1 #ifndef _LIVEPATCH_CORE_H 2 #define _LIVEPATCH_CORE_H 3 4 #include <linux/livepatch.h> 5 6 extern struct mutex klp_mutex; 7 8 static inline bool klp_is_object_loaded(struct klp_object *obj) 9 { 10 return !obj->name || obj->mod; 11 } 12 13 static inline int klp_pre_patch_callback(struct klp_object *obj) 14 { 15 int ret; 16 17 ret = (obj->callbacks.pre_patch) ? 18 (*obj->callbacks.pre_patch)(obj) : 0; 19 20 obj->callbacks.post_unpatch_enabled = !ret; 21 22 return ret; 23 } 24 25 static inline void klp_post_patch_callback(struct klp_object *obj) 26 { 27 if (obj->callbacks.post_patch) 28 (*obj->callbacks.post_patch)(obj); 29 } 30 31 static inline void klp_pre_unpatch_callback(struct klp_object *obj) 32 { 33 if (obj->callbacks.pre_unpatch) 34 (*obj->callbacks.pre_unpatch)(obj); 35 } 36 37 static inline void klp_post_unpatch_callback(struct klp_object *obj) 38 { 39 if (obj->callbacks.post_unpatch_enabled && 40 obj->callbacks.post_unpatch) 41 (*obj->callbacks.post_unpatch)(obj); 42 } 43 44 #endif /* _LIVEPATCH_CORE_H */ 45