Re: [1/1] connector: Kernel connector - userspace <-> kernelspace "linker".

From: Luis R. Rodriguez (mcgrof_at_studorgs.rutgers.edu)
Date: 09/24/04

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    Date:	Fri, 24 Sep 2004 01:48:44 -0400
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>

    On Fri, Sep 24, 2004 at 07:40:32AM +0400, Evgeniy Polyakov wrote:
    > On Fri, 2004-09-24 at 01:54, Luis R. Rodriguez wrote:
    > > RFC:
    > >
    > > Can and should we work towards using this as interface for drivers that
    > > need callbacks from an external (closed source) library/HAL?
    >
    > As I mentioned to Richard Jonson, it can be considered as
    > ioctl. ioctl-ng!
    > Unified interface (as ioctl) can be used for any type of modules.
    > It is just a bit extended ioctl :)
    >
    > And _yes_, it can be used to turn on/off binary-only callbacks.
    > Remember pwc - closed part can register callback and open part can
    > send message, or even closed part can register notification when
    > open part registers itself and begin to "trash the kernel".
    >
    > I understand that it is not right way to include it is into the kernel,
    > but I personally do not understand how it is different
    > from just extended ioctl. It was designed to be usefull and convenient,
    > and it is.
    >
    > BTW, any binary-only module can _itself_ create netlink socket
    > with input callback. And that is all - it will be absolutely
    > the same as above.
    >
    > One may consider connector as yet-another-netlink-helper.
    >

    Eh. I'm just wondering if there's any *right* way of using binary
    callbacks on a linux driver so that it doesn't *taint* and possibly
    *trash it*, as you said. I was wondering if perhaps through the
    connector we could somehow protect the kernel of possibly ill-behaved callbacks.

    Comments?

            Luis 

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