Re: Syscall number allocation

From: H. Peter Anvin (hpa@zytor.com)
Date: Fri Jun 02 2000 - 20:19:27 EST


Followup to: <ABSB4EvqkU@khim.sch57.msk.ru>
By author: "Khimenko Victor" <khim@sch57.msk.ru>
In newsgroup: linux.dev.kernel
>
> In <20000602164716.D2893@mclinux.com> Josh Huber (huber@missioncriticallinux.com) wrote:
> > Is there some sort of precedent/procedure for reserving syscall table
> > entries?
>
> Very few precedents. No procedure (not since nobody setuped web server
> with database but since syscalls should not be added without deep need).
> I can recall just one: streams syscalls. So it's
> a) Possible (= was done at least once before)
> b) Very hard (as there are VERY few such syscalls)
>

Actually, the "procedure" is to convince Linus to let you reserve a
syscall number; he will put it in the kernel as unimplemented. It has
been done, I belive, twice: once for afs and once for STREAMS.

        -hpa

-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."

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