uclibc-ng/libc/sysdeps/linux/mips/readahead.c

/* Provide kernel hint to read ahead.
   Copyright (C) 2002, 2003, 2004 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/syscall.h>

#ifdef __UCLIBC_HAS_LFS__
#include <_lfs_64.h>
# ifdef __NR_readahead

ssize_t readahead(int fd, off64_t offset, size_t count)
{
#  if _MIPS_SIM == _ABIO32
	return INLINE_SYSCALL (readahead, 5, fd, 0,
		__LONG_LONG_PAIR ((off_t) (offset >> 32), (off_t) offset),
		count);
#  else /* N32 || N64 */
	return INLINE_SYSCALL (readahead, 3, fd, offset, count);
#  endif
}

# endif
#endif