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authorDave Chinner <dchinner@redhat.com>2014-03-07 09:19:14 +0400
committerDave Chinner <david@fromorbit.com>2014-03-07 09:19:14 +0400
commitac75a1f7a4af4dddcc1ac3c0778f0e3f75dc8f32 (patch)
treeac44f40e109615cfda93e22fb79e8953f842393d /fs/xfs/xfs_trans_buf.c
parent38dbfb59d1175ef458d006556061adeaa8751b72 (diff)
downloadlinux-ac75a1f7a4af4dddcc1ac3c0778f0e3f75dc8f32.tar.xz
xfs: don't leak EFSBADCRC to userspace
While the verifier routines may return EFSBADCRC when a buffer has a bad CRC, we need to translate that to EFSCORRUPTED so that the higher layers treat the error appropriately and we return a consistent error to userspace. This fixes a xfs/005 regression. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_trans_buf.c')
-rw-r--r--fs/xfs/xfs_trans_buf.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c
index 647b6f1d8923..b8eef0549f3f 100644
--- a/fs/xfs/xfs_trans_buf.c
+++ b/fs/xfs/xfs_trans_buf.c
@@ -275,6 +275,10 @@ xfs_trans_read_buf_map(
XFS_BUF_UNDONE(bp);
xfs_buf_stale(bp);
xfs_buf_relse(bp);
+
+ /* bad CRC means corrupted metadata */
+ if (error == EFSBADCRC)
+ error = EFSCORRUPTED;
return error;
}
#ifdef DEBUG
@@ -338,6 +342,9 @@ xfs_trans_read_buf_map(
if (tp->t_flags & XFS_TRANS_DIRTY)
xfs_force_shutdown(tp->t_mountp,
SHUTDOWN_META_IO_ERROR);
+ /* bad CRC means corrupted metadata */
+ if (error == EFSBADCRC)
+ error = EFSCORRUPTED;
return error;
}
}
@@ -375,6 +382,10 @@ xfs_trans_read_buf_map(
if (tp->t_flags & XFS_TRANS_DIRTY)
xfs_force_shutdown(tp->t_mountp, SHUTDOWN_META_IO_ERROR);
xfs_buf_relse(bp);
+
+ /* bad CRC means corrupted metadata */
+ if (error == EFSBADCRC)
+ error = EFSCORRUPTED;
return error;
}
#ifdef DEBUG