From: "Ragnar Kjørstad" <kernel@ragnark.vestdata.no>
To: Libor Vanek <libor@conet.cz>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Syscall table AKA hijacking syscalls
Date: Fri, 2 Jan 2004 14:57:13 +0100 [thread overview]
Message-ID: <20040102135713.GA9935@vestdata.no> (raw)
In-Reply-To: <3FF56B1C.1040308@conet.cz>
On Fri, Jan 02, 2004 at 01:59:08PM +0100, Libor Vanek wrote:
> Hi,
> I'm writing some project which needs to hijack some syscalls in VFS
> layer. AFAIK in 2.6 is this "not-wanted" solution (even that there are
> some very nasty ways of doing it - see
> http://mail.nl.linux.org/kernelnewbies/2002-12/msg00266.html )
>
> Also I've found out that Linus stated that intercepting syscalls is "bad
> thing" (load module a, load module b, unload module b => crash) but I
> think that there are some very good reasons (and ways) to do it (see
> http://syscalltrack.sourceforge.net ). My main reason to do it is that I
> want my GPLed module to be able to modify some VFS syscalls without
> patching and recompiling whole kernel and rebooting the machine.
As part of the openxdsm-project we wrote an syscall-intercept module
that "solves" the (load module a, load module b, unload module b =>
crash) part by providing a common infrastructure for intercepting
syscalls.
It's available at:
http://cvs.sourceforge.net/viewcvs.py/openxdsm/openxdsm/eventmodule/module/events.c?rev=1.1.1.1&view=auto
--
Ragnar Kjørstad
next prev parent reply other threads:[~2004-01-02 13:57 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-02 12:59 Syscall table AKA hijacking syscalls Libor Vanek
2004-01-02 13:08 ` Matti Aarnio
2004-01-02 13:26 ` Libor Vanek
2004-01-02 13:57 ` Ragnar Kjørstad [this message]
2004-01-02 15:39 ` Libor Vanek
2004-01-02 16:42 ` Jörn Engel
2004-01-02 15:12 ` Muli Ben-Yehuda
2004-01-02 15:38 ` Libor Vanek
2004-01-02 16:00 ` Christoph Hellwig
2004-01-02 16:35 ` Jörn Engel
2004-01-02 16:59 ` Libor Vanek
2004-01-02 18:04 ` Jörn Engel
2004-01-02 18:58 ` Libor Vanek
2004-01-02 19:15 ` Arjan van de Ven
2004-01-02 19:23 ` Libor Vanek
2004-01-02 19:18 ` Jörn Engel
2004-01-02 19:37 ` Libor Vanek
2004-01-02 19:56 ` Jörn Engel
2004-01-07 9:28 ` stefan.eletzhofer
2004-01-02 23:35 ` Anton Blanchard
2004-01-02 23:46 ` Libor Vanek
2004-01-03 15:41 ` Helge Hafting
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