From owner-freebsd-hackers Mon Jun 19 13:37:41 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id NAA09760 for hackers-outgoing; Mon, 19 Jun 1995 13:37:41 -0700 Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id NAA09749 for ; Mon, 19 Jun 1995 13:37:36 -0700 Received: from sax.sax.de by irz301.inf.tu-dresden.de with SMTP (5.67b+/DEC-Ultrix/4.3) id AA12703; Mon, 19 Jun 1995 22:37:32 +0200 Received: by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id WAA24298 for freebsd-hackers@freebsd.org; Mon, 19 Jun 1995 22:37:31 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.6.11/8.6.9) id VAA11861 for freebsd-hackers@freebsd.org; Mon, 19 Jun 1995 21:58:23 +0200 From: J Wunsch Message-Id: <199506191958.VAA11861@uriah.heep.sax.de> Subject: Re: freebsd and memory To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Mon, 19 Jun 1995 21:58:22 +0200 (MET DST) Reply-To: freebsd-hackers@freebsd.org (FreeBSD hackers) In-Reply-To: <9506191816.AA04427@sirius.physik.fu-berlin.de> from "Thomas Graichen" at Jun 19, 95 08:16:09 pm Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Content-Length: 581 Sender: hackers-owner@freebsd.org Precedence: bulk As Thomas Graichen wrote: > > * is FreeBSD using demand paging for it's shared libs - i don't think ... I think there's now nothing at all that's not demand-paged, except accessing the raw device. I have no idea however, why it's possible to overwrite a shlib. IMHO the vnode should be locked as BUSY, like any executable. (Well, Terry, it actually should be pre-faulted to swap. :-) John didn't mention this in his reply, though. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)