time/tst-clock_settime.c

   1 /* Test for clock_settime
   2    Copyright (C) 2021 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>