Cregit: Linux 5.6: kasan-checks.h

Contributors: 4
Author	Tokens	Token Proportion	Commits	Commit Proportion
Marco Elver	79	54.86%	2	40.00%
Andrey Ryabinin	60	41.67%	1	20.00%
Dmitriy Vyukov	4	2.78%	1	20.00%
Greg Kroah-Hartman	1	0.69%	1	20.00%
Total	144		5

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_KASAN_CHECKS_H
#define _LINUX_KASAN_CHECKS_H

#include <linux/types.h>

/*
 * __kasan_check_*: Always available when KASAN is enabled. This may be used
 * even in compilation units that selectively disable KASAN, but must use KASAN
 * to validate access to an address.   Never use these in header files!
 */
#ifdef CONFIG_KASAN
bool __kasan_check_read(const volatile void *p, unsigned int size);
bool __kasan_check_write(const volatile void *p, unsigned int size);
#else
static inline bool __kasan_check_read(const volatile void *p, unsigned int size)
{
	return true;
}
static inline bool __kasan_check_write(const volatile void *p, unsigned int size)
{
	return true;
}
#endif

/*
 * kasan_check_*: Only available when the particular compilation unit has KASAN
 * instrumentation enabled. May be used in header files.
 */
#ifdef __SANITIZE_ADDRESS__
#define kasan_check_read __kasan_check_read
#define kasan_check_write __kasan_check_write
#else
static inline bool kasan_check_read(const volatile void *p, unsigned int size)
{
	return true;
}
static inline bool kasan_check_write(const volatile void *p, unsigned int size)
{
	return true;
}
#endif

#endif