commit 00aeb76928c7bd4c6455ff959ed3cc3bce69a73d
author Yifan Hong <elsk@google.com> Wed May 12 17:07:36 2021 -0700
committer Yifan Hong <elsk@google.com> Thu May 13 20:16:09 2021 -0700
tree d74ca77fc2e8390163d4c40eda72972cbcced7ff
parent 95f88e71c329fb8dbff134a690600de752b9f384

RpcServer: expose server fd

Add a few functions that allows to expose the socket()
fd, because socket() and accept() may be called
in different processes.

Test: binderRpcTest
Test: binderLibTest
Bug: 182914638
Change-Id: I5489516fc92977aca4c98ee2dcdfa8365f8740c9

libs/binder/tests/binderRpcTest.cpp

diff --git a/libs/binder/tests/binderRpcTest.cpp b/libs/binder/tests/binderRpcTest.cpp
index 260be57..a96deb5 100644
--- a/libs/binder/tests/binderRpcTest.cpp
+++ b/libs/binder/tests/binderRpcTest.cpp
@@ -49,6 +49,19 @@
     EXPECT_DEATH(p.markForBinder(sp<BBinder>::make()), "");
 }
 
+TEST(BinderRpc, SetExternalServer) {
+    base::unique_fd sink(TEMP_FAILURE_RETRY(open("/dev/null", O_RDWR)));
+    int sinkFd = sink.get();
+    auto server = RpcServer::make();
+    server->iUnderstandThisCodeIsExperimentalAndIWillNotUseItInProduction();
+    ASSERT_FALSE(server->hasServer());
+    ASSERT_TRUE(server->setupExternalServer(std::move(sink)));
+    ASSERT_TRUE(server->hasServer());
+    base::unique_fd retrieved = server->releaseServer();
+    ASSERT_FALSE(server->hasServer());
+    ASSERT_EQ(sinkFd, retrieved.get());
+}
+
 using android::binder::Status;
 
 #define EXPECT_OK(status)                 \