Add vsock-backed SSH session reminders

Remind users when a VM is still running after 	hanger vm ssh exits instead of silently dropping them back to the host shell.\n\nAttach a Firecracker vsock device to each VM, persist the host vsock path/CID,\nadd a new guest-side banger-vsock-pingd responder to the runtime bundle and both\nimage-build paths, and expose a vm.ping RPC that the CLI and TUI call after SSH\nreturns. Doctor and start/build preflight now validate the helper plus\n/dev/vhost-vsock so the feature fails early and clearly.\n\nValidated with go mod tidy, bash -n customize.sh, git diff --check, make build,\nand GOCACHE=/tmp/banger-gocache go test ./... outside the sandbox because the\ndaemon tests need real Unix/UDP sockets. Rebuild the image/rootfs used for new\nVMs so the guest ping service is present.
This commit is contained in:
Thales Maciel 2026-03-18 20:14:51 -03:00
parent 4930d82cb9
commit 08ef706e3f
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GPG key ID: 33112E6833C34679
31 changed files with 912 additions and 75 deletions

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@ -323,6 +323,13 @@ func (d *Daemon) dispatch(ctx context.Context, req rpc.Request) rpc.Response {
return rpc.NewError("not_running", fmt.Sprintf("vm %s is not running", vm.Name))
}
return marshalResultOrError(api.VMSSHResult{Name: vm.Name, GuestIP: vm.Runtime.GuestIP}, nil)
case "vm.ping":
params, err := rpc.DecodeParams[api.VMRefParams](req)
if err != nil {
return rpc.NewError("bad_request", err.Error())
}
result, err := d.PingVM(ctx, params.IDOrName)
return marshalResultOrError(result, err)
case "image.list":
images, err := d.store.ListImages(ctx)
return marshalResultOrError(api.ImageListResult{Images: images}, err)