Re: [RFC] dynamic syscalls revisited
From: Steven Rostedt
Date: Tue Dec 14 2004 - 22:36:57 EST
On Tue, 2004-12-14 at 21:14 -0500, Steven Rostedt wrote:
> On Tue, 2004-12-14 at 20:14 -0300, Werner Almesberger wrote:
> > Steven Rostedt wrote:
> > > It can be easier to send the wrong command to a device, or even the
> > > wrong device than to use a wrong system call.
> > So invent some /dev/syscall/<syscall-device-name> and you've reduced
> > this to good old clashes in a flat name space. You can hide all the
> > ugliness, sanity checking, etc. in a library.
> Already working on something. But I was a little distracted by some real
> work :-) But I'll have a little device driver that can implement
> dynamic system calls soon, and a library that will hide the real
> > I also think that a more direct approach for dynamic syscalls would
> > be nice, but the current status quo is far from unbearable.
OK, my first attempt at a hack is done. If anyone wants a quick and
nasty dynamic system call interface, here it is. It should work on any
arch, although it is not user space thread safe (SMP safe though). It
dynamically creates a device that implements system calls through it.
It's a hack, but it gets around the kernel maintainers from forbidding
dynamic system calls.
get it here: http://home.stny.rr.com/rostedt/dynamic/dsyscall_dev.tgz
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