// Copyright 2023 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <Poco/Path.h>


/** Creates a local (at the same mount point) backup (snapshot) directory.
  *
  * In the specified destination directory, it creates a hard links on all source-directory files
  *  and in all nested directories, with saving (creating) all relative paths;
  *  and also `chown`, removing the write permission.
  *
  * This protects data from accidental deletion or modification,
  *  and is intended to be used as a simple means of protection against a human or program error,
  *  but not from a hardware failure.
  */
void localBackup(const Poco::Path & source_path, const Poco::Path & destination_path);