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This includes two new hidden commands: a 9p server, `podman machine server9p`, and a 9p client, `podman machine client9p` with `server9p` currently only configured to run on Windows and serve 9p via HyperV vsock, and `client9p` only configured to run on Linux. The server is run by `podman machine start` and has the same lifespan as gvproxy (waits for the gvproxy PID to die before shutting down). The client is run inside the VM, also by `podman machine start`, and mounts uses kernel 9p mount code to complete the mount. It's unfortunately not possible to use mount directly without the wrapper; we need to set up the vsock and pass it to mount as an FD. In theory this can be generalized so that the server can run anywhere and over almost any transport, but I haven't done this here as I don't think we have a usecase other than HyperV right now. [NO NEW TESTS NEEDED] This requires changes to Podman in the VM, so we need to wait until a build with this lands in FCOS to test. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
vsock 
Package vsock provides access to Linux VM sockets (AF_VSOCK) for
communication between a hypervisor and its virtual machines. MIT Licensed.
For more information about VM sockets, see my blog about Linux VM sockets in Go or the QEMU wiki page on virtio-vsock.
Stability
See the CHANGELOG file for a description of changes between releases.
This package has a stable v1 API and any future breaking changes will prompt the release of a new major version. Features and bug fixes will continue to occur in the v1.x.x series.
This package only supports the two most recent major versions of Go, mirroring Go's own release policy. Older versions of Go may lack critical features and bug fixes which are necessary for this package to function correctly.