111873de3SAndrei Vagin // SPDX-License-Identifier: GPL-2.0
211873de3SAndrei Vagin #define _GNU_SOURCE
311873de3SAndrei Vagin #include <sched.h>
411873de3SAndrei Vagin
511873de3SAndrei Vagin #include <sys/timerfd.h>
611873de3SAndrei Vagin #include <sys/syscall.h>
711873de3SAndrei Vagin #include <sys/types.h>
811873de3SAndrei Vagin #include <sys/wait.h>
911873de3SAndrei Vagin #include <time.h>
1011873de3SAndrei Vagin #include <unistd.h>
1111873de3SAndrei Vagin #include <stdlib.h>
1211873de3SAndrei Vagin #include <stdio.h>
1311873de3SAndrei Vagin #include <stdint.h>
1411873de3SAndrei Vagin
1511873de3SAndrei Vagin #include "log.h"
1611873de3SAndrei Vagin #include "timens.h"
1711873de3SAndrei Vagin
tclock_gettime(clock_t clockid,struct timespec * now)1811873de3SAndrei Vagin static int tclock_gettime(clock_t clockid, struct timespec *now)
1911873de3SAndrei Vagin {
2011873de3SAndrei Vagin if (clockid == CLOCK_BOOTTIME_ALARM)
2111873de3SAndrei Vagin clockid = CLOCK_BOOTTIME;
2211873de3SAndrei Vagin return clock_gettime(clockid, now);
2311873de3SAndrei Vagin }
2411873de3SAndrei Vagin
run_test(int clockid,struct timespec now)2511873de3SAndrei Vagin int run_test(int clockid, struct timespec now)
2611873de3SAndrei Vagin {
2711873de3SAndrei Vagin struct itimerspec new_value;
2811873de3SAndrei Vagin long long elapsed;
2911873de3SAndrei Vagin int fd, i;
3011873de3SAndrei Vagin
31558ae035SAndrei Vagin if (check_skip(clockid))
32558ae035SAndrei Vagin return 0;
33558ae035SAndrei Vagin
3411873de3SAndrei Vagin if (tclock_gettime(clockid, &now))
3511873de3SAndrei Vagin return pr_perror("clock_gettime(%d)", clockid);
3611873de3SAndrei Vagin
3711873de3SAndrei Vagin for (i = 0; i < 2; i++) {
3811873de3SAndrei Vagin int flags = 0;
3911873de3SAndrei Vagin
4011873de3SAndrei Vagin new_value.it_value.tv_sec = 3600;
4111873de3SAndrei Vagin new_value.it_value.tv_nsec = 0;
4211873de3SAndrei Vagin new_value.it_interval.tv_sec = 1;
4311873de3SAndrei Vagin new_value.it_interval.tv_nsec = 0;
4411873de3SAndrei Vagin
4511873de3SAndrei Vagin if (i == 1) {
4611873de3SAndrei Vagin new_value.it_value.tv_sec += now.tv_sec;
4711873de3SAndrei Vagin new_value.it_value.tv_nsec += now.tv_nsec;
4811873de3SAndrei Vagin }
4911873de3SAndrei Vagin
5011873de3SAndrei Vagin fd = timerfd_create(clockid, 0);
5111873de3SAndrei Vagin if (fd == -1)
5211873de3SAndrei Vagin return pr_perror("timerfd_create(%d)", clockid);
5311873de3SAndrei Vagin
5411873de3SAndrei Vagin if (i == 1)
5511873de3SAndrei Vagin flags |= TFD_TIMER_ABSTIME;
5611873de3SAndrei Vagin
5711873de3SAndrei Vagin if (timerfd_settime(fd, flags, &new_value, NULL))
5811873de3SAndrei Vagin return pr_perror("timerfd_settime(%d)", clockid);
5911873de3SAndrei Vagin
6011873de3SAndrei Vagin if (timerfd_gettime(fd, &new_value))
6111873de3SAndrei Vagin return pr_perror("timerfd_gettime(%d)", clockid);
6211873de3SAndrei Vagin
6311873de3SAndrei Vagin elapsed = new_value.it_value.tv_sec;
64*69f6e9beSJohn Hubbard if (llabs(elapsed - 3600) > 60) {
6511873de3SAndrei Vagin ksft_test_result_fail("clockid: %d elapsed: %lld\n",
6611873de3SAndrei Vagin clockid, elapsed);
6711873de3SAndrei Vagin return 1;
6811873de3SAndrei Vagin }
6911873de3SAndrei Vagin
7011873de3SAndrei Vagin close(fd);
7111873de3SAndrei Vagin }
7211873de3SAndrei Vagin
7311873de3SAndrei Vagin ksft_test_result_pass("clockid=%d\n", clockid);
7411873de3SAndrei Vagin
7511873de3SAndrei Vagin return 0;
7611873de3SAndrei Vagin }
7711873de3SAndrei Vagin
main(int argc,char * argv[])7811873de3SAndrei Vagin int main(int argc, char *argv[])
7911873de3SAndrei Vagin {
8011873de3SAndrei Vagin int ret, status, len, fd;
8111873de3SAndrei Vagin char buf[4096];
8211873de3SAndrei Vagin pid_t pid;
8311873de3SAndrei Vagin struct timespec btime_now, mtime_now;
8411873de3SAndrei Vagin
8511873de3SAndrei Vagin nscheck();
8611873de3SAndrei Vagin
87558ae035SAndrei Vagin check_supported_timers();
88558ae035SAndrei Vagin
8911873de3SAndrei Vagin ksft_set_plan(3);
9011873de3SAndrei Vagin
9111873de3SAndrei Vagin clock_gettime(CLOCK_MONOTONIC, &mtime_now);
9211873de3SAndrei Vagin clock_gettime(CLOCK_BOOTTIME, &btime_now);
9311873de3SAndrei Vagin
9411873de3SAndrei Vagin if (unshare_timens())
9511873de3SAndrei Vagin return 1;
9611873de3SAndrei Vagin
9711873de3SAndrei Vagin len = snprintf(buf, sizeof(buf), "%d %d 0\n%d %d 0",
9811873de3SAndrei Vagin CLOCK_MONOTONIC, 70 * 24 * 3600,
9911873de3SAndrei Vagin CLOCK_BOOTTIME, 9 * 24 * 3600);
10011873de3SAndrei Vagin fd = open("/proc/self/timens_offsets", O_WRONLY);
10111873de3SAndrei Vagin if (fd < 0)
10211873de3SAndrei Vagin return pr_perror("/proc/self/timens_offsets");
10311873de3SAndrei Vagin
10411873de3SAndrei Vagin if (write(fd, buf, len) != len)
10511873de3SAndrei Vagin return pr_perror("/proc/self/timens_offsets");
10611873de3SAndrei Vagin
10711873de3SAndrei Vagin close(fd);
10811873de3SAndrei Vagin mtime_now.tv_sec += 70 * 24 * 3600;
10911873de3SAndrei Vagin btime_now.tv_sec += 9 * 24 * 3600;
11011873de3SAndrei Vagin
11111873de3SAndrei Vagin pid = fork();
11211873de3SAndrei Vagin if (pid < 0)
11311873de3SAndrei Vagin return pr_perror("Unable to fork");
11411873de3SAndrei Vagin if (pid == 0) {
11511873de3SAndrei Vagin ret = 0;
11611873de3SAndrei Vagin ret |= run_test(CLOCK_BOOTTIME, btime_now);
11711873de3SAndrei Vagin ret |= run_test(CLOCK_MONOTONIC, mtime_now);
11811873de3SAndrei Vagin ret |= run_test(CLOCK_BOOTTIME_ALARM, btime_now);
11911873de3SAndrei Vagin
12011873de3SAndrei Vagin if (ret)
12111873de3SAndrei Vagin ksft_exit_fail();
12211873de3SAndrei Vagin ksft_exit_pass();
12311873de3SAndrei Vagin return ret;
12411873de3SAndrei Vagin }
12511873de3SAndrei Vagin
12611873de3SAndrei Vagin if (waitpid(pid, &status, 0) != pid)
12711873de3SAndrei Vagin return pr_perror("Unable to wait the child process");
12811873de3SAndrei Vagin
12911873de3SAndrei Vagin if (WIFEXITED(status))
13011873de3SAndrei Vagin return WEXITSTATUS(status);
13111873de3SAndrei Vagin
13211873de3SAndrei Vagin return 1;
13311873de3SAndrei Vagin }
134