From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Marczykowski <marmarek@mimuw.edu.pl>
Subject: [PATCH 08 of 10] xen.lowlevel.xl: Return None on empty
	domain name
Date: Fri, 03 Jun 2011 00:35:38 +0200
Message-ID: <d03bd7a830bff8162b6b.1307054138@devel14>
References: <patchbomb.1307054130@devel14>
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# HG changeset patch
# User Marek Marczykowski <marmarek@mimuw.edu.pl>
# Date 1306963128 -7200
# Node ID d03bd7a830bff8162b6b0564d27b3f36ca52d8bb
# Parent  6811aa543e69379557ff7391ea3db8a5e7f7dde0
xen.lowlevel.xl: Return None on empty domain name

Previously PyString_FromString(NULL) was called, which caused assertion
failure.

Signed-off-by: Marek Marczykowski <marmarek@mimuw.edu.pl>

diff --git a/tools/python/xen/lowlevel/xl/xl.c b/tools/python/xen/lowlevel/xl/xl.c
--- a/tools/python/xen/lowlevel/xl/xl.c
+++ b/tools/python/xen/lowlevel/xl/xl.c
@@ -418,8 +418,11 @@
         return NULL;
 
     domname = libxl_domid_to_name(&self->ctx, domid);
-    ret = PyString_FromString(domname);
-    free(domname);
+    if (domname) {
+        ret = PyString_FromString(domname);
+        free(domname);
+    } else
+        return Py_None;
 
     return ret;
 }