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xfs: introduce scrubber cross-referencing stubs

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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: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2018-01-16 18:53:05 -08:00
parent 858333dcf0
commit 166d76410d
7 changed files with 157 additions and 1 deletions
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63
fs/xfs/scrub/agheader.c
View File

@ -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 @@ out:
/* 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;
}

13
fs/xfs/scrub/alloc.c
View File

@ -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;
}

29
fs/xfs/scrub/bmap.c
View File

@ -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;
}

15
fs/xfs/scrub/ialloc.c
View File

@ -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;
}

12
fs/xfs/scrub/inode.c
View File

@ -577,6 +577,17 @@ out_buf:
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);

14
fs/xfs/scrub/refcount.c
View File

@ -50,6 +50,18 @@ xfs_scrub_setup_ag_refcountbt(
/* Reference count btree scrubber. */
/* Cross-reference with the other btrees. */
STATIC void
xfs_scrub_refcountbt_xref(
struct xfs_scrub_context *sc,
xfs_agblock_t agbno,
xfs_extlen_t len,
xfs_nlink_t refcount)
{
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
return;
}
/* Scrub a refcountbt record. */
STATIC int
xfs_scrub_refcountbt_rec(
@ -83,6 +95,8 @@ xfs_scrub_refcountbt_rec(
if (refcount == 0)
xfs_scrub_btree_set_corrupt(bs->sc, bs->cur, 0);
xfs_scrub_refcountbt_xref(bs->sc, bno, len, refcount);
return error;
}

12
fs/xfs/scrub/rmap.c
View File

@ -51,6 +51,16 @@ xfs_scrub_setup_ag_rmapbt(
/* Reverse-mapping scrubber. */
/* Cross-reference with the other btrees. */
STATIC void
xfs_scrub_rmapbt_xref(
struct xfs_scrub_context *sc,
struct xfs_rmap_irec *irec)
{
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
return;
}
/* Scrub an rmapbt record. */
STATIC int
xfs_scrub_rmapbt_rec(
@ -121,6 +131,8 @@ xfs_scrub_rmapbt_rec(
irec.rm_owner > XFS_RMAP_OWN_FS)
xfs_scrub_btree_set_corrupt(bs->sc, bs->cur, 0);
}
xfs_scrub_rmapbt_xref(bs->sc, &irec);
out:
return error;
}