From patchwork Mon Dec 7 23:36:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ronnie Sahlberg X-Patchwork-Id: 11957063 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 85F64C433FE for ; Mon, 7 Dec 2020 23:39:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 45EC923A21 for ; Mon, 7 Dec 2020 23:39:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727415AbgLGXjL (ORCPT ); Mon, 7 Dec 2020 18:39:11 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:21231 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726483AbgLGXjK (ORCPT ); Mon, 7 Dec 2020 18:39:10 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607384265; 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=aUw2VL+eY4mhSRe7ojsIqnqsgjh9qiNHIZ9rofnFaiQ=; b=D6S2zfKB4wvJp3aSX3vUxekCdEqLaUfLzIfXUCFeioYrYJnvvAWwaHsZJz4tJHfhJmivHB a73vlQgJ2hBEvwArxyZn/hXFYIVqhoBsrsJhEbC//8DQK+M9OtNNsoNfhzsfbBHUJ9mwdH MwGv3A99qCFT+E6pnDWs/A8kgkflLGk= 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-574-sFgHFE__NgCwn3jMiieO2A-1; Mon, 07 Dec 2020 18:37:43 -0500 X-MC-Unique: sFgHFE__NgCwn3jMiieO2A-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2BF66192D78E; Mon, 7 Dec 2020 23:37:42 +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 844555C1A1; Mon, 7 Dec 2020 23:37:41 +0000 (UTC) From: Ronnie Sahlberg To: linux-cifs Cc: Steve French Subject: [PATCH 18/21] cifs: do not allow changing posix_paths during remount Date: Tue, 8 Dec 2020 09:36:43 +1000 Message-Id: <20201207233646.29823-18-lsahlber@redhat.com> In-Reply-To: <20201207233646.29823-1-lsahlber@redhat.com> References: <20201207233646.29823-1-lsahlber@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 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 00bb11939837..ee9c1fb666c7 100644 --- a/fs/cifs/fs_context.c +++ b/fs/cifs/fs_context.c @@ -624,6 +624,10 @@ 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;