Commit 9e72c450 authored by Alexey Zaytsev's avatar Alexey Zaytsev Committed by Stefan Hajnoczi
Browse files

virtio-blk: Return UNSUPP for unknown request types 



Currently, all unknown requests are treated as VIRTIO_BLK_T_IN

Signed-off-by: default avatarAlexey Zaytsev <alexey.zaytsev@gmail.com>
Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
parent 392808b4

hw/virtio-blk.c

+5 −1
Original line number Diff line number Diff line
@@ -398,10 +398,14 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req, 
        qemu_iovec_init_external(&req->qiov, &req->elem.out_sg[1],

                                 req->elem.out_num - 1);

        virtio_blk_handle_write(req, mrb);

    } else {

    } else if (type == VIRTIO_BLK_T_IN || type == VIRTIO_BLK_T_BARRIER) {

        /* VIRTIO_BLK_T_IN is 0, so we can't just & it. */

        qemu_iovec_init_external(&req->qiov, &req->elem.in_sg[0],

                                 req->elem.in_num - 1);

        virtio_blk_handle_read(req);

    } else {

        virtio_blk_req_complete(req, VIRTIO_BLK_S_UNSUPP);

        g_free(req);

    }

}