This pacth clean up vnc options preparing code for xen-upstream-qemu.
Add password option which allows you to use vncpasswd auth by xl.


Signed-off-by: Zhou Peng <zhoupeng@xxxxxxxxxxxxxxx>

tools/libxl: prepare vnc options for dm_args in libxl__build_device_model_args_new

diff -r 569abaf2cc12 tools/libxl/libxl_dm.c
--- a/tools/libxl/libxl_dm.c	Tue Apr 19 13:17:14 2011 +0800
+++ b/tools/libxl/libxl_dm.c	Wed Apr 20 13:47:42 2011 +0800
@@ -208,11 +208,7 @@ static char ** libxl__build_device_model
     if (info->vnc || info->vncdisplay || info->vnclisten || info->vncunused) {
         int display = 0;
         const char *listen = "127.0.0.1";
-
-        if (info->vncpasswd && info->vncpasswd[0]) {
-            assert(!"missing code for supplying vnc password to qemu");
-        }
-        flexarray_append(dm_args, "-vnc");
+        char *vncoptions = NULL;
 
         if (info->vncdisplay) {
             display = info->vncdisplay;
@@ -224,13 +220,17 @@ static char ** libxl__build_device_model
         }
 
         if (strchr(listen, ':') != NULL)
-            flexarray_append(dm_args, 
-                    libxl__sprintf(gc, "%s%s", listen,
-                        info->vncunused ? ",to=99" : ""));
+            vncoptions = libxl__sprintf(gc, 
+                             "%s%s", listen, info->vncunused ? ",to=99" : "");
         else
-            flexarray_append(dm_args, 
-                    libxl__sprintf(gc, "%s:%d%s", listen, display,
-                        info->vncunused ? ",to=99" : ""));
+            vncoptions = libxl__sprintf(gc, "%s:%d%s", listen, display,
+                                        info->vncunused ? ",to=99" : "");
+
+        if (info->vncpasswd && info->vncpasswd[0])
+            vncoptions = libxl__sprintf(gc, "%s,password", vncoptions);
+
+        flexarray_append(dm_args, "-vnc");
+        flexarray_append(dm_args, vncoptions);
     }
     if (info->sdl) {
         flexarray_append(dm_args, "-sdl");