From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 4F460C43219 for ; Thu, 25 Apr 2019 16:15:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 988B520651 for ; Thu, 25 Apr 2019 16:15:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=arista.com header.i=@arista.com header.b="NkXeXnP7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729337AbfDYQPh (ORCPT ); Thu, 25 Apr 2019 12:15:37 -0400 Received: from mail-ed1-f65.google.com ([209.85.208.65]:46638 "EHLO mail-ed1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728612AbfDYQOz (ORCPT ); Thu, 25 Apr 2019 12:14:55 -0400 Received: by mail-ed1-f65.google.com with SMTP id d1so348780edd.13 for ; Thu, 25 Apr 2019 09:14:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arista.com; s=googlenew; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UmCf8wag37vNu7AEAFU2cf0oYkwLGubPQNQhO2amoXE=; b=NkXeXnP764CiLrZDFYVSR6ma41oBj3SDnRVcO2wffHxpFdi7q1/EvwMXRGCOW2J1Zz pcvAPqfWzERQ3zNOX9enj9+CZmjEztMjdOHlgV5iIiF4I5bFAG7RwOffISKRMXcFN/Qp Zx3Zcmt9pdlHdp1UeZBtXaPCEw3lH5VWlBOwx96hI9qswomrm+9PIo8Y5KwxbxrGHcb+ YE7YZnd/4yrT5LElvMgy3z+GkjADJz/WpwtCtHeFTND3BZlco0zoGVWQBrSdD/s7NHxd ue4nVGxiSTXMh/XdIBxJmWuGkpbOmpa43yzP0tXz9S3t0SKWvJ9GyRpyTk/J6EEisNZu U5Gw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=UmCf8wag37vNu7AEAFU2cf0oYkwLGubPQNQhO2amoXE=; b=FHQTfH3mAGOqdeO0uVNLvE+ajuW7RDxQ0wSUPo7e447IMISlasD9wrWgnt+Vo087td d+XBvxWCpewoqUPPHgftCUSqek7zX02uHK9P3a1Ktoa6Jrrb6/5n0Ywxjq3P2HfuI02Z 6YwfxPgjJv5WX70MkBg/2gZIbaa6rezQT4HmDj/uP/BZFMz8Obv+RFXxjEfCWm7VwI98 mW86WAW7Ntr6FrNC/NH6EH/PXR4L9wCCUn+fTmGNhtqd4hWzHcHvn5i1sdbwkD4Q8kT0 ruiyR9YWvDcgdAnqxxOB66fiCdkoiOhxMSfvseHgjj+FBtWfeq2Lz394XOhohPc2u/p9 axVg== X-Gm-Message-State: APjAAAUYJzYE1Wtrc3rch3jlEC46LiosV3G3MJJiIxNCm5oysWg8wijI OK4a2VMVmp6BkvNhIJbhst65K0jNuRw= X-Google-Smtp-Source: APXvYqwLplz/l1jYUrIZWRw1QyTLlbE5K7ShfNRSYl3/SCsqSTSXbWlZmLqwx/n7i0VvJD2JjHUbYA== X-Received: by 2002:aa7:da18:: with SMTP id r24mr25390295eds.161.1556208893366; Thu, 25 Apr 2019 09:14:53 -0700 (PDT) Received: from Mindolluin.ire.aristanetworks.com ([217.173.96.166]) by smtp.gmail.com with ESMTPSA id br19sm4147042ejb.48.2019.04.25.09.14.51 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 25 Apr 2019 09:14:52 -0700 (PDT) From: Dmitry Safonov To: linux-kernel@vger.kernel.org Cc: Andrei Vagin , Dmitry Safonov , Adrian Reber , Andrei Vagin , Andy Lutomirski , Arnd Bergmann , Christian Brauner , Cyrill Gorcunov , Dmitry Safonov <0x7f454c46@gmail.com>, "Eric W. Biederman" , "H. Peter Anvin" , Ingo Molnar , Jeff Dike , Oleg Nesterov , Pavel Emelyanov , Shuah Khan , Thomas Gleixner , Vincenzo Frascino , containers@lists.linux-foundation.org, criu@openvz.org, linux-api@vger.kernel.org, x86@kernel.org Subject: [PATCHv3 21/27] selftest/timens: Add a test for timerfd Date: Thu, 25 Apr 2019 17:14:10 +0100 Message-Id: <20190425161416.26600-22-dima@arista.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190425161416.26600-1-dima@arista.com> References: <20190425161416.26600-1-dima@arista.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrei Vagin Check that timerfd_create() takes into account clock offsets. Signed-off-by: Andrei Vagin Signed-off-by: Dmitry Safonov --- tools/testing/selftests/timens/.gitignore | 1 + tools/testing/selftests/timens/Makefile | 2 +- tools/testing/selftests/timens/timerfd.c | 127 ++++++++++++++++++++++ 3 files changed, 129 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/timens/timerfd.c diff --git a/tools/testing/selftests/timens/.gitignore b/tools/testing/selftests/timens/.gitignore index 27a693229ce1..b609f6ee9fb9 100644 --- a/tools/testing/selftests/timens/.gitignore +++ b/tools/testing/selftests/timens/.gitignore @@ -1 +1,2 @@ timens +timerfd diff --git a/tools/testing/selftests/timens/Makefile b/tools/testing/selftests/timens/Makefile index b877efb78974..66b90cd28e5c 100644 --- a/tools/testing/selftests/timens/Makefile +++ b/tools/testing/selftests/timens/Makefile @@ -1,4 +1,4 @@ -TEST_GEN_PROGS := timens +TEST_GEN_PROGS := timens timerfd CFLAGS := -Wall -Werror diff --git a/tools/testing/selftests/timens/timerfd.c b/tools/testing/selftests/timens/timerfd.c new file mode 100644 index 000000000000..c9816db4fe79 --- /dev/null +++ b/tools/testing/selftests/timens/timerfd.c @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "log.h" +#include "timens.h" + +static int tclock_gettime(clock_t clockid, struct timespec *now) +{ + if (clockid == CLOCK_BOOTTIME_ALARM) + clockid = CLOCK_BOOTTIME; + return clock_gettime(clockid, now); +} + +int run_test(int clockid, struct timespec now) +{ + struct itimerspec new_value; + long long elapsed; + int fd, i; + + if (tclock_gettime(clockid, &now)) + return pr_perror("clock_gettime"); + + for (i = 0; i < 2; i++) { + int flags = 0; + + new_value.it_value.tv_sec = 3600; + new_value.it_value.tv_nsec = 0; + new_value.it_interval.tv_sec = 1; + new_value.it_interval.tv_nsec = 0; + + if (i == 1) { + new_value.it_value.tv_sec += now.tv_sec; + new_value.it_value.tv_nsec += now.tv_nsec; + } + + fd = timerfd_create(clockid, 0); + if (fd == -1) + return pr_perror("timerfd_create"); + + if (i == 1) + flags |= TFD_TIMER_ABSTIME; + + if (timerfd_settime(fd, flags, &new_value, NULL)) + return pr_perror("timerfd_settime"); + + if (timerfd_gettime(fd, &new_value)) + return pr_perror("timerfd_gettime"); + + elapsed = new_value.it_value.tv_sec; + if (abs(elapsed - 3600) > 60) { + ksft_test_result_fail("clockid: %d elapsed: %lld\n", + clockid, elapsed); + return 1; + } + + close(fd); + } + + ksft_test_result_pass("clockid=%d\n", clockid); + + return 0; +} + +int main(int argc, char *argv[]) +{ + int ret, status, len, fd; + char buf[4096]; + pid_t pid; + struct timespec btime_now, mtime_now; + + nscheck(); + + clock_gettime(CLOCK_MONOTONIC, &mtime_now); + clock_gettime(CLOCK_BOOTTIME, &btime_now); + + if (unshare(CLONE_NEWTIME)) + return pr_perror("unshare"); + + len = snprintf(buf, sizeof(buf), "%d %d 0\n%d %d 0", + CLOCK_MONOTONIC, 70 * 24 * 3600, + CLOCK_BOOTTIME, 9 * 24 * 3600); + fd = open("/proc/self/timens_offsets", O_WRONLY); + if (fd < 0) + return pr_perror("/proc/self/timens_offsets"); + + if (write(fd, buf, len) != len) + return pr_perror("/proc/self/timens_offsets"); + + close(fd); + mtime_now.tv_sec += 70 * 24 * 3600; + btime_now.tv_sec += 9 * 24 * 3600; + + pid = fork(); + if (pid < 0) + return pr_perror("Unable to fork"); + if (pid == 0) { + ret = 0; + ret |= run_test(CLOCK_BOOTTIME, btime_now); + ret |= run_test(CLOCK_MONOTONIC, mtime_now); + ret |= run_test(CLOCK_BOOTTIME_ALARM, btime_now); + + if (ret) + ksft_exit_fail(); + ksft_exit_pass(); + return ret; + } + + if (waitpid(pid, &status, 0) != pid) + return pr_perror("Unable to wait the child process"); + + if (WIFEXITED(status)) + return WEXITSTATUS(status); + + return 1; +} + -- 2.21.0