1 /* Test for settimeofday 2 Copyright (C) 2021-2022 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/time.h> 22 #include <support/check.h> 23 #include <support/xtime.h> 24 25 #define TIMESPEC_SEC_Y2038_OV 0x7FFFFFFF 26 #define FUTURE_TIME (TIMESPEC_SEC_Y2038_OV - 10) 27 28 static int do_test(void)29do_test (void) 30 { 31 const struct timeval tv = { FUTURE_TIME, 0}; 32 struct timespec tv_future, tv_now; 33 34 /* Check if altering target time is allowed. */ 35 if (getenv (SETTIME_ENV_NAME) == NULL) 36 FAIL_UNSUPPORTED ("settimeofday is executed only when "\ 37 SETTIME_ENV_NAME" is set\n"); 38 39 tv_now = xclock_now (CLOCK_REALTIME); 40 int ret = settimeofday (&tv, NULL); 41 if (ret == -1) 42 FAIL_EXIT1 ("settimeofday failed: %m\n"); 43 44 tv_future = xclock_now (CLOCK_REALTIME); 45 46 /* Restore old time value on target machine. */ 47 xclock_settime (CLOCK_REALTIME, (const struct timespec*) &tv_now); 48 49 if (tv_future.tv_sec < tv.tv_sec) 50 FAIL_EXIT1 ("settimeofday set wrong time!\n"); 51 52 return 0; 53 } 54 55 #include <support/test-driver.c> 56