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 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 ($1)" ;;
69 # Add /sbin and /usr/sbin to the path so we can find system
70 # binaries like dmidecode.
71 # Add /usr/libexec to the path so we can find the helper binary.
73 exec_prefix=@exec_prefix@
74 PATH="${root}@libexecdir@:${root}/sbin:${root}/usr/sbin:${PATH}"
76 # Check we're running as root.
77 EFFUID=$(id -u) || fail "failed to get current user id"
79 if [ "x$root" = "x" ] && [ "$EFFUID" -ne 0 ]; then
80 fail "this script must be run as root"
83 # Try to locate the CPU-ID helper program
84 CPUID_HELPER=$(which virt-what-cpuid-helper 2>/dev/null)
85 if [ -z "$CPUID_HELPER" ] ; then
86 fail "virt-what-cpuid-helper program not found in \$PATH"
89 # Many fullvirt hypervisors give an indication through CPUID. Use the
90 # helper program to get this information.
92 cpuid=$(virt-what-cpuid-helper)
94 # Check for various products in the BIOS information.
95 # Note that dmidecode doesn't exist on non-PC architectures. On these,
96 # this will return an error which is ignored (error message redirected
97 # into $dmi variable).
99 dmi=$(LANG=C dmidecode 2>&1)
102 # Note for the purpose of testing, we only call uname with -p option.
107 # cpuid check added by Chetan Loke.
109 if [ "$cpuid" = "VMwareVMware" ]; then
111 elif echo "$dmi" | grep -q 'Manufacturer: VMware'; then
116 # http://blogs.msdn.com/b/sqlosteam/archive/2010/10/30/is-this-real-the-metaphysics-of-hardware-virtualization.aspx
117 if [ "$cpuid" = "Microsoft Hv" ]; then
121 # Check for VirtualPC.
122 # The negative check for cpuid is to distinguish this from Hyper-V
123 # which also has the same manufacturer string in the SM-BIOS data.
124 if [ "$cpuid" != "Microsoft Hv" ] &&
125 echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation'; then
129 # Check for VirtualBox.
130 # Added by Laurent Léonard.
131 if echo "$dmi" | grep -q 'Manufacturer: innotek GmbH'; then
135 # Check for OpenVZ / Virtuozzo.
136 # Added by Evgeniy Sokolov.
137 # /proc/vz - always exists if OpenVZ kernel is running (inside and outside
139 # /proc/bc - exists on node, but not inside container.
141 if [ -d "${root}/proc/vz" -a ! -d "${root}/proc/bc" ]; then
145 # Check for LXC containers
146 # http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface
147 # Added by Marc Fournier
149 if [ -e "${root}/proc/1/environ" ] &&
150 cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container='; then
154 # Check for Linux-VServer
155 if cat "${root}/proc/self/status" | grep -q "VxID: [0-9]*"; then
157 if grep -q "VxID: 0$" "${root}/proc/self/status"; then
158 echo linux_vserver-host
160 echo linux_vserver-guest
165 # Added by Laurent Léonard.
166 if grep -q 'UML' "${root}/proc/cpuinfo"; then
170 # Check for IBM PowerVM Lx86 Linux/x86 emulator.
171 if grep -q '^vendor_id.*PowerVM Lx86' "${root}/proc/cpuinfo"; then
175 # Check for Hitachi Virtualization Manager (HVM) Virtage logical partitioning.
176 if echo "$dmi" | grep -q 'Manufacturer.*HITACHI' &&
177 echo "$dmi" | grep -q 'Product.* LPAR'; then
181 # Check for IBM SystemZ.
182 if grep -q '^vendor_id.*IBM/S390' "${root}/proc/cpuinfo"; then
184 if [ -f "${root}/proc/sysinfo" ]; then
185 if grep -q 'VM.*Control Program.*z/VM' "${root}/proc/sysinfo"; then
187 elif grep -q '^LPAR' "${root}/proc/sysinfo"; then
188 echo ibm_systemz-lpar
190 # This is unlikely to be correct.
191 echo ibm_systemz-direct
196 # Check for Parallels.
197 if echo "$dmi" | grep -q 'Vendor: Parallels'; then
204 if [ "$cpuid" = "XenVMMXenVMM" ]; then
205 echo xen; echo xen-hvm
207 elif [ -d "${root}/proc/xen" ]; then
209 if grep -q "control_d" "${root}/proc/xen/capabilities" 2>/dev/null; then
215 elif [ -f "${root}/sys/hypervisor/type" ] &&
216 grep -q "xen" "${root}/sys/hypervisor/type"; then
217 # Ordinary kernel with pv_ops. There does not seem to be
218 # enough information at present to tell whether this is dom0
221 elif [ "$arch" = "ia64" ]; then
222 if [ -d "${root}/sys/bus/xen" -a ! -d "${root}/sys/bus/xen-backend" ]; then
223 # PV-on-HVM drivers installed in a Xen guest.
227 # There is no virt leaf on IA64 HVM. This is a last-ditch
228 # attempt to detect something is virtualized by using a
230 virt-what-ia64-xen-rdtsc-test > /dev/null 2>&1
233 1) # Could be some sort of virt, or could just be a bit slow.
239 # Check for QEMU/KVM.
241 # Parallels exports KVMKVMKVM leaf, so skip this test if we've already
242 # seen that it's Parallels. Xen uses QEMU as the device model, so
243 # skip this test if we know it is Xen.
245 if ! "$skip_qemu_kvm"; then
246 if [ "$cpuid" = "KVMKVMKVM" ]; then
249 # XXX This is known to fail for qemu with the explicit -cpu
250 # option, since /proc/cpuinfo will not contain the QEMU
251 # string. The long term fix for this would be to export
252 # another CPUID leaf for non-accelerated qemu.
253 if grep -q 'QEMU' "${root}/proc/cpuinfo"; then
260 if [ -f "${root}/.dockerinit" ]; then