/**************************************************************************/
/*                                                                        */
/*                                 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.          */
/*                                                                        */
/**************************************************************************/

#include <caml/mlvalues.h>
#include <caml/alloc.h>
#include <caml/fail.h>
#ifndef _WIN32
#include <sys/param.h>
#endif
#include "caml/unixsupport.h"

#ifdef HAS_GETHOSTNAME

#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 256
#endif

CAMLprim value caml_unix_gethostname(value unit)
{
  char name[MAXHOSTNAMELEN];
  gethostname(name, MAXHOSTNAMELEN);
  name[MAXHOSTNAMELEN-1] = 0;
  return caml_copy_string(name);
}

#else
#ifdef HAS_UNAME

#include <sys/utsname.h>

CAMLprim value caml_unix_gethostname(value unit)
{
  struct utsname un;
  uname(&un);
  return copy_string(un.nodename);
}

#else

CAMLprim value caml_unix_gethostname(value unit)
{ caml_invalid_argument("gethostname not implemented"); }

#endif
#endif