1 | /* Copyright (C) 1991-2020 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 | const char *const _sys_errlist_internal[] = |
24 | { |
25 | #define _S(n, str) [n] = str, |
26 | #include <errlist.h> |
27 | #undef _S |
28 | }; |
29 | |
30 | const char * |
31 | __get_errlist (int errnum) |
32 | { |
33 | if (errnum >= 0 && errnum < array_length (_sys_errlist_internal)) |
34 | return _sys_errlist_internal[errnum]; |
35 | return NULL; |
36 | } |
37 | |
38 | static const union sys_errname_t |
39 | { |
40 | struct |
41 | { |
42 | #define MSGSTRFIELD1(line) str##line |
43 | #define MSGSTRFIELD(line) MSGSTRFIELD1(line) |
44 | #define _S(n, str) char MSGSTRFIELD(__LINE__)[sizeof(str)]; |
45 | #include <errlist.h> |
46 | #undef _S |
47 | }; |
48 | char str[0]; |
49 | } _sys_errname = { { |
50 | #define _S(n, s) s, |
51 | #include <errlist.h> |
52 | #undef _S |
53 | } }; |
54 | |
55 | static const unsigned short _sys_errnameidx[] = |
56 | { |
57 | #define _S(n, s) [n] = offsetof(union sys_errname_t, MSGSTRFIELD(__LINE__)), |
58 | #include <errlist.h> |
59 | #undef _S |
60 | }; |
61 | |
62 | const char * |
63 | __get_errname (int errnum) |
64 | { |
65 | if (errnum < 0 || errnum >= array_length (_sys_errnameidx) |
66 | || (errnum > 0 && _sys_errnameidx[errnum] == 0)) |
67 | return NULL; |
68 | return _sys_errname.str + _sys_errnameidx[errnum]; |
69 | } |
70 | |
71 | #include <errlist-compat.c> |
72 | |