Allow using sysctl, for example when /proc isn't available

diff --git a/virt-what.in b/virt-what.in
index 2011ff4..d037a99 100644 (file)
--- a/virt-what.in
+++ b/virt-what.in
@@ -38,6 +38,13 @@ have_cpuinfo () {
     test -e "${root}/proc/cpuinfo"
 }
 
+use_sysctl() {
+    # Lacking /proc, on some systems sysctl can be used instead.
+    OS=$(uname) || fail "failed to get operating system name"
+
+    [ "$OS" == "OpenBSD" ]
+}
+
 fail () {
     echo "virt-what: $1" >&2
     exit 1
@@ -304,6 +311,12 @@ if ! "$skip_qemu_kvm"; then
         # We are running as a spapr KVM guest on ppc64
         echo kvm
         skip_lkvm=true
+    elif use_sysctl; then
+        # SmartOS KVM
+        product=$(sysctl -n hw.product)
+        if echo "$product" | grep -q 'SmartDC HVM'; then
+            echo kvm
+        fi
     else
         # This is known to fail for qemu with the explicit -cpu
         # option, since /proc/cpuinfo will not contain the QEMU