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zHelpers for CageFS interaction from lvectl / lvdctl.
Kept in python_lve to avoid a hard dependency on securelve: lve-utils
is installed on systems without CageFS, so anything we call here must
degrade to a no-op when CageFS is absent.
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nB# t( $ r5 t j | rt j | w xY wt- j t dgt, j t, j d dS )a5 Register LVD helper proxyexec entries in /etc/cagefs/proxy.commands.
No-op when CageFS is not installed (cagefsctl binary absent) or when
the entries are already present. When entries are added, runs
``cagefsctl --update-wrappers`` so the in-CageFS proxyexec wrappers
appear immediately.
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