I am working on a website where i need to allow a role to add files to a node.
Till now i created the content type i need with all the informations and a file field with unlimited number of values.
I manage the access to the fields using the field permissions module, so that only the file field can be modified.
However, if i enable the role to edit the content, the role is not only able to upload a file, but also to change the title of the content and to remove the files already present.
How can i restrict the actions of this role to only upload files for this content type?