Function fildesc_drvinit

freebsd/kern/kern_descrip.c:5174–5188

};

static void
fildesc_drvinit(void *unused)
{
	struct cdev *dev;

	dev = make_dev_credf(MAKEDEV_ETERNAL, &fildesc_cdevsw, 0, NULL,
	    UID_ROOT, GID_WHEEL, 0666, "fd/0");
	make_dev_alias(dev, "stdin");
	dev = make_dev_credf(MAKEDEV_ETERNAL, &fildesc_cdevsw, 1, NULL,
	    UID_ROOT, GID_WHEEL, 0666, "fd/1");
	make_dev_alias(dev, "stdout");
	dev = make_dev_credf(MAKEDEV_ETERNAL, &fildesc_cdevsw, 2, NULL,
	    UID_ROOT, GID_WHEEL, 0666, "fd/2");
	make_dev_alias(dev, "stderr");
}

SYSINIT(fildescdev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, fildesc_drvinit, NULL);