Re: Proposal: restrict link(2)

Illuminati Primus (
Fri, 13 Dec 1996 23:44:04 -0500 (EST)

On Sat, 14 Dec 1996, Alan Cox wrote:

> > Difficult, perhaps, but not impossible. Just program with a devious
> > mindset. In case of this particular problem, make sure that you don't
> > chown() the file, but rather open() it, fstat() it, stat() it, then fchown()
> > it. It can't get much safer than that.
> Linux 2.1.15 has the ability to pass secure access right information
> (userid etc) between processes over unix sockets. IMHO You can now build
> a client/server based unix setup for all the priviledged operations without
> a setuid binary on the system.

Wow.. How does this work? And where can I get more information about