cpc_cpuref
if ((ccp = cpc_cpuref(cpc)) == NULL)
return (cpc->cpc_cpuref);
if (syscall(SYS_cpc, CPC_CPUREF, -1, &cpc->cpc_cpuref, 0, 0) != 0)
extern const char *cpc_cpuref(cpc_t *cpc);
char cpc_cpuref[CPC_MAX_CPUREF];