# The following resources were useful in writing this script:
# . http://www.dmo.ca/blog/20080530151107
+# Do not allow unset variables, and set defaults.
+set -u
+root=''
+skip_qemu_kvm=false
+
VERSION="@VERSION@"
function fail {
- echo "virt-what: $1"
+ echo "virt-what: $1" >&2
exit 1
}
# Check we're running as root.
-uid=`id -u`
-if [ "$uid" != 0 ]; then
+if [ "x$root" = "x" ] && [ "$EUID" -ne 0 ]; then
fail "this script must be run as root"
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 "$dmi" | grep -q 'Product.* LPAR'; then
echo virtage
fi
# Check for Parallels.
if echo "$dmi" | grep -q 'Vendor: Parallels'; then
echo parallels
- skip_qemu_kvm=1
+ skip_qemu_kvm=true
fi
# Check for Xen.
if [ "$cpuid" = "XenVMMXenVMM" ]; then
echo xen; echo xen-hvm
- skip_qemu_kvm=1
+ skip_qemu_kvm=true
elif [ -f $root/proc/xen/capabilities ]; then
echo xen
if grep -q "control_d" $root/proc/xen/capabilities; then
else
echo xen-domU
fi
- skip_qemu_kvm=1
+ skip_qemu_kvm=true
elif [ -f $root/sys/hypervisor/type ] &&
grep -q "xen" $root/sys/hypervisor/type; then
# Ordinary kernel with pv_ops. There does not seem to be
# seen that it's Parallels. Xen uses QEMU as the device model, so
# skip this test if we know it is Xen.
-if [ ! "$skip_qemu_kvm" ]; then
+if ! $skip_qemu_kvm; then
if [ "$cpuid" = "KVMKVMKVM" ]; then
echo kvm
else