12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697 |
- /* Copyright (C) 1991,92,93,94,95,96,97,2002 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/>. */
- /*
- * 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>
- #endif
- __BEGIN_DECLS
- /* 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
- #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;
- #endif
- #ifdef _LIBC
- extern const char *__progname, *__progname_full;
- #endif
- #if defined __USE_GNU && defined __UCLIBC_HAS_PROGRAM_INVOCATION_NAME__
- /* 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 const char *program_invocation_name, *program_invocation_short_name;
- #endif /* __USE_GNU */
- #endif /* _ERRNO_H */
- __END_DECLS
- #ifdef _LIBC
- #ifdef IS_IN_rtld
- # undef errno
- # define errno _dl_errno
- extern int _dl_errno; /* attribute_hidden */
- #elif defined __UCLIBC_HAS_TLS__
- # if !defined NOT_IN_libc || defined IS_IN_libpthread
- # undef errno
- # ifndef NOT_IN_libc
- # define errno __libc_errno
- # else
- # define errno errno /* For #ifndef errno tests. */
- # endif
- extern __thread int errno attribute_tls_model_ie;
- # endif
- #endif
- #ifndef __set_errno
- #define __set_errno(val) (errno = (val))
- #endif
- #endif /* _LIBC */
- #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
|