pnp_sysdev
struct pnp_sysdev node;
struct pnp_sysdev *pd;
devnodebuf = malloc(bigdev + (sizeof(struct pnp_sysdevargs) - sizeof(struct pnp_sysdev)),
if (pd->size < sizeof(struct pnp_sysdev)) {
pd->size - sizeof(struct pnp_sysdev), 0);
left = pd->size - sizeof(struct pnp_sysdev);