uio.h 1.9 KB

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  1. /* Copyright (C) 1991, 1992, 1996, 1997, 1998 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 Library General Public License as
  5. published by the Free Software Foundation; either version 2 of the
  6. 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. Library General Public License for more details.
  11. You should have received a copy of the GNU Library General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If not,
  13. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14. Boston, MA 02111-1307, USA. */
  15. #ifndef _SYS_UIO_H
  16. #define _SYS_UIO_H 1
  17. #include <features.h>
  18. #include <sys/types.h>
  19. __BEGIN_DECLS
  20. /* This file defines `struct iovec'. */
  21. #include <bits/uio.h>
  22. /* Read data from file descriptor FD, and put the result in the
  23. buffers described by VECTOR, which is a vector of COUNT `struct iovec's.
  24. The buffers are filled in the order specified.
  25. Operates just like `read' (see <unistd.h>) except that data are
  26. put in VECTOR instead of a contiguous buffer. */
  27. extern ssize_t readv __P ((int __fd, __const struct iovec *__vector,
  28. int __count));
  29. /* Write data pointed by the buffers described by VECTOR, which
  30. is a vector of COUNT `struct iovec's, to file descriptor FD.
  31. The data is written in the order specified.
  32. Operates just like `write' (see <unistd.h>) except that the data
  33. are taken from VECTOR instead of a contiguous buffer. */
  34. extern ssize_t writev __P ((int __fd, __const struct iovec *__vector,
  35. int __count));
  36. __END_DECLS
  37. #endif /* sys/uio.h */