libnl.py 文件源码

def nl_sendmsg(sock,msg,override=False):
    """
      sends msg to kernel
      :param sock: netlink socket
      :param msg: nlmsg stream
      :param override: if True will keep the message's pid and seq. This can
      be used for testing
    """
    try:
        # change the msg's pid & seq to that of the sockets prior to sending &
        # set the ack flag - I can't figure how to tell in recv if an ack was
        # requested or not so I force an ACK here
        if not override:
            msg.pid = sock.pid
            msg.seq = sock.seq
        msg.flags = msg.flags | nlh.NLM_F_ACK
        sent = sock.send(msg.tostream())
        if sent != msg.len: raise error(errno.EBADMSG,"Message sent incomplete")
    except socket.error as e:
        raise error(errno.ECOMM, e)
    except AttributeError:
        raise error(errno.ENOTSOCK,"Invalid netlink socket")