xfs: cross-reference the block mappings when possible
Use an inode's block mappings to cross-reference inode block counters. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
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@ -37,6 +37,8 @@
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#include "xfs_da_format.h"
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#include "xfs_reflink.h"
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#include "xfs_rmap.h"
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#include "xfs_bmap.h"
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#include "xfs_bmap_util.h"
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#include "scrub/xfs_scrub.h"
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#include "scrub/scrub.h"
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#include "scrub/common.h"
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@ -626,6 +628,37 @@ xfs_scrub_inode_xref_finobt(
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xfs_scrub_btree_xref_set_corrupt(sc, sc->sa.fino_cur, 0);
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}
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/* Cross reference the inode fields with the forks. */
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STATIC void
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xfs_scrub_inode_xref_bmap(
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struct xfs_scrub_context *sc,
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struct xfs_dinode *dip)
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{
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xfs_extnum_t nextents;
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xfs_filblks_t count;
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xfs_filblks_t acount;
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int error;
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/* Walk all the extents to check nextents/naextents/nblocks. */
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error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_DATA_FORK,
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&nextents, &count);
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if (!xfs_scrub_should_check_xref(sc, &error, NULL))
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return;
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if (nextents < be32_to_cpu(dip->di_nextents))
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xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);
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error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_ATTR_FORK,
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&nextents, &acount);
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if (!xfs_scrub_should_check_xref(sc, &error, NULL))
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return;
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if (nextents != be16_to_cpu(dip->di_anextents))
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xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);
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/* Check nblocks against the inode. */
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if (count + acount != be64_to_cpu(dip->di_nblocks))
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xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);
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}
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/* Cross-reference with the other btrees. */
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STATIC void
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xfs_scrub_inode_xref(
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@ -653,6 +686,7 @@ xfs_scrub_inode_xref(
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xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_INODES);
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xfs_scrub_xref_is_owned_by(sc, agbno, 1, &oinfo);
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xfs_scrub_xref_is_not_shared(sc, agbno, 1);
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xfs_scrub_inode_xref_bmap(sc, dip);
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xfs_scrub_ag_free(sc, &sc->sa);
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}
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