Support reading parameters automatically from the superblock in vitastor-disk {dump,write}-{meta,journal}

src/util/json_util.h

@@ -0,0 +1,11 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.1 or GNU GPL-2.0+ (see README.md for details)
+
+#pragma once
+
+#include <map>
+#include <string>
+
+#include "json11/json11.hpp"
+
+std::map<std::string, std::string> json_to_string_map(const json11::Json::object & config);