commit 6d28d4702101eeb1b25238248af35776d141c853
author Dimitry Ivanov <dimitry@google.com> Tue May 17 22:58:45 2016 +0000
committer android-build-merger <android-build-merger@google.com> Tue May 17 22:58:45 2016 +0000
tree 1cbfcaa06d07d1b49d7a3a9025fb6b2295f8fc47
parent a57a8d3da4719a4a5a06ca7d794ed50a017bd66c
parent 70b8d93656bcbc27776627493c67eb48344b2b08

Merge "Set parent namespace for linker-namespaces"
am: ac50d0cc57

* commit 'ac50d0cc5789d8462fcd2d9f6cb225e0edf9a12f':
  Set parent namespace for linker-namespaces

Change-Id: I832b3f228873e93a8b9a00e365af561f10b41eb2

libnativeloader/dlext_namespaces.h

diff --git a/libnativeloader/dlext_namespaces.h b/libnativeloader/dlext_namespaces.h
index ca9e619..13a44e2 100644
--- a/libnativeloader/dlext_namespaces.h
+++ b/libnativeloader/dlext_namespaces.h
@@ -83,7 +83,8 @@
                                                             const char* ld_library_path,
                                                             const char* default_library_path,
                                                             uint64_t type,
-                                                            const char* permitted_when_isolated_path);
+                                                            const char* permitted_when_isolated_path,
+                                                            android_namespace_t* parent);
 
 __END_DECLS
 

libnativeloader/native_loader.cpp

diff --git a/libnativeloader/native_loader.cpp b/libnativeloader/native_loader.cpp
index 79518ca..713a59d 100644
--- a/libnativeloader/native_loader.cpp
+++ b/libnativeloader/native_loader.cpp
@@ -95,11 +95,14 @@
       namespace_type |= ANDROID_NAMESPACE_TYPE_SHARED;
     }
 
+    android_namespace_t* parent_ns = FindParentNamespaceByClassLoader(env, class_loader);
+
     ns = android_create_namespace("classloader-namespace",
                                   nullptr,
                                   library_path.c_str(),
                                   namespace_type,
-                                  permitted_path.c_str());
+                                  permitted_path.c_str(),
+                                  parent_ns);
 
     if (ns != nullptr) {
       namespaces_.push_back(std::make_pair(env->NewWeakGlobalRef(class_loader), ns));
@@ -200,6 +203,29 @@
     return initialized_;
   }
 
+  jobject GetParentClassLoader(JNIEnv* env, jobject class_loader) {
+    jclass class_loader_class = env->FindClass("java/lang/ClassLoader");
+    jmethodID get_parent = env->GetMethodID(class_loader_class,
+                                            "getParent",
+                                            "()Ljava/lang/ClassLoader;");
+
+    return env->CallObjectMethod(class_loader, get_parent);
+  }
+
+  android_namespace_t* FindParentNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
+    jobject parent_class_loader = GetParentClassLoader(env, class_loader);
+
+    while (parent_class_loader != nullptr) {
+      android_namespace_t* ns = FindNamespaceByClassLoader(env, parent_class_loader);
+      if (ns != nullptr) {
+        return ns;
+      }
+
+      parent_class_loader = GetParentClassLoader(env, parent_class_loader);
+    }
+    return nullptr;
+  }
+
   bool initialized_;
   std::vector<std::pair<jweak, android_namespace_t*>> namespaces_;
   std::string public_libraries_;