health.storage: Add default implementation. (c0263aa0) · Commits · e / os / android_hardware_interfaces

health/storage/1.0/default/Android.bp

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		/*
		* Copyright (C) 2018 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.
		*/

		cc_binary {
		name: "android.hardware.health.storage@1.0-service",
		vendor: true,
		defaults: ["hidl_defaults"],
		relative_install_path: "hw",
		init_rc: ["android.hardware.health.storage@1.0-service.rc"],
		srcs: [
		"Storage.cpp",
		"service.cpp",
		],

		cflags: [
		"-Wall",
		"-Werror",
		],

		shared_libs: [
		"libbase",
		"libhidlbase",
		"libhidltransport",
		"libutils",
		"android.hardware.health.storage@1.0",
		],

		static_libs: [
		"libfstab",
		],

		vintf_fragments: [
		"manifest_android.hardware.health.storage@1.0.xml",
		],
		}

health/storage/1.0/default/Storage.cpp

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		/*
		* Copyright (C) 2018 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 "Storage.h"

		#include <sstream>

		#include <android-base/chrono_utils.h>
		#include <android-base/file.h>
		#include <android-base/logging.h>
		#include <android-base/strings.h>
		#include <fstab/fstab.h>

		namespace android {
		namespace hardware {
		namespace health {
		namespace storage {
		namespace V1_0 {
		namespace implementation {

		using base::ReadFileToString;
		using base::Timer;
		using base::Trim;
		using base::WriteStringToFd;
		using base::WriteStringToFile;

		std::string getGarbageCollectPath() {
		std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
		fs_mgr_free_fstab);
		struct fstab_rec* rec = NULL;

		for (int i = 0; i < fstab->num_entries; i++) {
		if (fs_mgr_has_sysfs_path(&fstab->recs[i])) {
		rec = &fstab->recs[i];
		break;
		}
		}
		if (!rec) {
		return "";
		}

		std::string path;
		path.append(rec->sysfs_path);
		path = path + "/manual_gc";

		return path;
		}

		Return<void> Storage::garbageCollect(uint64_t timeoutSeconds,
		const sp<IGarbageCollectCallback>& cb) {
		Result result = Result::SUCCESS;
		std::string path = getGarbageCollectPath();

		if (path.empty()) {
		LOG(WARNING) << "Cannot find Dev GC path";
		result = Result::UNKNOWN_ERROR;
		} else {
		Timer timer;
		LOG(INFO) << "Start Dev GC on " << path;
		while (1) {
		std::string require;
		if (!ReadFileToString(path, &require)) {
		PLOG(WARNING) << "Reading manual_gc failed in " << path;
		result = Result::IO_ERROR;
		break;
		}
		require = Trim(require);
		if (require == "" \|\| require == "off" \|\| require == "disabled") {
		LOG(DEBUG) << "No more to do Dev GC";
		break;
		}
		LOG(DEBUG) << "Trigger Dev GC on " << path;
		if (!WriteStringToFile("1", path)) {
		PLOG(WARNING) << "Start Dev GC failed on " << path;
		result = Result::IO_ERROR;
		break;
		}
		if (timer.duration() >= std::chrono::seconds(timeoutSeconds)) {
		LOG(WARNING) << "Dev GC timeout";
		// Timeout is not treated as an error. Try next time.
		break;
		}
		sleep(2);
		}
		LOG(INFO) << "Stop Dev GC on " << path;
		if (!WriteStringToFile("0", path)) {
		PLOG(WARNING) << "Stop Dev GC failed on " << path;
		result = Result::IO_ERROR;
		}
		}

		if (cb != nullptr) {
		auto ret = cb->onFinish(result);
		if (!ret.isOk()) {
		LOG(WARNING) << "Cannot return result to callback: " << ret.description();
		}
		}
		return Void();
		}

		Return<void> Storage::debug(const hidl_handle& handle, const hidl_vec<hidl_string>&) {
		if (handle == nullptr \|\| handle->numFds < 1) {
		return Void();
		}

		int fd = handle->data[0];
		std::stringstream output;

		std::string path = getGarbageCollectPath();
		if (path.empty()) {
		output << "Cannot find Dev GC path";
		} else {
		std::string require;

		if (ReadFileToString(path, &require)) {
		output << path << ":" << require << std::endl;
		}

		if (WriteStringToFile("0", path)) {
		output << "stop success" << std::endl;
		}
		}

		if (!WriteStringToFd(output.str(), fd)) {
		PLOG(WARNING) << "debug: cannot write to fd";
		}

		fsync(fd);

		return Void();
		}

		} // namespace implementation
		} // namespace V1_0
		} // namespace storage
		} // namespace health
		} // namespace hardware
		} // namespace android

health/storage/1.0/default/Storage.h

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		/*
		* Copyright (C) 2018 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.
		*/

		#ifndef ANDROID_HARDWARE_HEALTH_FILESYSTEM_V1_0_FILESYSTEM_H
		#define ANDROID_HARDWARE_HEALTH_FILESYSTEM_V1_0_FILESYSTEM_H

		#include <android/hardware/health/storage/1.0/IStorage.h>
		#include <hidl/Status.h>

		namespace android {
		namespace hardware {
		namespace health {
		namespace storage {
		namespace V1_0 {
		namespace implementation {

		using ::android::sp;
		using ::android::hardware::hidl_handle;
		using ::android::hardware::hidl_string;
		using ::android::hardware::hidl_vec;
		using ::android::hardware::Return;

		struct Storage : public IStorage {
		Return<void> garbageCollect(uint64_t timeoutSeconds,
		const sp<IGarbageCollectCallback>& cb) override;
		Return<void> debug(const hidl_handle& handle, const hidl_vec<hidl_string>&) override;
		};

		} // namespace implementation
		} // namespace V1_0
		} // namespace storage
		} // namespace health
		} // namespace hardware
		} // namespace android

		#endif // ANDROID_HARDWARE_HEALTH_FILESYSTEM_V1_0_FILESYSTEM_H

health/storage/1.0/default/android.hardware.health.storage@1.0-service.rc

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		service vendor.health-storage-hal-1-0 /vendor/bin/hw/android.hardware.health.storage@1.0-service
		interface android.hardware.health.storage@1.0::IStorage default
		class hal
		user system
		group system

health/storage/1.0/default/manifest_android.hardware.health.storage@1.0.xml

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		<manifest version="1.0" type="device">
		<hal>
		<name>android.hardware.health.storage</name>
		<transport>hwbinder</transport>
		<version>1.0</version>
		<interface>
		<name>IStorage</name>
		<instance>default</instance>
		</interface>
		</hal>
		</manifest>