92 lines
1.4 KiB
C++
92 lines
1.4 KiB
C++
#ifndef __VOLUME_H__
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#define __VOLUME_H__
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#include <vector>
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#include <stdint.h>
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namespace ProFUSE {
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class Bitmap;
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class BlockDevice;
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class Volume;
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class Directory;
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class FileEntry;
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class Entry {
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public:
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Entry() : _address(0), _volume(NULL) { }
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virtual ~Entry();
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unsigned address() { return _address; }
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void setAddress(unsigned address) { _address = address; }
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Volume *volume() const { return _volume; }
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void setVolume(Volume *v) { _volume = v; }
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private:
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// physical location on disk (block * 512 + offset)
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unsigned _address;
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Volume *_volume;
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};
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class Directory {
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FileEntry *childAtIndex(unsigned index);
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private:
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unsigned _childCount;
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std::vector<FileEntry *>_children;
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};
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class FileEntry {
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virtual ~FileEntry();
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virtual unsigned inode();
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Directory *directory();
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Directory *parent();
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private:
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Directory *_parent;
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Volume *_volume;
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}
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class Volume {
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public:
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~Volume();
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Volume *Create(BlockDevice *);
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Volume *Open(BlockDevice *);
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int allocBlock();
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private:
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Volume(BlockDevice *, int);
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Bitmap *_bitmap;
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BlockDevice *_device;
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};
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class FileEntry : public Entry {
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public:
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virtual ~FileEntry();
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unsigned inode();
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private:
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_unsigned _inode;
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_unsigned _lookupCount;
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_unsigned _openCount;
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};
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}
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#endif |