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0b24becc AR |
1 | #ifndef _LINUX_KASAN_H |
2 | #define _LINUX_KASAN_H | |
3 | ||
4 | #include <linux/types.h> | |
5 | ||
6 | struct kmem_cache; | |
7 | struct page; | |
8 | ||
9 | #ifdef CONFIG_KASAN | |
10 | ||
11 | #define KASAN_SHADOW_SCALE_SHIFT 3 | |
12 | #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) | |
13 | ||
14 | #include <asm/kasan.h> | |
15 | #include <linux/sched.h> | |
16 | ||
17 | static inline void *kasan_mem_to_shadow(const void *addr) | |
18 | { | |
19 | return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT) | |
20 | + KASAN_SHADOW_OFFSET; | |
21 | } | |
22 | ||
23 | /* Enable reporting bugs after kasan_disable_current() */ | |
24 | static inline void kasan_enable_current(void) | |
25 | { | |
26 | current->kasan_depth++; | |
27 | } | |
28 | ||
29 | /* Disable reporting bugs for current task */ | |
30 | static inline void kasan_disable_current(void) | |
31 | { | |
32 | current->kasan_depth--; | |
33 | } | |
34 | ||
35 | void kasan_unpoison_shadow(const void *address, size_t size); | |
36 | ||
37 | #else /* CONFIG_KASAN */ | |
38 | ||
39 | static inline void kasan_unpoison_shadow(const void *address, size_t size) {} | |
40 | ||
41 | static inline void kasan_enable_current(void) {} | |
42 | static inline void kasan_disable_current(void) {} | |
43 | ||
44 | #endif /* CONFIG_KASAN */ | |
45 | ||
46 | #endif /* LINUX_KASAN_H */ |