kernel/livepatch/core.h

   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 */