[dm-devel] hctl from device name or major/minor

[Andy]

	What is the best way to get the hctl from the device name or major/minor
pair?  Specificly for use in a prio_callout program for multipath?  Is there
an API interface in the device mapper of sysfs libraries I should use to get
this information or should I just scan the appropriate /sys directory? 
Currently I just have a simple shell script to give me the path priority I
need, but would like to make it a c program.

Thanks,

Andy