libbinder_ndk: expose updatable-via-apex
This new API is to expose the value of updatable-via-apex. In API31,
AServiceManager_isUpdatableViaApex was added. Some HAL clients need to
know the name of APEX for a certain service when it's updatable via
APEX to get more info using the apex name as key. (For example, APEX
version)
Bug: 249190796
Test: libbinder_ndk_unit_test
Test: manually specifying updatable-via-apex on a
service and checking the result
Change-Id: Ic729c50abce783addd302e8c98c1994422882437
diff --git a/libs/binder/ndk/include_platform/android/binder_manager.h b/libs/binder/ndk/include_platform/android/binder_manager.h
index dfa8ea2..c234270 100644
--- a/libs/binder/ndk/include_platform/android/binder_manager.h
+++ b/libs/binder/ndk/include_platform/android/binder_manager.h
@@ -143,6 +143,17 @@
bool AServiceManager_isUpdatableViaApex(const char* instance) __INTRODUCED_IN(31);
/**
+ * Returns the APEX name if a service is declared as updatable via an APEX module.
+ *
+ * \param instance identifier of the service
+ * \param context to pass to callback
+ * \param callback taking the APEX name (e.g. 'com.android.foo') and context
+ */
+void AServiceManager_getUpdatableApexName(const char* instance, void* context,
+ void (*callback)(const char*, void*))
+ __INTRODUCED_IN(__ANDROID_API_U__);
+
+/**
* Prevent lazy services without client from shutting down their process
*
* This should only be used if it is every eventually set to false. If a
diff --git a/libs/binder/ndk/libbinder_ndk.map.txt b/libs/binder/ndk/libbinder_ndk.map.txt
index 259a736..32ca564 100644
--- a/libs/binder/ndk/libbinder_ndk.map.txt
+++ b/libs/binder/ndk/libbinder_ndk.map.txt
@@ -152,6 +152,11 @@
AParcel_unmarshal;
};
+LIBBINDER_NDK34 { # introduced=UpsideDownCake
+ global:
+ AServiceManager_getUpdatableApexName; # systemapi
+};
+
LIBBINDER_NDK_PLATFORM {
global:
AParcel_getAllowFds;
diff --git a/libs/binder/ndk/service_manager.cpp b/libs/binder/ndk/service_manager.cpp
index 7649a26..a12d0e9 100644
--- a/libs/binder/ndk/service_manager.cpp
+++ b/libs/binder/ndk/service_manager.cpp
@@ -113,6 +113,18 @@
sp<IServiceManager> sm = defaultServiceManager();
return sm->updatableViaApex(String16(instance)) != std::nullopt;
}
+void AServiceManager_getUpdatableApexName(const char* instance, void* context,
+ void (*callback)(const char*, void*)) {
+ CHECK_NE(instance, nullptr);
+ // context may be nullptr
+ CHECK_NE(callback, nullptr);
+
+ sp<IServiceManager> sm = defaultServiceManager();
+ std::optional<String16> updatableViaApex = sm->updatableViaApex(String16(instance));
+ if (updatableViaApex.has_value()) {
+ callback(String8(updatableViaApex.value()).c_str(), context);
+ }
+}
void AServiceManager_forceLazyServicesPersist(bool persist) {
auto serviceRegistrar = android::binder::LazyServiceRegistrar::getInstance();
serviceRegistrar.forcePersist(persist);
diff --git a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
index 01b9472..e221e4c 100644
--- a/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
+++ b/libs/binder/ndk/tests/libbinder_ndk_unit_test.cpp
@@ -33,13 +33,15 @@
#include <binder/IResultReceiver.h>
#include <binder/IServiceManager.h>
#include <binder/IShellCallback.h>
-
#include <sys/prctl.h>
+
#include <chrono>
#include <condition_variable>
#include <iostream>
#include <mutex>
+#include <optional>
#include <thread>
+
#include "android/binder_ibinder.h"
using namespace android;
@@ -337,6 +339,16 @@
EXPECT_EQ(isUpdatable, false);
}
+TEST(NdkBinder, GetUpdatableViaApex) {
+ std::optional<std::string> updatableViaApex;
+ AServiceManager_getUpdatableApexName(
+ "android.hardware.light.ILights/default", &updatableViaApex,
+ [](const char* apexName, void* context) {
+ *static_cast<std::optional<std::string>*>(context) = apexName;
+ });
+ EXPECT_EQ(updatableViaApex, std::nullopt) << *updatableViaApex;
+}
+
// This is too slow
TEST(NdkBinder, CheckLazyServiceShutDown) {
ndk::SpAIBinder binder(AServiceManager_waitForService(kLazyBinderNdkUnitTestService));