From patchwork Mon Dec 14 06:40:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ronnie Sahlberg X-Patchwork-Id: 11971413 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C34B7C1B0D8 for ; Mon, 14 Dec 2020 06:42:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8977E225A9 for ; Mon, 14 Dec 2020 06:42:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728023AbgLNGmJ (ORCPT ); Mon, 14 Dec 2020 01:42:09 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:21338 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2438782AbgLNGmJ (ORCPT ); Mon, 14 Dec 2020 01:42:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607928043; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:in-reply-to:in-reply-to:references:references; bh=Q2EbUnmYufQyRNu8arCrSK+lGVrZXidyDAaFQFTdD3I=; b=RZzE7yHe+puW6Rr97t3nico2cIyOTFCksXmbcRmoZdLOV5YVPU/RSuPbD+ugUYiX1G8gR7 x7g8z7DqKHBY3TVWCvTzKUbeKGOQSErpI7hCvpSX5Q2J+fJmsX7hkl3DLsLu4Nkm7qbTBD 0g35kBEBxg8b26iMTQFTrsIp5E9VcQA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-31-JYAbWmw1Odyl7_rCDoNGHQ-1; Mon, 14 Dec 2020 01:40:41 -0500 X-MC-Unique: JYAbWmw1Odyl7_rCDoNGHQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B4B25809DC3; Mon, 14 Dec 2020 06:40:40 +0000 (UTC) Received: from test1103.test.redhat.com (vpn2-54-107.bne.redhat.com [10.64.54.107]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2DFA660C05; Mon, 14 Dec 2020 06:40:39 +0000 (UTC) From: Ronnie Sahlberg To: linux-cifs Cc: Steve French Subject: [PATCH 08/12] cifs: do not allow changing posix_paths during remount Date: Mon, 14 Dec 2020 16:40:23 +1000 Message-Id: <20201214064027.2885-8-lsahlber@redhat.com> In-Reply-To: <20201214064027.2885-1-lsahlber@redhat.com> References: <20201214064027.2885-1-lsahlber@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Signed-off-by: Ronnie Sahlberg --- fs/cifs/fs_context.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c index 40a5cfe0615b..4995082b7285 100644 --- a/fs/cifs/fs_context.c +++ b/fs/cifs/fs_context.c @@ -626,6 +626,10 @@ static void smb3_fs_context_free(struct fs_context *fc) static int smb3_verify_reconfigure_ctx(struct smb3_fs_context *new_ctx, struct smb3_fs_context *old_ctx) { + if (new_ctx->posix_paths != old_ctx->posix_paths) { + cifs_dbg(VFS, "can not change posixpaths during remount\n"); + return -EINVAL; + } if (new_ctx->sectype != old_ctx->sectype) { cifs_dbg(VFS, "can not change sec during remount\n"); return -EINVAL;