From: "Miquel van Smoorenburg" <miquels@cistron.nl>
To: linux-kernel@vger.kernel.org
Subject: Re: System call wrapping
Date: Mon, 21 Oct 2002 18:16:10 +0000 (UTC) [thread overview]
Message-ID: <ap1g9a$pso$1@ncc1701.cistron.net> (raw)
In-Reply-To: 1035222121.1063.20.camel@pc177
In article <1035222121.1063.20.camel@pc177>,
Henrý Þór Baldursson <henry@f-prot.com> wrote:
>In our Windows product we have something called "Realtime protector"
>which monitors file access on Windows running machines and scans them
>before allowing access.
>
>We now want, due to customer demand, to supply our Linux users with
>similar functionality, and we've created a 2.4.x kernel module which
>wrapped the open system call by means of overwriting
>sys_call_table[__NR_open].
What is wrong with a preloaded library (by means of /etc/ld.so.preload)
that intercepts open at the library level (and calls the real open()
using RLTD_NEXT) ? Just let it talk over a unix socket to your
scanner server.
Mike.
next prev parent reply other threads:[~2002-10-21 18:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-21 17:42 System call wrapping Henrý Þór Baldursson
2002-10-21 18:12 ` Alan Cox
2002-10-21 18:16 ` Miquel van Smoorenburg [this message]
2002-10-21 18:33 ` Karim Yaghmour
2002-10-22 14:02 ` Rogier Wolff
2002-10-21 20:14 ` Rik van Riel
2002-10-21 20:33 ` Lucio Maciel
2002-10-22 5:19 ` Greg KH
2002-10-22 1:01 ` jw schultz
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