From patchwork Thu Mar 9 12:19:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Luis Henriques X-Patchwork-Id: 661697 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 32E5BC64EC4 for ; Thu, 9 Mar 2023 12:19:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230264AbjCIMTV (ORCPT ); Thu, 9 Mar 2023 07:19:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33712 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230186AbjCIMTS (ORCPT ); Thu, 9 Mar 2023 07:19:18 -0500 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C44A8168BF; Thu, 9 Mar 2023 04:19:17 -0800 (PST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 8254221C15; Thu, 9 Mar 2023 12:19:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678364356; h=from:from:reply-to: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=oli8EhB6KlmXeSRgfZx/pECT9CAq14msmtKRHkakxXU=; b=SR2Do+oOxkvTLsEkVtA70gk4iSezWPX6Np5ZenfcHhW9kkwWTRWb2EyAVafX9HBp1jjTIo 6mi5pV4Kr45n1HojWHxKFg0LVgTR9VI/dH3sMp7G1BLV1vIBHSPfVBtVb4objWDuumrK4j 5ZFA4i+m1SA2gss9tsrWzuOWIw2a26A= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678364356; h=from:from:reply-to: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=oli8EhB6KlmXeSRgfZx/pECT9CAq14msmtKRHkakxXU=; b=AqFW4Cg3nAqRj9g4u1NbrUsKw1WDAjNAsOjE2usKK5x5YpH/QR2eN2BPtjr3bNlasb5U1O +ujiB4mpzZX7NYDA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id CC69213A10; Thu, 9 Mar 2023 12:19:15 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id mO3XLsPOCWSqbAAAMHmgww (envelope-from ); Thu, 09 Mar 2023 12:19:15 +0000 Received: from localhost (brahms.olymp [local]) by brahms.olymp (OpenSMTPD) with ESMTPA id 0130bd2e; Thu, 9 Mar 2023 12:19:13 +0000 (UTC) From: =?utf-8?q?Lu=C3=ADs_Henriques?= To: Eric Biggers , Xiubo Li , Jeff Layton Cc: "Theodore Y. Ts'o" , Jaegeuk Kim , Ilya Dryomov , linux-fscrypt@vger.kernel.org, ceph-devel@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Lu?= =?utf-8?q?=C3=ADs_Henriques?= Subject: [RFC PATCH 2/2] ceph: switch atomic open to use new fscrypt helper Date: Thu, 9 Mar 2023 12:19:10 +0000 Message-Id: <20230309121910.18939-3-lhenriques@suse.de> In-Reply-To: <20230309121910.18939-1-lhenriques@suse.de> References: <20230309121910.18939-1-lhenriques@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Switch ceph atomic open to use __fscrypt_prepare_atomic_open(). This fixes a bug where a dentry is incorrectly set with DCACHE_NOKEY_NAME. This happens when 'dir' has been evicted but the key is still available (for example, where there's a drop_caches). Signed-off-by: Luís Henriques --- fs/ceph/file.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index dee3b445f415..bdd7a7de7d9e 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -795,11 +795,9 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry, ihold(dir); if (IS_ENCRYPTED(dir)) { set_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags); - if (!fscrypt_has_encryption_key(dir)) { - spin_lock(&dentry->d_lock); - dentry->d_flags |= DCACHE_NOKEY_NAME; - spin_unlock(&dentry->d_lock); - } + err = __fscrypt_prepare_atomic_open(dir, dentry); + if (err) + goto out_req; } if (flags & O_CREAT) {