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[Xen-devel] [PATCH][VT]Don't leave vncviewer processes running if xm create fails



this patch kill the created vncviewer process if xm create fails.

Don't leave vncviewer processes running if xm create fails

Signed-off-by: Edwin Zhai <edwin.zhai@xxxxxxxxx>
Signed-off-by: Arun Sharma <arun.sharma@xxxxxxxxx>

--- a/tools/python/xen/xm/create.py     Wed Aug 10 18:44:42 2005
+++ b/tools/python/xen/xm/create.py     Thu Aug 11 18:44:59 2005
@@ -592,9 +592,14 @@
         return d
     return None
 
+vncpid = None
+
 def spawn_vnc(display):
-    os.system("vncviewer -log *:stdout:0 -listen %d &" %
-              (VNC_BASE_PORT + display))
+    vncargs = (["vncviewer" + "-log", "*:stdout:0",
+            "-listen", "%d" % (VNC_BASE_PORT + display) ])
+    global vncpid    
+    vncpid = os.spawnvp(os.P_NOWAIT, "vncviewer", vncargs)
+
     return VNC_BASE_PORT + display
     
 def preprocess_vnc(opts, vals):
@@ -639,6 +644,9 @@
         else:
             dominfo = server.xend_domain_create(config)
     except XendError, ex:
+        import signal
+        if vncpid:
+            os.kill(vncpid, signal.SIGKILL)
         opts.err(str(ex))
 
     dom = sxp.child_value(dominfo, 'name')
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