By default the whole image file is attechd to the loopback device, but
we want to only attach a slice, namely individual partitions.
This is a noop, just adds the parameters to the helpers.
Signed-off-by: Tom Gundersen <teg@jklm.no>
We want to copy the contents of a directory to another, the correct
syntax for that is `cp -a src/. dst`. I was not aware of this beauty,
so the previous patch simulated the functionality in python code.
Signed-off-by: Tom Gundersen <teg@jklm.no>
In the simplest case we don't need to make an image, a filesystem tree
will do. Also support using such a tree as input for further pipelines
through the untree stage.
Signed-off-by: Tom Gundersen <teg@jklm.no>
