/* Copyright (C) 2009-2018 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/>.  */

#include <sys/uio.h>

#include <sysdep-cancel.h>

#ifndef __OFF_T_MATCHES_OFF64_T

# ifdef __ASSUME_PREADV

#  ifndef __NR_preadv

#   define __NR_preadv __NR_preadv64

#  endif

ssize_t

preadv (int fd, const struct iovec *vector, int count, off_t offset)

{

  return SYSCALL_CANCEL (preadv, fd, vector, count, LO_HI_LONG (offset));

}

# else

static ssize_t __atomic_preadv_replacement (int, const struct iovec *,

					    int, off_t);

ssize_t

preadv (int fd, const struct iovec *vector, int count, off_t offset)

{

#  ifdef __NR_preadv

  ssize_t result = SYSCALL_CANCEL (preadv, fd, vector, count,

				   LO_HI_LONG (offset));

  if (result >= 0 || errno != ENOSYS)

    return result;

#  endif

  return __atomic_preadv_replacement (fd, vector, count, offset);

}

#  define PREADV static __atomic_preadv_replacement

#  define PREAD __pread

#  define OFF_T off_t

#  include <sysdeps/posix/preadv_common.c>

# endif /* __ASSUME_PREADV  */

libc_hidden_def (preadv)

#endif