^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #define _GNU_SOURCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <stdbool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <sys/syscall.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "log.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "timens.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Test shouldn't be run for a day, so add 10 days to child
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * time and check parent's time to be in the same day.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define DAY_IN_SEC (60*60*24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define TEN_DAYS_IN_SEC (10*DAY_IN_SEC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct test_clock {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) clockid_t id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * off_id is -1 if a clock has own offset, or it contains an index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * which contains a right offset of this clock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) int off_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) time_t offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ct(clock, off_id) { clock, #clock, off_id }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static struct test_clock clocks[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) ct(CLOCK_BOOTTIME, -1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) ct(CLOCK_BOOTTIME_ALARM, 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) ct(CLOCK_MONOTONIC, -1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) ct(CLOCK_MONOTONIC_COARSE, 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) ct(CLOCK_MONOTONIC_RAW, 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #undef ct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static int child_ns, parent_ns = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static int switch_ns(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (setns(fd, CLONE_NEWTIME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) pr_perror("setns()");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static int init_namespaces(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) char path[] = "/proc/self/ns/time_for_children";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct stat st1, st2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (parent_ns == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) parent_ns = open(path, O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (parent_ns <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return pr_perror("Unable to open %s", path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (fstat(parent_ns, &st1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return pr_perror("Unable to stat the parent timens");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (unshare_timens())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) child_ns = open(path, O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (child_ns <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return pr_perror("Unable to open %s", path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (fstat(child_ns, &st2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return pr_perror("Unable to stat the timens");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (st1.st_ino == st2.st_ino)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return pr_perror("The same child_ns after CLONE_NEWTIME");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static int test_gettime(clockid_t clock_index, bool raw_syscall, time_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct timespec child_ts_new, parent_ts_old, cur_ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) char *entry = raw_syscall ? "syscall" : "vdso";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) double precision = 0.0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (check_skip(clocks[clock_index].id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) switch (clocks[clock_index].id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) case CLOCK_MONOTONIC_COARSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) case CLOCK_MONOTONIC_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) precision = -2.0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (switch_ns(parent_ns))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return pr_err("switch_ns(%d)", child_ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (_gettime(clocks[clock_index].id, &parent_ts_old, raw_syscall))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) child_ts_new.tv_nsec = parent_ts_old.tv_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) child_ts_new.tv_sec = parent_ts_old.tv_sec + offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (switch_ns(child_ns))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return pr_err("switch_ns(%d)", child_ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (_gettime(clocks[clock_index].id, &cur_ts, raw_syscall))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (difftime(cur_ts.tv_sec, child_ts_new.tv_sec) < precision) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) ksft_test_result_fail(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) "Child's %s (%s) time has not changed: %lu -> %lu [%lu]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) clocks[clock_index].name, entry, parent_ts_old.tv_sec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) child_ts_new.tv_sec, cur_ts.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (switch_ns(parent_ns))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return pr_err("switch_ns(%d)", parent_ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (_gettime(clocks[clock_index].id, &cur_ts, raw_syscall))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (difftime(cur_ts.tv_sec, parent_ts_old.tv_sec) > DAY_IN_SEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) ksft_test_result_fail(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) "Parent's %s (%s) time has changed: %lu -> %lu [%lu]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) clocks[clock_index].name, entry, parent_ts_old.tv_sec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) child_ts_new.tv_sec, cur_ts.tv_sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* Let's play nice and put it closer to original */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) clock_settime(clocks[clock_index].id, &cur_ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) ksft_test_result_pass("Passed for %s (%s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) clocks[clock_index].name, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) int main(int argc, char *argv[])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) time_t offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) nscheck();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) check_supported_timers();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) ksft_set_plan(ARRAY_SIZE(clocks) * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (init_namespaces())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /* Offsets have to be set before tasks enter the namespace. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) for (i = 0; i < ARRAY_SIZE(clocks); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (clocks[i].off_id != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) offset = TEN_DAYS_IN_SEC + i * 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) clocks[i].offset = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (_settime(clocks[i].id, offset))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) for (i = 0; i < ARRAY_SIZE(clocks); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (clocks[i].off_id != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) offset = clocks[clocks[i].off_id].offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) offset = clocks[i].offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) ret |= test_gettime(i, true, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) ret |= test_gettime(i, false, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ksft_exit_fail();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) ksft_exit_pass();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return !!ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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