devfs_set_cdevpriv
err = devfs_set_cdevpriv(fp, cpd, &usb_cdevpriv_dtor);
(void)devfs_set_cdevpriv(ap->a_fpp ? *ap->a_fpp : NULL, priv, uvc_v4l2_dtor);
if (devfs_set_cdevpriv(*ap->a_fpp, pcc, &cuse_client_free)) {
if (devfs_set_cdevpriv(*ap->a_fpp, pcs, &cuse_server_free)) {
ret = devfs_set_cdevpriv(fp, client, &evdev_dtor);
error = devfs_set_cdevpriv(fp, dev, ipmi_dtor);
error = devfs_set_cdevpriv(fp, owner, dfbsd_nvmm_dtor);
error = devfs_set_cdevpriv(ap->a_fp, priv, netmap_dtor);
int devfs_set_cdevpriv(struct file *fp, void *priv, d_priv_dtor_t *dtr);
devfs_set_cdevpriv(fp, fmp, fuse_cdevpriv_dtor);