From: Dmitry Safonov <dima@arista.com>
To: linux-kernel@vger.kernel.org
Cc: Andrei Vagin <avagin@gmail.com>, Dmitry Safonov <dima@arista.com>,
Adrian Reber <adrian@lisas.de>, Andrei Vagin <avagin@openvz.org>,
Andy Lutomirski <luto@kernel.org>,
Andy Tucker <agtucker@google.com>, Arnd Bergmann <arnd@arndb.de>,
Christian Brauner <christian.brauner@ubuntu.com>,
Cyrill Gorcunov <gorcunov@openvz.org>,
Dmitry Safonov <0x7f454c46@gmail.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Jeff Dike <jdike@addtoit.com>, Oleg Nesterov <oleg@redhat.com>,
Pavel Emelyanov <xemul@virtuozzo.com>,
Shuah Khan <shuah@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
containers@lists.linux-foundation.org, criu@openvz.org,
linux-api@vger.kernel.org, x86@kernel.org
Subject: [PATCH 25/32] selftest/timens: Add a test for timerfd
Date: Wed, 6 Feb 2019 00:10:59 +0000 [thread overview]
Message-ID: <20190206001107.16488-26-dima@arista.com> (raw)
In-Reply-To: <20190206001107.16488-1-dima@arista.com>
From: Andrei Vagin <avagin@gmail.com>
Check that timerfd_create() takes into account clock offsets.
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
---
tools/testing/selftests/timens/.gitignore | 1 +
tools/testing/selftests/timens/Makefile | 2 +-
tools/testing/selftests/timens/timerfd.c | 119 ++++++++++++++++++++++
3 files changed, 121 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..8ec2604d26c9
--- /dev/null
+++ b/tools/testing/selftests/timens/timerfd.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0
+#define _GNU_SOURCE
+#include <sched.h>
+
+#include <sys/timerfd.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#include "log.h"
+#include "timens.h"
+
+int run_test(int clockid, struct timespec now)
+{
+ struct itimerspec new_value;
+ long long elapsed;
+ int fd, i;
+
+ if (clock_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);
+
+ 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;
+}
+
--
2.20.1
next prev parent reply other threads:[~2019-02-06 0:12 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-06 0:10 [PATCH 00/32] kernel: Introduce Time Namespace Dmitry Safonov
2019-02-06 0:10 ` [PATCH 01/32] ns: " Dmitry Safonov
2019-02-06 0:10 ` [PATCH 02/32] timens: Add timens_offsets Dmitry Safonov
2019-02-06 0:10 ` [PATCH 03/32] timens: Introduce CLOCK_MONOTONIC offsets Dmitry Safonov
2019-02-07 21:40 ` Thomas Gleixner
2019-02-08 9:02 ` Andrei Vagin
2019-02-08 9:46 ` Thomas Gleixner
2019-02-06 0:10 ` [PATCH 04/32] timens: Introduce CLOCK_BOOTTIME offset Dmitry Safonov
2019-02-06 0:10 ` [PATCH 05/32] timerfd/timens: Take into account ns clock offsets Dmitry Safonov
2019-02-06 8:52 ` Cyrill Gorcunov
2019-02-06 8:55 ` Cyrill Gorcunov
2019-02-07 6:38 ` Andrei Vagin
2019-02-06 0:10 ` [PATCH 06/32] posix-timers/timens: Take into account " Dmitry Safonov
2019-02-06 0:10 ` [PATCH 07/32] timens/kernel: Take into account timens clock offsets in clock_nanosleep Dmitry Safonov
2019-02-08 7:56 ` Thomas Gleixner
2019-02-06 0:10 ` [PATCH 08/32] timens: Shift /proc/uptime Dmitry Safonov
2019-02-06 0:10 ` [PATCH 09/32] x86/vdso2c: Correct err messages on file opening Dmitry Safonov
2019-02-06 0:10 ` [PATCH 10/32] x86/vdso2c: Convert iterator to unsigned Dmitry Safonov
2019-02-06 0:10 ` [PATCH 11/32] x86/vdso/Makefile: Add vobjs32 Dmitry Safonov
2019-02-06 0:10 ` [PATCH 12/32] x86/vdso/timens: Add offsets page in vvar Dmitry Safonov
2019-02-06 0:10 ` [PATCH 13/32] x86/vdso: Build timens .so(s) Dmitry Safonov
2019-02-06 0:10 ` [PATCH 14/32] x86/VDSO: Build VDSO with -ffunction-sections Dmitry Safonov
2019-02-06 0:10 ` [PATCH 15/32] x86/vdso2c: Optionally produce linker script for vdso entries Dmitry Safonov
2019-02-06 0:10 ` [PATCH 16/32] x86/vdso: Generate vdso{,32}-timens.lds Dmitry Safonov
2019-02-07 8:31 ` Rasmus Villemoes
2019-02-07 16:11 ` Dmitry Safonov
2019-02-08 9:57 ` Thomas Gleixner
2019-02-08 15:18 ` Dmitry Safonov
2019-03-27 18:00 ` Andrei Vagin
2019-03-27 18:06 ` [PATCH RFC] x86/asm: Introduce static_retcall(s) Andrei Vagin
2019-03-27 18:06 ` [PATCH RFC] vdso: introduce timens_static_branch Andrei Vagin
2019-02-06 0:10 ` [PATCH 17/32] x86/vdso2c: Sort vdso entries by addresses for linker script Dmitry Safonov
2019-02-06 0:10 ` [PATCH 18/32] x86/vdso.lds: Align !timens (host's) vdso.so entries Dmitry Safonov
2019-02-06 0:10 ` [PATCH 19/32] x86/vdso2c: Align LOCAL symbols between vdso{-timens,}.so Dmitry Safonov
2019-02-06 0:10 ` [PATCH 20/32] x86/vdso: Initialize timens 64-bit vdso Dmitry Safonov
2019-02-06 0:10 ` [PATCH 21/32] x86/vdso: Switch image on setns()/unshare()/clone() Dmitry Safonov
2019-02-06 0:10 ` [PATCH 22/32] timens: Add align for timens_offsets Dmitry Safonov
2019-02-06 0:10 ` [PATCH 23/32] timens/fs/proc: Introduce /proc/pid/timens_offsets Dmitry Safonov
2019-02-06 0:10 ` [PATCH 24/32] selftest/timens: Add Time Namespace test for supported clocks Dmitry Safonov
2019-02-06 0:10 ` Dmitry Safonov [this message]
2019-02-06 0:11 ` [PATCH 26/32] selftest/timens: Add a test for clock_nanosleep() Dmitry Safonov
2019-02-06 0:11 ` [PATCH 27/32] selftest/timens: Add procfs selftest Dmitry Safonov
2019-02-06 0:11 ` [PATCH 28/32] selftest/timens: Add timer offsets test Dmitry Safonov
2019-02-06 0:11 ` [PATCH 29/32] selftests: Add a simple perf test for clock_gettime() Dmitry Safonov
2019-02-06 0:11 ` [PATCH 30/32] selftest/timens: Check that a right vdso is mapped after fork and exec Dmitry Safonov
2019-02-06 0:11 ` [PATCH 31/32] x86/vdso: Align VDSO functions by CPU L1 cache line Dmitry Safonov
2019-02-06 0:11 ` [PATCH 32/32] x86/vdso: Restrict splitting VVAR VMA Dmitry Safonov
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