container: support hostprocess containers and expose kubernetes labels (#1911)

internal/osversion/osversion_windows.go

@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: Apache-2.0
+//
+// Copyright The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build windows
+
+package osversion
+
+import (
+	"fmt"
+	"sync"
+
+	"golang.org/x/sys/windows"
+)
+
+// OSVersion is a wrapper for Windows version information
+// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724439(v=vs.85).aspx
+type OSVersion struct {
+	Version      uint32
+	MajorVersion uint8
+	MinorVersion uint8
+	Build        uint16
+}
+
+//nolint:gochecknoglobals
+var osv = sync.OnceValue(func() OSVersion {
+	v := *windows.RtlGetVersion()
+
+	return OSVersion{
+		MajorVersion: uint8(v.MajorVersion),
+		MinorVersion: uint8(v.MinorVersion),
+		Build:        uint16(v.BuildNumber),
+		// Fill version value so that existing clients don't break
+		Version: v.BuildNumber<<16 | (v.MinorVersion << 8) | v.MajorVersion,
+	}
+})
+
+// Get gets the operating system version on Windows.
+// The calling application must be manifested to get the correct version information.
+func Get() OSVersion {
+	return osv()
+}
+
+// Build gets the build-number on Windows
+// The calling application must be manifested to get the correct version information.
+func Build() uint16 {
+	return Get().Build
+}
+
+// String returns the OSVersion formatted as a string. It implements the
+// [fmt.Stringer] interface.
+func (osv OSVersion) String() string {
+	return fmt.Sprintf("%d.%d.%d", osv.MajorVersion, osv.MinorVersion, osv.Build)
+}