Re: [Xen-devel] [PATCH 1/3] xen/privcmd: return -ENOSYS for unimplemented IOCTLs
>>> On 09.02.17 at 15:17, <paul.durrant@citrix.com> 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?