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xfs: modify verifiers to differentiate CRC from other errors

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Modify all read & write verifiers to differentiate
between CRC errors and other inconsistencies.

This sets the appropriate error number on bp->b_error,
and then calls xfs_verifier_error() if something went
wrong.  That function will issue the appropriate message
to the user.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Eric Sandeen
2014-02-27 15:23:10 +11:00
committed by Dave Chinner
parent db9355c296
commit ce5028cfe3
16 changed files with 125 additions and 117 deletions
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37
fs/xfs/xfs_alloc.c
View File

@@ -474,7 +474,6 @@ xfs_agfl_read_verify(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
int agfl_ok = 1;
/*
* There is no verification of non-crc AGFLs because mkfs does not
@@ -485,14 +484,13 @@ xfs_agfl_read_verify(
if (!xfs_sb_version_hascrc(&mp->m_sb))
return;
agfl_ok = xfs_buf_verify_cksum(bp, XFS_AGFL_CRC_OFF);
agfl_ok = agfl_ok && xfs_agfl_verify(bp);
if (!agfl_ok) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr);
if (!xfs_buf_verify_cksum(bp, XFS_AGFL_CRC_OFF))
xfs_buf_ioerror(bp, EFSBADCRC);
else if (!xfs_agfl_verify(bp))
xfs_buf_ioerror(bp, EFSCORRUPTED);
}
if (bp->b_error)
xfs_verifier_error(bp);
}
static void
@@ -507,8 +505,8 @@ xfs_agfl_write_verify(
return;
if (!xfs_agfl_verify(bp)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr);
xfs_buf_ioerror(bp, EFSCORRUPTED);
xfs_verifier_error(bp);
return;
}
@@ -2236,18 +2234,17 @@ xfs_agf_read_verify(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
int agf_ok = 1;
if (xfs_sb_version_hascrc(&mp->m_sb))
agf_ok = xfs_buf_verify_cksum(bp, XFS_AGF_CRC_OFF);
agf_ok = agf_ok && xfs_agf_verify(mp, bp);
if (unlikely(XFS_TEST_ERROR(!agf_ok, mp, XFS_ERRTAG_ALLOC_READ_AGF,
XFS_RANDOM_ALLOC_READ_AGF))) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr);
if (xfs_sb_version_hascrc(&mp->m_sb) &&
!xfs_buf_verify_cksum(bp, XFS_AGF_CRC_OFF))
xfs_buf_ioerror(bp, EFSBADCRC);
else if (XFS_TEST_ERROR(!xfs_agf_verify(mp, bp), mp,
XFS_ERRTAG_ALLOC_READ_AGF,
XFS_RANDOM_ALLOC_READ_AGF))
xfs_buf_ioerror(bp, EFSCORRUPTED);
}
if (bp->b_error)
xfs_verifier_error(bp);
}
static void
@@ -2258,8 +2255,8 @@ xfs_agf_write_verify(
struct xfs_buf_log_item *bip = bp->b_fspriv;
if (!xfs_agf_verify(mp, bp)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr);
xfs_buf_ioerror(bp, EFSCORRUPTED);
xfs_verifier_error(bp);
return;
}