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c0d61858c3
The support has two parts. First, a VFS plugin now gets passed an I/O-response handler callback on construction, which informs users of the VFS that an I/O event occurred. This enables, for example, the libC to check if blocking read can be completed. Further, the VFS file I/O interface provides now functions for suspendable reads, i.e., queue_read() and complete_read().
60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
/*
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* \brief Interface for creating file-system instances
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* \author Norman Feske
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* \date 2014-04-07
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*/
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/*
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* Copyright (C) 2014-2016 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__VFS__FILE_SYSTEM_FACTORY_H_
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#define _INCLUDE__VFS__FILE_SYSTEM_FACTORY_H_
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#include <vfs/file_system.h>
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namespace Vfs {
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struct File_system_factory;
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struct Global_file_system_factory;
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/**
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* Return singleton instance of a file-system factory
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*/
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Global_file_system_factory &global_file_system_factory();
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}
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struct Vfs::File_system_factory
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{
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/**
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* Create and return a new file-system
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*
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* \param env Env for service connections
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* \param alloc internal file-system allocator
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* \param config file-system configuration
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*/
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virtual File_system *create(Genode::Env &env,
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Genode::Allocator &alloc,
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Xml_node config,
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Io_response_handler &io_handler) = 0;
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};
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struct Vfs::Global_file_system_factory : File_system_factory
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{
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/**
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* Register an additional factory for new file-system type
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*
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* \name name of file-system type
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* \factory factory to create instances of this file-system type
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*/
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virtual void extend(char const *name, File_system_factory &factory) = 0;
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};
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#endif /* _INCLUDE__VFS__FILE_SYSTEM_FACTORY_H_ */
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