ranger/ext/popen_forked.py


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# Copyright (C) 2012-2013  Roman Zimbelmann <hut@lavabit.com>
# This software is distributed under the terms of the GNU GPL version 3.

import os
import subprocess

def Popen_forked(*args, **kwargs):
    """
    Forks process and runs Popen with the given args and kwargs.

    Returns True if forking succeeded, otherwise False.
    """
    try:
        pid = os.fork()
    except OSError:
        return False
    if pid == 0:
        os.setsid()
        kwargs['stdin'] = open(os.devnull, 'r')
        kwargs['stdout'] = kwargs['stderr'] = open(os.devnull, 'w')
        subprocess.Popen(*args, **kwargs)
        os._exit(0)
    else:
        os.wait()
    return True