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72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* Copyright (C) 2007-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <libintl.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/param.h>
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static __thread char *last_value;
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static const char *
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translate (const char *str, locale_t loc)
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{
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locale_t oldloc = __uselocale (loc);
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const char *res = _(str);
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__uselocale (oldloc);
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return res;
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}
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/* Return a string describing the errno code in ERRNUM. */
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char *
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strerror_l (int errnum, locale_t loc)
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{
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if (__builtin_expect (errnum < 0 || errnum >= _sys_nerr_internal
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|| _sys_errlist_internal[errnum] == NULL, 0))
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{
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free (last_value);
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if (__asprintf (&last_value, "%s%d",
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translate ("Unknown error ", loc), errnum) == -1)
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last_value = NULL;
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return last_value;
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}
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return (char *) translate (_sys_errlist_internal[errnum], loc);
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}
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#ifdef _LIBC
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# ifdef _LIBC_REENTRANT
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/* This is called when a thread is exiting to free the last_value string. */
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static void __attribute__ ((section ("__libc_thread_freeres_fn")))
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strerror_thread_freeres (void)
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{
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free (last_value);
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}
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text_set_element (__libc_thread_subfreeres, strerror_thread_freeres);
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text_set_element (__libc_subfreeres, strerror_thread_freeres);
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# endif
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#endif
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