18 Apr
2019
18 Apr
'19
5:57 a.m.
On Thu, Apr 18, 2019 at 12:53:00AM +0100, Al Viro wrote:
Why would you want to duplicate large chunks of anything? The above is not even compile-tested, but... I can put together a patch if you wish. Or am I missing something here?
Actually, there's another broken part - pppox. And that one is nastier - you've just lost everything outside of protocol family ioctls on those sockets. Try e.g. SIOCGIFMTU in 32bit process on those.
We really can't reuse native ->ioctl() there - proto family ->compat_ioctl() *must* return -ENOIOCTLCMD on everything it doesn't handle.