Add facts to note EFI status

Author: jcpunk

lib/facter/efi.rb

@@ -0,0 +1,11 @@
+# _Description_
+#
+# Return true if system booted via EFI
+#
+if Facter.value(:kernel).downcase == "linux" then
+  Facter.add("efi_enabled") do
+    setcode do
+      File.exist?('/sys/firmware/efi')
+    end
+  end
+end

lib/facter/secure_boot_enabled.rb

@@ -0,0 +1,25 @@
+# _Description_
+#
+# Return true if system booted via uEFI Secure Boot
+#
+if Facter.value(:kernel).downcase == "linux" then
+  Facter.add("secure_boot_enabled") do
+    setcode do
+      if File.exist?('/sys/firmware/efi')
+        Dir.glob('/sys/firmware/efi/efivars/SecureBoot-*').each do | file |
+          File.open(file, 'r') do | hexcode |
+            hexcode.read(4)
+            code = hexcode.read(16).unpack('H*').first.to_i
+            if code == 1
+              true
+            else
+              false
+            end
+          end
+        end
+      else
+        false
+      end
+    end
+  end
+end