Add reboot_test
This test spawns several services backed by /system/bin/yes executable,
and then stops them either while SIGTERM or SIGKILL.
Ideally we want to unit test more of reboot logic, but that requires a
bigger refactoring.
Test: atest CtsInitTestCases
Bug: 170315126
Bug: 174335499
Change-Id: Ife48b1636c6ca2d0aac73f4eb6f4737343a88e7a
diff --git a/init/Android.bp b/init/Android.bp
index 19ba21b..1efbdc0 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -261,6 +261,7 @@
"persistent_properties_test.cpp",
"property_service_test.cpp",
"property_type_test.cpp",
+ "reboot_test.cpp",
"rlimit_parser_test.cpp",
"service_test.cpp",
"subcontext_test.cpp",
diff --git a/init/reboot.cpp b/init/reboot.cpp
index 409f8cb..90b565c 100644
--- a/init/reboot.cpp
+++ b/init/reboot.cpp
@@ -533,8 +533,8 @@
// Like StopServices, but also logs all the services that failed to stop after the provided timeout.
// Returns number of violators.
-static int StopServicesAndLogViolations(const std::set<std::string>& services,
- std::chrono::milliseconds timeout, bool terminate) {
+int StopServicesAndLogViolations(const std::set<std::string>& services,
+ std::chrono::milliseconds timeout, bool terminate) {
StopServices(services, timeout, terminate);
int still_running = 0;
for (const auto& s : ServiceList::GetInstance()) {
diff --git a/init/reboot.h b/init/reboot.h
index 81c3edc..551a114 100644
--- a/init/reboot.h
+++ b/init/reboot.h
@@ -17,11 +17,17 @@
#ifndef _INIT_REBOOT_H
#define _INIT_REBOOT_H
+#include <chrono>
+#include <set>
#include <string>
namespace android {
namespace init {
+// Like StopServices, but also logs all the services that failed to stop after the provided timeout.
+// Returns number of violators.
+int StopServicesAndLogViolations(const std::set<std::string>& services,
+ std::chrono::milliseconds timeout, bool terminate);
// Parses and handles a setprop sys.powerctl message.
void HandlePowerctlMessage(const std::string& command);
diff --git a/init/reboot_test.cpp b/init/reboot_test.cpp
new file mode 100644
index 0000000..06702e3
--- /dev/null
+++ b/init/reboot_test.cpp
@@ -0,0 +1,186 @@
+/*
+ * 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 "reboot.h"
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <memory>
+#include <string_view>
+
+#include <android-base/file.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <gtest/gtest.h>
+#include <selinux/selinux.h>
+
+#include "builtin_arguments.h"
+#include "builtins.h"
+#include "parser.h"
+#include "service_list.h"
+#include "service_parser.h"
+#include "subcontext.h"
+#include "util.h"
+
+using namespace std::literals;
+
+using android::base::GetProperty;
+using android::base::Join;
+using android::base::SetProperty;
+using android::base::Split;
+using android::base::StringReplace;
+using android::base::WaitForProperty;
+using android::base::WriteStringToFd;
+
+namespace android {
+namespace init {
+
+class RebootTest : public ::testing::Test {
+ public:
+ RebootTest() {
+ std::vector<std::string> names = GetServiceNames();
+ if (!names.empty()) {
+ ADD_FAILURE() << "Expected empty ServiceList but found: [" << Join(names, ',') << "]";
+ }
+ }
+
+ ~RebootTest() {
+ std::vector<std::string> names = GetServiceNames();
+ for (const auto& name : names) {
+ auto s = ServiceList::GetInstance().FindService(name);
+ auto pid = s->pid();
+ ServiceList::GetInstance().RemoveService(*s);
+ if (pid > 0) {
+ kill(pid, SIGTERM);
+ kill(pid, SIGKILL);
+ }
+ }
+ }
+
+ private:
+ std::vector<std::string> GetServiceNames() const {
+ std::vector<std::string> names;
+ for (const auto& s : ServiceList::GetInstance()) {
+ names.push_back(s->name());
+ }
+ return names;
+ }
+};
+
+std::string GetSecurityContext() {
+ char* ctx;
+ if (getcon(&ctx) == -1) {
+ ADD_FAILURE() << "Failed to call getcon : " << strerror(errno);
+ }
+ std::string result = std::string(ctx);
+ freecon(ctx);
+ return result;
+}
+
+void AddTestService(const std::string& name) {
+ static constexpr std::string_view kScriptTemplate = R"init(
+service $name /system/bin/yes
+ user shell
+ group shell
+ seclabel $selabel
+)init";
+
+ std::string script = StringReplace(StringReplace(kScriptTemplate, "$name", name, false),
+ "$selabel", GetSecurityContext(), false);
+ ServiceList& service_list = ServiceList::GetInstance();
+ Parser parser;
+ parser.AddSectionParser("service",
+ std::make_unique<ServiceParser>(&service_list, nullptr, std::nullopt));
+
+ TemporaryFile tf;
+ ASSERT_TRUE(tf.fd != -1);
+ ASSERT_TRUE(WriteStringToFd(script, tf.fd));
+ ASSERT_TRUE(parser.ParseConfig(tf.path));
+}
+
+TEST_F(RebootTest, StopServicesSIGTERM) {
+ AddTestService("A");
+ AddTestService("B");
+
+ auto service_a = ServiceList::GetInstance().FindService("A");
+ ASSERT_NE(nullptr, service_a);
+ auto service_b = ServiceList::GetInstance().FindService("B");
+ ASSERT_NE(nullptr, service_b);
+
+ ASSERT_RESULT_OK(service_a->Start());
+ ASSERT_TRUE(service_a->IsRunning());
+ ASSERT_RESULT_OK(service_b->Start());
+ ASSERT_TRUE(service_b->IsRunning());
+
+ std::unique_ptr<Service> oneshot_service;
+ {
+ auto result = Service::MakeTemporaryOneshotService(
+ {"exec", GetSecurityContext(), "--", "/system/bin/yes"});
+ ASSERT_RESULT_OK(result);
+ oneshot_service = std::move(*result);
+ }
+ std::string oneshot_service_name = oneshot_service->name();
+ oneshot_service->Start();
+ ASSERT_TRUE(oneshot_service->IsRunning());
+ ServiceList::GetInstance().AddService(std::move(oneshot_service));
+
+ EXPECT_EQ(0, StopServicesAndLogViolations({"A", "B", oneshot_service_name}, 10s,
+ /* terminate= */ true));
+ EXPECT_FALSE(service_a->IsRunning());
+ EXPECT_FALSE(service_b->IsRunning());
+ // Oneshot services are deleted from the ServiceList after they are destroyed.
+ auto oneshot_service_after_stop = ServiceList::GetInstance().FindService(oneshot_service_name);
+ EXPECT_EQ(nullptr, oneshot_service_after_stop);
+}
+
+TEST_F(RebootTest, StopServicesSIGKILL) {
+ AddTestService("A");
+ AddTestService("B");
+
+ auto service_a = ServiceList::GetInstance().FindService("A");
+ ASSERT_NE(nullptr, service_a);
+ auto service_b = ServiceList::GetInstance().FindService("B");
+ ASSERT_NE(nullptr, service_b);
+
+ ASSERT_RESULT_OK(service_a->Start());
+ ASSERT_TRUE(service_a->IsRunning());
+ ASSERT_RESULT_OK(service_b->Start());
+ ASSERT_TRUE(service_b->IsRunning());
+
+ std::unique_ptr<Service> oneshot_service;
+ {
+ auto result = Service::MakeTemporaryOneshotService(
+ {"exec", GetSecurityContext(), "--", "/system/bin/yes"});
+ ASSERT_RESULT_OK(result);
+ oneshot_service = std::move(*result);
+ }
+ std::string oneshot_service_name = oneshot_service->name();
+ oneshot_service->Start();
+ ASSERT_TRUE(oneshot_service->IsRunning());
+ ServiceList::GetInstance().AddService(std::move(oneshot_service));
+
+ EXPECT_EQ(0, StopServicesAndLogViolations({"A", "B", oneshot_service_name}, 10s,
+ /* terminate= */ false));
+ EXPECT_FALSE(service_a->IsRunning());
+ EXPECT_FALSE(service_b->IsRunning());
+ // Oneshot services are deleted from the ServiceList after they are destroyed.
+ auto oneshot_service_after_stop = ServiceList::GetInstance().FindService(oneshot_service_name);
+ EXPECT_EQ(nullptr, oneshot_service_after_stop);
+}
+
+} // namespace init
+} // namespace android
diff --git a/init/subcontext.cpp b/init/subcontext.cpp
index f1fbffe..fa48bea 100644
--- a/init/subcontext.cpp
+++ b/init/subcontext.cpp
@@ -351,6 +351,9 @@
}
bool SubcontextChildReap(pid_t pid) {
+ if (!subcontext) {
+ return false;
+ }
if (subcontext->pid() == pid) {
if (!subcontext_terminated_by_shutdown) {
subcontext->Restart();