From 3ec5aa31557a5a670c0b5e45f01515fcbad9cc8e Mon Sep 17 00:00:00 2001
From: Jaime Melis <j.melis@fdi.ucm.es>
Date: Thu, 12 Jan 2012 18:34:52 +0100
Subject: [PATCH] Bug #1046: Fix detection of hypervisor. A regular user can't
 read /proc/xen/capabilities

---
 src/vnm_mad/remotes/OpenNebulaNetwork.rb | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/vnm_mad/remotes/OpenNebulaNetwork.rb b/src/vnm_mad/remotes/OpenNebulaNetwork.rb
index 621789e6b7..349abcd8d7 100644
--- a/src/vnm_mad/remotes/OpenNebulaNetwork.rb
+++ b/src/vnm_mad/remotes/OpenNebulaNetwork.rb
@@ -118,9 +118,8 @@ class OpenNebulaNetwork
     def detect_hypervisor
         lsmod       = `#{COMMANDS[:lsmod]}`
         xen_file    = "/proc/xen/capabilities"
-        xen_content = "control_d"
 
-        if File.readable?(xen_file) and File.read(xen_file).strip == xen_content
+        if File.exists?(xen_file)
             "xen"
         elsif lsmod.match(/kvm/)
             "kvm"