I've added the ability to dump(8) multiple sub directories and files
of a single filesystem, a la Solaris' ufsdump(1M).

Is anyone interested in testing them? The dump(8) command should work
ok; the issue is whether you can then successfully restore(8) stuff,
and the only stuff in the dump is what you asked to be dumped.

Send me personal email for patches. If things look ok, I'll commit the
changes.

PS: since it uses fts(3) to find subdirs/files in that case, you can't
backup stuff you can't scan. However, if you have read access on the
disk character device, a full backup will still work. Sorry, but I have
no intention of writing a version of fts(3) that goes in via the character
device just to work around this :)

--
Luke Mewburn <lukem@connect.com.au>
"The twentieth century has been characterised by three developments of great
 political importance: the growth of democracy, the growth of corporate power,
 and the growth of corporate propaganda as a means of protecting corporate
 power against democracy."
                               -- `Taking the Risk Out of Democracy: Propaganda
                                   in the US and Australia', Alex Carey