3 # Copyright (C) 2008-2011 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 of 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://www.dmo.ca/blog/20080530151107
29 # Do not allow unset variables, and set defaults.
37 echo "virt-what: $1" >&2
42 echo "virt-what [options]"
44 echo " --help Display this help"
45 echo " --version Display version and exit"
49 # Handle the command line arguments, if any.
51 TEMP=$(getopt -o v --long help --long version --long test-root: -n 'virt-what' -- "$@")
52 if [ $? != 0 ]; then exit 1; fi
59 # Deliberately undocumented: used for 'make check'.
63 -v|--version) echo $VERSION; exit 0 ;;
65 *) fail "internal error ($1)" ;;
69 # Add /sbin and /usr/sbin to the path so we can find system
70 # binaries like dmicode.
71 # Add /usr/libexec to the path so we can find the helper binary.
73 exec_prefix=@exec_prefix@
74 PATH=$root@libexecdir@:$root/sbin:$root/usr/sbin:$PATH
76 # Check we're running as root.
78 if [ "x$root" = "x" ] && [ "$EUID" -ne 0 ]; then
79 fail "this script must be run as root"
82 # Many fullvirt hypervisors give an indication through CPUID. Use the
83 # helper program to get this information.
85 cpuid=$(virt-what-cpuid-helper)
87 # Check for various products in the BIOS information.
88 # Note that dmidecode doesn't exist on non-PC architectures. On these,
89 # this will return an error which is ignored (error message redirected
90 # into $dmi variable).
92 dmi=$(LANG=C dmidecode 2>&1)
95 # Note for the purpose of testing, we only call uname with -p option.
100 # cpuid check added by Chetan Loke.
102 if [ "$cpuid" = "VMwareVMware" ]; then
104 elif echo "$dmi" | grep -q 'Manufacturer: VMware'; then
109 # http://blogs.msdn.com/b/sqlosteam/archive/2010/10/30/is-this-real-the-metaphysics-of-hardware-virtualization.aspx
110 if [ "$cpuid" = "Microsoft Hv" ]; then
114 # Check for VirtualPC.
115 # The negative check for cpuid is to distinguish this from Hyper-V
116 # which also has the same manufacturer string in the SM-BIOS data.
117 if [ "$cpuid" != "Microsoft Hv" ] &&
118 echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation'; then
122 # Check for VirtualBox.
123 # Added by Laurent Léonard.
124 if echo "$dmi" | grep -q 'Manufacturer: innotek GmbH'; then
128 # Check for OpenVZ / Virtuozzo.
129 # Added by Evgeniy Sokolov.
130 # /proc/vz - always exists if OpenVZ kernel is running (inside and outside
132 # /proc/bc - exists on node, but not inside container.
134 if [ -d $root/proc/vz -a ! -d $root/proc/bc ]; then
138 # Check for LXC containers
139 # http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface
140 # Added by Marc Fournier
142 if [ -e $root/proc/1/environ ] &&
143 cat $root/proc/1/environ | tr '\000' '\n' | grep -Eiq '^container='; then
147 # Check for Linux-VServer
148 if cat $root/proc/self/status | grep -q "VxID: [0-9]*"; then
153 # Added by Laurent Léonard.
154 if grep -q 'UML' $root/proc/cpuinfo; then
158 # Check for IBM PowerVM Lx86 Linux/x86 emulator.
159 if grep -q '^vendor_id.*PowerVM Lx86' $root/proc/cpuinfo; then
163 # Check for Hitachi Virtualization Manager (HVM) Virtage logical partitioning.
164 if echo "$dmi" | grep -q 'Manufacturer.*HITACHI' &&
165 echo "$dmi" | grep -q 'Product.* LPAR'; then
169 # Check for IBM SystemZ.
170 if grep -q '^vendor_id.*IBM/S390' $root/proc/cpuinfo; then
172 if [ -f $root/proc/sysinfo ]; then
173 if grep -q 'VM.*Control Program.*z/VM' $root/proc/sysinfo; then
175 elif grep -q '^LPAR' $root/proc/sysinfo; then
176 echo ibm_systemz-lpar
178 # This is unlikely to be correct.
179 echo ibm_systemz-direct
184 # Check for Parallels.
185 if echo "$dmi" | grep -q 'Vendor: Parallels'; then
192 if [ "$cpuid" = "XenVMMXenVMM" ]; then
193 echo xen; echo xen-hvm
195 elif [ -f $root/proc/xen/capabilities ]; then
197 if grep -q "control_d" $root/proc/xen/capabilities; then
203 elif [ -f $root/sys/hypervisor/type ] &&
204 grep -q "xen" $root/sys/hypervisor/type; then
205 # Ordinary kernel with pv_ops. There does not seem to be
206 # enough information at present to tell whether this is dom0
209 elif [ "$arch" = "ia64" ]; then
210 if [ -d $root/sys/bus/xen -a ! -d $root/sys/bus/xen-backend ]; then
211 # PV-on-HVM drivers installed in a Xen guest.
215 # There is no virt leaf on IA64 HVM. This is a last-ditch
216 # attempt to detect something is virtualized by using a
218 virt-what-ia64-xen-rdtsc-test > /dev/null 2>&1
221 1) # Could be some sort of virt, or could just be a bit slow.
227 # Check for QEMU/KVM.
229 # Parallels exports KVMKVMKVM leaf, so skip this test if we've already
230 # seen that it's Parallels. Xen uses QEMU as the device model, so
231 # skip this test if we know it is Xen.
233 if ! $skip_qemu_kvm; then
234 if [ "$cpuid" = "KVMKVMKVM" ]; then
237 # XXX This is known to fail for qemu with the explicit -cpu
238 # option, since /proc/cpuinfo will not contain the QEMU
239 # string. The long term fix for this would be to export
240 # another CPUID leaf for non-accelerated qemu.
241 if grep -q 'QEMU' $root/proc/cpuinfo; then