Autoconfify, add CPUID helper program to detect HVM domains (Paolo Bonzini).1.1

1 files changed, 126 insertions, 0 deletions

diff --git a/virt-what.in b/virt-what.in
new file mode 100644
index 0000000..cc61aae
--- /dev/null
+++ b/virt-what.in
@@ -0,0 +1,126 @@
+#!/bin/bash -
+# @configure_input@
+# Copyright (C) 2008-2009 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# '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.
+#
+# 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
+
+VERSION="@VERSION@"
+
+function fail {
+    echo "virt-what: $1"
+    exit 1
+}
+
+function usage {
+    echo "virt-what [options]"
+    echo "Options:"
+    echo "  --help          Display this help"
+    echo "  --version       Display version and exit"
+    exit 0
+}
+
+# Handle the command line arguments, if any.
+
+TEMP=`getopt -o v --long help --long version -n 'virt-what' -- "$@"`
+if [ $? != 0 ]; then exit 1; fi
+eval set -- "$TEMP"
+
+while true; do
+    case "$1" in
+	--help) usage ;;
+	-v|--version) echo $VERSION; exit 0 ;;
+	--) shift; break ;;
+	*) fail "internal error" ;;
+    esac
+done
+
+# Check we're running as root.
+
+uid=`id -u`
+if [ "$uid" != 0 ]; then
+    fail "this script must be run as root"
+fi
+
+PATH=/sbin:/usr/sbin:$PATH
+
+# Check for various products in the BIOS information.
+
+dmi=`dmidecode 2>&1`
+
+if echo "$dmi" | grep -q 'Manufacturer: VMware'; then
+    echo vmware
+fi
+
+if echo "$dmi" | grep -q 'Manufacturer: Microsoft Corporation'; then
+    echo virtualpc
+fi
+
+# Check for OpenVZ / Virtuozzo.
+# Added by Evgeniy Sokolov.
+# /proc/vz - always exists if OpenVZ kernel is running (inside and outside
+# container)
+# /proc/bc - exists on node, but not inside container.
+
+if [ -d /proc/vz -a ! -d /proc/bc ]; then
+    echo openvz
+fi
+
+# To tell if it is Xen and KVM HVM (fully virtualized) we can use this
+# helper C program.
+
+cpuid=`virt-what-cpuid-helper`
+
+# Check for Xen.
+
+if [ "$cpuid" = "XenVMMXenVMM" ]; then
+    echo xen; echo xen-hvm
+    is_xen=1
+elif [ -f /proc/xen/privcmd ]; then
+    echo xen; echo xen-dom0
+    is_xen=1
+elif [ -f /proc/xen/capabilities ]; then
+    echo xen; echo xen-domU
+    is_xen=1
+elif [ -d /proc/xen ]; then
+    # This directory can be present when Xen paravirt drivers are
+    # installed, even on baremetal.  Don't confuse people by
+    # printing anything.
+    :
+fi
+
+# Check for QEMU/KVM.
+
+if [ ! "$is_xen" ]; then
+    # Disable this test if we know this is Xen already, because Xen
+    # uses QEMU for its device model.
+
+    if grep -q 'QEMU' /proc/cpuinfo; then
+	if [ "$cpuid" = "KVMKVMKVM" ]; then
+	    echo kvm
+	else
+	    echo qemu
+	fi
+    fi
+fi