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Commit 6cce3f7f authored by Steven Moreland's avatar Steven Moreland
Browse files

init: init_kill_services_test 

Kill processes and make sure the phone recovers. This adds a basic level
of testing, but it could be improved by:
- trying to kill all running processes on the device
- improving metrics for 'recovery'

Bug: 148236233
Test: init_kill_services_test
Change-Id: I8aaca7bf4bb0be588decf741d1f6e1c5787cea84
parent 262b58cd

TEST_MAPPING

+3 −0
Original line number Diff line number Diff line
@@ -27,6 +27,9 @@ 
    {

      "name": "fs_mgr_vendor_overlay_test"

    },

    {

      "name": "init_kill_services_test"

    },

    {

      "name": "libbase_test"

    },

init/test_kill_services/Android.bp

0 → 100644
+7 −0
Original line number Diff line number Diff line 
cc_test {

    name: "init_kill_services_test",

    srcs: ["init_kill_services_test.cpp"],

    shared_libs: ["libbase"],

    test_suites: ["general-tests"],

    require_root: true,

}

init/test_kill_services/init_kill_services_test.cpp

0 → 100644
+69 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2020 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.

 */



#include <gtest/gtest.h>



#include <android-base/properties.h>



#include <iostream>



using ::android::base::GetProperty;

using ::android::base::SetProperty;



void ExpectKillingServiceRecovers(const std::string& service_name) {

    const std::string status_prop = "init.svc." + service_name;

    const std::string pid_prop = "init.svc_debug_pid." + service_name;



    const std::string initial_pid = GetProperty(pid_prop, "");



    EXPECT_EQ("running", GetProperty(status_prop, "")) << status_prop;

    EXPECT_NE("", initial_pid) << pid_prop;



    EXPECT_EQ(0, system(("kill -9 " + initial_pid).c_str()));



    constexpr size_t kMaxWaitMilliseconds = 10000;

    constexpr size_t kRetryWaitMilliseconds = 100;



    constexpr size_t kRetryTimes = kMaxWaitMilliseconds / kRetryWaitMilliseconds;



    for (size_t retry = 0; retry < kRetryTimes; retry++) {

        const std::string& pid = GetProperty(pid_prop, "");

        if (pid != initial_pid && pid != "") break;

        usleep(kRetryWaitMilliseconds * 1000);

    }



    // svc_debug_pid is set after svc property

    EXPECT_EQ("running", GetProperty(status_prop, ""));

}



class InitKillServicesTest : public ::testing::TestWithParam<std::string> {};



TEST_P(InitKillServicesTest, KillCriticalProcesses) {

    ExpectKillingServiceRecovers(GetParam());



    // sanity check init is still responding

    EXPECT_TRUE(SetProperty("test.death.test", "asdf"));

    EXPECT_EQ(GetProperty("test.death.test", ""), "asdf");

    EXPECT_TRUE(SetProperty("test.death.test", ""));

}



static inline std::string PrintName(const testing::TestParamInfo<std::string>& info) {

    return info.param;

}



INSTANTIATE_TEST_CASE_P(DeathTest, InitKillServicesTest,

                        ::testing::Values("lmkd", "ueventd", "hwservicemanager", "servicemanager"),

                        PrintName);