/**************************************************************************/
/*                                                                        */
/*                                 OCaml                                  */
/*                                                                        */
/*             Xavier Leroy, projet Cristal, INRIA Rocquencourt           */
/*                                                                        */
/*   Copyright 1996 Institut National de Recherche en Informatique et     */
/*     en Automatique.                                                    */
/*                                                                        */
/*   All rights reserved.  This file is distributed under the terms of    */
/*   the GNU Lesser General Public License version 2.1, with the          */
/*   special exception on linking described in the file LICENSE.          */
/*                                                                        */
/**************************************************************************/

#define CAML_INTERNALS

#include <sys/types.h>
#include <caml/fail.h>
#include <caml/mlvalues.h>
#include <caml/io.h>
#include <caml/signals.h>
#include "caml/unixsupport.h"
#ifndef _WIN32
#include <unistd.h>
#endif

#ifdef HAS_TRUNCATE

CAMLprim value caml_unix_ftruncate(value fd, value len)
{
  int result;
  caml_enter_blocking_section();
  result = ftruncate(Int_val(fd), Long_val(len));
  caml_leave_blocking_section();
  if (result == -1) caml_uerror("ftruncate", Nothing);
  return Val_unit;
}

CAMLprim value caml_unix_ftruncate_64(value fd, value len)
{
  int result;
  file_offset ofs = File_offset_val(len);
  caml_enter_blocking_section();
  result = ftruncate(Int_val(fd), ofs);
  caml_leave_blocking_section();
  if (result == -1) caml_uerror("ftruncate", Nothing);
  return Val_unit;
}

#else

CAMLprim value caml_unix_ftruncate(value fd, value len)
{ caml_invalid_argument("ftruncate not implemented"); }

CAMLprim value caml_unix_ftruncate_64(value fd, value len)
{ caml_invalid_argument("ftruncate not implemented"); }

#endif