/* Copyright (C) 1993-2018 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 <errno.h>

#include <libintl.h>

#include <stdio.h>

#include <string.h>

#include <mach/error.h>

#include <errorlib.h>

#include <sys/param.h>

#include <_itoa.h>

/* It is critical here that we always use the `dcgettext' function for

   the message translation.  Since <libintl.h> only defines the macro

   `dgettext' to use `dcgettext' for optimizing programs this is not

   always guaranteed.  */

#ifndef dgettext

# include <locale.h>		/* We need LC_MESSAGES.  */

# define dgettext(domainname, msgid) dcgettext (domainname, msgid, LC_MESSAGES)

#endif

/* Fill buf with a string describing the errno code in ERRNUM.  */

int

__xpg_strerror_r (int errnum, char *buf, size_t buflen)

{

  int system;

  int sub;

  int code;

  const struct error_system *es;

  extern void __mach_error_map_compat (int *);

  const char *estr;

  __mach_error_map_compat (&errnum);

  system = err_get_system (errnum);

  sub = err_get_sub (errnum);

  code = err_get_code (errnum);

  if (system > err_max_system || ! __mach_error_systems[system].bad_sub)

    return EINVAL;

  es = &__mach_error_systems[system];

  if (sub >= es->max_sub)

    estr = (const char *) es->bad_sub;

  else if (code >= es->subsystem[sub].max_code)

    return EINVAL;

  else

    estr = (const char *) _(es->subsystem[sub].codes[code]);

  size_t estrlen = strlen (estr) + 1;

  if (buflen < estrlen)

    return ERANGE;

  memcpy (buf, estr, estrlen);

  return 0;

}