Re: A variant of mlockall()

From: Lorenzo Allegrucci (lenstra@tiscalinet.it)
Date: Sat May 20 2000 - 08:00:02 EST


On 20/05/00 00:30, Igmar Palsenberg wrote:
> On Fri, 19 May 2000, Lorenzo Allegrucci wrote:
>
> >
> > Is there a simple and natural way to lock memory of a process
> > from another process?
> > I mean, POSIX1.b standard mlockall() does not provide a pid selection.
> > You can only use it from inside the process you want to lock memory.
> > Wouldn't be useful a mlockall(int flags, int pid) ?
>
> It's a security risk, and I don't see how it is usefull.

Why?
You can restrict mlockall() between processes with the same uid.
Where is the security risk?
I think it is a flexible solution to control memory locking from
another process without to apply to tricks.
A way for dynamically enable (and disable too) memory locking
to a process.

-- 
Lorenzo

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