George Dunlap writes ("[PATCH 2/5] tools/dm_restrict: Ask QEMU to chroot"):
> When dm_restrict is enabled, ask QEMU to chroot into an empty directory.
>
> * Create /var/run/qemu/root-domid (deleting the old one if it's there)
> * Pass the -chroot option to QEMU
>
> Rather than running `rm -rf` on the directory before creating it
> (since there is no library function to do this), simply rmdir the
> directory, relying on the fact that the previous QEMU instance, if
> properly restricted, shouldn't have been able to write anything
> anyway.
Acked-by: Ian Jackson <ian.jack...@eu.citrix.com>
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