request_key_actor_t 40 include/linux/key-type.h typedef int (*request_key_actor_t)(struct key *auth_key, void *aux); request_key_actor_t 140 include/linux/key-type.h request_key_actor_t request_key; request_key_actor_t 227 security/keys/request_key.c request_key_actor_t actor;