Re: [RFC] new kernel syscall

Pavel Machek (pavel@bug.ucw.cz)
Tue, 20 Jul 1999 12:49:46 +0200


Hi!

> I want to make a new kernel syscall. Obviously, before doing the (trivial)
> work, I want to check it is considered a good idea.
>
> The syscall essentially exposes current->dumpable to userland. NAMES FOR
> THE SYSCALL ON A POSTCARD PLEASE.
>
> Why would you want do do this?
>
> Well, in userland, we are having to do a lot of second guessing of
> current->dumpable. If dumpable is FALSE, we need to restrict several
> things in the dynamic linker, and libc, for security reasons.

Yes, please. This was one of major reasons elfcap patch became a bit
ugly. We'll need that few months before we can put capabilities into
mainstream use.

> Comments please? A worthy 2.3 item?

YES.
Pavel

-- 
I'm really pavel@ucw.cz. Look at http://195.113.31.123/~pavel.  Pavel
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