| 1 | |
| 2 | #define _GNU_SOURCE
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| 3 | #include <sched.h>
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| 4 |
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| 5 | #include <sys/syscall.h>
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| 6 | #include <sys/types.h>
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| 7 | #include <sys/wait.h>
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| 8 | #include <time.h>
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| 9 | #include <unistd.h>
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| 10 | #include <stdlib.h>
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| 11 | #include <stdio.h>
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| 12 | #include <stdint.h>
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| 13 | #include <signal.h>
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| 14 |
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| 15 | #include "log.h"
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| 16 | #include "timens.h"
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| 17 |
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| 18 | static int run_test(int clockid, struct timespec now)
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| 19 | {
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| 20 | struct itimerspec new_value;
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| 21 | long long elapsed;
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| 22 | timer_t fd;
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| 23 | int i;
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| 24 |
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| 25 | if (check_skip(clockid))
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| 26 | return 0;
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| 27 |
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| 28 | for (i = 0; i < 2; i++) {
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| 29 | struct sigevent sevp = {.sigev_notify = SIGEV_NONE};
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| 30 | int flags = 0;
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| 31 |
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| 32 | new_value.it_value.tv_sec = 3600;
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| 33 | new_value.it_value.tv_nsec = 0;
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| 34 | new_value.it_interval.tv_sec = 1;
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| 35 | new_value.it_interval.tv_nsec = 0;
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| 36 |
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| 37 | if (i == 1) {
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| 38 | new_value.it_value.tv_sec += now.tv_sec;
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| 39 | new_value.it_value.tv_nsec += now.tv_nsec;
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| 40 | }
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| 41 |
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| 42 | if (timer_create(clockid, &sevp, &fd) == -1) {
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| 43 | if (errno == ENOSYS) {
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| 44 | ksft_test_result_skip("Posix Clocks & timers are supported\n");
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| 45 | return 0;
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| 46 | }
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| 47 | return pr_perror("timerfd_create");
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| 48 | }
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| 49 |
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| 50 | if (i == 1)
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| 51 | flags |= TIMER_ABSTIME;
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| 52 | if (timer_settime(fd, flags, &new_value, NULL) == -1)
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| 53 | return pr_perror("timerfd_settime");
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| 54 |
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| 55 | if (timer_gettime(fd, &new_value) == -1)
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| 56 | return pr_perror("timerfd_gettime");
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| 57 |
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| 58 | elapsed = new_value.it_value.tv_sec;
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| 59 | if (llabs(elapsed - 3600) > 60) {
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| 60 | ksft_test_result_fail("clockid: %d elapsed: %lld\n",
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| 61 | clockid, elapsed);
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| 62 | return 1;
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| 63 | }
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| 64 | }
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| 65 |
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| 66 | ksft_test_result_pass("clockid=%d\n", clockid);
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| 67 |
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| 68 | return 0;
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| 69 | }
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| 70 |
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| 71 | int main(int argc, char *argv[])
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| 72 | {
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| 73 | int ret, status, len, fd;
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| 74 | char buf[4096];
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| 75 | pid_t pid;
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| 76 | struct timespec btime_now, mtime_now;
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| 77 |
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| 78 | ksft_print_header();
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| 79 |
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| 80 | nscheck();
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| 81 |
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| 82 | check_supported_timers();
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| 83 |
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| 84 | ksft_set_plan(3);
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| 85 |
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| 86 | clock_gettime(CLOCK_MONOTONIC, &mtime_now);
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| 87 | clock_gettime(CLOCK_BOOTTIME, &btime_now);
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| 88 |
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| 89 | if (unshare_timens())
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| 90 | return 1;
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| 91 |
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| 92 | len = snprintf(buf, sizeof(buf), "%d %d 0\n%d %d 0",
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| 93 | CLOCK_MONOTONIC, 70 * 24 * 3600,
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| 94 | CLOCK_BOOTTIME, 9 * 24 * 3600);
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| 95 | fd = open("/proc/self/timens_offsets", O_WRONLY);
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| 96 | if (fd < 0)
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| 97 | return pr_perror("/proc/self/timens_offsets");
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| 98 |
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| 99 | if (write(fd, buf, len) != len)
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| 100 | return pr_perror("/proc/self/timens_offsets");
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| 101 |
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| 102 | close(fd);
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| 103 | mtime_now.tv_sec += 70 * 24 * 3600;
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| 104 | btime_now.tv_sec += 9 * 24 * 3600;
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| 105 |
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| 106 | pid = fork();
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| 107 | if (pid < 0)
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| 108 | return pr_perror("Unable to fork");
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| 109 | if (pid == 0) {
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| 110 | ret = 0;
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| 111 | ret |= run_test(CLOCK_BOOTTIME, btime_now);
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| 112 | ret |= run_test(CLOCK_MONOTONIC, mtime_now);
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| 113 | ret |= run_test(CLOCK_BOOTTIME_ALARM, btime_now);
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| 114 |
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| 115 | if (ret)
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| 116 | ksft_exit_fail();
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| 117 | ksft_exit_pass();
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| 118 | return ret;
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| 119 | }
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| 120 |
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| 121 | if (waitpid(pid, &status, 0) != pid)
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| 122 | return pr_perror("Unable to wait the child process");
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| 123 |
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| 124 | if (WIFEXITED(status))
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| 125 | return WEXITSTATUS(status);
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| 126 |
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| 127 | return 1;
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| 128 | }
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