tests: mock qemuInterfaceOpenVhostNet
This functions contains logic that tries to use vhost for virtio interfaces, even if <driver name='vhost'/> was not supplied. In this case, a failure is non-fatal. On my system, /dev/vhost-net was not accessible to the user running 'make check', but we should not depend on that. Mock it to prevent accessing /dev/vhost-net and return some predictable file descriptor numbers instead. Introduced by commit c1f684ea - deprecate QEMU_CAPS_VHOST_NET. Signed-off-by: NJán Tomko <jtomko@redhat.com> Reported-by: NJiří Denemark <jdenemar@redhat.com> Reviewed-by: NMartin Kletzander <mkletzan@redhat.com>
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