From patchwork Thu Apr 30 11:59:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Satya Tangirala X-Patchwork-Id: 11520077 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F0FAC46DC for ; Thu, 30 Apr 2020 12:00:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D86B220775 for ; Thu, 30 Apr 2020 12:00:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="WVjua0bo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727087AbgD3MAb (ORCPT ); Thu, 30 Apr 2020 08:00:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726942AbgD3MAS (ORCPT ); Thu, 30 Apr 2020 08:00:18 -0400 Received: from mail-qv1-xf4a.google.com (mail-qv1-xf4a.google.com [IPv6:2607:f8b0:4864:20::f4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D239EC08ED7D for ; Thu, 30 Apr 2020 05:00:16 -0700 (PDT) Received: by mail-qv1-xf4a.google.com with SMTP id w9so6099573qvs.22 for ; Thu, 30 Apr 2020 05:00:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=dcBMNhJyVF3JG7u2k+hpIfX5J5/+YNOMhft7o2B+Ju4=; b=WVjua0boMZFfyXRxNHxXtkkQlvtsd9hMr76JSeSRnGAS4i4rb0v5hyP/xpU/t08yAU 8iFqQJRhyAkwJFM1oK1XZBTqXHm3CqsdLruIVMn/pVnKPy3fC4DShhJRinGldvR/S/PE BRJ35yKgDNYU78xLeadViChpObrcGpoomH0GOf1yWskNC6xGjTXCQ70zRp3w8mJsEov1 wnopsVuB0htL7AZ3eqUvciTbLOa1LCZTKOiayOWzgpDf/NefzgdtHrk8kZ6h2I0f2Ln0 gH8rvRj4IA4NAJmjknAgox3uK+dYnH04ADDO1Fq1XchcZcytltv69jWbnlNIl/trv1Tn lHrg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=dcBMNhJyVF3JG7u2k+hpIfX5J5/+YNOMhft7o2B+Ju4=; b=F0ZYdIEcJGvRMmFeZ3l1cYQcpxZF39OuZAVrDqk4PSNWEfHf0O49RmnG596pBfF7dB E7yKO3bJYsvgSqrBo0GvNlPspoFvZV5DK+fiKop6y+4zobDlnFeZcw9T4OgFaoKJS+14 NEUZRP4HTKkd4gEexFywiW7RkReMlD/dYQn/iFN+ddGScB6ITtOO7VsUh1EBmIVNdbJX oYq3AWPh4ZHvWA90KZrt+lHAa71RjAUIdmG+2097q8eusFakKqLwUzJ1/gK6FNIf76Bo EYv2c4zvBaxfRMFoQUc5paWsJWW1jh1EghRrVQJsZVjLA5Ndd7I9KVt4RoEznZ251ERr c2MQ== X-Gm-Message-State: AGi0PuY/aOsXXPEYLG8Z1IZmc8KGaTbvrAQ+HasRxgTg73jA8dIfHkI0 N5iMk53RDlh9yUG+0Qu7lLyXDFKPZfdiyGgT8rqKPXsjBYpf2rVK4L+iFmuSni3ZCF6Gpkgjy3G n1HeHAivN2yw/LytBH5xLlFFNo85nCi3LINK+ulMfnJD9htnmlQK0yssYQTGuuvzrweQV X-Google-Smtp-Source: APiQypIqTjtVoRaD2OhqjnO9XpfMgccnF/80vIjLwCBdsxgR6aNsuU+7iyNxHrHcnYjkH2WPjyT1Rf+7CFc= X-Received: by 2002:a05:6214:1804:: with SMTP id o4mr2636288qvw.10.1588248015930; Thu, 30 Apr 2020 05:00:15 -0700 (PDT) Date: Thu, 30 Apr 2020 11:59:56 +0000 In-Reply-To: <20200430115959.238073-1-satyat@google.com> Message-Id: <20200430115959.238073-10-satyat@google.com> Mime-Version: 1.0 References: <20200430115959.238073-1-satyat@google.com> X-Mailer: git-send-email 2.26.2.303.gf8c07b1a785-goog Subject: [PATCH v12 09/12] fs: introduce SB_INLINECRYPT From: Satya Tangirala To: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-ext4@vger.kernel.org Cc: Barani Muthukumaran , Kuohong Wang , Kim Boojin , Satya Tangirala Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Introduce SB_INLINECRYPT, which is set by filesystems that wish to use blk-crypto for file content en/decryption. This flag maps to the '-o inlinecrypt' mount option which multiple filesystems will implement, and code in fs/crypto/ needs to be able to check for this mount option in a filesystem-independent way. Signed-off-by: Satya Tangirala --- fs/proc_namespace.c | 1 + include/linux/fs.h | 1 + 2 files changed, 2 insertions(+) diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c index 273ee82d8aa97..8bf195d3bda69 100644 --- a/fs/proc_namespace.c +++ b/fs/proc_namespace.c @@ -49,6 +49,7 @@ static int show_sb_opts(struct seq_file *m, struct super_block *sb) { SB_DIRSYNC, ",dirsync" }, { SB_MANDLOCK, ",mand" }, { SB_LAZYTIME, ",lazytime" }, + { SB_INLINECRYPT, ",inlinecrypt" }, { 0, NULL } }; const struct proc_fs_info *fs_infop; diff --git a/include/linux/fs.h b/include/linux/fs.h index 4f6f59b4f22a8..38fc6c8d4f45b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1376,6 +1376,7 @@ extern int send_sigurg(struct fown_struct *fown); #define SB_NODIRATIME 2048 /* Do not update directory access times */ #define SB_SILENT 32768 #define SB_POSIXACL (1<<16) /* VFS does not apply the umask */ +#define SB_INLINECRYPT (1<<17) /* Use blk-crypto for encrypted files */ #define SB_KERNMOUNT (1<<22) /* this is a kern_mount call */ #define SB_I_VERSION (1<<23) /* Update inode I_version field */ #define SB_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */