133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
/*
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* \brief Libc environment
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* \author Christian Helmuth
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* \author Emery Hemingway
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* \author Norman Feske
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* \date 2016-01-22
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*/
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/*
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* Copyright (C) 2016-2019 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 _LIBC__INTERNAL__ENV_H_
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#define _LIBC__INTERNAL__ENV_H_
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/* Genode includes */
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#include <base/attached_rom_dataspace.h>
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#include <vfs/simple_env.h>
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/* libc includes */
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#include <libc/component.h> /* 'Libc::Env' */
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namespace Libc { class Env_implementation; }
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class Libc::Env_implementation : public Libc::Env, public Config_accessor
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{
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private:
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Genode::Env &_env;
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Genode::Attached_rom_dataspace _config { _env, "config" };
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Genode::Xml_node _vfs_config()
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{
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try { return _config.xml().sub_node("vfs"); }
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catch (Genode::Xml_node::Nonexistent_sub_node) { }
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try {
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Genode::Xml_node node =
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_config.xml().sub_node("libc").sub_node("vfs");
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Genode::warning("'<config> <libc> <vfs/>' is deprecated, "
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"please move to '<config> <vfs/>'");
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return node;
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}
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catch (Genode::Xml_node::Nonexistent_sub_node) { }
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return Genode::Xml_node("<vfs/>");
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}
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Genode::Xml_node _libc_config()
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{
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try { return _config.xml().sub_node("libc"); }
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catch (Genode::Xml_node::Nonexistent_sub_node) { }
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return Genode::Xml_node("<libc/>");
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}
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Vfs::Simple_env _vfs_env;
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Genode::Xml_node _config_xml() const override {
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return _config.xml(); };
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public:
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Env_implementation(Genode::Env &env, Genode::Allocator &alloc)
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: _env(env), _vfs_env(_env, alloc, _vfs_config()) { }
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/*************************
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** Libc::Env interface **
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*************************/
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Vfs::File_system &vfs() override {
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return _vfs_env.root_dir(); }
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Genode::Xml_node libc_config() override {
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return _libc_config(); }
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/*************************************
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** Libc::Config_accessor interface **
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*************************************/
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Xml_node config() const override { return _config.xml(); }
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/***************************
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** Genode::Env interface **
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***************************/
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Parent &parent() override { return _env.parent(); }
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Cpu_session &cpu() override { return _env.cpu(); }
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Region_map &rm() override { return _env.rm(); }
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Pd_session &pd() override { return _env.pd(); }
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Entrypoint &ep() override { return _env.ep(); }
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Cpu_session_capability cpu_session_cap() override {
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return _env.cpu_session_cap(); }
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Pd_session_capability pd_session_cap() override {
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return _env.pd_session_cap(); }
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Id_space<Parent::Client> &id_space() override {
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return _env.id_space(); }
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Session_capability session(Parent::Service_name const &name,
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Parent::Client::Id id,
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Parent::Session_args const &args,
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Affinity const &aff) override {
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return _env.session(name, id, args, aff); }
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void upgrade(Parent::Client::Id id,
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Parent::Upgrade_args const &args) override {
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return _env.upgrade(id, args); }
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void close(Parent::Client::Id id) override {
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return _env.close(id); }
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/* already done by the libc */
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void exec_static_constructors() override { }
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void reinit(Native_capability::Raw raw) override {
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_env.reinit(raw); }
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void reinit_main_thread(Capability<Region_map> &stack_area_rm) override {
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_env.reinit_main_thread(stack_area_rm); }
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};
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#endif /* _LIBC__INTERNAL__ENV_H_ */
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