Re: [PATCH 4/6] BC: user interface (syscalls)

Andrew Morton
2006-08-24T04:37:07Z

On Wed, 23 Aug 2006 18:29:42 +0100
Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:

> Ar Mer, 2006-08-23 am 09:50 -0700, ysgrifennodd Andrew Morton:
> > On Wed, 23 Aug 2006 17:43:16 +0400
> > Kirill Korotaev <dev@sw.ru> wrote:
> >
> > > +asmlinkage long sys_set_bclimit(uid_t id, unsigned long resource,
> > > + unsigned long *limits)
> >
> > I'm still a bit mystified about the use of uid_t here. It's not a uid, is
> > it?
>
> Its a uid_t because of setluid() and twenty odd years of existing unix
> practice.
>

I don't understand. This number is an identifier for an accounting
container, which was somehow dreamed up by userspace.

AFAICT it is wholly unrelated to user ID's.

(How does userspace avoid collisions, btw?)