kvm_uread
__ssize_t kvm_uread (kvm_t *, pid_t, unsigned long, char *, __size_t);
if (kvm_uread(kd, pid, addr, (char *)kd->argv, cc) != cc)
if (kvm_uread(kd, pid, addr, kd->argbuf, PAGE_SIZE) !=
kvm_uread(kd, kp->kp_pid, ps_strings, (char *)&arginfo,