mirror of https://gitee.com/openkylin/linux.git
167 lines
3.5 KiB
C
167 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2017 Oracle. All Rights Reserved.
|
|
* Author: Darrick J. Wong <darrick.wong@oracle.com>
|
|
*/
|
|
#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_defer.h"
|
|
#include "xfs_btree.h"
|
|
#include "xfs_bit.h"
|
|
#include "xfs_log_format.h"
|
|
#include "xfs_trans.h"
|
|
#include "xfs_sb.h"
|
|
#include "xfs_alloc.h"
|
|
#include "xfs_rmap.h"
|
|
#include "scrub/xfs_scrub.h"
|
|
#include "scrub/scrub.h"
|
|
#include "scrub/common.h"
|
|
#include "scrub/btree.h"
|
|
#include "scrub/trace.h"
|
|
|
|
/*
|
|
* Set us up to scrub free space btrees.
|
|
*/
|
|
int
|
|
xchk_setup_ag_allocbt(
|
|
struct xfs_scrub *sc,
|
|
struct xfs_inode *ip)
|
|
{
|
|
return xchk_setup_ag_btree(sc, ip, false);
|
|
}
|
|
|
|
/* Free space btree scrubber. */
|
|
/*
|
|
* Ensure there's a corresponding cntbt/bnobt record matching this
|
|
* bnobt/cntbt record, respectively.
|
|
*/
|
|
STATIC void
|
|
xchk_allocbt_xref_other(
|
|
struct xfs_scrub *sc,
|
|
xfs_agblock_t agbno,
|
|
xfs_extlen_t len)
|
|
{
|
|
struct xfs_btree_cur **pcur;
|
|
xfs_agblock_t fbno;
|
|
xfs_extlen_t flen;
|
|
int has_otherrec;
|
|
int error;
|
|
|
|
if (sc->sm->sm_type == XFS_SCRUB_TYPE_BNOBT)
|
|
pcur = &sc->sa.cnt_cur;
|
|
else
|
|
pcur = &sc->sa.bno_cur;
|
|
if (!*pcur || xchk_skip_xref(sc->sm))
|
|
return;
|
|
|
|
error = xfs_alloc_lookup_le(*pcur, agbno, len, &has_otherrec);
|
|
if (!xchk_should_check_xref(sc, &error, pcur))
|
|
return;
|
|
if (!has_otherrec) {
|
|
xchk_btree_xref_set_corrupt(sc, *pcur, 0);
|
|
return;
|
|
}
|
|
|
|
error = xfs_alloc_get_rec(*pcur, &fbno, &flen, &has_otherrec);
|
|
if (!xchk_should_check_xref(sc, &error, pcur))
|
|
return;
|
|
if (!has_otherrec) {
|
|
xchk_btree_xref_set_corrupt(sc, *pcur, 0);
|
|
return;
|
|
}
|
|
|
|
if (fbno != agbno || flen != len)
|
|
xchk_btree_xref_set_corrupt(sc, *pcur, 0);
|
|
}
|
|
|
|
/* Cross-reference with the other btrees. */
|
|
STATIC void
|
|
xchk_allocbt_xref(
|
|
struct xfs_scrub *sc,
|
|
xfs_agblock_t agbno,
|
|
xfs_extlen_t len)
|
|
{
|
|
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
|
|
return;
|
|
|
|
xchk_allocbt_xref_other(sc, agbno, len);
|
|
xchk_xref_is_not_inode_chunk(sc, agbno, len);
|
|
xchk_xref_has_no_owner(sc, agbno, len);
|
|
xchk_xref_is_not_shared(sc, agbno, len);
|
|
}
|
|
|
|
/* Scrub a bnobt/cntbt record. */
|
|
STATIC int
|
|
xchk_allocbt_rec(
|
|
struct xchk_btree *bs,
|
|
union xfs_btree_rec *rec)
|
|
{
|
|
struct xfs_mount *mp = bs->cur->bc_mp;
|
|
xfs_agnumber_t agno = bs->cur->bc_private.a.agno;
|
|
xfs_agblock_t bno;
|
|
xfs_extlen_t len;
|
|
int error = 0;
|
|
|
|
bno = be32_to_cpu(rec->alloc.ar_startblock);
|
|
len = be32_to_cpu(rec->alloc.ar_blockcount);
|
|
|
|
if (bno + len <= bno ||
|
|
!xfs_verify_agbno(mp, agno, bno) ||
|
|
!xfs_verify_agbno(mp, agno, bno + len - 1))
|
|
xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
|
|
|
|
xchk_allocbt_xref(bs->sc, bno, len);
|
|
|
|
return error;
|
|
}
|
|
|
|
/* Scrub the freespace btrees for some AG. */
|
|
STATIC int
|
|
xchk_allocbt(
|
|
struct xfs_scrub *sc,
|
|
xfs_btnum_t which)
|
|
{
|
|
struct xfs_btree_cur *cur;
|
|
|
|
cur = which == XFS_BTNUM_BNO ? sc->sa.bno_cur : sc->sa.cnt_cur;
|
|
return xchk_btree(sc, cur, xchk_allocbt_rec, &XFS_RMAP_OINFO_AG, NULL);
|
|
}
|
|
|
|
int
|
|
xchk_bnobt(
|
|
struct xfs_scrub *sc)
|
|
{
|
|
return xchk_allocbt(sc, XFS_BTNUM_BNO);
|
|
}
|
|
|
|
int
|
|
xchk_cntbt(
|
|
struct xfs_scrub *sc)
|
|
{
|
|
return xchk_allocbt(sc, XFS_BTNUM_CNT);
|
|
}
|
|
|
|
/* xref check that the extent is not free */
|
|
void
|
|
xchk_xref_is_used_space(
|
|
struct xfs_scrub *sc,
|
|
xfs_agblock_t agbno,
|
|
xfs_extlen_t len)
|
|
{
|
|
bool is_freesp;
|
|
int error;
|
|
|
|
if (!sc->sa.bno_cur || xchk_skip_xref(sc->sm))
|
|
return;
|
|
|
|
error = xfs_alloc_has_record(sc->sa.bno_cur, agbno, len, &is_freesp);
|
|
if (!xchk_should_check_xref(sc, &error, &sc->sa.bno_cur))
|
|
return;
|
|
if (is_freesp)
|
|
xchk_btree_xref_set_corrupt(sc, sc->sa.bno_cur, 0);
|
|
}
|