Add a method for libbinder to wrap an accessor in a delegator
Libbinder is the only place with the IAccessorDelegator class so it must
be responsible for wrapping the IAccesses with an IAccessorDelegator.
This is used when the process with the permissions to connect to the
server over binder RPC is in a seperate process from the process that
wants to serve the IAccessor binder.
Test: atest vm_accessor_test binderRpcTest
Bug: 358427181
Change-Id: I0839f7d1b466ba9bfb13031596523314718d3677
diff --git a/libs/binder/ndk/binder_rpc.cpp b/libs/binder/ndk/binder_rpc.cpp
index 3c32a39..07b8c40 100644
--- a/libs/binder/ndk/binder_rpc.cpp
+++ b/libs/binder/ndk/binder_rpc.cpp
@@ -302,6 +302,28 @@
}
}
+binder_status_t ABinderRpc_Accessor_delegateAccessor(const char* instance, AIBinder* accessor,
+ AIBinder** outDelegator) {
+ LOG_ALWAYS_FATAL_IF(outDelegator == nullptr, "The outDelegator argument is null");
+ if (instance == nullptr || accessor == nullptr) {
+ ALOGW("instance or accessor arguments to ABinderRpc_Accessor_delegateBinder are null");
+ *outDelegator = nullptr;
+ return STATUS_UNEXPECTED_NULL;
+ }
+ sp<IBinder> accessorBinder = accessor->getBinder();
+
+ sp<IBinder> delegator;
+ status_t status = android::delegateAccessor(String16(instance), accessorBinder, &delegator);
+ if (status != OK) {
+ return PruneStatusT(status);
+ }
+ sp<AIBinder> binder = ABpBinder::lookupOrCreateFromBinder(delegator);
+ // This AIBinder needs a strong ref to pass ownership to the caller
+ binder->incStrong(nullptr);
+ *outDelegator = binder.get();
+ return OK;
+}
+
ABinderRpc_ConnectionInfo* ABinderRpc_ConnectionInfo_new(const sockaddr* addr, socklen_t len) {
if (addr == nullptr || len < 0 || static_cast<size_t>(len) < sizeof(sa_family_t)) {
ALOGE("Invalid arguments in ABinderRpc_Connection_new");