1/* Copyright (C) 2007-2023 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 <string.h>
22#include <tls-internal.h>
23
24
25static const char *
26translate (const char *str, locale_t loc)
27{
28 locale_t oldloc = __uselocale (loc);
29 const char *res = _(str);
30 __uselocale (oldloc);
31 return res;
32}
33
34
35/* Return a string describing the errno code in ERRNUM. */
36char *
37__strerror_l (int errnum, locale_t loc)
38{
39 int saved_errno = errno;
40 char *err = (char *) __get_errlist (errnum);
41 if (__glibc_unlikely (err == NULL))
42 {
43 struct tls_internal_t *tls_internal = __glibc_tls_internal ();
44 free (tls_internal->strerror_l_buf);
45 if (__asprintf (&tls_internal->strerror_l_buf, "%s%d",
46 translate ("Unknown error ", loc), errnum) > 0)
47 err = tls_internal->strerror_l_buf;
48 else
49 {
50 /* The memory was freed above. */
51 tls_internal->strerror_l_buf = NULL;
52 /* Provide a fallback translation. */
53 err = (char *) translate ("Unknown error", loc);
54 }
55 }
56 else
57 err = (char *) translate (err, loc);
58
59 __set_errno (saved_errno);
60 return err;
61}
62weak_alias (__strerror_l, strerror_l)
63libc_hidden_def (__strerror_l)
64