193 hook_establish(head, tail, fn, arg)  in hook_establish()  argument
194 	struct hook_desc_head *head;  in hook_establish()
208 		TAILQ_INSERT_TAIL(head, hdp, hd_list);
210 		TAILQ_INSERT_HEAD(head, hdp, hd_list);
216 hook_disestablish(head, vhook)  in hook_disestablish()  argument
217 	struct hook_desc_head *head;  in hook_disestablish()
223 	for (hdp = TAILQ_FIRST(head); hdp != NULL;
231 	TAILQ_REMOVE(head, hdp, hd_list);
242 dohooks(struct hook_desc_head *head, int flags)  in dohooks()  argument
247 		TAILQ_FOREACH(hdp, head, hd_list) {  in dohooks()
251 		while ((hdp = TAILQ_FIRST(head)) != NULL) {  in dohooks()
252 			TAILQ_REMOVE(head, hdp, hd_list);  in dohooks()