3 # Copyright (C) 2008-2019 Red Hat Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 # 'virt-what' tries to detect the type of virtualization being
20 # used (or none at all if we're running on bare-metal). It prints
21 # out one or more lines each being a 'fact' about the virtualization.
23 # Please see also the manual page virt-what(1).
24 # This script should be run as root.
26 # The following resources were useful in writing this script:
27 # . http://dmo.ca/blog/detecting-virtualization-on-linux/
29 # Do not allow unset variables, and set defaults.
38 test -e "${root}/proc/cpuinfo"
42 # Lacking /proc, on some systems sysctl can be used instead.
43 OS=$(uname) || fail "failed to get operating system name"
49 echo "virt-what: $1" >&2
54 echo "virt-what [options]"
56 echo " --help Display this help"
57 echo " --version Display version and exit"
61 # Handle the command line arguments, if any.
62 while test $# -gt 0; do
66 # Deliberately undocumented: used for 'make check'.
67 root=$(echo "$1" | sed 's/.*=//')
69 test -z "$root" && fail "--test-root option requires a value"
71 -v|--version) echo "$VERSION"; exit 0 ;;
73 *) fail "unrecognized option '$1'";;
76 test $# -gt 0 && fail "extra operand '$1'"
78 # Add /sbin and /usr/sbin to the path so we can find system
79 # binaries like dmidecode.
80 # Add /usr/libexec to the path so we can find the helper binary.
82 exec_prefix=@exec_prefix@
83 PATH="${root}@libexecdir@:${root}/sbin:${root}/usr/sbin:${PATH}"
86 # Check we're running as root.
87 EFFUID=$(id -u) || fail "failed to get current user id"
89 if [ "x$root" = "x" ] && [ "$EFFUID" -ne 0 ]; then
90 fail "this script must be run as root"
93 # Try to locate the CPU-ID helper program
94 CPUID_HELPER=$(which virt-what-cpuid-helper 2>/dev/null)
95 if [ -z "$CPUID_HELPER" ] ; then
96 fail "virt-what-cpuid-helper program not found in \$PATH"
99 # Many fullvirt hypervisors give an indication through CPUID. Use the
100 # helper program to get this information.
102 cpuid=$(virt-what-cpuid-helper)
104 # Check for various products in the BIOS information.
105 # Note that dmidecode doesn't exist on all architectures. On the ones
106 # it does not, then this will return an error, which is ignored (error
107 # message redirected into the $dmi variable).
109 dmi=$(LANG=C dmidecode 2>&1)
112 # Note for the purpose of testing, we only call uname with -m option.
114 arch=$(uname -m | sed -e 's/i.86/i386/' | sed -e 's/arm.*/arm/')
117 # cpuid check added by Chetan Loke.
119 if [ "$cpuid" = "VMwareVMware" ]; then
121 elif echo "$dmi" | grep -q 'Manufacturer: VMware'; then
126 # http://blogs.msdn.com/b/sqlosteam/archive/2010/10/30/is-this-real-the-metaphysics-of-hardware-virtualization.aspx
127 if [ "$cpuid" = "Microsoft Hv" ]; then
131 # Check for VirtualPC.
132 # The negative check for cpuid is to distinguish this from Hyper-V
133 # which also has the same manufacturer string in the SM-BIOS data.
134 if [ "$cpuid" != "Microsoft Hv" ] &&
135 echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation'; then
139 # Check for VirtualBox.
140 # Added by Laurent Léonard.
141 if echo "$dmi" | grep -q 'Manufacturer: innotek GmbH'; then
146 if [ "$cpuid" = "bhyve bhyve " ]; then
148 elif echo "$dmi" | grep -q "Vendor: BHYVE"; then
152 # Check for OpenVZ / Virtuozzo.
153 # Added by Evgeniy Sokolov.
154 # /proc/vz - always exists if OpenVZ kernel is running (inside and outside
156 # /proc/bc - exists on node, but not inside container.
158 if [ -d "${root}/proc/vz" -a ! -d "${root}/proc/bc" ]; then
162 # Check for LXC containers
163 # http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface
164 # Added by Marc Fournier
166 if [ -e "${root}/proc/1/environ" ] &&
167 cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container='; then
171 # Check for Linux-VServer
172 if test -e "${root}/proc/self/status" \
173 && cat "${root}/proc/self/status" | grep -q "VxID: [0-9]*"; then
175 if grep -q "VxID: 0$" "${root}/proc/self/status"; then
176 echo linux_vserver-host
178 echo linux_vserver-guest
183 # Added by Laurent Léonard.
184 if have_cpuinfo && grep -q 'UML' "${root}/proc/cpuinfo"; then
188 # Check for IBM PowerVM Lx86 Linux/x86 emulator.
189 if have_cpuinfo && grep -q '^vendor_id.*PowerVM Lx86' "${root}/proc/cpuinfo"
194 # Check for Hitachi Virtualization Manager (HVM) Virtage logical partitioning.
195 if echo "$dmi" | grep -q 'Manufacturer.*HITACHI' &&
196 echo "$dmi" | grep -q 'Product.* LPAR'; then
200 # Check for IBM SystemZ.
201 if have_cpuinfo && grep -q '^vendor_id.*IBM/S390' "${root}/proc/cpuinfo"; then
203 if [ -f "${root}/proc/sysinfo" ]; then
204 if grep -q 'VM.*Control Program.*KVM/Linux' "${root}/proc/sysinfo"; then
206 elif grep -q 'VM.*Control Program.*z/VM' "${root}/proc/sysinfo"; then
208 elif grep -q '^LPAR' "${root}/proc/sysinfo"; then
209 echo ibm_systemz-lpar
211 # This is unlikely to be correct.
212 echo ibm_systemz-direct
217 # Check for Parallels.
218 if echo "$dmi" | grep -q 'Vendor: Parallels'; then
223 # Check for Nutanix AHV.
224 # This is sufficiently different from KVM and has Viridian extensions,
225 # so skip the KVM test.
226 if echo "$dmi" | grep -q 'Manufacturer: Nutanix'; then
231 # Check for oVirt/RHEV.
232 if echo "$dmi" | grep -q 'Manufacturer: oVirt'; then
235 if echo "$dmi" | grep -q 'Product Name: RHEV Hypervisor'; then
241 if [ "$cpuid" = "XenVMMXenVMM" ] &&
242 ! echo "$dmi" | grep -q 'No SMBIOS nor DMI entry point found, sorry'; then
243 echo xen; echo xen-hvm
245 elif [ -d "${root}/proc/xen" ]; then
247 if grep -q "control_d" "${root}/proc/xen/capabilities" 2>/dev/null; then
254 elif [ -f "${root}/sys/hypervisor/type" ] &&
255 grep -q "xen" "${root}/sys/hypervisor/type"; then
256 # Ordinary kernel with pv_ops. There does not seem to be
257 # enough information at present to tell whether this is dom0
260 elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
261 if [ -d "${root}/proc/device-tree/hypervisor" ] &&
262 grep -q "xen" "${root}/proc/device-tree/hypervisor/compatible"; then
267 elif [ "$arch" = "ia64" ]; then
268 if [ -d "${root}/sys/bus/xen" -a ! -d "${root}/sys/bus/xen-backend" ]; then
269 # PV-on-HVM drivers installed in a Xen guest.
273 # There is no virt leaf on IA64 HVM. This is a last-ditch
274 # attempt to detect something is virtualized by using a
276 virt-what-ia64-xen-rdtsc-test > /dev/null 2>&1
279 1) # Could be some sort of virt, or could just be a bit slow.
285 # Check for QEMU/KVM.
287 # Parallels exports KVMKVMKVM leaf, so skip this test if we've already
288 # seen that it's Parallels. Xen uses QEMU as the device model, so
289 # skip this test if we know it is Xen.
291 if ! "$skip_qemu_kvm"; then
292 if [ "$cpuid" = "KVMKVMKVM" ]; then
294 elif [ "$cpuid" = "TCGTCGTCGTCG" ]; then
297 elif echo "$dmi" | grep -q 'Product Name: KVM'; then
300 elif echo "$dmi" | grep -q 'Manufacturer: QEMU'; then
301 # The test for KVM above failed, so now we know we're
302 # not using KVM acceleration.
305 elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
306 if [ -d "${root}/proc/device-tree" ] &&
307 ls "${root}/proc/device-tree" | grep -q "fw-cfg"; then
308 # We don't have enough information to determine if we're
309 # using KVM acceleration or not.
313 elif [ -d ${root}/proc/device-tree/hypervisor ] &&
314 grep -q "linux,kvm" /proc/device-tree/hypervisor/compatible; then
315 # We are running as a spapr KVM guest on ppc64
318 elif use_sysctl; then
320 product=$(sysctl -n hw.product)
321 if echo "$product" | grep -q 'SmartDC HVM'; then
325 # This is known to fail for qemu with the explicit -cpu
326 # option, since /proc/cpuinfo will not contain the QEMU
327 # string. QEMU 2.10 added a new CPUID leaf, so this
328 # problem only triggered for older QEMU
329 if have_cpuinfo && grep -q 'QEMU' "${root}/proc/cpuinfo"; then
335 if ! "$skip_lkvm"; then
336 if [ "$cpuid" = "LKVMLKVMLKVM" ]; then
338 elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
339 if [ -d "${root}/proc/device-tree" ] &&
340 grep -q "dummy-virt" "${root}/proc/device-tree/compatible"; then
347 if [ -f "${root}/.dockerinit" ]; then
351 # Check ppc64 lpar, kvm or powerkvm
353 # example /proc/cpuinfo line indicating 'not baremetal'
356 # example /proc/ppc64/lparcfg systemtype line
357 # system_type=IBM pSeries (emulated by qemu)
359 if [ "$arch" = "ppc64" ] || [ "$arch" = "ppc64le" ] ; then
360 if have_cpuinfo && grep -q 'platform.**pSeries' "${root}/proc/cpuinfo"; then
361 if grep -q 'model.*emulated by qemu' "${root}/proc/cpuinfo"; then
364 # Assume LPAR, now detect shared or dedicated
365 if grep -q 'shared_processor_mode=1' "${root}/proc/ppc64/lparcfg"; then
366 echo ibm_power-lpar_shared
368 echo ibm_power-lpar_dedicated
375 # Check for OpenBSD/VMM
376 if [ "$cpuid" = "OpenBSDVMM58" ]; then
381 if [ "${arch#sparc}" != "$arch" ] && [ -e "${root}/dev/mdesc" ]; then
383 if [ -d "${root}/sys/class/vlds/ctrl" ] && \
384 [ -d "${root}/sys/class/vlds/sp" ]; then
389 MDPROP="${root}/usr/lib/ldoms/mdprop.py"
390 if [ -x "${MDPROP}" ]; then
391 if [ -n "$($MDPROP -v iodevice device-type=pciex)" ]; then
394 elif [ -n "$($MDPROP -v iov-device vf-id=0)" ]; then
402 if echo "$dmi" | grep -q 'Version: [0-9]\.[0-9]\.amazon'; then
404 # AWS on baremetal or KVM.
405 elif echo "$dmi" | grep -q 'Vendor: Amazon EC2'; then