arch/powerpc/include/asm/stackprotector.h

Source file repositories/reference/linux-study-clean/arch/powerpc/include/asm/stackprotector.h

File Facts

System
Linux kernel
Corpus path
arch/powerpc/include/asm/stackprotector.h
Extension
.h
Size
604 bytes
Lines
31
Domain
Architecture Layer
Bucket
arch/powerpc
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _ASM_STACKPROTECTOR_H
#define _ASM_STACKPROTECTOR_H

#include <asm/reg.h>
#include <asm/current.h>
#include <asm/paca.h>

/*
 * Initialize the stackprotector canary value.
 *
 * NOTE: this must only be called from functions that never return,
 * and it must always be inlined.
 */
static __always_inline void boot_init_stack_canary(void)
{
	unsigned long canary = get_random_canary();

	current->stack_canary = canary;
#ifdef CONFIG_PPC64
	get_paca()->canary = canary;
#endif
}

#endif	/* _ASM_STACKPROTECTOR_H */

Annotation

Implementation Notes