X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=virt-what.in;h=6e9aef11c2df77790b1007115a8f754c2e371c83;hb=468ae304e6a02bd433c3f282fab9ab0a2f468269;hp=c04203e442e02ee218d655dd2895e4efec150e81;hpb=4f9dc9931fdfb8a2cb43d54bc8add7f9df278d80;p=virt-what.git

diff --git a/virt-what.in b/virt-what.in
index c04203e..6e9aef1 100644
--- a/virt-what.in
+++ b/virt-what.in
@@ -1,4 +1,4 @@
-#!/bin/bash -
+#!/bin/sh -
 # @configure_input@
 # Copyright (C) 2008-2011 Red Hat Inc.
 #
@@ -33,12 +33,16 @@ skip_qemu_kvm=false
 
 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"
@@ -74,11 +78,18 @@ 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.
 
@@ -145,7 +156,8 @@ if [ -e "${root}/proc/1/environ" ] &&
 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
@@ -156,12 +168,13 @@ fi
 
 # Check for UML.
 # Added by Laurent Léonard.
-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
 
@@ -172,7 +185,7 @@ if echo "$dmi" | grep -q 'Manufacturer.*HITACHI' &&
 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