Re: [PATCH] net: 32 bit (socket layer) ioctl emulation for 64 bit kernels

[Arnaldo Carvalho de Melo <acme@ghostprotocols.net>]

On 1/9/06, Arnd Bergmann <arnd@arndb.de> wrote:
> On Monday 09 January 2006 06:46, Shaun Pereira wrote:

> > Since we are interested in ioctl's from userspace I have not added the
> > .compat_ioctl function pointer to struct net_device. The assumption
> > being once the userspace data has reached the kernel via the socket api,
> > if the socket layer protocol knows how to handle the data, it will
> > prepare it for the device.
>
> I think we need to have it in the long run, but if you don't need it
> for x25, then it's not your call to implement net_device->compat_ioctl.
> I've been thinking about how to get it right before, but did not
> reach a proper conclusion, since dev_ioctl is called in so many places
> that would all need to be changed for this.

Nowadays dev_ioctl is only called from one funcion: sock_ioctl in
net/socket.c, this is after a recent changeset by hch.

- Arnaldo