3 # Copyright (C) 2008-2017 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 echo "virt-what: $1" >&2
47 echo "virt-what [options]"
49 echo " --help Display this help"
50 echo " --version Display version and exit"
54 # Handle the command line arguments, if any.
55 while test $# -gt 0; do
59 # Deliberately undocumented: used for 'make check'.
60 root=$(echo "$1" | sed 's/.*=//')
62 test -z "$root" && fail "--test-root option requires a value"
64 -v|--version) echo "$VERSION"; exit 0 ;;
66 *) fail "unrecognized option '$1'";;
69 test $# -gt 0 && fail "extra operand '$1'"
71 # Add /sbin and /usr/sbin to the path so we can find system
72 # binaries like dmidecode.
73 # Add /usr/libexec to the path so we can find the helper binary.
75 exec_prefix=@exec_prefix@
76 PATH="${root}@libexecdir@:${root}/sbin:${root}/usr/sbin:${PATH}"
79 # Check we're running as root.
80 EFFUID=$(id -u) || fail "failed to get current user id"
82 if [ "x$root" = "x" ] && [ "$EFFUID" -ne 0 ]; then
83 fail "this script must be run as root"
86 # Try to locate the CPU-ID helper program
87 CPUID_HELPER=$(which virt-what-cpuid-helper 2>/dev/null)
88 if [ -z "$CPUID_HELPER" ] ; then
89 fail "virt-what-cpuid-helper program not found in \$PATH"
92 # Many fullvirt hypervisors give an indication through CPUID. Use the
93 # helper program to get this information.
95 cpuid=$(virt-what-cpuid-helper)
97 # Check for various products in the BIOS information.
98 # Note that dmidecode doesn't exist on all architectures. On the ones
99 # it does not, then this will return an error, which is ignored (error
100 # message redirected into the $dmi variable).
102 dmi=$(LANG=C dmidecode 2>&1)
105 # Note for the purpose of testing, we only call uname with -m option.
107 arch=$(uname -m | sed -e 's/i.86/i386/' | sed -e 's/arm.*/arm/')
110 # cpuid check added by Chetan Loke.
112 if [ "$cpuid" = "VMwareVMware" ]; then
114 elif echo "$dmi" | grep -q 'Manufacturer: VMware'; then
119 # http://blogs.msdn.com/b/sqlosteam/archive/2010/10/30/is-this-real-the-metaphysics-of-hardware-virtualization.aspx
120 if [ "$cpuid" = "Microsoft Hv" ]; then
124 # Check for VirtualPC.
125 # The negative check for cpuid is to distinguish this from Hyper-V
126 # which also has the same manufacturer string in the SM-BIOS data.
127 if [ "$cpuid" != "Microsoft Hv" ] &&
128 echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation'; then
132 # Check for VirtualBox.
133 # Added by Laurent Léonard.
134 if echo "$dmi" | grep -q 'Manufacturer: innotek GmbH'; then
139 if [ "$cpuid" = "bhyve bhyve " ]; then
141 elif echo "$dmi" | grep -q "Vendor: BHYVE"; then
145 # Check for OpenVZ / Virtuozzo.
146 # Added by Evgeniy Sokolov.
147 # /proc/vz - always exists if OpenVZ kernel is running (inside and outside
149 # /proc/bc - exists on node, but not inside container.
151 if [ -d "${root}/proc/vz" -a ! -d "${root}/proc/bc" ]; then
155 # Check for LXC containers
156 # http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface
157 # Added by Marc Fournier
159 if [ -e "${root}/proc/1/environ" ] &&
160 cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container='; then
164 # Check for Linux-VServer
165 if test -e "${root}/proc/self/status" \
166 && cat "${root}/proc/self/status" | grep -q "VxID: [0-9]*"; then
168 if grep -q "VxID: 0$" "${root}/proc/self/status"; then
169 echo linux_vserver-host
171 echo linux_vserver-guest
176 # Added by Laurent Léonard.
177 if have_cpuinfo && grep -q 'UML' "${root}/proc/cpuinfo"; then
181 # Check for IBM PowerVM Lx86 Linux/x86 emulator.
182 if have_cpuinfo && grep -q '^vendor_id.*PowerVM Lx86' "${root}/proc/cpuinfo"
187 # Check for Hitachi Virtualization Manager (HVM) Virtage logical partitioning.
188 if echo "$dmi" | grep -q 'Manufacturer.*HITACHI' &&
189 echo "$dmi" | grep -q 'Product.* LPAR'; then
193 # Check for IBM SystemZ.
194 if have_cpuinfo && grep -q '^vendor_id.*IBM/S390' "${root}/proc/cpuinfo"; then
196 if [ -f "${root}/proc/sysinfo" ]; then
197 if grep -q 'VM.*Control Program.*KVM/Linux' "${root}/proc/sysinfo"; then
199 elif grep -q 'VM.*Control Program.*z/VM' "${root}/proc/sysinfo"; then
201 elif grep -q '^LPAR' "${root}/proc/sysinfo"; then
202 echo ibm_systemz-lpar
204 # This is unlikely to be correct.
205 echo ibm_systemz-direct
210 # Check for Parallels.
211 if echo "$dmi" | grep -q 'Vendor: Parallels'; then
216 # Check for oVirt/RHEV.
217 if echo "$dmi" | grep -q 'Manufacturer: oVirt'; then
220 if echo "$dmi" | grep -q 'Product Name: RHEV Hypervisor'; then
226 if [ "$cpuid" = "XenVMMXenVMM" ] &&
227 ! echo "$dmi" | grep -q 'No SMBIOS nor DMI entry point found, sorry'; then
228 echo xen; echo xen-hvm
230 if echo "$dmi" | grep -q 'Version: [0-9]\.[0-9]\.amazon'; then
234 elif [ -d "${root}/proc/xen" ]; then
236 if grep -q "control_d" "${root}/proc/xen/capabilities" 2>/dev/null; then
243 elif [ -f "${root}/sys/hypervisor/type" ] &&
244 grep -q "xen" "${root}/sys/hypervisor/type"; then
245 # Ordinary kernel with pv_ops. There does not seem to be
246 # enough information at present to tell whether this is dom0
249 elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
250 if [ -d "${root}/proc/device-tree/hypervisor" ] &&
251 grep -q "xen" "${root}/proc/device-tree/hypervisor/compatible"; then
256 elif [ "$arch" = "ia64" ]; then
257 if [ -d "${root}/sys/bus/xen" -a ! -d "${root}/sys/bus/xen-backend" ]; then
258 # PV-on-HVM drivers installed in a Xen guest.
262 # There is no virt leaf on IA64 HVM. This is a last-ditch
263 # attempt to detect something is virtualized by using a
265 virt-what-ia64-xen-rdtsc-test > /dev/null 2>&1
268 1) # Could be some sort of virt, or could just be a bit slow.
274 # Check for QEMU/KVM.
276 # Parallels exports KVMKVMKVM leaf, so skip this test if we've already
277 # seen that it's Parallels. Xen uses QEMU as the device model, so
278 # skip this test if we know it is Xen.
280 if ! "$skip_qemu_kvm"; then
281 if [ "$cpuid" = "KVMKVMKVM" ]; then
283 elif [ "$cpuid" = "TCGTCGTCGTCG" ]; then
286 elif echo "$dmi" | grep -q 'Product Name: KVM'; then
289 elif echo "$dmi" | grep -q 'Manufacturer: QEMU'; then
290 # The test for KVM above failed, so now we know we're
291 # not using KVM acceleration.
294 elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
295 if [ -d "${root}/proc/device-tree" ] &&
296 ls "${root}/proc/device-tree" | grep -q "fw-cfg"; then
297 # We don't have enough information to determine if we're
298 # using KVM acceleration or not.
302 elif [ -d ${root}/proc/device-tree/hypervisor ] &&
303 grep -q "linux,kvm" /proc/device-tree/hypervisor/compatible; then
304 # We are running as a spapr KVM guest on ppc64
308 # This is known to fail for qemu with the explicit -cpu
309 # option, since /proc/cpuinfo will not contain the QEMU
310 # string. QEMU 2.10 added a new CPUID leaf, so this
311 # problem only triggered for older QEMU
312 if have_cpuinfo && grep -q 'QEMU' "${root}/proc/cpuinfo"; then
318 if ! "$skip_lkvm"; then
319 if [ "$cpuid" = "LKVMLKVMLKVM" ]; then
321 elif [ "$arch" = "arm" ] || [ "$arch" = "aarch64" ]; then
322 if [ -d "${root}/proc/device-tree" ] &&
323 grep -q "dummy-virt" "${root}/proc/device-tree/compatible"; then
330 if [ -f "${root}/.dockerinit" ]; then
334 # Check ppc64 lpar, kvm or powerkvm
336 # example /proc/cpuinfo line indicating 'not baremetal'
339 # example /proc/ppc64/lparcfg systemtype line
340 # system_type=IBM pSeries (emulated by qemu)
342 if [ "$arch" = "ppc64" ] || [ "$arch" = "ppc64le" ] ; then
343 if have_cpuinfo && grep -q 'platform.**pSeries' "${root}/proc/cpuinfo"; then
344 if grep -q 'model.*emulated by qemu' "${root}/proc/cpuinfo"; then
347 # Assume LPAR, now detect shared or dedicated
348 if grep -q 'shared_processor_mode=1' "${root}/proc/ppc64/lparcfg"; then
349 echo ibm_power-lpar_shared
351 echo ibm_power-lpar_dedicated
358 # Check for OpenBSD/VMM
359 if [ "$cpuid" = "OpenBSDVMM58" ]; then
364 if [ "${arch#sparc}" != "$arch" ] && [ -e "${root}/dev/mdesc" ]; then
366 if [ -d "${root}/sys/class/vlds/ctrl" ] && \
367 [ -d "${root}/sys/class/vlds/sp" ]; then
372 MDPROP="${root}/usr/lib/ldoms/mdprop.py"
373 if [ -x "${MDPROP}" ]; then
374 if [ -n "$($MDPROP -v iodevice device-type=pciex)" ]; then
377 elif [ -n "$($MDPROP -v iov-device vf-id=0)" ]; then