Test capability integrity

The test application tries to print a message using init's own LOG
session without permission.

This patch fixes #106.

base/run/cap_integrity.run

@@ -0,0 +1,39 @@
+build "core init test/cap_integrity"
+
+create_boot_directory
+
+install_config {
+	<config>
+		<parent-provides>
+			<service name="ROM"/>
+			<service name="RAM"/>
+			<service name="CPU"/>
+			<service name="RM"/>
+			<service name="CAP"/>
+			<service name="PD"/>
+			<service name="SIGNAL"/>
+			<service name="LOG"/>
+		</parent-provides>
+		<default-route>
+			<any-service> <parent/> </any-service>
+		</default-route>
+		<start name="test-cap_integrity">
+			<resource name="RAM" quantum="10M"/>
+		</start>
+	</config>
+}
+
+build_boot_image "core init test-cap_integrity"
+
+append qemu_args "-nographic -m 64"
+
+# increase expect buffer size, since there might be many log messages
+match_max -d 100000
+
+run_genode_until {child exited with exit value 0.*} 60
+
+if {[regexp {\[init\] test message} $output]} {
+	exit -1
+}
+
+puts "Test succeeded"

base/src/test/cap_integrity/main.cc

@@ -0,0 +1,36 @@
+/*
+ * \brief  Testing capability integrity
+ * \author Christian Prochaska
+ * \date   2012-02-10
+ *
+ */
+
+/*
+ * Copyright (C) 2008-2012 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#include <base/env.h>
+#include <log_session/connection.h>
+
+using namespace Genode;
+
+int main(int argc, char **argv)
+{
+	printf("--- capability integrity test ---\n");
+
+	/* try the first 1000 local name IDs */
+	for (int local_name = 0; local_name < 1000; local_name++) {
+		Log_session_capability log_session_cap =
+			reinterpret_cap_cast<Log_session>(Native_capability(env()->ram_session_cap().dst(), local_name));
+		Log_session_client log_session_client(log_session_cap);
+		try {
+			log_session_client.write("test message");
+		} catch(...) { }
+	}
+
+	printf("--- finished capability integrity test ---\n");
+	return 0;
+}

base/src/test/cap_integrity/target.mk

@@ -0,0 +1,3 @@
+TARGET   = test-cap_integrity
+SRC_CC   = main.cc
+LIBS     = env