Subject: Re: PROT_EXEC mappings of vnodes -> VTEXT
To: Thor Lancelot Simon <>
From: Jason R Thorpe <>
List: tech-kern
Date: 10/30/2001 07:15:09
On Tue, Oct 30, 2001 at 10:06:57AM -0500, Thor Lancelot Simon wrote:

 > I would like to point out that were my suggestion of only allowing
 > mappings of files *with execute permission* to be set PROT_EXEC
 > implemented, this problem (user can make file read-only by mapping
 > it PROT_EXEC) would not exist.

Yes, we know, but unfortunately our world would break in other
spectacular ways since we would be the only Unix system to enforce
such a rule.

        -- Jason R. Thorpe <>