Re: Secure deletion

Jeffrey B. Siegal (jbs@aimnet.com)
Fri, 24 Jul 1998 07:10:09 -0700


Tom Vier wrote:

> > > unless, you use fcntl to get an exclusive lock on file, which is what
> > > my program (which i'm finishing up right now) does.
> >
> > Aren't those discretionary locks?
>
> if you set the sgid bit and clear the group execute bit, then it's
> mandatory.

I think you can't do that unless you own the file.

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