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efdb85183a
This follows1d44530a5b("string: strerror must not return NULL (bug 30555)"): « For strerror, this fixes commit28aff04781("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. »
107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
/* strerror_l - Get errno description string in given locale. Mach version.
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Copyright (C) 2007-2023 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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<https://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 <errno.h>
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#include <mach/error.h>
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#include <errorlib.h>
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#include <tls-internal.h>
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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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int saved_errno = errno;
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char *err;
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int system;
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int sub;
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int code;
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const struct error_system *es;
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extern void __mach_error_map_compat (int *);
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__mach_error_map_compat (&errnum);
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system = err_get_system (errnum);
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sub = err_get_sub (errnum);
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code = err_get_code (errnum);
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if (system > err_max_system || ! __mach_error_systems[system].bad_sub)
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{
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struct tls_internal_t *tls_internal = __glibc_tls_internal ();
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free (tls_internal->strerror_l_buf);
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if (__asprintf (&tls_internal->strerror_l_buf, "%s%X",
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translate ("Error in unknown error system: ", loc),
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errnum) > 0)
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err = tls_internal->strerror_l_buf;
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else
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{
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/* The memory was freed above. */
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tls_internal->strerror_l_buf = NULL;
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/* Provide a fallback translation. */
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err = (char *) translate ("Unknown error", loc);
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}
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__set_errno (saved_errno);
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return err;
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}
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es = &__mach_error_systems[system];
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if (sub >= es->max_sub)
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err = (char *) translate (es->bad_sub, loc);
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else if (code >= es->subsystem[sub].max_code)
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{
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struct tls_internal_t *tls_internal = __glibc_tls_internal ();
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free (tls_internal->strerror_l_buf);
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if (__asprintf (&tls_internal->strerror_l_buf, "%s%s %d",
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translate ("Unknown error ", loc),
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translate (es->subsystem[sub].subsys_name, loc),
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errnum) > 0)
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err = tls_internal->strerror_l_buf;
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else
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{
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/* The memory was freed above. */
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tls_internal->strerror_l_buf = NULL;
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/* Provide a fallback translation. */
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err = (char *) translate ("Unknown error", loc);
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}
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}
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else
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err = (char *) translate (es->subsystem[sub].codes[code], loc);
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__set_errno (saved_errno);
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return err;
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}
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weak_alias (__strerror_l, strerror_l)
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libc_hidden_def (__strerror_l)
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