From patchwork Sat Dec 16 17:41:46 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 10117361 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C301260231 for ; Sat, 16 Dec 2017 18:08:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A7CD928DBA for ; Sat, 16 Dec 2017 18:08:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 996B42933E; Sat, 16 Dec 2017 18:08:40 +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=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4558328DBA for ; Sat, 16 Dec 2017 18:08:40 +0000 (UTC) Received: from localhost ([::1]:51626 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eQGt5-0000iR-Ic for patchwork-qemu-devel@patchwork.kernel.org; Sat, 16 Dec 2017 13:08:39 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46130) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eQGU4-0006QI-Cp for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:52 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eQGU0-0000L4-FO for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:48 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:44470) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eQGU0-0000Kc-6q for qemu-devel@nongnu.org; Sat, 16 Dec 2017 12:42:44 -0500 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vBGHfRs6018611 for ; Sat, 16 Dec 2017 12:42:43 -0500 Received: from e33.co.us.ibm.com (e33.co.us.ibm.com [32.97.110.151]) by mx0a-001b2d01.pphosted.com with ESMTP id 2evypbch42-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Sat, 16 Dec 2017 12:42:42 -0500 Received: from localhost by e33.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Sat, 16 Dec 2017 10:42:41 -0700 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp07029.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id vBGHgeaZ9240998; Sat, 16 Dec 2017 10:42:40 -0700 Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CD2E26E040; Sat, 16 Dec 2017 10:42:40 -0700 (MST) Received: from sbct-3.watson.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP id 73ACF6E035; Sat, 16 Dec 2017 10:42:40 -0700 (MST) From: Stefan Berger To: qemu-devel@nongnu.org Date: Sat, 16 Dec 2017 12:41:46 -0500 X-Mailer: git-send-email 2.5.5 In-Reply-To: <1513446109-9013-1-git-send-email-stefanb@linux.vnet.ibm.com> References: <1513446109-9013-1-git-send-email-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 17121617-0008-0000-0000-0000090AD31A X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008213; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000244; SDB=6.00961141; UDB=6.00486146; IPR=6.00741136; BA=6.00005744; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00018575; XFM=3.00000015; UTC=2017-12-16 17:42:42 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17121617-0009-0000-0000-0000452E56B2 Message-Id: <1513446109-9013-30-git-send-email-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-12-16_11:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1712160265 X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-001b2d01.pphosted.com id vBGHfRs6018611 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PULL v1 29/32] tpm: pull tpm_util_request() out of tpm_util_test() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, Stefan Berger Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Stefan Berger Reviewed-by: Marc-André Lureau --- hw/tpm/tpm_util.c | 40 +++++++++++++++++++++++++++++++--------- 1 file changed, 31 insertions(+), 9 deletions(-) diff --git a/hw/tpm/tpm_util.c b/hw/tpm/tpm_util.c index daf1faa..b852f53 100644 --- a/hw/tpm/tpm_util.c +++ b/hw/tpm/tpm_util.c @@ -50,13 +50,13 @@ bool tpm_util_is_selftest(const uint8_t *in, uint32_t in_len) } /* - * A basic test of a TPM device. We expect a well formatted response header - * (error response is fine) within one second. + * Send request to a TPM device. We expect a response within one second. */ -static int tpm_util_test(int fd, - unsigned char *request, - size_t requestlen, - uint16_t *return_tag) +static int tpm_util_request(int fd, + unsigned char *request, + size_t requestlen, + unsigned char *response, + size_t responselen) { struct tpm_resp_hdr *resp; fd_set readfds; @@ -65,7 +65,6 @@ static int tpm_util_test(int fd, .tv_sec = 1, .tv_usec = 0, }; - unsigned char buf[1024]; n = write(fd, request, requestlen); if (n < 0) { @@ -84,17 +83,40 @@ static int tpm_util_test(int fd, return -errno; } - n = read(fd, &buf, sizeof(buf)); + n = read(fd, response, responselen); if (n < sizeof(struct tpm_resp_hdr)) { return -EFAULT; } - resp = (struct tpm_resp_hdr *)buf; + resp = (struct tpm_resp_hdr *)response; /* check the header */ if (be32_to_cpu(resp->len) != n) { return -EMSGSIZE; } + return 0; +} + +/* + * A basic test of a TPM device. We expect a well formatted response header + * (error response is fine). + */ +static int tpm_util_test(int fd, + unsigned char *request, + size_t requestlen, + uint16_t *return_tag) +{ + struct tpm_resp_hdr *resp; + unsigned char buf[1024]; + ssize_t ret; + + ret = tpm_util_request(fd, request, requestlen, + buf, sizeof(buf)); + if (ret < 0) { + return ret; + } + + resp = (struct tpm_resp_hdr *)buf; *return_tag = be16_to_cpu(resp->tag); return 0;