On Tue, Sep 26, 2023 at 1:00 PM <liming.wu@xxxxxxxxxxxxxxx> wrote:
>
> From: Liming Wu <liming.wu@xxxxxxxxxxxxxxx>
>
> Need to insmod vhost_test.ko before run virtio_test.
> Give some hints to users.
>
> Signed-off-by: Liming Wu <liming.wu@xxxxxxxxxxxxxxx>
> ---
> tools/virtio/virtio_test.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/tools/virtio/virtio_test.c b/tools/virtio/virtio_test.c
> index 028f54e6854a..ce2c4d93d735 100644
> --- a/tools/virtio/virtio_test.c
> +++ b/tools/virtio/virtio_test.c
> @@ -135,6 +135,10 @@ static void vdev_info_init(struct vdev_info* dev, unsigned long long features)
> dev->buf = malloc(dev->buf_size);
> assert(dev->buf);
> dev->control = open("/dev/vhost-test", O_RDWR);
> +
> + if (dev->control < 0)
> + fprintf(stderr, "Install vhost_test module" \
> + "(./vhost_test/vhost_test.ko) firstly\n");
There should be many other reasons to fail for open().
Let's use strerror()?
Thanks
> assert(dev->control >= 0);
> r = ioctl(dev->control, VHOST_SET_OWNER, NULL);
> assert(r >= 0);
> --
> 2.34.1
>
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