diff options
| author | Marco Elver <elver@google.com> | 2019-07-12 06:54:07 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 21:05:42 +0300 |
| commit | b5f6e0fc7d60e0234dac82498e90dfe9027bad1f (patch) | |
| tree | 41492a12b523dbf5af7211b71cdc2569204945f8 /include | |
| parent | 7d8ad890dad00f6cd64bfb44d9be4fceb10cf819 (diff) | |
| download | linux-b5f6e0fc7d60e0234dac82498e90dfe9027bad1f.tar.xz | |
mm/kasan: change kasan_check_{read,write} to return boolean
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kasan-checks.h | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/include/linux/kasan-checks.h b/include/linux/kasan-checks.h index 221f05fbddd7..ac6aba632f2d 100644 --- a/include/linux/kasan-checks.h +++ b/include/linux/kasan-checks.h @@ -2,19 +2,25 @@ #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 -void __kasan_check_read(const volatile void *p, unsigned int size); -void __kasan_check_write(const volatile void *p, unsigned int size); +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 void __kasan_check_read(const volatile void *p, unsigned int size) -{ } -static inline void __kasan_check_write(const volatile void *p, unsigned int size) -{ } +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 /* @@ -25,10 +31,14 @@ static inline void __kasan_check_write(const volatile void *p, unsigned int size #define kasan_check_read __kasan_check_read #define kasan_check_write __kasan_check_write #else -static inline void kasan_check_read(const volatile void *p, unsigned int size) -{ } -static inline void kasan_check_write(const volatile void *p, unsigned int size) -{ } +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 |