| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | #define _GNU_SOURCE |
| 3 | #include <sched.h> |
| 4 | |
| 5 | #include <sys/syscall.h> |
| 6 | #include <sys/types.h> |
| 7 | #include <sys/wait.h> |
| 8 | #include <time.h> |
| 9 | #include <unistd.h> |
| 10 | #include <stdlib.h> |
| 11 | #include <stdio.h> |
| 12 | #include <stdint.h> |
| 13 | #include <signal.h> |
| 14 | |
| 15 | #include "log.h" |
| 16 | #include "timens.h" |
| 17 | |
| 18 | int run_test(int clockid, struct timespec now) |
| 19 | { |
| 20 | struct itimerspec new_value; |
| 21 | long long elapsed; |
| 22 | timer_t fd; |
| 23 | int i; |
| 24 | |
| 25 | if (check_skip(clockid)) |
| 26 | return 0; |
| 27 | |
| 28 | for (i = 0; i < 2; i++) { |
| 29 | struct sigevent sevp = {.sigev_notify = SIGEV_NONE}; |
| 30 | int flags = 0; |
| 31 | |
| 32 | new_value.it_value.tv_sec = 3600; |
| 33 | new_value.it_value.tv_nsec = 0; |
| 34 | new_value.it_interval.tv_sec = 1; |
| 35 | new_value.it_interval.tv_nsec = 0; |
| 36 | |
| 37 | if (i == 1) { |
| 38 | new_value.it_value.tv_sec += now.tv_sec; |
| 39 | new_value.it_value.tv_nsec += now.tv_nsec; |
| 40 | } |
| 41 | |
| 42 | if (timer_create(clockid, &sevp, &fd) == -1) { |
| 43 | if (errno == ENOSYS) { |
| 44 | ksft_test_result_skip("Posix Clocks & timers are supported\n"); |
| 45 | return 0; |
| 46 | } |
| 47 | return pr_perror("timerfd_create"); |
| 48 | } |
| 49 | |
| 50 | if (i == 1) |
| 51 | flags |= TIMER_ABSTIME; |
| 52 | if (timer_settime(fd, flags, &new_value, NULL) == -1) |
| 53 | return pr_perror("timerfd_settime"); |
| 54 | |
| 55 | if (timer_gettime(fd, &new_value) == -1) |
| 56 | return pr_perror("timerfd_gettime"); |
| 57 | |
| 58 | elapsed = new_value.it_value.tv_sec; |
| 59 | if (abs(elapsed - 3600) > 60) { |
| 60 | ksft_test_result_fail("clockid: %d elapsed: %lld\n", |
| 61 | clockid, elapsed); |
| 62 | return 1; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | ksft_test_result_pass("clockid=%d\n", clockid); |
| 67 | |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | int main(int argc, char *argv[]) |
| 72 | { |
| 73 | int ret, status, len, fd; |
| 74 | char buf[4096]; |
| 75 | pid_t pid; |
| 76 | struct timespec btime_now, mtime_now; |
| 77 | |
| 78 | nscheck(); |
| 79 | |
| 80 | check_supported_timers(); |
| 81 | |
| 82 | ksft_set_plan(3); |
| 83 | |
| 84 | clock_gettime(CLOCK_MONOTONIC, &mtime_now); |
| 85 | clock_gettime(CLOCK_BOOTTIME, &btime_now); |
| 86 | |
| 87 | if (unshare_timens()) |
| 88 | return 1; |
| 89 | |
| 90 | len = snprintf(buf, sizeof(buf), "%d %d 0\n%d %d 0", |
| 91 | CLOCK_MONOTONIC, 70 * 24 * 3600, |
| 92 | CLOCK_BOOTTIME, 9 * 24 * 3600); |
| 93 | fd = open("/proc/self/timens_offsets", O_WRONLY); |
| 94 | if (fd < 0) |
| 95 | return pr_perror("/proc/self/timens_offsets"); |
| 96 | |
| 97 | if (write(fd, buf, len) != len) |
| 98 | return pr_perror("/proc/self/timens_offsets"); |
| 99 | |
| 100 | close(fd); |
| 101 | mtime_now.tv_sec += 70 * 24 * 3600; |
| 102 | btime_now.tv_sec += 9 * 24 * 3600; |
| 103 | |
| 104 | pid = fork(); |
| 105 | if (pid < 0) |
| 106 | return pr_perror("Unable to fork"); |
| 107 | if (pid == 0) { |
| 108 | ret = 0; |
| 109 | ret |= run_test(CLOCK_BOOTTIME, btime_now); |
| 110 | ret |= run_test(CLOCK_MONOTONIC, mtime_now); |
| 111 | ret |= run_test(CLOCK_BOOTTIME_ALARM, btime_now); |
| 112 | |
| 113 | if (ret) |
| 114 | ksft_exit_fail(); |
| 115 | ksft_exit_pass(); |
| 116 | return ret; |
| 117 | } |
| 118 | |
| 119 | if (waitpid(pid, &status, 0) != pid) |
| 120 | return pr_perror("Unable to wait the child process"); |
| 121 | |
| 122 | if (WIFEXITED(status)) |
| 123 | return WEXITSTATUS(status); |
| 124 | |
| 125 | return 1; |
| 126 | } |