Access partitions on a file in NetBSD (kpartx alternative)

[tech mailinglists <mailinglists.tech%gmail.com@localhost>]

Hello all,

I am searching for a tool or method to access paritions from a file. So 
for example I have a simple file or logical volume which contains a 
partition table and multiple partitions. So I normally can't mount this 
partitions with mount.

In Linux for example I would simply use kpartx to get 
dummy/pointer-devices for the partitions in /dev/mapper/ so is there a 
tool which do the same on NetBSD to get access to the partitions within 
the file or logical volume?

Best Regards

P.S. Sorry for my bad english