Backups will be handled by launching the application in a special
mode under which no activities or services will be started, only
the BackupAgent subclass named in the app's android:backupAgent
manifest property. This takes the place of the BackupService class
used earlier during development.
In the cases of *full* backup or restore, an application that does
not supply its own BackupAgent will be launched in a restricted
manner; in particular, it will be using the default Application
class rather than any manifest-declared one. This ensures that the
app is not running any code that may try to manipulate its data
while the backup system reads/writes its data set.
Given a package name, the Backup Manager schedules a *full* (i.e. non-
incremental) backup pass for that package. Also added the state-file
handling for distinguishing to the target between the full and incremental
backup requests.
Author: Christopher Tate <ctate@google.com>
Date: Mon May 4 16:38:11 2009 -0700
IBackupService now passes ParcelFileDescriptors rather than int fds
The outlines of backup state file / data file handling are now in place as well
in the BackupManagerService.
Author: Christopher Tate <ctate@google.com>
Date: Thu Apr 30 12:40:19 2009 -0700
Hide the backup stuff for now
Also adjust based on comments:
+ changed service intent string to conform to usage guidelines
+ only publish the IBackupService binder when invoked with the right
intent action
+ docs tweaks
Also tweak the dataChanged() api to have the client supply a package name. We
don't necessarily TRUST this, but we use it to narrow the set of packages requesting
a backup pass, no longer blithely scheduling a pass for all packages associated
with the caller's uid.
This change adds a sketched outline of the backup system architecture, with
all of the major pieces represented other than client-side helpers for
specific types of data. IBackupManager and BackupService are public so that
we can write test apps against SDK-domain symbols from the outset.
What code exists in this change hasn't been tested and may crash. It's the
beginnings of the real implementation but of course is barely begun.
