[NaCl SDK] Enable select/poll on TTY nodes.

native_client_sdk/src/libraries/nacl_io/mount_node_char.h

Index: native_client_sdk/src/libraries/nacl_io/mount_node_char.h
diff --git a/native_client_sdk/src/libraries/nacl_io/mount_node_char.h b/native_client_sdk/src/libraries/nacl_io/mount_node_char.h
index 48ad86fc65ed60001fee3101110851f84b72f7c0..ebb86166c473525e12ac239d6d9358fda07d0fd5 100644
--- a/native_client_sdk/src/libraries/nacl_io/mount_node_char.h
+++ b/native_client_sdk/src/libraries/nacl_io/mount_node_char.h
@@ -14,6 +14,10 @@ class MountNodeCharDevice : public MountNode {
   explicit MountNodeCharDevice(Mount* mount) : MountNode(mount) {
     stat_.st_mode = S_IFCHR;
   }
+
+  virtual uint32_t GetEventStatus() {
+    return 0;

[binji, 2013/08/20 18:26:49]

why?

[Sam Clegg, 2013/08/20 19:09:36]

Unlike regular files CharDevices are not always
readable or writable.   

+  }
 };
 
 }