From owner-freebsd-security Thu May 20 23:47:29 1999 Delivered-To: freebsd-security@freebsd.org Received: from xylan.com (postal.xylan.com [208.8.0.248]) by hub.freebsd.org (Postfix) with ESMTP id 4060814A2E for ; Thu, 20 May 1999 23:47:27 -0700 (PDT) (envelope-from wes@softweyr.com) Received: from mailhub.xylan.com by xylan.com (8.8.7/SMI-SVR4 (xylan-mgw 2.2 [OUT])) id XAA17414; Thu, 20 May 1999 23:46:50 -0700 (PDT) Received: from omni.xylan.com by mailhub.xylan.com (SMI-8.6/SMI-SVR4 (mailhub 2.1 [HUB])) id XAA22981; Thu, 20 May 1999 23:46:50 -0700 Received: from softweyr.com ([204.68.178.39]) by omni.xylan.com (4.1/SMI-4.1 (xylan engr [SPOOL])) id AA03739; Thu, 20 May 99 23:46:47 PDT Message-Id: <37450157.181A953@softweyr.com> Date: Fri, 21 May 1999 00:46:47 -0600 From: Wes Peters Organization: Softweyr LLC X-Mailer: Mozilla 4.5 [en] (X11; U; FreeBSD 3.1-RELEASE i386) X-Accept-Language: en Mime-Version: 1.0 To: Joel Maslak Cc: security@FreeBSD.ORG Subject: Re: Secure Deletion References: <3.0.6.32.19990520095507.00840010@india.wind-river.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Joel Maslak wrote: > > Let's keep standard BSD semantics here, please! > > As for "secure" deletion... Why doesn't someone just write a simple > user-space program to do that. True, it wouldn't handle calls to unlink(), > but one would think that someone could modify the library really quick > (provided no one does a system call directly, but uses the libc interface > instead). I think this would be much better for everyone involved. It'd be ever so much easier to do it with a MIB (kern.shred) or a filesystem superblock or mount-time option for somewhat finer control. In general, if you're worried enough about files to obliterate them on deletion, you want to do so to every file, so a MIB makes sense. -- "Where am I, and what am I doing in this handbasket?" Wes Peters Softweyr LLC http://www.softweyr.com/~softweyr wes@softweyr.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message