Re: makefs, hardlink and setuid

[Alan Barrett <apb%cequrux.com@localhost>]

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.

--apb (Alan Barrett)