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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
10517429 JK |
2 | #ifndef _LIVEPATCH_CORE_H |
3 | #define _LIVEPATCH_CORE_H | |
4 | ||
93862e38 JL |
5 | #include <linux/livepatch.h> |
6 | ||
10517429 | 7 | extern struct mutex klp_mutex; |
68007289 | 8 | extern struct list_head klp_patches; |
10517429 | 9 | |
ecba29f4 PM |
10 | #define klp_for_each_patch_safe(patch, tmp_patch) \ |
11 | list_for_each_entry_safe(patch, tmp_patch, &klp_patches, list) | |
12 | ||
13 | #define klp_for_each_patch(patch) \ | |
14 | list_for_each_entry(patch, &klp_patches, list) | |
15 | ||
7e35e4eb PM |
16 | void klp_free_patch_async(struct klp_patch *patch); |
17 | void klp_free_replaced_patches_async(struct klp_patch *new_patch); | |
18 | void klp_unpatch_replaced_patches(struct klp_patch *new_patch); | |
d697bad5 | 19 | void klp_discard_nops(struct klp_patch *new_patch); |
958ef1e3 | 20 | |
93862e38 JL |
21 | static inline bool klp_is_object_loaded(struct klp_object *obj) |
22 | { | |
23 | return !obj->name || obj->mod; | |
24 | } | |
25 | ||
26 | static inline int klp_pre_patch_callback(struct klp_object *obj) | |
27 | { | |
5aaf1ab5 | 28 | int ret = 0; |
93862e38 | 29 | |
5aaf1ab5 PM |
30 | if (obj->callbacks.pre_patch) |
31 | ret = (*obj->callbacks.pre_patch)(obj); | |
93862e38 JL |
32 | |
33 | obj->callbacks.post_unpatch_enabled = !ret; | |
34 | ||
35 | return ret; | |
36 | } | |
37 | ||
38 | static inline void klp_post_patch_callback(struct klp_object *obj) | |
39 | { | |
40 | if (obj->callbacks.post_patch) | |
41 | (*obj->callbacks.post_patch)(obj); | |
42 | } | |
43 | ||
44 | static inline void klp_pre_unpatch_callback(struct klp_object *obj) | |
45 | { | |
46 | if (obj->callbacks.pre_unpatch) | |
47 | (*obj->callbacks.pre_unpatch)(obj); | |
48 | } | |
49 | ||
50 | static inline void klp_post_unpatch_callback(struct klp_object *obj) | |
51 | { | |
52 | if (obj->callbacks.post_unpatch_enabled && | |
53 | obj->callbacks.post_unpatch) | |
54 | (*obj->callbacks.post_unpatch)(obj); | |
5aaf1ab5 PM |
55 | |
56 | obj->callbacks.post_unpatch_enabled = false; | |
93862e38 JL |
57 | } |
58 | ||
10517429 | 59 | #endif /* _LIVEPATCH_CORE_H */ |