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This patch extracts the child-management functionality from the init component into a new library called "sandbox". The library API is located at 'os/include/os/sandbox.h'. The sandbox API allows for the interaction of the component with the sandboxed children by providing locally implemented services. This mechanism is illustrated by the new test at os/src/test/sandbox. Issue #3601
120 lines
2.7 KiB
C++
120 lines
2.7 KiB
C++
/*
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* \brief Server role of init, forwarding session requests to children
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* \author Norman Feske
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* \date 2017-03-07
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*/
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/*
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* Copyright (C) 2017 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 Affero General Public License version 3.
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*/
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#ifndef _LIB__SANDBOX__SERVER_H_
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#define _LIB__SANDBOX__SERVER_H_
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/* Genode includes */
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#include <base/attached_rom_dataspace.h>
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#include <os/buffered_xml.h>
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/* local includes */
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#include "types.h"
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#include "service.h"
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#include "state_reporter.h"
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namespace Sandbox { class Server; }
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class Sandbox::Server : Session_state::Ready_callback,
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Session_state::Closed_callback
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{
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private:
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struct Route
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{
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Routed_service &service;
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Session_label label;
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};
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Env &_env;
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Allocator &_alloc;
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/*
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* ID space of requests originating from the parent
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*/
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Id_space<Parent::Server> _server_id_space { };
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/*
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* ID space of requests issued to the children
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*/
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Id_space<Parent::Client> _client_id_space { };
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/**
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* Exception type
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*/
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class Service_not_present : Exception { };
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/**
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* Meta data of service provided to our parent
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*/
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struct Service;
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Registry<Service> _services { };
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/**
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* Services provided by our children
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*/
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Registry<Routed_service> &_child_services;
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Report_update_trigger &_report_update_trigger;
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Constructible<Attached_rom_dataspace> _session_requests { };
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Constructible<Signal_handler<Server> > _session_request_handler { };
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/**
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* \throw Service_denied
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*/
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Route _resolve_session_request(Genode::Service::Name const &,
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Session_label const &);
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void _handle_create_session_request (Xml_node, Parent::Client::Id);
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void _handle_upgrade_session_request(Xml_node, Parent::Client::Id);
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void _handle_close_session_request (Xml_node, Parent::Client::Id);
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void _handle_session_request(Xml_node);
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void _handle_session_requests();
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void _close_session(Session_state &, Parent::Session_response response);
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/**
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* Session_state::Closed_callback interface
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*/
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void session_closed(Session_state &) override;
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/**
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* Session_state::Ready_callback interface
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*/
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void session_ready(Session_state &) override;
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public:
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/**
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* Constructor
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*
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* \param alloc allocator used for buffering XML config data and
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* for allocating per-service meta data
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*/
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Server(Env &env, Allocator &alloc, Registry<Routed_service> &services,
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Report_update_trigger &report_update_trigger)
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:
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_env(env), _alloc(alloc), _child_services(services),
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_report_update_trigger(report_update_trigger)
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{ }
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void apply_config(Xml_node);
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};
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#endif /* _LIB__SANDBOX__SERVER_H_ */
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