From 9e7229321a8a8c5314c1fd1198eb27c0460b025e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Mon, 21 Oct 2013 17:35:57 +0000
Subject: [PATCH] GUIdocs changed

update msg_hdr struct
---
 GUIdocs.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/GUIdocs.md b/GUIdocs.md
index 0fc0b72d..983be81e 100644
--- a/GUIdocs.md
+++ b/GUIdocs.md
@@ -103,6 +103,12 @@ Each message starts with the following header
 struct msghdr {   
         uint32_t type;
         uint32_t window;
+        /* This field is intended for use by gui_agents to skip unknown
+         * messages from the (trusted) guid. Guid, on the other hand,
+         * should never rely on this field to calculate the actual len of
+         * message to be read, as the (untrusted) agent can put here
+         * whatever it wants! */
+        uint32_t untrusted_len;
 };
 ```