From patchwork Tue Jun 13 05:23:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Xiubo Li X-Patchwork-Id: 13277977 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8955C7EE43 for ; Tue, 13 Jun 2023 05:30:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240070AbjFMFaE (ORCPT ); Tue, 13 Jun 2023 01:30:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240178AbjFMF33 (ORCPT ); Tue, 13 Jun 2023 01:29:29 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2D4E171A for ; Mon, 12 Jun 2023 22:28:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1686634106; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5VXDIOr5cs6ER3IWVcyuiP1ruxkzXlpQRoFwRKgkEtI=; b=ZbHV8w7RG2KsCG3/af2BY8HfFeM6Tt5I64ql1CCH8xI72TlbbLvSapbU5xQo27SjFIca1z LAR/WKbzCnXH/BoMJzLOKgjYysrvE4uY0Q4I6x+48fMk0UWlRS2ewr0XM6lPkGkDQg7/H5 9h2booAqnPUD4ql7ryLgSqpXgejN7lQ= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-133-1nly1MWbNHuVyvTl9SeScg-1; Tue, 13 Jun 2023 01:28:24 -0400 X-MC-Unique: 1nly1MWbNHuVyvTl9SeScg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 55F4C811E86; Tue, 13 Jun 2023 05:28:24 +0000 (UTC) Received: from li-a71a4dcc-35d1-11b2-a85c-951838863c8d.ibm.com.com (ovpn-12-155.pek2.redhat.com [10.72.12.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id 925BA1121314; Tue, 13 Jun 2023 05:28:20 +0000 (UTC) From: xiubli@redhat.com To: idryomov@gmail.com, ceph-devel@vger.kernel.org Cc: jlayton@kernel.org, vshankar@redhat.com, mchangir@redhat.com, lhenriques@suse.de, Xiubo Li Subject: [PATCH v20 24/71] ceph: set DCACHE_NOKEY_NAME in atomic open Date: Tue, 13 Jun 2023 13:23:37 +0800 Message-Id: <20230613052424.254540-25-xiubli@redhat.com> In-Reply-To: <20230613052424.254540-1-xiubli@redhat.com> References: <20230613052424.254540-1-xiubli@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org From: Jeff Layton Atomic open can act as a lookup if handed a dentry that is negative on the MDS. Ensure that we set DCACHE_NOKEY_NAME on the dentry in atomic_open, if we don't have the key for the parent. Otherwise, we can end up validating the dentry inappropriately if someone later adds a key. Tested-by: Luís Henriques Tested-by: Venky Shankar Reviewed-by: Luís Henriques Reviewed-by: Xiubo Li Signed-off-by: Jeff Layton --- fs/ceph/file.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index e4dadad50f9b..1d63537be61c 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -784,6 +784,13 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry, req->r_args.open.mask = cpu_to_le32(mask); req->r_parent = dir; ihold(dir); + if (IS_ENCRYPTED(dir)) { + if (!fscrypt_has_encryption_key(dir)) { + spin_lock(&dentry->d_lock); + dentry->d_flags |= DCACHE_NOKEY_NAME; + spin_unlock(&dentry->d_lock); + } + } if (flags & O_CREAT) { struct ceph_file_layout lo;