| /* |
| * Copyright (C) 2005 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. |
| */ |
| |
| #define LOG_TAG "ServiceManagerCppClient" |
| |
| #include <binder/IServiceManager.h> |
| |
| #include <inttypes.h> |
| #include <unistd.h> |
| |
| #include <android-base/properties.h> |
| #include <android/os/BnServiceCallback.h> |
| #include <android/os/IServiceManager.h> |
| #include <binder/IPCThreadState.h> |
| #include <binder/Parcel.h> |
| #include <utils/Log.h> |
| #include <utils/String8.h> |
| #include <utils/SystemClock.h> |
| |
| #ifndef __ANDROID_VNDK__ |
| #include <binder/IPermissionController.h> |
| #endif |
| |
| #ifdef __ANDROID__ |
| #include <cutils/properties.h> |
| #else |
| #include "ServiceManagerHost.h" |
| #endif |
| |
| #include "Static.h" |
| |
| namespace android { |
| |
| using AidlRegistrationCallback = IServiceManager::LocalRegistrationCallback; |
| |
| using AidlServiceManager = android::os::IServiceManager; |
| using android::binder::Status; |
| |
| // libbinder's IServiceManager.h can't rely on the values generated by AIDL |
| // because many places use its headers via include_dirs (meaning, without |
| // declaring the dependency in the build system). So, for now, we can just check |
| // the values here. |
| static_assert(AidlServiceManager::DUMP_FLAG_PRIORITY_CRITICAL == IServiceManager::DUMP_FLAG_PRIORITY_CRITICAL); |
| static_assert(AidlServiceManager::DUMP_FLAG_PRIORITY_HIGH == IServiceManager::DUMP_FLAG_PRIORITY_HIGH); |
| static_assert(AidlServiceManager::DUMP_FLAG_PRIORITY_NORMAL == IServiceManager::DUMP_FLAG_PRIORITY_NORMAL); |
| static_assert(AidlServiceManager::DUMP_FLAG_PRIORITY_DEFAULT == IServiceManager::DUMP_FLAG_PRIORITY_DEFAULT); |
| static_assert(AidlServiceManager::DUMP_FLAG_PRIORITY_ALL == IServiceManager::DUMP_FLAG_PRIORITY_ALL); |
| static_assert(AidlServiceManager::DUMP_FLAG_PROTO == IServiceManager::DUMP_FLAG_PROTO); |
| |
| const String16& IServiceManager::getInterfaceDescriptor() const { |
| return AidlServiceManager::descriptor; |
| } |
| IServiceManager::IServiceManager() {} |
| IServiceManager::~IServiceManager() {} |
| |
| // From the old libbinder IServiceManager interface to IServiceManager. |
| class ServiceManagerShim : public IServiceManager |
| { |
| public: |
| explicit ServiceManagerShim (const sp<AidlServiceManager>& impl); |
| |
| sp<IBinder> getService(const String16& name) const override; |
| sp<IBinder> checkService(const String16& name) const override; |
| status_t addService(const String16& name, const sp<IBinder>& service, |
| bool allowIsolated, int dumpsysPriority) override; |
| Vector<String16> listServices(int dumpsysPriority) override; |
| sp<IBinder> waitForService(const String16& name16) override; |
| bool isDeclared(const String16& name) override; |
| Vector<String16> getDeclaredInstances(const String16& interface) override; |
| std::optional<String16> updatableViaApex(const String16& name) override; |
| Vector<String16> getUpdatableNames(const String16& apexName) override; |
| std::optional<IServiceManager::ConnectionInfo> getConnectionInfo(const String16& name) override; |
| class RegistrationWaiter : public android::os::BnServiceCallback { |
| public: |
| explicit RegistrationWaiter(const sp<AidlRegistrationCallback>& callback) |
| : mImpl(callback) {} |
| Status onRegistration(const std::string& name, const sp<IBinder>& binder) override { |
| mImpl->onServiceRegistration(String16(name.c_str()), binder); |
| return Status::ok(); |
| } |
| |
| private: |
| sp<AidlRegistrationCallback> mImpl; |
| }; |
| |
| status_t registerForNotifications(const String16& service, |
| const sp<AidlRegistrationCallback>& cb) override; |
| |
| status_t unregisterForNotifications(const String16& service, |
| const sp<AidlRegistrationCallback>& cb) override; |
| |
| std::vector<IServiceManager::ServiceDebugInfo> getServiceDebugInfo() override; |
| // for legacy ABI |
| const String16& getInterfaceDescriptor() const override { |
| return mTheRealServiceManager->getInterfaceDescriptor(); |
| } |
| IBinder* onAsBinder() override { |
| return IInterface::asBinder(mTheRealServiceManager).get(); |
| } |
| |
| protected: |
| sp<AidlServiceManager> mTheRealServiceManager; |
| // AidlRegistrationCallback -> services that its been registered for |
| // notifications. |
| using LocalRegistrationAndWaiter = |
| std::pair<sp<LocalRegistrationCallback>, sp<RegistrationWaiter>>; |
| using ServiceCallbackMap = std::map<std::string, std::vector<LocalRegistrationAndWaiter>>; |
| ServiceCallbackMap mNameToRegistrationCallback; |
| std::mutex mNameToRegistrationLock; |
| |
| void removeRegistrationCallbackLocked(const sp<AidlRegistrationCallback>& cb, |
| ServiceCallbackMap::iterator* it, |
| sp<RegistrationWaiter>* waiter); |
| |
| // Directly get the service in a way that, for lazy services, requests the service to be started |
| // if it is not currently started. This way, calls directly to ServiceManagerShim::getService |
| // will still have the 5s delay that is expected by a large amount of Android code. |
| // |
| // When implementing ServiceManagerShim, use realGetService instead of |
| // mTheRealServiceManager->getService so that it can be overridden in ServiceManagerHostShim. |
| virtual Status realGetService(const std::string& name, sp<IBinder>* _aidl_return) { |
| return mTheRealServiceManager->getService(name, _aidl_return); |
| } |
| }; |
| |
| [[clang::no_destroy]] static std::once_flag gSmOnce; |
| [[clang::no_destroy]] static sp<IServiceManager> gDefaultServiceManager; |
| |
| sp<IServiceManager> defaultServiceManager() |
| { |
| std::call_once(gSmOnce, []() { |
| #if defined(__BIONIC__) && !defined(__ANDROID_VNDK__) |
| /* wait for service manager */ { |
| using std::literals::chrono_literals::operator""s; |
| using android::base::WaitForProperty; |
| while (!WaitForProperty("servicemanager.ready", "true", 1s)) { |
| ALOGE("Waited for servicemanager.ready for a second, waiting another..."); |
| } |
| } |
| #endif |
| |
| sp<AidlServiceManager> sm = nullptr; |
| while (sm == nullptr) { |
| sm = interface_cast<AidlServiceManager>(ProcessState::self()->getContextObject(nullptr)); |
| if (sm == nullptr) { |
| ALOGE("Waiting 1s on context object on %s.", ProcessState::self()->getDriverName().c_str()); |
| sleep(1); |
| } |
| } |
| |
| gDefaultServiceManager = sp<ServiceManagerShim>::make(sm); |
| }); |
| |
| return gDefaultServiceManager; |
| } |
| |
| void setDefaultServiceManager(const sp<IServiceManager>& sm) { |
| bool called = false; |
| std::call_once(gSmOnce, [&]() { |
| gDefaultServiceManager = sm; |
| called = true; |
| }); |
| |
| if (!called) { |
| LOG_ALWAYS_FATAL("setDefaultServiceManager() called after defaultServiceManager()."); |
| } |
| } |
| |
| #if !defined(__ANDROID_VNDK__) |
| // IPermissionController is not accessible to vendors |
| |
| bool checkCallingPermission(const String16& permission) |
| { |
| return checkCallingPermission(permission, nullptr, nullptr); |
| } |
| |
| static StaticString16 _permission(u"permission"); |
| |
| bool checkCallingPermission(const String16& permission, int32_t* outPid, int32_t* outUid) |
| { |
| IPCThreadState* ipcState = IPCThreadState::self(); |
| pid_t pid = ipcState->getCallingPid(); |
| uid_t uid = ipcState->getCallingUid(); |
| if (outPid) *outPid = pid; |
| if (outUid) *outUid = uid; |
| return checkPermission(permission, pid, uid); |
| } |
| |
| bool checkPermission(const String16& permission, pid_t pid, uid_t uid, bool logPermissionFailure) { |
| static Mutex gPermissionControllerLock; |
| static sp<IPermissionController> gPermissionController; |
| |
| sp<IPermissionController> pc; |
| gPermissionControllerLock.lock(); |
| pc = gPermissionController; |
| gPermissionControllerLock.unlock(); |
| |
| int64_t startTime = 0; |
| |
| while (true) { |
| if (pc != nullptr) { |
| bool res = pc->checkPermission(permission, pid, uid); |
| if (res) { |
| if (startTime != 0) { |
| ALOGI("Check passed after %d seconds for %s from uid=%d pid=%d", |
| (int)((uptimeMillis()-startTime)/1000), |
| String8(permission).string(), uid, pid); |
| } |
| return res; |
| } |
| |
| // Is this a permission failure, or did the controller go away? |
| if (IInterface::asBinder(pc)->isBinderAlive()) { |
| if (logPermissionFailure) { |
| ALOGW("Permission failure: %s from uid=%d pid=%d", String8(permission).string(), |
| uid, pid); |
| } |
| return false; |
| } |
| |
| // Object is dead! |
| gPermissionControllerLock.lock(); |
| if (gPermissionController == pc) { |
| gPermissionController = nullptr; |
| } |
| gPermissionControllerLock.unlock(); |
| } |
| |
| // Need to retrieve the permission controller. |
| sp<IBinder> binder = defaultServiceManager()->checkService(_permission); |
| if (binder == nullptr) { |
| // Wait for the permission controller to come back... |
| if (startTime == 0) { |
| startTime = uptimeMillis(); |
| ALOGI("Waiting to check permission %s from uid=%d pid=%d", |
| String8(permission).string(), uid, pid); |
| } |
| sleep(1); |
| } else { |
| pc = interface_cast<IPermissionController>(binder); |
| // Install the new permission controller, and try again. |
| gPermissionControllerLock.lock(); |
| gPermissionController = pc; |
| gPermissionControllerLock.unlock(); |
| } |
| } |
| } |
| |
| #endif //__ANDROID_VNDK__ |
| |
| // ---------------------------------------------------------------------- |
| |
| ServiceManagerShim::ServiceManagerShim(const sp<AidlServiceManager>& impl) |
| : mTheRealServiceManager(impl) |
| {} |
| |
| // This implementation could be simplified and made more efficient by delegating |
| // to waitForService. However, this changes the threading structure in some |
| // cases and could potentially break prebuilts. Once we have higher logistical |
| // complexity, this could be attempted. |
| sp<IBinder> ServiceManagerShim::getService(const String16& name) const |
| { |
| static bool gSystemBootCompleted = false; |
| |
| sp<IBinder> svc = checkService(name); |
| if (svc != nullptr) return svc; |
| |
| const bool isVendorService = |
| strcmp(ProcessState::self()->getDriverName().c_str(), "/dev/vndbinder") == 0; |
| constexpr int64_t timeout = 5000; |
| int64_t startTime = uptimeMillis(); |
| // Vendor code can't access system properties |
| if (!gSystemBootCompleted && !isVendorService) { |
| #ifdef __ANDROID__ |
| char bootCompleted[PROPERTY_VALUE_MAX]; |
| property_get("sys.boot_completed", bootCompleted, "0"); |
| gSystemBootCompleted = strcmp(bootCompleted, "1") == 0 ? true : false; |
| #else |
| gSystemBootCompleted = true; |
| #endif |
| } |
| // retry interval in millisecond; note that vendor services stay at 100ms |
| const useconds_t sleepTime = gSystemBootCompleted ? 1000 : 100; |
| |
| ALOGI("Waiting for service '%s' on '%s'...", String8(name).string(), |
| ProcessState::self()->getDriverName().c_str()); |
| |
| int n = 0; |
| while (uptimeMillis() - startTime < timeout) { |
| n++; |
| usleep(1000*sleepTime); |
| |
| sp<IBinder> svc = checkService(name); |
| if (svc != nullptr) { |
| ALOGI("Waiting for service '%s' on '%s' successful after waiting %" PRIi64 "ms", |
| String8(name).string(), ProcessState::self()->getDriverName().c_str(), |
| uptimeMillis() - startTime); |
| return svc; |
| } |
| } |
| ALOGW("Service %s didn't start. Returning NULL", String8(name).string()); |
| return nullptr; |
| } |
| |
| sp<IBinder> ServiceManagerShim::checkService(const String16& name) const |
| { |
| sp<IBinder> ret; |
| if (!mTheRealServiceManager->checkService(String8(name).c_str(), &ret).isOk()) { |
| return nullptr; |
| } |
| return ret; |
| } |
| |
| status_t ServiceManagerShim::addService(const String16& name, const sp<IBinder>& service, |
| bool allowIsolated, int dumpsysPriority) |
| { |
| Status status = mTheRealServiceManager->addService( |
| String8(name).c_str(), service, allowIsolated, dumpsysPriority); |
| return status.exceptionCode(); |
| } |
| |
| Vector<String16> ServiceManagerShim::listServices(int dumpsysPriority) |
| { |
| std::vector<std::string> ret; |
| if (!mTheRealServiceManager->listServices(dumpsysPriority, &ret).isOk()) { |
| return {}; |
| } |
| |
| Vector<String16> res; |
| res.setCapacity(ret.size()); |
| for (const std::string& name : ret) { |
| res.push(String16(name.c_str())); |
| } |
| return res; |
| } |
| |
| sp<IBinder> ServiceManagerShim::waitForService(const String16& name16) |
| { |
| class Waiter : public android::os::BnServiceCallback { |
| Status onRegistration(const std::string& /*name*/, |
| const sp<IBinder>& binder) override { |
| std::unique_lock<std::mutex> lock(mMutex); |
| mBinder = binder; |
| lock.unlock(); |
| // Flushing here helps ensure the service's ref count remains accurate |
| IPCThreadState::self()->flushCommands(); |
| mCv.notify_one(); |
| return Status::ok(); |
| } |
| public: |
| sp<IBinder> mBinder; |
| std::mutex mMutex; |
| std::condition_variable mCv; |
| }; |
| |
| // Simple RAII object to ensure a function call immediately before going out of scope |
| class Defer { |
| public: |
| explicit Defer(std::function<void()>&& f) : mF(std::move(f)) {} |
| ~Defer() { mF(); } |
| private: |
| std::function<void()> mF; |
| }; |
| |
| const std::string name = String8(name16).c_str(); |
| |
| sp<IBinder> out; |
| if (Status status = realGetService(name, &out); !status.isOk()) { |
| ALOGW("Failed to getService in waitForService for %s: %s", name.c_str(), |
| status.toString8().c_str()); |
| if (0 == ProcessState::self()->getThreadPoolMaxTotalThreadCount()) { |
| ALOGW("Got service, but may be racey because we could not wait efficiently for it. " |
| "Threadpool has 0 guaranteed threads. " |
| "Is the threadpool configured properly? " |
| "See ProcessState::startThreadPool and " |
| "ProcessState::setThreadPoolMaxThreadCount."); |
| } |
| return nullptr; |
| } |
| if (out != nullptr) return out; |
| |
| sp<Waiter> waiter = sp<Waiter>::make(); |
| if (Status status = mTheRealServiceManager->registerForNotifications(name, waiter); |
| !status.isOk()) { |
| ALOGW("Failed to registerForNotifications in waitForService for %s: %s", name.c_str(), |
| status.toString8().c_str()); |
| return nullptr; |
| } |
| Defer unregister ([&] { |
| mTheRealServiceManager->unregisterForNotifications(name, waiter); |
| }); |
| |
| while(true) { |
| { |
| // It would be really nice if we could read binder commands on this |
| // thread instead of needing a threadpool to be started, but for |
| // instance, if we call getAndExecuteCommand, it might be the case |
| // that another thread serves the callback, and we never get a |
| // command, so we hang indefinitely. |
| std::unique_lock<std::mutex> lock(waiter->mMutex); |
| using std::literals::chrono_literals::operator""s; |
| waiter->mCv.wait_for(lock, 1s, [&] { |
| return waiter->mBinder != nullptr; |
| }); |
| if (waiter->mBinder != nullptr) return waiter->mBinder; |
| } |
| |
| ALOGW("Waited one second for %s (is service started? Number of threads started in the " |
| "threadpool: %zu. Are binder threads started and available?)", |
| name.c_str(), ProcessState::self()->getThreadPoolMaxTotalThreadCount()); |
| |
| // Handle race condition for lazy services. Here is what can happen: |
| // - the service dies (not processed by init yet). |
| // - sm processes death notification. |
| // - sm gets getService and calls init to start service. |
| // - init gets the start signal, but the service already appears |
| // started, so it does nothing. |
| // - init gets death signal, but doesn't know it needs to restart |
| // the service |
| // - we need to request service again to get it to start |
| if (Status status = realGetService(name, &out); !status.isOk()) { |
| ALOGW("Failed to getService in waitForService on later try for %s: %s", name.c_str(), |
| status.toString8().c_str()); |
| return nullptr; |
| } |
| if (out != nullptr) return out; |
| } |
| } |
| |
| bool ServiceManagerShim::isDeclared(const String16& name) { |
| bool declared; |
| if (Status status = mTheRealServiceManager->isDeclared(String8(name).c_str(), &declared); |
| !status.isOk()) { |
| ALOGW("Failed to get isDeclared for %s: %s", String8(name).c_str(), |
| status.toString8().c_str()); |
| return false; |
| } |
| return declared; |
| } |
| |
| Vector<String16> ServiceManagerShim::getDeclaredInstances(const String16& interface) { |
| std::vector<std::string> out; |
| if (Status status = |
| mTheRealServiceManager->getDeclaredInstances(String8(interface).c_str(), &out); |
| !status.isOk()) { |
| ALOGW("Failed to getDeclaredInstances for %s: %s", String8(interface).c_str(), |
| status.toString8().c_str()); |
| return {}; |
| } |
| |
| Vector<String16> res; |
| res.setCapacity(out.size()); |
| for (const std::string& instance : out) { |
| res.push(String16(instance.c_str())); |
| } |
| return res; |
| } |
| |
| std::optional<String16> ServiceManagerShim::updatableViaApex(const String16& name) { |
| std::optional<std::string> declared; |
| if (Status status = mTheRealServiceManager->updatableViaApex(String8(name).c_str(), &declared); |
| !status.isOk()) { |
| ALOGW("Failed to get updatableViaApex for %s: %s", String8(name).c_str(), |
| status.toString8().c_str()); |
| return std::nullopt; |
| } |
| return declared ? std::optional<String16>(String16(declared.value().c_str())) : std::nullopt; |
| } |
| |
| Vector<String16> ServiceManagerShim::getUpdatableNames(const String16& apexName) { |
| std::vector<std::string> out; |
| if (Status status = mTheRealServiceManager->getUpdatableNames(String8(apexName).c_str(), &out); |
| !status.isOk()) { |
| ALOGW("Failed to getUpdatableNames for %s: %s", String8(apexName).c_str(), |
| status.toString8().c_str()); |
| return {}; |
| } |
| |
| Vector<String16> res; |
| res.setCapacity(out.size()); |
| for (const std::string& instance : out) { |
| res.push(String16(instance.c_str())); |
| } |
| return res; |
| } |
| |
| std::optional<IServiceManager::ConnectionInfo> ServiceManagerShim::getConnectionInfo( |
| const String16& name) { |
| std::optional<os::ConnectionInfo> connectionInfo; |
| if (Status status = |
| mTheRealServiceManager->getConnectionInfo(String8(name).c_str(), &connectionInfo); |
| !status.isOk()) { |
| ALOGW("Failed to get ConnectionInfo for %s: %s", String8(name).c_str(), |
| status.toString8().c_str()); |
| } |
| return connectionInfo.has_value() |
| ? std::make_optional<IServiceManager::ConnectionInfo>( |
| {connectionInfo->ipAddress, static_cast<unsigned int>(connectionInfo->port)}) |
| : std::nullopt; |
| } |
| |
| status_t ServiceManagerShim::registerForNotifications(const String16& name, |
| const sp<AidlRegistrationCallback>& cb) { |
| if (cb == nullptr) { |
| ALOGE("%s: null cb passed", __FUNCTION__); |
| return BAD_VALUE; |
| } |
| std::string nameStr = String8(name).c_str(); |
| sp<RegistrationWaiter> registrationWaiter = sp<RegistrationWaiter>::make(cb); |
| std::lock_guard<std::mutex> lock(mNameToRegistrationLock); |
| if (Status status = |
| mTheRealServiceManager->registerForNotifications(nameStr, registrationWaiter); |
| !status.isOk()) { |
| ALOGW("Failed to registerForNotifications for %s: %s", nameStr.c_str(), |
| status.toString8().c_str()); |
| return UNKNOWN_ERROR; |
| } |
| mNameToRegistrationCallback[nameStr].push_back(std::make_pair(cb, registrationWaiter)); |
| return OK; |
| } |
| |
| void ServiceManagerShim::removeRegistrationCallbackLocked(const sp<AidlRegistrationCallback>& cb, |
| ServiceCallbackMap::iterator* it, |
| sp<RegistrationWaiter>* waiter) { |
| std::vector<LocalRegistrationAndWaiter>& localRegistrationAndWaiters = (*it)->second; |
| for (auto lit = localRegistrationAndWaiters.begin(); |
| lit != localRegistrationAndWaiters.end();) { |
| if (lit->first == cb) { |
| if (waiter) { |
| *waiter = lit->second; |
| } |
| lit = localRegistrationAndWaiters.erase(lit); |
| } else { |
| ++lit; |
| } |
| } |
| |
| if (localRegistrationAndWaiters.empty()) { |
| mNameToRegistrationCallback.erase(*it); |
| } |
| } |
| |
| status_t ServiceManagerShim::unregisterForNotifications(const String16& name, |
| const sp<AidlRegistrationCallback>& cb) { |
| if (cb == nullptr) { |
| ALOGE("%s: null cb passed", __FUNCTION__); |
| return BAD_VALUE; |
| } |
| std::string nameStr = String8(name).c_str(); |
| std::lock_guard<std::mutex> lock(mNameToRegistrationLock); |
| auto it = mNameToRegistrationCallback.find(nameStr); |
| sp<RegistrationWaiter> registrationWaiter; |
| if (it != mNameToRegistrationCallback.end()) { |
| removeRegistrationCallbackLocked(cb, &it, ®istrationWaiter); |
| } else { |
| ALOGE("%s no callback registered for notifications on %s", __FUNCTION__, nameStr.c_str()); |
| return BAD_VALUE; |
| } |
| if (registrationWaiter == nullptr) { |
| ALOGE("%s Callback passed wasn't used to register for notifications", __FUNCTION__); |
| return BAD_VALUE; |
| } |
| if (Status status = mTheRealServiceManager->unregisterForNotifications(String8(name).c_str(), |
| registrationWaiter); |
| !status.isOk()) { |
| ALOGW("Failed to get service manager to unregisterForNotifications for %s: %s", |
| String8(name).c_str(), status.toString8().c_str()); |
| return UNKNOWN_ERROR; |
| } |
| return OK; |
| } |
| |
| std::vector<IServiceManager::ServiceDebugInfo> ServiceManagerShim::getServiceDebugInfo() { |
| std::vector<os::ServiceDebugInfo> serviceDebugInfos; |
| std::vector<IServiceManager::ServiceDebugInfo> ret; |
| if (Status status = mTheRealServiceManager->getServiceDebugInfo(&serviceDebugInfos); |
| !status.isOk()) { |
| ALOGW("%s Failed to get ServiceDebugInfo", __FUNCTION__); |
| return ret; |
| } |
| for (const auto& serviceDebugInfo : serviceDebugInfos) { |
| IServiceManager::ServiceDebugInfo retInfo; |
| retInfo.pid = serviceDebugInfo.debugPid; |
| retInfo.name = serviceDebugInfo.name; |
| ret.emplace_back(retInfo); |
| } |
| return ret; |
| } |
| |
| #ifndef __ANDROID__ |
| // ServiceManagerShim for host. Implements the old libbinder android::IServiceManager API. |
| // The internal implementation of the AIDL interface android::os::IServiceManager calls into |
| // on-device service manager. |
| class ServiceManagerHostShim : public ServiceManagerShim { |
| public: |
| ServiceManagerHostShim(const sp<AidlServiceManager>& impl, |
| const RpcDelegateServiceManagerOptions& options) |
| : ServiceManagerShim(impl), mOptions(options) {} |
| // ServiceManagerShim::getService is based on checkService, so no need to override it. |
| sp<IBinder> checkService(const String16& name) const override { |
| return getDeviceService({String8(name).c_str()}, mOptions); |
| } |
| |
| protected: |
| // Override realGetService for ServiceManagerShim::waitForService. |
| Status realGetService(const std::string& name, sp<IBinder>* _aidl_return) { |
| *_aidl_return = getDeviceService({"-g", name}, mOptions); |
| return Status::ok(); |
| } |
| |
| private: |
| RpcDelegateServiceManagerOptions mOptions; |
| }; |
| sp<IServiceManager> createRpcDelegateServiceManager( |
| const RpcDelegateServiceManagerOptions& options) { |
| auto binder = getDeviceService({"manager"}, options); |
| if (binder == nullptr) { |
| ALOGE("getDeviceService(\"manager\") returns null"); |
| return nullptr; |
| } |
| auto interface = AidlServiceManager::asInterface(binder); |
| if (interface == nullptr) { |
| ALOGE("getDeviceService(\"manager\") returns non service manager"); |
| return nullptr; |
| } |
| return sp<ServiceManagerHostShim>::make(interface, options); |
| } |
| #endif |
| |
| } // namespace android |