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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_KASAN_CHECKS_H
#define _LINUX_KASAN_CHECKS_H
#include <linux/types.h>
/*
* The annotations present in this file are only relevant for the software
* KASAN modes that rely on compiler instrumentation, and will be optimized
* away for the hardware tag-based KASAN mode. Use kasan_check_byte() instead.
*/
/*
* __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!
*/
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
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
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