-#!/bin/bash -
+#!/bin/sh -
# @configure_input@
# Copyright (C) 2008-2011 Red Hat Inc.
#
# 'virt-what' tries to detect the type of virtualization being
# used (or none at all if we're running on bare-metal). It prints
-# out one of more lines each being a 'fact' about the virtualization.
+# out one or more lines each being a 'fact' about the virtualization.
#
# Please see also the manual page virt-what(1).
# This script should be run as root.
#
# The following resources were useful in writing this script:
-# . http://www.dmo.ca/blog/20080530151107
+# . http://dmo.ca/blog/detecting-virtualization-on-linux/
+
+# Do not allow unset variables, and set defaults.
+set -u
+root=''
+skip_qemu_kvm=false
VERSION="@VERSION@"
-function fail {
- echo "virt-what: $1"
+have_cpuinfo() {
+ test -e "${root}/proc/cpuinfo"
+}
+
+fail() {
+ echo "virt-what: $1" >&2
exit 1
}
-function usage {
+usage() {
echo "virt-what [options]"
echo "Options:"
echo " --help Display this help"
}
# Handle the command line arguments, if any.
-
-TEMP=`getopt -o v --long help --long version --long test-root: -n 'virt-what' -- "$@"`
-if [ $? != 0 ]; then exit 1; fi
-eval set -- "$TEMP"
-
-while true; do
+while test $# -gt 0; do
case "$1" in
--help) usage ;;
- --test-root)
+ --test-root=*)
# Deliberately undocumented: used for 'make check'.
- root="$2"
- shift 2
+ root=$(echo "$1" | sed 's/.*=//')
+ shift 1
+ test -z "$root" && fail "--test-root option requires a value"
;;
- -v|--version) echo $VERSION; exit 0 ;;
+ -v|--version) echo "$VERSION"; exit 0 ;;
--) shift; break ;;
- *) fail "internal error ($1)" ;;
+ *) fail "unrecognized option '$1'";;
esac
done
+test $# -gt 0 && fail "extra operand '$1'"
# Add /sbin and /usr/sbin to the path so we can find system
-# binaries like dmicode.
+# binaries like dmidecode.
# Add /usr/libexec to the path so we can find the helper binary.
prefix=@prefix@
exec_prefix=@exec_prefix@
-PATH=$root@libexecdir@:$root/sbin:$root/usr/sbin:$PATH
+PATH="${root}@libexecdir@:${root}/sbin:${root}/usr/sbin:${PATH}"
# Check we're running as root.
+EFFUID=$(id -u) || fail "failed to get current user id"
-uid=`id -u`
-if [ "$uid" != 0 ]; then
+if [ "x$root" = "x" ] && [ "$EFFUID" -ne 0 ]; then
fail "this script must be run as root"
fi
+# Try to locate the CPU-ID helper program
+CPUID_HELPER=$(which virt-what-cpuid-helper 2>/dev/null)
+if [ -z "$CPUID_HELPER" ] ; then
+ fail "virt-what-cpuid-helper program not found in \$PATH"
+fi
+
# Many fullvirt hypervisors give an indication through CPUID. Use the
# helper program to get this information.
-cpuid=`virt-what-cpuid-helper`
+cpuid=$(virt-what-cpuid-helper)
# Check for various products in the BIOS information.
+# Note that dmidecode doesn't exist on non-PC architectures. On these,
+# this will return an error which is ignored (error message redirected
+# into $dmi variable).
-dmi=`LANG=C dmidecode 2>&1`
+dmi=$(LANG=C dmidecode 2>&1)
+
+# Architecture.
+# Note for the purpose of testing, we only call uname with -p option.
+
+arch=$(uname -p)
# Check for VMware.
# cpuid check added by Chetan Loke.
fi
# Check for VirtualPC.
-
-if echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation'; then
+# The negative check for cpuid is to distinguish this from Hyper-V
+# which also has the same manufacturer string in the SM-BIOS data.
+if [ "$cpuid" != "Microsoft Hv" ] &&
+ echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation'; then
echo virtualpc
fi
# container)
# /proc/bc - exists on node, but not inside container.
-if [ -d $root/proc/vz -a ! -d $root/proc/bc ]; then
+if [ -d "${root}/proc/vz" -a ! -d "${root}/proc/bc" ]; then
echo openvz
fi
+# Check for LXC containers
+# http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface
+# Added by Marc Fournier
+
+if [ -e "${root}/proc/1/environ" ] &&
+ cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container='; then
+ echo lxc
+fi
+
# Check for Linux-VServer
-if cat $root/proc/self/status | grep -q "VxID: [0-9]*"; then
+if test -e "${root}/proc/self/status" \
+ && cat "${root}/proc/self/status" | grep -q "VxID: [0-9]*"; then
echo linux_vserver
+ if grep -q "VxID: 0$" "${root}/proc/self/status"; then
+ echo linux_vserver-host
+ else
+ echo linux_vserver-guest
+ fi
fi
# Check for UML.
# Added by Laurent Léonard.
-if grep -q 'UML' $root/proc/cpuinfo; then
+if have_cpuinfo && grep -q 'UML' "${root}/proc/cpuinfo"; then
echo uml
fi
# Check for IBM PowerVM Lx86 Linux/x86 emulator.
-if grep -q '^vendor_id.*PowerVM Lx86' $root/proc/cpuinfo; then
+if have_cpuinfo && grep -q '^vendor_id.*PowerVM Lx86' "${root}/proc/cpuinfo"
+then
echo powervm_lx86
fi
# Check for Hitachi Virtualization Manager (HVM) Virtage logical partitioning.
if echo "$dmi" | grep -q 'Manufacturer.*HITACHI' &&
- echo "$dmi" | grep -q 'Product.*HVM LPAR'; then
+ echo "$dmi" | grep -q 'Product.* LPAR'; then
echo virtage
fi
-# Check for IBM SystemZ (z/VM, not tested whether this applies to Linux
-# installed directly into an LPAR, we may need a separate test).
-if grep -q '^vendor_id.*IBM/S390' $root/proc/cpuinfo; then
- echo zvm
+# Check for IBM SystemZ.
+if have_cpuinfo && grep -q '^vendor_id.*IBM/S390' "${root}/proc/cpuinfo"; then
+ echo ibm_systemz
+ if [ -f "${root}/proc/sysinfo" ]; then
+ if grep -q 'VM.*Control Program.*z/VM' "${root}/proc/sysinfo"; then
+ echo ibm_systemz-zvm
+ elif grep -q '^LPAR' "${root}/proc/sysinfo"; then
+ echo ibm_systemz-lpar
+ else
+ # This is unlikely to be correct.
+ echo ibm_systemz-direct
+ fi
+ fi
+fi
+
+# Check for Parallels.
+if echo "$dmi" | grep -q 'Vendor: Parallels'; then
+ echo parallels
+ skip_qemu_kvm=true
fi
# Check for Xen.
if [ "$cpuid" = "XenVMMXenVMM" ]; then
echo xen; echo xen-hvm
- is_xen=1
-elif [ -f $root/proc/xen/capabilities ]; then
+ skip_qemu_kvm=true
+elif [ -d "${root}/proc/xen" ]; then
echo xen
- if grep -q "control_d" $root/proc/xen/capabilities; then
+ if grep -q "control_d" "${root}/proc/xen/capabilities" 2>/dev/null; then
echo xen-dom0
else
echo xen-domU
fi
- is_xen=1
-elif [ -d $root/proc/xen ]; then
- # This directory can be present when Xen paravirt drivers are
- # installed, even on baremetal. Don't confuse people by
- # printing anything.
- :
+ skip_qemu_kvm=true
+elif [ -f "${root}/sys/hypervisor/type" ] &&
+ grep -q "xen" "${root}/sys/hypervisor/type"; then
+ # Ordinary kernel with pv_ops. There does not seem to be
+ # enough information at present to tell whether this is dom0
+ # or domU. XXX
+ echo xen
+elif [ "$arch" = "ia64" ]; then
+ if [ -d "${root}/sys/bus/xen" -a ! -d "${root}/sys/bus/xen-backend" ]; then
+ # PV-on-HVM drivers installed in a Xen guest.
+ echo xen
+ echo xen-hvm
+ else
+ # There is no virt leaf on IA64 HVM. This is a last-ditch
+ # attempt to detect something is virtualized by using a
+ # timing attack.
+ virt-what-ia64-xen-rdtsc-test > /dev/null 2>&1
+ case "$?" in
+ 0) ;; # not virtual
+ 1) # Could be some sort of virt, or could just be a bit slow.
+ echo virt
+ esac
+ fi
fi
# Check for QEMU/KVM.
+#
+# Parallels exports KVMKVMKVM leaf, so skip this test if we've already
+# seen that it's Parallels. Xen uses QEMU as the device model, so
+# skip this test if we know it is Xen.
-if [ ! "$is_xen" ]; then
- # Disable this test if we know this is Xen already, because Xen
- # uses QEMU for its device model.
-
- if grep -q 'QEMU' $root/proc/cpuinfo; then
- if [ "$cpuid" = "KVMKVMKVM" ]; then
- echo kvm
- else
+if ! "$skip_qemu_kvm"; then
+ if [ "$cpuid" = "KVMKVMKVM" ]; then
+ echo kvm
+ else
+ # XXX This is known to fail for qemu with the explicit -cpu
+ # option, since /proc/cpuinfo will not contain the QEMU
+ # string. The long term fix for this would be to export
+ # another CPUID leaf for non-accelerated qemu.
+ if grep -q 'QEMU' "${root}/proc/cpuinfo"; then
echo qemu
fi
fi
fi
+
+# Check for Docker.
+if [ -f "${root}/.dockerinit" ]; then
+ echo docker
+fi
git.annexia.org / virt-what.git / blobdiff