[Gta04-owner] Upstream Replicant 4.2 support for GTA04

[Dr. H. Nikolaus Schaller]

Am 03.03.2014 um 09:11 schrieb mx4812 at arcor.de:

> 
>>> The replicant recovery tool could just rm -rf /data/* if it is not a
>> mountpoint.
>> 
>> I still wonder what this function should be good for. No desktop OS has or
>> needs a "delete all data" function and issues 3 warnings if you want to
>> reformat
>> a disk.
> 
> Yeah. Neverthelless, having a simple gui way to reinitialize the OS, and optionally 
> "delete all the crap that got installed" really is an important usability feature
> for personal devices that can change owners, if one looks for an audience
> slightly broader than devs and admins.
> (Even on devices that are not stakeholder locked.)

Yes, that is important.

Our solution might sound too simple: just take out the SD card before handing
over the device...

> Just guessing: Facing malware and toolkits to produce trackware by default,
> a separate root/sys partition could be useful for mounting it read-only,
> formatting or rm -rf could be seen as a thorogh clean up method when apps
> may create/install/leave behind more files and executables themself, and a tool
> may be needed to escalate user permissions for mere users?
> 
> But I don't know android.
> Well, does android separate user installed apps and (noexec) user data ($HOME)?