haiku/headers/os/storage/File.h

/*
 * Copyright 2002-2006, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _FILE_H
#define _FILE_H


#include <DataIO.h>
#include <Node.h>
#include <StorageDefs.h>


class BEntry;


class BFile : public BNode, public BPositionIO {
	public:
		BFile();
		BFile(const BFile &file);
		BFile(const entry_ref *ref, uint32 openMode);
		BFile(const BEntry *entry, uint32 openMode);
		BFile(const char *path, uint32 openMode);
		BFile(const BDirectory *dir, const char *path, uint32 openMode);
		virtual ~BFile();

		status_t SetTo(const entry_ref *ref, uint32 openMode);
		status_t SetTo(const BEntry *entry, uint32 openMode);
		status_t SetTo(const char *path, uint32 openMode);
		status_t SetTo(const BDirectory *dir, const char *path, uint32 openMode);

		bool IsReadable() const;
		bool IsWritable() const;

		virtual ssize_t Read(void *buffer, size_t size);
		virtual ssize_t ReadAt(off_t location, void *buffer, size_t size);
		virtual ssize_t Write(const void *buffer, size_t size);
		virtual ssize_t WriteAt(off_t location, const void *buffer, size_t size);

		virtual off_t Seek(off_t offset, uint32 seekMode);
		virtual off_t Position() const;

		virtual status_t SetSize(off_t size);
		virtual	status_t GetSize(off_t* size) const;

		BFile &operator=(const BFile &file);

	private:
		virtual void _PhiloFile1();
		virtual void _PhiloFile2();
		virtual void _PhiloFile3();
		virtual void _PhiloFile4();
		virtual void _PhiloFile5();
		virtual void _PhiloFile6();

		uint32 _reservedData[8];

	private:
		int get_fd() const;
		virtual void close_fd();

	private:
		//! The file's open mode.
		uint32 fMode;
};

#endif	// _FILE_H