qmp: Introduce blockdev-change-medium

Introduce a new QMP command 'blockdev-change-medium' which is intended
to replace the 'change' command for block devices. The existing function
qmp_change_blockdev() is accordingly renamed to
qmp_blockdev_change_medium().

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/blockdev.c b/blockdev.c
index 53d4edf..b3a958c 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2143,8 +2143,9 @@ void qmp_blockdev_insert_medium(const char *device, const char *node_name,
     qmp_blockdev_insert_anon_medium(device, bs, errp);
 }
 
-void qmp_change_blockdev(const char *device, const char *filename,
-                         const char *format, Error **errp)
+void qmp_blockdev_change_medium(const char *device, const char *filename,
+                                bool has_format, const char *format,
+                                Error **errp)
 {
     BlockBackend *blk;
     BlockDriverState *medium_bs = NULL;
@@ -2165,7 +2166,7 @@ void qmp_change_blockdev(const char *device, const char *filename,
 
     bdrv_flags = blk_get_open_flags_from_root_state(blk);
 
-    if (format) {
+    if (has_format) {
         options = qdict_new();
         qdict_put(options, "driver", qstring_from_str(format));
     }