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#!/usr/bin/python
"""
Virt-factory backend code.
Copyright 2006, Red Hat, Inc
Michael DeHaan <mdehaan@redhat.com>
Scott Seago <sseago@redhat.com>
Adrian Likins <alikins@redhat.com>
This software may be freely redistributed under the terms of the GNU
general public license.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
import os
import string
import sys
import traceback
# this is kind of handy, so keep it around for now
# but we really need to fix out server side logging and error
# reporting so we don't need it
def trace_me():
x = traceback.extract_stack()
bar = string.join(traceback.format_list(x))
return bar
def daemonize(pidfile=None):
"""
Daemonize this process with the UNIX double-fork trick.
Writes the new PID to the provided file name if not None.
"""
print pidfile
pid = os.fork()
if pid > 0:
sys.exit(0)
os.setsid()
os.umask(0)
pid = os.fork()
if pid > 0:
if pidfile is not None:
open(pidfile, "w").write(str(pid))
sys.exit(0)
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