/
githubmirror
/
glibc
Обзор
Документация
Войти
/
githubmirror
/
glibc
Код
Запросы
0
Пакеты
0
Релизы
0
Аналитика
Безопасность
master
stdio-common/errname.c
61 строка
2 KB
Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
Код
Авторство
О чём код?
/* Internal errno names mapping definition. Copyright (C) 2022-2026 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 <stdio.h> #include <errno.h> #include <libintl.h> #include <array_length.h> #ifndef ERR_MAP # define ERR_MAP(n) n #endif static const union sys_errname_t { struct { #define MSGSTRFIELD1(line) str##line #define MSGSTRFIELD(line) MSGSTRFIELD1(line) #define _S(n, str) char MSGSTRFIELD(__LINE__)[sizeof(#n)]; #include <errlist.h> #undef _S }; char str[0]; } _sys_errname = { { #define _S(n, s) #n, #include <errlist.h> #undef _S } }; static const unsigned short _sys_errnameidx[] = { #define _S(n, s) \ [ERR_MAP(n)] = offsetof(union sys_errname_t, MSGSTRFIELD(__LINE__)), #include <errlist.h> #undef _S }; const char * __get_errname (int errnum) { int mapped = ERR_MAP (errnum); if (mapped < 0 || mapped >= array_length (_sys_errnameidx) || (mapped > 0 && _sys_errnameidx[mapped] == 0)) return NULL; return _sys_errname.str + _sys_errnameidx[mapped]; }