Merge "libbinder: build on Trusty" (c031c5f9) · Commits · e / os / android_frameworks_native

libs/binder/RpcServer.cpp

+9 −6

Original line number	Diff line number	Diff line
		@@ -209,9 +209,10 @@ void RpcServer::join() {

		{
		RpcMutexLockGuard _l(mLock);
		RpcMaybeThread thread = RpcMaybeThread(&RpcServer::establishConnection,
		sp<RpcServer>::fromExisting(this),
		std::move(clientFd), addr, addrLen);
		RpcMaybeThread thread =
		RpcMaybeThread(&RpcServer::establishConnection,
		sp<RpcServer>::fromExisting(this), std::move(clientFd), addr,
		addrLen, RpcSession::join);

		auto& threadRef = mConnectingThreads[thread.get_id()];
		threadRef = std::move(thread);
		@@ -294,8 +295,10 @@ size_t RpcServer::numUninitializedSessions() {
		return mConnectingThreads.size();
		}

		void RpcServer::establishConnection(sp<RpcServer>&& server, base::unique_fd clientFd,
		std::array<uint8_t, kRpcAddressSize> addr, size_t addrLen) {
		void RpcServer::establishConnection(
		sp<RpcServer>&& server, base::unique_fd clientFd, std::array<uint8_t, kRpcAddressSize> addr,
		size_t addrLen,
		std::function<void(sp<RpcSession>&&, RpcSession::PreJoinSetupResult&&)>&& joinFn) {
		// mShutdownTrigger can only be cleared once connection threads have joined.
		// It must be set before this thread is started
		LOG_ALWAYS_FATAL_IF(server->mShutdownTrigger == nullptr);
		@@ -478,7 +481,7 @@ void RpcServer::establishConnection(sp<RpcServer>&& server, base::unique_fd clie
		// avoid strong cycle
		server = nullptr;

		RpcSession::join(std::move(session), std::move(setupResult));
		joinFn(std::move(session), std::move(setupResult));
		}

		status_t RpcServer::setupSocketServer(const RpcSocketAddress& addr) {

+6 −2

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@
		namespace android {

		class FdTrigger;
		class RpcServerTrusty;
		class RpcSocketAddress;

		/**
		@@ -189,6 +190,7 @@ public:
		~RpcServer();

		private:
		friend RpcServerTrusty;
		friend sp<RpcServer>;
		explicit RpcServer(std::unique_ptr<RpcTransportCtx> ctx);

		@@ -196,8 +198,10 @@ private:
		void onSessionIncomingThreadEnded() override;

		static constexpr size_t kRpcAddressSize = 128;
		static void establishConnection(sp<RpcServer>&& server, base::unique_fd clientFd,
		std::array<uint8_t, kRpcAddressSize> addr, size_t addrLen);
		static void establishConnection(
		sp<RpcServer>&& server, base::unique_fd clientFd,
		std::array<uint8_t, kRpcAddressSize> addr, size_t addrLen,
		std::function<void(sp<RpcSession>&&, RpcSession::PreJoinSetupResult&&)>&& joinFn);
		[[nodiscard]] status_t setupSocketServer(const RpcSocketAddress& address);

		const std::unique_ptr<RpcTransportCtx> mCtx;

+2 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,7 @@ namespace android {

		class Parcel;
		class RpcServer;
		class RpcServerTrusty;
		class RpcSocketAddress;
		class RpcState;
		class RpcTransport;
		@@ -202,6 +203,7 @@ public:
		private:
		friend sp<RpcSession>;
		friend RpcServer;
		friend RpcServerTrusty;
		friend RpcState;
		explicit RpcSession(std::unique_ptr<RpcTransportCtx> ctx);

0 → 100644

+35 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2022 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 <openssl/rand.h>

		#include "../OS.h"

		using android::base::Result;

		namespace android {

		Result<void> setNonBlocking(android::base::borrowed_fd fd) {
		// Trusty IPC syscalls are all non-blocking by default.
		return {};
		}

		status_t getRandomBytes(uint8_t* data, size_t size) {
		int res = RAND_bytes(data, size);
		return res == 1 ? OK : UNKNOWN_ERROR;
		}

		} // namespace android

0 → 100644

+39 −0

Original line number	Diff line number	Diff line
		# Binder for Trusty

		This is the Trusty port of the libbinder library.
		To build it, take the following steps:

		* Check out copies of the Trusty and AOSP repositories.
		* Apply the patches from the `trusty_binder` topic on both repositories.
		* Build Trusty normally using `build.py`.
		* Run the sample AIDL test for Trusty:
		```shell
		$ ./build-root/.../run --headless --boot-test com.android.trusty.aidl.test
		```

		To run the Android-Trusty IPC test, do the following:

		* Build AOSP for the `qemu_trusty_arm64-userdebug` target:
		```shell
		$ lunch qemu_trusty_arm64-userdebug
		$ m
		```
		* In the Trusty directory, run the emulator with the newly built Android:
		```shell
		$ ./build-root/.../run --android /path/to/aosp
		```
		* Using either `adb` or the shell inside the emulator itself, run the Trusty
		Binder test as root:
		```shell
		# /data/nativetest64/vendor/trusty_binder_test/trusty_binder_test
		```

		## Running the AIDL compiler
		For now, you will need to run the AIDL compiler manually to generate the C++
		source code for Trusty clients and services. The general syntax is:
		```shell
		$ aidl --lang=cpp -o <output directory> -h <output header directory> <AIDL files...>
		```

		The compiler will emit some `.cpp` files in the output directory and their
		corresponding `.h` files in the header directory.