1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <stdio.h> |
19 | #include <errno.h> |
20 | #include <libintl.h> |
21 | #include <array_length.h> |
22 | |
23 | #ifndef ERR_MAP |
24 | # define ERR_MAP(n) n |
25 | #endif |
26 | |
27 | const char *const _sys_errlist_internal[] = |
28 | { |
29 | #define _S(n, str) [ERR_MAP(n)] = str, |
30 | #include <errlist.h> |
31 | #undef _S |
32 | }; |
33 | |
34 | const char * |
35 | __get_errlist (int errnum) |
36 | { |
37 | int mapped = ERR_MAP (errnum); |
38 | if (mapped >= 0 && mapped < array_length (_sys_errlist_internal)) |
39 | return _sys_errlist_internal[mapped]; |
40 | return NULL; |
41 | } |
42 | |
43 | static const union sys_errname_t |
44 | { |
45 | struct |
46 | { |
47 | #define MSGSTRFIELD1(line) str##line |
48 | #define MSGSTRFIELD(line) MSGSTRFIELD1(line) |
49 | #define _S(n, str) char MSGSTRFIELD(__LINE__)[sizeof(#n)]; |
50 | #include <errlist.h> |
51 | #undef _S |
52 | }; |
53 | char str[0]; |
54 | } _sys_errname = { { |
55 | #define _S(n, s) #n, |
56 | #include <errlist.h> |
57 | #undef _S |
58 | } }; |
59 | |
60 | static const unsigned short _sys_errnameidx[] = |
61 | { |
62 | #define _S(n, s) \ |
63 | [ERR_MAP(n)] = offsetof(union sys_errname_t, MSGSTRFIELD(__LINE__)), |
64 | #include <errlist.h> |
65 | #undef _S |
66 | }; |
67 | |
68 | const char * |
69 | __get_errname (int errnum) |
70 | { |
71 | int mapped = ERR_MAP (errnum); |
72 | if (mapped < 0 || mapped >= array_length (_sys_errnameidx) |
73 | || (mapped > 0 && _sys_errnameidx[mapped] == 0)) |
74 | return NULL; |
75 | return _sys_errname.str + _sys_errnameidx[mapped]; |
76 | } |
77 | |
78 | #include <errlist-compat.c> |
79 | |