_used_rt_space(struct xfs_scrub_context *sc,
xfs_rtblock_t rtbno, xfs_extlen_t len);
#else
# define xfs_scrub_xref_is_used_rt_space(sc, rtbno, len) do { } while (0)
#endif
#endif /* __XFS_SCRUB_SCRUB_H__ */
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