/*

Copyright (C) 2016-2018 John W. Eaton

This file is part of Octave.

Octave is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Octave 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING.  If not, see
<https://www.gnu.org/licenses/>.

*/

// uname may be provided by gnulib.  We don't include gnulib headers
// directly in Octave's C++ source files to avoid problems that may be
// caused by the way that gnulib overrides standard library functions.

#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif

#include <sys/utsname.h>

#include "uname-wrapper.h"

// Returns pointers to static storage.

int
octave_uname_wrapper (char **sysname, char **nodename,
                      char **release, char **version, char **machine)
{
  static struct utsname unm;

  int err = uname (&unm);

  if (err < 0)
    {
      *sysname = 0;
      *nodename = 0;
      *release = 0;
      *version = 0;
      *machine = 0;
    }
  else
    {
      *sysname = unm.sysname;
      *nodename = unm.nodename;
      *release = unm.release;
      *version = unm.version;
      *machine = unm.machine;
    }

  return err;
}
