Merge pull request #58498 from feiskyer/win-ver

Automatic merge from submit-queue (batch tested with PRs 56995, 58498, 57426, 58902, 58863). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Get windows kernel version directly from registry

**What this PR does / why we need it**:

#55143 gets windows kernel version by calling windows.GetVersion(), but it doesn't work on windows 10. From https://msdn.microsoft.com/en-us/library/windows/desktop/ms724439(v=vs.85).aspx, GetVersion requires app to be manifested.

Applications not manifested for Windows 8.1 or Windows 10 will return the Windows 8 OS version value (6.2). I tried a toy go program using GetVersion on Windows 10 and it returns 0x23f00206.

Given the limited win32 functions in golang, we should read from registry directly.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #58497

**Special notes for your reviewer**:

Should also cherry-pick to v1.9.

**Release note**:

```release-note
Get windows kernel version directly from registry
```

/cc @JiangtianLi @taylorb-microsoft

pkg/kubelet/winstats/version.go

@@ -69,20 +69,39 @@ func getVersionRevision() (uint16, error) {
 
 // getKernelVersion gets the version of windows kernel.
 func getKernelVersion() (string, error) {
-	ver, err := windows.GetVersion()
+	// Get CurrentBuildNumber.
+	buildNumber, err := getCurrentVersionVal("CurrentBuildNumber")
 	if err != nil {
 		return "", err
 	}
 
+	// Get CurrentMajorVersionNumber.
+	majorVersionNumberString, err := getCurrentVersionVal("CurrentMajorVersionNumber")
+	if err != nil {
+		return "", err
+	}
+	majorVersionNumber, err := windows.UTF16FromString(majorVersionNumberString)
+	if err != nil {
+		return "", err
+	}
+
+	// Get CurrentMinorVersionNumber.
+	minorVersionNumberString, err := getCurrentVersionVal("CurrentMinorVersionNumber")
+	if err != nil {
+		return "", err
+	}
+	minorVersionNumber, err := windows.UTF16FromString(minorVersionNumberString)
+	if err != nil {
+		return "", err
+	}
+
+	// Get UBR.
 	revision, err := getVersionRevision()
 	if err != nil {
 		return "", err
 	}
 
-	major := ver & 0xFF
-	minor := (ver >> 8) & 0xFF
-	build := (ver >> 16) & 0xFFFF
-	return fmt.Sprintf("%d.%d.%05d.%d\n", major, minor, build, revision), nil
+	return fmt.Sprintf("%d.%d.%s.%d\n", majorVersionNumber[0], minorVersionNumber[0], buildNumber, revision), nil
 }
 
 // getOSImageVersion gets the osImage name and version.