1
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
18int 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
71int 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}
127
