linux/fs/xfs/scrub/agheader.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2017-2023 Oracle.  All Rights Reserved.
 * Author: Darrick J. Wong <[email protected]>
 */
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_btree.h"
#include "xfs_sb.h"
#include "xfs_alloc.h"
#include "xfs_ialloc.h"
#include "xfs_rmap.h"
#include "xfs_ag.h"
#include "xfs_inode.h"
#include "scrub/scrub.h"
#include "scrub/common.h"

int
xchk_setup_agheader(
	struct xfs_scrub	*sc)
{ … }

/* Superblock */

/* Cross-reference with the other btrees. */
STATIC void
xchk_superblock_xref(
	struct xfs_scrub	*sc,
	struct xfs_buf		*bp)
{ … }

/*
 * Scrub the filesystem superblock.
 *
 * Note: We do /not/ attempt to check AG 0's superblock.  Mount is
 * responsible for validating all the geometry information in sb 0, so
 * if the filesystem is capable of initiating online scrub, then clearly
 * sb 0 is ok and we can use its information to check everything else.
 */
int
xchk_superblock(
	struct xfs_scrub	*sc)
{ … }

/* AGF */

/* Tally freespace record lengths. */
STATIC int
xchk_agf_record_bno_lengths(
	struct xfs_btree_cur		*cur,
	const struct xfs_alloc_rec_incore *rec,
	void				*priv)
{ … }

/* Check agf_freeblks */
static inline void
xchk_agf_xref_freeblks(
	struct xfs_scrub	*sc)
{ … }

/* Cross reference the AGF with the cntbt (freespace by length btree) */
static inline void
xchk_agf_xref_cntbt(
	struct xfs_scrub	*sc)
{ … }

/* Check the btree block counts in the AGF against the btrees. */
STATIC void
xchk_agf_xref_btreeblks(
	struct xfs_scrub	*sc)
{ … }

/* Check agf_refcount_blocks against tree size */
static inline void
xchk_agf_xref_refcblks(
	struct xfs_scrub	*sc)
{ … }

/* Cross-reference with the other btrees. */
STATIC void
xchk_agf_xref(
	struct xfs_scrub	*sc)
{ … }

/* Scrub the AGF. */
int
xchk_agf(
	struct xfs_scrub	*sc)
{ … }

/* AGFL */

struct xchk_agfl_info { … };

/* Cross-reference with the other btrees. */
STATIC void
xchk_agfl_block_xref(
	struct xfs_scrub	*sc,
	xfs_agblock_t		agbno)
{ … }

/* Scrub an AGFL block. */
STATIC int
xchk_agfl_block(
	struct xfs_mount	*mp,
	xfs_agblock_t		agbno,
	void			*priv)
{ … }

static int
xchk_agblock_cmp(
	const void		*pa,
	const void		*pb)
{ … }

/* Cross-reference with the other btrees. */
STATIC void
xchk_agfl_xref(
	struct xfs_scrub	*sc)
{ … }

/* Scrub the AGFL. */
int
xchk_agfl(
	struct xfs_scrub	*sc)
{ … }

/* AGI */

/* Check agi_count/agi_freecount */
static inline void
xchk_agi_xref_icounts(
	struct xfs_scrub	*sc)
{ … }

/* Check agi_[fi]blocks against tree size */
static inline void
xchk_agi_xref_fiblocks(
	struct xfs_scrub	*sc)
{ … }

/* Cross-reference with the other btrees. */
STATIC void
xchk_agi_xref(
	struct xfs_scrub	*sc)
{ … }

/*
 * Check the unlinked buckets for links to bad inodes.  We hold the AGI, so
 * there cannot be any threads updating unlinked list pointers in this AG.
 */
STATIC void
xchk_iunlink(
	struct xfs_scrub	*sc,
	struct xfs_agi		*agi)
{ … }

/* Scrub the AGI. */
int
xchk_agi(
	struct xfs_scrub	*sc)
{ … }