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

internal/headers/kernel32/job.go

@@ -0,0 +1,53 @@
+// 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 kernel32
+
+import (
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+const (
+	// JobObjectQuery is required to retrieve certain information about a job object,
+	// such as attributes and accounting information (see QueryInformationJobObject and IsProcessInJob).
+	// https://learn.microsoft.com/en-us/windows/win32/procthread/job-object-security-and-access-rights
+	JobObjectQuery = 0x0004
+)
+
+func OpenJobObject(name string) (windows.Handle, error) {
+	handle, _, err := procOpenJobObject.Call(JobObjectQuery, 0, uintptr(unsafe.Pointer(&name)))
+	if handle == 0 {
+		return 0, err
+	}
+
+	return windows.Handle(handle), nil
+}
+
+func IsProcessInJob(process windows.Handle, job windows.Handle, result *bool) error {
+	ret, _, err := procIsProcessInJob.Call(
+		uintptr(process),
+		uintptr(job),
+		uintptr(unsafe.Pointer(&result)),
+	)
+	if ret == 0 {
+		return err
+	}
+
+	return nil
+}