dbus: add support for passing file descriptors

dbus/values_util.cc

Index: dbus/values_util.cc
diff --git a/dbus/values_util.cc b/dbus/values_util.cc
index e341ac235ce5dae8d60612ff1b4eddee933f8922..accf05ba218e21a33d1ae82965e0cc2580815c9f 100644
--- a/dbus/values_util.cc
+++ b/dbus/values_util.cc
@@ -163,6 +163,13 @@ Value* PopDataAsValue(MessageReader* reader) {
         result = Value::CreateStringValue(value.value());
       break;
     }
+#if defined(DBUS_TYPE_UNIX_FD)
+    case Message::UNIX_FD: {
+      // Cannot distinguish fd from an int at the moment

[keybuk, 2012/03/27 22:36:35]

Sure you can, it's a dbus::FileDescriptor now ;-)

[Sam Leffler, 2012/03/27 23:20:40]

Previously I took the fd and stashed it in an integer Value but then the caller
can't distinguish it from another integer Value. I'm not sure it's worth adding
it right now but rather than explicitly leak the fd I changed this code.

[satorux1, 2012/03/28 00:32:43]

NOTREACHED() sounds reasonable to me. 

+      NOTREACHED();
+      break;
+    }
+#endif
     case Message::ARRAY: {
       MessageReader sub_reader(NULL);
       if (reader->PopArray(&sub_reader)) {