On mar, 2014-03-18 at 00:22 +0000, 임범진 wrote:

> For external memory cards, we are thinking that 
> the use of links in the home directories is needed
> for applying quotas (see below page 7). Mounting
> memory cards would imply the creation/synchronisation
> of the links and of the data on the card. For example:
> on the card, should exists the directories:
> - /home/user1...usern
> - /opt/...
> and the main FS would have the links:
> - /home/user1/sdcard -> /mount/sdcard/home/user1
> - /opt/sdcard -> /mount/sdcard/opt
> That is our draft idea.
> [Bumjin] My point was that the SDcard cannot be access
> controlled when it's plugged off and plugged in to window 
> machine. If we cannot fully enforce, then we should untrust.
> That was the simple reason.

You are right, I agree. Maybe was I confused between "external memory
card" and "device media storage". But part of the proposal may still be
accurate.

I still think that if a user plug a memory SDcard or USBkey, its data
should not be shared by default. That use case is complicated. For
multi-seat configuration as what for IVI, the scenario is that the
device will be by default associated to the seat's user.

Best regards
José

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