func NameToMIB(name string) (mib []_C_int, err error) {
const siz = unsafe.Sizeof(mib[0])
var buf [syscall.CTL_MAXNAME + 2]_C_int
n := uintptr(syscall.CTL_MAXNAME) * siz
p := (*byte)(unsafe.Pointer(&buf[0]))
bytes, err := syscall.ByteSliceFromString(name)
if err != nil {
return nil, err
}
if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
return nil, err
}
return buf[0 : n/siz], nil
}
func SetString(name string, value string) error {
mib, err := NameToMIB(name)
if err != nil {
return err
}
valueslc, err := syscall.ByteSliceFromString(value)
if err != nil {
return err
}
if err := sysctl(mib, nil, nil, &valueslc[0], uintptr(len(value))); err != nil {
return err
}
return nil
}