From: Dmitry Safonov <dima@arista.com>
To: linux-kernel@vger.kernel.org
Cc: Dmitry Safonov <0x7f454c46@gmail.com>,
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>, Arnd Bergmann <arnd@arndb.de>,
Christian Brauner <christian.brauner@ubuntu.com>,
Cyrill Gorcunov <gorcunov@openvz.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Jann Horn <jannh@google.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>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
containers@lists.linux-foundation.org, criu@openvz.org,
linux-api@vger.kernel.org, x86@kernel.org
Subject: [PATCHv8 29/34] selftests/timens: Add a test for timerfd
Date: Tue, 12 Nov 2019 01:27:18 +0000 [thread overview]
Message-ID: <20191112012724.250792-30-dima@arista.com> (raw)
In-Reply-To: <20191112012724.250792-1-dima@arista.com>
From: Andrei Vagin <avagin@gmail.com>
Check that timerfd_create() takes into account clock offsets.
Output on success:
1..3
ok 1 clockid=7
ok 2 clockid=1
ok 3 clockid=9
# Pass 3 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0
Output on failure:
1..3
not ok 1 clockid: 7 elapsed: 0
not ok 2 clockid: 1 elapsed: 0
not ok 3 clockid: 9 elapsed: 0
Bail out!
Output with lack of permissions:
1..3
not ok 1 # SKIP need to run as root
Output without support of time namespaces:
1..3
not ok 1 # SKIP Time namespaces are not supported
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Co-developed-by: Dmitry Safonov <dima@arista.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 | 129 ++++++++++++++++++++++
3 files changed, 131 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 49a9dcc26c3a..293aed6be95e 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
LDFLAGS := -lrt
diff --git a/tools/testing/selftests/timens/timerfd.c b/tools/testing/selftests/timens/timerfd.c
new file mode 100644
index 000000000000..619b096b7fe5
--- /dev/null
+++ b/tools/testing/selftests/timens/timerfd.c
@@ -0,0 +1,129 @@
+// 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"
+
+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(%d)", clockid);
+
+ 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(%d)", clockid);
+
+ if (i == 1)
+ flags |= TFD_TIMER_ABSTIME;
+
+ if (timerfd_settime(fd, flags, &new_value, NULL))
+ return pr_perror("timerfd_settime(%d)", clockid);
+
+ if (timerfd_gettime(fd, &new_value))
+ return pr_perror("timerfd_gettime(%d)", clockid);
+
+ 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();
+
+ ksft_set_plan(3);
+
+ clock_gettime(CLOCK_MONOTONIC, &mtime_now);
+ clock_gettime(CLOCK_BOOTTIME, &btime_now);
+
+ if (unshare_timens())
+ return 1;
+
+ 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;
+}
+
--
2.24.0
next prev parent reply other threads:[~2019-11-12 1:28 UTC|newest]
Thread overview: 124+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-12 1:26 [PATCHv8 00/34] kernel: Introduce Time Namespace Dmitry Safonov
2019-11-12 1:26 ` [PATCHv8 01/34] lib/vdso: Add unlikely() hint into vdso_read_begin() Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:26 ` [PATCHv8 02/34] lib/vdso: make do_hres and do_coarse as __always_inline Dmitry Safonov
2020-01-10 9:45 ` Vincenzo Frascino
2020-01-10 11:42 ` Thomas Gleixner
2020-01-10 11:47 ` Vincenzo Frascino
2020-01-10 12:02 ` Thomas Gleixner
2020-01-10 12:18 ` Vincenzo Frascino
2020-01-13 5:27 ` Andrei Vagin
2020-01-13 19:09 ` [tip: timers/core] lib/vdso: Mark do_hres() and do_coarse() " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:26 ` [PATCHv8 03/34] ns: Introduce Time Namespace Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2020-01-27 14:12 ` [PATCHv8 03/34] " Dmitry Vyukov
2020-01-27 14:19 ` Dmitry Safonov
2020-02-17 14:20 ` Time Namespaces: CLONE_NEWTIME and clone3()? Michael Kerrisk
2020-02-17 14:59 ` Christian Brauner
2020-02-17 21:47 ` Michael Kerrisk (man-pages)
2020-02-17 23:03 ` Christian Brauner
2020-02-17 23:29 ` Thomas Gleixner
2020-02-18 2:37 ` Eric W. Biederman
2020-02-18 17:11 ` Adrian Reber
2020-02-18 17:26 ` Christian Brauner
2019-11-12 1:26 ` [PATCHv8 04/34] time: Add timens_offsets to be used for tasks in timens Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] time: Add timens_offsets to be used for tasks in time namespace tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:26 ` [PATCHv8 05/34] posix-clocks: Rename the clock_get() callback to clock_get_timespec() Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:26 ` [PATCHv8 06/34] posix-clocks: Rename .clock_get_timespec() callbacks accordingly Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:26 ` [PATCHv8 07/34] alarmtimer: Rename gettime() callback to get_ktime() Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:26 ` [PATCHv8 08/34] alarmtimer: Provide get_timespec() callback Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:26 ` [PATCHv8 09/34] posix-clocks: Introduce clock_get_ktime() callback Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:26 ` [PATCHv8 10/34] posix-timers: Use clock_get_ktime() in common_timer_get() Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 11/34] posix-clocks: Wire up clock_gettime() with timens offsets Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 12/34] kernel: Add do_timens_ktime_to_host() helper Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] time: " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 13/34] timerfd: Make timerfd_settime() time namespace aware Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 14/34] posix-timers: Make timer_settime() " Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 15/34] alarmtimer: Make nanosleep " Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] alarmtimer: Make nanosleep() " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 16/34] hrtimers: Prepare hrtimer_nanosleep() for time namespaces Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 17/34] posix-timers: Make clock_nanosleep() time namespace aware Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 18/34] fs/proc: Respect boottime inside time namespace for /proc/uptime Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 19/34] x86/vdso: Restrict splitting VVAR VMA Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 20/34] lib/vdso: Prepare for time namespace support Dmitry Safonov
2020-01-12 10:32 ` Thomas Gleixner
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Thomas Gleixner
2020-01-14 13:02 ` tip-bot2 for Thomas Gleixner
2019-11-12 1:27 ` [PATCHv8 21/34] x86/vdso: Provide vdso_data offset on vvar_page Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 22/34] x86/vdso: Add timens page Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] x86/vdso: Add time napespace page tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 23/34] time: Allocate per-timens vvar page Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 24/34] x86/vdso: Handle faults on timens page Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 25/34] x86/vdso: On timens page fault prefault also VVAR page Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 26/34] x86/vdso: Zap vvar pages on switch a time namspace Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] x86/vdso: Zap vvar pages when switching to a time namespace tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 27/34] fs/proc: Introduce /proc/pid/timens_offsets Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 28/34] selftests/timens: Add Time Namespace test for supported clocks Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` Dmitry Safonov [this message]
2020-01-13 19:09 ` [tip: timers/core] selftests/timens: Add a test for timerfd tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 30/34] selftests/timens: Add a test for clock_nanosleep() Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 31/34] selftests/timens: Add procfs selftest Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Dmitry Safonov
2020-01-14 13:02 ` tip-bot2 for Dmitry Safonov
2019-11-12 1:27 ` [PATCHv8 32/34] selftests/timens: Add timer offsets test Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 33/34] selftests/timens: Add a simple perf test for clock_gettime() Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-12 1:27 ` [PATCHv8 34/34] selftests/timens: Check for right timens offsets after fork and exec Dmitry Safonov
2020-01-13 19:09 ` [tip: timers/core] " tip-bot2 for Andrei Vagin
2020-01-14 13:02 ` tip-bot2 for Andrei Vagin
2019-11-21 18:05 ` [PATCHv8 00/34] kernel: Introduce Time Namespace Andrei Vagin
2019-12-11 20:38 ` Dmitry Safonov
2020-01-09 21:09 ` Thomas Gleixner
2020-01-10 9:52 ` Vincenzo Frascino
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