On Friday 18 March 2011 18:56:53 Michał Mirosław wrote: > If that's going to be used by possibly unprivileged userspace process, > then this passthrough should filter and validate all commands it > passes to hardware. If there is a possibility of some command sequence > to generate undefined or otherwise unwanted results, then you need > state tracker that will disallow that sequence to be generated by > unprivileged process. We have precedence for direct host commands in a few other block drivers. In general, any user who can open the block device can issue all commands unless they can directly destroy the hardware. On normal systems, the only user that has write access to block devices is root. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
