66 lines
1.5 KiB
Go
66 lines
1.5 KiB
Go
// Copyright © 2016 Zlatko Čalušić
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//
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// Use of this source code is governed by an MIT-style license that can be found in the LICENSE file.
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package sysinfo
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import (
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"strings"
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"unsafe"
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"github.com/zcalusic/sysinfo/cpuid"
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)
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// https://en.wikipedia.org/wiki/CPUID#EAX.3D0:_Get_vendor_ID
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var hvmap = map[string]string{
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"bhyve bhyve ": "bhyve",
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"KVMKVMKVM": "kvm",
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"Microsoft Hv": "hyperv",
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" lrpepyh vr": "parallels",
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"VMwareVMware": "vmware",
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"XenVMMXenVMM": "xenhvm",
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}
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func isHypervisorActive() bool {
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var info [4]uint32
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cpuid.CPUID(&info, 0x1)
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return info[2]&(1<<31) != 0
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}
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func getHypervisorCpuid(ax uint32) string {
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var info [4]uint32
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cpuid.CPUID(&info, ax)
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return hvmap[strings.TrimRight(string((*[12]byte)(unsafe.Pointer(&info[1]))[:]), "\000")]
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}
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func (si *SysInfo) getHypervisor() {
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if !isHypervisorActive() {
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if hypervisorType := slurpFile("/sys/hypervisor/type"); hypervisorType != "" {
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if hypervisorType == "xen" {
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si.Node.Hypervisor = "xenpv"
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}
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}
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return
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}
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// KVM has been caught to move its real signature to this leaf, and put something completely different in the
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// standard location. So this leaf must be checked first.
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if hv := getHypervisorCpuid(0x40000100); hv != "" {
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si.Node.Hypervisor = hv
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return
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}
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if hv := getHypervisorCpuid(0x40000000); hv != "" {
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si.Node.Hypervisor = hv
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return
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}
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// getBIOSInfo() must have run first, to detect BIOS vendor
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if si.BIOS.Vendor == "Bochs" {
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si.Node.Hypervisor = "bochs"
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return
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}
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si.Node.Hypervisor = "unknown"
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}
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