+
+# after http://www.erlenstar.demon.co.uk/unix/faq_2.html
+def daemon():
+ """Daemonize the current process."""
+ if os.fork() != 0: os._exit(0)
+ os.setsid()
+ if os.fork() != 0: os._exit(0)
+ os.umask(0)
+ devnull = os.open(os.devnull, os.O_RDWR)
+ os.dup2(devnull, 0)
+ # xxx fixme - this is just to make sure that nothing gets stupidly lost - should use devnull
+ crashlog = os.open('/var/log/geni.daemon', os.O_RDWR | os.O_APPEND | os.O_CREAT, 0644)
+ os.dup2(crashlog, 1)
+ os.dup2(crashlog, 2)
+