* Copyright 2021, Jérôme Duval, jerome.duval@gmail.com.
* Distributed under the terms of the MIT License.
*/
#include <fcntl.h>
#include <signal.h>
#include <stdlib.h>
#include <sys/cdefs.h>
#include "private/system/symbol_visibility.h"
extern "C" {
long __stack_chk_guard = 0;
void
__init_stack_protector()
{
if (__stack_chk_guard != 0)
return;
int status = getentropy(&__stack_chk_guard, sizeof(__stack_chk_guard));
if (status != 0) {
unsigned char* p = (unsigned char *)&__stack_chk_guard;
p[0] = 0;
p[1] = 0;
p[2] = '\n';
p[3] = 0xff;
}
}
void
__stack_chk_fail()
{
HIDDEN_FUNCTION(__stack_chk_fail_local);
sigset_t mask;
sigfillset(&mask);
sigdelset(&mask, SIGABRT);
sigprocmask(SIG_BLOCK, &mask, NULL);
abort();
}
}
extern "C" void __stack_chk_fail_local() HIDDEN_FUNCTION_ATTRIBUTE;
__weak_reference(__stack_chk_fail, __stack_chk_fail_local);
