From owner-freebsd-bugs@FreeBSD.ORG Thu Jun 14 01:30:04 2007 Return-Path: X-Original-To: freebsd-bugs@hub.freebsd.org Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0F01916A41F for ; Thu, 14 Jun 2007 01:30:04 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [69.147.83.40]) by mx1.freebsd.org (Postfix) with ESMTP id CC4D513C457 for ; Thu, 14 Jun 2007 01:30:03 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.4/8.13.4) with ESMTP id l5E1U3Do027085 for ; Thu, 14 Jun 2007 01:30:03 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.4/8.13.4/Submit) id l5E1U3r7027084; Thu, 14 Jun 2007 01:30:03 GMT (envelope-from gnats) Resent-Date: Thu, 14 Jun 2007 01:30:03 GMT Resent-Message-Id: <200706140130.l5E1U3r7027084@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Ed Ravin Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id F35EC16A41F for ; Thu, 14 Jun 2007 01:22:44 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [69.147.83.33]) by mx1.freebsd.org (Postfix) with ESMTP id E38A813C468 for ; Thu, 14 Jun 2007 01:22:44 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.13.1/8.13.1) with ESMTP id l5E1MiWu009618 for ; Thu, 14 Jun 2007 01:22:44 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.13.1/8.13.1/Submit) id l5E1MiAQ009617; Thu, 14 Jun 2007 01:22:44 GMT (envelope-from nobody) Message-Id: <200706140122.l5E1MiAQ009617@www.freebsd.org> Date: Thu, 14 Jun 2007 01:22:44 GMT From: Ed Ravin To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.0 Cc: Subject: misc/113668: scandir(3) uses st_size of directory in unsupported manner X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Jun 2007 01:30:04 -0000 >Number: 113668 >Category: misc >Synopsis: scandir(3) uses st_size of directory in unsupported manner >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Jun 14 01:30:03 GMT 2007 >Closed-Date: >Last-Modified: >Originator: Ed Ravin >Release: >Organization: Public Access Networks >Environment: >Description: src/lib/libc/gen/scandir.c assumes that a directory's st_size is multiples of 24. This is against POSIX, which doesn't define what st_size means for directories, and will cause problems when run against an NFS-exported ZFS file system from a Solaris box, where st_size is the number of entries in the directory. For example, a 5-entry directory returns st_size of 5, and then scandir does "arraysz= st_size / 24", and then does a malloc() of arraysz bytes, then writes something into the memory (that wasn't) allocated. See also NetBSD bug PR/36464. OpenBSD is similarly affected. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: