stackprotector.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_STACKPROTECTOR_H
 3#define _ASM_STACKPROTECTOR_H 1
 4
 5extern unsigned long __stack_chk_guard;
 6
 7/*
 8 * Initialize the stackprotector canary value.
 9 *
10 * NOTE: this must only be called from functions that never return,
11 * and it must always be inlined.
12 */
13static __always_inline void boot_init_stack_canary(void)
14{
15	unsigned long canary = get_random_canary();
16
17	current->stack_canary = canary;
18	__stack_chk_guard = current->stack_canary;
19}
20
21#endif /* __ASM_SH_STACKPROTECTOR_H */