1 | /* Copyright (C) 2007-2020 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 <libintl.h> |
19 | #include <locale.h> |
20 | #include <stdio.h> |
21 | #include <stdlib.h> |
22 | #include <string.h> |
23 | #include <sys/param.h> |
24 | #include <libc-symbols.h> |
25 | |
26 | static __thread char *last_value; |
27 | |
28 | |
29 | static const char * |
30 | translate (const char *str, locale_t loc) |
31 | { |
32 | locale_t oldloc = __uselocale (loc); |
33 | const char *res = _(str); |
34 | __uselocale (oldloc); |
35 | return res; |
36 | } |
37 | |
38 | |
39 | /* Return a string describing the errno code in ERRNUM. */ |
40 | char * |
41 | strerror_l (int errnum, locale_t loc) |
42 | { |
43 | |
44 | |
45 | if (__builtin_expect (errnum < 0 || errnum >= _sys_nerr_internal |
46 | || _sys_errlist_internal[errnum] == NULL, 0)) |
47 | { |
48 | free (last_value); |
49 | if (__asprintf (&last_value, "%s%d" , |
50 | translate ("Unknown error " , loc), errnum) == -1) |
51 | last_value = NULL; |
52 | |
53 | return last_value; |
54 | } |
55 | |
56 | return (char *) translate (_sys_errlist_internal[errnum], loc); |
57 | } |
58 | |
59 | void |
60 | __strerror_thread_freeres (void) |
61 | { |
62 | free (last_value); |
63 | } |
64 | text_set_element (__libc_subfreeres, __strerror_thread_freeres); |
65 | |