Patch to solve issue gecos-team#2 - Add boot options data to ohai

files/default/plugins/grub_options.rb

@@ -0,0 +1,90 @@
+provides 'ohai_gecos'
+
+if ohai_gecos.nil?
+  ohai_gecos Mash.new
+end
+begin
+  grub_options = Hash.new
+  submenu_stack = Array.new
+
+  tags_stack = Array.new
+  last_tag = 'ROOT'
+  tags_stack.push(last_tag)
+  menuentry = 'UNKNOWN'
+
+  lineno = 0
+  File.open('/boot/grub/grub.cfg','r') do |grubconf_file|
+    grubconf_file.each_line do |line|
+        lineno = lineno + 1
+        if ( line =~ /menuentry ([^{]+){/ )
+            menuentry = 'UNKNOWN'
+            if ( line =~ /menuentry[ ]+'([^']+)'/ )
+                menuentry = line.scan( /'([^']+)'/).first.first
+            end
+            if ( line =~ /menuentry[ ]+"([^"]+)"/ )
+                menuentry = line.scan( /"([^"]+)"/).first.first
+            end
+
+            #puts lineno.to_s+" MENUENTRY:"+menuentry
+            grub_options[menuentry] = ''
+            tags_stack.push('menuentry')
+            last_tag = 'menuentry'
+
+        elsif ( line =~ /submenu ([^{]+){/ )
+            submenu = 'UNKNOWN'
+            if ( line =~ /submenu[ ]+'([^']+)'/ )
+                submenu = line.scan( /'([^']+)'/).first.first
+            end
+            if ( line =~ /submenu[ ]+"([^"]+)"/ )
+                submenu = line.scan( /"([^"]+)"/).first.first
+            end
+
+            #puts lineno.to_s+" SUBMENU:"+submenu
+            tags_stack.push('submenu')
+            last_tag = 'submenu'
+            submenu_elements = Hash.new
+            submenu_stack.push(grub_options)
+            grub_options[submenu] = submenu_elements
+            grub_options = submenu_elements
+
+        elsif ( line =~ /function ([^{]+){/ )
+            funcname = 'UNKNOWN'
+            if ( line =~ /function[ ]+([^ {]+)/ )
+                funcname = line.scan( /function[ ]+([^ {]+)/).first.first
+            end
+
+            #puts lineno.to_s+" FUNCTION:"+funcname+" "+lineno.to_s
+            tags_stack.push('function')
+            last_tag = 'function'
+
+
+        elsif ( line =~ /([^{]+){/ and not line =~ /\${/ )
+            elmtag = line.scan( /[ ]*([^ {]+)/).first.first
+            tags_stack.push(elmtag)
+            last_tag = elmtag            
+            #puts "UNKNOWN TAG:"+elmtag+" "+lineno.to_s
+
+        elsif ( line =~ /}/ and not line =~ /\${/ )
+            last_tag = tags_stack.pop()
+            #puts lineno.to_s+' END '+last_tag
+            if (last_tag == 'submenu')
+                grub_options = submenu_stack.pop()
+            elsif (last_tag == 'ROOT')
+                tags_stack.push(last_tag)
+            end
+
+        elsif (last_tag == 'menuentry' and not grub_options.nil? and not line.nil?)
+            grub_options[menuentry] += line+"\n"
+
+        end
+
+    end    
+
+    #puts JSON.dump grub_options
+  end
+
+rescue Exception => e
+  puts e.message
+end
+
+ohai_gecos['grub_options'] = grub_options