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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; | |
a5af5aa8 | 8 | struct vm_struct; |
0b24becc AR |
9 | |
10 | #ifdef CONFIG_KASAN | |
11 | ||
12 | #define KASAN_SHADOW_SCALE_SHIFT 3 | |
13 | #define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) | |
14 | ||
15 | #include <asm/kasan.h> | |
16 | #include <linux/sched.h> | |
17 | ||
18 | static inline void *kasan_mem_to_shadow(const void *addr) | |
19 | { | |
20 | return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT) | |
21 | + KASAN_SHADOW_OFFSET; | |
22 | } | |
23 | ||
24 | /* Enable reporting bugs after kasan_disable_current() */ | |
25 | static inline void kasan_enable_current(void) | |
26 | { | |
27 | current->kasan_depth++; | |
28 | } | |
29 | ||
30 | /* Disable reporting bugs for current task */ | |
31 | static inline void kasan_disable_current(void) | |
32 | { | |
33 | current->kasan_depth--; | |
34 | } | |
35 | ||
36 | void kasan_unpoison_shadow(const void *address, size_t size); | |
37 | ||
b8c73fc2 AR |
38 | void kasan_alloc_pages(struct page *page, unsigned int order); |
39 | void kasan_free_pages(struct page *page, unsigned int order); | |
40 | ||
0316bec2 AR |
41 | void kasan_poison_slab(struct page *page); |
42 | void kasan_unpoison_object_data(struct kmem_cache *cache, void *object); | |
43 | void kasan_poison_object_data(struct kmem_cache *cache, void *object); | |
44 | ||
45 | void kasan_kmalloc_large(const void *ptr, size_t size); | |
46 | void kasan_kfree_large(const void *ptr); | |
47 | void kasan_kmalloc(struct kmem_cache *s, const void *object, size_t size); | |
48 | void kasan_krealloc(const void *object, size_t new_size); | |
49 | ||
50 | void kasan_slab_alloc(struct kmem_cache *s, void *object); | |
51 | void kasan_slab_free(struct kmem_cache *s, void *object); | |
52 | ||
bebf56a1 | 53 | int kasan_module_alloc(void *addr, size_t size); |
a5af5aa8 | 54 | void kasan_free_shadow(const struct vm_struct *vm); |
bebf56a1 | 55 | |
0b24becc AR |
56 | #else /* CONFIG_KASAN */ |
57 | ||
58 | static inline void kasan_unpoison_shadow(const void *address, size_t size) {} | |
59 | ||
60 | static inline void kasan_enable_current(void) {} | |
61 | static inline void kasan_disable_current(void) {} | |
62 | ||
b8c73fc2 AR |
63 | static inline void kasan_alloc_pages(struct page *page, unsigned int order) {} |
64 | static inline void kasan_free_pages(struct page *page, unsigned int order) {} | |
65 | ||
0316bec2 AR |
66 | static inline void kasan_poison_slab(struct page *page) {} |
67 | static inline void kasan_unpoison_object_data(struct kmem_cache *cache, | |
68 | void *object) {} | |
69 | static inline void kasan_poison_object_data(struct kmem_cache *cache, | |
70 | void *object) {} | |
71 | ||
72 | static inline void kasan_kmalloc_large(void *ptr, size_t size) {} | |
73 | static inline void kasan_kfree_large(const void *ptr) {} | |
74 | static inline void kasan_kmalloc(struct kmem_cache *s, const void *object, | |
75 | size_t size) {} | |
76 | static inline void kasan_krealloc(const void *object, size_t new_size) {} | |
77 | ||
78 | static inline void kasan_slab_alloc(struct kmem_cache *s, void *object) {} | |
79 | static inline void kasan_slab_free(struct kmem_cache *s, void *object) {} | |
80 | ||
bebf56a1 | 81 | static inline int kasan_module_alloc(void *addr, size_t size) { return 0; } |
a5af5aa8 | 82 | static inline void kasan_free_shadow(const struct vm_struct *vm) {} |
bebf56a1 | 83 | |
0b24becc AR |
84 | #endif /* CONFIG_KASAN */ |
85 | ||
86 | #endif /* LINUX_KASAN_H */ |