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diff --git a/utils/process/child.ipp b/utils/process/child.ipp
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+// Copyright 2010 The Kyua Authors.
+// 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.
+// * Neither the name of Google Inc. nor the names of its contributors
+//   may be used to endorse or promote products derived from this software
+//   without specific prior written permission.
+//
+// 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.
+
+#if !defined(UTILS_PROCESS_CHILD_IPP)
+#define UTILS_PROCESS_CHILD_IPP
+
+#include <cstdlib>
+
+#include "utils/process/child.hpp"
+
+namespace utils {
+namespace process {
+
+
+/// Spawns a new subprocess and redirects its stdout and stderr to files.
+///
+/// If the subprocess cannot be completely set up for any reason, it attempts to
+/// dump an error message to its stderr channel and it then calls std::abort().
+///
+/// \param hook The function to execute in the subprocess.  Must not return.
+/// \param stdout_file The name of the file in which to store the stdout.
+/// \param stderr_file The name of the file in which to store the stderr.
+///
+/// \return A new child object, returned as a dynamically-allocated object
+/// because children classes are unique and thus noncopyable.
+///
+/// \throw process::system_error If the process cannot be spawned due to a
+///     system call error.
+template< typename Hook >
+std::auto_ptr< child >
+child::fork_files(Hook hook, const fs::path& stdout_file,
+                  const fs::path& stderr_file)
+{
+    std::auto_ptr< child > child = fork_files_aux(stdout_file, stderr_file);
+    if (child.get() == NULL) {
+        try {
+            hook();
+            std::abort();
+        } catch (const std::runtime_error& e) {
+            detail::report_error_and_abort(e);
+        } catch (...) {
+            detail::report_error_and_abort();
+        }
+    }
+
+    return child;
+}
+
+
+/// Spawns a new subprocess and multiplexes and captures its stdout and stderr.
+///
+/// If the subprocess cannot be completely set up for any reason, it attempts to
+/// dump an error message to its stderr channel and it then calls std::abort().
+///
+/// \param hook The function to execute in the subprocess.  Must not return.
+///
+/// \return A new child object, returned as a dynamically-allocated object
+/// because children classes are unique and thus noncopyable.
+///
+/// \throw process::system_error If the process cannot be spawned due to a
+///     system call error.
+template< typename Hook >
+std::auto_ptr< child >
+child::fork_capture(Hook hook)
+{
+    std::auto_ptr< child > child = fork_capture_aux();
+    if (child.get() == NULL) {
+        try {
+            hook();
+            std::abort();
+        } catch (const std::runtime_error& e) {
+            detail::report_error_and_abort(e);
+        } catch (...) {
+            detail::report_error_and_abort();
+        }
+    }
+
+    return child;
+}
+
+
+}  // namespace process
+}  // namespace utils
+
+#endif  // !defined(UTILS_PROCESS_CHILD_IPP)