From patchwork Tue Feb 16 17:31:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 12090379 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=-21.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,INCLUDES_PULL_REQUEST, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,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 57130C433DB for ; Tue, 16 Feb 2021 17:33:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1B57264E04 for ; Tue, 16 Feb 2021 17:33:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231178AbhBPRck (ORCPT ); Tue, 16 Feb 2021 12:32:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:34874 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231216AbhBPRb6 (ORCPT ); Tue, 16 Feb 2021 12:31:58 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id C504D64DA1; Tue, 16 Feb 2021 17:31:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1613496677; bh=mXnJDdFhDKnuB4BfSnRg55qq72NgQAWh/t0zlWZx1ac=; h=Date:From:To:Cc:Subject:From; b=drZ2I17AtuopvjlB/V3/59+15qqq0Fx5jdgKbl/5GigP2LPzOJc1m3ojlytCR8Gfi lkfbPmltxTG7V8pADiWoPwoMrxKyocNpF5vBvz4AePysb7acjSyXwQWb0duYJdbw/C 1EACbnbvix33Il1O62ICyquCoPmhapOrhIgPAcCmhdaUJh/wY9nqHrF7Mkiy9WNj8m twdc2UEE6l0FZfFLad292feM5Htv70EoKCeRcpEgkvzYILbYQNiH+w5IaxA0BvoKjG ZHMvnMlMTLA5VLbXn29PJMGVi0Baq0xejVYPwAmUm1aOTPv3YKo1GFbRjTRRUE+C75 6jHbe1WXaZ2QQ== Date: Tue, 16 Feb 2021 09:31:15 -0800 From: Eric Biggers To: Linus Torvalds Cc: linux-fscrypt@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Theodore Ts'o , Jaegeuk Kim , Victor Hsieh Subject: [GIT PULL] fsverity updates for 5.12 Message-ID: MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The following changes since commit 6ee1d745b7c9fd573fba142a2efdad76a9f1cb04: Linux 5.11-rc5 (2021-01-24 16:47:14 -0800) are available in the Git repository at: https://git.kernel.org/pub/scm/fs/fscrypt/fscrypt.git tags/fsverity-for-linus for you to fetch changes up to 07c99001312cbf90a357d4877a358f796eede65b: fs-verity: support reading signature with ioctl (2021-02-07 14:51:19 -0800) ---------------------------------------------------------------- Add an ioctl which allows reading fs-verity metadata from a file. This is useful when a file with fs-verity enabled needs to be served somewhere, and the other end wants to do its own fs-verity compatible verification of the file. See the commit messages for details. This new ioctl has been tested using new xfstests I've written for it. ---------------------------------------------------------------- Eric Biggers (6): fs-verity: factor out fsverity_get_descriptor() fs-verity: don't pass whole descriptor to fsverity_verify_signature() fs-verity: add FS_IOC_READ_VERITY_METADATA ioctl fs-verity: support reading Merkle tree with ioctl fs-verity: support reading descriptor with ioctl fs-verity: support reading signature with ioctl Documentation/filesystems/fsverity.rst | 76 +++++++++++++ fs/ext4/ioctl.c | 7 ++ fs/f2fs/file.c | 11 ++ fs/verity/Makefile | 1 + fs/verity/fsverity_private.h | 13 ++- fs/verity/open.c | 133 ++++++++++++++-------- fs/verity/read_metadata.c | 195 +++++++++++++++++++++++++++++++++ fs/verity/signature.c | 20 +--- include/linux/fsverity.h | 12 ++ include/uapi/linux/fsverity.h | 14 +++ 10 files changed, 417 insertions(+), 65 deletions(-) create mode 100644 fs/verity/read_metadata.c