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Re: installing rump libs

It is done.

One actually cool byproduct which I'd hadn't thought of before (although
it is quite obvious) is the ability to mount suspicious file system
images using non-kernel code.  I am suspecting it would be quite easy
to construct a file system image so that if mounted it would compromise
the host kernel.

As the usual usecase is being handed a usb stick with fat on it, I
converted rump_msdos to have the same syntax as mount_msdos by sharing
the option parsing code.  It should be possible to use them entirely
interchangeably, except the former will of course only compromise the
integrity of the file server process.

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