diff options
Diffstat (limited to 'include/errno.h')
| -rw-r--r-- | include/errno.h | 70 |
1 files changed, 60 insertions, 10 deletions
diff --git a/include/errno.h b/include/errno.h index aa7e6bcae..645a439db 100644 --- a/include/errno.h +++ b/include/errno.h @@ -1,23 +1,73 @@ -#ifndef _ERRNO_H -#define _ERRNO_H +/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* + * ISO C99 Standard: 7.5 Errors <errno.h> + */ + +#ifndef _ERRNO_H + +/* The includer defined __need_Emath if he wants only the definitions + of EDOM and ERANGE, and not everything else. */ +#ifndef __need_Emath +#define _ERRNO_H 1 #include <features.h> -#include <bits/errno.h> +#endif __BEGIN_DECLS -extern int sys_nerr; -extern const char *const sys_errlist[]; +/* Get the error number constants from the system-specific file. + This file will test __need_Emath and _ERRNO_H. */ +#include <bits/errno.h> +#undef __need_Emath -#define _sys_nerr sys_nerr -#define _sys_errlist sys_errlist +#ifdef _ERRNO_H +/* Declare the `errno' variable, unless it's defined as a macro by + bits/errno.h. This is the case in GNU, where it is a per-thread + variable. This redeclaration using the macro still works, but it + will be a function declaration without a prototype and may trigger + a -Wstrict-prototypes warning. */ #ifndef errno -extern int errno; +extern int errno; #endif -extern void perror __P ((__const char* __s)); -extern char* strerror __P ((int __errno)); + +#ifdef __USE_GNU + +/* The full and simple forms of the name with which the program was + invoked. These variables are set up automatically at startup based on + the value of ARGV[0] (this works only if you use GNU ld). */ +extern char *program_invocation_name, *program_invocation_short_name; +#endif /* __USE_GNU */ +#endif /* _ERRNO_H */ __END_DECLS +#endif /* _ERRNO_H */ + +/* The Hurd <bits/errno.h> defines `error_t' as an enumerated type so + that printing `error_t' values in the debugger shows the names. We + might need this definition sometimes even if this file was included + before. */ +#if defined __USE_GNU || defined __need_error_t +# ifndef __error_t_defined +typedef int error_t; +# define __error_t_defined 1 +# endif +# undef __need_error_t #endif |