Merge "Allow AIBinder<->IBinder when sharing libbinder." am: 6725fe4aa9 am: 015ddd7bb6 (393aa754) · Commits · e / os / android_frameworks_native-old

libs/binder/ndk/ibinder.cpp

+11 −0

Original line number	Diff line number	Diff line
		@@ -698,3 +698,14 @@ void AIBinder_setRequestingSid(AIBinder* binder, bool requestingSid) {
		const char* AIBinder_getCallingSid() {
		return ::android::IPCThreadState::self()->getCallingSid();
		}

		android::sp<android::IBinder> AIBinder_toPlatformBinder(AIBinder* binder) {
		if (binder == nullptr) return nullptr;
		return binder->getBinder();
		}

		AIBinder* AIBinder_fromPlatformBinder(const android::sp<android::IBinder>& binder) {
		sp<AIBinder> ndkBinder = ABpBinder::lookupOrCreateFromBinder(binder);
		AIBinder_incStrong(ndkBinder.get());
		return ndkBinder.get();
		}

+34 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,10 @@

		#include <android/binder_ibinder.h>

		#if !defined(__ANDROID_APEX__) && !defined(__ANDROID_VNDK__)
		#include <binder/IBinder.h>
		#endif

		__BEGIN_DECLS

		/**
		@@ -44,3 +48,33 @@ void AIBinder_setRequestingSid(AIBinder* binder, bool requestingSid) __INTRODUCE
		__attribute__((warn_unused_result)) const char* AIBinder_getCallingSid() __INTRODUCED_IN(31);

		__END_DECLS

		#if !defined(__ANDROID_APEX__) && !defined(__ANDROID_VNDK__)

		/**
		* Get libbinder version of binder from AIBinder.
		*
		* WARNING: function calls to a local object on the other side of this function
		* will parcel. When converting between binders, keep in mind it is not as
		* efficient as a direct function call.
		*
		* \param binder binder with ownership retained by the client
		* \return platform binder object
		*/
		android::sp<android::IBinder> AIBinder_toPlatformBinder(AIBinder* binder);

		/**
		* Get libbinder_ndk version of binder from platform binder.
		*
		* WARNING: function calls to a local object on the other side of this function
		* will parcel. When converting between binders, keep in mind it is not as
		* efficient as a direct function call.
		*
		* \param binder platform binder which may be from anywhere (doesn't have to be
		* created with libbinder_ndK)
		* \return binder with one reference count of ownership given to the client. See
		* AIBinder_decStrong
		*/
		AIBinder* AIBinder_fromPlatformBinder(const android::sp<android::IBinder>& binder);

		#endif

+6 −6

Original line number	Diff line number	Diff line
		@@ -95,8 +95,6 @@ LIBBINDER_NDK { # introduced=29
		AServiceManager_addService; # apex llndk
		AServiceManager_checkService; # apex llndk
		AServiceManager_getService; # apex llndk
		local:
		*;
		};

		LIBBINDER_NDK30 { # introduced=30
		@@ -111,19 +109,21 @@ LIBBINDER_NDK30 { # introduced=30
		AIBinder_markVendorStability; # llndk
		AIBinder_markVintfStability; # apex llndk
		AIBinder_Class_setHandleShellCommand; # apex llndk
		local:
		*;
		};

		LIBBINDER_NDK31 { # introduced=31
		global:
		AIBinder_getCallingSid; # apex
		AIBinder_setRequestingSid; # apex
		local:
		*;
		};

		LIBBINDER_NDK_PLATFORM {
		global:
		AParcel_getAllowFds;
		extern "C++" {
		AIBinder_fromPlatformBinder*;
		AIBinder_toPlatformBinder*;
		};
		local:
		*;
		};

+2 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,8 @@
		import IEmpty;

		interface IBinderNdkUnitTest {
		int repeatInt(int a);

		void takeInterface(IEmpty test);
		void forceFlushCommands();

+28 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,10 @@ constexpr char kExistingNonNdkService[] = "SurfaceFlinger";
		constexpr char kBinderNdkUnitTestService[] = "BinderNdkUnitTest";

		class MyBinderNdkUnitTest : public aidl::BnBinderNdkUnitTest {
		ndk::ScopedAStatus repeatInt(int32_t in, int32_t* out) {
		*out = in;
		return ndk::ScopedAStatus::ok();
		}
		ndk::ScopedAStatus takeInterface(const std::shared_ptr<aidl::IEmpty>& empty) {
		(void)empty;
		return ndk::ScopedAStatus::ok();
		@@ -329,6 +333,30 @@ TEST(NdkBinder, SentAidlBinderCanBeDestroyed) {
		EXPECT_TRUE(destroyed);
		}

		TEST(NdkBinder, ConvertToPlatformBinder) {
		for (const ndk::SpAIBinder& binder :
		{// remote
		ndk::SpAIBinder(AServiceManager_getService(kBinderNdkUnitTestService)),
		// local
		ndk::SharedRefBase::make<MyBinderNdkUnitTest>()->asBinder()}) {
		// convert to platform binder
		EXPECT_NE(binder.get(), nullptr);
		sp<IBinder> platformBinder = AIBinder_toPlatformBinder(binder.get());
		EXPECT_NE(platformBinder.get(), nullptr);
		auto proxy = interface_cast<IBinderNdkUnitTest>(platformBinder);
		EXPECT_NE(proxy, nullptr);

		// use platform binder
		int out;
		EXPECT_TRUE(proxy->repeatInt(4, &out).isOk());
		EXPECT_EQ(out, 4);

		// convert back
		ndk::SpAIBinder backBinder = ndk::SpAIBinder(AIBinder_fromPlatformBinder(platformBinder));
		EXPECT_EQ(backBinder.get(), binder.get());
		}
		}

		class MyResultReceiver : public BnResultReceiver {
		public:
		Mutex mMutex;