Chetan Loke
2010-Jun-29 23:29 UTC
[PATCH] virt-what.in: Added VMware virt detection using cpuid in wrapper script
Brief discussion thread - http://lkml.org/lkml/2010/6/29/355
Added VMware detection via cpuid.Mimic'd VMware's balloon driver's
init-time
check(cpuid followed by dmi-checks). Moved the existing logic into a simple
function to achieve that.
Tested virt-what.in(ran as a script) and virt-what-cpuid-helper within
a Linux guest on ESX. Thanks.
Signed-off-by: Chetan Loke <loke.c at alumni.neu.edu>
---
virt-what.in | 150 ++++++++++++++++++++++++++++++++++++-----------------------
1 file changed, 93 insertions(+), 57 deletions(-)
--- virt-what.in.orig 2010-06-29 18:42:20.166647585 -0400
+++ virt-what.in 2010-06-29 18:59:54.765647739 -0400
@@ -25,9 +25,19 @@
#
# The following resources were useful in writing this script:
# . http://www.dmo.ca/blog/20080530151107
+#
+#
+# Added VMware detection using cpuid.
+# Added functions to check the environment type
+# 06/29/2010 - Chetan Loke <loke.c at alumni.neu.edu>
+#
+
VERSION="@VERSION@"
+cpuid+is_xen=1
+
function fail {
echo "virt-what: $1"
exit 1
@@ -38,7 +48,8 @@
echo "Options:"
echo " --help Display this help"
echo " --version Display version and exit"
- exit 0
+ # exit after printing
+ exit 1
}
# Handle the command line arguments, if any.
@@ -70,74 +81,99 @@
exec_prefix=@exec_prefix@
PATH=@libexecdir@:/sbin:/usr/sbin:$PATH
-# Check for various products in the BIOS information.
+detect_virt_env_using_misc_info() {
-dmi=`dmidecode 2>&1`
+ # Check for various products in the BIOS information.
-if echo "$dmi" | grep -q 'Manufacturer: VMware'; then
- echo vmware
-fi
+ dmi=`dmidecode 2>&1`
-if echo "$dmi" | grep -q 'Manufacturer: Microsoft
Corporation'; then
- echo virtualpc
-fi
+ if echo "$dmi" | grep -q 'Manufacturer: VMware'; then
+ echo vmware
+ exit 0
+ fi
-# Check for VirtualBox.
-# Added by Laurent L?onard.
-if echo "$dmi" | grep -q 'Manufacturer: innotek GmbH'; then
- echo virtualbox
-fi
+ if echo "$dmi" | grep -q 'Manufacturer: Microsoft
Corporation'; then
+ echo virtualpc
+ exit 0
+ fi
-# Check for OpenVZ / Virtuozzo.
-# Added by Evgeniy Sokolov.
-# /proc/vz - always exists if OpenVZ kernel is running (inside and outside
-# container)
-# /proc/bc - exists on node, but not inside container.
+ # Check for VirtualBox.
+ # Added by Laurent L?onard.
+ if echo "$dmi" | grep -q 'Manufacturer: innotek GmbH';
then
+ echo virtualbox
+ exit 0
+ fi
-if [ -d /proc/vz -a ! -d /proc/bc ]; then
- echo openvz
-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
+ exit 0
+ fi
-# Check for UML.
-# Added by Laurent L?onard.
-if grep -q 'UML' /proc/cpuinfo; then
- echo uml
-fi
+ # Check for UML.
+ # Added by Laurent L?onard.
+ if grep -q 'UML' /proc/cpuinfo; then
+ echo uml
+ exit 0
+ fi
+
+ exit 1
+}
# 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.
+detect_virt_env_using_cpuid () {
+ cpuid=`virt-what-cpuid-helper`
+
+ # Check for Xen.
+
+ if [ "$cpuid" = "XenVMMXenVMM" ]; then
+ echo xen; echo xen-hvm
+ exit 0
+ elif [ -f /proc/xen/privcmd ]; then
+ echo xen; echo xen-dom0
+ exit 0
+ elif [ -f /proc/xen/capabilities ]; then
+ echo xen; echo xen-domU
+ exit 0
+ elif [ -d /proc/xen ]; then
+ # This directory can be present when Xen paravirt drivers are
+ # installed, even on baremetal. Don't confuse people by
+ # printing anything.
+ :
+ fi
-if [ "$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.
-# 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
+ exit 0
+ else
+ echo qemu
+ exit 0
+ fi
+ fi
+ fi
-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
+ # Check for VMware
+ if [ "$cpuid" = "VMwareVMware" ]; then
+ echo vmware
+ exit 0
fi
- fi
-fi
+}
+
+
+detect_virt_env_using_cpuid
+# If the above fails then call the next function
+detect_virt_env_using_misc_info
Richard W.M. Jones
2010-Jul-01 13:15 UTC
[PATCH] virt-what.in: Added VMware virt detection using cpuid in wrapper script
On Tue, Jun 29, 2010 at 07:29:01PM -0400, Chetan Loke wrote:> Brief discussion thread - http://lkml.org/lkml/2010/6/29/355 > > Added VMware detection via cpuid.Mimic'd VMware's balloon driver's init-time > check(cpuid followed by dmi-checks). Moved the existing logic into a simple > function to achieve that. > > Tested virt-what.in(ran as a script) and virt-what-cpuid-helper within > a Linux guest on ESX. Thanks.Chetan, do you think you could send me this one again as an attachment. Some MUA/MTA along the way has sufficiently mangled the patch such that it can no longer be applied. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top