Add presubmit test for vendor overlay
Add a test that creates files in the appropriate vendor_overlay directory and
verifies that they are correctly overlaid (or not) onto /vendor after rebooting.
Test: locally running atest
Change-Id: I65860dbeb837f86ac030fa51b3af93844e82de96
diff --git a/TEST_MAPPING b/TEST_MAPPING
index cc85408..716378b 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -10,6 +10,9 @@
"name": "fs_mgr_unit_test"
},
{
+ "name": "fs_mgr_vendor_overlay_test"
+ },
+ {
"name": "init_tests"
},
{
diff --git a/fs_mgr/tests/Android.bp b/fs_mgr/tests/Android.bp
index 565597a..59af924 100644
--- a/fs_mgr/tests/Android.bp
+++ b/fs_mgr/tests/Android.bp
@@ -53,3 +53,15 @@
},
host_supported: true,
}
+
+java_test_host {
+ name: "fs_mgr_vendor_overlay_test",
+
+ srcs: ["src/**/VendorOverlayHostTest.java"],
+
+ libs: ["tradefed"],
+
+ test_config: "vendor-overlay-test.xml",
+
+ test_suites: ["general-tests"],
+}
diff --git a/fs_mgr/tests/src/com/android/tests/vendoroverlay/VendorOverlayHostTest.java b/fs_mgr/tests/src/com/android/tests/vendoroverlay/VendorOverlayHostTest.java
new file mode 100644
index 0000000..f08cab2
--- /dev/null
+++ b/fs_mgr/tests/src/com/android/tests/vendoroverlay/VendorOverlayHostTest.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.tests.vendoroverlay;
+
+import com.android.tradefed.device.DeviceNotAvailableException;
+import com.android.tradefed.testtype.DeviceJUnit4ClassRunner;
+import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test;
+import com.android.tradefed.util.CommandResult;
+import com.android.tradefed.util.CommandStatus;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Assume;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/**
+ * Test the vendor overlay feature. Requires adb remount with OverlayFS.
+ */
+@RunWith(DeviceJUnit4ClassRunner.class)
+public class VendorOverlayHostTest extends BaseHostJUnit4Test {
+ boolean wasRoot = false;
+
+ @Before
+ public void setup() throws DeviceNotAvailableException {
+ wasRoot = getDevice().isAdbRoot();
+ if (!wasRoot) {
+ Assume.assumeTrue("Test requires root", getDevice().enableAdbRoot());
+ }
+
+ Assume.assumeTrue("Skipping vendor overlay test due to lack of necessary OverlayFS support",
+ testConditionsMet());
+
+ getDevice().remountSystemWritable();
+ // Was OverlayFS used by adb remount? Without it we can't safely re-enable dm-verity.
+ Pattern vendorPattern = Pattern.compile("^overlay .+ /vendor$", Pattern.MULTILINE);
+ Pattern productPattern = Pattern.compile("^overlay .+ /product$", Pattern.MULTILINE);
+ CommandResult result = getDevice().executeShellV2Command("df");
+ Assume.assumeTrue("OverlayFS not used for adb remount on /vendor",
+ vendorPattern.matcher(result.getStdout()).find());
+ Assume.assumeTrue("OverlayFS not used for adb remount on /product",
+ productPattern.matcher(result.getStdout()).find());
+ }
+
+ private boolean cmdSucceeded(CommandResult result) {
+ return result.getStatus() == CommandStatus.SUCCESS;
+ }
+
+ private void assumeMkdirSuccess(String dir) throws DeviceNotAvailableException {
+ CommandResult result = getDevice().executeShellV2Command("mkdir -p " + dir);
+ Assume.assumeTrue("Couldn't create " + dir, cmdSucceeded(result));
+ }
+
+ /**
+ * Tests that files in the appropriate /product/vendor_overlay dir are overlaid onto /vendor.
+ */
+ @Test
+ public void testVendorOverlay() throws DeviceNotAvailableException {
+ String vndkVersion = getDevice().executeShellV2Command("getprop ro.vndk.version").getStdout();
+
+ // Create files and modify policy
+ CommandResult result = getDevice().executeShellV2Command(
+ "echo '/(product|system/product)/vendor_overlay/" + vndkVersion +
+ "/.* u:object_r:vendor_file:s0'" + " >> /system/etc/selinux/plat_file_contexts");
+ Assume.assumeTrue("Couldn't modify plat_file_contexts", cmdSucceeded(result));
+ assumeMkdirSuccess("/vendor/testdir");
+ assumeMkdirSuccess("/vendor/diffcontext");
+ assumeMkdirSuccess("/product/vendor_overlay/'" + vndkVersion + "'/testdir");
+ result = getDevice().executeShellV2Command(
+ "echo overlay > /product/vendor_overlay/'" + vndkVersion + "'/testdir/test");
+ Assume.assumeTrue("Couldn't create text file in testdir", cmdSucceeded(result));
+ assumeMkdirSuccess("/product/vendor_overlay/'" + vndkVersion + "'/noexist/test");
+ assumeMkdirSuccess("/product/vendor_overlay/'" + vndkVersion + "'/diffcontext/test");
+ result = getDevice().executeShellV2Command(
+ "restorecon -r /product/vendor_overlay/'" + vndkVersion + "'/testdir");
+ Assume.assumeTrue("Couldn't write testdir context", cmdSucceeded(result));
+
+ getDevice().reboot();
+
+ // Test that the file was overlaid properly
+ result = getDevice().executeShellV2Command("[ $(cat /vendor/testdir/test) = overlay ]");
+ Assert.assertTrue("test file was not overlaid onto /vendor/", cmdSucceeded(result));
+ result = getDevice().executeShellV2Command("[ ! -d /vendor/noexist/test ]");
+ Assert.assertTrue("noexist dir shouldn't exist on /vendor", cmdSucceeded(result));
+ result = getDevice().executeShellV2Command("[ ! -d /vendor/diffcontext/test ]");
+ Assert.assertTrue("diffcontext dir shouldn't exist on /vendor", cmdSucceeded(result));
+ }
+
+ // Duplicate of fs_mgr_overlayfs_valid() logic
+ // Requires root
+ public boolean testConditionsMet() throws DeviceNotAvailableException {
+ if (cmdSucceeded(getDevice().executeShellV2Command(
+ "[ -e /sys/module/overlay/parameters/override_creds ]"))) {
+ return true;
+ }
+ if (cmdSucceeded(getDevice().executeShellV2Command("[ ! -e /sys/module/overlay ]"))) {
+ return false;
+ }
+ CommandResult result = getDevice().executeShellV2Command("awk '{ print $3 }' /proc/version");
+ Pattern kernelVersionPattern = Pattern.compile("([1-9])[.]([0-9]+).*");
+ Matcher kernelVersionMatcher = kernelVersionPattern.matcher(result.getStdout());
+ kernelVersionMatcher.find();
+ int majorKernelVersion;
+ int minorKernelVersion;
+ try {
+ majorKernelVersion = Integer.parseInt(kernelVersionMatcher.group(1));
+ minorKernelVersion = Integer.parseInt(kernelVersionMatcher.group(2));
+ } catch (Exception e) {
+ return false;
+ }
+ if (majorKernelVersion < 4) {
+ return true;
+ }
+ if (majorKernelVersion > 4) {
+ return false;
+ }
+ if (minorKernelVersion > 6) {
+ return false;
+ }
+ return true;
+ }
+
+ @After
+ public void tearDown() throws DeviceNotAvailableException {
+ if (getDevice().executeAdbCommand("enable-verity").contains("Now reboot your device")) {
+ getDevice().reboot();
+ }
+ if (!wasRoot) {
+ getDevice().disableAdbRoot();
+ }
+ }
+}
+
diff --git a/fs_mgr/tests/vendor-overlay-test.xml b/fs_mgr/tests/vendor-overlay-test.xml
new file mode 100644
index 0000000..0b5c8cc
--- /dev/null
+++ b/fs_mgr/tests/vendor-overlay-test.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<configuration description="Config for vendor overlay test cases">
+ <test class="com.android.tradefed.testtype.HostTest" >
+ <option name="jar" value="fs_mgr_vendor_overlay_test.jar" />
+ </test>
+</configuration>
+
