1 | /* Test for ntp_gettime. |
2 | Copyright (C) 2021-2024 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <time.h> |
20 | #include <stdlib.h> |
21 | #include <sys/timex.h> |
22 | #include <support/check.h> |
23 | #include <support/xtime.h> |
24 | |
25 | #ifndef NTP_GETTIME_SYSCALL |
26 | # define NTP_GETTIME_SYSCALL ntp_gettime |
27 | #endif |
28 | |
29 | #define STR(__s) #__s |
30 | |
31 | static int |
32 | do_test (void) |
33 | { |
34 | struct timespec tv_before_ntp, tv_after_ntp; |
35 | struct ntptimeval ntv; |
36 | |
37 | /* To prevent seconds rollover (which is very unlikely though), |
38 | loop until we do match seconds values before and after |
39 | call to ntp_gettime. */ |
40 | do |
41 | { |
42 | tv_before_ntp = xclock_now (CLOCK_REALTIME); |
43 | |
44 | int ret = NTP_GETTIME_SYSCALL (ntv: &ntv); |
45 | if (ret == -1) |
46 | FAIL_EXIT1 (STR(NTP_GETTIME_SYSCALL)" failed: %m\n" ); |
47 | |
48 | tv_after_ntp = xclock_now (CLOCK_REALTIME); |
49 | } |
50 | while (tv_after_ntp.tv_sec != tv_before_ntp.tv_sec); |
51 | |
52 | TEST_COMPARE (tv_after_ntp.tv_sec, ntv.time.tv_sec); |
53 | return 0; |
54 | } |
55 | |
56 | #include <support/test-driver.c> |
57 | |