From: "Iñaki Baz Castillo" <ibc@...>
Date: 2009-12-13T02:12:12+09:00
Subject: Re: How to make a ruby program tu run unser other user:group different than root

El Sábado, 12 de Diciembre de 2009, Iñaki Baz Castillo escribió:
> - My home "/home/ibc" has these owner/group and permissions:
> 
>   drwxr-x---  ibc ibc_grp  /home/ibc/
> 
> - Other user "alice" belongs to group "ibc_grp" group so "alice" user can
>  read  into /home/ibc:
> 
>   ~# whoami
>   alice
>   ~# cd /home/ibc
>   ~# echo $?
>   0
>     
> - Now I start a irb session with root user, load "fileutils" and your 
> "kernel#su" Ruby file.
> 
> - I do "su" to become "alice:alice" and try to enter in /home/ibc, but it 
> fails:
> 
>   irb> su "alice", "alice" do Dir.chdir("/home/ibc") ; end
>   (irb):9:in `chdir': Permission denied - /home/ibc (Errno::EACCES)
>         from (irb):9:in `block in irb_binding'
>         from /PATH_TO/kernel.rb:7:in `block in su'
> 
> - It also doesn't work even setting "root" as group (same error).

But does work if I do:

   irb> su "alice", "ibc_grp" do Dir.chdir("/home/ibc") ; end

Strange? It doesn't behave as when running a shell.


-- 
Iñaki Baz Castillo <ibc@aliax.net>