On 8/18/20 10:10 AM, Pino Toscano wrote:
What about stat()ing /dev/mapper/control? That should give you the
major/minor of that special character device.
That won't help. We need to get the major of devmapper targets. For
instance, if there is /dev/dm-0 node, it's going to be a block device
with major of devmapper targets. All devmapper targets will have the
same major number. And this number can be defined when loading the
module. Then, /dev/mapper/control is a character device with completely
different major:minor numbers.
Michal