From 632ef284638088cb7fb2d07b04a5b00b62d866a0 Mon Sep 17 00:00:00 2001
From: Stefan Kalkowski <stefan.kalkowski@genode-labs.com>
Date: Mon, 29 May 2017 14:52:24 +0200
Subject: [PATCH] os: removal of deprecated os/config.h (fix #2431)

---
 repos/base-nova/src/test/platform/target.mk   |   2 +-
 repos/base/mk/base-libs.mk                    |   2 +-
 repos/dde_bsd/src/test/audio_in/target.mk     |   2 +-
 repos/dde_linux/lib/mk/usb.inc                |   2 +-
 .../src/server/rump_cgd/block_driver.h        |   9 +-
 repos/dde_rump/src/server/rump_cgd/cgd.cc     |  28 ++--
 repos/dde_rump/src/server/rump_cgd/cgd.h      |   4 +-
 repos/dde_rump/src/server/rump_cgd/main.cc    |  13 +-
 .../src/server/liquid_framebuffer/target.mk   |   2 +-
 repos/gems/src/app/cpu_load_display/target.mk |   2 +-
 repos/gems/src/app/mixer_gui_qt/main.cpp      |  43 +++---
 .../gems/src/app/mixer_gui_qt/main_window.cpp |   8 +-
 repos/gems/src/app/mixer_gui_qt/target.mk     |   2 +-
 repos/gems/src/app/themed_decorator/config.h  |   8 +-
 repos/gems/src/app/themed_decorator/main.cc   |   2 +-
 repos/libports/lib/mk/libc_lwip_nic_dhcp.mk   |   2 +-
 repos/libports/run/python.run                 |   2 +-
 .../src/lib/libc_lwip_nic_dhcp/init.cc        | 129 ------------------
 .../src/lib/libc_lwip_nic_dhcp/plugin.cc      | 127 ++++++++++++++++-
 .../src/lib/sdl/audio/SDL_genodeaudio.cc      |  14 +-
 repos/libports/src/server/ffat_fs/main.cc     |  12 +-
 .../src/server/fuse_fs/exfat/target.mk        |   2 +-
 .../src/server/fuse_fs/ext2/target.mk         |   2 +-
 .../src/server/fuse_fs/fuse_fs_main.cc        |  60 ++++----
 .../src/server/fuse_fs/ntfs-3g/target.mk      |   2 +-
 .../libports/src/test/lwip/http_clnt/main.cc  | 104 +++++---------
 .../src/test/lwip/http_srv_static/main.cc     | 116 ++++++----------
 .../src/test/lwip/http_srv_static/target.mk   |   2 +-
 repos/libports/src/test/python/main.cc        |  34 +----
 repos/os/include/os/config.h                  |  72 ----------
 repos/os/include/os/session_policy.h          |  23 +---
 repos/os/lib/mk/config.mk                     |   3 -
 repos/os/lib/mk/spec/imx53/tz_vmm.inc         |   2 +-
 .../drivers/framebuffer/spec/omap4/target.mk  |   2 +-
 repos/os/src/drivers/nic/spec/gem/target.mk   |   2 +-
 repos/os/src/drivers/nic/spec/linux/target.mk |   2 +-
 repos/os/src/drivers/uart/kdb/target.inc      |   2 +-
 repos/os/src/lib/config/config.cc             | 107 ---------------
 repos/os/src/server/nic_dump/target.mk        |   2 +-
 repos/os/src/server/nic_router/target.mk      |   2 +-
 repos/os/src/server/part_blk/target.mk        |   2 +-
 repos/os/src/server/trace_fs/target.mk        |   2 +-
 repos/os/src/test/audio_out/target.mk         |   2 +-
 repos/os/src/test/audio_out_click/target.mk   |   2 +-
 repos/os/src/test/bomb/target.mk              |   2 +-
 repos/os/src/test/dynamic_config/target.mk    |   2 +-
 repos/os/src/test/gpio_led/target.mk          |   2 +-
 repos/os/src/test/gpio_signal/target.mk       |   2 +-
 repos/os/src/test/resource_yield/target.mk    |   2 +-
 repos/os/src/test/rom_blk/target.mk           |   2 +-
 repos/os/src/test/trace/target.mk             |   2 +-
 .../app/gdb_monitor/gdbserver/genode-low.cc   |   9 +-
 repos/ports/src/app/vbox_pointer/target.mk    |   2 +-
 .../test/gdb_monitor_target_config/main.cc    |  21 ++-
 .../test/gdb_monitor_target_config/target.mk  |   2 +-
 repos/ports/src/test/vbox_pointer/target.mk   |   2 +-
 56 files changed, 354 insertions(+), 660 deletions(-)
 delete mode 100644 repos/libports/src/lib/libc_lwip_nic_dhcp/init.cc
 delete mode 100644 repos/os/include/os/config.h
 delete mode 100644 repos/os/lib/mk/config.mk
 delete mode 100644 repos/os/src/lib/config/config.cc

diff --git a/repos/base-nova/src/test/platform/target.mk b/repos/base-nova/src/test/platform/target.mk
index 2901f3975..15c3c49bb 100644
--- a/repos/base-nova/src/test/platform/target.mk
+++ b/repos/base-nova/src/test/platform/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-platform
 SRC_CC = main.cc ipc.cc
-LIBS   = base-nova config
+LIBS   = base-nova
diff --git a/repos/base/mk/base-libs.mk b/repos/base/mk/base-libs.mk
index 5438514f3..addace958 100644
--- a/repos/base/mk/base-libs.mk
+++ b/repos/base/mk/base-libs.mk
@@ -4,7 +4,7 @@
 # These static libraries are filtered out when linking dynamically linked
 # binaries.
 #
-BASE_LIBS += cxx timed_semaphore alarm config
+BASE_LIBS += cxx timed_semaphore alarm
 
 #
 # Name of Genode's dynamic linker
diff --git a/repos/dde_bsd/src/test/audio_in/target.mk b/repos/dde_bsd/src/test/audio_in/target.mk
index 925bf4b82..195fcc4e8 100644
--- a/repos/dde_bsd/src/test/audio_in/target.mk
+++ b/repos/dde_bsd/src/test/audio_in/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-audio_in
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base
diff --git a/repos/dde_linux/lib/mk/usb.inc b/repos/dde_linux/lib/mk/usb.inc
index 5cf6cc723..c6a65f3dc 100644
--- a/repos/dde_linux/lib/mk/usb.inc
+++ b/repos/dde_linux/lib/mk/usb.inc
@@ -1,7 +1,7 @@
 LIB_DIR     = $(REP_DIR)/src/lib/usb
 LIB_INC_DIR = $(LIB_DIR)/include
 
-LIBS     += usb_include lx_kit_setjmp config
+LIBS     += usb_include lx_kit_setjmp
 SRC_CC   += main.cc lx_emul.cc storage.cc \
             input_component.cc evdev.cc nic.cc raw.cc
 SRC_C    += dummies.c scsi.c raw_driver.c
diff --git a/repos/dde_rump/src/server/rump_cgd/block_driver.h b/repos/dde_rump/src/server/rump_cgd/block_driver.h
index c4641f102..538882029 100644
--- a/repos/dde_rump/src/server/rump_cgd/block_driver.h
+++ b/repos/dde_rump/src/server/rump_cgd/block_driver.h
@@ -28,6 +28,7 @@ class Driver : public Block::Driver
 {
 	private:
 
+		Genode::Heap                      &_heap;
 		Block::Session::Operations         _ops;
 		Genode::size_t                     _blk_sz;
 		Block::sector_t                    _blk_cnt;
@@ -37,13 +38,13 @@ class Driver : public Block::Driver
 
 	public:
 
-		Driver(Genode::Entrypoint &ep, Genode::Ram_session &ram)
+		Driver(Genode::Env &env, Genode::Heap &heap)
 		:
-			Block::Driver(ram),
+			Block::Driver(env.ram()), _heap(heap),
 			_blk_sz(0), _blk_cnt(0), _cgd_device(0)
 		{
 			try {
-				_cgd_device = Cgd::init(Genode::env()->heap(), ep);
+				_cgd_device = Cgd::init(_heap, env);
 			} catch (...) {
 				Genode::error("could not initialize cgd device.");
 				throw Genode::Service_denied();
@@ -62,7 +63,7 @@ class Driver : public Block::Driver
 
 		~Driver()
 		{
-			Cgd::deinit(Genode::env()->heap(), _cgd_device);
+			Cgd::deinit(_heap, _cgd_device);
 		}
 
 		bool _range_valid(Block::sector_t num, Genode::size_t count)
diff --git a/repos/dde_rump/src/server/rump_cgd/cgd.cc b/repos/dde_rump/src/server/rump_cgd/cgd.cc
index 9e5e8b5c5..1354e3c7d 100644
--- a/repos/dde_rump/src/server/rump_cgd/cgd.cc
+++ b/repos/dde_rump/src/server/rump_cgd/cgd.cc
@@ -12,7 +12,7 @@
  */
 
 /* Genode includes */
-#include <os/config.h>
+#include <base/attached_rom_dataspace.h>
 
 /* repo includes */
 #include <rump_cgd/cgd.h>
@@ -164,9 +164,9 @@ namespace Cgd {
 			       VALID_ENCODED_KEY_LEN = 48,  /* length of 256Bit key */
 			};
 
-			Genode::Config &_cfg;
-			Action          _action;
-			Params         *_params;
+			Genode::Attached_rom_dataspace  _cfg;
+			Action                          _action;
+			Params                         *_params;
 
 			/**
 			 * Get action from config attribute
@@ -177,8 +177,8 @@ namespace Cgd {
 			{
 				char action_val[ACTION_VALUE_LEN];
 
-				if (_cfg.xml_node().has_attribute("action"))
-					_cfg.xml_node().attribute("action").value(action_val, sizeof (action_val));
+				if (_cfg.xml().has_attribute("action"))
+					_cfg.xml().attribute("action").value(action_val, sizeof (action_val));
 				else
 					return ACTION_INVALID;
 
@@ -224,8 +224,8 @@ namespace Cgd {
 			 */
 			void _parse_config()
 			{
-				if (_cfg.xml_node().has_sub_node("params")) {
-					Genode::Xml_node pnode = _cfg.xml_node().sub_node("params");
+				if (_cfg.xml().has_sub_node("params")) {
+					Genode::Xml_node pnode = _cfg.xml().sub_node("params");
 
 					char method_val[4];
 					pnode.sub_node("method").value(method_val, sizeof (method_val));
@@ -270,9 +270,9 @@ namespace Cgd {
 
 		public:
 
-			Config()
+			Config(Genode::Env &env)
 			:
-				_cfg(*Genode::config()),
+				_cfg(env, "config"),
 				_action(_get_action()),
 				_params(0)
 			{
@@ -444,7 +444,7 @@ Cgd::Device *Cgd::Device::configure(Genode::Allocator *alloc, Cgd::Params const
 /**
  * Initialize a new Cgd::Device
  */
-Cgd::Device *Cgd::init(Genode::Allocator *alloc, Genode::Entrypoint &ep)
+Cgd::Device *Cgd::init(Genode::Allocator &alloc, Genode::Env &env)
 {
 	/* start rumpkernel */
 	rump_init();
@@ -456,7 +456,7 @@ Cgd::Device *Cgd::init(Genode::Allocator *alloc, Genode::Entrypoint &ep)
 		throw Genode::Exception();
 	}
 
-	Cgd::Config cfg;
+	Cgd::Config cfg(env);
 
 	Cgd::Config::Action action = cfg.action();
 
@@ -469,7 +469,7 @@ Cgd::Device *Cgd::init(Genode::Allocator *alloc, Genode::Entrypoint &ep)
 			if (!p)
 				throw Genode::Exception();
 
-			cgd_dev = Cgd::Device::configure(alloc, p, GENODE_DEVICE);
+			cgd_dev = Cgd::Device::configure(&alloc, p, GENODE_DEVICE);
 
 			break;
 		}
@@ -495,7 +495,7 @@ Cgd::Device *Cgd::init(Genode::Allocator *alloc, Genode::Entrypoint &ep)
 /**
  * Deinitialize a Cgd::Device
  */
-void Cgd::deinit(Genode::Allocator *alloc, Cgd::Device *dev)
+void Cgd::deinit(Genode::Allocator &alloc, Cgd::Device *dev)
 {
 	destroy(alloc, dev);
 
diff --git a/repos/dde_rump/src/server/rump_cgd/cgd.h b/repos/dde_rump/src/server/rump_cgd/cgd.h
index d0ee07c0c..f5d198507 100644
--- a/repos/dde_rump/src/server/rump_cgd/cgd.h
+++ b/repos/dde_rump/src/server/rump_cgd/cgd.h
@@ -51,8 +51,8 @@ namespace Cgd {
 	};
 
 
-	Device *init(Genode::Allocator *alloc, Genode::Entrypoint &ep);
-	void    deinit(Genode::Allocator *alloc, Device *dev);
+	Device *init(Genode::Allocator &alloc, Genode::Env &env);
+	void    deinit(Genode::Allocator &alloc, Device *dev);
 }
 
 #endif /* _CGD_H_ */
diff --git a/repos/dde_rump/src/server/rump_cgd/main.cc b/repos/dde_rump/src/server/rump_cgd/main.cc
index 38b1fb94f..9079c7f5a 100644
--- a/repos/dde_rump/src/server/rump_cgd/main.cc
+++ b/repos/dde_rump/src/server/rump_cgd/main.cc
@@ -27,20 +27,19 @@ struct Main
 
 	struct Factory : Block::Driver_factory
 	{
-		Genode::Entrypoint  &ep;
-		Genode::Ram_session &ram;
-		Genode::Heap        &heap;
+		Genode::Env  &env;
+		Genode::Heap &heap;
 
-		Factory(Genode::Entrypoint &ep, Genode::Ram_session &ram, Genode::Heap &heap)
-		: ep(ep), ram(ram), heap(heap) { }
+		Factory(Genode::Env &env, Genode::Heap &heap)
+		: env(env), heap(heap) { }
 
 		Block::Driver *create() {
-			return new (&heap) Driver(ep, ram); }
+			return new (&heap) Driver(env, heap); }
 
 		void destroy(Block::Driver *driver) {
 			Genode::destroy(&heap, driver); }
 
-	} factory { env.ep(), env.ram(), heap };
+	} factory { env, heap };
 
 	Block::Root root { env.ep(), heap, env.rm(), factory };
 
diff --git a/repos/demo/src/server/liquid_framebuffer/target.mk b/repos/demo/src/server/liquid_framebuffer/target.mk
index abb0a602d..f5777fab7 100644
--- a/repos/demo/src/server/liquid_framebuffer/target.mk
+++ b/repos/demo/src/server/liquid_framebuffer/target.mk
@@ -1,5 +1,5 @@
 TARGET   = liquid_fb
-LIBS     = scout_widgets config
+LIBS     = scout_widgets
 SRC_CC   = main.cc services.cc
 INC_DIR += $(REP_DIR)/src/app/scout \
            $(REP_DIR)/src/server/framebuffer/sdl
diff --git a/repos/gems/src/app/cpu_load_display/target.mk b/repos/gems/src/app/cpu_load_display/target.mk
index bec9c28d5..31797990e 100644
--- a/repos/gems/src/app/cpu_load_display/target.mk
+++ b/repos/gems/src/app/cpu_load_display/target.mk
@@ -1,4 +1,4 @@
 TARGET   = cpu_load_display
 SRC_CC   = main.cc
-LIBS     = base config
+LIBS     = base
 INC_DIR += $(PRG_DIR)
diff --git a/repos/gems/src/app/mixer_gui_qt/main.cpp b/repos/gems/src/app/mixer_gui_qt/main.cpp
index 6ee4f02af..0b7226fd1 100644
--- a/repos/gems/src/app/mixer_gui_qt/main.cpp
+++ b/repos/gems/src/app/mixer_gui_qt/main.cpp
@@ -92,26 +92,33 @@ static inline void load_stylesheet()
 }
 
 
-int main(int argc, char *argv[])
+void Libc::Component::construct(Libc::Env &env)
 {
-	Report_thread *report_thread;
-	try { report_thread = new Report_thread(); }
-	catch (...) {
+	Libc::with_libc([&] {
+		initialize_qpa_plugin(env);
+
+		int argc = 1;
+		char const *argv[] = { "mixer_gui_qt", 0 };
+
+		Report_thread *report_thread;
+		try { report_thread = new Report_thread(); }
+		catch (...) {
 		Genode::error("Could not create Report_thread");
 		return -1;
+		}
+
+		QApplication app(argc, argv);
+
+		load_stylesheet();
+
+		QMember<Main_window> main_window(env);
+		main_window->show();
+
+		report_thread->connect_window(main_window);
+		report_thread->start();
+
+		app.connect(&app, SIGNAL(lastWindowClosed()), SLOT(quit()));
+
+		exit(app.exec());
 	}
-
-	QApplication app(argc, argv);
-
-	load_stylesheet();
-
-	QMember<Main_window> main_window;
-	main_window->show();
-
-	report_thread->connect_window(main_window);
-	report_thread->start();
-
-	app.connect(&app, SIGNAL(lastWindowClosed()), SLOT(quit()));
-
-	return app.exec();
 }
diff --git a/repos/gems/src/app/mixer_gui_qt/main_window.cpp b/repos/gems/src/app/mixer_gui_qt/main_window.cpp
index 5890284da..6419c580c 100644
--- a/repos/gems/src/app/mixer_gui_qt/main_window.cpp
+++ b/repos/gems/src/app/mixer_gui_qt/main_window.cpp
@@ -15,7 +15,6 @@
 #include <base/log.h>
 #include <mixer/channel.h>
 #include <base/attached_rom_dataspace.h>
-#include <os/config.h>
 #include <os/reporter.h>
 #include <rom_session/connection.h>
 
@@ -434,7 +433,7 @@ void Main_window::report_changed(void *l, void const *p)
 }
 
 
-Main_window::Main_window()
+Main_window::Main_window(Libc::Env &env)
 :
 	_default_out_volume(0),
 	_default_volume(0),
@@ -445,13 +444,14 @@ Main_window::Main_window()
 
 	using namespace Genode;
 
+	Attached_rom_dataspace config(env, "config");
 	try {
-		Xml_node config_node = config()->xml_node();
+		Xml_node config_node = config.xml();
 		_verbose = config_node.attribute("verbose").has_value("yes");
 	} catch (...) { _verbose = false; }
 
 	try {
-		Xml_node node = config()->xml_node().sub_node("default");
+		Xml_node node = config.xml().sub_node("default");
 		_default_out_volume = node.attribute_value<long>("out_volume", 0);
 		_default_volume     = node.attribute_value<long>("volume", 0);
 		_default_muted      = node.attribute_value<long>("muted", 1);
diff --git a/repos/gems/src/app/mixer_gui_qt/target.mk b/repos/gems/src/app/mixer_gui_qt/target.mk
index 50c13e699..927451da2 100644
--- a/repos/gems/src/app/mixer_gui_qt/target.mk
+++ b/repos/gems/src/app/mixer_gui_qt/target.mk
@@ -8,4 +8,4 @@ include $(QT5_REP_DIR)/src/app/qt5/tmpl/target_final.inc
 
 main_window.o: main_window.moc
 
-LIBS += config qoost qt5_component
+LIBS += qoost qt5_gui qt5_widgets qt5_core libc 
diff --git a/repos/gems/src/app/themed_decorator/config.h b/repos/gems/src/app/themed_decorator/config.h
index ca37ca57a..cf0c8401a 100644
--- a/repos/gems/src/app/themed_decorator/config.h
+++ b/repos/gems/src/app/themed_decorator/config.h
@@ -31,8 +31,14 @@ namespace Decorator {
 
 class Decorator::Config
 {
+	private:
+
+		Genode::Xml_node _config;
+
 	public:
 
+		Config(Genode::Xml_node node) : _config(node) {}
+
 		/**
 		 * Return the base color of the window with the specified title
 		 */
@@ -41,7 +47,7 @@ class Decorator::Config
 			Color result(0, 0, 0);
 
 			try {
-				Genode::Session_policy policy(title);
+				Genode::Session_policy policy(title, _config);
 				result = policy.attribute_value("color", result);
 
 			} catch (Genode::Session_policy::No_policy_defined) { }
diff --git a/repos/gems/src/app/themed_decorator/main.cc b/repos/gems/src/app/themed_decorator/main.cc
index 8e97afafc..75f85caec 100644
--- a/repos/gems/src/app/themed_decorator/main.cc
+++ b/repos/gems/src/app/themed_decorator/main.cc
@@ -101,7 +101,7 @@ struct Decorator::Main : Window_factory_base
 
 	Attached_rom_dataspace _config { _env, "config" };
 
-	Config _decorator_config;
+	Config _decorator_config { _config.xml() };
 
 	void _handle_config();
 
diff --git a/repos/libports/lib/mk/libc_lwip_nic_dhcp.mk b/repos/libports/lib/mk/libc_lwip_nic_dhcp.mk
index 5b8c6e3a4..cf82d8108 100644
--- a/repos/libports/lib/mk/libc_lwip_nic_dhcp.mk
+++ b/repos/libports/lib/mk/libc_lwip_nic_dhcp.mk
@@ -1,4 +1,4 @@
-SRC_CC = init.cc plugin.cc
+SRC_CC = plugin.cc
 
 vpath %.cc $(REP_DIR)/src/lib/libc_lwip_nic_dhcp
 
diff --git a/repos/libports/run/python.run b/repos/libports/run/python.run
index 3ff37ca08..a195cfeb6 100644
--- a/repos/libports/run/python.run
+++ b/repos/libports/run/python.run
@@ -39,7 +39,6 @@ set config {
 	<start name="test-python">
 		<resource name="RAM" quantum="3M"/>
 		<config>
-			<script name="hello.py"/>
 			<vfs>
 				<dir name="dev"> <log/> </dir>
 				<inline name="hello.py">
@@ -57,6 +56,7 @@ print " \r\n\r";
 				</inline>
 			</vfs>
 			<libc stdout="/dev/log" stderr="/dev/log"/>
+			<arg value="hello.py"/>
 		</config>
 	</start>
 </config>
diff --git a/repos/libports/src/lib/libc_lwip_nic_dhcp/init.cc b/repos/libports/src/lib/libc_lwip_nic_dhcp/init.cc
deleted file mode 100644
index 5d90de777..000000000
--- a/repos/libports/src/lib/libc_lwip_nic_dhcp/init.cc
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * \brief  lwip nic interface initialisation using DHCP
- * \author Christian Prochaska
- * \date   2010-04-29
- *
- */
-
-/*
- * Copyright (C) 2010-2017 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.
- */
-
-#include <base/log.h>
-#include <parent/parent.h>
-
-#include <os/config.h>
-#include <nic/packet_allocator.h>
-#include <util/string.h>
-
-#include <lwip/genode.h>
-
-extern "C" {
-#include <lwip/sockets.h>
-#include <lwip/api.h>
-}
-
-
-extern void create_lwip_plugin();
-extern void create_etc_resolv_conf_plugin();
-
-
-void __attribute__((constructor)) init_nic_dhcp(void)
-{
-	enum { BUF_SIZE = Nic::Packet_allocator::DEFAULT_PACKET_SIZE * 128 };
-
-	Genode::log(__func__);
-
-	bool provide_etc_resolv_conf = true;
-
-	char ip_addr_str[16] = {0};
-	char netmask_str[16] = {0};
-	char gateway_str[16] = {0};
-
-	genode_int32_t ip_addr = 0;
-	genode_int32_t netmask = 0;
-	genode_int32_t gateway = 0;
-	Genode::Number_of_bytes tx_buf_size(BUF_SIZE);
-	Genode::Number_of_bytes rx_buf_size(BUF_SIZE);
-
-	try {
-		Genode::Xml_node libc_node = Genode::config()->xml_node().sub_node("libc");
-
-		provide_etc_resolv_conf = libc_node.attribute_value("resolv", provide_etc_resolv_conf);
-
-		try {
-			libc_node.attribute("ip_addr").value(ip_addr_str, sizeof(ip_addr_str));
-		} catch(...) { }
-
-		try {
-			libc_node.attribute("netmask").value(netmask_str, sizeof(netmask_str));
-		} catch(...) { }
-
-		try {
-			libc_node.attribute("gateway").value(gateway_str, sizeof(gateway_str));
-		} catch(...) { }
-
-		try {
-			libc_node.attribute("tx_buf_size").value(&tx_buf_size);
-		} catch(...) { }
-
-		try {
-			libc_node.attribute("rx_buf_size").value(&rx_buf_size);
-		} catch(...) { }
-
-		/* either none or all 3 interface attributes must exist */
-		if ((strlen(ip_addr_str) != 0) ||
-		    (strlen(netmask_str) != 0) ||
-		    (strlen(gateway_str) != 0)) {
-			if (strlen(ip_addr_str) == 0) {
-				Genode::error("missing \"ip_addr\" attribute. Ignoring network interface config.");
-				throw Genode::Xml_node::Nonexistent_attribute();
-			} else if (strlen(netmask_str) == 0) {
-				Genode::error("missing \"netmask\" attribute. Ignoring network interface config.");
-				throw Genode::Xml_node::Nonexistent_attribute();
-			} else if (strlen(gateway_str) == 0) {
-				Genode::error("missing \"gateway\" attribute. Ignoring network interface config.");
-				throw Genode::Xml_node::Nonexistent_attribute();
-			}
-		} else
-			throw -1;
-
-		Genode::log("static network interface: "
-		            "ip_addr=", Genode::Cstring(ip_addr_str), " "
-		            "netmask=", Genode::Cstring(netmask_str), " "
-		            "gateway=", Genode::Cstring(gateway_str));
-
-		genode_uint32_t ip, nm, gw;
-		
-		ip = inet_addr(ip_addr_str);
-		nm = inet_addr(netmask_str);
-		gw = inet_addr(gateway_str);
-
-		if (ip == INADDR_NONE || nm == INADDR_NONE || gw == INADDR_NONE) {
-			Genode::error("invalid network interface config");
-			throw -1;
-		} else {
-			ip_addr = ip;
-			netmask = nm;
-			gateway = gw;
-		}
-	}
-	catch (...) {
-		Genode::log("Using DHCP for interface configuration.");
-	}
-
-	/* make sure the libc_lwip plugin has been created */
-	create_lwip_plugin();
-
-	try {
-		lwip_nic_init(ip_addr, netmask, gateway,
-		              (Genode::size_t)tx_buf_size, (Genode::size_t)rx_buf_size);
-	}
-	catch (Genode::Service_denied) { /* ignore for now */ }
-
-	if (provide_etc_resolv_conf)
-		create_etc_resolv_conf_plugin();
-}
diff --git a/repos/libports/src/lib/libc_lwip_nic_dhcp/plugin.cc b/repos/libports/src/lib/libc_lwip_nic_dhcp/plugin.cc
index 0f5ff5a4b..d00feefb7 100644
--- a/repos/libports/src/lib/libc_lwip_nic_dhcp/plugin.cc
+++ b/repos/libports/src/lib/libc_lwip_nic_dhcp/plugin.cc
@@ -33,9 +33,34 @@
 #include <string.h>
 
 /* Genode includes */
+#include <base/attached_rom_dataspace.h>
 #include <base/env.h>
+#include <base/heap.h>
 #include <util/misc_math.h>
 
+#include <base/log.h>
+#include <parent/parent.h>
+
+#include <nic/packet_allocator.h>
+#include <util/string.h>
+
+#include <lwip/genode.h>
+
+#undef AF_INET6
+#undef MSG_PEEK
+#undef MSG_WAITALL
+#undef MSG_OOB
+#undef MSG_DONTWAIT
+
+namespace Lwip {
+extern "C" {
+#include <lwip/sockets.h>
+#include <lwip/api.h>
+}
+}
+
+extern void create_lwip_plugin();
+
 
 namespace {
 
@@ -92,6 +117,8 @@ namespace {
 	{
 		private:
 
+			Genode::Constructible<Genode::Heap> _heap;
+
 			/**
 			 * File name this plugin feels responsible for
 			 */
@@ -134,14 +161,14 @@ namespace {
 
 			Libc::File_descriptor *open(const char *pathname, int flags)
 			{
-				Plugin_context *context = new (Genode::env()->heap()) Plugin_context;
+				Plugin_context *context = new (*_heap) Plugin_context;
 				context->status_flags(flags);
 				return Libc::file_descriptor_allocator()->alloc(this, context);
 			}
 
 			int close(Libc::File_descriptor *fd)
 			{
-				Genode::destroy(Genode::env()->heap(), context(fd));
+				Genode::destroy(*_heap, context(fd));
 				Libc::file_descriptor_allocator()->free(fd);
 				return 0;
 			}
@@ -223,12 +250,104 @@ namespace {
 					default: Genode::error("fcntl(): command ", cmd, " not supported", cmd); return -1;
 				}
 			}
-	};
 
+			void init(Libc::Env &env) override
+			{
+				_heap.construct(env.ram(), env.rm());
+
+				enum { BUF_SIZE = Nic::Packet_allocator::DEFAULT_PACKET_SIZE * 128 };
+
+				Genode::log(__func__);
+
+				char ip_addr_str[16] = {0};
+				char netmask_str[16] = {0};
+				char gateway_str[16] = {0};
+
+				genode_int32_t ip_addr = 0;
+				genode_int32_t netmask = 0;
+				genode_int32_t gateway = 0;
+				Genode::Number_of_bytes tx_buf_size(BUF_SIZE);
+				Genode::Number_of_bytes rx_buf_size(BUF_SIZE);
+
+				try {
+					Genode::Attached_rom_dataspace config(env, "config");
+					Genode::Xml_node libc_node = config.xml().sub_node("libc");
+
+					try {
+						libc_node.attribute("ip_addr").value(ip_addr_str, sizeof(ip_addr_str));
+					} catch(...) { }
+
+					try {
+						libc_node.attribute("netmask").value(netmask_str, sizeof(netmask_str));
+					} catch(...) { }
+
+					try {
+						libc_node.attribute("gateway").value(gateway_str, sizeof(gateway_str));
+					} catch(...) { }
+
+					try {
+						libc_node.attribute("tx_buf_size").value(&tx_buf_size);
+					} catch(...) { }
+
+					try {
+						libc_node.attribute("rx_buf_size").value(&rx_buf_size);
+					} catch(...) { }
+
+					/* either none or all 3 interface attributes must exist */
+					if ((strlen(ip_addr_str) != 0) ||
+						(strlen(netmask_str) != 0) ||
+						(strlen(gateway_str) != 0)) {
+						if (strlen(ip_addr_str) == 0) {
+							Genode::error("missing \"ip_addr\" attribute. Ignoring network interface config.");
+							throw Genode::Xml_node::Nonexistent_attribute();
+						} else if (strlen(netmask_str) == 0) {
+							Genode::error("missing \"netmask\" attribute. Ignoring network interface config.");
+							throw Genode::Xml_node::Nonexistent_attribute();
+						} else if (strlen(gateway_str) == 0) {
+							Genode::error("missing \"gateway\" attribute. Ignoring network interface config.");
+							throw Genode::Xml_node::Nonexistent_attribute();
+						}
+					} else
+						throw -1;
+
+					Genode::log("static network interface: "
+								"ip_addr=", Genode::Cstring(ip_addr_str), " "
+								"netmask=", Genode::Cstring(netmask_str), " "
+								"gateway=", Genode::Cstring(gateway_str));
+
+					genode_uint32_t ip, nm, gw;
+
+					ip = inet_addr(ip_addr_str);
+					nm = inet_addr(netmask_str);
+					gw = inet_addr(gateway_str);
+
+					if (ip == INADDR_NONE || nm == INADDR_NONE || gw == INADDR_NONE) {
+						Genode::error("invalid network interface config");
+						throw -1;
+					} else {
+						ip_addr = ip;
+						netmask = nm;
+						gateway = gw;
+					}
+				}
+				catch (...) {
+					Genode::log("Using DHCP for interface configuration.");
+				}
+
+				/* make sure the libc_lwip plugin has been created */
+				create_lwip_plugin();
+
+				try {
+					lwip_nic_init(ip_addr, netmask, gateway,
+								  (Genode::size_t)tx_buf_size, (Genode::size_t)rx_buf_size);
+				}
+				catch (Genode::Service_denied) { /* ignore for now */ }
+			}
+	};
 } /* unnamed namespace */
 
 
-void create_etc_resolv_conf_plugin()
+void __attribute__((constructor)) init_libc_lwip_dhcp(void)
 {
 	static Plugin plugin;
 }
diff --git a/repos/libports/src/lib/sdl/audio/SDL_genodeaudio.cc b/repos/libports/src/lib/sdl/audio/SDL_genodeaudio.cc
index 1bd544e0c..f0ab854cc 100644
--- a/repos/libports/src/lib/sdl/audio/SDL_genodeaudio.cc
+++ b/repos/libports/src/lib/sdl/audio/SDL_genodeaudio.cc
@@ -15,10 +15,10 @@
  */
 
 #include <base/allocator_avl.h>
+#include <base/attached_rom_dataspace.h>
 #include <base/log.h>
 #include <base/thread.h>
 #include <audio_out_session/connection.h>
-#include <os/config.h>
 
 
 enum {
@@ -75,13 +75,17 @@ static Signal_receiver *signal_receiver()
 }
 
 
-static void read_config()
+static void read_config(Genode::Signal_context_capability sigh =
+                        Genode::Signal_context_capability())
 {
 	/* read volume from config file */
 	try {
 		unsigned int config_volume;
 
-		Genode::config()->xml_node().sub_node("sdl_audio_volume")
+		Genode::Attached_rom_dataspace config("config");
+		if (sigh.valid()) config.sigh(sigh);
+		else              config.update();
+		config.xml().sub_node("sdl_audio_volume")
 			.attribute("value").value(&config_volume);
 
 		volume = (float)config_volume / 100;
@@ -163,8 +167,7 @@ static SDL_AudioDevice *GENODEAUD_CreateDevice(int devindex)
 		}
 	}
 
-	Genode::config()->sigh(signal_receiver()->manage(&config_signal_context));
-	read_config();
+	read_config(signal_receiver()->manage(&config_signal_context));
 
 	return _this;
 }
@@ -221,7 +224,6 @@ static void GENODEAUD_PlayAudio(_THIS)
 
 	if (signal_receiver()->pending()) {
 		signal_receiver()->wait_for_signal();
-		Genode::config()->reload();
 		read_config();
 	}
 
diff --git a/repos/libports/src/server/ffat_fs/main.cc b/repos/libports/src/server/ffat_fs/main.cc
index e0afd4c68..70c9d2c03 100644
--- a/repos/libports/src/server/ffat_fs/main.cc
+++ b/repos/libports/src/server/ffat_fs/main.cc
@@ -829,11 +829,11 @@ namespace File_system {
 	{
 		private:
 
-			Genode::Env       &_env;
-			Genode::Allocator &_md_alloc;
-			Genode::Allocator &_heap;
-
-			Directory         &_root_dir;
+			Genode::Env                   &_env;
+			Genode::Allocator             &_md_alloc;
+			Genode::Allocator             &_heap;
+			Genode::Attached_rom_dataspace _config { _env, "config" };
+			Directory                     &_root_dir;
 
 		protected:
 
@@ -852,7 +852,7 @@ namespace File_system {
 
 				Session_label const label = label_from_args(args);
 				try {
-					Session_policy policy(label);
+					Session_policy policy(label, _config.xml());
 
 					/*
 					 * Determine directory that is used as root directory of
diff --git a/repos/libports/src/server/fuse_fs/exfat/target.mk b/repos/libports/src/server/fuse_fs/exfat/target.mk
index c29ebf7ff..2dbf3485b 100644
--- a/repos/libports/src/server/fuse_fs/exfat/target.mk
+++ b/repos/libports/src/server/fuse_fs/exfat/target.mk
@@ -6,7 +6,7 @@ SRC_C    = $(notdir $(EXFAT_DIR)/fuse/main.c)
 SRC_CC   = fuse_fs_main.cc \
            init.cc
 
-LIBS     = config libc libfuse libexfat
+LIBS     = libc libfuse libexfat
 INC_DIR += $(PRG_DIR)/..
 
 CC_OPT += -Wno-unused-function
diff --git a/repos/libports/src/server/fuse_fs/ext2/target.mk b/repos/libports/src/server/fuse_fs/ext2/target.mk
index e4add616b..f3205bae0 100644
--- a/repos/libports/src/server/fuse_fs/ext2/target.mk
+++ b/repos/libports/src/server/fuse_fs/ext2/target.mk
@@ -9,7 +9,7 @@ SRC_C  = $(filter-out $(FILTER_OUT), $(notdir $(wildcard $(FUSE_EXT2_DIR)/*.c)))
 SRC_CC   = fuse_fs_main.cc \
            init.cc
 
-LIBS     = config libc libfuse libext2fs
+LIBS     = libc libfuse libext2fs
 
 CC_OPT += -DHAVE_CONFIG_H -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64
 
diff --git a/repos/libports/src/server/fuse_fs/fuse_fs_main.cc b/repos/libports/src/server/fuse_fs/fuse_fs_main.cc
index 24b41f164..18808882f 100644
--- a/repos/libports/src/server/fuse_fs/fuse_fs_main.cc
+++ b/repos/libports/src/server/fuse_fs/fuse_fs_main.cc
@@ -16,7 +16,6 @@
 #include <file_system/node_handle_registry.h>
 #include <file_system_session/rpc_object.h>
 #include <base/attached_rom_dataspace.h>
-#include <os/config.h>
 #include <os/session_policy.h>
 #include <root/component.h>
 #include <util/xml_node.h>
@@ -41,7 +40,7 @@ class File_system::Session_component : public Session_rpc_object
 {
 	private:
 
-		Genode::Entrypoint   &_ep;
+		Genode::Env          &_env;
 		Allocator            &_md_alloc;
 		Directory            &_root;
 		Node_handle_registry  _handle_registry;
@@ -155,19 +154,18 @@ class File_system::Session_component : public Session_rpc_object
 		/**
 		 * Constructor
 		 */
-		Session_component(size_t              tx_buf_size,
-		                  Genode::Entrypoint &ep,
-		                  Genode::Region_map &rm,
-		                  char const         *root_dir,
-		                  bool                writeable,
-		                  Allocator          &md_alloc)
+		Session_component(size_t      tx_buf_size,
+		                  Genode::Env &env,
+		                  char const *root_dir,
+		                  bool        writeable,
+		                  Allocator  &md_alloc)
 		:
-			Session_rpc_object(env()->ram_session()->alloc(tx_buf_size), rm, ep.rpc_ep()),
-			_ep(ep),
+			Session_rpc_object(env.ram().alloc(tx_buf_size), env.rm(), env.ep().rpc_ep()),
+			_env(env),
 			_md_alloc(md_alloc),
 			_root(*new (&_md_alloc) Directory(_md_alloc, root_dir, false)),
 			_writeable(writeable),
-			_process_packet_handler(_ep, *this, &Session_component::_process_packets)
+			_process_packet_handler(_env.ep(), *this, &Session_component::_process_packets)
 		{
 			_tx.sigh_packet_avail(_process_packet_handler);
 			_tx.sigh_ready_to_ack(_process_packet_handler);
@@ -181,7 +179,7 @@ class File_system::Session_component : public Session_rpc_object
 			Fuse::sync_fs();
 
 			Dataspace_capability ds = tx_sink()->dataspace();
-			env()->ram_session()->free(static_cap_cast<Ram_dataspace>(ds));
+			_env.ram().free(static_cap_cast<Ram_dataspace>(ds));
 			destroy(&_md_alloc, &_root);
 		}
 
@@ -402,8 +400,8 @@ class File_system::Root : public Root_component<Session_component>
 {
 	private:
 
-		Genode::Entrypoint &_ep;
-		Genode::Region_map &_rm;
+		Genode::Env                   &_env;
+		Genode::Attached_rom_dataspace _config { _env, "config" };
 
 	protected:
 
@@ -423,7 +421,7 @@ class File_system::Root : public Root_component<Session_component>
 
 			Session_label const label = label_from_args(args);
 			try {
-				Session_policy policy(label);
+				Session_policy policy(label, _config.xml());
 
 				/*
 				 * Determine directory that is used as root directory of
@@ -485,7 +483,7 @@ class File_system::Root : public Root_component<Session_component>
 				throw Insufficient_ram_quota();
 			}
 			return new (md_alloc())
-				Session_component(tx_buf_size, _ep, _rm, root_dir, writeable, *md_alloc());
+				Session_component(tx_buf_size, _env, root_dir, writeable, *md_alloc());
 		}
 
 	public:
@@ -493,39 +491,29 @@ class File_system::Root : public Root_component<Session_component>
 		/**
 		 * Constructor
 		 *
-		 * \param ep          entrypoint
-		 * \param sig_rec     signal receiver used for handling the
-		 *                    data-flow signals of packet streams
+		 * \param env         environment
 		 * \param md_alloc    meta-data allocator
 		 */
-		Root(Genode::Entrypoint &ep, Allocator &md_alloc, Genode::Region_map &rm)
-		:
-			Root_component<Session_component>(&ep.rpc_ep(), &md_alloc),
-			_ep(ep), _rm(rm)
-		{ }
+		Root(Genode::Env & env, Allocator &md_alloc)
+		: Root_component<Session_component>(env.ep(), md_alloc),
+		  _env(env) { }
 };
 
 
 struct File_system::Main
 {
-	Genode::Entrypoint &ep;
-	Genode::Region_map &rm;
+	Genode::Env & env;
+	Sliced_heap   sliced_heap { env.ram(), env.rm() };
+	Root          fs_root     { env, sliced_heap    };
 
-	/*
-	 * Initialize root interface
-	 */
-	Sliced_heap sliced_heap = { env()->ram_session(), env()->rm_session() };
-
-	Root fs_root = { ep, sliced_heap, rm };
-
-	Main(Genode::Entrypoint &ep, Genode::Region_map &rm) : ep(ep), rm(rm)
+	Main(Genode::Env & env) : env(env)
 	{
 		if (!Fuse::init_fs()) {
 			Genode::error("FUSE fs initialization failed");
 			return;
 		}
 
-		env()->parent()->announce(ep.manage(fs_root));
+		env.parent().announce(env.ep().manage(fs_root));
 	}
 
 	~Main()
@@ -543,6 +531,6 @@ struct File_system::Main
 
 void Libc::Component::construct(Libc::Env &env)
 {
-	static File_system::Main inst(env.ep(), env.rm());
+	static File_system::Main inst(env);
 }
 
diff --git a/repos/libports/src/server/fuse_fs/ntfs-3g/target.mk b/repos/libports/src/server/fuse_fs/ntfs-3g/target.mk
index 8a68cc465..dda090795 100644
--- a/repos/libports/src/server/fuse_fs/ntfs-3g/target.mk
+++ b/repos/libports/src/server/fuse_fs/ntfs-3g/target.mk
@@ -6,7 +6,7 @@ SRC_C   := ntfs-3g.c ntfs-3g_common.c
 SRC_CC  := fuse_fs_main.cc \
            init.cc
 
-LIBS    := config libc libfuse libntfs-3g
+LIBS    := libc libfuse libntfs-3g
 
 CC_OPT  := -DHAVE_TIMESPEC -DHAVE_CONFIG_H -DRECORD_LOCKING_NOT_IMPLEMENTED
 
diff --git a/repos/libports/src/test/lwip/http_clnt/main.cc b/repos/libports/src/test/lwip/http_clnt/main.cc
index c1e7f5452..cda634b79 100644
--- a/repos/libports/src/test/lwip/http_clnt/main.cc
+++ b/repos/libports/src/test/lwip/http_clnt/main.cc
@@ -13,15 +13,12 @@
  */
 
 /* Genode includes */
+#include <base/attached_rom_dataspace.h>
 #include <base/log.h>
-#include <base/thread.h>
-#include <util/string.h>
-#include <timer_session/connection.h>
-#include <nic/packet_allocator.h>
-#include <os/config.h>
-#include <base/sleep.h>
-
 #include <libc/component.h>
+#include <nic/packet_allocator.h>
+#include <timer_session/connection.h>
+#include <util/string.h>
 
 extern "C" {
 #include <lwip/sockets.h>
@@ -32,90 +29,46 @@ extern "C" {
 #include <lwip/genode.h>
 
 
-static const char *http_get_request =
-"GET / HTTP/1.0\r\nHost: localhost:80\r\n\r\n"; /* simple HTTP request header */
-
-using namespace Genode;
-
-
-template <Genode::size_t N>
-static Genode::String<N> read_string_attribute(Genode::Xml_node node, char const *attr,
-                                               Genode::String<N> default_value)
-{
-	try {
-		char buf[N];
-		node.attribute(attr).value(buf, sizeof(buf));
-		return Genode::String<N>(Genode::Cstring(buf));
-	}
-	catch (...) {
-		return default_value; }
-}
-
-
-bool static_ip_config(uint32_t & ip, uint32_t & nm, uint32_t & gw)
-{
-	enum { ADDR_STR_SZ = 16 };
-	Xml_node libc_node = config()->xml_node().sub_node("libc");
-	String<ADDR_STR_SZ> ip_str =
-		read_string_attribute<ADDR_STR_SZ>(libc_node, "ip_addr", String<ADDR_STR_SZ>());
-	String<ADDR_STR_SZ> nm_str =
-		read_string_attribute<ADDR_STR_SZ>(libc_node, "netmask", String<ADDR_STR_SZ>());
-	String<ADDR_STR_SZ> gw_str =
-		read_string_attribute<ADDR_STR_SZ>(libc_node, "gateway", String<ADDR_STR_SZ>());
-
-	ip = inet_addr(ip_str.string());
-	nm = inet_addr(nm_str.string());
-	gw = inet_addr(gw_str.string());
-	if (ip == INADDR_NONE || nm == INADDR_NONE || gw == INADDR_NONE) { return false; }
-	log("static ip config: ip=", ip_str, " nm=",  nm_str, " gw=", gw_str);
-	return true;
-}
-
-
 /**
- * The client thread simply loops endless,
+ * The client simply loops endless,
  * and sends as much 'http get' requests as possible,
  * printing out the response.
  */
 void Libc::Component::construct(Libc::Env &env)
 {
+	using namespace Genode;
+	using Address = Genode::String<16>;
+
 	enum { BUF_SIZE = Nic::Packet_allocator::DEFAULT_PACKET_SIZE * 128 };
 
 	static Timer::Connection _timer(env);
 	_timer.msleep(2000);
 	lwip_tcpip_init();
 
-	uint32_t ip = 0;
-	uint32_t nm = 0;
-	uint32_t gw = 0;
-	bool static_ip = static_ip_config(ip, nm, gw);
+	uint32_t ip = 0, nm = 0, gw = 0;
+	Address serv_addr, ip_addr, netmask, gateway;
 
-	enum { ADDR_STR_SZ = 16 };
-	char serv_addr[ADDR_STR_SZ] = { 0 };
-	Xml_node config_node = config()->xml_node();
-	try { config_node.attribute("server_ip").value(serv_addr, ADDR_STR_SZ); }
-	catch(...) {
-		error("Missing \"server_ip\" attribute.");
-		throw Xml_node::Nonexistent_attribute();
-	}
+	Attached_rom_dataspace config(env, "config");
+	Xml_node config_node = config.xml();
+	Xml_node libc_node   = env.libc_config();
+	try {
+		libc_node.attribute("ip_addr").value(&ip_addr);
+		libc_node.attribute("netmask").value(&netmask);
+		libc_node.attribute("gateway").value(&gateway);
+		ip = inet_addr(ip_addr.string());
+		nm = inet_addr(netmask.string());
+		gw = inet_addr(gateway.string());
+	} catch (...) {}
+	config_node.attribute("server_ip").value(&serv_addr);
 
-	if (static_ip) {
-		if (lwip_nic_init(ip, nm, gw, BUF_SIZE, BUF_SIZE)) {
-			error("We got no IP address!");
-			exit(1);
-		}
-	} else {
-		if( lwip_nic_init(0, 0, 0, BUF_SIZE, BUF_SIZE))
-		{
-			error("got no IP address!");
-			exit(1);
-		}
+	if (lwip_nic_init(ip, nm, gw, BUF_SIZE, BUF_SIZE)) {
+		error("We got no IP address!");
+		exit(1);
 	}
 
 	for(int j = 0; j != 5; ++j) {
 		_timer.msleep(2000);
 
-
 		log("Create new socket ...");
 		int s = lwip_socket(AF_INET, SOCK_STREAM, 0 );
 		if (s < 0) {
@@ -135,7 +88,7 @@ void Libc::Component::construct(Libc::Env &env)
 		struct sockaddr_in addr;
 		addr.sin_port = htons(port);
 		addr.sin_family = AF_INET;
-		addr.sin_addr.s_addr = inet_addr(serv_addr);
+		addr.sin_addr.s_addr = inet_addr(serv_addr.string());
 
 		if((lwip_connect(s, (struct sockaddr *)&addr, sizeof(addr))) < 0) {
 			error("Could not connect!");
@@ -144,6 +97,11 @@ void Libc::Component::construct(Libc::Env &env)
 		}
 
 		log("Send request...");
+
+		/* simple HTTP request header */
+		static const char *http_get_request =
+			"GET / HTTP/1.0\r\nHost: localhost:80\r\n\r\n";
+
 		unsigned long bytes = lwip_send(s, (char*)http_get_request,
 		                                Genode::strlen(http_get_request), 0);
 		if ( bytes < 0 ) {
diff --git a/repos/libports/src/test/lwip/http_srv_static/main.cc b/repos/libports/src/test/lwip/http_srv_static/main.cc
index 5a96bebc6..1c79edfa4 100644
--- a/repos/libports/src/test/lwip/http_srv_static/main.cc
+++ b/repos/libports/src/test/lwip/http_srv_static/main.cc
@@ -18,12 +18,11 @@
  */
 
 /* Genode includes */
+#include <base/attached_rom_dataspace.h>
 #include <base/log.h>
-#include <base/thread.h>
-#include <util/string.h>
+#include <libc/component.h>
 #include <nic/packet_allocator.h>
-#include <os/config.h>
-#include <base/snprintf.h>
+#include <util/string.h>
 
 /* LwIP includes */
 extern "C" {
@@ -33,15 +32,7 @@ extern "C" {
 
 #include <lwip/genode.h>
 
-
-const static char http_html_hdr[] =
-	"HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"; /* HTTP response header */
-
-enum { HTTP_INDEX_HTML_SZ = 1024 };
-
-static char http_index_html[HTTP_INDEX_HTML_SZ]; /* HTML page */
-
-using namespace Genode;
+using Response = Genode::String<1024>;
 
 
 /**
@@ -49,7 +40,7 @@ using namespace Genode;
  *
  * \param conn  socket connected to the client
  */
-void http_server_serve(int conn)
+void http_server_serve(int conn, Response & response)
 {
 	char    buf[1024];
 	ssize_t buflen;
@@ -57,7 +48,7 @@ void http_server_serve(int conn)
 	/* Read the data from the port, blocking if nothing yet there.
 	   We assume the request (the part we care about) is in one packet */
 	buflen = lwip_recv(conn, buf, 1024, 0);
-	log("Packet received!");
+	Genode::log("Packet received!");
 
 	/* Ignore all receive errors */
 	if (buflen > 0) {
@@ -71,63 +62,46 @@ void http_server_serve(int conn)
 			buf[3] == ' ' &&
 			buf[4] == '/' ) {
 
-			log("Will send response");
-
-			/* Send http header */
-			lwip_send(conn, http_html_hdr, Genode::strlen(http_html_hdr), 0);
+			Genode::log("Will send response");
 
 			/* Send our HTML page */
-			lwip_send(conn, http_index_html, Genode::strlen(http_index_html), 0);
+			lwip_send(conn, response.string(), response.length(), 0);
 		}
 	}
 }
 
-
-template <Genode::size_t N>
-static Genode::String<N> read_string_attribute(Genode::Xml_node node, char const *attr,
-                                               Genode::String<N> default_value)
-{
-	try {
-		char buf[N];
-		node.attribute(attr).value(buf, sizeof(buf));
-		return Genode::String<N>(Genode::Cstring(buf));
+struct Initialization_failed {};
+#define ASSERT(cond, err) \
+	if (!cond) { \
+		Genode::error(err); \
+		throw Initialization_failed(); \
 	}
-	catch (...) {
-		return default_value; }
-}
 
-
-int main()
+void Libc::Component::construct(Libc::Env & env)
 {
 	using namespace Genode;
+	using Address  = Genode::String<16>;
 
 	enum { BUF_SIZE = Nic::Packet_allocator::DEFAULT_PACKET_SIZE * 128 };
 
-	int s;
 
 	lwip_tcpip_init();
 
-	enum { ADDR_STR_SZ = 16 };
-
 	uint32_t ip = 0;
 	uint32_t nm = 0;
 	uint32_t gw = 0;
 	unsigned port = 0;
 
-	Xml_node config_node = config()->xml_node();
-	Xml_node libc_node   = config_node.sub_node("libc");
-	String<ADDR_STR_SZ> ip_addr_str =
-		read_string_attribute<ADDR_STR_SZ>(libc_node, "ip_addr", String<ADDR_STR_SZ>());
-	String<ADDR_STR_SZ> netmask_str =
-		read_string_attribute<ADDR_STR_SZ>(libc_node, "netmask", String<ADDR_STR_SZ>());
-	String<ADDR_STR_SZ> gateway_str =
-		read_string_attribute<ADDR_STR_SZ>(libc_node, "gateway", String<ADDR_STR_SZ>());
+	Address ip_addr_str;
+	Address netmask_str;
+	Address gateway_str;
 
-	try { config_node.attribute("port").value(&port); }
-	catch(...) {
-		error("Missing \"port\" attribute.");
-		throw Xml_node::Nonexistent_attribute();
-	}
+	Attached_rom_dataspace config(env, "config");
+	Xml_node libc_node = env.libc_config();
+	libc_node.attribute("ip_addr").value(&ip_addr_str);
+	libc_node.attribute("netmask").value(&netmask_str);
+	libc_node.attribute("gateway").value(&gateway_str);
+	config.xml().attribute("port").value(&port);
 
 	log("static network interface: ip=", ip_addr_str, " nm=", netmask_str, " gw=", gateway_str);
 
@@ -135,48 +109,41 @@ int main()
 	nm = inet_addr(netmask_str.string());
 	gw = inet_addr(gateway_str.string());
 
-	if (ip == INADDR_NONE || nm == INADDR_NONE || gw == INADDR_NONE) {
-		error("Invalid network interface config.");
-		throw -1;
-	}
+	ASSERT((ip != INADDR_NONE && nm != INADDR_NONE && gw != INADDR_NONE),
+	       "Invalid network interface config.");
 
 	/* Initialize network stack  */
-	if (lwip_nic_init(ip, nm, gw, BUF_SIZE, BUF_SIZE)) {
-		error("got no IP address!");
-		return -1;
-	}
+	ASSERT(!lwip_nic_init(ip, nm, gw, BUF_SIZE, BUF_SIZE),
+	       "got no IP address!");
 
 	log("Create new socket ...");
-	if((s = lwip_socket(AF_INET, SOCK_STREAM, 0)) < 0) {
-		error("no socket available!");
-		return -1;
-	}
 
-	Genode::snprintf(
-		http_index_html, HTTP_INDEX_HTML_SZ,
+	int s;
+	ASSERT(((s = lwip_socket(AF_INET, SOCK_STREAM, 0)) >= 0),
+	       "no socket available!");
+
+	static Response response(
+		"HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"
 		"<html><head></head><body>"
 		"<h1>HTTP server at %s:%u</h1>"
 		"<p>This is a small test page.</body></html>",
 		ip_addr_str.string(), port);
 
 	log("Now, I will bind ...");
+
 	struct sockaddr_in in_addr;
 	in_addr.sin_family = AF_INET;
 	in_addr.sin_port = htons(port);
 	in_addr.sin_addr.s_addr = INADDR_ANY;
-	if(lwip_bind(s, (struct sockaddr*)&in_addr, sizeof(in_addr))) {
-		error("bind failed!");
-		return -1;
-	}
+	ASSERT(!lwip_bind(s, (struct sockaddr*)&in_addr, sizeof(in_addr)),
+	       "bind failed!");
 
 	log("Now, I will listen ...");
-	if(lwip_listen(s, 5)) {
-		error("listen failed!");
-		return -1;
-	}
+	ASSERT(!lwip_listen(s, 5),
+	       "listen failed!");
 
 	log("Start the server loop ...");
-	while(true) {
+	while (true) {
 		struct sockaddr addr;
 		socklen_t len = sizeof(addr);
 		int client = lwip_accept(s, &addr, &len);
@@ -184,8 +151,7 @@ int main()
 			warning("invalid socket from accept!");
 			continue;
 		}
-		http_server_serve(client);
+		http_server_serve(client, response);
 		lwip_close(client);
 	}
-	return 0;
 }
diff --git a/repos/libports/src/test/lwip/http_srv_static/target.mk b/repos/libports/src/test/lwip/http_srv_static/target.mk
index 5ff243d16..773776c27 100644
--- a/repos/libports/src/test/lwip/http_srv_static/target.mk
+++ b/repos/libports/src/test/lwip/http_srv_static/target.mk
@@ -1,5 +1,5 @@
 TARGET   = test-lwip_httpsrv_static
-LIBS     = lwip posix config
+LIBS     = lwip posix
 SRC_CC   = main.cc
 
 INC_DIR += $(REP_DIR)/src/lib/lwip/include
diff --git a/repos/libports/src/test/python/main.cc b/repos/libports/src/test/python/main.cc
index 7572cb0ff..02a7cb9f0 100644
--- a/repos/libports/src/test/python/main.cc
+++ b/repos/libports/src/test/python/main.cc
@@ -16,7 +16,6 @@
 
 /* Genode includes */
 #include <base/log.h>
-#include <os/config.h>
 
 /* libc includes */
 #include <fcntl.h>
@@ -24,39 +23,18 @@
 
 extern "C"  int __sread(void *, char *, int);
 
-static bool process_config(char **file)
-{
-	using namespace Genode;
-	static char file_name[64];
 
-	try {
-		Xml_node config_node = config()->xml_node();
-		Xml_node script_node = config_node.sub_node("script");
-		script_node.attribute("name").value(file_name, sizeof(file_name));
-		*file = file_name;
-		return true;
-	}
-	catch (Xml_node::Nonexistent_sub_node) {
-		Genode::error("no 'config/script' sub node in config found"); }
-	catch (Xml_node::Nonexistent_attribute) {
-		Genode::error("no 'name' attribute in 'script' node found"); }
-
-	return false;
-}
-
-
-int main()
+int main(int argc, char const ** args)
 {
 	using namespace Genode;
 
-	char *name;
-	if (!process_config(&name)) {
-		Genode::error("no script found");
-		return 1;
+	if (argc < 1) {
+		Genode::error("Need <scriptname>.py as argument!");
+		return -1;
 	}
 
-	Genode::log("Found script: ", Genode::Cstring(name));
-	FILE* fp = fopen(name, "r");
+	char * name = const_cast<char*>(args[0]);
+	FILE * fp = fopen(name, "r");
 	//fp._flags = __SRD;
 	Py_SetProgramName(name);
 	//don't need the 'site' module
diff --git a/repos/os/include/os/config.h b/repos/os/include/os/config.h
deleted file mode 100644
index 9c2d7b482..000000000
--- a/repos/os/include/os/config.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * \brief  Access to process configuration
- * \author Norman Feske
- * \date   2010-05-04
- */
-
-/*
- * Copyright (C) 2010-2017 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 INCLUDED_BY_OS_CONFIG_CC
-#ifndef INCLUDED_FROM_OS_SESSION_POLICY_H
-#warning os/config.h is deprecated, use 'Attached_rom_dataspace' instead
-#endif
-#endif
-
-#ifndef _INCLUDE__OS__CONFIG_H_
-#define _INCLUDE__OS__CONFIG_H_
-
-#include <rom_session/connection.h>
-#include <dataspace/client.h>
-#include <util/xml_node.h>
-#include <base/exception.h>
-
-namespace Genode {
-
-	class Config;
-
-	/**
-	 * Return singleton instance of config
-	 */
-	Reconstructible<Config> &config();
-}
-
-
-class Genode::Config
-{
-	private:
-
-		Rom_connection       _config_rom;
-		Dataspace_capability _config_ds;
-		Xml_node             _config_xml;
-
-	public:
-
-		/**
-		 * Constructor
-		 */
-		Config();
-
-		Xml_node xml_node();
-
-		/**
-		 * Register signal handler for tracking config modifications
-		 */
-		void sigh(Signal_context_capability cap);
-
-		/**
-		 * Reload configuration
-		 *
-		 * \throw Invalid  if the new configuration has an invalid syntax
-		 *
-		 * This method is meant to be called as response to a signal
-		 * received by the signal handler as registered via 'sigh()'.
-		 */
-		void reload();
-};
-
-#endif /* _INCLUDE__OS__CONFIG_H_ */
diff --git a/repos/os/include/os/session_policy.h b/repos/os/include/os/session_policy.h
index e53767c8e..425e294d8 100644
--- a/repos/os/include/os/session_policy.h
+++ b/repos/os/include/os/session_policy.h
@@ -14,13 +14,10 @@
 #ifndef _INCLUDE__OS__SESSION_POLICY_H_
 #define _INCLUDE__OS__SESSION_POLICY_H_
 
-#include <util/arg_string.h>
 #include <base/session_label.h>
-
-/* to be removed along with the \deprecated API */
-#define INCLUDED_FROM_OS_SESSION_POLICY_H
-#include <os/config.h>
-#undef INCLUDED_FROM_OS_SESSION_POLICY_H
+#include <session/session.h>
+#include <util/arg_string.h>
+#include <util/xml_node.h>
 
 namespace Genode {
 
@@ -229,20 +226,6 @@ class Genode::Session_policy : public Xml_node
 		:
 			Xml_node(_query_policy(label, config))
 		{ }
-
-		/**
-		 * Constructor
-		 *
-		 * \param label   label used as the selector of a policy
-		 *
-		 * \deprecated  use constructor with explicit 'config' argument
-		 */
-		template <size_t N> explicit Session_policy(String<N> const &label) __attribute__((deprecated));
 };
 
-template <Genode::size_t N> Genode::Session_policy::Session_policy(String<N> const &label)
-:
-	Xml_node(_query_policy(label, Genode::config()->xml_node()))
-{ }
-
 #endif /* _INCLUDE__OS__SESSION_POLICY_H_ */
diff --git a/repos/os/lib/mk/config.mk b/repos/os/lib/mk/config.mk
deleted file mode 100644
index e47bb7504..000000000
--- a/repos/os/lib/mk/config.mk
+++ /dev/null
@@ -1,3 +0,0 @@
-SRC_CC = config.cc
-
-vpath config.cc $(REP_DIR)/src/lib/config
diff --git a/repos/os/lib/mk/spec/imx53/tz_vmm.inc b/repos/os/lib/mk/spec/imx53/tz_vmm.inc
index 50abab75a..6cc27ca48 100644
--- a/repos/os/lib/mk/spec/imx53/tz_vmm.inc
+++ b/repos/os/lib/mk/spec/imx53/tz_vmm.inc
@@ -1,4 +1,4 @@
-LIBS     += base config
+LIBS     += base
 SRC_CC   += serial_driver.cc block_driver.cc vm_base.cc spec/imx53/main.cc
 INC_DIR  += $(REP_DIR)/src/server/tz_vmm/spec/imx53
 INC_DIR  += $(REP_DIR)/src/server/tz_vmm/include
diff --git a/repos/os/src/drivers/framebuffer/spec/omap4/target.mk b/repos/os/src/drivers/framebuffer/spec/omap4/target.mk
index 25e306b47..b7e1490f6 100644
--- a/repos/os/src/drivers/framebuffer/spec/omap4/target.mk
+++ b/repos/os/src/drivers/framebuffer/spec/omap4/target.mk
@@ -7,7 +7,7 @@
 TARGET   = fb_drv
 REQUIRES = omap4
 SRC_CC   = main.cc
-LIBS     = base blit config
+LIBS     = base blit
 INC_DIR += $(PRG_DIR)
 
 vpath main.cc $(PRG_DIR)
diff --git a/repos/os/src/drivers/nic/spec/gem/target.mk b/repos/os/src/drivers/nic/spec/gem/target.mk
index 2329b02b9..0c277f4f5 100644
--- a/repos/os/src/drivers/nic/spec/gem/target.mk
+++ b/repos/os/src/drivers/nic/spec/gem/target.mk
@@ -1,5 +1,5 @@
 REQUIRES = cadence_gem
 TARGET   = nic_drv
 SRC_CC   = main.cc
-LIBS     = base config
+LIBS     = base
 INC_DIR += $(PRG_DIR)
diff --git a/repos/os/src/drivers/nic/spec/linux/target.mk b/repos/os/src/drivers/nic/spec/linux/target.mk
index 03403ac6a..6d3ce2b42 100644
--- a/repos/os/src/drivers/nic/spec/linux/target.mk
+++ b/repos/os/src/drivers/nic/spec/linux/target.mk
@@ -1,4 +1,4 @@
 TARGET   = linux_nic_drv
 REQUIRES = linux
-LIBS     = lx_hybrid config
+LIBS     = lx_hybrid
 SRC_CC   = main.cc
diff --git a/repos/os/src/drivers/uart/kdb/target.inc b/repos/os/src/drivers/uart/kdb/target.inc
index a03f70423..7e4b4f748 100644
--- a/repos/os/src/drivers/uart/kdb/target.inc
+++ b/repos/os/src/drivers/uart/kdb/target.inc
@@ -1,6 +1,6 @@
 TARGET   = kdb_uart_drv
 SRC_CC   = main.cc
-LIBS    += base config
+LIBS    += base
 INC_DIR += $(REP_DIR)/src/drivers/uart $(REP_DIR)/src/drivers/uart/kdb
 
 vpath main.cc $(REP_DIR)/src/drivers/uart
diff --git a/repos/os/src/lib/config/config.cc b/repos/os/src/lib/config/config.cc
deleted file mode 100644
index 6a16f7c48..000000000
--- a/repos/os/src/lib/config/config.cc
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- * \brief  Access to process configuration
- * \author Norman Feske
- * \date   2010-05-04
- *
- * \deprecated
- */
-
-/*
- * Copyright (C) 2010-2017 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.
- */
-
-#define INCLUDED_BY_OS_CONFIG_CC
-#include <os/config.h>
-#undef INCLUDED_BY_OS_CONFIG_CC
-
-using namespace Genode;
-
-Xml_node _config_xml_node(Dataspace_capability config_ds)
-{
-	if (!config_ds.valid())
-		throw Exception();
-
-	return Xml_node(env_deprecated()->rm_session()->attach(config_ds),
-	                Genode::Dataspace_client(config_ds).size());
-}
-
-
-/**
- * Fallback XML node used if the configuration is broken
- */
-static Xml_node fallback_config_xml()
-{
-	return Xml_node("<config/>");
-}
-
-
-void Config::reload()
-{
-	if (!this)
-		return;
-
-	try {
-		/* re-acquire dataspace from ROM session */
-		if (_config_ds.valid())
-			env_deprecated()->rm_session()->detach(_config_xml.addr());
-
-		_config_ds = _config_rom.dataspace();
-
-		/* re-initialize XML node with new config data */
-		_config_xml = _config_xml_node(_config_ds);
-
-	} catch (Genode::Xml_node::Invalid_syntax) {
-		Genode::error("config ROM has invalid syntax");
-		_config_xml = fallback_config_xml();
-	}
-}
-
-
-Xml_node Config::xml_node()
-{
-	if (!this)
-		return fallback_config_xml();
-
-	return _config_xml;
-}
-
-
-void Config::sigh(Signal_context_capability cap)
-{
-	if (this)
-		_config_rom.sigh(cap);
-}
-
-
-Config::Config()
-:
-	_config_rom(false, "config"),
-	_config_ds(_config_rom.dataspace()),
-	_config_xml(_config_xml_node(_config_ds))
-{ }
-
-
-Reconstructible<Config> &Genode::config()
-{
-	static bool config_failed = false;
-	if (!config_failed) {
-		try {
-			static Reconstructible<Config> config_inst;
-			return config_inst;
-		} catch (Genode::Rom_connection::Rom_connection_failed) {
-			Genode::error("Could not obtain config file");
-		} catch (Genode::Xml_node::Invalid_syntax) {
-			Genode::error("Config file has invalid syntax");
-		} catch(...) {
-			Genode::error("Config dataspace is invalid");
-		}
-	}
-	/* do not try again to construct 'config_inst' */
-	config_failed = true;
-	class Config_construction_failed : Genode::Exception { };
-	throw Config_construction_failed();
-}
-
diff --git a/repos/os/src/server/nic_dump/target.mk b/repos/os/src/server/nic_dump/target.mk
index 7737008c7..6c68a3fa5 100644
--- a/repos/os/src/server/nic_dump/target.mk
+++ b/repos/os/src/server/nic_dump/target.mk
@@ -1,6 +1,6 @@
 TARGET = nic_dump
 
-LIBS += base net config
+LIBS += base net
 
 SRC_CC += component.cc main.cc uplink.cc interface.cc
 
diff --git a/repos/os/src/server/nic_router/target.mk b/repos/os/src/server/nic_router/target.mk
index 3404d8d9a..298a1200f 100644
--- a/repos/os/src/server/nic_router/target.mk
+++ b/repos/os/src/server/nic_router/target.mk
@@ -1,6 +1,6 @@
 TARGET = nic_router
 
-LIBS += base net config
+LIBS += base net
 
 SRC_CC += arp_waiter.cc ip_rule.cc
 SRC_CC += component.cc port_allocator.cc forward_rule.cc
diff --git a/repos/os/src/server/part_blk/target.mk b/repos/os/src/server/part_blk/target.mk
index c2965d314..c51a440c9 100644
--- a/repos/os/src/server/part_blk/target.mk
+++ b/repos/os/src/server/part_blk/target.mk
@@ -1,3 +1,3 @@
 TARGET = part_blk
-LIBS   = base config
+LIBS   = base
 SRC_CC = main.cc
diff --git a/repos/os/src/server/trace_fs/target.mk b/repos/os/src/server/trace_fs/target.mk
index 3e5592cee..a78fa1046 100644
--- a/repos/os/src/server/trace_fs/target.mk
+++ b/repos/os/src/server/trace_fs/target.mk
@@ -1,4 +1,4 @@
 TARGET   = trace_fs
 SRC_CC   = main.cc
-LIBS     = base config
+LIBS     = base
 INC_DIR += $(PRG_DIR)
diff --git a/repos/os/src/test/audio_out/target.mk b/repos/os/src/test/audio_out/target.mk
index e3bfd7869..feb92edbe 100644
--- a/repos/os/src/test/audio_out/target.mk
+++ b/repos/os/src/test/audio_out/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-audio_out
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base
diff --git a/repos/os/src/test/audio_out_click/target.mk b/repos/os/src/test/audio_out_click/target.mk
index d731cef59..fdf852a4a 100644
--- a/repos/os/src/test/audio_out_click/target.mk
+++ b/repos/os/src/test/audio_out_click/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-audio_out_click
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base
diff --git a/repos/os/src/test/bomb/target.mk b/repos/os/src/test/bomb/target.mk
index 38cbc4659..c1142e202 100644
--- a/repos/os/src/test/bomb/target.mk
+++ b/repos/os/src/test/bomb/target.mk
@@ -1,3 +1,3 @@
 TARGET = bomb
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base
diff --git a/repos/os/src/test/dynamic_config/target.mk b/repos/os/src/test/dynamic_config/target.mk
index aa23a399d..45a4db151 100644
--- a/repos/os/src/test/dynamic_config/target.mk
+++ b/repos/os/src/test/dynamic_config/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-dynamic_config
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base
diff --git a/repos/os/src/test/gpio_led/target.mk b/repos/os/src/test/gpio_led/target.mk
index 9a94cad9c..a55b3217c 100644
--- a/repos/os/src/test/gpio_led/target.mk
+++ b/repos/os/src/test/gpio_led/target.mk
@@ -1,6 +1,6 @@
 TARGET   = led_gpio_drv
 REQUIRES = gpio
 SRC_CC   = main.cc
-LIBS     = base config
+LIBS     = base
 
 vpath main.cc $(PRG_DIR)
diff --git a/repos/os/src/test/gpio_signal/target.mk b/repos/os/src/test/gpio_signal/target.mk
index 235be5b18..88f8de3da 100644
--- a/repos/os/src/test/gpio_signal/target.mk
+++ b/repos/os/src/test/gpio_signal/target.mk
@@ -2,6 +2,6 @@ TARGET   = signal_gpio_drv
 REQUIRES = gpio
 SRC_CC   = main.cc
 INC_DIR += $(PRG_DIR)
-LIBS     = base config
+LIBS     = base
 
 vpath main.cc $(PRG_DIR)
diff --git a/repos/os/src/test/resource_yield/target.mk b/repos/os/src/test/resource_yield/target.mk
index fa32b1c46..864d76eea 100644
--- a/repos/os/src/test/resource_yield/target.mk
+++ b/repos/os/src/test/resource_yield/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-resource_yield
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base
diff --git a/repos/os/src/test/rom_blk/target.mk b/repos/os/src/test/rom_blk/target.mk
index 0db517a1a..a7ccab986 100644
--- a/repos/os/src/test/rom_blk/target.mk
+++ b/repos/os/src/test/rom_blk/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-rom_blk
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base
diff --git a/repos/os/src/test/trace/target.mk b/repos/os/src/test/trace/target.mk
index 9bd4c73f2..a5a6abb45 100644
--- a/repos/os/src/test/trace/target.mk
+++ b/repos/os/src/test/trace/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-trace
 SRC_CC = main.cc
-LIBS  += base config
+LIBS  += base
diff --git a/repos/ports/src/app/gdb_monitor/gdbserver/genode-low.cc b/repos/ports/src/app/gdb_monitor/gdbserver/genode-low.cc
index b0be6d46b..2eaeef695 100644
--- a/repos/ports/src/app/gdb_monitor/gdbserver/genode-low.cc
+++ b/repos/ports/src/app/gdb_monitor/gdbserver/genode-low.cc
@@ -14,7 +14,7 @@
 
 /* Genode includes */
 #include <base/env.h>
-#include <os/config.h>
+#include <base/attached_rom_dataspace.h>
 
 /* GDB monitor includes */
 #include "app_child.h"
@@ -443,8 +443,9 @@ extern "C" int fork()
 
 	static char filename[32] = "";
 
+	Genode::Attached_rom_dataspace config { *genode_env, "config" };
 	try {
-		config()->xml_node().sub_node("target").attribute("name").value(filename, sizeof(filename));
+		config.xml().sub_node("target").attribute("name").value(filename, sizeof(filename));
 	} catch (Xml_node::Nonexistent_sub_node) {
 		error("missing '<target>' sub node");
 		return -1;
@@ -454,7 +455,7 @@ extern "C" int fork()
 	}
 
 	/* extract target node from config file */
-	Xml_node target_node = config()->xml_node().sub_node("target");
+	Xml_node target_node = config.xml().sub_node("target");
 
 	/*
 	 * preserve the configured amount of memory for gdb_monitor and give the
@@ -462,7 +463,7 @@ extern "C" int fork()
 	 */
 	Number_of_bytes preserved_ram_quota = 0;
 	try {
-		Xml_node preserve_node = config()->xml_node().sub_node("preserve");
+		Xml_node preserve_node = config.xml().sub_node("preserve");
 		if (preserve_node.attribute("name").has_value("RAM"))
 			preserve_node.attribute("quantum").value(&preserved_ram_quota);
 		else
diff --git a/repos/ports/src/app/vbox_pointer/target.mk b/repos/ports/src/app/vbox_pointer/target.mk
index 6bf2ff508..ba1a6dd90 100644
--- a/repos/ports/src/app/vbox_pointer/target.mk
+++ b/repos/ports/src/app/vbox_pointer/target.mk
@@ -1,3 +1,3 @@
 TARGET = vbox_pointer
 SRC_CC = main.cc policy.cc
-LIBS  += base config
+LIBS  += base
diff --git a/repos/ports/src/test/gdb_monitor_target_config/main.cc b/repos/ports/src/test/gdb_monitor_target_config/main.cc
index 4c762328a..96bbd52c7 100644
--- a/repos/ports/src/test/gdb_monitor_target_config/main.cc
+++ b/repos/ports/src/test/gdb_monitor_target_config/main.cc
@@ -12,20 +12,17 @@
  */
 
 /* Genode includes */
-#include <os/config.h>
+#include <base/attached_rom_dataspace.h>
+#include <base/component.h>
+#include <base/log.h>
 
-using namespace Genode;
-
-int main(void)
+void Component::construct(Genode::Env & env)
 {
+	Genode::Attached_rom_dataspace config(env, "config");
 	try {
-		config()->xml_node().sub_node("test_config_subnode");
-	} catch (Xml_node::Nonexistent_sub_node) {
-		error("missing '<test_config_subnode>' sub node");
-		return -1;
+		config.xml().sub_node("test_config_subnode");
+		Genode::log("Test succeeded");
+	} catch (Genode::Xml_node::Nonexistent_sub_node) {
+		Genode::error("missing '<test_config_subnode>' sub node");
 	}
-
-	log("Test succeeded");
-
-	return 0;
 }
diff --git a/repos/ports/src/test/gdb_monitor_target_config/target.mk b/repos/ports/src/test/gdb_monitor_target_config/target.mk
index 983ddc65b..44568173e 100644
--- a/repos/ports/src/test/gdb_monitor_target_config/target.mk
+++ b/repos/ports/src/test/gdb_monitor_target_config/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-gdb_monitor_target_config
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base
diff --git a/repos/ports/src/test/vbox_pointer/target.mk b/repos/ports/src/test/vbox_pointer/target.mk
index 5c587b4de..19ef27af1 100644
--- a/repos/ports/src/test/vbox_pointer/target.mk
+++ b/repos/ports/src/test/vbox_pointer/target.mk
@@ -1,3 +1,3 @@
 TARGET = test-vbox_pointer
 SRC_CC = main.cc
-LIBS   = base config
+LIBS   = base