any simple tool to extract files from an UFS image ?

[Julian Elischer]

Luigi Rizzo wrote:
> Hi,
> I am doing some work recently on small FreeBSD images (picobsd and friends),
> and I need to run on a linux machine some script to customize
> both the UFS and the ISO image.

dump and restore?

> 
> Because the customization is just writing some text into a file,
> my approach is to put in the UFS image a file with a recognizable
> start and end markers, and then dd into the image the stuff I need.
> 
> I was wondering if i could avoid shipping both images, and instead
> use some trick to extract the tree from the UFS image and then
> use mkisofs on the linux side to build the ISO.
> 
> I know that bsdtar can read ISO images, but I don't think it does
> the same on UFS. Yet, if the boot2 code is able to squeeze the
> required pieces on 8k or so, maybe there is some simple (and portable)
> tool that can do the file extraction job ?
> 
> 	cheers
> 	luigi
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