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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 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_rmap.h"
#include "xfs_rmap_btree.h"
#include "xfs_rtrmap_btree.h"
#include "xfs_inode.h"
#include "xfs_rtalloc.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 with the realtime metadata and AG headers locked. */
int
xchk_setup_rtrmapbt(
struct xfs_scrub *sc,
struct xfs_inode *ip)
{
struct xfs_mount *mp = sc->mp;
int lockmode;
int error = 0;
if (sc->sm->sm_agno || sc->sm->sm_ino || sc->sm->sm_gen)
return -EINVAL;
error = xchk_setup_fs(sc, ip);
if (error)
return error;
lockmode = XFS_ILOCK_EXCL;
xfs_ilock(mp->m_rrmapip, lockmode);
xfs_trans_ijoin(sc->tp, mp->m_rrmapip, lockmode);
lockmode = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP;
xfs_ilock(mp->m_rbmip, lockmode);
xfs_trans_ijoin(sc->tp, mp->m_rbmip, lockmode);
return 0;
}
/* Realtime reverse mapping. */
/* Scrub a realtime rmapbt record. */
STATIC int
xchk_rtrmapbt_helper(
struct xchk_btree *bs,
union xfs_btree_rec *rec)
{
struct xfs_mount *mp = bs->cur->bc_mp;
struct xfs_rmap_irec irec;
bool non_inode;
bool is_bmbt;
bool is_attr;
int error;
error = xfs_rmap_btrec_to_irec(bs->cur, rec, &irec);
if (!xchk_btree_process_error(bs->sc, bs->cur, 0, &error))
goto out;
if (irec.rm_startblock + irec.rm_blockcount <= irec.rm_startblock ||
(!xfs_verify_rtbno(mp, irec.rm_startblock) ||
!xfs_verify_rtbno(mp, irec.rm_startblock +
irec.rm_blockcount - 1)))
xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
non_inode = XFS_RMAP_NON_INODE_OWNER(irec.rm_owner);
is_bmbt = irec.rm_flags & XFS_RMAP_BMBT_BLOCK;
is_attr = irec.rm_flags & XFS_RMAP_ATTR_FORK;
if (is_bmbt || non_inode || is_attr)
xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
out:
return error;
}
/* Scrub the realtime rmap btree. */
int
xchk_rtrmapbt(
struct xfs_scrub *sc)
{
struct xfs_owner_info oinfo;
struct xfs_mount *mp = sc->mp;
struct xfs_btree_cur *cur;
int error;
cur = xfs_rtrmapbt_init_cursor(mp, sc->tp, mp->m_rrmapip);
xfs_rmap_ino_bmbt_owner(&oinfo, mp->m_rrmapip->i_ino, XFS_DATA_FORK);
error = xchk_btree(sc, cur, xchk_rtrmapbt_helper, &oinfo, NULL);
xfs_btree_del_cursor(cur, error);
return error;
}
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