From patchwork Wed Jan 20 13:41:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Majewski X-Patchwork-Id: 41767 X-Patchwork-Delegate: azanella@linux.vnet.ibm.com Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 0C6B3385780E; Wed, 20 Jan 2021 13:42:01 +0000 (GMT) X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.9]) by sourceware.org (Postfix) with ESMTPS id 81B7E3858026 for ; Wed, 20 Jan 2021 13:41:57 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 81B7E3858026 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: sourceware.org; spf=none smtp.mailfrom=lukma@denx.de Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4DLRX26gKPz1qt3n; Wed, 20 Jan 2021 14:41:54 +0100 (CET) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4DLRX24zHkz1r2xm; Wed, 20 Jan 2021 14:41:54 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id c5Eg9zxDx3JI; Wed, 20 Jan 2021 14:41:52 +0100 (CET) X-Auth-Info: 8jIsNs1SgkfkHJ8LqvHSvhFzifc+Na3a6A27xkJK2Kg= Received: from localhost.localdomain (89-64-25-12.dynamic.chello.pl [89.64.25.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Wed, 20 Jan 2021 14:41:52 +0100 (CET) From: Lukasz Majewski To: Joseph Myers , Adhemerval Zanella , Florian Weimer Subject: [PATCH] tst: Add test for clock_adjtime Date: Wed, 20 Jan 2021 14:41:39 +0100 Message-Id: <20210120134139.8497-1-lukma@denx.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-Spam-Status: No, score=-11.2 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, KAM_SHORT, RCVD_IN_BARRACUDACENTRAL, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: GNU C Library , Florian Weimer , Alistair Francis Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" This code brings test to check if time on target machine is properly adjusted. The time is altered only when cross-test-ssh.sh is executed with --allow-time-setting flag As the delta added to CLOCK_REALTIME is only 1ms the original time is not restored and further tests are executed with this bias. --- time/Makefile | 3 +- time/tst-clock_adjtime.c | 61 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 63 insertions(+), 1 deletion(-) create mode 100644 time/tst-clock_adjtime.c diff --git a/time/Makefile b/time/Makefile index e469cacb4a..43e5821adc 100644 --- a/time/Makefile +++ b/time/Makefile @@ -50,7 +50,8 @@ tests := test_time clocktest tst-posixtz tst-strptime tst_wcsftime \ tst-tzname tst-y2039 bug-mktime4 tst-strftime2 tst-strftime3 \ tst-clock tst-clock2 tst-clock_nanosleep tst-cpuclock1 \ tst-adjtime tst-clock-y2038 tst-clock2-y2038 \ - tst-cpuclock1-y2038 tst-clock_nanosleep-y2038 tst-clock_settime + tst-cpuclock1-y2038 tst-clock_nanosleep-y2038 tst-clock_settime \ + tst-clock_adjtime include ../Rules diff --git a/time/tst-clock_adjtime.c b/time/tst-clock_adjtime.c new file mode 100644 index 0000000000..ece68acc5f --- /dev/null +++ b/time/tst-clock_adjtime.c @@ -0,0 +1,61 @@ +/* Test for clock_adjtime + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include +#include +#include + +static int +do_test (void) +{ + struct timespec tv_then, tv_now; + struct timex delta; + + /* Check if altering target time is allowed. */ + if (getenv (SETTIME_ENV_NAME) == NULL) + FAIL_UNSUPPORTED ("clock_adjtime is executed only when "\ + SETTIME_ENV_NAME" is set\n"); + + tv_then = xclock_now (CLOCK_REALTIME); + + /* Setup time value to adjust - 1 ms. */ + delta.time.tv_sec = 0; + delta.time.tv_usec = 1000; + delta.modes = ADJ_SETOFFSET; + + int ret = clock_adjtime (CLOCK_REALTIME, &delta); + if (ret == -1) + FAIL_EXIT1 ("*** clock_adjtime failed: %m\n"); + + tv_now = xclock_now (CLOCK_REALTIME); + + /* Check difference between timerfd_gettime calls. */ + long long int diff = tv_now.tv_sec - tv_then.tv_sec; + diff *= 1000000000; + diff += tv_now.tv_nsec - tv_then.tv_nsec; + /* The adjustment cannot be large than 10 ms. */ + if (diff > 10000000) + FAIL_EXIT1 ("clock_adjtime set wrong time!\n"); + + return 0; +} + +#include