Permissions on folder different to folder's items and subfolders

Question

My Problem is that I need to create a data structure based on folders within a document library. e.g.

DocLib >>(Folder) Package1 >> Item1,Item2,SubFolder1,...

There will be thousands of items within each package and I need to set permissions to hundreds of users. But now my Problem ;) I want to set the different permission groups at package1 folder level to let the underlying items inherit from it "but" I need to make sure that the package folder itself has different permissions to make sure that the users cannot manipulate or delete it. How can I do it?! ;) Thanks in advance!

Answer 1

In this scenario I can think of two options:

1. Break inheritance on all files under the Package1 folder so that each file will have unique permissions. Perhaps this option is not practical, though, considering you say there will be potentially thousands of files under the Package1 folder.

2. Make all files under the Package1 folder inherit permissions from Package1. Develop an ItemUpdating event receiver for the document library and check if the Package1 folder was changed in any way. If so, cancel the change.