servicemanager: use libbinder

Bug: 135768100
Test: boot
Test: servicemanager_test

Change-Id: I9d657b6c0d0be0f763b6d54e0e6c6bc1c1e3fc7a
(cherry picked from commit 3e092daa14c63831d76d3ad6e56b2919a0523536)

1 files changed, 28 insertions, 30 deletions

diff --git a/libs/binder/IServiceManager.cpp b/libs/binder/IServiceManager.cpp
index 0203d41992..07550fb571 100644
--- a/libs/binder/IServiceManager.cpp
+++ b/libs/binder/IServiceManager.cpp
@@ -18,6 +18,7 @@
 
 #include <binder/IServiceManager.h>
 
+#include <android/os/IServiceManager.h>
 #include <utils/Log.h>
 #include <binder/IPCThreadState.h>
 #ifndef __ANDROID_VNDK__
@@ -34,6 +35,9 @@
 
 namespace android {
 
+using AidlServiceManager = android::os::IServiceManager;
+using android::binder::Status;
+
 sp<IServiceManager> defaultServiceManager()
 {
     static Mutex gDefaultServiceManagerLock;
@@ -142,11 +146,12 @@ class BpServiceManager : public BpInterface<IServiceManager>
 {
 public:
     explicit BpServiceManager(const sp<IBinder>& impl)
-        : BpInterface<IServiceManager>(impl)
+        : BpInterface<IServiceManager>(impl),
+          mTheRealServiceManager(interface_cast<AidlServiceManager>(impl))
     {
     }
 
-    virtual sp<IBinder> getService(const String16& name) const
+    sp<IBinder> getService(const String16& name) const override
     {
         static bool gSystemBootCompleted = false;
 
@@ -179,43 +184,36 @@ public:
         return nullptr;
     }
 
-    virtual sp<IBinder> checkService( const String16& name) const
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor());
-        data.writeString16(name);
-        remote()->transact(CHECK_SERVICE_TRANSACTION, data, &reply);
-        return reply.readStrongBinder();
+    sp<IBinder> checkService(const String16& name) const override {
+        sp<IBinder> ret;
+        if (!mTheRealServiceManager->checkService(String8(name).c_str(), &ret).isOk()) {
+            return nullptr;
+        }
+        return ret;
     }
 
-    virtual status_t addService(const String16& name, const sp<IBinder>& service,
-                                bool allowIsolated, int dumpsysPriority) {
-        Parcel data, reply;
-        data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor());
-        data.writeString16(name);
-        data.writeStrongBinder(service);
-        data.writeInt32(allowIsolated ? 1 : 0);
-        data.writeInt32(dumpsysPriority);
-        status_t err = remote()->transact(ADD_SERVICE_TRANSACTION, data, &reply);
-        return err == NO_ERROR ? reply.readExceptionCode() : err;
+    status_t addService(const String16& name, const sp<IBinder>& service,
+                        bool allowIsolated, int dumpsysPriority) override {
+        Status status = mTheRealServiceManager->addService(String8(name).c_str(), service, allowIsolated, dumpsysPriority);
+        return status.exceptionCode();
     }
 
     virtual Vector<String16> listServices(int dumpsysPriority) {
-        Vector<String16> res;
-        int n = 0;
+        std::vector<std::string> ret;
+        if (!mTheRealServiceManager->listServices(dumpsysPriority, &ret).isOk()) {
+            return {};
+        }
 
-        for (;;) {
-            Parcel data, reply;
-            data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor());
-            data.writeInt32(n++);
-            data.writeInt32(dumpsysPriority);
-            status_t err = remote()->transact(LIST_SERVICES_TRANSACTION, data, &reply);
-            if (err != NO_ERROR)
-                break;
-            res.add(reply.readString16());
+        Vector<String16> res;
+        res.setCapacity(ret.size());
+        for (const std::string& name : ret) {
+            res.push(String16(name.c_str()));
         }
         return res;
     }
+
+private:
+    sp<AidlServiceManager> mTheRealServiceManager;
 };
 
 IMPLEMENT_META_INTERFACE(ServiceManager, "android.os.IServiceManager");