+
+# Check for Docker.
+if [ -f "${root}/.dockerenv" ] || [ -f "${root}/.dockerinit" ] || \
+ grep -qF /docker/ "${root}/proc/self/cgroup" 2>/dev/null; then
+ echo docker
+fi
+
+# Check for Podman.
+if [ -e "${root}/proc/1/environ" ] &&
+ cat "${root}/proc/1/environ" | tr '\000' '\n' | grep -Eiq '^container=podman'; then
+ echo podman
+elif grep -qF /libpod- "${root}/proc/self/cgroup" 2>/dev/null; then
+ echo podman
+fi
+
+# Check ppc64 lpar, kvm or powerkvm
+
+# example /proc/cpuinfo line indicating 'not baremetal'
+# platform : pSeries
+#
+# example /proc/ppc64/lparcfg systemtype line
+# system_type=IBM pSeries (emulated by qemu)
+
+if [ "$arch" = "ppc64" ] || [ "$arch" = "ppc64le" ] ; then
+ if have_cpuinfo && grep -q 'platform.**pSeries' "${root}/proc/cpuinfo"; then
+ if grep -q 'model.*emulated by qemu' "${root}/proc/cpuinfo"; then
+ echo ibm_power-kvm
+ else
+ # Assume LPAR, now detect shared or dedicated
+ if grep -q 'shared_processor_mode=1' "${root}/proc/ppc64/lparcfg"; then
+ echo ibm_power-lpar_shared
+ else
+ echo ibm_power-lpar_dedicated
+ fi
+ # detect powerkvm?
+ fi
+ fi
+fi
+
+# Check for OpenBSD/VMM
+if [ "$cpuid" = "OpenBSDVMM58" ]; then
+ echo vmm
+fi
+
+# Check for LDoms
+if [ "${arch#sparc}" != "$arch" ] && [ -e "${root}/dev/mdesc" ]; then
+ echo ldoms
+ if [ -d "${root}/sys/class/vlds/ctrl" ] && \
+ [ -d "${root}/sys/class/vlds/sp" ]; then
+ echo ldoms-control
+ else
+ echo ldoms-guest
+ fi
+ MDPROP="${root}/usr/lib/ldoms/mdprop.py"
+ if [ -x "${MDPROP}" ]; then
+ if [ -n "$($MDPROP -v iodevice device-type=pciex)" ]; then
+ echo ldoms-root
+ echo ldoms-io
+ elif [ -n "$($MDPROP -v iov-device vf-id=0)" ]; then
+ echo ldoms-io
+ fi
+ fi
+fi
+
+# Check for AWS.
+# AWS on Xen.
+if echo "$dmi" | grep -Eq 'Version: [0-9]+\.[0-9]+\.amazon'; then
+ echo aws
+# AWS on baremetal or KVM.
+elif echo "$dmi" | grep -q 'Vendor: Amazon EC2'; then
+ echo aws
+fi