| /* Error constants. Generic version. |
| Copyright (C) 1991-2018 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* This file defines the errno constants. */ |
| |
| #ifndef _BITS_ERRNO_H |
| #define _BITS_ERRNO_H 1 |
| |
| #if !defined _ERRNO_H |
| # error "Never include <bits/errno.h> directly; use <errno.h> instead." |
| #endif |
| |
| #error "Generic bits/errno.h included -- port is incomplete." |
| |
| /* Authors of new ports of the GNU C Library must override this file |
| with their own bits/errno.h in an appropriate subdirectory of |
| sysdeps/. Its function is to define all of the error constants |
| from C2011 and POSIX.1-2008, with values appropriate to the |
| operating system, and any additional OS-specific error constants. |
| |
| C2011 requires all error constants to be object-like macros that |
| expand to "integer constant expressions with type int, positive |
| values, and suitable for use in #if directives". Moreover, all of |
| their names must begin with a capital E, followed immediately by |
| either another capital letter, or a digit. It is OK to define |
| macros that are not error constants, but only in the implementation |
| namespace. |
| |
| errno.h is sometimes included from assembly language. Therefore, |
| when __ASSEMBLER__ is defined, bits/errno.h may only define macros; |
| it may not make any other kind of C declaration or definition. |
| Also, the error constants should, if at all possible, expand to |
| simple decimal or hexadecimal numbers. */ |
| |
| #endif /* bits/errno.h. */ |