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