lib/ohai/plugins/linux/virtualization.rb in kurchatov-0.0.5.pre5 vs lib/ohai/plugins/linux/virtualization.rb in kurchatov-0.0.5

@@ -14,28 +14,28 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
 
-provides "virtualization"
+provides 'virtualization'
 
 virtualization Mash.new
 
 # if it is possible to detect paravirt vs hardware virt, it should be put in
 # virtualization[:mechanism]
 
 ## Xen
 # /proc/xen is an empty dir for EL6 + Linode Guests
-if File.exists?("/proc/xen")
-  virtualization[:system] = "xen"
+if File.exists?('/proc/xen')
+  virtualization[:system] = 'xen'
   # Assume guest
-  virtualization[:role] = "guest"
+  virtualization[:role] = 'guest'
 
   # This file should exist on most Xen systems, normally empty for guests
-  if File.exists?("/proc/xen/capabilities")
-    if File.read("/proc/xen/capabilities") =~ /control_d/i
-      virtualization[:role] = "host"
+  if File.exists?('/proc/xen/capabilities')
+    if File.read('/proc/xen/capabilities') =~ /control_d/i
+      virtualization[:role] = 'host'
     end
   end
 end
 
 # Xen Notes:
@@ -44,82 +44,82 @@
 # - EL6 guests carry a 'hypervisor' cpu flag
 # - Additional edge cases likely should not change the above assumptions
 #   but rather be additive - btm
 
 # Detect from kernel module
-if File.exists?("/proc/modules")
-  modules = File.read("/proc/modules")
+if File.exists?('/proc/modules')
+  modules = File.read('/proc/modules')
   if modules =~ /^kvm/
-    virtualization[:system] = "kvm"
-    virtualization[:role] = "host"
+    virtualization[:system] = 'kvm'
+    virtualization[:role] = 'host'
   elsif modules =~ /^vboxdrv/
-    virtualization[:system] = "vbox"
-    virtualization[:role] = "host"
+    virtualization[:system] = 'vbox'
+    virtualization[:role] = 'host'
   elsif modules =~ /^vboxguest/
-    virtualization[:system] = "vbox"
-    virtualization[:role] = "guest"
+    virtualization[:system] = 'vbox'
+    virtualization[:role] = 'guest'
   end
 end
 
 # Detect KVM/QEMU from cpuinfo, report as KVM
 # We could pick KVM from 'Booting paravirtualized kernel on KVM' in dmesg
 # 2.6.27-9-server (intrepid) has this / 2.6.18-6-amd64 (etch) does not
 # It would be great if we could read pv_info in the kernel
 # Wait for reply to: http://article.gmane.org/gmane.comp.emulators.kvm.devel/27885
-if File.exists?("/proc/cpuinfo")
-  if File.read("/proc/cpuinfo") =~ /QEMU Virtual CPU/
-    virtualization[:system] = "kvm"
-    virtualization[:role] = "guest"
+if File.exists?('/proc/cpuinfo')
+  if File.read('/proc/cpuinfo') =~ /QEMU Virtual CPU/
+    virtualization[:system] = 'kvm'
+    virtualization[:role] = 'guest'
   end
 end
 
 # Detect OpenVZ / Virtuozzo.
 # http://wiki.openvz.org/BC_proc_entries
-if File.exists?("/proc/bc/0")
-  virtualization[:system] = "openvz"
-  virtualization[:role] = "host"
-elsif File.exists?("/proc/vz")
-  virtualization[:system] = "openvz"
-  virtualization[:role] = "guest"
+if File.exists?('/proc/bc/0')
+  virtualization[:system] = 'openvz'
+  virtualization[:role] = 'host'
+elsif File.exists?('/proc/vz')
+  virtualization[:system] = 'openvz'
+  virtualization[:role] = 'guest'
 end
 
 # http://www.dmo.ca/blog/detecting-virtualization-on-linux
-if File.exists?("/usr/sbin/dmidecode")
-  popen4("dmidecode") do |pid, stdin, stdout, stderr|
+if File.exists?('/usr/sbin/dmidecode')
+  popen4('dmidecode') do |pid, stdin, stdout, stderr|
     stdin.close
     dmi_info = stdout.read
     case dmi_info
-    when /Manufacturer: Microsoft/
-      if dmi_info =~ /Product Name: Virtual Machine/
-        virtualization[:system] = "virtualpc"
-        virtualization[:role] = "guest"
-      end
-    when /Manufacturer: VMware/
-      if dmi_info =~ /Product Name: VMware Virtual Platform/
-        virtualization[:system] = "vmware"
-        virtualization[:role] = "guest"
-      end
-    when /Manufacturer: Xen/
-      if dmi_info =~ /Product Name: HVM domU/
-        virtualization[:system] = "xen"
-        virtualization[:role] = "guest"
-      end
-    else
-      nil
+      when /Manufacturer: Microsoft/
+        if dmi_info =~ /Product Name: Virtual Machine/
+          virtualization[:system] = 'virtualpc'
+          virtualization[:role] = 'guest'
+        end
+      when /Manufacturer: VMware/
+        if dmi_info =~ /Product Name: VMware Virtual Platform/
+          virtualization[:system] = 'vmware'
+          virtualization[:role] = 'guest'
+        end
+      when /Manufacturer: Xen/
+        if dmi_info =~ /Product Name: HVM domU/
+          virtualization[:system] = 'xen'
+          virtualization[:role] = 'guest'
+        end
+      else
+        nil
     end
 
   end
 end
 
 # Detect Linux-VServer
-if File.exists?("/proc/self/status")
-  proc_self_status = File.read("/proc/self/status")
+if File.exists?('/proc/self/status')
+  proc_self_status = File.read('/proc/self/status')
   vxid = proc_self_status.match(/^(s_context|VxID): (\d+)$/)
   if vxid and vxid[2]
-    virtualization[:system] = "linux-vserver"
-    if vxid[2] == "0"
-      virtualization[:role] = "host"
+    virtualization[:system] = 'linux-vserver'
+    if vxid[2] == '0'
+      virtualization[:role] = 'host'
     else
-      virtualization[:role] = "guest"
-     end
+      virtualization[:role] = 'guest'
+    end
   end
 end