io/sys/sendfile.h

   1 /* sendfile -- copy data directly from one file descriptor to another
   2    Copyright (C) 1998,99,01,2002 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _SYS_SENDFILE_H
  21 #define _SYS_SENDFILE_H 1
  22
  23 #include <features.h>
  24 #include <sys/types.h>
  25
  26 __BEGIN_DECLS
  27
  28 /* Send COUNT bytes from file associated with IN_FD starting at OFFSET to
  29    descriptor OUT_FD.  */
  30 #ifndef __USE_FILE_OFFSET64
  31 extern ssize_t sendfile (int __out_fd, int __in_fd, off_t *__offset,
  32                          size_t __count) __THROW;
  33 #else
  34 # ifdef __REDIRECT
  35 extern ssize_t __REDIRECT (sendfile,
  36                            (int __out_fd, int __in_fd, __off64_t *__offset,
  37                             size_t __count) __THROW,
  38                            sendfile64);
  39 # else
  40 #  define sendfile sendfile64
  41 # endif
  42 #endif
  43 #ifdef __USE_LARGEFILE64
  44 extern ssize_t sendfile64 (int __out_fd, int __in_fd, __off64_t *__offset,
  45                            size_t __count) __THROW;
  46 #endif
  47
  48 __END_DECLS
  49
  50 #endif  /* sys/sendfile.h */