projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |