virtio_backing
struct virtio_backing qcowfile;
struct virtio_backing rawfile;
struct virtio_backing file;
struct virtio_backing *file, off_t *sz)
struct virtio_backing *, off_t *);
virtio_qcow2_init(struct virtio_backing *file, off_t *szp, int *fd, size_t nfd)
virtio_raw_init(struct virtio_backing *file, off_t *szp, int *fd, size_t nfd)
struct virtio_backing *f = NULL;
struct virtio_backing file;
struct virtio_backing file;
int virtio_qcow2_init(struct virtio_backing *, off_t *, int*, size_t);
int virtio_raw_init(struct virtio_backing *, off_t *, int*, size_t);