From owner-freebsd-questions@FreeBSD.ORG Tue Mar 1 09:29:03 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4560D16A4CE for ; Tue, 1 Mar 2005 09:29:03 +0000 (GMT) Received: from obsecurity.dyndns.org (CPE0050040655c8-CM00111ae02aac.cpe.net.cable.rogers.com [69.199.47.57]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0393943D48 for ; Tue, 1 Mar 2005 09:29:03 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 061EF512A7; Tue, 1 Mar 2005 01:29:01 -0800 (PST) Date: Tue, 1 Mar 2005 01:29:01 -0800 From: Kris Kennaway To: Ted Mittelstaedt Message-ID: <20050301092901.GB95093@xor.obsecurity.org> References: <20050228201308.GC70059@xor.obsecurity.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="f2QGlHpHGjS2mn6Y" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i cc: FreeBSD questions cc: "Loren M. Lang" cc: Rob cc: Kris Kennaway Subject: Re: /dev/io , /dev/mem : only used by Xorg? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Mar 2005 09:29:03 -0000 --f2QGlHpHGjS2mn6Y Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Mar 01, 2005 at 12:06:11AM -0800, Ted Mittelstaedt wrote: > >> Another strange thing is that /dev/random should block when it > >> runs out of entropy - it doesen't seem to do so, however. And the > >> device doesen't seem to gain entropy that quickly. > > > > No, it should not block because it's not defined to block >=20 > In FreeBSD >=20 > > and that > > would be a bad interface anyway. >=20 > The "u" in /dev/urandom means unblocking. It also means "return stuff even when you have no more entropy". Can't get there from here. Kris --f2QGlHpHGjS2mn6Y Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFCJDXdWry0BWjoQKURAqD5AJ9AitLLdhXqRWujQUFSDLJuhmC2dwCgzo+B d85JPskK39is5J1B7hFpUpY= =EwNW -----END PGP SIGNATURE----- --f2QGlHpHGjS2mn6Y--