Merge "Add RPC binder as unstable API with Rust bindgen" (21176647) · Commits · e / os / android_frameworks_native

libs/binder/Android.bp

+26 −0

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		@@ -257,6 +257,32 @@ aidl_interface {
		},
		}

		// TODO(b/184872979): remove once the Rust API is created.
		cc_library {
		name: "libbinder_rpc_unstable",
		srcs: ["libbinder_rpc_unstable.cpp"],
		defaults: ["libbinder_ndk_host_user"],
		shared_libs: [
		"libbase",
		"libbinder",
		"libbinder_ndk",
		"libutils",
		],

		// enumerate stable entry points, for apex use
		stubs: {
		symbol_file: "libbinder_rpc_unstable.map.txt",
		},

		// This library is intentionally limited to these targets, and it will be removed later.
		// Do not expand the visibility.
		visibility: [
		"//packages/modules/Virtualization/authfs:__subpackages__",
		"//packages/modules/Virtualization/compos",
		"//packages/modules/Virtualization/microdroid",
		],
		}

		// libbinder historically contained additional interfaces that provided specific
		// functionality in the platform but have nothing to do with binder itself. These
		// are moved out of libbinder in order to avoid the overhead of their vtables.

libs/binder/libbinder_rpc_unstable.cpp

0 → 100644

+50 −0

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		/*
		* Copyright (C) 2021 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 <android-base/logging.h>
		#include <android/binder_libbinder.h>
		#include <binder/RpcServer.h>
		#include <binder/RpcSession.h>

		using android::RpcServer;
		using android::RpcSession;

		extern "C" {

		bool RunRpcServer(AIBinder* service, unsigned int port) {
		auto server = RpcServer::make();
		server->iUnderstandThisCodeIsExperimentalAndIWillNotUseItInProduction();
		if (!server->setupVsockServer(port)) {
		LOG(ERROR) << "Failed to set up vsock server with port " << port;
		return false;
		}
		server->setRootObject(AIBinder_toPlatformBinder(service));
		server->join();

		// Shutdown any open sessions since server failed.
		(void)server->shutdown();
		return true;
		}

		AIBinder* RpcClient(unsigned int cid, unsigned int port) {
		auto session = RpcSession::make();
		if (!session->setupVsockClient(cid, port)) {
		LOG(ERROR) << "Failed to set up vsock client with CID " << cid << " and port " << port;
		return nullptr;
		}
		return AIBinder_fromPlatformBinder(session->getRootObject());
		}
		}

libs/binder/libbinder_rpc_unstable.map.txt

0 → 100644

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		LIBBINDER_RPC_UNSTABLE_SHIM { # platform-only
		global:
		RunRpcServer;
		RpcClient;
		local:
		*;
		};

libs/binder/rust/Android.bp

+15 −0

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		@@ -106,6 +106,21 @@ rust_bindgen {
		],
		}

		// TODO(b/184872979): remove once the Rust API is created.
		rust_bindgen {
		name: "libbinder_rpc_unstable_bindgen",
		wrapper_src: "src/binder_rpc_unstable.hpp",
		crate_name: "binder_rpc_unstable_bindgen",
		source_stem: "bindings",
		shared_libs: [
		"libutils",
		],
		apex_available: [
		"com.android.compos",
		"com.android.virt",
		],
		}

		rust_test {
		name: "libbinder_rs-internal_test",
		crate_name: "binder",

libs/binder/rust/src/binder_rpc_unstable.hpp

0 → 100644

+26 −0

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		/*
		* Copyright (C) 2021 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.
		*/

		#pragma once

		extern "C" {

		struct AIBinder;

		bool RunRpcServer(AIBinder* service, unsigned int port);
		AIBinder* RpcClient(unsigned int cid, unsigned int port);

		}