#2632 HIGH Untriag: non-mounted directories are visible in containers initially

[Zarro Boogs per Child]

#2632: non-mounted directories are visible in containers initially
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 Reporter:  mburns    |       Owner:  mstone   
     Type:  defect    |      Status:  new      
 Priority:  high      |   Milestone:  Untriaged
Component:  security  |     Version:  Build 239
 Keywords:            |    Verified:  1        
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 Invalid are list'able inside containers under certain conditions.
 Recreate:

 1. cd /root
 2. run rainbow, /etc/X11/prefdm -nodaemon (sugar)
 3. run Terminate/Terminal activity
 4. type ls. will be show the directory you launched from (/root) which is
 not part of the container and should not 'exist' in the island.
 5. cd .. && ls /root #leave the directory and try to list it again, this
 will error.

 It appears the working directory is temprorarily grandfathered into
 containers until you leave.

 Note: this also effects Open dialogs for things like W&L, where steps 1
 and 2 are followed.

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Ticket URL: <https://dev.laptop.org/ticket/2632>
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