ppoll.c 1.6 KB

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  1. /* Copyright (C) 2006 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #include <sys/syscall.h>
  16. #if defined __NR_ppoll && defined __UCLIBC_LINUX_SPECIFIC__ && defined __USE_GNU
  17. #define __need_NULL
  18. #include <stddef.h>
  19. #include <signal.h>
  20. #include <sys/poll.h>
  21. #include <cancel.h>
  22. static int
  23. __NC(ppoll)(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
  24. const sigset_t *sigmask)
  25. {
  26. /* The Linux kernel can in some situations update the timeout value.
  27. We do not want that so use a local variable. */
  28. struct timespec tval;
  29. if (timeout != NULL) {
  30. tval = *timeout;
  31. timeout = &tval;
  32. }
  33. return INLINE_SYSCALL(ppoll, 5, fds, nfds, timeout, sigmask, __SYSCALL_SIGSET_T_SIZE);
  34. }
  35. CANCELLABLE_SYSCALL(int, ppoll, (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
  36. const sigset_t *sigmask),
  37. (fds, nfds, timeout, sigmask))
  38. #endif