Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751113AbWHTSFN (ORCPT ); Sun, 20 Aug 2006 14:05:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751114AbWHTSFN (ORCPT ); Sun, 20 Aug 2006 14:05:13 -0400 Received: from bender.bawue.de ([193.7.176.20]:41112 "EHLO bender.bawue.de") by vger.kernel.org with ESMTP id S1751113AbWHTSFM (ORCPT ); Sun, 20 Aug 2006 14:05:12 -0400 Date: Sun, 20 Aug 2006 20:05:05 +0200 From: Joerg Sommrey To: Linux kernel mailing list Subject: PROBLEM: FUSE unmount breaks serial terminal line Message-ID: <20060820180505.GA18283@sommrey.de> Mail-Followup-To: Joerg Sommrey , Linux kernel mailing list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.12-2006-07-14 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1094 Lines: 31 Hello, something in FUSE breaks serial devices. I found this issue using gphotofs, don't know if any other FUSE impementation has similar effects. The problem is: from the moment the FUSE filesystem is unmounted, a process that read()s on a serial device /dev/ttyS? gets an EOF returncode. Here is the tail of the output from "strace -tt cat /dev/ttyS0" when the FUSE fs was unmounted: 19:41:46.513143 open("/dev/ttyS0", O_RDONLY|O_LARGEFILE) = 3 19:41:46.513373 fstat64(3, {st_mode=S_IFCHR|0660, st_rdev=makedev(4, 64), ...}) = 0 19:41:46.513552 read(3, "", 4096) = 0 19:42:49.854367 close(3) = 0 19:42:49.860663 close(1) = 0 19:42:49.860793 exit_group(0) = ? Found this on x86 with kernels 2.6.16 and 2.6.17. Any ideas? -jo -- -rw-r--r-- 1 jo users 62 2006-08-20 14:06 /home/jo/.signature - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/