From owner-freebsd-bugs@FreeBSD.ORG Mon Mar 23 05:17:59 2015 Return-Path: Delivered-To: freebsd-bugs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C0466A85 for ; Mon, 23 Mar 2015 05:17:59 +0000 (UTC) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 8CBBCD23 for ; Mon, 23 Mar 2015 05:17:59 +0000 (UTC) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id t2N5HxTl069662 for ; Mon, 23 Mar 2015 05:17:59 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 198819] rewinddir(3) after fdopendir(3) results in double entries Date: Mon, 23 Mar 2015 05:17:59 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 10.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: markrwilliams@gmail.com X-Bugzilla-Status: New X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Mar 2015 05:17:59 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198819 Bug ID: 198819 Summary: rewinddir(3) after fdopendir(3) results in double entries Product: Base System Version: 10.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: markrwilliams@gmail.com Created attachment 154687 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=154687&action=edit example program that produces incorrect output on UFS The attached program attempts to list the current working directory. It obtains a pointer to the directory stream via fdopendir(3) and then calls rewinddir(3) before a standard loop over readdir(3). On two out of four machines I tested, the program lists the contents of the current directory twice, like so: $ ls -1 . .. readdir_duplicate_entries readdir_duplicate_entries.c $ ./readdir_duplicate_entries . .. readdir_duplicate_entries.c readdir_duplicate_entries . .. readdir_duplicate_entries.c readdir_duplicate_entries $ The program produces the correct output if rewinddir(3) is not called or if opendir(3) is called instead of open(2)/fdopendir(3). uname -a for the affected machines: FreeBSD lithos.ferv.org 10.1-RELEASE-p5 FreeBSD 10.1-RELEASE-p5 #0: Tue Jan 27 08:55:07 UTC 2015 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 FreeBSD ip-172-31-19-241 10.1-RELEASE-p6 FreeBSD 10.1-RELEASE-p6 #0: Tue Feb 24 19:00:21 UTC 2015 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 All mounts on both of the affected machines are UFS. All mounts on the the third and fourth machines, on which the test program produced *correct* output, are ZFS. uname information for those: FreeBSD glob 10.0-RELEASE-p9 FreeBSD 10.0-RELEASE-p9 #0: Mon Sep 15 14:35:52 UTC 2014 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 FreeBSD 10.1-RELEASE-p6 (GENERIC) #0: Tue Feb 24 19:00:21 UTC 2015 -- You are receiving this mail because: You are the assignee for the bug.