tcdrain.c 1.5 KB

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  1. /* Copyright (C) 1995, 1996, 1997, 2002 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 <termios.h>
  16. #include <sys/ioctl.h>
  17. #ifdef __UCLIBC_HAS_THREADS_NATIVE__
  18. #include <sysdep-cancel.h>
  19. #endif
  20. libc_hidden_proto(ioctl)
  21. extern __typeof(tcdrain) __libc_tcdrain;
  22. /* Wait for pending output to be written on FD. */
  23. int __libc_tcdrain (int fd)
  24. {
  25. #ifdef __UCLIBC_HAS_THREADS_NATIVE__
  26. if (SINGLE_THREAD_P)
  27. /* With an argument of 1, TCSBRK for output to be drain. */
  28. return INLINE_SYSCALL (ioctl, 3, fd, TCSBRK, 1);
  29. int oldtype = LIBC_CANCEL_ASYNC ();
  30. /* With an argument of 1, TCSBRK for output to be drain. */
  31. int result = INLINE_SYSCALL (ioctl, 3, fd, TCSBRK, 1);
  32. LIBC_CANCEL_RESET (oldtype);
  33. return result;
  34. #else
  35. return ioctl(fd, TCSBRK, 1);
  36. #endif
  37. }
  38. weak_alias(__libc_tcdrain,tcdrain)