door_upcall
static void door_upcall(void *cookie, char *args, size_t alen, door_desc_t *ddp,
upcall_door = door_create(door_upcall, NULL,
upcall_door = door_create(door_upcall, (void *)subp,
upcall_door = door_xcreate(door_upcall, (void *)subp,
rc = door_upcall(kctx->auk_current_vp, &darg, NULL,
(void) door_upcall(DTOV(dp), &unref_args, NULL, SIZE_MAX, 0);
return (door_upcall(realvp, param, cred, max_data, max_desc));
int door_upcall(vnode_t *, door_arg_t *, struct cred *, size_t, uint_t);