mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-26 08:51:08 +00:00
82a683eccc
Reduce the size and forward compatibility of VFS file-system constructors by passing an object holding accessors for 'Genode::Env', 'Genode::Allocator', response handlers, and the root file-system. Fix #2742
122 lines
2.6 KiB
C++
122 lines
2.6 KiB
C++
/*
|
|
* \brief Interface for creating file-system instances
|
|
* \author Norman Feske
|
|
* \date 2014-04-07
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2014-2018 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__VFS__FILE_SYSTEM_FACTORY_H_
|
|
#define _INCLUDE__VFS__FILE_SYSTEM_FACTORY_H_
|
|
|
|
#include <vfs/env.h>
|
|
#include <vfs/file_system.h>
|
|
|
|
namespace Vfs {
|
|
|
|
struct File_system_factory;
|
|
struct Global_file_system_factory;
|
|
}
|
|
|
|
|
|
struct Vfs::File_system_factory : Interface
|
|
{
|
|
/**
|
|
* Create and return a new file-system
|
|
*
|
|
* \param env Env of VFS root
|
|
* \param config file-system configuration
|
|
*/
|
|
virtual File_system *create(Vfs::Env &env, Xml_node config) = 0;
|
|
};
|
|
|
|
|
|
class Vfs::Global_file_system_factory : public Vfs::File_system_factory
|
|
{
|
|
private:
|
|
|
|
Genode::Allocator &_md_alloc;
|
|
|
|
public:
|
|
|
|
typedef Genode::String<128> Fs_type_name;
|
|
typedef Genode::String<128> Node_name;
|
|
typedef Genode::String<128> Library_name;
|
|
|
|
struct Entry_base;
|
|
|
|
private:
|
|
|
|
Genode::List<Entry_base> _list { };
|
|
|
|
/**
|
|
* Add builtin File_system type
|
|
*/
|
|
template <typename FILE_SYSTEM>
|
|
void _add_builtin_fs();
|
|
|
|
Vfs::File_system *_try_create(Vfs::Env &env,
|
|
Genode::Xml_node config);
|
|
|
|
/**
|
|
* Return name of factory provided by the shared library
|
|
*/
|
|
static char const *_factory_symbol()
|
|
{
|
|
return "vfs_file_system_factory";
|
|
}
|
|
|
|
/**
|
|
* Return name of VFS node
|
|
*/
|
|
Node_name _node_name(Genode::Xml_node node);
|
|
|
|
/**
|
|
* Return matching library name for a given vfs node name
|
|
*/
|
|
Library_name _library_name(Node_name const &node_name);
|
|
|
|
class Factory_not_available { };
|
|
|
|
/**
|
|
* \throw Factory_not_available
|
|
*/
|
|
Vfs::File_system_factory &_load_factory(Vfs::Env &env,
|
|
Library_name const &lib_name);
|
|
|
|
/**
|
|
* Try to load external File_system_factory provider
|
|
*/
|
|
bool _probe_external_factory(Vfs::Env &env,
|
|
Genode::Xml_node node);
|
|
|
|
public:
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* \param alloc internal factory allocator
|
|
*/
|
|
Global_file_system_factory(Genode::Allocator &alloc);
|
|
|
|
/**
|
|
* File_system_factory interface
|
|
*/
|
|
File_system *create(Vfs::Env&, Genode::Xml_node) override;
|
|
|
|
/**
|
|
* Register an additional factory for new file-system type
|
|
*
|
|
* \name name of file-system type
|
|
* \factory factory to create instances of this file-system type
|
|
*/
|
|
void extend(char const *name, File_system_factory &factory);
|
|
};
|
|
|
|
#endif /* _INCLUDE__VFS__FILE_SYSTEM_FACTORY_H_ */
|