Simple fork test and run script

Currently the test is failing because fork is not yet implemented.

ports/run/noux_fork.run

@@ -0,0 +1,77 @@
+if {![have_spec x86_32]} {
+	puts "\nNoux is supported on the x86_32 architecture only\n"
+	exit 0
+}
+if {[have_spec linux]} {
+	puts "\nLinux not supported because of missing UART driver\n"
+	exit 0
+}
+
+build "core init drivers/timer drivers/uart noux lib/libc_noux test/noux_fork"
+
+# strip coreutils binaries and create tar archive
+exec tar cfv bin/noux_fork.tar -h -C bin test-noux_fork
+
+create_boot_directory
+
+install_config {
+	<config verbose="yes">
+		<parent-provides>
+			<service name="ROM"/>
+			<service name="LOG"/>
+			<service name="CAP"/>
+			<service name="RAM"/>
+			<service name="RM"/>
+			<service name="CPU"/>
+			<service name="PD"/>
+			<service name="IRQ"/>
+			<service name="IO_MEM"/>
+			<service name="IO_PORT"/>
+			<service name="SIGNAL"/>
+		</parent-provides>
+		<default-route>
+			<any-service> <any-child/> <parent/> </any-service>
+		</default-route>
+		<start name="timer">
+			<resource name="RAM" quantum="512K"/>
+			<provides><service name="Timer"/></provides>
+		</start>
+		<start name="uart_drv">
+			<resource name="RAM" quantum="1M"/>
+			<provides><service name="Terminal"/></provides>
+			<config>
+				<policy label="noux" uart="1"/>
+			</config>
+		</start>
+		<start name="noux">
+			<resource name="RAM" quantum="1G"/>
+			<config>
+				<fstab> <tar name="noux_fork.tar" at="/"/> </fstab>
+				<start name="test-noux_fork"> </start>
+			</config>
+		</start>
+	</config>
+}
+
+build_boot_image {
+	core init timer uart_drv ld.lib.so noux libc.lib.so libm.lib.so
+	libc_noux.lib.so noux_fork.tar
+}
+
+#
+# Redirect the output of Noux via the virtual serial port 1 into a file to be
+# dumped after the successful completion of the test.
+#
+set noux_output_file "noux_output.log"
+
+append qemu_args " -nographic"
+append qemu_args " -serial mon:stdio"
+append qemu_args " -serial file:$noux_output_file"
+
+#run_genode_until "child exited with exit value 0.*\n" 20
+run_genode_until "child.*exited.*\n" 20
+
+puts "[exec cat $noux_output_file]"
+
+exec rm bin/noux_fork.tar
+exec rm $noux_output_file

ports/src/test/noux_fork/target.mk

@@ -0,0 +1,3 @@
+TARGET = test-noux_fork
+SRC_CC = test.cc
+LIBS   = libc libc_noux

ports/src/test/noux_fork/test.cc

@@ -0,0 +1,38 @@
+/*
+ * \brief  Simple fork test
+ * \author Norman Feske
+ * \date   2012-02-14
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+int main(int, char **)
+{
+	int i = 0;
+
+	pid_t fork_ret = fork();
+	if (fork_ret < 0) {
+		printf("Error: fork returned %d, errno=%d\n", fork_ret, errno);
+		return -1;
+	}
+
+	printf("pid %d: fork returned %d\n", getpid(), fork_ret);
+
+	if (fork_ret == 0) {
+		printf("pid %d: child says hello\n", getpid());
+		for (int j = 0; j < 50; j++) {
+			printf("pid %d: child  i = %d\n", getpid(), i);
+		}
+	}
+
+	printf("pid %d: parent received child pid %d, starts counting...\n",
+	       getpid(), fork_ret);
+
+	for (; i < 50; ) {
+		printf("pid %d: parent i = %d\n", getpid(), i++);
+	}
+
+	return 0;
+}