run-init's nuke_dir function needs to be properly recursive

[Jeff Bailey]

run-init dies when there is a stray mount in a subdirectory. In general, the nuke_dir code is not properly recursive, and there are checks done on the top level directory that are not done in subdirectories.

[Scott James Remnant (Canonical) (canonical-scott)]

It looks recursive enough to me, was there something in particular on your mind here?

[Tollef Fog Heen (tfheen)]

It falls over if you mount something in a subdirectory, something like:

- boot with break=bottom
- in the rescue shell, do mkdir foo; mkdir foo/bar; mount -t tmpfs tmpfs foo/bar ; exit

should make it fall over.

[Launchpad Janitor (janitor)]

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