diff --git a/linker/linker_config.h b/linker/linker_config.h
new file mode 100644
index 0000000..4ec8b26
--- /dev/null
+++ b/linker/linker_config.h
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _LINKER_CONFIG_H_
+#define _LINKER_CONFIG_H_
+
+#include <android/api-level.h>
+
+#include <stdlib.h>
+#include <limits.h>
+#include "private/bionic_macros.h"
+
+#include <memory>
+#include <string>
+#include <vector>
+#include <unordered_map>
+
+class NamespaceLinkConfig {
+ public:
+  NamespaceLinkConfig() = default;
+  NamespaceLinkConfig(const std::string& ns_name, const std::string& shared_libs)
+      : ns_name_(ns_name), shared_libs_(shared_libs)  {}
+
+  const std::string& ns_name() const {
+    return ns_name_;
+  }
+
+  const std::string& shared_libs() const {
+    return shared_libs_;
+  }
+
+ private:
+  std::string ns_name_;
+  std::string shared_libs_;
+};
+
+class NamespaceConfig {
+ public:
+  explicit NamespaceConfig(const std::string& name)
+      : name_(name), isolated_(false)
+  {}
+
+  const char* name() const {
+    return name_.c_str();
+  }
+
+  bool isolated() const {
+    return isolated_;
+  }
+
+  const std::vector<std::string>& search_paths() const {
+    return search_paths_;
+  }
+
+  const std::vector<std::string>& permitted_paths() const {
+    return permitted_paths_;
+  }
+
+  const std::vector<NamespaceLinkConfig>& links() const {
+    return namespace_links_;
+  }
+
+  void add_namespace_link(const std::string& ns_name, const std::string& shared_libs) {
+    namespace_links_.push_back(NamespaceLinkConfig(ns_name, shared_libs));
+  }
+
+  void set_isolated(bool isolated) {
+    isolated_ = isolated;
+  }
+
+  void set_search_paths(std::vector<std::string>&& search_paths) {
+    search_paths_ = search_paths;
+  }
+
+  void set_permitted_paths(std::vector<std::string>&& permitted_paths) {
+    permitted_paths_ = permitted_paths;
+  }
+ private:
+  const std::string name_;
+  bool isolated_;
+  std::vector<std::string> search_paths_;
+  std::vector<std::string> permitted_paths_;
+  std::vector<NamespaceLinkConfig> namespace_links_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(NamespaceConfig);
+};
+
+class Config {
+ public:
+  Config() : target_sdk_version_(__ANDROID_API__) {}
+
+  const std::vector<std::unique_ptr<NamespaceConfig>>& namespace_configs() const {
+    return namespace_configs_;
+  }
+
+  const NamespaceConfig* default_namespace_config() const {
+    auto it = namespace_configs_map_.find("default");
+    return it == namespace_configs_map_.end() ? nullptr : it->second;
+  }
+
+  uint32_t target_sdk_version() const {
+    return target_sdk_version_;
+  }
+
+  // note that this is one time event and therefore there is no need to
+  // read every section of the config. Every linker instance needs at
+  // most one configuration.
+  // Returns false in case of an error. If binary config was not found
+  // sets *config = nullptr.
+  static bool read_binary_config(const char* ld_config_file_path,
+                                 const char* binary_realpath,
+                                 bool is_asan,
+                                 const Config** config,
+                                 std::string* error_msg);
+ private:
+  void clear();
+
+  void set_target_sdk_version(uint32_t target_sdk_version) {
+    target_sdk_version_ = target_sdk_version;
+  }
+
+  NamespaceConfig* create_namespace_config(const std::string& name);
+
+  std::vector<std::unique_ptr<NamespaceConfig>> namespace_configs_;
+  std::unordered_map<std::string, NamespaceConfig*> namespace_configs_map_;
+  uint32_t target_sdk_version_;
+
+  DISALLOW_COPY_AND_ASSIGN(Config);
+};
+
+#endif /* _LINKER_CONFIG_H_ */