mirror of https://github.com/k3s-io/k3s
116 lines
2.8 KiB
Go
116 lines
2.8 KiB
Go
// +build windows
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/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package winstats
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import (
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"fmt"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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// getCurrentVersionVal gets value of specified key from registry.
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func getCurrentVersionVal(key string) (string, error) {
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var h windows.Handle
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if err := windows.RegOpenKeyEx(windows.HKEY_LOCAL_MACHINE,
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windows.StringToUTF16Ptr(`SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\`),
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0,
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windows.KEY_READ,
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&h); err != nil {
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return "", err
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}
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defer windows.RegCloseKey(h)
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var buf [128]uint16
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var typ uint32
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n := uint32(len(buf) * int(unsafe.Sizeof(buf[0]))) // api expects array of bytes, not uint16
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if err := windows.RegQueryValueEx(h,
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windows.StringToUTF16Ptr(key),
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nil,
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&typ,
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(*byte)(unsafe.Pointer(&buf[0])),
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&n); err != nil {
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return "", err
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}
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return windows.UTF16ToString(buf[:]), nil
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}
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// getVersionRevision gets revision from UBR registry.
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func getVersionRevision() (uint16, error) {
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revisionString, err := getCurrentVersionVal("UBR")
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if err != nil {
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return 0, err
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}
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revision, err := windows.UTF16FromString(revisionString)
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if err != nil {
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return 0, err
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}
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return revision[0], nil
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}
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// getKernelVersion gets the version of windows kernel.
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func getKernelVersion() (string, error) {
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// Get CurrentBuildNumber.
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buildNumber, err := getCurrentVersionVal("CurrentBuildNumber")
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if err != nil {
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return "", err
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}
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// Get CurrentMajorVersionNumber.
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majorVersionNumberString, err := getCurrentVersionVal("CurrentMajorVersionNumber")
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if err != nil {
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return "", err
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}
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majorVersionNumber, err := windows.UTF16FromString(majorVersionNumberString)
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if err != nil {
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return "", err
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}
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// Get CurrentMinorVersionNumber.
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minorVersionNumberString, err := getCurrentVersionVal("CurrentMinorVersionNumber")
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if err != nil {
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return "", err
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}
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minorVersionNumber, err := windows.UTF16FromString(minorVersionNumberString)
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if err != nil {
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return "", err
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}
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// Get UBR.
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revision, err := getVersionRevision()
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if err != nil {
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return "", err
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}
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return fmt.Sprintf("%d.%d.%s.%d", majorVersionNumber[0], minorVersionNumber[0], buildNumber, revision), nil
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}
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// getOSImageVersion gets the osImage name and version.
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func getOSImageVersion() (string, error) {
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productName, err := getCurrentVersionVal("ProductName")
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if err != nil {
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return "", nil
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}
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return productName, nil
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}
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