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 : }
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