From patchwork Tue Feb 12 23:42:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tadeusz Struk X-Patchwork-Id: 10808955 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4658517FB for ; Tue, 12 Feb 2019 23:42:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 36AFA2C080 for ; Tue, 12 Feb 2019 23:42:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2A8FD2C083; Tue, 12 Feb 2019 23:42:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D3ED32C080 for ; Tue, 12 Feb 2019 23:42:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732173AbfBLXmH (ORCPT ); Tue, 12 Feb 2019 18:42:07 -0500 Received: from mga03.intel.com ([134.134.136.65]:49179 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732164AbfBLXmH (ORCPT ); Tue, 12 Feb 2019 18:42:07 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Feb 2019 15:42:06 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,362,1544515200"; d="scan'208";a="115726031" Received: from tstruk-mobl1.jf.intel.com ([10.7.196.160]) by orsmga006.jf.intel.com with ESMTP; 12 Feb 2019 15:42:05 -0800 Subject: [PATCH v2 1/2] selftests/tpm2: Open tpm dev in unbuffered mode From: Tadeusz Struk To: jarkko.sakkinen@linux.intel.com Cc: linux-kselftest@vger.kernel.org, shuah@kernel.org, linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, PeterHuewe@gmx.de, jgg@ziepe.ca Date: Tue, 12 Feb 2019 15:42:05 -0800 Message-ID: <155001492513.13014.3572730050393346659.stgit@tstruk-mobl1.jf.intel.com> User-Agent: StGit/unknown-version MIME-Version: 1.0 Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: X-Virus-Scanned: ClamAV using ClamSMTP In order to have control over how many bytes are read or written the device needs to be opened in unbuffered mode. Signed-off-by: Tadeusz Struk --- v2: - Changed subject tags to selftests/tpm2: --- tools/testing/selftests/tpm2/tpm2.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/tpm2/tpm2.py b/tools/testing/selftests/tpm2/tpm2.py index 40ea95ce2ead..c2b9f2b1a0ac 100644 --- a/tools/testing/selftests/tpm2/tpm2.py +++ b/tools/testing/selftests/tpm2/tpm2.py @@ -357,9 +357,9 @@ class Client: self.flags = flags if (self.flags & Client.FLAG_SPACE) == 0: - self.tpm = open('/dev/tpm0', 'r+b') + self.tpm = open('/dev/tpm0', 'r+b', buffering=0) else: - self.tpm = open('/dev/tpmrm0', 'r+b') + self.tpm = open('/dev/tpmrm0', 'r+b', buffering=0) def close(self): self.tpm.close()