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 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.
37 test -e "${root}/proc/cpuinfo"
41 echo "virt-what: $1" >&2
46 echo "virt-what [options]"
48 echo " --help Display this help"
49 echo " --version Display version and exit"
53 # Handle the command line arguments, if any.
55 TEMP=$(getopt -o v --long help --long version --long test-root: -n 'virt-what' -- "$@")
56 if [ $? != 0 ]; then exit 1; fi
63 # Deliberately undocumented: used for 'make check'.
67 -v|--version) echo "$VERSION"; exit 0 ;;
69 *) fail "internal error ($1)" ;;
73 # Add /sbin and /usr/sbin to the path so we can find system
74 # binaries like dmidecode.
75 # Add /usr/libexec to the path so we can find the helper binary.
77 exec_prefix=@exec_prefix@
78 PATH="${root}@libexecdir@:${root}/sbin:${root}/usr/sbin:${PATH}"
80 # Check we're running as root.
81 EFFUID=$(id -u) || fail "failed to get current user id"
83 if [ "x$root" = "x" ] && [ "$EFFUID" -ne 0 ]; then
84 fail "this script must be run as root"
87 # Try to locate the CPU-ID helper program
88 CPUID_HELPER=$(which virt-what-cpuid-helper 2>/dev/null)
89 if [ -z "$CPUID_HELPER" ] ; then
90 fail "virt-what-cpuid-helper program not found in \$PATH"
93 # Many fullvirt hypervisors give an indication through CPUID. Use the
94 # helper program to get this information.
96 cpuid=$(virt-what-cpuid-helper)
98 # Check for various products in the BIOS information.
99 # Note that dmidecode doesn't exist on non-PC architectures. On these,
100 # this will return an error which is ignored (error message redirected
101 # into $dmi variable).
103 dmi=$(LANG=C dmidecode 2>&1)
106 # Note for the purpose of testing, we only call uname with -p option.
111 # cpuid check added by Chetan Loke.
113 if [ "$cpuid" = "VMwareVMware" ]; then
115 elif echo "$dmi" | grep -q 'Manufacturer: VMware'; then
120 # http://blogs.msdn.com/b/sqlosteam/archive/2010/10/30/is-this-real-the-metaphysics-of-hardware-virtualization.aspx
121 if [ "$cpuid" = "Microsoft Hv" ]; then
125 # Check for VirtualPC.
126 # The negative check for cpuid is to distinguish this from Hyper-V
127 # which also has the same manufacturer string in the SM-BIOS data.
128 if [ "$cpuid" != "Microsoft Hv" ] &&
129 echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation'; then
133 # Check for VirtualBox.
134 # Added by Laurent Léonard.
135 if echo "$dmi" | grep -q 'Manufacturer: innotek GmbH'; then
139 # Check for OpenVZ / Virtuozzo.
140 # Added by Evgeniy Sokolov.
141 # /proc/vz - always exists if OpenVZ kernel is running (inside and outside
143 # /proc/bc - exists on node, but not inside container.
145 if [ -d "${root}/proc/vz" -a ! -d "${root}/proc/bc" ]; then
149 # Check for LXC containers
150 # http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface
151 # Added by Marc Fournier
153 if [ -e "${root}/proc/1/environ" ] &&
154 cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container='; then
158 # Check for Linux-VServer
159 if test -e "${root}/proc/self/status" \
160 && cat "${root}/proc/self/status" | grep -q "VxID: [0-9]*"; then
162 if grep -q "VxID: 0$" "${root}/proc/self/status"; then
163 echo linux_vserver-host
165 echo linux_vserver-guest
170 # Added by Laurent Léonard.
171 if have_cpuinfo && grep -q 'UML' "${root}/proc/cpuinfo"; then
175 # Check for IBM PowerVM Lx86 Linux/x86 emulator.
176 if have_cpuinfo && grep -q '^vendor_id.*PowerVM Lx86' "${root}/proc/cpuinfo"
181 # Check for Hitachi Virtualization Manager (HVM) Virtage logical partitioning.
182 if echo "$dmi" | grep -q 'Manufacturer.*HITACHI' &&
183 echo "$dmi" | grep -q 'Product.* LPAR'; then
187 # Check for IBM SystemZ.
188 if have_cpuinfo && grep -q '^vendor_id.*IBM/S390' "${root}/proc/cpuinfo"; then
190 if [ -f "${root}/proc/sysinfo" ]; then
191 if grep -q 'VM.*Control Program.*z/VM' "${root}/proc/sysinfo"; then
193 elif grep -q '^LPAR' "${root}/proc/sysinfo"; then
194 echo ibm_systemz-lpar
196 # This is unlikely to be correct.
197 echo ibm_systemz-direct
202 # Check for Parallels.
203 if echo "$dmi" | grep -q 'Vendor: Parallels'; then
210 if [ "$cpuid" = "XenVMMXenVMM" ]; then
211 echo xen; echo xen-hvm
213 elif [ -d "${root}/proc/xen" ]; then
215 if grep -q "control_d" "${root}/proc/xen/capabilities" 2>/dev/null; then
221 elif [ -f "${root}/sys/hypervisor/type" ] &&
222 grep -q "xen" "${root}/sys/hypervisor/type"; then
223 # Ordinary kernel with pv_ops. There does not seem to be
224 # enough information at present to tell whether this is dom0
227 elif [ "$arch" = "ia64" ]; then
228 if [ -d "${root}/sys/bus/xen" -a ! -d "${root}/sys/bus/xen-backend" ]; then
229 # PV-on-HVM drivers installed in a Xen guest.
233 # There is no virt leaf on IA64 HVM. This is a last-ditch
234 # attempt to detect something is virtualized by using a
236 virt-what-ia64-xen-rdtsc-test > /dev/null 2>&1
239 1) # Could be some sort of virt, or could just be a bit slow.
245 # Check for QEMU/KVM.
247 # Parallels exports KVMKVMKVM leaf, so skip this test if we've already
248 # seen that it's Parallels. Xen uses QEMU as the device model, so
249 # skip this test if we know it is Xen.
251 if ! "$skip_qemu_kvm"; then
252 if [ "$cpuid" = "KVMKVMKVM" ]; then
255 # XXX This is known to fail for qemu with the explicit -cpu
256 # option, since /proc/cpuinfo will not contain the QEMU
257 # string. The long term fix for this would be to export
258 # another CPUID leaf for non-accelerated qemu.
259 if grep -q 'QEMU' "${root}/proc/cpuinfo"; then
266 if [ -f "${root}/.dockerinit" ]; then