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: 10808939 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 70FCE1390 for ; Tue, 12 Feb 2019 23:42:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5CD402C080 for ; Tue, 12 Feb 2019 23:42:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4D5082C083; Tue, 12 Feb 2019 23:42:08 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham 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 E2C612C080 for ; Tue, 12 Feb 2019 23:42:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732170AbfBLXmH (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: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org 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() From patchwork Tue Feb 12 23:42:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tadeusz Struk X-Patchwork-Id: 10808945 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 168A313A4 for ; Tue, 12 Feb 2019 23:42:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 03E822C082 for ; Tue, 12 Feb 2019 23:42:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EC3212C0AD; Tue, 12 Feb 2019 23:42:18 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham 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 81C1F2C082 for ; Tue, 12 Feb 2019 23:42:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732291AbfBLXmM (ORCPT ); Tue, 12 Feb 2019 18:42:12 -0500 Received: from mga01.intel.com ([192.55.52.88]:56264 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732237AbfBLXmL (ORCPT ); Tue, 12 Feb 2019 18:42:11 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Feb 2019 15:42:10 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,362,1544515200"; d="scan'208";a="125983266" Received: from tstruk-mobl1.jf.intel.com ([10.7.196.160]) by orsmga003.jf.intel.com with ESMTP; 12 Feb 2019 15:42:10 -0800 Subject: [PATCH v2 2/2] selftests/tpm2: Extend tests to cover partial reads 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 15:42:10 -0800 Message-ID: <155001493022.13014.6810778681032295955.stgit@tstruk-mobl1.jf.intel.com> In-Reply-To: <155001492513.13014.3572730050393346659.stgit@tstruk-mobl1.jf.intel.com> References: <155001492513.13014.3572730050393346659.stgit@tstruk-mobl1.jf.intel.com> User-Agent: StGit/unknown-version MIME-Version: 1.0 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Three new tests added: 1. Send get random cmd, read header in 1st read, read the rest in second read - expect success 2. Send get random cmd, read only part of the response, send another get random command, read the response - expect success 3. Send get random cmd followed by another get random cmd, without reading the first response - expect the second cmd to fail with -EBUSY Signed-off-by: Tadeusz Struk Tested-by: Jarkko Sakkinen --- v2: - Removed extra logging - Changed subject tag to selftest/tpm2: --- tools/testing/selftests/tpm2/tpm2.py | 1 tools/testing/selftests/tpm2/tpm2_tests.py | 66 ++++++++++++++++++++++++++++ 2 files changed, 67 insertions(+) diff --git a/tools/testing/selftests/tpm2/tpm2.py b/tools/testing/selftests/tpm2/tpm2.py index c2b9f2b1a0ac..828c18584624 100644 --- a/tools/testing/selftests/tpm2/tpm2.py +++ b/tools/testing/selftests/tpm2/tpm2.py @@ -22,6 +22,7 @@ TPM2_CC_UNSEAL = 0x015E TPM2_CC_FLUSH_CONTEXT = 0x0165 TPM2_CC_START_AUTH_SESSION = 0x0176 TPM2_CC_GET_CAPABILITY = 0x017A +TPM2_CC_GET_RANDOM = 0x017B TPM2_CC_PCR_READ = 0x017E TPM2_CC_POLICY_PCR = 0x017F TPM2_CC_PCR_EXTEND = 0x0182 diff --git a/tools/testing/selftests/tpm2/tpm2_tests.py b/tools/testing/selftests/tpm2/tpm2_tests.py index 3bb066fea4a0..e82d84043c3f 100644 --- a/tools/testing/selftests/tpm2/tpm2_tests.py +++ b/tools/testing/selftests/tpm2/tpm2_tests.py @@ -158,6 +158,72 @@ class SmokeTest(unittest.TestCase): pass self.assertEqual(rejected, True) + def test_read_partial_resp(self): + """Reads random in two subsequent reads""" + try: + fmt = '>HIIH' + cmd = struct.pack(fmt, + tpm2.TPM2_ST_NO_SESSIONS, + struct.calcsize(fmt), + tpm2.TPM2_CC_GET_RANDOM, + 0x20) + self.client.tpm.write(cmd) + hdr = self.client.tpm.read(10) + sz = struct.unpack('>I', hdr[2:6])[0] + rsp = self.client.tpm.read() + except: + pass + self.assertEqual(sz, 10 + 2 + 32) + self.assertEqual(len(rsp), 2 + 32) + + def test_read_partial_overwrite(self): + """Reads only part of the response and issue a new cmd""" + try: + fmt = '>HIIH' + cmd = struct.pack(fmt, + tpm2.TPM2_ST_NO_SESSIONS, + struct.calcsize(fmt), + tpm2.TPM2_CC_GET_RANDOM, + 0x20) + self.client.tpm.write(cmd) + # Read part of the respone + rsp1 = self.client.tpm.read(15) + + # Send a new cmd + self.client.tpm.write(cmd) + + # Read the whole respone + rsp2 = self.client.tpm.read() + except: + pass + self.assertEqual(len(rsp1), 15) + self.assertEqual(len(rsp2), 10 + 2 + 32) + + def test_send_two_cmds(self): + """Send two cmds without reading a response""" + rejected = False + try: + fmt = '>HIIH' + cmd = struct.pack(fmt, + tpm2.TPM2_ST_NO_SESSIONS, + struct.calcsize(fmt), + tpm2.TPM2_CC_GET_RANDOM, + 0x20) + self.client.tpm.write(cmd) + + # expect the second one to raise -EBUSY error + self.client.tpm.write(cmd) + rsp = self.client.tpm.read() + + except IOError, e: + # read the response + rsp = self.client.tpm.read() + rejected = True + pass + except: + pass + self.assertEqual(rejected, True) + class SpaceTest(unittest.TestCase): def setUp(self): logging.basicConfig(filename='SpaceTest.log', level=logging.DEBUG)