From owner-freebsd-hackers  Fri Jul 23 22:35: 4 1999
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Date: Sat, 24 Jul 1999 15:02:55 +0930
From: Greg Lehey <grog@lemis.com>
To: jkoshy@FreeBSD.ORG
Cc: freebsd-hackers@FreeBSD.ORG
Subject: Re: deny ktrace without read permissions?
Message-ID: <19990724150255.S84734@freebie.lemis.com>
References: <199907240512.WAA19120@freefall.freebsd.org>
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In-Reply-To: <199907240512.WAA19120@freefall.freebsd.org>; from jkoshy@FreeBSD.ORG on Fri, Jul 23, 1999 at 10:12:29PM -0700
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On Friday, 23 July 1999 at 22:12:29 -0700, jkoshy@FreeBSD.ORG wrote:
> 
> 
> PR bin/3546 asks that `ktrace(1)' not be allowed on files that do not have
> read permissions for the user attempting to execute them.
> 
> The intent of this change is to prevent a user from seeing how an
> executable with '--x--x--x' perms works by ktrace'ing its execution.  
> 
> My question to the -hackers is: is this a useful semantic?

Yes, I think so.

> Would it break anything if added?

Not that I can think of.  But that doesn't mean anything.

Greg
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