Re: [Xen-devel] [PATCH 1/3] xen/privcmd: return -ENOSYS for unimplemented IOCTLs

[Jan Beulich]

>>> On 09.02.17 at 15:17, <paul.durrant@xxxxxxxxxx> wrote:
> The code goes so far as to set the default return code to -ENOSYS but
> then overrides this to -EINVAL in the switch() statement's default
> case.

If you already change this, isn't -ENOTTY the traditional way of
indicating unsupported ioctls?

Jan