mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
b5f6e0fc7d
This changes {,__}kasan_check_{read,write} functions to return a boolean
denoting if the access was valid or not.
[sfr@canb.auug.org.au: include types.h for "bool"]
Link: http://lkml.kernel.org/r/20190705184949.13cdd021@canb.auug.org.au
Link: http://lkml.kernel.org/r/20190626142014.141844-3-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* 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
|