Add support for protected local symbol lookup.
Bug: http://code.google.com/p/android/issues/detail?id=66048
Change-Id: Ib334223df27adad9477fb241ab099c5e26df4a7d
diff --git a/tests/libs/dlsym_local_symbol_public.cpp b/tests/libs/dlsym_local_symbol_public.cpp
new file mode 100644
index 0000000..d9da32a
--- /dev/null
+++ b/tests/libs/dlsym_local_symbol_public.cpp
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <dlfcn.h>
+#include <stdio.h>
+
+extern const uint32_t private_taxicab_number;
+
+extern "C" {
+uint32_t dlsym_local_symbol_get_taxicab_number();
+uint32_t dlsym_local_symbol_get_taxicab_number_using_dlsym();
+}
+
+uint32_t dlsym_local_symbol_get_taxicab_number() {
+ return private_taxicab_number;
+}
+
+// Let's make sure that dlsym works correctly for local symbol
+uint32_t dlsym_local_symbol_get_taxicab_number_using_dlsym() {
+ dlerror();
+ uint32_t* ptr = reinterpret_cast<uint32_t*>(dlsym(RTLD_DEFAULT, "private_taxicab_number"));
+ if (ptr == nullptr) {
+ const char* dlerr = dlerror();
+ if (dlerr != nullptr) {
+ fprintf(stderr, "dlsym error: %s\n", dlerr);
+ } else {
+ fprintf(stderr, "dlsym returned NULL with no dlerror.\n");
+ }
+ return 0;
+ }
+
+ return *ptr;
+}