From mboxrd@z Thu Jan 1 00:00:00 1970 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=-13.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 64954C4708F for ; Fri, 4 Jun 2021 04:45:50 +0000 (UTC) Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 28F716140B for ; Fri, 4 Jun 2021 04:45:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 28F716140B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linux-f2fs-devel-bounces@lists.sourceforge.net Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.90_1) (envelope-from ) id 1lp1iN-0007Cl-Vs; Fri, 04 Jun 2021 04:45:47 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lp1iM-0007CX-6w for linux-f2fs-devel@lists.sourceforge.net; Fri, 04 Jun 2021 04:45:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=In-Reply-To:Content-Type:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=HRgQInyTWGA/ZP0Io+8yGQrUoQRRTJUvKjDtlIqs+dw=; b=V6cwkQYA34pcYa/jL4BiGwgOfR KJpN47E6mDAUTMk73LkU8aTYMN5cFgfRT9r4q9ndRlqSeT3ohKkzy2aYVJCjmo6DwyzEVTg+WCTNG /STmznl2jSJYZeWaOTlp1CKLD4eNAPSYK+FAnlMF2HyuVLH5iXoiw4qZru3LBPUwqziE=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To :From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=HRgQInyTWGA/ZP0Io+8yGQrUoQRRTJUvKjDtlIqs+dw=; b=JCNmIzNWW4TGohlAVxvvyys7cH Egwe1KRAfgcKIGofTSzuheVqOFDMigBcnOJe6Ld6Qbfozo3B1mCehUFsnqSdp0wahTgJ1EN2InVbB PVrDqB39w5/NSzkC/4ffa0t0ePKkzAoTOWjDJdkUiNSLq9bMiLHO51yxPqBJgG40c8dU=; Received: from mail.kernel.org ([198.145.29.99]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3) id 1lp1iC-0005cQ-AY for linux-f2fs-devel@lists.sourceforge.net; Fri, 04 Jun 2021 04:45:46 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3F24A613FF; Fri, 4 Jun 2021 04:45:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622781927; bh=uU82qCZ6QkFRufyybpIk3UqLggbYAk7o95Fb2xofXWQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mXzKfQR8MRcG/MOktzoWLBBQrwb89mInXvkqL1jXmN7LdrmHZ/NnCtZi92yE/Qx6H WLZleFbg4RVHYhME2zNObPZjR8C+47y7TDlft/8TEKECaTX8HpJmvAgx4dIR5GrL2h Mco33/Eq1lOHZxIj5EF2E2MFcUhDzkm7lfQtAmidRG6HTJw7Pf+cs5170WKrdcXkcV cSV0y5B2PPqgk6RAzv8/etFKgB2bHirbrL85a9P/UfQmeFWOcSW/7lM8buJxORvxLH 7oFyJxI7AWflnY1kB2N0e/Ko7w4s1D0S73N+1OlTemx4suZspZ+S9Joi4+z8C3ZRGu J19iRHPNV+dHw== Date: Thu, 3 Jun 2021 21:45:25 -0700 From: Jaegeuk Kim To: Eric Biggers Message-ID: References: <20210603095038.314949-1-drosen@google.com> <20210603095038.314949-3-drosen@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Headers-End: 1lp1iC-0005cQ-AY Subject: Re: [f2fs-dev] [PATCH v2 2/2] f2fs: Advertise encrypted casefolding in sysfs X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Daniel Rosenberg , kernel-team@android.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, Gabriel Krisman Bertazi Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On 06/03, Eric Biggers wrote: > On Thu, Jun 03, 2021 at 09:50:38AM +0000, Daniel Rosenberg wrote: > > Older kernels don't support encryption with casefolding. This adds > > the sysfs entry encrypted_casefold to show support for those combined > > features. Support for this feature was originally added by > > commit 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption") > > > > Fixes: 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption") > > Cc: stable@vger.kernel.org # v5.11+ > > Signed-off-by: Daniel Rosenberg > > --- > > fs/f2fs/sysfs.c | 15 +++++++++++++-- > > 1 file changed, 13 insertions(+), 2 deletions(-) > > > > diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c > > index 09e3f258eb52..6604291a3cdf 100644 > > --- a/fs/f2fs/sysfs.c > > +++ b/fs/f2fs/sysfs.c > > @@ -161,6 +161,9 @@ static ssize_t features_show(struct f2fs_attr *a, > > if (f2fs_sb_has_compression(sbi)) > > len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > > len ? ", " : "", "compression"); > > + if (f2fs_sb_has_casefold(sbi) && f2fs_sb_has_encrypt(sbi)) > > + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > > + len ? ", " : "", "encrypted_casefold"); > > len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > > len ? ", " : "", "pin_file"); > > len += scnprintf(buf + len, PAGE_SIZE - len, "\n"); > > @@ -579,6 +582,7 @@ enum feat_id { > > FEAT_CASEFOLD, > > FEAT_COMPRESSION, > > FEAT_TEST_DUMMY_ENCRYPTION_V2, > > + FEAT_ENCRYPTED_CASEFOLD, > > }; > > Actually looking at it more closely, this patch is wrong. > > It only makes sense to declare "encrypted_casefold" as a feature of the > filesystem implementation, i.e. /sys/fs/f2fs/features/encrypted_casefold. > > It does *not* make sense to declare it as a feature of a particular filesystem > instance, i.e. /sys/fs/f2fs/$disk/features, as it is already implied by the > filesystem instance having both the encryption and casefold features enabled. > > Can we add /sys/fs/f2fs/features/encrypted_casefold only? wait.. /sys/fs/f2fs/features/encrypted_casefold is on by CONFIG_FS_ENCRYPTION && CONFIG_UNICODE. OTOH, /sys/fs/f2fs/$dis/feature_list/encrypted_casefold is on by on-disk features: F2FS_FEATURE_ENCRYPT and F2FS_FEATURE_CASEFOLD. > > - Eric _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 5933DC47097 for ; Fri, 4 Jun 2021 04:45:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 43B2D6140B for ; Fri, 4 Jun 2021 04:45:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229800AbhFDErN (ORCPT ); Fri, 4 Jun 2021 00:47:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:33692 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229452AbhFDErN (ORCPT ); Fri, 4 Jun 2021 00:47:13 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3F24A613FF; Fri, 4 Jun 2021 04:45:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622781927; bh=uU82qCZ6QkFRufyybpIk3UqLggbYAk7o95Fb2xofXWQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=mXzKfQR8MRcG/MOktzoWLBBQrwb89mInXvkqL1jXmN7LdrmHZ/NnCtZi92yE/Qx6H WLZleFbg4RVHYhME2zNObPZjR8C+47y7TDlft/8TEKECaTX8HpJmvAgx4dIR5GrL2h Mco33/Eq1lOHZxIj5EF2E2MFcUhDzkm7lfQtAmidRG6HTJw7Pf+cs5170WKrdcXkcV cSV0y5B2PPqgk6RAzv8/etFKgB2bHirbrL85a9P/UfQmeFWOcSW/7lM8buJxORvxLH 7oFyJxI7AWflnY1kB2N0e/Ko7w4s1D0S73N+1OlTemx4suZspZ+S9Joi4+z8C3ZRGu J19iRHPNV+dHw== Date: Thu, 3 Jun 2021 21:45:25 -0700 From: Jaegeuk Kim To: Eric Biggers Cc: Daniel Rosenberg , Chao Yu , linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Gabriel Krisman Bertazi , kernel-team@android.com, stable@vger.kernel.org Subject: Re: [PATCH v2 2/2] f2fs: Advertise encrypted casefolding in sysfs Message-ID: References: <20210603095038.314949-1-drosen@google.com> <20210603095038.314949-3-drosen@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 06/03, Eric Biggers wrote: > On Thu, Jun 03, 2021 at 09:50:38AM +0000, Daniel Rosenberg wrote: > > Older kernels don't support encryption with casefolding. This adds > > the sysfs entry encrypted_casefold to show support for those combined > > features. Support for this feature was originally added by > > commit 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption") > > > > Fixes: 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption") > > Cc: stable@vger.kernel.org # v5.11+ > > Signed-off-by: Daniel Rosenberg > > --- > > fs/f2fs/sysfs.c | 15 +++++++++++++-- > > 1 file changed, 13 insertions(+), 2 deletions(-) > > > > diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c > > index 09e3f258eb52..6604291a3cdf 100644 > > --- a/fs/f2fs/sysfs.c > > +++ b/fs/f2fs/sysfs.c > > @@ -161,6 +161,9 @@ static ssize_t features_show(struct f2fs_attr *a, > > if (f2fs_sb_has_compression(sbi)) > > len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > > len ? ", " : "", "compression"); > > + if (f2fs_sb_has_casefold(sbi) && f2fs_sb_has_encrypt(sbi)) > > + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > > + len ? ", " : "", "encrypted_casefold"); > > len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > > len ? ", " : "", "pin_file"); > > len += scnprintf(buf + len, PAGE_SIZE - len, "\n"); > > @@ -579,6 +582,7 @@ enum feat_id { > > FEAT_CASEFOLD, > > FEAT_COMPRESSION, > > FEAT_TEST_DUMMY_ENCRYPTION_V2, > > + FEAT_ENCRYPTED_CASEFOLD, > > }; > > Actually looking at it more closely, this patch is wrong. > > It only makes sense to declare "encrypted_casefold" as a feature of the > filesystem implementation, i.e. /sys/fs/f2fs/features/encrypted_casefold. > > It does *not* make sense to declare it as a feature of a particular filesystem > instance, i.e. /sys/fs/f2fs/$disk/features, as it is already implied by the > filesystem instance having both the encryption and casefold features enabled. > > Can we add /sys/fs/f2fs/features/encrypted_casefold only? wait.. /sys/fs/f2fs/features/encrypted_casefold is on by CONFIG_FS_ENCRYPTION && CONFIG_UNICODE. OTOH, /sys/fs/f2fs/$dis/feature_list/encrypted_casefold is on by on-disk features: F2FS_FEATURE_ENCRYPT and F2FS_FEATURE_CASEFOLD. > > - Eric