Le 23/06/2021 à 11:50, Dr. Nikolaus Klepp a écrit :
> Hi!
>
> Anno domini 2021 Wed, 23 Jun 00:00:11 +0200
>  Didier Kryn scripsit:
>> Le 22/06/2021 à 19:10, Steve Litt a écrit :
>> [...]
>>     Hopman-cli would write to the pipe 3 sorts of messages, with all the
>> necessary details:
>>
>> - a device special file associated to a removable partition has been
>> detected in /dev
>> - a symlink has been detected in /dev/disk/by-label, pointing to a
>> removable partition
>> - a device special file associated to a removable partition has been
>> removed
> IMO this sounds good. I would just make it react on all partitions, not only 
> the removable: there are broken devices out in the wild that lie about their 
> removability. And there are devices that have wrong entries in the hw 
> database (e.g. old Casio cameras).

    No, Hopman should not show /home, /var, etc... Currently it relies
on /sys to tell which device is removable. Removable partitions might
also be declared in the config file as regular expressions.

>
> Oh, hopman would only send data, not receive from the client side, would it?
>
>> [...]
>>     Then it's up to the GUI application to
>>
>> - parse these messages, maintain and display a list of removable
>> partitions and their labels,
>> - on click, spawn helpers to mount/umount/open partitions and
>> potentially eject disks, check completion and report errors,
>> - periodically read /proc/self/mounts and report mountpoints of
>> removable partitions on the display.
> Why parse /proc/self/mounts? IMO it would make more sense if hopman-cli sends 
> "xxxx mounted on yyy" or "xxx unlounted" over the pipe, as it is already 
> monitoring stuff.

    There is no other way to know which partitions are mounted or not
than read /proc/self/mounts. inotify does not work on pseudo-filesystems
like /sys or /proc. Therefore, either this is done by the front-end or
by the back-end.


>
>>     Both Hopman-cli and the GUI must read hopmanrc at startup (it seems
>> simpler to have a single file to configure both). Possibly the name of
>> the GUI application might be specified in hopmanrc and Hopman-cli would
>> launch it.
> What's configurable in hopmanrc? Shouldn't it "just work" for all 
> partitions/devices? The GUI part most likely will need some config, e.g 
> automounting certain devices/partitions etc.

    hopmanrc provides a lot of possiblities to parameterise the
application, such as window appearance, behaviour and position, location
of pid-file and helper applications to mount/umount/open/eject
partitions/devices.

--     Didier




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