genode/repos/os/include/ram_fs/node.h
2016-01-08 14:48:52 +01:00

68 lines
1.3 KiB
C++

/*
* \brief File-system node
* \author Norman Feske
* \date 2012-04-11
*/
/*
* Copyright (C) 2012-2015 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _INCLUDE__RAM_FS__NODE_H_
#define _INCLUDE__RAM_FS__NODE_H_
/* Genode includes */
#include <file_system/listener.h>
#include <file_system/node.h>
#include <util/list.h>
namespace File_system {
using namespace Genode;
class Node;
}
class File_system::Node : public Node_base, public List<Node>::Element
{
public:
typedef char Name[128];
private:
int _ref_count;
Name _name;
unsigned long const _inode;
/**
* Generate unique inode number
*/
static unsigned long _unique_inode()
{
static unsigned long inode_count;
return ++inode_count;
}
public:
Node()
: _ref_count(0), _inode(_unique_inode())
{ _name[0] = 0; }
unsigned long inode() const { return _inode; }
char const *name() const { return _name; }
/**
* Assign name
*/
void name(char const *name) { strncpy(_name, name, sizeof(_name)); }
virtual size_t read(char *dst, size_t len, seek_off_t) = 0;
virtual size_t write(char const *src, size_t len, seek_off_t) = 0;
};
#endif /* _INCLUDE__RAM_FS__NODE_H_ */