35 lines
1.3 KiB
C
35 lines
1.3 KiB
C
/* __errno_location -- helper function for locating per-thread errno value
|
|
Copyright (C) 2002-2018 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/>. */
|
|
|
|
#if IS_IN (rtld)
|
|
/* rtld can not access TLS too early, thus rtld_errno.
|
|
|
|
Instead of making __open/__close pass errno from TLS to rtld_errno, simply
|
|
use a weak __errno_location using rtld_errno, which will be overriden by the
|
|
libc definition. */
|
|
static int rtld_errno;
|
|
int * weak_function
|
|
__errno_location (void)
|
|
{
|
|
return &rtld_errno;
|
|
}
|
|
libc_hidden_weak (__errno_location)
|
|
#else
|
|
#include "../../../csu/errno-loc.c"
|
|
#endif
|