desktop-packages team mailing list archive

[Alberto Mardegan <1450168@xxxxxxxxxxxxxxxxxx>]

I had a chat with Alex Blasche from the Qt project about making the
necessary changes to the QtLocation plugin API so that geoservice
plugins would be allowed to use an external download manager and a tile
cache service. He does not have objections to these extensions in
principle, but it's up to us to make the first move.

I added the apparmor-easyprof-ubuntu project to the bug, because first
of all we need to know if the security team agrees on opening up
~/.cache/QtLocation/ (this is the root dir where all cached tiles would
be stored) for reading.

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https://bugs.launchpad.net/bugs/1450168

Title:
  Map data should be shared between apps

Status in apparmor-easyprof-ubuntu package in Ubuntu:
  New
Status in qtlocation-opensource-src package in Ubuntu:
  New

Bug description:
  The libqtgeoservices_osm.so plugin gets loaded in the same process as
  the application using it, and stores all the map tiles into ~/.cache
  /<click-package>/

  This means that different apps will be unable to share the data,
  leading to wasted filesystem space.

  I suggest to modify the plugin so that:

  1) Tiles are stored in a common place (and apparmor rules are relaxed
  to allow read access to that): ~/.cache/libqtgeoservices_osm/, for
  example

  2) Tile downloads are managed by a separate service, started on
  demand.

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