1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include <android-base/properties.h>
20
21 #include <iostream>
22
23 using ::android::base::GetProperty;
24 using ::android::base::SetProperty;
25
ExpectKillingServiceRecovers(const std::string & service_name)26 void ExpectKillingServiceRecovers(const std::string& service_name) {
27 const std::string status_prop = "init.svc." + service_name;
28 const std::string pid_prop = "init.svc_debug_pid." + service_name;
29
30 const std::string initial_pid = GetProperty(pid_prop, "");
31
32 EXPECT_EQ("running", GetProperty(status_prop, "")) << status_prop;
33 EXPECT_NE("", initial_pid) << pid_prop;
34
35 EXPECT_EQ(0, system(("kill -9 " + initial_pid).c_str()));
36
37 constexpr size_t kMaxWaitMilliseconds = 10000;
38 constexpr size_t kRetryWaitMilliseconds = 100;
39
40 constexpr size_t kRetryTimes = kMaxWaitMilliseconds / kRetryWaitMilliseconds;
41
42 for (size_t retry = 0; retry < kRetryTimes; retry++) {
43 const std::string& pid = GetProperty(pid_prop, "");
44 if (pid != initial_pid && pid != "") break;
45 usleep(kRetryWaitMilliseconds * 1000);
46 }
47
48 // svc_debug_pid is set after svc property
49 EXPECT_EQ("running", GetProperty(status_prop, ""));
50 }
51
52 class InitKillServicesTest : public ::testing::TestWithParam<std::string> {};
53
TEST_P(InitKillServicesTest,KillCriticalProcesses)54 TEST_P(InitKillServicesTest, KillCriticalProcesses) {
55 ExpectKillingServiceRecovers(GetParam());
56
57 // Ensure that init is still responding
58 EXPECT_TRUE(SetProperty("test.death.test", "asdf"));
59 EXPECT_EQ(GetProperty("test.death.test", ""), "asdf");
60 EXPECT_TRUE(SetProperty("test.death.test", ""));
61 }
62
PrintName(const testing::TestParamInfo<std::string> & info)63 static inline std::string PrintName(const testing::TestParamInfo<std::string>& info) {
64 return info.param;
65 }
66
67 INSTANTIATE_TEST_CASE_P(DeathTest, InitKillServicesTest,
68 ::testing::Values("lmkd", "ueventd", "hwservicemanager", "servicemanager"),
69 PrintName);
70