mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-13 00:30:07 +00:00
1d44530a5b
For strerror, this fixes commit 28aff04781 ("string:
Implement strerror in terms of strerror_l"). This commit avoids
returning NULL for strerror_l as well, although POSIX allows this
behavior for strerror_l.
Reviewed-by: Arjun Shankar <arjun@redhat.com>
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* Copyright (C) 2007-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <libintl.h>
|
|
#include <locale.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <tls-internal.h>
|
|
|
|
|
|
static const char *
|
|
translate (const char *str, locale_t loc)
|
|
{
|
|
locale_t oldloc = __uselocale (loc);
|
|
const char *res = _(str);
|
|
__uselocale (oldloc);
|
|
return res;
|
|
}
|
|
|
|
|
|
/* Return a string describing the errno code in ERRNUM. */
|
|
char *
|
|
__strerror_l (int errnum, locale_t loc)
|
|
{
|
|
int saved_errno = errno;
|
|
char *err = (char *) __get_errlist (errnum);
|
|
if (__glibc_unlikely (err == NULL))
|
|
{
|
|
struct tls_internal_t *tls_internal = __glibc_tls_internal ();
|
|
free (tls_internal->strerror_l_buf);
|
|
if (__asprintf (&tls_internal->strerror_l_buf, "%s%d",
|
|
translate ("Unknown error ", loc), errnum) > 0)
|
|
err = tls_internal->strerror_l_buf;
|
|
else
|
|
{
|
|
/* The memory was freed above. */
|
|
tls_internal->strerror_l_buf = NULL;
|
|
/* Provide a fallback translation. */
|
|
err = (char *) translate ("Unknown error", loc);
|
|
}
|
|
}
|
|
else
|
|
err = (char *) translate (err, loc);
|
|
|
|
__set_errno (saved_errno);
|
|
return err;
|
|
}
|
|
weak_alias (__strerror_l, strerror_l)
|
|
libc_hidden_def (__strerror_l)
|