Public bug reported: Since http://bazaar.launchpad.net/~phablet-team/webbrowser- app/trunk/revision/1019, the webapp container (and all other embedders using an Ubuntu WebView) dynamically computes the cache size hint based on the available disk space.
This doesn’t work in the general case, when the app is confined by apparmor, because the computation relies on QStorageInfo::bytesAvailable() (http://doc.qt.io/qt-5/qstorageinfo.html#bytesAvailable), which triggers apparmor denials: Jul 6 18:34:07 ubuntu-phablet kernel: [17458.604265]type=1400 audit(1436200447.375:184): apparmor="DENIED" operation="open" profile="com.ubuntu.developer.webapps.webapp-amazon-int_webapp-amazon_1.0.10" name="/proc/7424/mounts" pid=7424 comm="webapp-containe" requested_mask="r" denied_mask="r" fsuid=32011 ouid=32011 Jul 6 18:34:07 ubuntu-phablet kernel: [17458.604407]type=1400 audit(1436200447.375:185): apparmor="DENIED" operation="open" profile="com.ubuntu.developer.webapps.webapp-amazon-int_webapp-amazon_1.0.10" name="/dev/disk/by-label/" pid=7424 comm="webapp-containe" requested_mask="r" denied_mask="r" fsuid=32011 ouid=0 This essentially means that the computation of the cache size hint is broken. It has also been reported that this breaks other apps’ functionality: https://lists.launchpad.net/ubuntu-phone/msg13622.html. ** Affects: apparmor-easyprof-ubuntu (Ubuntu) Importance: Undecided Status: New ** Affects: webbrowser-app (Ubuntu) Importance: High Assignee: Olivier Tilloy (osomon) Status: Confirmed ** Also affects: apparmor-easyprof-ubuntu (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to webbrowser-app in Ubuntu. https://bugs.launchpad.net/bugs/1471890 Title: cacheSizeHint computation for webapps is incorrect due to apparmor denials Status in apparmor-easyprof-ubuntu package in Ubuntu: New Status in webbrowser-app package in Ubuntu: Confirmed Bug description: Since http://bazaar.launchpad.net/~phablet-team/webbrowser- app/trunk/revision/1019, the webapp container (and all other embedders using an Ubuntu WebView) dynamically computes the cache size hint based on the available disk space. This doesn’t work in the general case, when the app is confined by apparmor, because the computation relies on QStorageInfo::bytesAvailable() (http://doc.qt.io/qt-5/qstorageinfo.html#bytesAvailable), which triggers apparmor denials: Jul 6 18:34:07 ubuntu-phablet kernel: [17458.604265]type=1400 audit(1436200447.375:184): apparmor="DENIED" operation="open" profile="com.ubuntu.developer.webapps.webapp-amazon-int_webapp-amazon_1.0.10" name="/proc/7424/mounts" pid=7424 comm="webapp-containe" requested_mask="r" denied_mask="r" fsuid=32011 ouid=32011 Jul 6 18:34:07 ubuntu-phablet kernel: [17458.604407]type=1400 audit(1436200447.375:185): apparmor="DENIED" operation="open" profile="com.ubuntu.developer.webapps.webapp-amazon-int_webapp-amazon_1.0.10" name="/dev/disk/by-label/" pid=7424 comm="webapp-containe" requested_mask="r" denied_mask="r" fsuid=32011 ouid=0 This essentially means that the computation of the cache size hint is broken. It has also been reported that this breaks other apps’ functionality: https://lists.launchpad.net/ubuntu-phone/msg13622.html. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor-easyprof-ubuntu/+bug/1471890/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
