1 // SPDX-License-Identifier: GPL-2.0
5 #include <sys/timerfd.h>
6 #include <sys/syscall.h>
19 void test_sig(int sig)
26 struct timespec *now, *rem;
27 pthread_mutex_t *lock;
32 void *call_nanosleep(void *_args)
34 struct thread_args *args = _args;
36 clock_nanosleep(args->clockid, args->abs ? TIMER_ABSTIME : 0, args->now, args->rem);
37 pthread_mutex_unlock(args->lock);
41 int run_test(int clockid, int abs)
43 struct timespec now = {}, rem;
44 struct thread_args args = { .now = &now, .rem = &rem, .clockid = clockid};
45 struct timespec start;
50 signal(SIGUSR1, test_sig);
51 signal(SIGUSR2, test_sig);
53 pthread_mutex_init(&lock, NULL);
54 pthread_mutex_lock(&lock);
56 if (clock_gettime(clockid, &start) == -1) {
57 if (errno == EINVAL && check_skip(clockid))
59 return pr_perror("clock_gettime");
64 now.tv_sec = start.tv_sec;
65 now.tv_nsec = start.tv_nsec;
71 ret = pthread_create(&thread, NULL, call_nanosleep, &args);
73 pr_err("Unable to create a thread: %s", strerror(ret));
77 /* Wait when the thread will call clock_nanosleep(). */
79 for (j = 0; j < 8; j++) {
80 /* The maximum timeout is about 5 seconds. */
83 /* Try to interrupt clock_nanosleep(). */
84 pthread_kill(thread, SIGUSR1);
87 /* Check whether clock_nanosleep() has been interrupted or not. */
88 if (pthread_mutex_trylock(&lock) == 0) {
95 pthread_kill(thread, SIGUSR2);
96 pthread_join(thread, NULL);
97 pthread_mutex_destroy(&lock);
100 ksft_test_result_pass("clockid: %d abs:%d timeout\n", clockid, abs);
104 if (rem.tv_sec < 3300 || rem.tv_sec > 3900) {
105 pr_fail("clockid: %d abs: %d remain: %ld\n",
106 clockid, abs, rem.tv_sec);
109 ksft_test_result_pass("clockid: %d abs:%d\n", clockid, abs);
114 int main(int argc, char *argv[])
122 check_supported_timers();
124 if (unshare_timens())
127 if (_settime(CLOCK_MONOTONIC, 7 * 24 * 3600))
129 if (_settime(CLOCK_BOOTTIME, 9 * 24 * 3600))
132 nsfd = open("/proc/self/ns/time_for_children", O_RDONLY);
134 return pr_perror("Unable to open timens_for_children");
136 if (setns(nsfd, CLONE_NEWTIME))
137 return pr_perror("Unable to set timens");
140 ret |= run_test(CLOCK_MONOTONIC, 0);
141 ret |= run_test(CLOCK_MONOTONIC, 1);
142 ret |= run_test(CLOCK_BOOTTIME_ALARM, 0);
143 ret |= run_test(CLOCK_BOOTTIME_ALARM, 1);