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Commit 166d7641 authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: introduce scrubber cross-referencing stubs 



Create some stubs that will be used to cross-reference metadata records.
The actual cross-referencing will be filled in by subsequent patches.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarDave Chinner <dchinner@redhat.com>
parent 858333dc

fs/xfs/scrub/agheader.c

+62 −1
Original line number Diff line number Diff line
@@ -37,7 +37,10 @@ 
#include "scrub/common.h"

#include "scrub/trace.h"



/* Walk all the blocks in the AGFL. */

/*

 * Walk all the blocks in the AGFL.  The fn function can return any negative

 * error code or XFS_BTREE_QUERY_RANGE_ABORT.

 */

int

xfs_scrub_walk_agfl(

	struct xfs_scrub_context	*sc,
@@ -98,6 +101,16 @@ xfs_scrub_walk_agfl( 


/* Superblock */



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_superblock_xref(

	struct xfs_scrub_context	*sc,

	struct xfs_buf			*bp)

{

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/*

 * Scrub the filesystem superblock.

 *
@@ -386,11 +399,22 @@ xfs_scrub_superblock( 
			BBTOB(bp->b_length) - sizeof(struct xfs_dsb)))

		xfs_scrub_block_set_corrupt(sc, bp);



	xfs_scrub_superblock_xref(sc, bp);



	return error;

}



/* AGF */



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_agf_xref(

	struct xfs_scrub_context	*sc)

{

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Scrub the AGF. */

int

xfs_scrub_agf(
@@ -469,6 +493,7 @@ xfs_scrub_agf( 
	if (agfl_count != 0 && fl_count != agfl_count)

		xfs_scrub_block_set_corrupt(sc, sc->sa.agf_bp);



	xfs_scrub_agf_xref(sc);

out:

	return error;

}
@@ -481,6 +506,16 @@ struct xfs_scrub_agfl_info { 
	xfs_agblock_t			*entries;

};



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_agfl_block_xref(

	struct xfs_scrub_context	*sc,

	xfs_agblock_t			agbno)

{

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Scrub an AGFL block. */

STATIC int

xfs_scrub_agfl_block(
@@ -498,6 +533,8 @@ xfs_scrub_agfl_block( 
	else

		xfs_scrub_block_set_corrupt(sc, sc->sa.agfl_bp);



	xfs_scrub_agfl_block_xref(sc, agbno);



	return 0;

}
@@ -512,6 +549,15 @@ xfs_scrub_agblock_cmp( 
	return (int)*a - (int)*b;

}



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_agfl_xref(

	struct xfs_scrub_context	*sc)

{

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Scrub the AGFL. */

int

xfs_scrub_agfl(
@@ -532,6 +578,11 @@ xfs_scrub_agfl( 
	if (!sc->sa.agf_bp)

		return -EFSCORRUPTED;



	xfs_scrub_agfl_xref(sc);



	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		goto out;



	/* Allocate buffer to ensure uniqueness of AGFL entries. */

	agf = XFS_BUF_TO_AGF(sc->sa.agf_bp);

	agflcount = be32_to_cpu(agf->agf_flcount);
@@ -574,6 +625,15 @@ xfs_scrub_agfl( 


/* AGI */



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_agi_xref(

	struct xfs_scrub_context	*sc)

{

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Scrub the AGI. */

int

xfs_scrub_agi(
@@ -652,6 +712,7 @@ xfs_scrub_agi( 
	if (agi->agi_pad32 != cpu_to_be32(0))

		xfs_scrub_block_set_corrupt(sc, sc->sa.agi_bp);



	xfs_scrub_agi_xref(sc);

out:

	return error;

}

fs/xfs/scrub/alloc.c

+13 −0
Original line number Diff line number Diff line
@@ -50,6 +50,17 @@ xfs_scrub_setup_ag_allocbt( 


/* Free space btree scrubber. */



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_allocbt_xref(

	struct xfs_scrub_context	*sc,

	xfs_agblock_t			agbno,

	xfs_extlen_t			len)

{

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Scrub a bnobt/cntbt record. */

STATIC int

xfs_scrub_allocbt_rec(
@@ -70,6 +81,8 @@ xfs_scrub_allocbt_rec( 
	    !xfs_verify_agbno(mp, agno, bno + len - 1))

		xfs_scrub_btree_set_corrupt(bs->sc, bs->cur, 0);



	xfs_scrub_allocbt_xref(bs->sc, bno, len);



	return error;

}

fs/xfs/scrub/bmap.c

+29 −0
Original line number Diff line number Diff line
@@ -99,6 +99,30 @@ struct xfs_scrub_bmap_info { 
	int				whichfork;

};



/* Cross-reference a single rtdev extent record. */

STATIC void

xfs_scrub_bmap_rt_extent_xref(

	struct xfs_scrub_bmap_info	*info,

	struct xfs_inode		*ip,

	struct xfs_btree_cur		*cur,

	struct xfs_bmbt_irec		*irec)

{

	if (info->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Cross-reference a single datadev extent record. */

STATIC void

xfs_scrub_bmap_extent_xref(

	struct xfs_scrub_bmap_info	*info,

	struct xfs_inode		*ip,

	struct xfs_btree_cur		*cur,

	struct xfs_bmbt_irec		*irec)

{

	if (info->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Scrub a single extent record. */

STATIC int

xfs_scrub_bmap_extent(
@@ -158,6 +182,11 @@ xfs_scrub_bmap_extent( 
		xfs_scrub_fblock_set_corrupt(info->sc, info->whichfork,

				irec->br_startoff);



	if (info->is_rt)

		xfs_scrub_bmap_rt_extent_xref(info, ip, cur, irec);

	else

		xfs_scrub_bmap_extent_xref(info, ip, cur, irec);



	info->lastoff = irec->br_startoff + irec->br_blockcount;

	return error;

}

fs/xfs/scrub/ialloc.c

+15 −0
Original line number Diff line number Diff line
@@ -58,6 +58,19 @@ xfs_scrub_setup_ag_iallocbt( 


/* Inode btree scrubber. */



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_iallocbt_chunk_xref(

	struct xfs_scrub_context	*sc,

	struct xfs_inobt_rec_incore	*irec,

	xfs_agino_t			agino,

	xfs_agblock_t			agbno,

	xfs_extlen_t			len)

{

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Is this chunk worth checking? */

STATIC bool

xfs_scrub_iallocbt_chunk(
@@ -76,6 +89,8 @@ xfs_scrub_iallocbt_chunk( 
	    !xfs_verify_agbno(mp, agno, bno + len - 1))

		xfs_scrub_btree_set_corrupt(bs->sc, bs->cur, 0);



	xfs_scrub_iallocbt_chunk_xref(bs->sc, irec, agino, bno, len);



	return true;

}

fs/xfs/scrub/inode.c

+12 −0
Original line number Diff line number Diff line
@@ -577,6 +577,17 @@ xfs_scrub_inode_map_raw( 
	return error;

}



/* Cross-reference with the other btrees. */

STATIC void

xfs_scrub_inode_xref(

	struct xfs_scrub_context	*sc,

	xfs_ino_t			ino,

	struct xfs_dinode		*dip)

{

	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)

		return;

}



/* Scrub an inode. */

int

xfs_scrub_inode(
@@ -626,6 +637,7 @@ xfs_scrub_inode( 
			xfs_scrub_ino_set_preen(sc, ino, bp);

	}



	xfs_scrub_inode_xref(sc, ino, dip);

out:

	if (bp)

		xfs_trans_brelse(sc->tp, bp);