Subject: Re: Making setuid files immutable
To: Andrew Brown <>
From: Manuel Bouyer <>
List: tech-security
Date: 01/16/1999 03:27:31
On Jan 15, Andrew Brown wrote
> bzzt!  nope.  mv-ing the file would require a change to the inode,
> which ain't allowed.

Hum you're rigth. I didn't test it, I was sure moving a file did just change
the directory entry. Well, I was wrong :)

> of course...they could always move the entire directory...

And that's enouth, unless the parent directory is immutable too ...
Anyway, I think it's good practice to make directory immutable too when

Manuel Bouyer, LIP6, Universite Paris VI.