1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <sched.h>
#include <sys/timerfd.h>
#include <sys/syscall.h>
#include <time.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <pthread.h>
#include <signal.h>
#include <string.h>
#include "log.h"
#include "timens.h"
void test_sig(int sig)
{
if (sig == SIGUSR2)
pthread_exit(NULL);
}
struct thread_args {
struct timespec *now, *rem;
pthread_mutex_t *lock;
int clockid;
int abs;
};
void *call_nanosleep(void *_args)
{
struct thread_args *args = _args;
clock_nanosleep(args->clockid, args->abs ? TIMER_ABSTIME : 0, args->now, args->rem);
pthread_mutex_unlock(args->lock);
return NULL;
}
int run_test(int clockid, int abs)
{
struct timespec now = {}, rem;
struct thread_args args = { .now = &now, .rem = &rem, .clockid = clockid};
struct timespec start;
pthread_mutex_t lock;
pthread_t thread;
int j, ok, ret;
signal(SIGUSR1, test_sig);
signal(SIGUSR2, test_sig);
pthread_mutex_init(&lock, NULL);
pthread_mutex_lock(&lock);
if (clock_gettime(clockid, &start) == -1) {
if (errno == EINVAL && check_skip(clockid))
return 0;
return pr_perror("clock_gettime");
}
if (abs) {
now.tv_sec = start.tv_sec;
now.tv_nsec = start.tv_nsec;
}
now.tv_sec += 3600;
args.abs = abs;
args.lock = &lock;
ret = pthread_create(&thread, NULL, call_nanosleep, &args);
if (ret != 0) {
pr_err("Unable to create a thread: %s", strerror(ret));
return 1;
}
/* Wait when the thread will call clock_nanosleep(). */
ok = 0;
for (j = 0; j < 8; j++) {
/* The maximum timeout is about 5 seconds. */
usleep(10000 << j);
/* Try to interrupt clock_nanosleep(). */
pthread_kill(thread, SIGUSR1);
usleep(10000 << j);
/* Check whether clock_nanosleep() has been interrupted or not. */
if (pthread_mutex_trylock(&lock) == 0) {
/**/
ok = 1;
break;
}
}
if (!ok)
pthread_kill(thread, SIGUSR2);
pthread_join(thread, NULL);
pthread_mutex_destroy(&lock);
if (!ok) {
ksft_test_result_pass("clockid: %d abs:%d timeout\n", clockid, abs);
return 1;
}
if (rem.tv_sec < 3300 || rem.tv_sec > 3900) {
pr_fail("clockid: %d abs: %d remain: %ld\n",
clockid, abs, rem.tv_sec);
return 1;
}
ksft_test_result_pass("clockid: %d abs:%d\n", clockid, abs);
return 0;
}
int main(int argc, char *argv[])
{
int ret, nsfd;
nscheck();
ksft_set_plan(4);
check_supported_timers();
if (unshare_timens())
return 1;
if (_settime(CLOCK_MONOTONIC, 7 * 24 * 3600))
return 1;
if (_settime(CLOCK_BOOTTIME, 9 * 24 * 3600))
return 1;
nsfd = open("/proc/self/ns/time_for_children", O_RDONLY);
if (nsfd < 0)
return pr_perror("Unable to open timens_for_children");
if (setns(nsfd, CLONE_NEWTIME))
return pr_perror("Unable to set timens");
ret = 0;
ret |= run_test(CLOCK_MONOTONIC, 0);
ret |= run_test(CLOCK_MONOTONIC, 1);
ret |= run_test(CLOCK_BOOTTIME_ALARM, 0);
ret |= run_test(CLOCK_BOOTTIME_ALARM, 1);
if (ret)
ksft_exit_fail();
ksft_exit_pass();
return ret;
}
|
