fca8994584
This patch extends the file-system interface with the ability to monitor changes of files or directories. The new 'File_system::sigh' function can be used to install a signal handler for an open node. The 'ram_fs' server has been enhanced to support the new interface. So any file or directory changes can now be observed by 'ram_fs' clients. Fixes #607
111 lines
2.4 KiB
C++
111 lines
2.4 KiB
C++
/*
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* \brief Client-side file-system session interface
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* \author Norman Feske
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* \date 2012-04-05
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*/
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/*
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* Copyright (C) 2012-2013 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__FILE_SYSTEM_SESSION__CLIENT_H_
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#define _INCLUDE__FILE_SYSTEM_SESSION__CLIENT_H_
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#include <base/rpc_client.h>
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#include <file_system_session/capability.h>
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#include <packet_stream_tx/client.h>
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namespace File_system {
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class Session_client : public Rpc_client<Session>
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{
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private:
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Packet_stream_tx::Client<Tx> _tx;
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public:
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/**
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* Constructor
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*
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* \param session session capability
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* \param tx_buffer_alloc allocator used for managing the
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* transmission buffer
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*/
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Session_client(Session_capability session,
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Range_allocator &tx_buffer_alloc)
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:
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Rpc_client<Session>(session),
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_tx(call<Rpc_tx_cap>(), &tx_buffer_alloc)
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{ }
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/***********************************
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** File-system session interface **
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***********************************/
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Tx::Source *tx() { return _tx.source(); }
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File_handle file(Dir_handle dir, Name const &name, Mode mode, bool create)
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{
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return call<Rpc_file>(dir, name, mode, create);
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}
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Symlink_handle symlink(Dir_handle dir, Name const &name, bool create)
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{
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return call<Rpc_symlink>(dir, name, create);
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}
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Dir_handle dir(Path const &path, bool create)
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{
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return call<Rpc_dir>(path, create);
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}
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Node_handle node(Path const &path)
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{
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return call<Rpc_node>(path);
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}
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void close(Node_handle node)
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{
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call<Rpc_close>(node);
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}
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Status status(Node_handle node)
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{
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return call<Rpc_status>(node);
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}
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void control(Node_handle node, Control control)
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{
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call<Rpc_control>(node, control);
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}
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void unlink(Dir_handle dir, Name const &name)
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{
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call<Rpc_unlink>(dir, name);
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}
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void truncate(File_handle file, file_size_t size)
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{
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call<Rpc_truncate>(file, size);
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}
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void move(Dir_handle from_dir, Name const &from_name,
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Dir_handle to_dir, Name const &to_name)
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{
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call<Rpc_move>(from_dir, from_name, to_dir, to_name);
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}
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void sigh(Node_handle node, Signal_context_capability sigh)
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{
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call<Rpc_sigh>(node, sigh);
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}
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};
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}
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#endif /* _INCLUDE__FILE_SYSTEM_SESSION__CLIENT_H_ */
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