stime.c 1.1 KB

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  1. /* Copyright (C) 1992-2019 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <errno.h>
  15. #include <stddef.h> /* For NULL. */
  16. #include <sys/time.h>
  17. #include <time.h>
  18. /* Set the system clock to *WHEN. */
  19. int
  20. stime (const time_t *when)
  21. {
  22. struct timeval tv;
  23. if (when == NULL)
  24. {
  25. __set_errno (EINVAL);
  26. return -1;
  27. }
  28. tv.tv_sec = *when;
  29. tv.tv_usec = 0;
  30. return __settimeofday (&tv, (struct timezone *) 0);
  31. }