24 	if (name == NULL)  in find_env_callback()
25 		return NULL;  in find_env_callback()
35 	return NULL;  in find_env_callback()
59 	if (callback_list != NULL)  in env_callback_init()
70 		if (clbkp != NULL)  in env_callback_init()
85 	entry->callback = NULL;  in clear_callback()
99 	e.data	= NULL;  in set_callback()
100 	e.callback = NULL;  in set_callback()
104 	if (ep != NULL) {  in set_callback()
106 		if (value == NULL || strlen(value) == 0)  in set_callback()
107 			ep->callback = NULL;  in set_callback()
111 			if (clbkp != NULL)  in set_callback()
130 	env_attr_walk(ENV_CALLBACK_LIST_STATIC, set_callback, NULL);  in on_callbacks()
132 	env_attr_walk(value, set_callback, NULL);  in on_callbacks()