Re: kdbus: add documentation

Hi

On Sun, Nov 30, 2014 at 9:56 AM, Florian Weimer [off-list ref] wrote:

* Greg Kroah-Hartman:

quoted

+The focus of this document is an overview of the low-level, native kernel D-Bus
+transport called kdbus. Kdbus exposes its functionality via files in a
+filesystem called 'kdbusfs'. All communication between processes takes place
+via ioctls on files exposed through the mount point of a kdbusfs. The default
+mount point of kdbusfs is /sys/fs/kdbus.

Does this mean the bus does not enforce the correctness of the D-Bus
introspection metadata?  That's really unfortunate.  Classic D-Bus
does not do this, either, and combined with the variety of approaches
used to implement D-Bus endpoints, it makes it really difficult to
figure out what D-Bus services, exactly, a process provides.

kdbus operates on the transport-level only. We never touch or look at
transferred data. As such, DBus introspection data as defined by
org.freedesktop.DBus.Introspectable is not verified by the transport
layer.

Thanks
David