Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef _LINUX_KASAN_H
2#define _LINUX_KASAN_H
3
4#include <linux/types.h>
5
6struct kmem_cache;
7struct page;
8struct vm_struct;
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
18static 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() */
25static inline void kasan_enable_current(void)
26{
27 current->kasan_depth++;
28}
29
30/* Disable reporting bugs for current task */
31static inline void kasan_disable_current(void)
32{
33 current->kasan_depth--;
34}
35
36void kasan_unpoison_shadow(const void *address, size_t size);
37
38void kasan_alloc_pages(struct page *page, unsigned int order);
39void kasan_free_pages(struct page *page, unsigned int order);
40
41void kasan_poison_slab(struct page *page);
42void kasan_unpoison_object_data(struct kmem_cache *cache, void *object);
43void kasan_poison_object_data(struct kmem_cache *cache, void *object);
44
45void kasan_kmalloc_large(const void *ptr, size_t size);
46void kasan_kfree_large(const void *ptr);
47void kasan_kmalloc(struct kmem_cache *s, const void *object, size_t size);
48void kasan_krealloc(const void *object, size_t new_size);
49
50void kasan_slab_alloc(struct kmem_cache *s, void *object);
51void kasan_slab_free(struct kmem_cache *s, void *object);
52
53int kasan_module_alloc(void *addr, size_t size);
54void kasan_free_shadow(const struct vm_struct *vm);
55
56#else /* CONFIG_KASAN */
57
58static inline void kasan_unpoison_shadow(const void *address, size_t size) {}
59
60static inline void kasan_enable_current(void) {}
61static inline void kasan_disable_current(void) {}
62
63static inline void kasan_alloc_pages(struct page *page, unsigned int order) {}
64static inline void kasan_free_pages(struct page *page, unsigned int order) {}
65
66static inline void kasan_poison_slab(struct page *page) {}
67static inline void kasan_unpoison_object_data(struct kmem_cache *cache,
68 void *object) {}
69static inline void kasan_poison_object_data(struct kmem_cache *cache,
70 void *object) {}
71
72static inline void kasan_kmalloc_large(void *ptr, size_t size) {}
73static inline void kasan_kfree_large(const void *ptr) {}
74static inline void kasan_kmalloc(struct kmem_cache *s, const void *object,
75 size_t size) {}
76static inline void kasan_krealloc(const void *object, size_t new_size) {}
77
78static inline void kasan_slab_alloc(struct kmem_cache *s, void *object) {}
79static inline void kasan_slab_free(struct kmem_cache *s, void *object) {}
80
81static inline int kasan_module_alloc(void *addr, size_t size) { return 0; }
82static inline void kasan_free_shadow(const struct vm_struct *vm) {}
83
84#endif /* CONFIG_KASAN */
85
86#endif /* LINUX_KASAN_H */