~ubuntu-branches/ubuntu/precise/eglibc/precise-201308281639

/* Selective file content synch'ing.

   Copyright (C) 2006, 2007, 2011 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 <sysdep-cancel.h>

#include <sys/syscall.h>

#ifdef __NR_sync_file_range

int

sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)

{

  if (SINGLE_THREAD_P)

    return INLINE_SYSCALL (sync_file_range, 7, fd, 0,

			   __LONG_LONG_PAIR ((long) (from >> 32), (long) from),

			   __LONG_LONG_PAIR ((long) (to >> 32), (long) to),

			   flags);

  int result;

  int oldtype = LIBC_CANCEL_ASYNC ();

  result = INLINE_SYSCALL (sync_file_range, 7, fd, 0,

			   __LONG_LONG_PAIR ((long) (from >> 32), (long) from),

			   __LONG_LONG_PAIR ((long) (to >> 32), (long) to),

			   flags);

  LIBC_CANCEL_RESET (oldtype);

  return result;

}

#else

int

sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)

{

  __set_errno (ENOSYS);

  return -1;

}

stub_warning (sync_file_range)

# include <stub-tag.h>

#endif