Initial Binder interface for installd. am: 9087400f3c am: 5b62e60a38 (65531010) · Commits · e / os / android_frameworks_native

cmds/installd/Android.mk

+7 −1

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		@@ -91,13 +91,19 @@ include $(CLEAR_VARS)
		LOCAL_MODULE := installd
		LOCAL_MODULE_TAGS := optional
		LOCAL_CFLAGS := $(common_cflags)
		LOCAL_SRC_FILES := installd.cpp $(common_src_files)
		LOCAL_SRC_FILES := $(common_src_files) \
		installd.cpp \
		InstalldNativeService.cpp \
		binder/android/os/IInstalld.aidl \

		LOCAL_SHARED_LIBRARIES := \
		libbase \
		libbinder \
		libcutils \
		liblog \
		liblogwrap \
		libselinux \
		libutils

		LOCAL_STATIC_LIBRARIES := libdiskusage
		LOCAL_ADDITIONAL_DEPENDENCIES += $(LOCAL_PATH)/Android.mk

cmds/installd/InstalldNativeService.cpp

0 → 100644

+120 −0

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		/**
		* Copyright (c) 2016, 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 "installd"

		#include <vector>
		#include <fstream>

		#include <android-base/stringprintf.h>
		#include <binder/IPCThreadState.h>
		#include <binder/IServiceManager.h>
		#include <cutils/log.h>
		#include <cutils/properties.h>
		#include <private/android_filesystem_config.h>
		#include <utils/Errors.h>
		#include <utils/String16.h>

		#include "InstalldNativeService.h"

		#include "commands.h"

		using android::base::StringPrintf;

		namespace android {
		namespace installd {

		namespace {

		constexpr const char* kDump = "android.permission.DUMP";

		binder::Status checkPermission(const char* permission) {
		pid_t pid;
		uid_t uid;

		if (checkCallingPermission(String16(permission), reinterpret_cast<int32_t*>(&pid),
		reinterpret_cast<int32_t*>(&uid))) {
		return binder::Status::ok();
		} else {
		auto err = StringPrintf("UID %d / PID %d lacks permission %s", uid, pid, permission);
		return binder::Status::fromExceptionCode(binder::Status::EX_SECURITY, String8(err.c_str()));
		}
		}

		binder::Status checkUid(uid_t expectedUid) {
		uid_t uid = IPCThreadState::self()->getCallingUid();
		if (uid == expectedUid) {
		return binder::Status::ok();
		} else {
		auto err = StringPrintf("UID %d is not expected UID %d", uid, expectedUid);
		return binder::Status::fromExceptionCode(binder::Status::EX_SECURITY, String8(err.c_str()));
		}
		}

		#define ENFORCE_UID(uid) { \
		binder::Status status = checkUid((uid)); \
		if (!status.isOk()) { \
		return status; \
		} \
		}

		} // namespace

		status_t InstalldNativeService::start() {
		IPCThreadState::self()->disableBackgroundScheduling(true);
		status_t ret = BinderService<InstalldNativeService>::publish();
		if (ret != android::OK) {
		return ret;
		}
		sp<ProcessState> ps(ProcessState::self());
		ps->startThreadPool();
		ps->giveThreadPoolName();
		return android::OK;
		}

		status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) {
		const binder::Status dump_permission = checkPermission(kDump);
		if (!dump_permission.isOk()) {
		const String8 msg(dump_permission.toString8());
		write(fd, msg.string(), msg.size());
		return PERMISSION_DENIED;
		}

		std::string msg = "installd is happy\n";
		write(fd, msg.c_str(), strlen(msg.c_str()));
		return NO_ERROR;
		}

		static binder::Status translateStatus(int ret) {
		if (ret != 0) {
		auto err = StringPrintf("Failed with error %d", ret);
		return binder::Status::fromServiceSpecificError(ret, String8(err.c_str()));
		} else {
		return binder::Status::ok();
		}
		}

		binder::Status InstalldNativeService::createAppData(const std::unique_ptr<std::string>& uuid,
		const std::string& pkgname, int32_t userid, int32_t flags, int32_t appid,
		const std::string& seinfo, int32_t targetSdkVersion) {
		ENFORCE_UID(AID_SYSTEM);
		const char* _uuid = uuid ? (*uuid).c_str() : nullptr;
		return translateStatus(create_app_data(_uuid, pkgname.c_str(), userid, flags, appid,
		seinfo.c_str(), targetSdkVersion));
		}

		} // namespace installd
		} // namespace android

cmds/installd/InstalldNativeService.h

0 → 100644

+43 −0

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		/**
		* Copyright (c) 2016, 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 _INSTALLD_NATIVE_SERVICE_H_
		#define _INSTALLD_NATIVE_SERVICE_H_

		#include <vector>

		#include <binder/BinderService.h>

		#include "android/os/BnInstalld.h"

		namespace android {
		namespace installd {

		class InstalldNativeService : public BinderService<InstalldNativeService>, public os::BnInstalld {
		public:
		static status_t start();
		static char const* getServiceName() { return "installd"; }
		virtual status_t dump(int fd, const Vector<String16> &args) override;

		binder::Status createAppData(const std::unique_ptr<std::string>& uuid,
		const std::string& pkgname, int32_t userid, int32_t flags, int32_t appid,
		const std::string& seinfo, int32_t targetSdkVersion);
		};

		} // namespace installd
		} // namespace android

		#endif // _INSTALLD_NATIVE_SERVICE_H_

cmds/installd/binder/android/os/IInstalld.aidl

0 → 100644

+22 −0

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		/*
		* Copyright (C) 2016 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.
		*/

		package android.os;

		interface IInstalld {
		void createAppData(in @nullable @utf8InCpp String uuid, in @utf8InCpp String pkgname,
		int userid, int flags, int appid, in @utf8InCpp String seinfo, int targetSdkVersion);
		}

cmds/installd/installd.cpp

+8 −1

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		@@ -30,6 +30,8 @@
		#include <cutils/sockets.h>
		#include <private/android_filesystem_config.h>

		#include <InstalldNativeService.h>

		#include <commands.h>
		#include <globals.h>
		#include <installd_constants.h>
		@@ -705,7 +707,7 @@ static int installd_main(const int argc ATTRIBUTE_UNUSED, char *argv[]) {
		char buf[BUFFER_MAX];
		struct sockaddr addr;
		socklen_t alen;
		int lsocket, s;
		int lsocket, s, ret;
		int selinux_enabled = (is_selinux_enabled() > 0);

		setenv("ANDROID_LOG_TAGS", "*:v", 1);
		@@ -732,6 +734,11 @@ static int installd_main(const int argc ATTRIBUTE_UNUSED, char *argv[]) {
		exit(1);
		}

		if ((ret = InstalldNativeService::start()) != android::OK) {
		ALOGE("Unable to start InstalldNativeService: %d", ret);
		exit(1);
		}

		lsocket = android_get_control_socket(SOCKET_PATH);
		if (lsocket < 0) {
		ALOGE("Failed to get socket from environment: %s\n", strerror(errno));