Tibor Vass 47e77de42d plugins: container-rootfs-relative paths ...

Legacy plugins expect host-relative paths (such as for Volume.Mount).
However, a containerized plugin cannot respond with a host-relative
path. Therefore, this commit modifies new volume plugins' paths in Mount
and List to prepend the container's rootfs path.

This introduces a new PropagatedMount field in the Plugin Config.
When it is set for volume plugins, RootfsPropagation is set to rshared
and the path specified by PropagatedMount is bind-mounted with rshared
prior to launching the container. This is so that the daemon code can
access the paths returned by the plugin from the host mount namespace.

Signed-off-by: Tibor Vass <tibor@docker.com>
Upstream-commit: 5a84f77819
Component: cli

2017-06-02 00:10:43 +00:00

components/cli

plugins: container-rootfs-relative paths

2017-06-02 00:10:43 +00:00

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