-#!/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
VERSION="@VERSION@"
-function fail {
+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 ;;
--) 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:${PATH}"
# Check we're running as root.
+EFFUID=$(id -u) || fail "failed to get current user id"
-if [ "x$root" = "x" ] && [ "$EUID" -ne 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.
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 "${root}/proc/self/status" | grep -q "VxID: [0-9]*"; then
echo linux_vserver
if grep -q "VxID: 0$" "${root}/proc/self/status"; then
echo linux_vserver-host
# Check for UML.
# Added by Laurent LĂ©onard.
-if grep -q 'UML' "${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' "${root}/proc/cpuinfo"
+then
echo powervm_lx86
fi
fi
# Check for IBM SystemZ.
-if grep -q '^vendor_id.*IBM/S390' "${root}/proc/cpuinfo"; then
+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' "${root}/proc/sysinfo"; then
fi
fi
fi
+
+# Check for Docker.
+if [ -f "${root}/.dockerinit" ]; then
+ echo docker
+fi