Merge "init: init_kill_services_test" am: df78c434

    {

      "name": "fs_mgr_vendor_overlay_test"

    },

    {

      "name": "init_kill_services_test"

    },

    {

      "name": "libbase_test"

    },

cc_test {

    name: "init_kill_services_test",

    srcs: ["init_kill_services_test.cpp"],

    shared_libs: ["libbase"],

    test_suites: ["general-tests"],

    require_root: true,

}

/*

 * 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);