stackprotector.h

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