ubuntu-phone team mailing list archive

[Pat McGowan <pat.mcgowan@xxxxxxxxxxxxx>]

The partition can't be mounted on the device when the PC is using it so it
always required a separate partition. Depending on what you want to do,
perhaps the internal SD card could be exposed this way at least.

Pat

On Thu, Aug 4, 2016 at 11:38 AM, Oliver Grawert <ogra@xxxxxxxxxx> wrote:

> hi,
> On Do, 2016-08-04 at 17:32 +0200, Michael Zanetti wrote:
> >
> > On 04.08.2016 16:59, Steve Langasek wrote:
> > >
> > > On Thu, Aug 04, 2016 at 12:11:27PM +0200, Michael Zanetti wrote:
> > > >
> > > > anyone here has an idea what would be required to enable mass
> > > > storage
> > > > over USB instead of MTP?
> > >
> > > For what device/kernel/android stack?  The general problem AIUI is
> > > that
> > > newer versions of Android have moved away from supporting USB mass
> > > storage
> > > by choice; I don't know what's required for re-enabling it.
> > >
> >
> > Hmm, the device I'm using right now is a Pro 5. Odd that this is so
> > far
> > down in the kernel...
> >
> not at all ... the behaviour of the usb port is controlled by the
> android gadget driver which sets adb,mtp,pptp,usb,rndis and so on ...
>
> check the init.rc scripts in the android container what the specific
> options are on your pro5
> ...
>
> though iirc there were filesystem related issues too, not only gadget
> ones, when we reviewed that option.
>
> the usb-storage setup behaves like a raw blockdevice, you need to
> actually export a filesystem that the target machines know ... given
> the majority will likely be windows or macOS that boils dont to "you
> can only export vfat"
> but at the same time you cant use vfat for the homedir ... android
> hacks around that through some fake sdcard devices they create to
> export a vfat iirc ... maintaining such hackery will be a massive pain
> i guess.
>
> ciao
>         oli
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