Native Messaging revert-revert

chrome/browser/extensions/api/messaging/native_process_launcher_posix.cc

Index: chrome/browser/extensions/api/messaging/native_process_launcher_posix.cc
diff --git a/chrome/browser/extensions/api/messaging/native_process_launcher_posix.cc b/chrome/browser/extensions/api/messaging/native_process_launcher_posix.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e7cbce78e994558082581c446518a6cfebe990ff
--- /dev/null
+++ b/chrome/browser/extensions/api/messaging/native_process_launcher_posix.cc
@@ -0,0 +1,58 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/api/messaging/native_process_launcher.h"
+
+#include "base/command_line.h"
+#include "base/eintr_wrapper.h"
+#include "base/file_util.h"
+#include "base/logging.h"
+#include "base/process_util.h"
+
+namespace extensions {
+
+bool NativeProcessLauncher::LaunchNativeProcess(
+    const FilePath& path,
+    base::ProcessHandle* native_process_handle,
+    NativeMessageProcessHost::FileHandle* read_file,
+    NativeMessageProcessHost::FileHandle* write_file) const {
+  base::FileHandleMappingVector fd_map;
+
+  int read_pipe_fds[2] = {0};
+  if (HANDLE_EINTR(pipe(read_pipe_fds)) != 0) {
+    LOG(ERROR) << "Bad read pipe";
+    return false;
+  }
+  file_util::ScopedFD read_pipe_read_fd(&read_pipe_fds[0]);
+  file_util::ScopedFD read_pipe_write_fd(&read_pipe_fds[1]);
+  fd_map.push_back(std::make_pair(*read_pipe_write_fd, STDOUT_FILENO));
+
+  int write_pipe_fds[2] = {0};
+  if (HANDLE_EINTR(pipe(write_pipe_fds)) != 0) {
+    LOG(ERROR) << "Bad write pipe";
+    return false;
+  }
+  file_util::ScopedFD write_pipe_read_fd(&write_pipe_fds[0]);
+  file_util::ScopedFD write_pipe_write_fd(&write_pipe_fds[1]);
+  fd_map.push_back(std::make_pair(*write_pipe_read_fd, STDIN_FILENO));
+
+  CommandLine line(path);
+  base::LaunchOptions options;
+  options.fds_to_remap = &fd_map;
+  if (!base::LaunchProcess(line, options, native_process_handle)) {
+    LOG(ERROR) << "Error launching process";
+    return false;
+  }
+
+  // We will not be reading from the write pipe, nor writing from the read pipe.
+  write_pipe_read_fd.reset();
+  read_pipe_write_fd.reset();
+
+  *read_file = *read_pipe_read_fd.release();
+  *write_file = *write_pipe_write_fd.release();
+
+  return true;
+}
+
+}  // namespace extensions