Allow file resources to manage files via symlink

Fixes CHEF-4312 http://tickets.opscode.com/browse/CHEF-4312

Adds resource attribute `manage_symlink_source` to file resource and
descendents. When true, file resources will manage the source file
when a symlink exists at the destination path. When nil (default), the
source file is managed, but a warning is emitted. When false, symlinks
are not followed. In Chef 12, the default should be changed to false.

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/chef/resource/file.rb b/lib/chef/resource/file.rb
index 879d5f0c86..15adb9dae8 100644
--- a/lib/chef/resource/file.rb
+++ b/lib/chef/resource/file.rb
@@ -48,6 +48,7 @@ class Chef
         @provider = Chef::Provider::File
         @atomic_update = Chef::Config[:file_atomic_update]
         @force_unlink = false
+        @manage_symlink_source = nil
         @diff = nil
       end
 
@@ -108,6 +109,14 @@ class Chef
         )
       end
 
+      def manage_symlink_source(arg=nil)
+        set_or_return(
+          :manage_symlink_source,
+          arg,
+          :kind_of => [ TrueClass, FalseClass ]
+        )
+      end
+
     end
   end
 end