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diff --git a/tensorflow/core/lib/io/path.h b/tensorflow/core/lib/io/path.h
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+#ifndef TENSORFLOW_LIB_IO_PATH_H_
+#define TENSORFLOW_LIB_IO_PATH_H_
+
+#include "tensorflow/core/lib/core/stringpiece.h"
+#include "tensorflow/core/public/status.h"
+
+namespace tensorflow {
+class StringPiece;
+namespace io {
+
+// Utility routines for processing filenames
+
+// Join multiple paths together, without introducing unnecessary path
+// separators.
+// For example:
+//
+//  Arguments                  | JoinPath
+//  ---------------------------+----------
+//  '/foo', 'bar'              | /foo/bar
+//  '/foo/', 'bar'             | /foo/bar
+//  '/foo', '/bar'             | /foo/bar
+//
+// Usage:
+// string path = io::JoinPath("/mydir", filename);
+// string path = io::JoinPath(FLAGS_test_srcdir, filename);
+string JoinPath(StringPiece part1, StringPiece part2);
+
+// Return true if path is absolute.
+bool IsAbsolutePath(StringPiece path);
+
+// Returns the part of the path before the final "/".  If there is a single
+// leading "/" in the path, the result will be the leading "/".  If there is
+// no "/" in the path, the result is the empty prefix of the input.
+StringPiece Dirname(StringPiece path);
+
+// Returns the part of the path after the final "/".  If there is no
+// "/" in the path, the result is the same as the input.
+StringPiece Basename(StringPiece path);
+
+// Returns the part of the basename of path after the final ".".  If
+// there is no "." in the basename, the result is empty.
+StringPiece Extension(StringPiece path);
+
+}  // namespace io
+}  // namespace tensorflow
+
+#endif  // TENSORFLOW_LIB_IO_PATH_H_