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/* code-from-errno.c - Mapping errnos to error codes.
   Copyright (C) 2003 g10 Code GmbH

   This file is part of libgpg-error.

   libgpg-error 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.
 
   libgpg-error 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 libgpg-error; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.  */

#if HAVE_CONFIG_H
#include <config.h>
#endif

#include <gpg-error.h>

#include "code-from-errno.h"

/* Retrieve the error code for the system error ERR.  This returns
   GPG_ERR_UNKNOWN_ERRNO if the system error is not mapped (report
   this).  */
gpg_err_code_t
gpg_err_code_from_errno (int err)
{
  int idx = errno_to_idx (err);

  if (!err)
    return GPG_ERR_NO_ERROR;

  if (idx < 0)
    return GPG_ERR_UNKNOWN_ERRNO;

  return GPG_ERR_SYSTEM_ERROR | err_code_from_index[idx];
}