user_update 40 include/keys/user-type.h extern int user_update(struct key *key, struct key_preparsed_payload *prep); user_update 28 security/keys/user_defined.c .update = user_update, user_update 48 security/keys/user_defined.c .update = user_update, user_update 122 security/keys/user_defined.c EXPORT_SYMBOL_GPL(user_update);