| Current File : //sbin/virt-what |
#!/bin/sh -
# virt-what. Generated from virt-what.in by configure.
# Copyright (C) 2008-2022 Red Hat Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
# 'virt-what' tries to detect the type of virtualization being
# used (or none at all if we're running on bare-metal). It prints
# out one or more lines each being a 'fact' about the virtualization.
#
# Please see also the manual page virt-what(1).
# This script should be run as root.
#
# The following resources were useful in writing this script:
# . http://dmo.ca/blog/detecting-virtualization-on-linux/
# Do not allow unset variables, and set defaults.
set -u
root=''
skip_qemu_kvm=false
skip_lkvm=false
VERSION="1.25"
have_cpuinfo () {
test -e "${root}/proc/cpuinfo"
}
use_sysctl() {
# Lacking /proc, on some systems sysctl can be used instead.
OS=$(uname) || fail "failed to get operating system name"
[ "$OS" = "OpenBSD" ]
}
fail () {
echo "virt-what: $1" >&2
exit 1
}
usage () {
echo "virt-what [options]"
echo "Options:"
echo " --help Display this help"
echo " --version Display version and exit"
exit 0
}
# Handle the command line arguments, if any.
while test $# -gt 0; do
case "$1" in
--help) usage ;;
--test-root=*)
# Deliberately undocumented: used for 'make check'.
root=$(echo "$1" | sed 's/.*=//')
shift 1
test -z "$root" && fail "--test-root option requires a value"
;;
-v|--version) echo "$VERSION"; exit 0 ;;
--) shift; break ;;
*) fail "unrecognized option '$1'";;
esac
done
test $# -gt 0 && fail "extra operand '$1'"
# Add /sbin and /usr/sbin to the path so we can find system
# binaries like dmidecode.
# Add /usr/libexec to the path so we can find the helper binary.
prefix=/usr
exec_prefix=/usr
PATH="${root}/usr/libexec:${root}/sbin:${root}/usr/sbin:${PATH}"
export PATH
# Check we're running as root.
EFFUID=$(id -u) || fail "failed to get current user id"
if [ "x$root" = "x" ] && [ "$EFFUID" -ne 0 ]; then
fail "this script must be run as root"
fi
# Try to locate the CPU-ID helper program
CPUID_HELPER=$(which virt-what-cpuid-helper 2>/dev/null)
if [ -z "$CPUID_HELPER" ] ; then
fail "virt-what-cpuid-helper program not found in \$PATH"
fi
# Many fullvirt hypervisors give an indication through CPUID. Use the
# helper program to get this information.
cpuid=$(virt-what-cpuid-helper)
# Check for various products in the BIOS information.
# Note that dmidecode doesn't exist on all architectures. On the ones
# it does not, then this will return an error, which is ignored (error
# message redirected into the $dmi variable).
dmi=$(LANG=C dmidecode 2>&1)
# Architecture.
# Note for the purpose of testing, we only call uname with -m option.
arch=$(uname -m | sed -e 's/i.86/i386/' | sed -e 's/arm.*/arm/')
# Check for Alibaba Cloud
if echo "$dmi" | grep -q 'Manufacturer: Alibaba'; then
# Check for Alibaba Cloud ECS Bare Metal (EBM) Instance
if [ "x$root" = "x" ] && ( { echo -e "GET /latest/meta-datainstance/instance-type HTTP/1.0\r\nHost: 100.100.100.200\r\n\r" >&3; grep -sq 'ebm' <&3 ; } 3<> /dev/tcp/100.100.100.200/80 ) 2>/dev/null ; then
echo "alibaba_cloud-ebm"
else
echo "alibaba_cloud"
fi
fi
# Check for VMware.
# cpuid check added by Chetan Loke.
if [ "$cpuid" = "VMwareVMware" ]; then
echo vmware
elif echo "$dmi" | grep -q 'Manufacturer: VMware'; then
echo vmware
fi
# Check for Hyper-V.
# http://blogs.msdn.com/b/sqlosteam/archive/2010/10/30/is-this-real-the-metaphysics-of-hardware-virtualization.aspx
if [ "$cpuid" = "Microsoft Hv" ]; then
echo hyperv
fi
# Check for VirtualPC.
# The negative check for cpuid is to distinguish this from Hyper-V
# which also has the same manufacturer string in the SM-BIOS data.
if [ "$cpuid" != "Microsoft Hv" ] &&
echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation' &&
echo "$dmi" | grep -q 'Product Name: Virtual Machine'; then
echo virtualpc
fi
# Check for VirtualBox.
# Added by Laurent Léonard.
if echo "$dmi" | grep -q 'Manufacturer: innotek GmbH'; then
echo virtualbox
fi
# Check for bhyve.
if [ "$cpuid" = "bhyve bhyve " ]; then
echo bhyve
elif echo "$dmi" | grep -q "Vendor: BHYVE"; then
echo bhyve
fi
# Check for OpenVZ / Virtuozzo.
# Added by Evgeniy Sokolov.
# /proc/vz - always exists if OpenVZ kernel is running (inside and outside
# container)
# /proc/bc - exists on node, but not inside container.
if [ -d "${root}/proc/vz" -a ! -d "${root}/proc/bc" ]; then
echo openvz
fi
# Check for LXC containers
# http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface
# Added by Marc Fournier
if [ -e "${root}/proc/1/environ" ] &&
tr '\000' '\n' < "${root}/proc/1/environ" |
grep -Eiq '^container=lxc'; then
echo lxc
fi
# Check for Illumos LX
if [ -e "${root}/proc/1/environ" ] &&
tr '\0' '\n' < "${root}/proc/1/environ" | grep -q '^container=zone$' &&
[ -e "${root}/proc/version" ] &&
grep -q 'BrandZ virtual linux' < "${root}/proc/version"; then
echo illumos-lx
fi
# Check for Docker.
if [ -f "${root}/.dockerenv" ] || [ -f "${root}/.dockerinit" ] || \
grep -qF /docker/ "${root}/proc/self/cgroup" 2>/dev/null; then
echo docker
fi
# Check for OCI.
if [ -e "${root}/proc/1/environ" ] &&
cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container=oci'; then
echo oci
fi
# Check for CRI-O.
if [ -e "${root}/proc/1/environ" ] &&
cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container=crio'; then
echo crio
fi
# Check for Podman.
if [ -e "${root}/proc/1/environ" ] &&
cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container=podman'; then
echo podman
elif grep -qF /libpod- "${root}/proc/self/cgroup" 2>/dev/null; then
echo podman
fi
# Check for Linux-VServer
if test -e "${root}/proc/self/status" \
&& cat "${root}/proc/self/status" | grep -q "VxID: [0-9]*"; then
echo linux_vserver
if grep -q "VxID: 0$" "${root}/proc/self/status"; then
echo linux_vserver-host
else
echo linux_vserver-guest
fi
fi
# Check for UML.
# Added by Laurent Léonard.
if have_cpuinfo && grep -q 'UML' "${root}/proc/cpuinfo"; then
echo uml
fi
# Check for IBM PowerVM Lx86 Linux/x86 emulator.
if have_cpuinfo && grep -q '^vendor_id.*PowerVM Lx86' "${root}/proc/cpuinfo"
then
echo powervm_lx86
fi
# Check for Hitachi Virtualization Manager (HVM) Virtage logical partitioning.
if echo "$dmi" | grep -q 'Manufacturer.*HITACHI' &&
echo "$dmi" | grep -q 'Product.* LPAR'; then
echo virtage
fi
# Check for IBM SystemZ.
if have_cpuinfo && grep -q '^vendor_id.*IBM/S390' "${root}/proc/cpuinfo"; then
echo ibm_systemz
if [ -f "${root}/proc/sysinfo" ]; then
if grep -q 'VM.*Control Program.*KVM/Linux' "${root}/proc/sysinfo"; then
echo ibm_systemz-kvm
elif grep -q 'VM.*Control Program.*z/VM' "${root}/proc/sysinfo"; then
echo ibm_systemz-zvm
elif grep -q '^LPAR' "${root}/proc/sysinfo"; then
echo ibm_systemz-lpar
else
# This is unlikely to be correct.
echo ibm_systemz-direct
fi
fi
fi
# Check for Parallels.
if echo "$dmi" | grep -q 'Vendor: Parallels'; then
echo parallels
skip_qemu_kvm=true
fi
# Check for Nutanix AHV.
if echo "$dmi" | grep -q 'Manufacturer: Nutanix'; then
echo nutanix_ahv
fi
# Check for oVirt/RHEV.
if echo "$dmi" | grep -q 'Manufacturer: oVirt'; then
echo ovirt
fi
if echo "$dmi" | grep -q 'Product Name: RHEV Hypervisor'; then
echo rhev
fi
# Google Cloud
if echo "$dmi" | grep -q 'Product Name: Google Compute Engine'; then
echo google_cloud
fi
# Red Hat's hypervisor.
if echo "$dmi" | grep -q 'Manufacturer: Red Hat'; then
echo redhat
fi
# Check for Xen.
if [ "$cpuid" = "XenVMMXenVMM" ] &&
! echo "$dmi" | grep -q 'No SMBIOS nor DMI entry point found, sorry'; then
echo xen; echo xen-hvm
skip_qemu_kvm=true
elif [ -d "${root}/proc/xen" ]; then
echo xen
if grep -q "control_d" "${root}/proc/xen/capabilities" 2>/dev/null; then
echo xen-dom0
else
echo xen-domU
fi
skip_qemu_kvm=true
skip_lkvm=true
elif [ -f "${root}/sys/hypervisor/type" ] &&
grep -q "xen" "${root}/sys/hypervisor/type"; then
# Ordinary kernel with pv_ops. There does not seem to be
# enough information at present to tell whether this is dom0
# or domU. XXX
echo xen
elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
if [ -d "${root}/proc/device-tree/hypervisor" ] &&
grep -q "xen" "${root}/proc/device-tree/hypervisor/compatible"; then
echo xen
skip_qemu_kvm=true
skip_lkvm=true
elif [ -d "${root}/proc/device-tree/hypervisor" ] &&
grep -q "vmware" "${root}/proc/device-tree/hypervisor/compatible"; then
echo vmware
skip_lkvm=true
fi
elif [ "$arch" = "ia64" ]; then
if [ -d "${root}/sys/bus/xen" -a ! -d "${root}/sys/bus/xen-backend" ]; then
# PV-on-HVM drivers installed in a Xen guest.
echo xen
echo xen-hvm
else
# There is no virt leaf on IA64 HVM. This is a last-ditch
# attempt to detect something is virtualized by using a
# timing attack.
virt-what-ia64-xen-rdtsc-test > /dev/null 2>&1
case "$?" in
0) ;; # not virtual
1) # Could be some sort of virt, or could just be a bit slow.
echo virt
esac
fi
fi
# Check for QEMU/KVM.
#
# Parallels exports KVMKVMKVM leaf, so skip this test if we've already
# seen that it's Parallels. Xen uses QEMU as the device model, so
# skip this test if we know it is Xen.
if ! "$skip_qemu_kvm"; then
if [ "$cpuid" = "KVMKVMKVM" ]; then
echo kvm
elif [ "$cpuid" = "TCGTCGTCGTCG" ]; then
echo qemu
skip_lkvm=true
elif echo "$dmi" | grep -q 'Product Name: KVM'; then
echo kvm
skip_lkvm=true
elif echo "$dmi" | grep -q 'Manufacturer: KVM'; then
echo kvm
skip_lkvm=true
elif echo "$dmi" | grep -q 'Manufacturer: Amazon EC2' &&
echo "$dmi" | grep -q 'System is a virtual machine'; then
# This is for AWS Graviton (Arm) systems which don't have CPUID.
echo kvm
skip_lkvm=true
elif echo "$dmi" | grep -q 'Manufacturer: Alibaba Cloud' &&
echo "$dmi" | grep -q 'System is a virtual machine'; then
# This is for Alibaba Arm systems which don't have CPUID.
echo kvm
skip_lkvm=true
elif echo "$dmi" | grep -q 'Manufacturer: QEMU'; then
# The test for KVM above failed, so now we know we're
# not using KVM acceleration.
echo qemu
skip_lkvm=true
elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
if [ -d "${root}/proc/device-tree" ] &&
ls "${root}/proc/device-tree" | grep -q "fw-cfg"; then
# We don't have enough information to determine if we're
# using KVM acceleration or not.
echo qemu
skip_lkvm=true
fi
elif [ -d ${root}/proc/device-tree/hypervisor ] &&
grep -q "linux,kvm" /proc/device-tree/hypervisor/compatible; then
# We are running as a spapr KVM guest on ppc64
echo kvm
skip_lkvm=true
elif use_sysctl; then
# SmartOS KVM
product=$(sysctl -n hw.product)
if echo "$product" | grep -q 'SmartDC HVM'; then
echo kvm
fi
else
# This is known to fail for qemu with the explicit -cpu
# option, since /proc/cpuinfo will not contain the QEMU
# string. QEMU 2.10 added a new CPUID leaf, so this
# problem only triggered for older QEMU
if have_cpuinfo && grep -q 'QEMU' "${root}/proc/cpuinfo"; then
echo qemu
fi
fi
fi
if ! "$skip_lkvm"; then
if [ "$cpuid" = "LKVMLKVMLKVM" ]; then
echo lkvm
elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
if [ -d "${root}/proc/device-tree" ] &&
grep -q "dummy-virt" "${root}/proc/device-tree/compatible"; then
echo lkvm
fi
fi
fi
# Check ppc64 lpar, kvm or powerkvm
# example /proc/cpuinfo line indicating 'not baremetal'
# platform : pSeries
#
# example /proc/ppc64/lparcfg systemtype line
# system_type=IBM pSeries (emulated by qemu)
if [ "$arch" = "ppc64" ] || [ "$arch" = "ppc64le" ] ; then
if have_cpuinfo && grep -q 'platform.**pSeries' "${root}/proc/cpuinfo"; then
if grep -q 'model.*emulated by qemu' "${root}/proc/cpuinfo"; then
echo ibm_power-kvm
else
# Assume LPAR, now detect shared or dedicated
if grep -q 'shared_processor_mode=1' "${root}/proc/ppc64/lparcfg"; then
echo ibm_power-lpar_shared
else
echo ibm_power-lpar_dedicated
fi
# detect powerkvm?
fi
fi
fi
# Check for OpenBSD/VMM
if [ "$cpuid" = "OpenBSDVMM58" ]; then
echo vmm
fi
# Check for LDoms
if [ "${arch#sparc}" != "$arch" ] && [ -e "${root}/dev/mdesc" ]; then
echo ldoms
if [ -d "${root}/sys/class/vlds/ctrl" ] && \
[ -d "${root}/sys/class/vlds/sp" ]; then
echo ldoms-control
else
echo ldoms-guest
fi
MDPROP="${root}/usr/lib/ldoms/mdprop.py"
if [ -x "${MDPROP}" ]; then
if [ -n "$($MDPROP -v iodevice device-type=pciex)" ]; then
echo ldoms-root
echo ldoms-io
elif [ -n "$($MDPROP -v iov-device vf-id=0)" ]; then
echo ldoms-io
fi
fi
fi
# Check for AWS.
# AWS on Xen.
if echo "$dmi" | grep -Eq 'Version: [0-9]+\.[0-9]+\.amazon'; then
echo aws
# AWS on baremetal or KVM.
elif echo "$dmi" | grep -q 'Vendor: Amazon EC2'; then
echo aws
fi