DobbyRootfs.h

/*
* If not stated otherwise in this file or this component's LICENSE file the
* following copyright and licenses apply:
*
* Copyright 2016 Sky UK
*
* 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.
*/
/*
 * File:   DobbyRootfs.h
 *
 */
#ifndef DOBBYROOTFS_H
#define DOBBYROOTFS_H
 
#include "IDobbyUtils.h"
#include "ContainerId.h"
 
#if defined(LEGACY_COMPONENTS)
#include "DobbySpecConfig.h"
#endif // LEGACY_COMPONENTS
 
#include "DobbyBundleConfig.h"
 
#include <sys/types.h>
 
#include <memory>
#include <string>
 
 
class DobbyBundle;
 
// -----------------------------------------------------------------------------
class DobbyRootfs
{
public:
#if defined(LEGACY_COMPONENTS)
    DobbyRootfs(const std::shared_ptr<IDobbyUtils>& utils,
                const std::shared_ptr<const DobbyBundle>& bundle,
                const std::shared_ptr<const DobbySpecConfig>& config);
#endif //defined(LEGACY_COMPONENTS)
    DobbyRootfs(const std::shared_ptr<IDobbyUtils>& utils,
                const std::shared_ptr<const DobbyBundle>& bundle,
                const std::shared_ptr<const DobbyBundleConfig>& config);
    ~DobbyRootfs();
 
public:
    bool isValid() const;
 
    const std::string& path() const;
    int dirFd() const;
 
    void setPersistence(bool persist);
 
    void unmountAllAt(const std::string& pathPrefix);
 
private:
    void cleanUp();
 
#if defined(LEGACY_COMPONENTS)
    bool createMountPoint(int dirfd, const std::string &path, bool isDirectory) const;
 
    bool createStandardMountPoints(int dirfd) const;
 
    bool constructRootfs(int dirfd,
                         const std::shared_ptr<const DobbySpecConfig>& config);
 
    bool createAndWriteFileAt(int dirFd,
                              const std::string& filePath,
                              const std::string& fileContents,
                              mode_t mode = 0644) const;
 
#endif //defined(LEGACY_COMPONENTS)
 
private:
    const std::shared_ptr<IDobbyUtils> mUtilities;
    const std::shared_ptr<const DobbyBundle> mBundle;
    std::string mPath;
    int mDirFd;
    bool mPersist;
};
 
 
#endif // !defined(DOBBYROOTFS_H)