mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 02:20:10 +00:00
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/* Definition of `errno' variable. Canonical version.
|
|
Copyright (C) 2002, 2004 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. */
|
|
|
|
#include <errno.h>
|
|
#include <tls.h>
|
|
#include <dl-sysdep.h>
|
|
#undef errno
|
|
|
|
#if RTLD_PRIVATE_ERRNO
|
|
|
|
/* Code compiled for rtld refers only to this name. */
|
|
int rtld_errno attribute_hidden;
|
|
|
|
#elif USE___THREAD
|
|
|
|
__thread int errno;
|
|
extern __thread int __libc_errno __attribute__ ((alias ("errno")))
|
|
attribute_hidden;
|
|
|
|
#else
|
|
|
|
/* This differs from plain `int errno;' in that it doesn't create
|
|
a common definition, but a plain symbol that resides in .bss,
|
|
which can have an alias. */
|
|
int errno __attribute__ ((nocommon));
|
|
strong_alias (errno, _errno)
|
|
|
|
/* We declare these with compat_symbol so that they are not visible at
|
|
link time. Programs must use the accessor functions. RTLD is special,
|
|
since it's not exported from there at any time. */
|
|
# if defined HAVE_ELF && defined SHARED && defined DO_VERSIONING
|
|
# include <shlib-compat.h>
|
|
compat_symbol (libc, errno, errno, GLIBC_2_0);
|
|
compat_symbol (libc, _errno, _errno, GLIBC_2_0);
|
|
# endif
|
|
|
|
#endif
|