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    SubjectRe: export of sys_call_table
    On Thu, Oct 03, 2002 at 03:39:43PM -0600, Brian F. G. Bidulock wrote:
    > I see that RH, in their infinite wisdom, have seen fit to remove
    > the export of sys_call_table in 8.0 kernels breaking any loadable
    > modules that wish to implement non-implemented system calls such
    > as LiS's or iBCS implementation of putmsg/getmsg.
    > sys_call_table is exported in current 2.4 and 2.5 kernels.

    As of 2.5.40bk it is now also not exported, which is a good thing.

    > Until now, loadable modules have been able to just overwrite
    > the non implemented point in the sys_call_table when they load
    > and putting it back when they unload. There is no mechanism
    > for registering system calls.

    That's a racy, easily breakable thing to do. Don't do it.

    > What is the take on this?

    It is a good thing that the sys_call_table is now not exported.


    greg k-h
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