mbootuz.py 文件源码

def mounted_at(dev='', loopback=''):
    df = subprocess.check_output(['df'])
    if dev:
    fn = dev[dev.rfind('/')+1:]
    dev_or_loop = dev
    m = re.search('^' + dev + r'\s.*\s(\S+)$', df, flags=re.MULTILINE)
    elif loopback:
    dev_or_loop = loopback
    fn = loopback[loopback.rfind('/')+1:]
    m = re.search(r'\s(/lib/live/\S*' + fn + ')$', df, flags=re.MULTILINE)
    else:
    sys.exit('mounted_at() needs at least one arg')
    if (m):
    return m.group(1)
    else:
        target_mp = '/tmp/mbootuz-' + str(os.getpid()) + '-' + fn
        subprocess.call(['mkdir', target_mp])
        try:
            subprocess.check_output(['mount', dev_or_loop, target_mp])
        except subprocess.CalledProcessError as e:
            subprocess.call(['rmdir', target_mp])
            sys.exit('mount failure [' + e.output +
                '], mbootuz aborted')
    atexit.register(cleanup, target_mp)
        return target_mp