1  /* Test for clock_settime
       2     Copyright (C) 2021-2023 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 <support/check.h>
      21  #include <support/xtime.h>
      22  
      23  #define TIMESPEC_SEC_Y2038_OV 0x7FFFFFFF
      24  #define FUTURE_TIME (TIMESPEC_SEC_Y2038_OV - 10)
      25  
      26  static int
      27  do_test (void)
      28  {
      29    const struct timespec tv = { FUTURE_TIME, 0};
      30    struct timespec tv_future, tv_now;
      31  
      32    tv_now = xclock_now(CLOCK_REALTIME);
      33    xclock_settime(CLOCK_REALTIME, &tv);
      34    tv_future = xclock_now(CLOCK_REALTIME);
      35  
      36    /* Restore old time value on target machine.  */
      37    xclock_settime(CLOCK_REALTIME, (const struct timespec*) &tv_now);
      38  
      39    if (tv_future.tv_sec < tv.tv_sec)
      40      FAIL_EXIT1 ("clock_settime set wrong time!\n");
      41  
      42    return 0;
      43  }
      44  
      45  #include <support/test-driver.c>