#!/usr/bin/sh - # virt-what. Generated from virt-what.in by configure. # Copyright (C) 2008-2024 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="1.27" 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 if $(timeout --version >/dev/null 2>&1); then timeout_cmd_prefix="timeout 1s" timeout_cmp="-eq" timeout_return_value=124 else timeout_cmd_prefix="" timeout_cmp="-ne" timeout_return_value=0 fi # Check for Alibaba Cloud ECS Bare Metal (EBM) Instance metadata=$($timeout_cmd_prefix sh -c '( { echo -e "GET /latest/meta-datainstance/instance-type HTTP/1.0\r\nHost: 100.100.100.200\r\n\r" >&3; grep -s 'ebm' <&3 ; } 3<> /dev/tcp/100.100.100.200/80 ) 2>/dev/null') ret_value=$? if [ $ret_value $timeout_cmp $timeout_return_value ]; then # a timeout occurred when fetching metadata, assuming remote host unaccessible # which means it might be a non-cloud environment, or test environment. echo "alibaba_cloud" else if [ -z "$metadata" ] ; then echo "alibaba_cloud" else echo "alibaba_cloud-ebm" fi 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 [ "$cpuid" = "Microsoft Hv" ]; then echo hyperv # Hyper-V on ARM doesn't have CPUID. Use the information in dmidecode # instead. Note this is similar to VirtualPC below. elif echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation' && echo "$dmi" | grep -q 'Product Name: Virtual Machine' && echo "$dmi" | grep -q 'Version: Hyper-V'; then echo hyperv fi # Check for VirtualPC. # The negative check for cpuid & Hyper-V is to distinguish this from # Hyper-V above which also has the same manufacturer string in the # SM-BIOS data. if [ "$cpuid" != "Microsoft Hv" ] && echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation' && echo "$dmi" | grep -q 'Product Name: Virtual Machine' && ! echo "$dmi" | grep -q 'Version: Hyper-V'; 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 "$dmi" | grep -q 'Manufacturer: Nutanix' && echo "$dmi" | grep -q 'Product Name: AHV'; 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 "$dmi" | grep -q 'Vendor: Amazon EC2'; then echo aws fi # UpCloud if echo "$dmi" | grep -q 'Manufacturer: UpCloud'; then echo upcloud fi