| /* | |
| * Copyright (C) 2019 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 "BinderIncrementalService.h" | |
| #include <android-base/logging.h> | |
| #include <android-base/no_destructor.h> | |
| #include <android/os/IVold.h> | |
| #include <binder/IResultReceiver.h> | |
| #include <binder/PermissionCache.h> | |
| #include <incfs.h> | |
| #include "ServiceWrappers.h" | |
| #include "jni.h" | |
| #include "path.h" | |
| using namespace std::literals; | |
| using namespace android::incremental; | |
| namespace android::os::incremental { | |
| static constexpr auto kAndroidDataEnv = "ANDROID_DATA"sv; | |
| static constexpr auto kDataDir = "/data"sv; | |
| static constexpr auto kIncrementalSubDir = "incremental"sv; | |
| static std::string getIncrementalDir() { | |
| const char* dataDir = getenv(kAndroidDataEnv.data()); | |
| if (!dataDir || !*dataDir) { | |
| dataDir = kDataDir.data(); | |
| } | |
| return path::normalize(path::join(dataDir, kIncrementalSubDir)); | |
| } | |
| static bool incFsEnabled() { | |
| // TODO(b/136132412): use vold to check /sys/fs/incfs/version (per selinux compliance) | |
| return incfs::enabled(); | |
| } | |
| static bool incFsValid(const sp<IVold>& vold) { | |
| bool enabled = false; | |
| auto status = vold->incFsEnabled(&enabled); | |
| if (!status.isOk() || !enabled) { | |
| return false; | |
| } | |
| return true; | |
| } | |
| BinderIncrementalService::BinderIncrementalService(const sp<IServiceManager>& sm, JNIEnv* env) | |
| : mImpl(RealServiceManager(sm, env), getIncrementalDir()) {} | |
| BinderIncrementalService* BinderIncrementalService::start(JNIEnv* env) { | |
| if (!incFsEnabled()) { | |
| return nullptr; | |
| } | |
| IPCThreadState::self()->disableBackgroundScheduling(true); | |
| sp<IServiceManager> sm(defaultServiceManager()); | |
| if (!sm) { | |
| return nullptr; | |
| } | |
| sp<IBinder> voldBinder(sm->getService(String16("vold"))); | |
| if (voldBinder == nullptr) { | |
| return nullptr; | |
| } | |
| sp<IVold> vold = interface_cast<IVold>(voldBinder); | |
| if (!incFsValid(vold)) { | |
| return nullptr; | |
| } | |
| sp<BinderIncrementalService> self(new BinderIncrementalService(sm, env)); | |
| status_t ret = sm->addService(String16{getServiceName()}, self); | |
| if (ret != android::OK) { | |
| return nullptr; | |
| } | |
| sp<ProcessState> ps(ProcessState::self()); | |
| ps->startThreadPool(); | |
| // sm->addService increments the reference count, and now we're OK with returning the pointer. | |
| return self.get(); | |
| } | |
| status_t BinderIncrementalService::dump(int fd, const Vector<String16>&) { | |
| static const android::base::NoDestructor<String16> kDump("android.permission.DUMP"); | |
| if (!PermissionCache::checkCallingPermission(*kDump)) { | |
| return PERMISSION_DENIED; | |
| } | |
| mImpl.onDump(fd); | |
| return NO_ERROR; | |
| } | |
| void BinderIncrementalService::onSystemReady() { | |
| mImpl.onSystemReady(); | |
| } | |
| static binder::Status ok() { | |
| return binder::Status::ok(); | |
| } | |
| binder::Status BinderIncrementalService::openStorage(const std::string& path, | |
| int32_t* _aidl_return) { | |
| *_aidl_return = mImpl.openStorage(path); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::createStorage( | |
| const ::std::string& path, const ::android::content::pm::DataLoaderParamsParcel& params, | |
| int32_t createMode, int32_t* _aidl_return) { | |
| *_aidl_return = | |
| mImpl.createStorage(path, const_cast<content::pm::DataLoaderParamsParcel&&>(params), | |
| android::incremental::IncrementalService::CreateOptions( | |
| createMode)); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::createLinkedStorage(const std::string& path, | |
| int32_t otherStorageId, | |
| int32_t createMode, | |
| int32_t* _aidl_return) { | |
| *_aidl_return = | |
| mImpl.createLinkedStorage(path, otherStorageId, | |
| android::incremental::IncrementalService::CreateOptions( | |
| createMode)); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::startLoading( | |
| int32_t storageId, const ::android::content::pm::DataLoaderParamsParcel& params, | |
| const ::android::sp<::android::content::pm::IDataLoaderStatusListener>& statusListener, | |
| const ::android::os::incremental::StorageHealthCheckParams& healthCheckParams, | |
| const ::android::sp<IStorageHealthListener>& healthListener, | |
| const ::std::vector<::android::os::incremental::PerUidReadTimeouts>& perUidReadTimeouts, | |
| bool* _aidl_return) { | |
| *_aidl_return = | |
| mImpl.startLoading(storageId, const_cast<content::pm::DataLoaderParamsParcel&&>(params), | |
| statusListener, healthCheckParams, healthListener, | |
| perUidReadTimeouts); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::onInstallationComplete(int32_t storageId) { | |
| mImpl.onInstallationComplete(storageId); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::makeBindMount(int32_t storageId, | |
| const std::string& sourcePath, | |
| const std::string& targetFullPath, | |
| int32_t bindType, int32_t* _aidl_return) { | |
| *_aidl_return = mImpl.bind(storageId, sourcePath, targetFullPath, | |
| android::incremental::IncrementalService::BindKind(bindType)); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::deleteBindMount(int32_t storageId, | |
| const std::string& targetFullPath, | |
| int32_t* _aidl_return) { | |
| *_aidl_return = mImpl.unbind(storageId, targetFullPath); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::deleteStorage(int32_t storageId) { | |
| mImpl.deleteStorage(storageId); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::disallowReadLogs(int32_t storageId) { | |
| mImpl.disallowReadLogs(storageId); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::makeDirectory(int32_t storageId, const std::string& path, | |
| int32_t* _aidl_return) { | |
| *_aidl_return = mImpl.makeDir(storageId, path); | |
| return ok(); | |
| } | |
| static std::tuple<int, incfs::FileId, incfs::NewFileParams> toMakeFileParams( | |
| const android::os::incremental::IncrementalNewFileParams& params) { | |
| incfs::FileId id; | |
| if (params.fileId.empty()) { | |
| if (params.metadata.empty()) { | |
| return {EINVAL, {}, {}}; | |
| } | |
| id = IncrementalService::idFromMetadata(params.metadata); | |
| } else if (params.fileId.size() != sizeof(id)) { | |
| return {EINVAL, {}, {}}; | |
| } else { | |
| memcpy(&id, params.fileId.data(), sizeof(id)); | |
| } | |
| incfs::NewFileParams nfp; | |
| nfp.size = params.size; | |
| nfp.metadata = {(const char*)params.metadata.data(), (IncFsSize)params.metadata.size()}; | |
| if (!params.signature) { | |
| nfp.signature = {}; | |
| } else { | |
| nfp.signature = {(const char*)params.signature->data(), | |
| (IncFsSize)params.signature->size()}; | |
| } | |
| return {0, id, nfp}; | |
| } | |
| static std::span<const uint8_t> toSpan(const ::std::optional<::std::vector<uint8_t>>& content) { | |
| if (!content) { | |
| return {}; | |
| } | |
| return {content->data(), (int)content->size()}; | |
| } | |
| binder::Status BinderIncrementalService::makeFile( | |
| int32_t storageId, const std::string& path, | |
| const ::android::os::incremental::IncrementalNewFileParams& params, | |
| const ::std::optional<::std::vector<uint8_t>>& content, int32_t* _aidl_return) { | |
| auto [err, fileId, nfp] = toMakeFileParams(params); | |
| if (err) { | |
| *_aidl_return = err; | |
| return ok(); | |
| } | |
| *_aidl_return = mImpl.makeFile(storageId, path, 0777, fileId, nfp, toSpan(content)); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::makeFileFromRange(int32_t storageId, | |
| const std::string& targetPath, | |
| const std::string& sourcePath, | |
| int64_t start, int64_t end, | |
| int32_t* _aidl_return) { | |
| // TODO(b/136132412): implement this | |
| *_aidl_return = ENOSYS; // not implemented | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::makeLink(int32_t sourceStorageId, | |
| const std::string& sourcePath, | |
| int32_t destStorageId, | |
| const std::string& destPath, | |
| int32_t* _aidl_return) { | |
| *_aidl_return = mImpl.link(sourceStorageId, sourcePath, destStorageId, destPath); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::unlink(int32_t storageId, const std::string& path, | |
| int32_t* _aidl_return) { | |
| *_aidl_return = mImpl.unlink(storageId, path); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::isFileFullyLoaded(int32_t storageId, | |
| const std::string& path, | |
| int32_t* _aidl_return) { | |
| *_aidl_return = (int)mImpl.isFileFullyLoaded(storageId, path); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::isFullyLoaded(int32_t storageId, int32_t* _aidl_return) { | |
| *_aidl_return = (int)mImpl.isMountFullyLoaded(storageId); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::getLoadingProgress(int32_t storageId, | |
| float* _aidl_return) { | |
| *_aidl_return = mImpl.getLoadingProgress(storageId).getProgress(); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::getMetadataByPath(int32_t storageId, | |
| const std::string& path, | |
| std::vector<uint8_t>* _aidl_return) { | |
| auto metadata = mImpl.getMetadata(storageId, path); | |
| _aidl_return->assign(metadata.begin(), metadata.end()); | |
| return ok(); | |
| } | |
| static FileId toFileId(const std::vector<uint8_t>& id) { | |
| FileId fid = {}; | |
| memcpy(&fid, id.data(), std::min(sizeof(fid), id.size())); | |
| return fid; | |
| } | |
| binder::Status BinderIncrementalService::getMetadataById(int32_t storageId, | |
| const std::vector<uint8_t>& id, | |
| std::vector<uint8_t>* _aidl_return) { | |
| if (id.size() != sizeof(incfs::FileId)) { | |
| return ok(); | |
| } | |
| auto fid = toFileId(id); | |
| auto metadata = mImpl.getMetadata(storageId, fid); | |
| _aidl_return->assign(metadata.begin(), metadata.end()); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::makeDirectories(int32_t storageId, const std::string& path, | |
| int32_t* _aidl_return) { | |
| *_aidl_return = mImpl.makeDirs(storageId, path); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::configureNativeBinaries( | |
| int32_t storageId, const std::string& apkFullPath, const std::string& libDirRelativePath, | |
| const std::string& abi, bool extractNativeLibs, bool* _aidl_return) { | |
| *_aidl_return = mImpl.configureNativeBinaries(storageId, apkFullPath, libDirRelativePath, abi, | |
| extractNativeLibs); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::waitForNativeBinariesExtraction(int storageId, | |
| bool* _aidl_return) { | |
| *_aidl_return = mImpl.waitForNativeBinariesExtraction(storageId); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::registerLoadingProgressListener( | |
| int32_t storageId, | |
| const ::android::sp<::android::os::incremental::IStorageLoadingProgressListener>& | |
| progressListener, | |
| bool* _aidl_return) { | |
| *_aidl_return = mImpl.registerLoadingProgressListener(storageId, progressListener); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::unregisterLoadingProgressListener(int32_t storageId, | |
| bool* _aidl_return) { | |
| *_aidl_return = mImpl.unregisterLoadingProgressListener(storageId); | |
| return ok(); | |
| } | |
| binder::Status BinderIncrementalService::getMetrics(int32_t storageId, | |
| android::os::PersistableBundle* _aidl_return) { | |
| mImpl.getMetrics(storageId, _aidl_return); | |
| return ok(); | |
| } | |
| } // namespace android::os::incremental | |
| jlong Incremental_IncrementalService_Start(JNIEnv* env) { | |
| return (jlong)android::os::incremental::BinderIncrementalService::start(env); | |
| } | |
| void Incremental_IncrementalService_OnSystemReady(jlong self) { | |
| if (self) { | |
| ((android::os::incremental::BinderIncrementalService*)self)->onSystemReady(); | |
| } | |
| } | |
| void Incremental_IncrementalService_OnDump(jlong self, jint fd) { | |
| if (self) { | |
| ((android::os::incremental::BinderIncrementalService*)self)->dump(fd, {}); | |
| } else { | |
| dprintf(fd, "BinderIncrementalService is stopped."); | |
| } | |
| } |