glibc/sysdeps/generic/tls-internal.c

40 lines
1.3 KiB
C

/* Per-thread state. Generic version.
Copyright (C) 2020-2022 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
<https://www.gnu.org/licenses/>. */
#include <stdlib/arc4random.h>
#include <string.h>
#include <tls-internal.h>
__thread struct tls_internal_t __tls_internal;
void
__glibc_tls_internal_free (void)
{
free (__tls_internal.strsignal_buf);
free (__tls_internal.strerror_l_buf);
if (__tls_internal.rand_state != NULL)
{
/* Clear any lingering random state prior so if the thread stack is
cached it won't leak any data. */
explicit_bzero (__tls_internal.rand_state,
sizeof (*__tls_internal.rand_state));
free (__tls_internal.rand_state);
}
}