1/* code-to-errno.c - Mapping error codes to errnos. 2 Copyright (C) 2003 g10 Code GmbH 3 4 This file is part of libgpg-error. 5 6 libgpg-error is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public License 8 as published by the Free Software Foundation; either version 2.1 of 9 the License, or (at your option) any later version. 10 11 libgpg-error is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with libgpg-error; if not, write to the Free 18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 19 02111-1307, USA. */ 20 21#if HAVE_CONFIG_H 22#include <config.h> 23#endif 24 25#include <gpg-error.h> 26 27#include "code-to-errno.h" 28 29/* Retrieve the system error for the error code CODE. This returns 0 30 if CODE is not a system error code. */ 31int 32gpg_err_code_to_errno (gpg_err_code_t code) 33{ 34 if (!(code & GPG_ERR_SYSTEM_ERROR)) 35 return 0; 36 code &= ~GPG_ERR_SYSTEM_ERROR; 37 38 if (code < sizeof (err_code_to_errno) / sizeof (err_code_to_errno[0])) 39 return err_code_to_errno[code]; 40 else 41 return 0; 42} 43