From owner-svn-src-stable-9@FreeBSD.ORG Fri Sep 20 07:35:08 2013 Return-Path: Delivered-To: svn-src-stable-9@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id CB1E1994; Fri, 20 Sep 2013 07:35:08 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id B8893240C; Fri, 20 Sep 2013 07:35:08 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id r8K7Z8vU066220; Fri, 20 Sep 2013 07:35:08 GMT (envelope-from kib@svn.freebsd.org) Received: (from kib@localhost) by svn.freebsd.org (8.14.7/8.14.5/Submit) id r8K7Z8Hk066219; Fri, 20 Sep 2013 07:35:08 GMT (envelope-from kib@svn.freebsd.org) Message-Id: <201309200735.r8K7Z8Hk066219@svn.freebsd.org> From: Konstantin Belousov Date: Fri, 20 Sep 2013 07:35:08 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r255728 - stable/9/sys/kern X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-9@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: SVN commit messages for only the 9-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Sep 2013 07:35:08 -0000 Author: kib Date: Fri Sep 20 07:35:08 2013 New Revision: 255728 URL: http://svnweb.freebsd.org/changeset/base/255728 Log: MFC r255510: When opening or closing fifo, ensure that the vnode is locked exclusively. Modified: stable/9/sys/kern/vfs_vnops.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/kern/vfs_vnops.c ============================================================================== --- stable/9/sys/kern/vfs_vnops.c Fri Sep 20 07:31:32 2013 (r255727) +++ stable/9/sys/kern/vfs_vnops.c Fri Sep 20 07:35:08 2013 (r255728) @@ -254,6 +254,8 @@ restart: goto bad; } } + if (vp->v_type == VFIFO && VOP_ISLOCKED(vp) != LK_EXCLUSIVE) + vn_lock(vp, LK_UPGRADE | LK_RETRY); if ((error = VOP_OPEN(vp, fmode, cred, td, fp)) != 0) goto bad; @@ -307,7 +309,7 @@ vn_close(vp, flags, file_cred, td) struct mount *mp; int error, lock_flags; - if (!(flags & FWRITE) && vp->v_mount != NULL && + if (vp->v_type != VFIFO && !(flags & FWRITE) && vp->v_mount != NULL && vp->v_mount->mnt_kern_flag & MNTK_EXTENDED_SHARED) lock_flags = LK_SHARED; else