Line data    Source code

       1             : /* code-from-errno.c - Mapping errnos to error codes.
       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 <errno.h>
      26             : 
      27             : #include <gpg-error.h>
      28             : 
      29             : #include "code-from-errno.h"
      30             : 
      31             : /* Retrieve the error code for the system error ERR.  This returns
      32             :    GPG_ERR_UNKNOWN_ERRNO if the system error is not mapped (report
      33             :    this).  */
      34             : gpg_err_code_t
      35           2 : _gpg_err_code_from_errno (int err)
      36             : {
      37             :   int idx;
      38             : 
      39           2 :   if (!err)
      40             :     return GPG_ERR_NO_ERROR;
      41             : 
      42           1 :   idx = errno_to_idx (err);
      43             : 
      44           1 :   if (idx < 0)
      45             :     return GPG_ERR_UNKNOWN_ERRNO;
      46             : 
      47           1 :   return GPG_ERR_SYSTEM_ERROR | err_code_from_index[idx];
      48             : }
      49             : 
      50             : 
      51             : /* Retrieve the error code directly from the ERRNO variable.  This
      52             :    returns GPG_ERR_UNKNOWN_ERRNO if the system error is not mapped
      53             :    (report this) and GPG_ERR_MISSING_ERRNO if ERRNO has the value 0. */
      54             : gpg_err_code_t
      55           2 : _gpg_err_code_from_syserror (void)
      56             : {
      57           2 :   int err = errno;
      58             :   int idx;
      59             : 
      60           2 :   if (!err)
      61             :     return GPG_ERR_MISSING_ERRNO;
      62             : 
      63           1 :   idx = errno_to_idx (err);
      64             : 
      65           1 :   if (idx < 0)
      66             :     return GPG_ERR_UNKNOWN_ERRNO;
      67             : 
      68           1 :   return GPG_ERR_SYSTEM_ERROR | err_code_from_index[idx];
      69             : }