hook_notify_head_t
static int hook_notify_register(hook_notify_head_t *head,
static int hook_notify_unregister(hook_notify_head_t *head,
static void hook_notify_run(hook_notify_head_t *head, char *family,
hook_notify_register(hook_notify_head_t *head, hook_notify_fn_t callback,
hook_notify_unregister(hook_notify_head_t *head,
hook_notify_run(hook_notify_head_t *head, char *family, char *event,
hook_notify_head_t hei_nhead;
hook_notify_head_t hfi_nhead;
hook_notify_head_t hks_nhead;