read symlink destination file types

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>

lib/vulcano/plugins/backend_file_common.rb

@@ -35,23 +35,23 @@ class Vulcano::Plugins::Backend
     # Additional methods for convenience
 
     def file?
-      type == :file
+      target_type == :file
     end
 
     def block_device?
-      type == :block_device
+      target_type == :block_device
     end
 
     def character_device?
-      type == :character_device
+      target_type == :character_device
     end
 
     def socket?
-      type == :socket
+      target_type == :socket
     end
 
     def directory?
-      type == :directory
+      target_type == :directory
     end
 
     def symlink?
@@ -59,7 +59,7 @@ class Vulcano::Plugins::Backend
     end
 
     def pipe?
-      type == :pipe?
+      target_type == :pipe?
     end
 
     def mode?(sth)
@@ -87,6 +87,15 @@ class Vulcano::Plugins::Backend
 
     private
 
+    def target_type
+      # Just return the type unless this is a symlink
+      return type unless type == :symlink
+      # Get the link's target type, i.e. the real destination's type
+      return link_target.type unless link_target.nil?
+      # Return unknown if we don't know where this is pointing to
+      :unknown
+    end
+
     UNIX_MODE_OWNERS = {
       owner: 00700,
       group: 00070,

lib/vulcano/plugins/backend_linux_file.rb

@@ -24,6 +24,12 @@ class Vulcano::Plugins::Backend
       )
     end
 
+    def link_target
+      return @link_target unless @link_target.nil?
+      return @link_target = nil if link_path.nil?
+      @link_target = @backend.file(link_path)
+    end
+
     def link_path
       return nil unless symlink?
       @link_path ||= (