From owner-freebsd-bugs Wed Jan 8 6: 0:14 2003 Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 07E2037B401 for ; Wed, 8 Jan 2003 06:00:11 -0800 (PST) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id DEB8043ED1 for ; Wed, 8 Jan 2003 06:00:09 -0800 (PST) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.6/8.12.6) with ESMTP id h08E09NS054651 for ; Wed, 8 Jan 2003 06:00:09 -0800 (PST) (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.6/8.12.6/Submit) id h08E09Wr054650; Wed, 8 Jan 2003 06:00:09 -0800 (PST) Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 63E5937B401 for ; Wed, 8 Jan 2003 05:51:58 -0800 (PST) Received: from mail.dt.e-technik.uni-dortmund.de (krusty.dt.e-technik.Uni-Dortmund.DE [129.217.163.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 027AE43EA9 for ; Wed, 8 Jan 2003 05:51:57 -0800 (PST) (envelope-from ma@dt.e-technik.uni-dortmund.de) Received: from m2a2.dyndns.org (krusty.dt.e-technik.uni-dortmund.de [129.217.163.1]) by mail.dt.e-technik.uni-dortmund.de (Postfix) with ESMTP id E4D76A381A for ; Wed, 8 Jan 2003 14:51:55 +0100 (CET) Received: by merlin.emma.line.org (Postfix, from userid 500) id 46E6677A1A; Wed, 8 Jan 2003 14:51:49 +0100 (CET) Received: from libertas.emma.line.org (libertas.emma.line.org [192.168.0.2]) by merlin.emma.line.org (Postfix) with ESMTP id 25E4A77941 for ; Wed, 8 Jan 2003 14:18:04 +0100 (CET) Received: from libertas.emma.line.org (localhost [127.0.0.1]) by libertas.emma.line.org (8.12.6/8.12.6) with ESMTP id h08DI3bJ000572 for ; Wed, 8 Jan 2003 14:18:03 +0100 (CET) Received: (from emma@localhost) by libertas.emma.line.org (8.12.6/8.12.6/Submit) id h08DI3KD000571 for emma@merlin.emma.line.org; Wed, 8 Jan 2003 14:18:03 +0100 (CET) Received: from libertas.emma.line.org (localhost [127.0.0.1]) by libertas.emma.line.org (8.12.6/8.12.6) with ESMTP id h08DI2bJ000561; Wed, 8 Jan 2003 14:18:03 +0100 (CET) (envelope-from emma@libertas.emma.line.org) Received: (from emma@localhost) by libertas.emma.line.org (8.12.6/8.12.6/Submit) id h08DI1Lc000560; Wed, 8 Jan 2003 14:18:01 +0100 (CET) (envelope-from emma) Message-Id: <200301081318.h08DI1Lc000560@libertas.emma.line.org> Date: Wed, 8 Jan 2003 14:18:01 +0100 (CET) From: Matthias Andree Reply-To: Matthias Andree To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Subject: bin/46867: NIS-based getpwent() falsely returns NULL Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org >Number: 46867 >Category: bin >Synopsis: NIS-based getpwent() falsely returns NULL >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Jan 08 06:00:09 PST 2003 >Closed-Date: >Last-Modified: >Originator: Matthias Andree >Release: FreeBSD 4.7-STABLE i386 >Organization: >Environment: System: FreeBSD libertas.emma.line.org 4.7-STABLE FreeBSD 4.7-STABLE #11: Wed Jan 8 01:47:45 CET 2003 toor@libertas.emma.line.org:/usr/src/sys/compile/LIBERTAS i386 >Description: When NIS is enabled e. g. for passwd lookups, and the NIS server goes down, the NIS domains goes unbound, NIS-based lookups will falsely fail after 200 seconds (40 retries). The getpwnam interface (and other similar interfaces) have no means of returning a temporary error, and applications do not expect temporary results. As a consequence, the application returns "no such user" when the user is in fact present, only his/her passwd entry is temporarily inaccessible. -su-2.05b# time id -u nbin id: nbin: no such user real 3m20.443s user 0m0.020s sys 0m0.026s This can, for example, cause mail to bounce when the NIS server goes down. >How-To-Repeat: >Fix: NEVER let NIS-based lookups time out. (Solaris also retries forever.) >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message