From: Guido De Rosa <guidoderosa@...>
Date: 2010-10-19T08:20:22+09:00
Subject: Re: su {block of code.}

Tony Arcieri:
> You could obtain an object over DRb and instance eval the block in the
> scope
> of the DRb object.
>
> Any methods executed would be called on the DRb object.

Still doesn't work.

server.rb, run as root:

  DRb.start_service(URI, self) # export the 'main' Object

client.rb, as a normal user:

  o = DRbObject.new_with_uri(SERVER_URI) #=> main

  o.instance_eval do
    ::File.open('/TEST', 'w'){|f| f.puts 'hello'}
  end

I keep getting a Permission Denied error (Errno::EACCES)

And if I change '/TEST' into '/tmp/TEST', It's clearly seen that the 
file has been created by the normal user, not by root.

G.

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