[Qemu-devel] [PATCH v3 04/12] qcow2/overlaps: Protect image header

[Max Reitz <mreitz@redhat.com>]

Enter the image header into the metadata list to protect it against
accidental modifications.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 block/qcow2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/block/qcow2.c b/block/qcow2.c
index 81016d8..b61dab5 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -752,6 +752,8 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
         }
     }
 
+    qcow2_metadata_list_enter(bs, 0, 1, QCOW2_OL_MAIN_HEADER);
+
     s->l2_bits = s->cluster_bits - 3; /* L2 is always one cluster */
     s->l2_size = 1 << s->l2_bits;
     /* 2^(s->refcount_order - 3) is the refcount width in bytes */
-- 
2.1.0