300 		struct sem_undo *suptr = SEMU(i);  in seminit()  local
301 		suptr->un_proc = NULL;  in seminit()
302 		LIST_INSERT_HEAD(&semu_free_list, suptr, un_next);  in seminit()
415 	struct sem_undo *suptr;  in semu_alloc()  local
418 	if ((suptr = LIST_FIRST(&semu_free_list)) == NULL)  in semu_alloc()
420 	LIST_REMOVE(suptr, un_next);  in semu_alloc()
421 	LIST_INSERT_HEAD(&semu_list, suptr, un_next);  in semu_alloc()
422 	suptr->un_cnt = 0;  in semu_alloc()
423 	suptr->un_proc = td->td_proc;  in semu_alloc()
424 	return (suptr);  in semu_alloc()
428 semu_try_free(struct sem_undo *suptr)  in semu_try_free()  argument
433 	if (suptr->un_cnt != 0)  in semu_try_free()
435 	LIST_REMOVE(suptr, un_next);  in semu_try_free()
436 	LIST_INSERT_HEAD(&semu_free_list, suptr, un_next);  in semu_try_free()
449 	struct sem_undo *suptr;  in semundo_adjust()  local
457 	suptr = *supptr;  in semundo_adjust()
458 	if (suptr == NULL) {  in semundo_adjust()
459 		LIST_FOREACH(suptr, &semu_list, un_next) {  in semundo_adjust()
460 			if (suptr->un_proc == p) {  in semundo_adjust()
461 				*supptr = suptr;  in semundo_adjust()
465 		if (suptr == NULL) {  in semundo_adjust()
468 			suptr = semu_alloc(td);  in semundo_adjust()
469 			if (suptr == NULL)  in semundo_adjust()
471 			*supptr = suptr;  in semundo_adjust()
479 	sunptr = &suptr->un_ent[0];  in semundo_adjust()
480 	for (i = 0; i < suptr->un_cnt; i++, sunptr++) {  in semundo_adjust()
490 			suptr->un_cnt--;  in semundo_adjust()
491 			if (i < suptr->un_cnt)  in semundo_adjust()
492 				suptr->un_ent[i] =  in semundo_adjust()
493 				    suptr->un_ent[suptr->un_cnt];  in semundo_adjust()
494 			if (suptr->un_cnt == 0)  in semundo_adjust()
495 				semu_try_free(suptr);  in semundo_adjust()
505 	if (suptr->un_cnt != seminfo.semume) {  in semundo_adjust()
506 		sunptr = &suptr->un_ent[suptr->un_cnt];  in semundo_adjust()
507 		suptr->un_cnt++;  in semundo_adjust()
520 	struct sem_undo *suptr, *suptr1;  in semundo_clear()  local
525 	LIST_FOREACH_SAFE(suptr, &semu_list, un_next, suptr1) {  in semundo_clear()
526 		sunptr = &suptr->un_ent[0];  in semundo_clear()
527 		for (i = 0; i < suptr->un_cnt; i++, sunptr++) {  in semundo_clear()
531 				suptr->un_cnt--;  in semundo_clear()
532 				if (i < suptr->un_cnt) {  in semundo_clear()
533 					suptr->un_ent[i] =  in semundo_clear()
534 					    suptr->un_ent[suptr->un_cnt];  in semundo_clear()
537 				semu_try_free(suptr);  in semundo_clear()
1096 	struct sem_undo *suptr;  in sys_semop()  local
1324 		suptr = NULL;  in sys_semop()
1337 			error = semundo_adjust(td, &suptr, semid, seq,  in sys_semop()
1358 				if (semundo_adjust(td, &suptr, semid, seq,  in sys_semop()
1407 	struct sem_undo *suptr;  in semexit_myhook()  local
1420 	LIST_FOREACH(suptr, &semu_list, un_next) {  in semexit_myhook()
1421 		if (suptr->un_proc == p)  in semexit_myhook()
1424 	if (suptr == NULL) {  in semexit_myhook()
1428 	LIST_REMOVE(suptr, un_next);  in semexit_myhook()
1431 	    suptr->un_cnt));  in semexit_myhook()
1436 	if (suptr->un_cnt > 0) {  in semexit_myhook()
1438 		for (ix = 0; ix < suptr->un_cnt; ix++) {  in semexit_myhook()
1439 			semid = suptr->un_ent[ix].un_id;  in semexit_myhook()
1440 			semnum = suptr->un_ent[ix].un_num;  in semexit_myhook()
1441 			adjval = suptr->un_ent[ix].un_adjval;  in semexit_myhook()
1442 			seq = suptr->un_ent[ix].un_seq;  in semexit_myhook()
1457 			    suptr->un_proc, suptr->un_ent[ix].un_id,  in semexit_myhook()
1458 			    suptr->un_ent[ix].un_num,  in semexit_myhook()
1459 			    suptr->un_ent[ix].un_adjval,  in semexit_myhook()
1479 	suptr->un_proc = NULL;  in semexit_myhook()
1480 	suptr->un_cnt = 0;  in semexit_myhook()
1481 	LIST_INSERT_HEAD(&semu_free_list, suptr, un_next);  in semexit_myhook()