Iso9660File.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#ifndef ISO9660FILE_H
#define ISO9660FILE_H
 
#include "pedigree/kernel/TargetInfo.h"
#include "pedigree/kernel/processor/types.h"
#include "pedigree/kernel/time/Time.h"
#include "pedigree/kernel/utilities/String.h"
 
#include "Iso9660Filesystem.h"
#include "iso9660.h"
#include "modules/system/vfs/File.h"
 
class Iso9660File : public File {
  friend class Iso9660Directory;
 
 private:
  Iso9660File(const Iso9660File&);
  Iso9660File& operator=(const File&);
  Iso9660File& operator=(const Iso9660File&);
 
 public:
  Iso9660File(String name, Time::Timestamp accessedTime, Time::Timestamp modifiedTime,
              Time::Timestamp creationTime, uintptr_t inode, class Iso9660Filesystem* pFs,
              size_t size, Iso9660DirRecord& record, File* pParent = 0)
      : File(name, accessedTime, modifiedTime, creationTime, inode, pFs, size, pParent),
        m_pFs(pFs),
        m_Dir(record) {
    cacheState().fill.setDirtyTracking(Cache::DirtyTracking::Explicit);
    enableFillCacheWriteback();
  }
  ~Iso9660File() override {
    shutdownFillCacheWriteback();
  }
 
  bool prepareSharedMapping(size_t offset, size_t length) override;
 
  inline Iso9660DirRecord& getDirRecord() {
    return m_Dir;
  }
 
 protected:
  bool readPage(uint64_t location, uintptr_t destination) override;
  bool prepareWrite(uint64_t location, uint64_t size) override;
  uintptr_t readBlock(uint64_t location) override;
  bool pinBlock(uint64_t location) override;
  void unpinBlock(uint64_t location) override;
 
  size_t getBlockSize() const override {
    return TargetInfo::getPageSize() < 2048 ? TargetInfo::getPageSize() : 2048;
  }
 
 private:
  // Filesystem object
  Iso9660Filesystem* m_pFs;
 
  // Our internal directory information (info about *this* directory, not the
  // child)
  Iso9660DirRecord m_Dir;
};
 
#endif