From owner-freebsd-arch@FreeBSD.ORG Mon Dec 13 22:09:28 2004 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9CCE416A4D0 for ; Mon, 13 Dec 2004 22:09:28 +0000 (GMT) Received: from zircon.seattle.wa.us (dsl231-043-165.sea1.dsl.speakeasy.net [216.231.43.165]) by mx1.FreeBSD.org (Postfix) with SMTP id 052A643D64 for ; Mon, 13 Dec 2004 22:09:28 +0000 (GMT) (envelope-from joe@zircon.seattle.wa.us) Received: (qmail 64653 invoked from network); 13 Dec 2004 22:10:03 -0000 Received: from localhost (HELO localhost.zircon.seattle.wa.us) (127.0.0.1) by localhost with SMTP; 13 Dec 2004 22:10:03 -0000 From: Joe Kelsey To: arch@freebsd.org, hackers@freebsd.org Content-Type: text/plain Date: Mon, 13 Dec 2004 14:10:03 -0800 Message-Id: <1102975803.30309.196.camel@zircon.zircon.seattle.wa.us> Mime-Version: 1.0 X-Mailer: Evolution 2.0.3 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit cc: stable@freebsd.org cc: current@freebsd.org Subject: Fixing Posix semaphores X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Dec 2004 22:09:28 -0000 I have a desire to fix posix semaphores in at least 5.3. The current implementation doesn't actually follow the "spirit" of the standard, even though it technically qualifies in a somewhat degraded sense. I refer to the fact that the current implementation treats posix semaphores as completely contained inside the kernel and essentially divorced from the filesystem. The true "spirit" of the standard places the semaphores directly in the file system, similar to named pipes. However the current implementation treats the supplied "name" as a 14-character identifier, required to begin with a slash and contain no other slashes. Pretty weak. Well, in order to fix this, we need to add file system code and come up with a new type. I currently have some time to spend on something like this and am willing to put in whatever effort it takes. Does anyone want to add their own ideas or requirements? I currently run 5.3, but I suppose I could think about running current at some point in the future. /Joe