Retrieve the logfile name

def _default_logfile(exe_name):
    '''
    Retrieve the logfile name
    '''
    if salt.utils.platform.is_windows():
        tmp_dir = os.path.join(__opts__['cachedir'], 'tmp')
        if not os.path.isdir(tmp_dir):
            os.mkdir(tmp_dir)
        logfile_tmp = tempfile.NamedTemporaryFile(dir=tmp_dir,
                                                  prefix=exe_name,
                                                  suffix='.log',
                                                  delete=False)
        logfile = logfile_tmp.name
        logfile_tmp.close()
    else:
        logfile = salt.utils.path.join(
            '/var/log',
            '{0}.log'.format(exe_name)
        )

    return logfile