arora: fix Nitpicker plugin demo

Fixes #2425

repos/libports/src/lib/qt5/qpluginwidget/qpluginwidget.cpp

@@ -4,15 +4,19 @@
  * \date   2010-08-26
  */
 
+/* Genode includes */
 #include <base/env.h>
 #include <dataspace/client.h>
 #include <os/timed_semaphore.h>
 #include <rom_session/connection.h>
 #include <util/arg_string.h>
 
+/* libc includes */
+#include <assert.h>
 #include <string.h>
 #include <zlib.h>
 
+/* Qt includes */
 #include <QtGui>
 
 #include <qnitpickerplatformwindow.h>
@@ -47,7 +51,7 @@ const char *config = " \
             <archive name=\"plugin.tar\"/> \
         </config> \
     </start> \
-    <start name=\"init\" caps=\"200\"> \
+    <start name=\"init\" caps=\"2000\"> \
         <resource name=\"RAM\" quantum=\"2G\"/> \
         <configfile name=\"config.plugin\"/> \
         <route> \
@@ -436,6 +440,8 @@ void QPluginWidget::showEvent(QShowEvent *event)
 		QNitpickerPlatformWindow *platform_window =
 			dynamic_cast<QNitpickerPlatformWindow*>(window()->windowHandle()->handle());
 
+		assert(_env != nullptr);
+
 		_plugin_starter = new PluginStarter(_env,
 		                                    _plugin_url, _plugin_args,
 		                                    _max_width, _max_height,

repos/ports/run/arora.run

@@ -123,7 +123,7 @@ append boot_modules {
 	testnit
 	arora
 	ld.lib.so
-	libc.lib.so libm.lib.so lwip.lib.so posix.lib.so
+	libc.lib.so libm.lib.so lwip.lib.so
 	zlib.lib.so libpng.lib.so jpeg.lib.so libssl.lib.so libcrypto.lib.so
 	freetype.lib.so
 	libc_pipe.lib.so

repos/ports/src/app/arora/arora_component.cc

@@ -0,0 +1,37 @@
+/*
+ * \brief  Entry point for Arora
+ * \author Christian Prochaska
+ * \date   2017-05-22
+ */
+
+/*
+ * Copyright (C) 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.
+ */
+
+/* Genode includes */
+#include <libc/component.h>
+
+/* libc includes */
+#include <stdlib.h> /* 'exit'   */
+
+/* Qt includes */
+#include <qpluginwidget/qpluginwidget.h>
+
+/* provided by the application */
+extern "C" int main(int argc, char const **argv);
+
+void Libc::Component::construct(Libc::Env &env)
+{
+	Libc::with_libc([&] {
+
+		QPluginWidget::set_env(&env);
+
+		int argc = 1;
+		char const *argv[] = { "arora", 0 };
+
+		exit(main(argc, argv));
+	});
+}

repos/ports/src/app/arora/demo/nitpicker.html

@@ -74,7 +74,7 @@ div.annotation p { font-style:italic; }
    there is no need for a browser-specific solution. We can just run an arbitrary
    fully-featured Genode subsystem as browser plugin:
   </p>
-<embed src="rom:///nitpicker_plugin.tar" args="ram_quota=32M" type="application/x-genode-plugin" width="640px" height="480px"><br>
+<embed src="rom:///nitpicker_plugin.tar" args="ram_quota=32M, caps=1000" type="application/x-genode-plugin" width="640px" height="480px"><br>
   <p>
    The plugin above consists of multiple processes and uses the same
    binaries as the Genode system you are running. The most significant advantage of this

repos/ports/src/app/arora/demo/nitpicker_plugin/config.plugin

@@ -10,7 +10,7 @@
 		<service name="Nitpicker"/>
 	</parent-provides>
 	<default-route> <any-service> <any-child/> <parent/> </any-service> </default-route>
-	<start name="framebuffer">
+	<start name="framebuffer" caps="100">
 		<binary name="nit_fb"/>
 		<resource name="RAM" quantum="4M"/>
 		<provides>
@@ -20,7 +20,7 @@
 		<route> <any-service> <parent/> </any-service> </route>
 		<config xpos="0" ypos="0" width="640" height="480"/>
 	</start>
-	<start name="nitpicker">
+	<start name="nitpicker" caps="100">
 		<resource name="RAM" quantum="1M"/>
 		<provides><service name="Nitpicker"/></provides>
 		<config>
@@ -30,16 +30,16 @@
 			<default-policy domain="default"/>
 		</config>
 	</start>
-	<start name="pointer">
+	<start name="pointer" caps="100">
 		<resource name="RAM" quantum="1M"/>
 	</start>
-	<start name="launchpad">
+	<start name="launchpad" caps="400">
 		<resource name="RAM" quantum="2G"/>
 		<config xpos="50" ypos="10" width="400" height="400">
-			<launcher name="testnit" ram_quota="1M" />
-			<launcher name="launchpad" ram_quota="6M">
+			<launcher name="testnit" ram_quota="1M" caps="100" />
+			<launcher name="launchpad" ram_quota="6M" caps="200">
 				<config xpos="90" ypos="50" width="400" height="400">
-					<launcher name="testnit" ram_quota="512K" />
+					<launcher name="testnit" ram_quota="512K" caps="100" />
 				</config>
 			</launcher>
 		</config>

repos/ports/src/app/arora/target.mk

@@ -33,6 +33,8 @@ HEADERS_FILTER_OUT = \
 
 QT_MAIN_STACK_SIZE = 768*1024
 
+SRC_CC += arora_component.cc
+
 LIBS += libm libc_lwip libc_lwip_nic_dhcp
 
 RESOURCES += demo_html.qrc
@@ -84,5 +86,3 @@ vpath % $(ARORA_PORT_DIR)/src/app/arora/src/useragent
 vpath % $(ARORA_PORT_DIR)/src/app/arora/src/utils
 
 -include $(QT_TMPL_DIR)/target_final.inc
-
-LIBS += posix