From owner-freebsd-bugs@freebsd.org Mon Oct 29 01:50:33 2018 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 32E2D10EC5E6 for ; Mon, 29 Oct 2018 01:50:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id B58A078E37 for ; Mon, 29 Oct 2018 01:50:32 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 7B0DF10EC5E5; Mon, 29 Oct 2018 01:50:32 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6A07710EC5E4 for ; Mon, 29 Oct 2018 01:50:32 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id F006B78E36 for ; Mon, 29 Oct 2018 01:50:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) 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 mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 43A5522D2 for ; Mon, 29 Oct 2018 01:50:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w9T1oV9F000859 for ; Mon, 29 Oct 2018 01:50:31 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w9T1oVMP000858 for bugs@FreeBSD.org; Mon, 29 Oct 2018 01:50:31 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 232772] fusefs(4) allows rename to create directory loops Date: Mon, 29 Oct 2018 01:50:31 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: asomers@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org 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 Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Oct 2018 01:50:33 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D232772 Bug ID: 232772 Summary: fusefs(4) allows rename to create directory loops Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: asomers@FreeBSD.org rename(2) is supposed to return EINVAL if it would create a directory loop.= =20 This is the behavior of UFS and ZFS. However, fusefs(4) doesn't detect it.= =20 fusefs-exfat and fusefs-ext2 both hang when you try, and a closed-source fu= se filesystem created the directory loop just fine. Steps to reproduce, with exfat: # truncate -s 1g /tmp/da1 # mkexfatfs /tmp/da1 mkexfatfs 1.2.7 Creating... done. Flushing... done. File system created successfully. # sudo mount.exfat -d /tmp/da1 /mnt Then in another window: # cd /mnt # mkdir foo # mkdir foo/sub # mv foo foo/sub/sub mv: rename foo to foo/sub/sub: Operation timed out Note that renaming foo to foo/sub correctly fails; the error only happens w= ith the additional level of indirection. Tested on 12.0-ALPHA9 amd64 and TrueOS-Desktop-201803131015. --=20 You are receiving this mail because: You are the assignee for the bug.=