/* sendfile -- copy data directly from one file descriptor to another

   Copyright (C) 1998-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _SYS_SENDFILE_H

#define _SYS_SENDFILE_H	1

#include <features.h>

#include <sys/types.h>

__BEGIN_DECLS

/* Send up to COUNT bytes from file associated with IN_FD starting at

   *OFFSET to descriptor OUT_FD.  Set *OFFSET to the IN_FD's file position

   following the read bytes.  If OFFSET is a null pointer, use the normal

   file position instead.  Return the number of written bytes, or -1 in

   case of error.  */

#ifndef __USE_FILE_OFFSET64

extern ssize_t sendfile (int __out_fd, int __in_fd, off_t *__offset,

			 size_t __count) __THROW;

#else

# ifdef __REDIRECT_NTH

extern ssize_t __REDIRECT_NTH (sendfile,

			       (int __out_fd, int __in_fd, __off64_t *__offset,

				size_t __count), sendfile64);

# else

#  define sendfile sendfile64

# endif

#endif

#ifdef __USE_LARGEFILE64

extern ssize_t sendfile64 (int __out_fd, int __in_fd, __off64_t *__offset,

			   size_t __count) __THROW;

#endif

__END_DECLS

#endif	/* sys/sendfile.h */