[lkml]   [2002]   [Oct]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
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
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:29    [W:0.136 / U:1.036 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site