sys/kern/kern_sysctl.c

1508 	if (req->oldptr != NULL) {
1611 	if (req->oldptr) {
1619 			bcopy(p, (char *)req->oldptr + req->oldidx, i);
1622 	if (req->oldptr && i != l)
1657 		req.oldptr= old;
1672 		vsunlock(req.oldptr, req.validlen);
1678 		if (req.oldptr && req.oldidx > req.validlen)
1719 	if (req->oldptr == NULL)
1737 			error = copyout_nofault(p, (char *)req->oldptr +
1740 			error = copyout(p, (char *)req->oldptr + origidx, i);
1777 	if (req->lock != REQ_WIRED && req->oldptr &&
1780 			ret = vslock(req->oldptr, wiredlen);
1883 		if ((req->oldptr && !(oid->oid_kind & CTLFLAG_CAPRD)) ||
2009 	req.oldptr = old;
2025 	if (req.oldptr && req.oldlen > PAGE_SIZE) {
2044 		vsunlock(req.oldptr, req.validlen);
2052 		if (req.oldptr && req.oldidx > req.validlen)