qemu-metadata-api: allow building without cgo dependencies for linting

hack/qemu-metadata-api/virtwrapper/virtwrapper_cross.go

@@ -0,0 +1,33 @@
+//go:build !cgo
+
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
+package virtwrapper
+
+import "errors"
+
+// Connect wraps a libvirt connection.
+type Connect struct{}
+
+// LookupNetworkByName looks up a network by name.
+// This function errors if CGO is disabled.
+func (c *Connect) LookupNetworkByName(_ string) (*Network, error) {
+	return nil, errors.New("using virtwrapper requires building with CGO")
+}
+
+// Network wraps a libvirt network.
+type Network struct{}
+
+// GetDHCPLeases returns the underlying DHCP leases.
+// This function errors if CGO is disabled.
+func (n *Network) GetDHCPLeases() ([]NetworkDHCPLease, error) {
+	return nil, errors.New("using virtwrapper requires building with CGO")
+}
+
+// Free the network resource.
+// This function does nothing if CGO is disabled.
+func (n *Network) Free() {}