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SubjectRe: Proposal: restrict link(2)

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On Fri, 13 Dec 1996, Ion Badulescu wrote:

>
> On Fri, 13 Dec 1996, Theodore Y. Ts'o wrote:
>
> > Date: Fri, 13 Dec 1996 02:43:11 -0500 (EST)
> > From: Dan Merillat <Dan@merillat.org>
> >
> > Besides, by link()ing to a file you change it. And if you don't have the
> > ability to write to it, you should _NOT_ be able to change a file.
> > symlinks don't count, as they are just pointers to a file that may, or may
> > not exist. Hard links become the file itself.
> >
> > Incorrect. Being able to link to a file does not mean you can change
> > it.
>
> No, you can't change the data blocks. But you _will_ change the inode by
> incrementing the link count.
>
> I'm not saying that changing the link count is wrong by itself, as you can
> also change the atime by simply reading the file..
>
>
> Ionut
>
> --
> It is better to keep your mouth shut and be thought a fool,
> than to open it and remove all doubt.
>

Again I must point out that using link(2) changes nothing in the actual
_FILE_, which is the security concern. it still has the same mode and
owners. Nobody who couldn't read or write to it can, and nobody who can
can't. Its a non-issue.

--Deviant
PGP KeyID = E820F015 Fingerprint = 3D6AAB628E3DFAA9 F7D35736ABC56D39

The surest way to corrupt a youth is to instruct him to hold in higher
esteem those who think alike than those who think differently.
-- Nietzsche


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