[login_manager] Code to add the owner to the whitelist in a device policy

system_utils.h

 // Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef LOGIN_MANAGER_SYSTEM_UTILS_H_
 #define LOGIN_MANAGER_SYSTEM_UTILS_H_
 
+#include <dbus/dbus.h>
+#include <dbus/dbus-glib.h>
+#include <glib.h>
 #include <unistd.h>
 #include <string>
 
 #include <base/basictypes.h>
 #include <base/stringprintf.h>
+#include <chromeos/dbus/service_constants.h>
 
 class FilePath;
 
 namespace login_manager {
 class SystemUtils {
  public:
   SystemUtils();
   virtual ~SystemUtils();
 
   // Sends |signal| to |pid|, with uid and euid set to |owner|.
@@ skipping 32 matching lines @@
   //                API out of the session_manager.
   // http://code.google.com/p/chromium-os/issues/detail?id=5929
   //
   // Sends |signal_name| to power manager.
   virtual void SendSignalToPowerManager(const char* signal_name);
 
   // Makes a best-effort attempt to append |msg| to the system log that is
   // persisted across stateful partition wipes.
   virtual void AppendToClobberLog(const char* msg) const;
 
+  // Initializes |error| with |code| and |message|.
+  virtual void SetGError(GError** error,
+                         ChromeOSLoginError code,
+                         const char* message);
+
+  // Initializes |error| with |code| and |message|.
+  virtual void SetAndSendGError(ChromeOSLoginError code,
+                                DBusGMethodInvocation* context,
+                                const char* message);
+
  private:
   // If this file exists on the next boot, the stateful partition will be wiped.
   static const char kResetFile[];
 
   // Sends |signal_name| to |interface, optionally adding |payload|
   // as an arg if it is not NULL.
   static void SendSignalTo(const char* interface,
                            const char* signal_name,
                            const char* payload);
 
   DISALLOW_COPY_AND_ASSIGN(SystemUtils);
 };
 }  // namespace login_manager
 
 #endif  // LOGIN_MANAGER_SYSTEM_UTILS_H_