test: Docker integration test for disable networking

We are disabling networking at the configuration.toml as well as running
a container with the flag of --net=none.

Fixes clearcontainers#932

Signed-off-by: Gabriela Cervantes <[email protected]>

Makefile

@@ -97,6 +97,7 @@ network:
 	bash -f .ci/install_bats.sh
 	bats integration/network/macvlan/macvlan_driver.bats
 	bats integration/network/ipvlan/ipvlan_driver.bats
+	bats integration/network/disable_net/net_none.bats
 
 ramdisk:
 	bash -f integration/ramdisk/ramdisk.sh

integration/network/disable_net/net_none.bats

@@ -0,0 +1,63 @@
+#!/usr/bin/env bats
+#
+# Copyright (c) 2018 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+load "${BATS_TEST_DIRNAME}/../../../lib/common.bash"
+
+setup () {
+	clean_env
+
+	# Check that processes are not running
+	run check_processes
+	echo "$output"
+	[ "$status" -eq 0 ]
+}
+
+@test "Disable net" {
+	IMAGE="busybox"
+	PAYLOAD="tail -f /dev/null"
+	NAME="test"
+
+	extract_kata_env
+
+	# Get the name of the network name at the configuration.toml
+	NETWORK_NAME=$(grep -E "internetworking_model=" ${RUNTIME_CONFIG_PATH} | head -1 | cut -d '"' -f2)
+
+	# Disable the network
+	sudo sed -i 's/#disable_new_netns = true/disable_new_netns = true/g' ${RUNTIME_CONFIG_PATH}
+	sudo sed -i 's/internetworking_model=".*"/internetworking_model="none"/g' ${RUNTIME_CONFIG_PATH}
+
+	# Run a container without network
+	docker run -d --runtime=${RUNTIME} --name=${NAME} --net=none ${IMAGE} ${PAYLOAD}
+
+	# Check namespaces of host init daemon with no network
+	no_network_ns=$(sudo stat -L -c "%i" /proc/1/ns/net)
+
+	# Check namespaces of the processes with no network
+	general_processes=( ${PROXY_PATH} ${HYPERVISOR_PATH} ${SHIM_PATH} )
+	for i in "${general_processes[@]}"; do
+		process_pid=$(pgrep -f "$i")
+		process_ns=$(sudo stat -L -c "%i" /proc/$process_pid/ns/net)
+		# Compare namespace of host init daemon is equal to namespace of the process
+		[ "$no_network_ns" == "$process_ns" ]
+	done
+
+	# Remove container
+	docker rm -f $NAME
+
+	# Restart the network at the configuration.toml
+	sudo sed -i 's/disable_new_netns = true/#disable_new_netns = true/g' ${RUNTIME_CONFIG_PATH}
+	sudo sed -i 's/internetworking_model="none"/internetworking_model="'"${NETWORK_NAME}"'"/g' ${RUNTIME_CONFIG_PATH}
+}
+
+teardown() {
+	clean_env
+
+	# Check that processes are not running
+	run check_processes
+	echo "$output"
+	[ "$status" -eq 0 ]
+}