fops              486 kern/kern_event.c 	struct filterops *fops = NULL;
fops              494 kern/kern_event.c 		fops = sysfilt_ops[~kev->filter];	/* to 0-base index */
fops              497 kern/kern_event.c 	if (fops == NULL) {
fops              506 kern/kern_event.c 	if (fops->f_isfd) {
fops              551 kern/kern_event.c 			kn->kn_fop = fops;
fops              568 kern/kern_event.c 			if ((error = fops->f_attach(kn)) != 0) {