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Is it possible to somehow use unshare to create a new mount namespace with a single folder shared between the new mount namespace and the parent one? Or, failing that, is it somehow possible to enter the child mount ns from the parent and move a mountpoint from the child ns into the parent ns?
The final objective I'm trying to achieve is something like systemd's machinectl bind but in reverse: I need to run something inside a mount ns (not a security boundary), which will mount some number of new filesystems, and "pick" some of those into the host.
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Is it possible to somehow use
unshareto create a new mount namespace with a single folder shared between the new mount namespace and the parent one? Or, failing that, is it somehow possible to enter the child mount ns from the parent and move a mountpoint from the child ns into the parent ns?The final objective I'm trying to achieve is something like systemd's
machinectl bindbut in reverse: I need to run something inside a mount ns (not a security boundary), which will mount some number of new filesystems, and "pick" some of those into the host.Beta Was this translation helpful? Give feedback.
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