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diff --git a/otautil/include/otautil/paths.h b/otautil/include/otautil/paths.h
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+++ b/otautil/include/otautil/paths.h
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+/*
+ * Copyright (C) 2018 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.
+ */
+
+#ifndef _OTAUTIL_PATHS_H_
+#define _OTAUTIL_PATHS_H_
+
+#include <string>
+
+#include <android-base/macros.h>
+
+// A singleton class to maintain the update related paths. The paths should be only set once at the
+// start of the program.
+class Paths {
+ public:
+  static Paths& Get();
+
+  std::string cache_log_directory() const {
+    return cache_log_directory_;
+  }
+  void set_cache_log_directory(const std::string& log_dir) {
+    cache_log_directory_ = log_dir;
+  }
+
+  std::string cache_temp_source() const {
+    return cache_temp_source_;
+  }
+  void set_cache_temp_source(const std::string& temp_source) {
+    cache_temp_source_ = temp_source;
+  }
+
+  std::string last_command_file() const {
+    return last_command_file_;
+  }
+  void set_last_command_file(const std::string& last_command_file) {
+    last_command_file_ = last_command_file;
+  }
+
+  std::string stash_directory_base() const {
+    return stash_directory_base_;
+  }
+  void set_stash_directory_base(const std::string& base) {
+    stash_directory_base_ = base;
+  }
+
+  std::string temporary_install_file() const {
+    return temporary_install_file_;
+  }
+  void set_temporary_install_file(const std::string& install_file) {
+    temporary_install_file_ = install_file;
+  }
+
+  std::string temporary_log_file() const {
+    return temporary_log_file_;
+  }
+  void set_temporary_log_file(const std::string& log_file) {
+    temporary_log_file_ = log_file;
+  }
+
+ private:
+  Paths();
+  DISALLOW_COPY_AND_ASSIGN(Paths);
+
+  // Path to the directory that contains last_log and last_kmsg log files.
+  std::string cache_log_directory_;
+
+  // Path to the temporary source file on /cache. When there isn't enough room on the target
+  // filesystem to hold the patched version of the file, we copy the original here and delete it to
+  // free up space. If the expected source file doesn't exist, or is corrupted, we look to see if
+  // the cached file contains the bits we want and use it as the source instead.
+  std::string cache_temp_source_;
+
+  // Path to the last command file.
+  std::string last_command_file_;
+
+  // Path to the base directory to write stashes during update.
+  std::string stash_directory_base_;
+
+  // Path to the temporary file that contains the install result.
+  std::string temporary_install_file_;
+
+  // Path to the temporary log file while under recovery.
+  std::string temporary_log_file_;
+};
+
+#endif  // _OTAUTIL_PATHS_H_