UFSStrategy.h

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/*
 * Copyright (C) 1996-2023 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#ifndef SQUID_FS_UFS_UFSSTRATEGY_H
#define SQUID_FS_UFS_UFSSTRATEGY_H
 
#include "DiskIO/DiskFile.h"
#include "StoreIOState.h"
 
class Swapdir;
class StoreEntry;
class DiskIOStrategy;
 
namespace Fs
{
namespace Ufs
{
class UFSStrategy
{
public:
    UFSStrategy (DiskIOStrategy *);
    virtual ~UFSStrategy ();
    virtual bool shedLoad();
 
    virtual int load();
 
    StoreIOState::Pointer createState(SwapDir *SD, StoreEntry *e, StoreIOState::STIOCB * callback, void *callback_data) const;
    /* UFS specific */
    virtual RefCount<DiskFile> newFile (char const *path);
    StoreIOState::Pointer open(SwapDir *, StoreEntry *, StoreIOState::STIOCB *, void *);
    StoreIOState::Pointer create(SwapDir *, StoreEntry *, StoreIOState::STIOCB *, void *);
 
    virtual void unlinkFile (char const *);
    virtual void sync();
 
    virtual int callback();
 
    virtual void init();
 
    virtual void statfs(StoreEntry & sentry)const;
 
    DiskIOStrategy *io;
 
protected:
 
    friend class UFSSwapDir;
 
private:
    UFSStrategy(); //disabled
    UFSStrategy(UFSStrategy const &); //disabled
    UFSStrategy &operator=(UFSStrategy const &); //disabled
 
};
 
} //namespace Ufs
} //namespace Fs
 
#endif /* SQUID_FS_UFS_UFSSTRATEGY_H */