qmp/hmp: add query-vm-generation-id and 'info vm-generation-id' commands

Add commands to query Virtual Machine Generation ID counter.

QMP command example:
    { "execute": "query-vm-generation-id" }

HMP command example:
    info vm-generation-id

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Ben Warren <ben@skyportsystems.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/hmp.c b/hmp.c
index 83e287e0a4..aadbcf507f 100644
--- a/hmp.c
+++ b/hmp.c
@@ -2576,3 +2576,12 @@ void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict)
 
     qapi_free_HotpluggableCPUList(saved);
 }
+
+void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict)
+{
+    GuidInfo *info = qmp_query_vm_generation_id(NULL);
+    if (info) {
+        monitor_printf(mon, "%s\n", info->guid);
+    }
+    qapi_free_GuidInfo(info);
+}