diff options
Diffstat (limited to 'include/linux/thread_info.h')
| -rw-r--r-- | include/linux/thread_info.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index 352b1542f5cc..2b5b10eed74f 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -105,6 +105,31 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag) #define tif_need_resched() test_thread_flag(TIF_NEED_RESCHED) +#ifndef CONFIG_HAVE_ARCH_WITHIN_STACK_FRAMES +static inline int arch_within_stack_frames(const void * const stack, + const void * const stackend, + const void *obj, unsigned long len) +{ + return 0; +} +#endif + +#ifdef CONFIG_HARDENED_USERCOPY +extern void __check_object_size(const void *ptr, unsigned long n, + bool to_user); + +static __always_inline void check_object_size(const void *ptr, unsigned long n, + bool to_user) +{ + if (!__builtin_constant_p(n)) + __check_object_size(ptr, n, to_user); +} +#else +static inline void check_object_size(const void *ptr, unsigned long n, + bool to_user) +{ } +#endif /* CONFIG_HARDENED_USERCOPY */ + #endif /* __KERNEL__ */ #endif /* _LINUX_THREAD_INFO_H */ |