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The current policy is to only allow the root user access to the Sysroot
and OS interfaces, but this can be expressed in the static bus config.
The long-term intention is to integrate with PolicyKit. Leave comments
in the code stating so but remove the unnecessary authorization handler
for the time being, just so there's less code to review.
Implementing a template pattern for transactions.
The TransactionClass is now abstract, and transaction_new() is replaced
with various method-specific functions like transaction_new_upgrade().
These custom subclasses live in a new file transaction-types.[ch].
Further, transaction_monitor_new_transaction() is replaced with
transaction_monitor_add(). So the handlers for "OS" interface methods
need only create an appropriate transaction instance and hand it off to
the transaction monitor.
libostree logs messages to systemd's journal and also to stdout.
Redirect our own stdout back to ourselves so we can capture those
messages and pass them on to clients. Admittedly hokey but avoids
hacking libostree directly (for now).
A few changes:
- Modify the D-Bus API to include a Finish() method instead of a Start()
method, the idea being the client calls Finish() to obtain the final
status and optional message once the transaction indicates it's done.
Calling Finish() also removes the transaction object from the bus.
- Introduce Transaction class as a thin wrapper for RPMOSTreeTransaction.
Stores the status info for Finish(), detects when the caller's bus name
vanishes, and emits various status signals to TransactionMonitor.
- Introduce TransactionMonitor as a factory class for Transactions that
also handles book keeping chores like tracking the active Transaction.
The Sysroot and OS interfaces share a TransactionMonitor instance.
Creates, configures and exports an RPMOSTreeTransaction object from a
GDBusMethodInvocation. The interface is exported relative to the object
path on which the D-Bus method was called.
