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Re: makefs, hardlink and setuid
On Mon, Mar 11, 2013 at 07:19:07PM +0200, Alan Barrett wrote:
> On Mon, 11 Mar 2013, Emmanuel Dreyfus wrote:
> >I am experimenting with crunchgen, and found an odd thing with
> >makefs: it seems unable to set a setuid bit on a binary that
> >has more than 1one link.
> If a binary has multiple links, then they all share the same
> inode, and thus share the same permission bits. You can set the
> setuid bit on all or none of the links, not on only some of them.
You can use a simple suid wrapper program (since suid shell scripts
aren't usually enabled).
Don't make it too generous though!
David Laight: david%l8s.co.uk@localhost
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