[v6,06/42] qcow2: Implement .bdrv_storage_child()

Commit Message

Max Reitz Aug. 9, 2019, 4:13 p.m. UTC

Signed-off-by: Max Reitz <[e-mail]>
Reviewed-by: Vladimir Sementsov-Ogievskiy <[e-mail]>
---
 block/qcow2.c | 9 +++++++++
 1 file changed, 9 insertions(+)

Comments

Eric Blake Aug. 9, 2019, 5:07 p.m. UTC | #1

On 8/9/19 11:13 AM, Max Reitz wrote:
> Signed-off-by: Max Reitz <[e-mail]>
> Reviewed-by: Vladimir Sementsov-Ogievskiy <[e-mail]>
> ---
>  block/qcow2.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 

Reviewed-by: Eric Blake <[e-mail]>

Patch

diff --git a/block/qcow2.c b/block/qcow2.c
index 039bdc2f7e..f8570d6210 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -5086,6 +5086,13 @@  void qcow2_signal_corruption(BlockDriverState *bs, bool fatal, int64_t offset,
     s->signaled_corruption = true;
 }
 
+static BdrvChild *qcow2_storage_child(BlockDriverState *bs)
+{
+    BDRVQcow2State *s = bs->opaque;
+
+    return s->data_file;
+}
+
 static QemuOptsList qcow2_create_opts = {
     .name = "qcow2-create-opts",
     .head = QTAILQ_HEAD_INITIALIZER(qcow2_create_opts.head),
@@ -5232,6 +5239,8 @@  BlockDriver bdrv_qcow2 = {
     .bdrv_reopen_bitmaps_rw = qcow2_reopen_bitmaps_rw,
     .bdrv_can_store_new_dirty_bitmap = qcow2_can_store_new_dirty_bitmap,
     .bdrv_remove_persistent_dirty_bitmap = qcow2_remove_persistent_dirty_bitmap,
+
+    .bdrv_storage_child = qcow2_storage_child,
 };
 
 static void bdrv_qcow2_init(void)