lx_fs: add os/run/lx_fs_import.run run script

This new runscript demonstrates how a file can be overwritten by vfs
import with the flag overwrite set to false. This is due to a bug
in lx_fs that is not propagating an ernno EEXIST syscall error.

Issue genodelabs#4104

repos/os/run/lx_fs_import.run

@@ -0,0 +1,124 @@
+assert_spec linux
+
+set depot_archives { }
+set build_components { }
+set boot_modules { }
+
+lappend depot_archives [depot_user]/src/[base_src]
+lappend depot_archives [depot_user]/src/init
+lappend depot_archives [depot_user]/src/vfs
+lappend depot_archives [depot_user]/src/vfs_import
+
+if { [get_cmd_switch --autopilot] } {
+	lappend depot_archives [depot_user]/src/lx_fs
+} else {
+	lappend build_components server/lx_fs
+	lappend boot_modules lx_fs
+}
+
+set config {
+<config>
+	<parent-provides>
+		<service name="ROM"/>
+		<service name="IRQ"/>
+		<service name="IO_MEM"/>
+		<service name="IO_PORT"/>
+		<service name="PD"/>
+		<service name="RM"/>
+		<service name="CPU"/>
+		<service name="LOG"/>
+	</parent-provides>
+
+	<default-route>
+		<any-service> <parent/> <any-child/> </any-service>
+	</default-route>
+
+	<resource name="RAM" preserve="200M"/>
+	<resource name="CAP" preserve="1000"/>
+
+	<default caps="50"/>
+
+	<start name="timer" caps="100">
+		<resource name="RAM" quantum="1M"/>
+		<provides> <service name="Timer"/> </provides>
+	</start>
+
+
+	<start name="import_lx_fs" caps="220" ld="no">
+		<binary name="lx_fs"/>
+		<resource name="RAM" quantum="8M"/>
+		<provides>
+			<service name="File_system"/>
+		</provides>
+		<config>
+			<policy label="import_showcase -> " root="/" writeable="yes"/>
+		</config>
+		<route>
+			<any-service> <parent/> <any-child/> </any-service>
+		</route>
+	</start>
+
+	<start name="import_showcase" caps="100">
+		<binary name="vfs"/>
+		<resource name="RAM" quantum="4M"/>
+		<provides>
+			<service name="File_system"/>
+		</provides>
+		<config>
+			<vfs> <fs/>
+				<import overwrite="false">
+					<dir name="test-existing-file">
+						<inline name="a_file">Hello Friend!</inline>
+					</dir>
+					<dir name="test-file">
+						<inline name="foo">bar</inline>
+					</dir>
+					<dir name="test-existing-directory">
+						<inline name="foo">bar</inline>
+					</dir>
+				</import>
+			</vfs>
+		</config>
+		<route>
+			<service name="File_system"> <child name="import_lx_fs"/> </service>
+			<any-service> <parent/> <any-child/> </any-service>
+		</route>
+	</start>
+
+</config>
+}
+
+create_boot_directory
+install_config $config
+
+import_from_depot $depot_archives
+
+if { [llength $build_components] > 0 } {
+	build $build_components
+}
+
+build_boot_image $boot_modules
+
+## Create files before genode is run
+exec mkdir -p [run_dir]/genode/test-existing-file
+exec echo "This file already exist." > [run_dir]/genode/test-existing-file/a_file
+exec mkdir -p [run_dir]/genode/test-existing-directory
+
+append qemu_args " -nographic "
+
+run_genode_until "Warning: skipping copy of file /test-existing-file/a_file, OPEN_ERR_EXISTS" 20
+
+set created_file { [run_dir]/genode/test-file/foo }
+
+if { [file exists $created_file] == 1 } {
+	puts { "Imported file not found." }
+	exit 1
+}
+
+set created_file_in_dir { [run_dir]/genode/test-existing-directory/foo }
+
+if { [file exists $created_file] == 1 } {
+	puts { "Imported file not found." }
+	exit 1
+}
+

tool/autopilot.list

@@ -25,6 +25,7 @@ lwip
 lx_hybrid_ctors
 lx_hybrid_exception
 lx_hybrid_pthread_ipc
+lx_fs_import
 microcode
 migrate
 moon