package kernel import ( "fmt" "syscall" "unsafe" ) type KernelVersionInfo struct { kvi string major int minor int build int } func (k *KernelVersionInfo) String() string { return fmt.Sprintf("%d.%d %d (%s)", k.major, k.minor, k.build, k.kvi) } func GetKernelVersion() (*KernelVersionInfo, error) { var ( h syscall.Handle dwVersion uint32 err error ) KVI := &KernelVersionInfo{"Unknown", 0, 0, 0} if err = syscall.RegOpenKeyEx(syscall.HKEY_LOCAL_MACHINE, syscall.StringToUTF16Ptr(`SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\`), 0, syscall.KEY_READ, &h); err != nil { return KVI, err } defer syscall.RegCloseKey(h) var buf [1 << 10]uint16 var typ uint32 n := uint32(len(buf) * 2) // api expects array of bytes, not uint16 if err = syscall.RegQueryValueEx(h, syscall.StringToUTF16Ptr("BuildLabEx"), nil, &typ, (*byte)(unsafe.Pointer(&buf[0])), &n); err != nil { return KVI, err } KVI.kvi = syscall.UTF16ToString(buf[:]) // Important - docker.exe MUST be manifested for this API to return // the correct information. if dwVersion, err = syscall.GetVersion(); err != nil { return KVI, err } KVI.major = int(dwVersion & 0xFF) KVI.minor = int((dwVersion & 0XFF00) >> 8) KVI.build = int((dwVersion & 0xFFFF0000) >> 16) return KVI, nil }