Ubuntu
util-linux package

restrict user access to folder but allow running a program in it

Asked by Oleg Naumenko

I have superuser priveleges on a system. How do I restrict user with normal user rights to access folder with document directly (for copying or modification) but allow him to view these in a software at the same time?

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delance (olivier-delance) said : 		#1

I'm not sure I understood your question.
Classical Unix access rights are independent of the way you access files, it only depends of operation: read, write, run/go into folder.
Have a look at ACL or Secure Linux.

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Oleg Naumenko (oleg-be-mix) said : 		#2

These are proprietary format special data files and the app is special viewer for them.

I need users to be able to access these files from application but not from file manager - to avoid direct file copying. Is there a way for this in Ubuntu?

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mycae (mycae) said : 		#3

That sounds like DRM. DRM does not work -- if someone can view a file, they can certainly copy it, unless you control the entire software and hardware chain.

You can however present these things in inconvenient formats (eg present text as an image).

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