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Date: Tue, 7 Nov 2000 12:58:15 +0200 (EET)
From: Catalin BOIE <util@deuroconsult.ro>
To: Michael Vines <mjvines@undergrad.math.uwaterloo.ca>
cc: Erik Mouw <J.A.K.Mouw@ITS.TUDelft.NL>, linux-kernel@vger.kernel.org
Subject: Re: Kernel hook for open
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On Mon, 6 Nov 2000, Michael Vines wrote:

> On Mon, 6 Nov 2000, Erik Mouw wrote:
> 
> > On Mon, Nov 06, 2000 at 10:11:11AM -0500, Michael Vines wrote:
> > > On Mon, 6 Nov 2000, Erik Mouw wrote:
> > > > Use LD_PRELOAD instead.
> > > 
> > > You could also write a simple kernel module that replaces the open system
> > > call.  See the Linux Kernel Module Programming Guide for details. 
> > > http://www.linuxdoc.org/guides.html
> > > 
> > > specifically http://www.linuxdoc.org/LDP/lkmpg/node20.html
> > 
> > Why difficult when it can be done easy? To test the Y2K readiness of
> > some programs (yeah, Y2K, remember?), I wrote a small library that
> > overloaded the time() and gettimeofday() syscalls in about 100 lines of
> > code.  No kernel modules needed, no root privileges needed, just set the
> > environment variable LD_PRELOAD and off you go.
> 
> Well the question was posted to the kernel mailing list and not the glibc
> mailing list after all :)
> 
> 	Michael
> 

Yes, you are right. It was my fault. I should have send my mail to both
kernel and glibc list.

I just want to intercept open call. That's all. I don't care much if I
must do a kernel module or I use PRELOAD. Probably is better to use
LD_PRELOAD.

Thank you all for your kindly help! You are great! All of you! Thanks!

---
Catalin(ux) BOIE
catab@deuroconsult.ro
A new Linux distribution: http://l13plus.deuroconsult.ro
http://www2.deuroconsult.ro/~catab

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