xfs: modify verifiers to differentiate CRC from other errors
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>
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index 9c7cf3d..c1cf6a3 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -474,7 +474,6 @@
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 @@
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 @@
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 @@
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 @@
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;
}