From patchwork Fri Oct 16 15:18:18 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Gruenbacher X-Patchwork-Id: 7417321 Return-Path: X-Original-To: patchwork-cifs-client@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 57A989F36A for ; Fri, 16 Oct 2015 15:33:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8839E2063C for ; Fri, 16 Oct 2015 15:33:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0A8A820A66 for ; Fri, 16 Oct 2015 15:33:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933154AbbJPPXC (ORCPT ); Fri, 16 Oct 2015 11:23:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47070 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933152AbbJPPW7 (ORCPT ); Fri, 16 Oct 2015 11:22:59 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id A773F8EA37; Fri, 16 Oct 2015 15:22:59 +0000 (UTC) Received: from nux.redhat.com (vpn1-5-224.ams2.redhat.com [10.36.5.224]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t9GFIRcN011947; Fri, 16 Oct 2015 11:22:53 -0400 From: Andreas Gruenbacher To: Alexander Viro , "Theodore Ts'o" , Andreas Dilger , "J. Bruce Fields" , Jeff Layton , Trond Myklebust , Anna Schumaker , Dave Chinner , linux-ext4@vger.kernel.org, xfs@oss.sgi.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-api@vger.kernel.org Subject: [PATCH v11 40/48] ext4: Don't allow unmapped identifiers in richacls Date: Fri, 16 Oct 2015 17:18:18 +0200 Message-Id: <1445008706-15115-41-git-send-email-agruenba@redhat.com> In-Reply-To: <1445008706-15115-1-git-send-email-agruenba@redhat.com> References: <1445008706-15115-1-git-send-email-agruenba@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Don't allow acls which contain unmapped identifiers: they are meaningful for remote file systems only. Signed-off-by: Andreas Gruenbacher --- fs/ext4/richacl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ext4/richacl.c b/fs/ext4/richacl.c index 906d048..2115385 100644 --- a/fs/ext4/richacl.c +++ b/fs/ext4/richacl.c @@ -74,6 +74,10 @@ __ext4_set_richacl(handle_t *handle, struct inode *inode, struct richacl *acl) int retval, size; void *value; + /* Don't allow acls with unmapped identifiers. */ + if (richacl_has_unmapped_identifiers(acl)) + return -EINVAL; + if (richacl_equiv_mode(acl, &mode) == 0) { inode->i_ctime = ext4_current_time(inode); inode->i_mode = mode;